File libSavitar-3.6.0.obscpio of Package libSavitar

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File libSavitar-3.6.0.obscpio of Package libSavitar

07070100000000000041ED00000286000000640000000259FFB9EB00000000000000000000000000000000000000000000001700000000libSavitar-3.6.0/.idea07070100000001000081A400000286000000640000000159FFB9EB000000B4000000000000000000000000000000000000001F00000000libSavitar-3.6.0/.idea/vcs.xml<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="VcsDirectoryMappings">
    <mapping directory="$PROJECT_DIR$" vcs="Git" />
  </component>
</project>07070100000002000081A400000286000000640000000159FFB9EB00000E17000000000000000000000000000000000000002000000000libSavitar-3.6.0/CMakeLists.txtproject(savitar)
cmake_minimum_required(VERSION 2.8.12)

include(GNUInstallDirs)
include(CMakePackageConfigHelpers)

option(BUILD_PYTHON "Build " ON)
option(BUILD_STATIC "Build as a static library" OFF)

add_subdirectory(pugixml)

if(BUILD_PYTHON)
    set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
    find_package(SIP REQUIRED)
    if(NOT DEFINED LIB_SUFFIX)
        set(LIB_SUFFIX "")
    endif()
    if(EXISTS /etc/debian_version)
        # Running on a debian-based system, which requires special handling for python modules.
        set(PYTHON_SITE_PACKAGES_DIR lib${LIB_SUFFIX}/python3/dist-packages CACHE STRING "Directory to install Python bindings to")
    else()
        set(PYTHON_SITE_PACKAGES_DIR lib${LIB_SUFFIX}/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}/site-packages CACHE STRING "Directory to install Python bindings to")
    endif()
    include_directories(python/ src/ ${SIP_INCLUDE_DIR} ${PYTHON_INCLUDE_DIR})
endif()

if(NOT ${CMAKE_VERSION} VERSION_LESS 3.1)
    set(CMAKE_CXX_STANDARD 11)
else()
    set(CMAKE_CXX_FLAGS "-std=c++11")
endif()

if(APPLE AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
endif()

set(savitar_SRCS
    src/ThreeMFParser.cpp
    src/SceneNode.cpp
    src/Scene.cpp
    src/MeshData.cpp
    src/Vertex.cpp
    src/Face.cpp
)

set(savitar_HDRS
    src/ThreeMFParser.h
    src/Types.h
    src/SceneNode.h
    src/Scene.h
    src/MeshData.h
    src/Vertex.h
    src/Face.h
    src/SavitarExport.h
)

set(SAVITAR_VERSION 0.1.0)
set(SAVITAR_SOVERSION 0)

set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_FULL_LIBDIR})

if(BUILD_STATIC)
    add_library(Savitar STATIC ${savitar_SRCS})
else()
    add_library(Savitar SHARED ${savitar_SRCS})
endif()

target_link_libraries(Savitar PUBLIC pugixml)

if(NOT WIN32 OR CMAKE_COMPILER_IS_GNUCXX)
    set_target_properties(Savitar PROPERTIES COMPILE_FLAGS -fPIC)
endif()

if(BUILD_PYTHON)
    set(SIP_EXTRA_FILES_DEPEND python/Types.sip python/MeshData.sip python/SceneNode.sip python/Scene.sip)
    #set(SIP_EXTRA_SOURCE_FILES python/Types.cpp)
    set(SIP_EXTRA_OPTIONS -g) # -g means always release the GIL before calling C++ methods.
    add_sip_python_module(Savitar python/ThreeMFParser.sip Savitar)
endif()

target_include_directories(Savitar PUBLIC
    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)

if(${CMAKE_BUILD_TYPE})
    if(${CMAKE_BUILD_TYPE} STREQUAL "Debug" OR ${CMAKE_BUILD_TYPE} STREQUAL "RelWithDebInfo")
        add_definitions(-DSAVITAR_DEBUG)
    endif()
endif()

set_target_properties(Savitar PROPERTIES
    FRAMEWORK FALSE
    VERSION ${SAVITAR_VERSION}
    SOVERSION ${SAVITAR_SOVERSION}
    PUBLIC_HEADER "${savitar_HDRS}"
    DEFINE_SYMBOL MAKE_SAVITAR_LIB
)

install(TARGETS Savitar
    EXPORT Savitar-targets
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/Savitar
)

install(EXPORT Savitar-targets
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/Savitar
)

configure_package_config_file(SavitarConfig.cmake.in ${CMAKE_BINARY_DIR}/SavitarConfig.cmake INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/Savitar)
write_basic_package_version_file(${CMAKE_BINARY_DIR}/SavitarConfigVersion.cmake VERSION ${SAVITAR_VERSION} COMPATIBILITY SameMajorVersion)

install(FILES
    ${CMAKE_BINARY_DIR}/SavitarConfig.cmake
    ${CMAKE_BINARY_DIR}/SavitarConfigVersion.cmake
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/Savitar
)
07070100000003000081A400000286000000640000000159FFB9EB00001DCF000000000000000000000000000000000000001900000000libSavitar-3.6.0/LICENSEGNU LESSER GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.

0. Additional Definitions.

As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.

"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.

An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.

A "Combined Work" is a work produced by combining or linking an
Application with the Library.  The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".

The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.

The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.

1. Exception to Section 3 of the GNU GPL.

You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.

2. Conveying Modified Versions.

If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
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   whatever part of its purpose remains meaningful, or

b) under the GNU GPL, with none of the additional permissions of
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3. Object Code Incorporating Material from Library Header Files.

The object code form of an Application may incorporate material from
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       suitable for, and under terms that permit, the user to
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   for conveying Corresponding Source.)

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   on the Library, uncombined with any other library facilities,
   conveyed under the terms of this License.

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   is a work based on the Library, and explaining where to find the
   accompanying uncombined form of the same work.

6. Revised Versions of the GNU Lesser General Public License.

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of the GNU Lesser General Public License from time to time. Such new
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differ in detail to address new problems or concerns.

Each version is given a distinguishing version number. If the
Library as you received it specifies that a certain numbered version
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published by the Free Software Foundation. If the Library as you
received it does not specify a version number of the GNU Lesser
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If the Library as you received it specifies that a proxy can decide
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Library.07070100000004000081A400000286000000640000000159FFB9EB0000073D000000000000000000000000000000000000001B00000000libSavitar-3.6.0/README.mdIntroduction
------------

libSavitar is a c++ implementation of 3mf loading with SIP python bindings.

Requirements
------------

libSavitar requires SIP version 4.19.2 or higher: https://www.riverbankcomputing.com/software/sip/download

Build instructions Windows with MSVC
------------------------------------

Make sure you have run something like:

“c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64

Next, git clone libSavitar and from the directory:

```dos
mkdir build
mkdir install_dir
cd build
cmake -DCMAKE_INSTALL_PREFIX=../install_dir -DBUILD_STATIC=ON -DCMAKE_BUILD_TYPE=Release -G "NMake Makefiles" ..
nmake
nmake install
```

Now copy the site-packages contents from the install_dir into your site-packages dir.

Usage
-----

Reading 3mf's 3dmodel.model file.

```python
file_name = "project.3mf"
archive = zipfile.ZipFile(file_name, "r")
parser = Savitar.ThreeMFParser()
scene_3mf = parser.parse(archive.open("3D/3dmodel.model").read())
for node in scene_3mf.getSceneNodes():
    my_node = convertSavitarNodeToMyNode(node)
```

Writing

```python
archive = zipfile.ZipFile(stream, "w", compression = zipfile.ZIP_DEFLATED)
model_file = zipfile.ZipInfo("3D/3dmodel.model")
savitar_scene = Savitar.Scene()
#construct your node
savitar_scene.addSceneNode(savitar_node)

import numpy
mesh = savitar_node.getMeshData()

# We use zero data, but when using lib savitar, replace this with your data.
vertices = numpy.zeros((9, 3), dtype = numpy.float32)  
faces = numpy.zeros((4, 2), dtype=numpy.int32)

mesh.setVerticesFromBytes(vertices.tobytes())
mesh.setFacesFromBytes(faces.tobytes())

parser = Savitar.ThreeMFParser()

# Generate XML string 
scene_string = parser.sceneToString(savitar_scene)  
archive.writestr(model_file, scene_string)
```
07070100000005000081A400000286000000640000000159FFB9EB0000007D000000000000000000000000000000000000002800000000libSavitar-3.6.0/SavitarConfig.cmake.in@PACKAGE_INIT@

get_filename_component(SELF_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
include(${SELF_DIR}/Savitar-targets.cmake)07070100000006000041ED00000286000000640000000259FFB9EB00000000000000000000000000000000000000000000001700000000libSavitar-3.6.0/cmake07070100000007000081A400000286000000640000000159FFB9EB0000052F000000000000000000000000000000000000002D00000000libSavitar-3.6.0/cmake/COPYING-CMAKE-SCRIPTSRedistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products 
   derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
07070100000008000081A400000286000000640000000159FFB9EB000009B9000000000000000000000000000000000000002500000000libSavitar-3.6.0/cmake/FindSIP.cmake# Find SIP
# ~~~~~~~~
#
# SIP website: http://www.riverbankcomputing.co.uk/sip/index.php
#
# Find the installed version of SIP. FindSIP should be called after Python
# has been found.
#
# This file defines the following variables:
#
# SIP_VERSION - The version of SIP found expressed as a 6 digit hex number
#     suitable for comparision as a string.
#
# SIP_VERSION_STR - The version of SIP found as a human readable string.
#
# SIP_BINARY_PATH - Path and filename of the SIP command line executable.
#
# SIP_INCLUDE_DIR - Directory holding the SIP C++ header file.
#
# SIP_DEFAULT_SIP_DIR - Default directory where .sip files should be installed
#     into.

# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

if(APPLE)
    # Workaround for broken FindPythonLibs. It will always find Python 2.7 libs on OSX
    set(CMAKE_FIND_FRAMEWORK LAST)
endif()

find_package(PythonInterp 3.4.0 REQUIRED)
find_package(PythonLibs 3.4.0 REQUIRED)

IF(SIP_VERSION)
  # Already in cache, be silent
  SET(SIP_FOUND TRUE)
ELSE(SIP_VERSION)

FIND_FILE(_find_sip_py FindSIP.py PATHS ${CMAKE_MODULE_PATH})

SET(ENV{PYTHONPATH} ${CMAKE_INSTALL_PREFIX}/${PYTHON_SITE_PACKAGES_DIR})
  EXECUTE_PROCESS(COMMAND ${PYTHON_EXECUTABLE} ${_find_sip_py}
                  OUTPUT_VARIABLE sip_config
                  RESULT_VARIABLE sip_config_returncode)
  IF(sip_config_returncode EQUAL 0)
    STRING(REGEX REPLACE "^sip_version:([^\n]+).*$" "\\1" SIP_VERSION ${sip_config})
    STRING(REGEX REPLACE ".*\nsip_version_num:([^\n]+).*$" "\\1" SIP_VERSION_NUM ${sip_config})
    STRING(REGEX REPLACE ".*\nsip_version_str:([^\n]+).*$" "\\1" SIP_VERSION_STR ${sip_config})
    STRING(REGEX REPLACE ".*\nsip_bin:([^\n]+).*$" "\\1" SIP_BINARY_PATH ${sip_config})
    STRING(REGEX REPLACE ".*\ndefault_sip_dir:([^\n]+).*$" "\\1" SIP_DEFAULT_SIP_DIR ${sip_config})
    STRING(REGEX REPLACE ".*\nsip_inc_dir:([^\n]+).*$" "\\1" SIP_INCLUDE_DIR ${sip_config})
    SET(SIP_FOUND TRUE)
  ENDIF(sip_config_returncode EQUAL 0)

IF(SIP_FOUND)
    IF(NOT SIP_FIND_QUIETLY)
      MESSAGE(STATUS "Found SIP version: ${SIP_VERSION_STR}")
    ENDIF(NOT SIP_FIND_QUIETLY)

include(${CMAKE_MODULE_PATH}/SIPMacros.cmake)
  ELSE(SIP_FOUND)
    IF(SIP_FIND_REQUIRED)
      MESSAGE(FATAL_ERROR "Could not find SIP")
    ENDIF(SIP_FIND_REQUIRED)
  ENDIF(SIP_FOUND)

ENDIF(SIP_VERSION)

07070100000009000081A400000286000000640000000159FFB9EB00000847000000000000000000000000000000000000002200000000libSavitar-3.6.0/cmake/FindSIP.py# FindSIP.py
#
# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

import sys
import os.path

def fail(msg="Unable to determine your sip configuration."):
    print(msg)
    sys.exit(1)

try:
    # Try the old sipconfig. Many Linux distros still ship this in their packages.
    import sipconfig
    sipcfg = sipconfig.Configuration()
    
    sip_version = sipcfg.sip_version
    sip_version = sipcfg.sip_version
    sip_version_str = sipcfg.sip_version_str
    sip_bin = sipcfg.sip_bin
    default_sip_dir = sipcfg.default_sip_dir
    sip_inc_dir = sipcfg.sip_inc_dir

except ImportError:
    try:
        if sys.platform == "win32":
            # Collect the info from the sip module and guess the rest.
            import sip
            from distutils import sysconfig
            
            sip_version = sip.SIP_VERSION
            sip_version_str = sip.SIP_VERSION_STR
            
            exe = sys.executable
            if exe is None:
                fail()
            base_path = os.path.dirname(exe)
            sip_bin = os.path.join(base_path, "Lib\\site-packages\\PyQt5\\sip.exe")
            if not os.path.exists(sip_bin):
                fail()
                    
            sip_inc_dir = os.path.join(base_path, "Lib\\site-packages\\PyQt5\\include\\")
            if not os.path.exists(sip_inc_dir):
                fail()

default_sip_dir = os.path.join(base_path, "Lib\\site-packages\\PyQt5\\sip\\")
            if not os.path.exists(default_sip_dir):
                fail()
        else:
            fail("Unable to import sipconfig and determine your sip configuration.")

except ImportError:
        fail("Unable to import sipconfig and determine your sip configuration.")

print("sip_version:%06.0x" % sip_version)
print("sip_version_num:%d" % sip_version)
print("sip_version_str:%s" % sip_version_str)
print("sip_bin:%s" % sip_bin)
print("default_sip_dir:%s" % default_sip_dir)
print("sip_inc_dir:%s" % sip_inc_dir)
0707010000000A000081A400000286000000640000000159FFB9EB000014E1000000000000000000000000000000000000002700000000libSavitar-3.6.0/cmake/SIPMacros.cmake# Macros for SIP
# ~~~~~~~~~~~~~~
# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
#
# SIP website: http://www.riverbankcomputing.co.uk/sip/index.php
#
# This file defines the following macros:
#
# ADD_SIP_PYTHON_MODULE (MODULE_NAME MODULE_SIP [library1, libaray2, ...])
#     Specifies a SIP file to be built into a Python module and installed.
#     MODULE_NAME is the name of Python module including any path name. (e.g.
#     os.sys, Foo.bar etc). MODULE_SIP the path and filename of the .sip file
#     to process and compile. libraryN are libraries that the Python module,
#     which is typically a shared library, should be linked to. The built
#     module will also be install into Python's site-packages directory.
#
# The behaviour of the ADD_SIP_PYTHON_MODULE macro can be controlled by a
# number of variables:
#
# SIP_INCLUDES - List of directories which SIP will scan through when looking
#     for included .sip files. (Corresponds to the -I option for SIP.)
#
# SIP_TAGS - List of tags to define when running SIP. (Corresponds to the -t
#     option for SIP.)
#
# SIP_CONCAT_PARTS - An integer which defines the number of parts the C++ code
#     of each module should be split into. Defaults to 8. (Corresponds to the
#     -j option for SIP.)
#
# SIP_DISABLE_FEATURES - List of feature names which should be disabled
#     running SIP. (Corresponds to the -x option for SIP.)
#
# SIP_EXTRA_OPTIONS - Extra command line options which should be passed on to
#     SIP.

SET(SIP_INCLUDES)
SET(SIP_TAGS)
SET(SIP_CONCAT_PARTS 8)
SET(SIP_DISABLE_FEATURES)
SET(SIP_EXTRA_OPTIONS)

MACRO(ADD_SIP_PYTHON_MODULE MODULE_NAME MODULE_SIP)

SET(EXTRA_LINK_LIBRARIES ${ARGN})

STRING(REPLACE "." "/" _x ${MODULE_NAME})
    GET_FILENAME_COMPONENT(_parent_module_path ${_x}  PATH)
    GET_FILENAME_COMPONENT(_child_module_name ${_x} NAME)

GET_FILENAME_COMPONENT(_module_path ${MODULE_SIP} PATH)
    GET_FILENAME_COMPONENT(_abs_module_sip ${MODULE_SIP} ABSOLUTE)

# We give this target a long logical target name.
    # (This is to avoid having the library name clash with any already
    # install library names. If that happens then cmake dependency
    # tracking get confused.)
    STRING(REPLACE "." "_" _logical_name ${MODULE_NAME})
    SET(_logical_name "python_module_${_logical_name}")

FILE(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${_module_path})    # Output goes in this dir.

SET(_sip_includes)
    FOREACH (_inc ${SIP_INCLUDES})
        GET_FILENAME_COMPONENT(_abs_inc ${_inc} ABSOLUTE)
        LIST(APPEND _sip_includes -I ${_abs_inc})
    ENDFOREACH (_inc )

SET(_sip_tags)
    FOREACH (_tag ${SIP_TAGS})
        LIST(APPEND _sip_tags -t ${_tag})
    ENDFOREACH (_tag)

SET(_sip_x)
    FOREACH (_x ${SIP_DISABLE_FEATURES})
        LIST(APPEND _sip_x -x ${_x})
    ENDFOREACH (_x ${SIP_DISABLE_FEATURES})

SET(_message "-DMESSAGE=Generating CPP code for module ${MODULE_NAME}")
    SET(_sip_output_files)
    FOREACH(CONCAT_NUM RANGE 0 ${SIP_CONCAT_PARTS} )
        IF( ${CONCAT_NUM} LESS ${SIP_CONCAT_PARTS} )
            SET(_sip_output_files ${_sip_output_files} ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/sip${_child_module_name}part${CONCAT_NUM}.cpp )
        ENDIF( ${CONCAT_NUM} LESS ${SIP_CONCAT_PARTS} )
    ENDFOREACH(CONCAT_NUM RANGE 0 ${SIP_CONCAT_PARTS} )

# Suppress warnings
    IF(PEDANTIC)
      IF(MSVC)
        # 4996 deprecation warnings (bindings re-export deprecated methods)
        # 4701 potentially uninitialized variable used (sip generated code)
        # 4702 unreachable code (sip generated code)
        ADD_DEFINITIONS( /wd4996 /wd4701 /wd4702 )
      ELSE(MSVC)
        # disable all warnings
        ADD_DEFINITIONS( -w )
      ENDIF(MSVC)
    ENDIF(PEDANTIC)

ADD_CUSTOM_COMMAND(
        OUTPUT ${_sip_output_files}
        COMMAND ${CMAKE_COMMAND} -E echo ${message}
        COMMAND ${CMAKE_COMMAND} -E touch ${_sip_output_files}
        COMMAND ${SIP_BINARY_PATH} ${_sip_tags} ${_sip_x} ${SIP_EXTRA_OPTIONS} -j ${SIP_CONCAT_PARTS} -c ${CMAKE_CURRENT_BINARY_DIR}/${_module_path} ${_sip_includes} ${_abs_module_sip}
        DEPENDS ${_abs_module_sip} ${SIP_EXTRA_FILES_DEPEND}
    )
    # not sure if type MODULE could be uses anywhere, limit to cygwin for now
    IF (CYGWIN OR APPLE)
        ADD_LIBRARY(${_logical_name} MODULE ${_sip_output_files} ${SIP_EXTRA_SOURCE_FILES})
    ELSE (CYGWIN OR APPLE)
        ADD_LIBRARY(${_logical_name} SHARED ${_sip_output_files} ${SIP_EXTRA_SOURCE_FILES})
    ENDIF (CYGWIN OR APPLE)
    IF (NOT APPLE)
        TARGET_LINK_LIBRARIES(${_logical_name} ${PYTHON_LIBRARIES})
    ENDIF (NOT APPLE)
    TARGET_LINK_LIBRARIES(${_logical_name} ${EXTRA_LINK_LIBRARIES})
    IF (APPLE)
        SET_TARGET_PROPERTIES(${_logical_name} PROPERTIES LINK_FLAGS "-undefined dynamic_lookup")
    ENDIF (APPLE)
    SET_TARGET_PROPERTIES(${_logical_name} PROPERTIES PREFIX "" OUTPUT_NAME ${_child_module_name})

IF (WIN32)
      SET_TARGET_PROPERTIES(${_logical_name} PROPERTIES SUFFIX ".pyd" IMPORT_PREFIX "_")
    ENDIF (WIN32)

INSTALL(TARGETS ${_logical_name} DESTINATION "${PYTHON_SITE_PACKAGES_DIR}/${_parent_module_path}")

ENDMACRO(ADD_SIP_PYTHON_MODULE)

0707010000000B000041ED00000286000000640000000359FFB9EB00000000000000000000000000000000000000000000001900000000libSavitar-3.6.0/pugixml0707010000000C000081A400000286000000640000000159FFB9EB00000BDA000000000000000000000000000000000000002800000000libSavitar-3.6.0/pugixml/CMakeLists.txtproject(pugixml)

cmake_minimum_required(VERSION 2.6)

option(BUILD_SHARED_LIBS "Build shared instead of static library" OFF)
option(BUILD_TESTS "Build tests" OFF)
option(BUILD_PKGCONFIG "Build in PKGCONFIG mode" OFF)

set(BUILD_DEFINES "" CACHE STRING "Build defines")

if(MSVC)
        option(STATIC_CRT "Use static CRT libraries" OFF)

# Rewrite command line flags to use /MT if necessary
        if(STATIC_CRT)
                foreach(flag_var
                                CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
                                CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
                        if(${flag_var} MATCHES "/MD")
                                string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
                        endif(${flag_var} MATCHES "/MD")
                endforeach(flag_var)
        endif()
endif()

# Pre-defines standard install locations on *nix systems.
include(GNUInstallDirs)
mark_as_advanced(CLEAR CMAKE_INSTALL_LIBDIR CMAKE_INSTALL_INCLUDEDIR)

set(HEADERS src/pugixml.hpp src/pugiconfig.hpp)
set(SOURCES ${HEADERS} src/pugixml.cpp)

if(DEFINED BUILD_DEFINES)
        foreach(DEFINE ${BUILD_DEFINES})
                add_definitions("-D" ${DEFINE})
        endforeach()
endif()

if(BUILD_SHARED_LIBS)
        add_library(pugixml SHARED ${SOURCES})
else()
        add_library(pugixml STATIC ${SOURCES})
endif()

set_target_properties(pugixml PROPERTIES COMPILE_FLAGS -fPIC)

# Enable C++11 long long for compilers that are capable of it
if(NOT ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} STRLESS 3.1 AND ";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_long_long_type;")
        target_compile_features(pugixml PUBLIC cxx_long_long_type)
endif()

set_target_properties(pugixml PROPERTIES VERSION 1.8 SOVERSION 1)
get_target_property(PUGIXML_VERSION_STRING pugixml VERSION)

if(BUILD_PKGCONFIG)
        # Install library into its own directory under LIBDIR
        set(INSTALL_SUFFIX /pugixml-${PUGIXML_VERSION_STRING})
endif()

install(TARGETS pugixml EXPORT pugixml-config
        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}${INSTALL_SUFFIX}
        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}${INSTALL_SUFFIX}
        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
install(FILES ${HEADERS} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}${INSTALL_SUFFIX})
install(EXPORT pugixml-config DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/pugixml)

if(BUILD_PKGCONFIG)
        configure_file(scripts/pugixml.pc.in ${PROJECT_BINARY_DIR}/pugixml.pc @ONLY)
        install(FILES ${PROJECT_BINARY_DIR}/pugixml.pc DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/pkgconfig)
endif()

if(BUILD_TESTS)
        file(GLOB TEST_SOURCES tests/*.cpp)
        file(GLOB FUZZ_SOURCES tests/fuzz_*.cpp)
        list(REMOVE_ITEM TEST_SOURCES ${FUZZ_SOURCES})

add_executable(check ${TEST_SOURCES})
        target_link_libraries(check pugixml)
        add_custom_command(TARGET check POST_BUILD COMMAND check WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
endif()0707010000000D000041ED00000286000000640000000259FFB9EB00000000000000000000000000000000000000000000001D00000000libSavitar-3.6.0/pugixml/src0707010000000E000081A400000286000000640000000159FFB9EB00000AE5000000000000000000000000000000000000002C00000000libSavitar-3.6.0/pugixml/src/pugiconfig.hpp/**
 * pugixml parser - version 1.8
 * --------------------------------------------------------
 * Copyright (C) 2006-2016, by Arseny Kapoulkine (arseny.kapoulkine@gmail.com)
 * Report bugs and download new versions at http://pugixml.org/
 *
 * This library is distributed under the MIT License. See notice at the end
 * of this file.
 *
 * This work is based on the pugxml parser, which is:
 * Copyright (C) 2003, by Kristen Wegner (kristen@tima.net)
 */

#ifndef HEADER_PUGICONFIG_HPP
#define HEADER_PUGICONFIG_HPP

// Uncomment this to enable wchar_t mode
// #define PUGIXML_WCHAR_MODE

// Uncomment this to enable compact mode
// #define PUGIXML_COMPACT

// Uncomment this to disable XPath
// #define PUGIXML_NO_XPATH

// Uncomment this to disable STL
// #define PUGIXML_NO_STL

// Uncomment this to disable exceptions
// #define PUGIXML_NO_EXCEPTIONS

// Set this to control attributes for public classes/functions, i.e.:
// #define PUGIXML_API __declspec(dllexport) // to export all public symbols from DLL
// #define PUGIXML_CLASS __declspec(dllimport) // to import all classes from DLL
// #define PUGIXML_FUNCTION __fastcall // to set calling conventions to all public functions to fastcall
// In absence of PUGIXML_CLASS/PUGIXML_FUNCTION definitions PUGIXML_API is used instead

// Tune these constants to adjust memory-related behavior
// #define PUGIXML_MEMORY_PAGE_SIZE 32768
// #define PUGIXML_MEMORY_OUTPUT_STACK 10240
// #define PUGIXML_MEMORY_XPATH_PAGE_SIZE 4096

// Uncomment this to switch to header-only version
// #define PUGIXML_HEADER_ONLY

// Uncomment this to enable long long support
// #define PUGIXML_HAS_LONG_LONG

#endif

/**
 * Copyright (c) 2006-2016 Arseny Kapoulkine
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
0707010000000F000081A400000286000000640000000159FFB9EB0004F746000000000000000000000000000000000000002900000000libSavitar-3.6.0/pugixml/src/pugixml.cpp/**
 * pugixml parser - version 1.8
 * --------------------------------------------------------
 * Copyright (C) 2006-2016, by Arseny Kapoulkine (arseny.kapoulkine@gmail.com)
 * Report bugs and download new versions at http://pugixml.org/
 *
 * This library is distributed under the MIT License. See notice at the end
 * of this file.
 *
 * This work is based on the pugxml parser, which is:
 * Copyright (C) 2003, by Kristen Wegner (kristen@tima.net)
 */

#ifndef SOURCE_PUGIXML_CPP
#define SOURCE_PUGIXML_CPP

#include "pugixml.hpp"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <limits.h>

#ifdef PUGIXML_WCHAR_MODE
#	include <wchar.h>
#endif

#ifndef PUGIXML_NO_XPATH
#	include <math.h>
#	include <float.h>
#	ifdef PUGIXML_NO_EXCEPTIONS
#		include <setjmp.h>
#	endif
#endif

#ifndef PUGIXML_NO_STL
#	include <istream>
#	include <ostream>
#	include <string>
#endif

// For placement new
#include <new>

#ifdef _MSC_VER
#	pragma warning(push)
#	pragma warning(disable: 4127) // conditional expression is constant
#	pragma warning(disable: 4324) // structure was padded due to __declspec(align())
#	pragma warning(disable: 4611) // interaction between '_setjmp' and C++ object destruction is non-portable
#	pragma warning(disable: 4702) // unreachable code
#	pragma warning(disable: 4996) // this function or variable may be unsafe
#	pragma warning(disable: 4793) // function compiled as native: presence of '_setjmp' makes a function unmanaged
#endif

#ifdef __INTEL_COMPILER
#	pragma warning(disable: 177) // function was declared but never referenced
#	pragma warning(disable: 279) // controlling expression is constant
#	pragma warning(disable: 1478 1786) // function was declared "deprecated"
#	pragma warning(disable: 1684) // conversion from pointer to same-sized integral type
#endif

#if defined(__BORLANDC__) && defined(PUGIXML_HEADER_ONLY)
#	pragma warn -8080 // symbol is declared but never used; disabling this inside push/pop bracket does not make the warning go away
#endif

#ifdef __BORLANDC__
#	pragma option push
#	pragma warn -8008 // condition is always false
#	pragma warn -8066 // unreachable code
#endif

#ifdef __SNC__
// Using diag_push/diag_pop does not disable the warnings inside templates due to a compiler bug
#	pragma diag_suppress=178 // function was declared but never referenced
#	pragma diag_suppress=237 // controlling expression is constant
#endif

// Inlining controls
#if defined(_MSC_VER) && _MSC_VER >= 1300
#	define PUGI__NO_INLINE __declspec(noinline)
#elif defined(__GNUC__)
#	define PUGI__NO_INLINE __attribute__((noinline))
#else
#	define PUGI__NO_INLINE
#endif

// Branch weight controls
#if defined(__GNUC__)
#	define PUGI__UNLIKELY(cond) __builtin_expect(cond, 0)
#else
#	define PUGI__UNLIKELY(cond) (cond)
#endif

// Simple static assertion
#define PUGI__STATIC_ASSERT(cond) { static const char condition_failed[(cond) ? 1 : -1] = {0}; (void)condition_failed[0]; }

// Digital Mars C++ bug workaround for passing char loaded from memory via stack
#ifdef __DMC__
#	define PUGI__DMC_VOLATILE volatile
#else
#	define PUGI__DMC_VOLATILE
#endif

// Borland C++ bug workaround for not defining ::memcpy depending on header include order (can't always use std::memcpy because some compilers don't have it at all)
#if defined(__BORLANDC__) && !defined(__MEM_H_USING_LIST)
using std::memcpy;
using std::memmove;
using std::memset;
#endif

// Some MinGW versions have headers that erroneously omit LLONG_MIN/LLONG_MAX/ULLONG_MAX definitions in strict ANSI mode
#if defined(PUGIXML_HAS_LONG_LONG) && defined(__MINGW32__) && defined(__STRICT_ANSI__) && !defined(LLONG_MAX) && !defined(LLONG_MIN) && !defined(ULLONG_MAX)
#	define LLONG_MAX 9223372036854775807LL
#	define LLONG_MIN (-LLONG_MAX-1)
#	define ULLONG_MAX (2ULL*LLONG_MAX+1)
#endif

// In some environments MSVC is a compiler but the CRT lacks certain MSVC-specific features
#if defined(_MSC_VER) && !defined(__S3E__)
#	define PUGI__MSVC_CRT_VERSION _MSC_VER
#endif

#ifdef PUGIXML_HEADER_ONLY
#	define PUGI__NS_BEGIN namespace pugi { namespace impl {
#	define PUGI__NS_END } }
#	define PUGI__FN inline
#	define PUGI__FN_NO_INLINE inline
#else
#	if defined(_MSC_VER) && _MSC_VER < 1300 // MSVC6 seems to have an amusing bug with anonymous namespaces inside namespaces
#		define PUGI__NS_BEGIN namespace pugi { namespace impl {
#		define PUGI__NS_END } }
#	else
#		define PUGI__NS_BEGIN namespace pugi { namespace impl { namespace {
#		define PUGI__NS_END } } }
#	endif
#	define PUGI__FN
#	define PUGI__FN_NO_INLINE PUGI__NO_INLINE
#endif

// uintptr_t
#if (defined(_MSC_VER) && _MSC_VER < 1600) || (defined(__BORLANDC__) && __BORLANDC__ < 0x561)
namespace pugi
{
#	ifndef _UINTPTR_T_DEFINED
	typedef size_t uintptr_t;
#	endif

typedef unsigned __int8 uint8_t;
	typedef unsigned __int16 uint16_t;
	typedef unsigned __int32 uint32_t;
}
#else
#	include <stdint.h>
#endif

// Memory allocation
PUGI__NS_BEGIN
	PUGI__FN void* default_allocate(size_t size)
	{
		return malloc(size);
	}

PUGI__FN void default_deallocate(void* ptr)
	{
		free(ptr);
	}

template <typename T>
	struct xml_memory_management_function_storage
	{
		static allocation_function allocate;
		static deallocation_function deallocate;
	};

// Global allocation functions are stored in class statics so that in header mode linker deduplicates them
	// Without a template<> we'll get multiple definitions of the same static
	template <typename T> allocation_function xml_memory_management_function_storage<T>::allocate = default_allocate;
	template <typename T> deallocation_function xml_memory_management_function_storage<T>::deallocate = default_deallocate;

typedef xml_memory_management_function_storage<int> xml_memory;
PUGI__NS_END

// String utilities
PUGI__NS_BEGIN
	// Get string length
	PUGI__FN size_t strlength(const char_t* s)
	{
		assert(s);

#ifdef PUGIXML_WCHAR_MODE
		return wcslen(s);
	#else
		return strlen(s);
	#endif
	}

// Compare two strings
	PUGI__FN bool strequal(const char_t* src, const char_t* dst)
	{
		assert(src && dst);

#ifdef PUGIXML_WCHAR_MODE
		return wcscmp(src, dst) == 0;
	#else
		return strcmp(src, dst) == 0;
	#endif
	}

// Compare lhs with [rhs_begin, rhs_end)
	PUGI__FN bool strequalrange(const char_t* lhs, const char_t* rhs, size_t count)
	{
		for (size_t i = 0; i < count; ++i)
			if (lhs[i] != rhs[i])
				return false;

return lhs[count] == 0;
	}

// Get length of wide string, even if CRT lacks wide character support
	PUGI__FN size_t strlength_wide(const wchar_t* s)
	{
		assert(s);

#ifdef PUGIXML_WCHAR_MODE
		return wcslen(s);
	#else
		const wchar_t* end = s;
		while (*end) end++;
		return static_cast<size_t>(end - s);
	#endif
	}
PUGI__NS_END

// auto_ptr-like object for exception recovery
PUGI__NS_BEGIN
	template <typename T> struct auto_deleter
	{
		typedef void (*D)(T*);

T* data;
		D deleter;

auto_deleter(T* data_, D deleter_): data(data_), deleter(deleter_)
		{
		}

~auto_deleter()
		{
			if (data) deleter(data);
		}

T* release()
		{
			T* result = data;
			data = 0;
			return result;
		}
	};
PUGI__NS_END

#ifdef PUGIXML_COMPACT
PUGI__NS_BEGIN
	class compact_hash_table
	{
	public:
		compact_hash_table(): _items(0), _capacity(0), _count(0)
		{
		}

void clear()
		{
			if (_items)
			{
				xml_memory::deallocate(_items);
				_items = 0;
				_capacity = 0;
				_count = 0;
			}
		}

void** find(const void* key)
		{
			assert(key);

if (_capacity == 0) return 0;

size_t hashmod = _capacity - 1;
			size_t bucket = hash(key) & hashmod;

for (size_t probe = 0; probe <= hashmod; ++probe)
			{
				item_t& probe_item = _items[bucket];

if (probe_item.key == key)
					return &probe_item.value;

if (probe_item.key == 0)
					return 0;

// hash collision, quadratic probing
				bucket = (bucket + probe + 1) & hashmod;
			}

assert(false && "Hash table is full");
			return 0;
		}

void** insert(const void* key)
		{
			assert(key);
			assert(_capacity != 0 && _count < _capacity - _capacity / 4);

size_t hashmod = _capacity - 1;
			size_t bucket = hash(key) & hashmod;

for (size_t probe = 0; probe <= hashmod; ++probe)
			{
				item_t& probe_item = _items[bucket];

if (probe_item.key == 0)
				{
					probe_item.key = key;
					_count++;
					return &probe_item.value;
				}

if (probe_item.key == key)
					return &probe_item.value;

// hash collision, quadratic probing
				bucket = (bucket + probe + 1) & hashmod;
			}

assert(false && "Hash table is full");
			return 0;
		}

bool reserve()
		{
			if (_count + 16 >= _capacity - _capacity / 4)
				return rehash();

return true;
		}

private:
		struct item_t
		{
			const void* key;
			void* value;
		};

item_t* _items;
		size_t _capacity;

size_t _count;

bool rehash();

static unsigned int hash(const void* key)
		{
			unsigned int h = static_cast<unsigned int>(reinterpret_cast<uintptr_t>(key));

// MurmurHash3 32-bit finalizer
			h ^= h >> 16;
			h *= 0x85ebca6bu;
			h ^= h >> 13;
			h *= 0xc2b2ae35u;
			h ^= h >> 16;

return h;
		}
	};

PUGI__FN_NO_INLINE bool compact_hash_table::rehash()
	{
		compact_hash_table rt;
		rt._capacity = (_capacity == 0) ? 32 : _capacity * 2;
		rt._items = static_cast<item_t*>(xml_memory::allocate(sizeof(item_t) * rt._capacity));

if (!rt._items)
			return false;

memset(rt._items, 0, sizeof(item_t) * rt._capacity);

for (size_t i = 0; i < _capacity; ++i)
			if (_items[i].key)
				*rt.insert(_items[i].key) = _items[i].value;

if (_items)
			xml_memory::deallocate(_items);

_capacity = rt._capacity;
		_items = rt._items;

assert(_count == rt._count);

return true;
	}

PUGI__NS_END
#endif

PUGI__NS_BEGIN
#ifdef PUGIXML_COMPACT
	static const uintptr_t xml_memory_block_alignment = 4;
#else
	static const uintptr_t xml_memory_block_alignment = sizeof(void*);
#endif

// extra metadata bits
	static const uintptr_t xml_memory_page_contents_shared_mask = 64;
	static const uintptr_t xml_memory_page_name_allocated_mask = 32;
	static const uintptr_t xml_memory_page_value_allocated_mask = 16;
	static const uintptr_t xml_memory_page_type_mask = 15;

// combined masks for string uniqueness
	static const uintptr_t xml_memory_page_name_allocated_or_shared_mask = xml_memory_page_name_allocated_mask | xml_memory_page_contents_shared_mask;
	static const uintptr_t xml_memory_page_value_allocated_or_shared_mask = xml_memory_page_value_allocated_mask | xml_memory_page_contents_shared_mask;

#ifdef PUGIXML_COMPACT
	#define PUGI__GETHEADER_IMPL(object, page, flags) // unused
	#define PUGI__GETPAGE_IMPL(header) (header).get_page()
#else
	#define PUGI__GETHEADER_IMPL(object, page, flags) (((reinterpret_cast<char*>(object) - reinterpret_cast<char*>(page)) << 8) | (flags))
	// this macro casts pointers through void* to avoid 'cast increases required alignment of target type' warnings
	#define PUGI__GETPAGE_IMPL(header) static_cast<impl::xml_memory_page*>(const_cast<void*>(static_cast<const void*>(reinterpret_cast<const char*>(&header) - (header >> 8))))
#endif

#define PUGI__GETPAGE(n) PUGI__GETPAGE_IMPL((n)->header)
	#define PUGI__NODETYPE(n) static_cast<xml_node_type>((n)->header & impl::xml_memory_page_type_mask)

struct xml_allocator;

struct xml_memory_page
	{
		static xml_memory_page* construct(void* memory)
		{
			xml_memory_page* result = static_cast<xml_memory_page*>(memory);

result->allocator = 0;
			result->prev = 0;
			result->next = 0;
			result->busy_size = 0;
			result->freed_size = 0;

#ifdef PUGIXML_COMPACT
			result->compact_string_base = 0;
			result->compact_shared_parent = 0;
			result->compact_page_marker = 0;
		#endif

return result;
		}

xml_allocator* allocator;

xml_memory_page* prev;
		xml_memory_page* next;

size_t busy_size;
		size_t freed_size;

#ifdef PUGIXML_COMPACT
		char_t* compact_string_base;
		void* compact_shared_parent;
		uint32_t* compact_page_marker;
	#endif
	};

static const size_t xml_memory_page_size =
	#ifdef PUGIXML_MEMORY_PAGE_SIZE
		(PUGIXML_MEMORY_PAGE_SIZE)
	#else
		32768
	#endif
		- sizeof(xml_memory_page);

struct xml_memory_string_header
	{
		uint16_t page_offset; // offset from page->data
		uint16_t full_size; // 0 if string occupies whole page
	};

struct xml_allocator
	{
		xml_allocator(xml_memory_page* root): _root(root), _busy_size(root->busy_size)
		{
		#ifdef PUGIXML_COMPACT
			_hash = 0;
		#endif
		}

xml_memory_page* allocate_page(size_t data_size)
		{
			size_t size = sizeof(xml_memory_page) + data_size;

// allocate block with some alignment, leaving memory for worst-case padding
			void* memory = xml_memory::allocate(size);
			if (!memory) return 0;

// prepare page structure
			xml_memory_page* page = xml_memory_page::construct(memory);
			assert(page);

page->allocator = _root->allocator;

return page;
		}

static void deallocate_page(xml_memory_page* page)
		{
			xml_memory::deallocate(page);
		}

void* allocate_memory_oob(size_t size, xml_memory_page*& out_page);

void* allocate_memory(size_t size, xml_memory_page*& out_page)
		{
			if (PUGI__UNLIKELY(_busy_size + size > xml_memory_page_size))
				return allocate_memory_oob(size, out_page);

void* buf = reinterpret_cast<char*>(_root) + sizeof(xml_memory_page) + _busy_size;

_busy_size += size;

out_page = _root;

return buf;
		}

#ifdef PUGIXML_COMPACT
		void* allocate_object(size_t size, xml_memory_page*& out_page)
		{
			void* result = allocate_memory(size + sizeof(uint32_t), out_page);
			if (!result) return 0;

// adjust for marker
			ptrdiff_t offset = static_cast<char*>(result) - reinterpret_cast<char*>(out_page->compact_page_marker);

if (PUGI__UNLIKELY(static_cast<uintptr_t>(offset) >= 256 * xml_memory_block_alignment))
			{
				// insert new marker
				uint32_t* marker = static_cast<uint32_t*>(result);

*marker = static_cast<uint32_t>(reinterpret_cast<char*>(marker) - reinterpret_cast<char*>(out_page));
				out_page->compact_page_marker = marker;

// since we don't reuse the page space until we reallocate it, we can just pretend that we freed the marker block
				// this will make sure deallocate_memory correctly tracks the size
				out_page->freed_size += sizeof(uint32_t);

return marker + 1;
			}
			else
			{
				// roll back uint32_t part
				_busy_size -= sizeof(uint32_t);

return result;
			}
		}
	#else
		void* allocate_object(size_t size, xml_memory_page*& out_page)
		{
			return allocate_memory(size, out_page);
		}
	#endif

void deallocate_memory(void* ptr, size_t size, xml_memory_page* page)
		{
			if (page == _root) page->busy_size = _busy_size;

assert(ptr >= reinterpret_cast<char*>(page) + sizeof(xml_memory_page) && ptr < reinterpret_cast<char*>(page) + sizeof(xml_memory_page) + page->busy_size);
			(void)!ptr;

page->freed_size += size;
			assert(page->freed_size <= page->busy_size);

if (page->freed_size == page->busy_size)
			{
				if (page->next == 0)
				{
					assert(_root == page);

// top page freed, just reset sizes
					page->busy_size = 0;
					page->freed_size = 0;

#ifdef PUGIXML_COMPACT
					// reset compact state to maximize efficiency
					page->compact_string_base = 0;
					page->compact_shared_parent = 0;
					page->compact_page_marker = 0;
				#endif

_busy_size = 0;
				}
				else
				{
					assert(_root != page);
					assert(page->prev);

// remove from the list
					page->prev->next = page->next;
					page->next->prev = page->prev;

// deallocate
					deallocate_page(page);
				}
			}
		}

char_t* allocate_string(size_t length)
		{
			static const size_t max_encoded_offset = (1 << 16) * xml_memory_block_alignment;

PUGI__STATIC_ASSERT(xml_memory_page_size <= max_encoded_offset);

// allocate memory for string and header block
			size_t size = sizeof(xml_memory_string_header) + length * sizeof(char_t);

// round size up to block alignment boundary
			size_t full_size = (size + (xml_memory_block_alignment - 1)) & ~(xml_memory_block_alignment - 1);

xml_memory_page* page;
			xml_memory_string_header* header = static_cast<xml_memory_string_header*>(allocate_memory(full_size, page));

if (!header) return 0;

// setup header
			ptrdiff_t page_offset = reinterpret_cast<char*>(header) - reinterpret_cast<char*>(page) - sizeof(xml_memory_page);

assert(page_offset % xml_memory_block_alignment == 0);
			assert(page_offset >= 0 && static_cast<size_t>(page_offset) < max_encoded_offset);
			header->page_offset = static_cast<uint16_t>(static_cast<size_t>(page_offset) / xml_memory_block_alignment);

// full_size == 0 for large strings that occupy the whole page
			assert(full_size % xml_memory_block_alignment == 0);
			assert(full_size < max_encoded_offset || (page->busy_size == full_size && page_offset == 0));
			header->full_size = static_cast<uint16_t>(full_size < max_encoded_offset ? full_size / xml_memory_block_alignment : 0);

// round-trip through void* to avoid 'cast increases required alignment of target type' warning
			// header is guaranteed a pointer-sized alignment, which should be enough for char_t
			return static_cast<char_t*>(static_cast<void*>(header + 1));
		}

void deallocate_string(char_t* string)
		{
			// this function casts pointers through void* to avoid 'cast increases required alignment of target type' warnings
			// we're guaranteed the proper (pointer-sized) alignment on the input string if it was allocated via allocate_string

// get header
			xml_memory_string_header* header = static_cast<xml_memory_string_header*>(static_cast<void*>(string)) - 1;
			assert(header);

// deallocate
			size_t page_offset = sizeof(xml_memory_page) + header->page_offset * xml_memory_block_alignment;
			xml_memory_page* page = reinterpret_cast<xml_memory_page*>(static_cast<void*>(reinterpret_cast<char*>(header) - page_offset));

// if full_size == 0 then this string occupies the whole page
			size_t full_size = header->full_size == 0 ? page->busy_size : header->full_size * xml_memory_block_alignment;

deallocate_memory(header, full_size, page);
		}

bool reserve()
		{
		#ifdef PUGIXML_COMPACT
			return _hash->reserve();
		#else
			return true;
		#endif
		}

xml_memory_page* _root;
		size_t _busy_size;

#ifdef PUGIXML_COMPACT
		compact_hash_table* _hash;
	#endif
	};

PUGI__FN_NO_INLINE void* xml_allocator::allocate_memory_oob(size_t size, xml_memory_page*& out_page)
	{
		const size_t large_allocation_threshold = xml_memory_page_size / 4;

xml_memory_page* page = allocate_page(size <= large_allocation_threshold ? xml_memory_page_size : size);
		out_page = page;

if (!page) return 0;

if (size <= large_allocation_threshold)
		{
			_root->busy_size = _busy_size;

// insert page at the end of linked list
			page->prev = _root;
			_root->next = page;
			_root = page;

_busy_size = size;
		}
		else
		{
			// insert page before the end of linked list, so that it is deleted as soon as possible
			// the last page is not deleted even if it's empty (see deallocate_memory)
			assert(_root->prev);

page->prev = _root->prev;
			page->next = _root;

_root->prev->next = page;
			_root->prev = page;

page->busy_size = size;
		}

return reinterpret_cast<char*>(page) + sizeof(xml_memory_page);
	}
PUGI__NS_END

#ifdef PUGIXML_COMPACT
PUGI__NS_BEGIN
	static const uintptr_t compact_alignment_log2 = 2;
	static const uintptr_t compact_alignment = 1 << compact_alignment_log2;

class compact_header
	{
	public:
		compact_header(xml_memory_page* page, unsigned int flags)
		{
			PUGI__STATIC_ASSERT(xml_memory_block_alignment == compact_alignment);

ptrdiff_t offset = (reinterpret_cast<char*>(this) - reinterpret_cast<char*>(page->compact_page_marker));
			assert(offset % compact_alignment == 0 && static_cast<uintptr_t>(offset) < 256 * compact_alignment);

_page = static_cast<unsigned char>(offset >> compact_alignment_log2);
			_flags = static_cast<unsigned char>(flags);
		}

void operator&=(uintptr_t mod)
		{
			_flags &= static_cast<unsigned char>(mod);
		}

void operator|=(uintptr_t mod)
		{
			_flags |= static_cast<unsigned char>(mod);
		}

uintptr_t operator&(uintptr_t mod) const
		{
			return _flags & mod;
		}

xml_memory_page* get_page() const
		{
			// round-trip through void* to silence 'cast increases required alignment of target type' warnings
			const char* page_marker = reinterpret_cast<const char*>(this) - (_page << compact_alignment_log2);
			const char* page = page_marker - *reinterpret_cast<const uint32_t*>(static_cast<const void*>(page_marker));

return const_cast<xml_memory_page*>(reinterpret_cast<const xml_memory_page*>(static_cast<const void*>(page)));
		}

private:
		unsigned char _page;
		unsigned char _flags;
	};

PUGI__FN xml_memory_page* compact_get_page(const void* object, int header_offset)
	{
		const compact_header* header = reinterpret_cast<const compact_header*>(static_cast<const char*>(object) - header_offset);

return header->get_page();
	}

template <int header_offset, typename T> PUGI__FN_NO_INLINE T* compact_get_value(const void* object)
	{
		return static_cast<T*>(*compact_get_page(object, header_offset)->allocator->_hash->find(object));
	}

template <int header_offset, typename T> PUGI__FN_NO_INLINE void compact_set_value(const void* object, T* value)
	{
		*compact_get_page(object, header_offset)->allocator->_hash->insert(object) = value;
	}

template <typename T, int header_offset, int start = -126> class compact_pointer
	{
	public:
		compact_pointer(): _data(0)
		{
		}

void operator=(const compact_pointer& rhs)
		{
			*this = rhs + 0;
		}

void operator=(T* value)
		{
			if (value)
			{
				// value is guaranteed to be compact-aligned; 'this' is not
				// our decoding is based on 'this' aligned to compact alignment downwards (see operator T*)
				// so for negative offsets (e.g. -3) we need to adjust the diff by compact_alignment - 1 to
				// compensate for arithmetic shift rounding for negative values
				ptrdiff_t diff = reinterpret_cast<char*>(value) - reinterpret_cast<char*>(this);
				ptrdiff_t offset = ((diff + int(compact_alignment - 1)) >> compact_alignment_log2) - start;

if (static_cast<uintptr_t>(offset) <= 253)
					_data = static_cast<unsigned char>(offset + 1);
				else
				{
					compact_set_value<header_offset>(this, value);

_data = 255;
				}
			}
			else
				_data = 0;
		}

operator T*() const
		{
			if (_data)
			{
				if (_data < 255)
				{
					uintptr_t base = reinterpret_cast<uintptr_t>(this) & ~(compact_alignment - 1);

return reinterpret_cast<T*>(base + ((_data - 1 + start) << compact_alignment_log2));
				}
				else
					return compact_get_value<header_offset, T>(this);
			}
			else
				return 0;
		}

T* operator->() const
		{
			return *this;
		}

private:
		unsigned char _data;
	};

template <typename T, int header_offset> class compact_pointer_parent
	{
	public:
		compact_pointer_parent(): _data(0)
		{
		}

void operator=(const compact_pointer_parent& rhs)
		{
			*this = rhs + 0;
		}

void operator=(T* value)
		{
			if (value)
			{
				// value is guaranteed to be compact-aligned; 'this' is not
				// our decoding is based on 'this' aligned to compact alignment downwards (see operator T*)
				// so for negative offsets (e.g. -3) we need to adjust the diff by compact_alignment - 1 to
				// compensate for arithmetic shift behavior for negative values
				ptrdiff_t diff = reinterpret_cast<char*>(value) - reinterpret_cast<char*>(this);
				ptrdiff_t offset = ((diff + int(compact_alignment - 1)) >> compact_alignment_log2) + 65533;

if (static_cast<uintptr_t>(offset) <= 65533)
				{
					_data = static_cast<unsigned short>(offset + 1);
				}
				else
				{
					xml_memory_page* page = compact_get_page(this, header_offset);

if (PUGI__UNLIKELY(page->compact_shared_parent == 0))
						page->compact_shared_parent = value;

if (page->compact_shared_parent == value)
					{
						_data = 65534;
					}
					else
					{
						compact_set_value<header_offset>(this, value);

_data = 65535;
					}
				}
			}
			else
			{
				_data = 0;
			}
		}

operator T*() const
		{
			if (_data)
			{
				if (_data < 65534)
				{
					uintptr_t base = reinterpret_cast<uintptr_t>(this) & ~(compact_alignment - 1);

return reinterpret_cast<T*>(base + ((_data - 1 - 65533) << compact_alignment_log2));
				}
				else if (_data == 65534)
					return static_cast<T*>(compact_get_page(this, header_offset)->compact_shared_parent);
				else
					return compact_get_value<header_offset, T>(this);
			}
			else
				return 0;
		}

T* operator->() const
		{
			return *this;
		}

private:
		uint16_t _data;
	};

template <int header_offset, int base_offset> class compact_string
	{
	public:
		compact_string(): _data(0)
		{
		}

void operator=(const compact_string& rhs)
		{
			*this = rhs + 0;
		}

void operator=(char_t* value)
		{
			if (value)
			{
				xml_memory_page* page = compact_get_page(this, header_offset);

if (PUGI__UNLIKELY(page->compact_string_base == 0))
					page->compact_string_base = value;

ptrdiff_t offset = value - page->compact_string_base;

if (static_cast<uintptr_t>(offset) < (65535 << 7))
				{
					// round-trip through void* to silence 'cast increases required alignment of target type' warnings
					uint16_t* base = reinterpret_cast<uint16_t*>(static_cast<void*>(reinterpret_cast<char*>(this) - base_offset));

if (*base == 0)
					{
						*base = static_cast<uint16_t>((offset >> 7) + 1);
						_data = static_cast<unsigned char>((offset & 127) + 1);
					}
					else
					{
						ptrdiff_t remainder = offset - ((*base - 1) << 7);

if (static_cast<uintptr_t>(remainder) <= 253)
						{
							_data = static_cast<unsigned char>(remainder + 1);
						}
						else
						{
							compact_set_value<header_offset>(this, value);

_data = 255;
						}
					}
				}
				else
				{
					compact_set_value<header_offset>(this, value);

_data = 255;
				}
			}
			else
			{
				_data = 0;
			}
		}

operator char_t*() const
		{
			if (_data)
			{
				if (_data < 255)
				{
					xml_memory_page* page = compact_get_page(this, header_offset);

// round-trip through void* to silence 'cast increases required alignment of target type' warnings
					const uint16_t* base = reinterpret_cast<const uint16_t*>(static_cast<const void*>(reinterpret_cast<const char*>(this) - base_offset));
					assert(*base);

ptrdiff_t offset = ((*base - 1) << 7) + (_data - 1);

return page->compact_string_base + offset;
				}
				else
				{
					return compact_get_value<header_offset, char_t>(this);
				}
			}
			else
				return 0;
		}

private:
		unsigned char _data;
	};
PUGI__NS_END
#endif

#ifdef PUGIXML_COMPACT
namespace pugi
{
	struct xml_attribute_struct
	{
		xml_attribute_struct(impl::xml_memory_page* page): header(page, 0), namevalue_base(0)
		{
			PUGI__STATIC_ASSERT(sizeof(xml_attribute_struct) == 8);
		}

impl::compact_header header;

uint16_t namevalue_base;

impl::compact_string<4, 2> name;
		impl::compact_string<5, 3> value;

impl::compact_pointer<xml_attribute_struct, 6> prev_attribute_c;
		impl::compact_pointer<xml_attribute_struct, 7, 0> next_attribute;
	};

struct xml_node_struct
	{
		xml_node_struct(impl::xml_memory_page* page, xml_node_type type): header(page, type), namevalue_base(0)
		{
			PUGI__STATIC_ASSERT(sizeof(xml_node_struct) == 12);
		}

impl::compact_header header;

uint16_t namevalue_base;

impl::compact_string<4, 2> name;
		impl::compact_string<5, 3> value;

impl::compact_pointer_parent<xml_node_struct, 6> parent;

impl::compact_pointer<xml_node_struct, 8, 0> first_child;

impl::compact_pointer<xml_node_struct,  9>    prev_sibling_c;
		impl::compact_pointer<xml_node_struct, 10, 0> next_sibling;

impl::compact_pointer<xml_attribute_struct, 11, 0> first_attribute;
	};
}
#else
namespace pugi
{
	struct xml_attribute_struct
	{
		xml_attribute_struct(impl::xml_memory_page* page): name(0), value(0), prev_attribute_c(0), next_attribute(0)
		{
			header = PUGI__GETHEADER_IMPL(this, page, 0);
		}

uintptr_t header;

char_t*	name;
		char_t*	value;

xml_attribute_struct* prev_attribute_c;
		xml_attribute_struct* next_attribute;
	};

struct xml_node_struct
	{
		xml_node_struct(impl::xml_memory_page* page, xml_node_type type): name(0), value(0), parent(0), first_child(0), prev_sibling_c(0), next_sibling(0), first_attribute(0)
		{
			header = PUGI__GETHEADER_IMPL(this, page, type);
		}

uintptr_t header;

char_t* name;
		char_t* value;

xml_node_struct* parent;

xml_node_struct* first_child;

xml_node_struct* prev_sibling_c;
		xml_node_struct* next_sibling;

xml_attribute_struct* first_attribute;
	};
}
#endif

PUGI__NS_BEGIN
	struct xml_extra_buffer
	{
		char_t* buffer;
		xml_extra_buffer* next;
	};

struct xml_document_struct: public xml_node_struct, public xml_allocator
	{
		xml_document_struct(xml_memory_page* page): xml_node_struct(page, node_document), xml_allocator(page), buffer(0), extra_buffers(0)
		{
		}

const char_t* buffer;

xml_extra_buffer* extra_buffers;

#ifdef PUGIXML_COMPACT
		compact_hash_table hash;
	#endif
	};

template <typename Object> inline xml_allocator& get_allocator(const Object* object)
	{
		assert(object);

return *PUGI__GETPAGE(object)->allocator;
	}

template <typename Object> inline xml_document_struct& get_document(const Object* object)
	{
		assert(object);

return *static_cast<xml_document_struct*>(PUGI__GETPAGE(object)->allocator);
	}
PUGI__NS_END

// Low-level DOM operations
PUGI__NS_BEGIN
	inline xml_attribute_struct* allocate_attribute(xml_allocator& alloc)
	{
		xml_memory_page* page;
		void* memory = alloc.allocate_object(sizeof(xml_attribute_struct), page);
		if (!memory) return 0;

return new (memory) xml_attribute_struct(page);
	}

inline xml_node_struct* allocate_node(xml_allocator& alloc, xml_node_type type)
	{
		xml_memory_page* page;
		void* memory = alloc.allocate_object(sizeof(xml_node_struct), page);
		if (!memory) return 0;

return new (memory) xml_node_struct(page, type);
	}

inline void destroy_attribute(xml_attribute_struct* a, xml_allocator& alloc)
	{
		if (a->header & impl::xml_memory_page_name_allocated_mask)
			alloc.deallocate_string(a->name);

if (a->header & impl::xml_memory_page_value_allocated_mask)
			alloc.deallocate_string(a->value);

alloc.deallocate_memory(a, sizeof(xml_attribute_struct), PUGI__GETPAGE(a));
	}

inline void destroy_node(xml_node_struct* n, xml_allocator& alloc)
	{
		if (n->header & impl::xml_memory_page_name_allocated_mask)
			alloc.deallocate_string(n->name);

if (n->header & impl::xml_memory_page_value_allocated_mask)
			alloc.deallocate_string(n->value);

for (xml_attribute_struct* attr = n->first_attribute; attr; )
		{
			xml_attribute_struct* next = attr->next_attribute;

destroy_attribute(attr, alloc);

attr = next;
		}

for (xml_node_struct* child = n->first_child; child; )
		{
			xml_node_struct* next = child->next_sibling;

destroy_node(child, alloc);

child = next;
		}

alloc.deallocate_memory(n, sizeof(xml_node_struct), PUGI__GETPAGE(n));
	}

inline void append_node(xml_node_struct* child, xml_node_struct* node)
	{
		child->parent = node;

xml_node_struct* head = node->first_child;

if (head)
		{
			xml_node_struct* tail = head->prev_sibling_c;

tail->next_sibling = child;
			child->prev_sibling_c = tail;
			head->prev_sibling_c = child;
		}
		else
		{
			node->first_child = child;
			child->prev_sibling_c = child;
		}
	}

inline void prepend_node(xml_node_struct* child, xml_node_struct* node)
	{
		child->parent = node;

xml_node_struct* head = node->first_child;

if (head)
		{
			child->prev_sibling_c = head->prev_sibling_c;
			head->prev_sibling_c = child;
		}
		else
			child->prev_sibling_c = child;

child->next_sibling = head;
		node->first_child = child;
	}

inline void insert_node_after(xml_node_struct* child, xml_node_struct* node)
	{
		xml_node_struct* parent = node->parent;

child->parent = parent;

if (node->next_sibling)
			node->next_sibling->prev_sibling_c = child;
		else
			parent->first_child->prev_sibling_c = child;

child->next_sibling = node->next_sibling;
		child->prev_sibling_c = node;

node->next_sibling = child;
	}

inline void insert_node_before(xml_node_struct* child, xml_node_struct* node)
	{
		xml_node_struct* parent = node->parent;

child->parent = parent;

if (node->prev_sibling_c->next_sibling)
			node->prev_sibling_c->next_sibling = child;
		else
			parent->first_child = child;

child->prev_sibling_c = node->prev_sibling_c;
		child->next_sibling = node;

node->prev_sibling_c = child;
	}

inline void remove_node(xml_node_struct* node)
	{
		xml_node_struct* parent = node->parent;

if (node->next_sibling)
			node->next_sibling->prev_sibling_c = node->prev_sibling_c;
		else
			parent->first_child->prev_sibling_c = node->prev_sibling_c;

if (node->prev_sibling_c->next_sibling)
			node->prev_sibling_c->next_sibling = node->next_sibling;
		else
			parent->first_child = node->next_sibling;

node->parent = 0;
		node->prev_sibling_c = 0;
		node->next_sibling = 0;
	}

inline void append_attribute(xml_attribute_struct* attr, xml_node_struct* node)
	{
		xml_attribute_struct* head = node->first_attribute;

if (head)
		{
			xml_attribute_struct* tail = head->prev_attribute_c;

tail->next_attribute = attr;
			attr->prev_attribute_c = tail;
			head->prev_attribute_c = attr;
		}
		else
		{
			node->first_attribute = attr;
			attr->prev_attribute_c = attr;
		}
	}

inline void prepend_attribute(xml_attribute_struct* attr, xml_node_struct* node)
	{
		xml_attribute_struct* head = node->first_attribute;

if (head)
		{
			attr->prev_attribute_c = head->prev_attribute_c;
			head->prev_attribute_c = attr;
		}
		else
			attr->prev_attribute_c = attr;

attr->next_attribute = head;
		node->first_attribute = attr;
	}

inline void insert_attribute_after(xml_attribute_struct* attr, xml_attribute_struct* place, xml_node_struct* node)
	{
		if (place->next_attribute)
			place->next_attribute->prev_attribute_c = attr;
		else
			node->first_attribute->prev_attribute_c = attr;

attr->next_attribute = place->next_attribute;
		attr->prev_attribute_c = place;
		place->next_attribute = attr;
	}

inline void insert_attribute_before(xml_attribute_struct* attr, xml_attribute_struct* place, xml_node_struct* node)
	{
		if (place->prev_attribute_c->next_attribute)
			place->prev_attribute_c->next_attribute = attr;
		else
			node->first_attribute = attr;

attr->prev_attribute_c = place->prev_attribute_c;
		attr->next_attribute = place;
		place->prev_attribute_c = attr;
	}

inline void remove_attribute(xml_attribute_struct* attr, xml_node_struct* node)
	{
		if (attr->next_attribute)
			attr->next_attribute->prev_attribute_c = attr->prev_attribute_c;
		else
			node->first_attribute->prev_attribute_c = attr->prev_attribute_c;

if (attr->prev_attribute_c->next_attribute)
			attr->prev_attribute_c->next_attribute = attr->next_attribute;
		else
			node->first_attribute = attr->next_attribute;

attr->prev_attribute_c = 0;
		attr->next_attribute = 0;
	}

PUGI__FN_NO_INLINE xml_node_struct* append_new_node(xml_node_struct* node, xml_allocator& alloc, xml_node_type type = node_element)
	{
		if (!alloc.reserve()) return 0;

xml_node_struct* child = allocate_node(alloc, type);
		if (!child) return 0;

append_node(child, node);

return child;
	}

PUGI__FN_NO_INLINE xml_attribute_struct* append_new_attribute(xml_node_struct* node, xml_allocator& alloc)
	{
		if (!alloc.reserve()) return 0;

xml_attribute_struct* attr = allocate_attribute(alloc);
		if (!attr) return 0;

append_attribute(attr, node);

return attr;
	}
PUGI__NS_END

// Helper classes for code generation
PUGI__NS_BEGIN
	struct opt_false
	{
		enum { value = 0 };
	};

struct opt_true
	{
		enum { value = 1 };
	};
PUGI__NS_END

// Unicode utilities
PUGI__NS_BEGIN
	inline uint16_t endian_swap(uint16_t value)
	{
		return static_cast<uint16_t>(((value & 0xff) << 8) | (value >> 8));
	}

inline uint32_t endian_swap(uint32_t value)
	{
		return ((value & 0xff) << 24) | ((value & 0xff00) << 8) | ((value & 0xff0000) >> 8) | (value >> 24);
	}

struct utf8_counter
	{
		typedef size_t value_type;

static value_type low(value_type result, uint32_t ch)
		{
			// U+0000..U+007F
			if (ch < 0x80) return result + 1;
			// U+0080..U+07FF
			else if (ch < 0x800) return result + 2;
			// U+0800..U+FFFF
			else return result + 3;
		}

static value_type high(value_type result, uint32_t)
		{
			// U+10000..U+10FFFF
			return result + 4;
		}
	};

struct utf8_writer
	{
		typedef uint8_t* value_type;

static value_type low(value_type result, uint32_t ch)
		{
			// U+0000..U+007F
			if (ch < 0x80)
			{
				*result = static_cast<uint8_t>(ch);
				return result + 1;
			}
			// U+0080..U+07FF
			else if (ch < 0x800)
			{
				result[0] = static_cast<uint8_t>(0xC0 | (ch >> 6));
				result[1] = static_cast<uint8_t>(0x80 | (ch & 0x3F));
				return result + 2;
			}
			// U+0800..U+FFFF
			else
			{
				result[0] = static_cast<uint8_t>(0xE0 | (ch >> 12));
				result[1] = static_cast<uint8_t>(0x80 | ((ch >> 6) & 0x3F));
				result[2] = static_cast<uint8_t>(0x80 | (ch & 0x3F));
				return result + 3;
			}
		}

static value_type high(value_type result, uint32_t ch)
		{
			// U+10000..U+10FFFF
			result[0] = static_cast<uint8_t>(0xF0 | (ch >> 18));
			result[1] = static_cast<uint8_t>(0x80 | ((ch >> 12) & 0x3F));
			result[2] = static_cast<uint8_t>(0x80 | ((ch >> 6) & 0x3F));
			result[3] = static_cast<uint8_t>(0x80 | (ch & 0x3F));
			return result + 4;
		}

static value_type any(value_type result, uint32_t ch)
		{
			return (ch < 0x10000) ? low(result, ch) : high(result, ch);
		}
	};

struct utf16_counter
	{
		typedef size_t value_type;

static value_type low(value_type result, uint32_t)
		{
			return result + 1;
		}

static value_type high(value_type result, uint32_t)
		{
			return result + 2;
		}
	};

struct utf16_writer
	{
		typedef uint16_t* value_type;

static value_type low(value_type result, uint32_t ch)
		{
			*result = static_cast<uint16_t>(ch);

return result + 1;
		}

static value_type high(value_type result, uint32_t ch)
		{
			uint32_t msh = static_cast<uint32_t>(ch - 0x10000) >> 10;
			uint32_t lsh = static_cast<uint32_t>(ch - 0x10000) & 0x3ff;

result[0] = static_cast<uint16_t>(0xD800 + msh);
			result[1] = static_cast<uint16_t>(0xDC00 + lsh);

return result + 2;
		}

static value_type any(value_type result, uint32_t ch)
		{
			return (ch < 0x10000) ? low(result, ch) : high(result, ch);
		}
	};

struct utf32_counter
	{
		typedef size_t value_type;

static value_type low(value_type result, uint32_t)
		{
			return result + 1;
		}

static value_type high(value_type result, uint32_t)
		{
			return result + 1;
		}
	};

struct utf32_writer
	{
		typedef uint32_t* value_type;

static value_type low(value_type result, uint32_t ch)
		{
			*result = ch;

return result + 1;
		}

static value_type high(value_type result, uint32_t ch)
		{
			*result = ch;

return result + 1;
		}

static value_type any(value_type result, uint32_t ch)
		{
			*result = ch;

return result + 1;
		}
	};

struct latin1_writer
	{
		typedef uint8_t* value_type;

static value_type low(value_type result, uint32_t ch)
		{
			*result = static_cast<uint8_t>(ch > 255 ? '?' : ch);

return result + 1;
		}

static value_type high(value_type result, uint32_t ch)
		{
			(void)ch;

*result = '?';

return result + 1;
		}
	};

struct utf8_decoder
	{
		typedef uint8_t type;

template <typename Traits> static inline typename Traits::value_type process(const uint8_t* data, size_t size, typename Traits::value_type result, Traits)
		{
			const uint8_t utf8_byte_mask = 0x3f;

while (size)
			{
				uint8_t lead = *data;

// 0xxxxxxx -> U+0000..U+007F
				if (lead < 0x80)
				{
					result = Traits::low(result, lead);
					data += 1;
					size -= 1;

// process aligned single-byte (ascii) blocks
					if ((reinterpret_cast<uintptr_t>(data) & 3) == 0)
					{
						// round-trip through void* to silence 'cast increases required alignment of target type' warnings
						while (size >= 4 && (*static_cast<const uint32_t*>(static_cast<const void*>(data)) & 0x80808080) == 0)
						{
							result = Traits::low(result, data[0]);
							result = Traits::low(result, data[1]);
							result = Traits::low(result, data[2]);
							result = Traits::low(result, data[3]);
							data += 4;
							size -= 4;
						}
					}
				}
				// 110xxxxx -> U+0080..U+07FF
				else if (static_cast<unsigned int>(lead - 0xC0) < 0x20 && size >= 2 && (data[1] & 0xc0) == 0x80)
				{
					result = Traits::low(result, ((lead & ~0xC0) << 6) | (data[1] & utf8_byte_mask));
					data += 2;
					size -= 2;
				}
				// 1110xxxx -> U+0800-U+FFFF
				else if (static_cast<unsigned int>(lead - 0xE0) < 0x10 && size >= 3 && (data[1] & 0xc0) == 0x80 && (data[2] & 0xc0) == 0x80)
				{
					result = Traits::low(result, ((lead & ~0xE0) << 12) | ((data[1] & utf8_byte_mask) << 6) | (data[2] & utf8_byte_mask));
					data += 3;
					size -= 3;
				}
				// 11110xxx -> U+10000..U+10FFFF
				else if (static_cast<unsigned int>(lead - 0xF0) < 0x08 && size >= 4 && (data[1] & 0xc0) == 0x80 && (data[2] & 0xc0) == 0x80 && (data[3] & 0xc0) == 0x80)
				{
					result = Traits::high(result, ((lead & ~0xF0) << 18) | ((data[1] & utf8_byte_mask) << 12) | ((data[2] & utf8_byte_mask) << 6) | (data[3] & utf8_byte_mask));
					data += 4;
					size -= 4;
				}
				// 10xxxxxx or 11111xxx -> invalid
				else
				{
					data += 1;
					size -= 1;
				}
			}

return result;
		}
	};

template <typename opt_swap> struct utf16_decoder
	{
		typedef uint16_t type;

template <typename Traits> static inline typename Traits::value_type process(const uint16_t* data, size_t size, typename Traits::value_type result, Traits)
		{
			while (size)
			{
				uint16_t lead = opt_swap::value ? endian_swap(*data) : *data;

// U+0000..U+D7FF
				if (lead < 0xD800)
				{
					result = Traits::low(result, lead);
					data += 1;
					size -= 1;
				}
				// U+E000..U+FFFF
				else if (static_cast<unsigned int>(lead - 0xE000) < 0x2000)
				{
					result = Traits::low(result, lead);
					data += 1;
					size -= 1;
				}
				// surrogate pair lead
				else if (static_cast<unsigned int>(lead - 0xD800) < 0x400 && size >= 2)
				{
					uint16_t next = opt_swap::value ? endian_swap(data[1]) : data[1];

if (static_cast<unsigned int>(next - 0xDC00) < 0x400)
					{
						result = Traits::high(result, 0x10000 + ((lead & 0x3ff) << 10) + (next & 0x3ff));
						data += 2;
						size -= 2;
					}
					else
					{
						data += 1;
						size -= 1;
					}
				}
				else
				{
					data += 1;
					size -= 1;
				}
			}

return result;
		}
	};

template <typename opt_swap> struct utf32_decoder
	{
		typedef uint32_t type;

template <typename Traits> static inline typename Traits::value_type process(const uint32_t* data, size_t size, typename Traits::value_type result, Traits)
		{
			while (size)
			{
				uint32_t lead = opt_swap::value ? endian_swap(*data) : *data;

// U+0000..U+FFFF
				if (lead < 0x10000)
				{
					result = Traits::low(result, lead);
					data += 1;
					size -= 1;
				}
				// U+10000..U+10FFFF
				else
				{
					result = Traits::high(result, lead);
					data += 1;
					size -= 1;
				}
			}

return result;
		}
	};

struct latin1_decoder
	{
		typedef uint8_t type;

template <typename Traits> static inline typename Traits::value_type process(const uint8_t* data, size_t size, typename Traits::value_type result, Traits)
		{
			while (size)
			{
				result = Traits::low(result, *data);
				data += 1;
				size -= 1;
			}

return result;
		}
	};

template <size_t size> struct wchar_selector;

template <> struct wchar_selector<2>
	{
		typedef uint16_t type;
		typedef utf16_counter counter;
		typedef utf16_writer writer;
		typedef utf16_decoder<opt_false> decoder;
	};

template <> struct wchar_selector<4>
	{
		typedef uint32_t type;
		typedef utf32_counter counter;
		typedef utf32_writer writer;
		typedef utf32_decoder<opt_false> decoder;
	};

typedef wchar_selector<sizeof(wchar_t)>::counter wchar_counter;
	typedef wchar_selector<sizeof(wchar_t)>::writer wchar_writer;

struct wchar_decoder
	{
		typedef wchar_t type;

template <typename Traits> static inline typename Traits::value_type process(const wchar_t* data, size_t size, typename Traits::value_type result, Traits traits)
		{
			typedef wchar_selector<sizeof(wchar_t)>::decoder decoder;

return decoder::process(reinterpret_cast<const typename decoder::type*>(data), size, result, traits);
		}
	};

#ifdef PUGIXML_WCHAR_MODE
	PUGI__FN void convert_wchar_endian_swap(wchar_t* result, const wchar_t* data, size_t length)
	{
		for (size_t i = 0; i < length; ++i)
			result[i] = static_cast<wchar_t>(endian_swap(static_cast<wchar_selector<sizeof(wchar_t)>::type>(data[i])));
	}
#endif
PUGI__NS_END

PUGI__NS_BEGIN
	enum chartype_t
	{
		ct_parse_pcdata = 1,	// \0, &, \r, <
		ct_parse_attr = 2,		// \0, &, \r, ', "
		ct_parse_attr_ws = 4,	// \0, &, \r, ', ", \n, tab
		ct_space = 8,			// \r, \n, space, tab
		ct_parse_cdata = 16,	// \0, ], >, \r
		ct_parse_comment = 32,	// \0, -, >, \r
		ct_symbol = 64,			// Any symbol > 127, a-z, A-Z, 0-9, _, :, -, .
		ct_start_symbol = 128	// Any symbol > 127, a-z, A-Z, _, :
	};

static const unsigned char chartype_table[256] =
	{
		55,  0,   0,   0,   0,   0,   0,   0,      0,   12,  12,  0,   0,   63,  0,   0,   // 0-15
		0,   0,   0,   0,   0,   0,   0,   0,      0,   0,   0,   0,   0,   0,   0,   0,   // 16-31
		8,   0,   6,   0,   0,   0,   7,   6,      0,   0,   0,   0,   0,   96,  64,  0,   // 32-47
		64,  64,  64,  64,  64,  64,  64,  64,     64,  64,  192, 0,   1,   0,   48,  0,   // 48-63
		0,   192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192, // 64-79
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 0,   0,   16,  0,   192, // 80-95
		0,   192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192, // 96-111
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 0, 0, 0, 0, 0,           // 112-127

192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192, // 128+
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192,
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192,
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192,
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192,
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192,
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192,
		192, 192, 192, 192, 192, 192, 192, 192,    192, 192, 192, 192, 192, 192, 192, 192
	};

enum chartypex_t
	{
		ctx_special_pcdata = 1,   // Any symbol >= 0 and < 32 (except \t, \r, \n), &, <, >
		ctx_special_attr = 2,     // Any symbol >= 0 and < 32 (except \t), &, <, >, "
		ctx_start_symbol = 4,	  // Any symbol > 127, a-z, A-Z, _
		ctx_digit = 8,			  // 0-9
		ctx_symbol = 16			  // Any symbol > 127, a-z, A-Z, 0-9, _, -, .
	};

static const unsigned char chartypex_table[256] =
	{
		3,  3,  3,  3,  3,  3,  3,  3,     3,  0,  2,  3,  3,  2,  3,  3,     // 0-15
		3,  3,  3,  3,  3,  3,  3,  3,     3,  3,  3,  3,  3,  3,  3,  3,     // 16-31
		0,  0,  2,  0,  0,  0,  3,  0,     0,  0,  0,  0,  0, 16, 16,  0,     // 32-47
		24, 24, 24, 24, 24, 24, 24, 24,    24, 24, 0,  0,  3,  0,  3,  0,     // 48-63

0,  20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,    // 64-79
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 0,  0,  0,  0,  20,    // 80-95
		0,  20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,    // 96-111
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 0,  0,  0,  0,  0,     // 112-127

20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,    // 128+
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20,
		20, 20, 20, 20, 20, 20, 20, 20,    20, 20, 20, 20, 20, 20, 20, 20
	};

#ifdef PUGIXML_WCHAR_MODE
	#define PUGI__IS_CHARTYPE_IMPL(c, ct, table) ((static_cast<unsigned int>(c) < 128 ? table[static_cast<unsigned int>(c)] : table[128]) & (ct))
#else
	#define PUGI__IS_CHARTYPE_IMPL(c, ct, table) (table[static_cast<unsigned char>(c)] & (ct))
#endif

#define PUGI__IS_CHARTYPE(c, ct) PUGI__IS_CHARTYPE_IMPL(c, ct, chartype_table)
	#define PUGI__IS_CHARTYPEX(c, ct) PUGI__IS_CHARTYPE_IMPL(c, ct, chartypex_table)

PUGI__FN bool is_little_endian()
	{
		unsigned int ui = 1;

return *reinterpret_cast<unsigned char*>(&ui) == 1;
	}

PUGI__FN xml_encoding get_wchar_encoding()
	{
		PUGI__STATIC_ASSERT(sizeof(wchar_t) == 2 || sizeof(wchar_t) == 4);

if (sizeof(wchar_t) == 2)
			return is_little_endian() ? encoding_utf16_le : encoding_utf16_be;
		else
			return is_little_endian() ? encoding_utf32_le : encoding_utf32_be;
	}

PUGI__FN bool parse_declaration_encoding(const uint8_t* data, size_t size, const uint8_t*& out_encoding, size_t& out_length)
	{
	#define PUGI__SCANCHAR(ch) { if (offset >= size || data[offset] != ch) return false; offset++; }
	#define PUGI__SCANCHARTYPE(ct) { while (offset < size && PUGI__IS_CHARTYPE(data[offset], ct)) offset++; }

// check if we have a non-empty XML declaration
		if (size < 6 || !((data[0] == '<') & (data[1] == '?') & (data[2] == 'x') & (data[3] == 'm') & (data[4] == 'l') && PUGI__IS_CHARTYPE(data[5], ct_space)))
			return false;

// scan XML declaration until the encoding field
		for (size_t i = 6; i + 1 < size; ++i)
		{
			// declaration can not contain ? in quoted values
			if (data[i] == '?')
				return false;

if (data[i] == 'e' && data[i + 1] == 'n')
			{
				size_t offset = i;

// encoding follows the version field which can't contain 'en' so this has to be the encoding if XML is well formed
				PUGI__SCANCHAR('e'); PUGI__SCANCHAR('n'); PUGI__SCANCHAR('c'); PUGI__SCANCHAR('o');
				PUGI__SCANCHAR('d'); PUGI__SCANCHAR('i'); PUGI__SCANCHAR('n'); PUGI__SCANCHAR('g');

// S? = S?
				PUGI__SCANCHARTYPE(ct_space);
				PUGI__SCANCHAR('=');
				PUGI__SCANCHARTYPE(ct_space);

// the only two valid delimiters are ' and "
				uint8_t delimiter = (offset < size && data[offset] == '"') ? '"' : '\'';

PUGI__SCANCHAR(delimiter);

size_t start = offset;

out_encoding = data + offset;

PUGI__SCANCHARTYPE(ct_symbol);

out_length = offset - start;

PUGI__SCANCHAR(delimiter);

return true;
			}
		}

return false;

#undef PUGI__SCANCHAR
	#undef PUGI__SCANCHARTYPE
	}

PUGI__FN xml_encoding guess_buffer_encoding(const uint8_t* data, size_t size)
	{
		// skip encoding autodetection if input buffer is too small
		if (size < 4) return encoding_utf8;

uint8_t d0 = data[0], d1 = data[1], d2 = data[2], d3 = data[3];

// look for BOM in first few bytes
		if (d0 == 0 && d1 == 0 && d2 == 0xfe && d3 == 0xff) return encoding_utf32_be;
		if (d0 == 0xff && d1 == 0xfe && d2 == 0 && d3 == 0) return encoding_utf32_le;
		if (d0 == 0xfe && d1 == 0xff) return encoding_utf16_be;
		if (d0 == 0xff && d1 == 0xfe) return encoding_utf16_le;
		if (d0 == 0xef && d1 == 0xbb && d2 == 0xbf) return encoding_utf8;

// look for <, <? or <?xm in various encodings
		if (d0 == 0 && d1 == 0 && d2 == 0 && d3 == 0x3c) return encoding_utf32_be;
		if (d0 == 0x3c && d1 == 0 && d2 == 0 && d3 == 0) return encoding_utf32_le;
		if (d0 == 0 && d1 == 0x3c && d2 == 0 && d3 == 0x3f) return encoding_utf16_be;
		if (d0 == 0x3c && d1 == 0 && d2 == 0x3f && d3 == 0) return encoding_utf16_le;

// look for utf16 < followed by node name (this may fail, but is better than utf8 since it's zero terminated so early)
		if (d0 == 0 && d1 == 0x3c) return encoding_utf16_be;
		if (d0 == 0x3c && d1 == 0) return encoding_utf16_le;

// no known BOM detected; parse declaration
		const uint8_t* enc = 0;
		size_t enc_length = 0;

if (d0 == 0x3c && d1 == 0x3f && d2 == 0x78 && d3 == 0x6d && parse_declaration_encoding(data, size, enc, enc_length))
		{
			// iso-8859-1 (case-insensitive)
			if (enc_length == 10
				&& (enc[0] | ' ') == 'i' && (enc[1] | ' ') == 's' && (enc[2] | ' ') == 'o'
				&& enc[3] == '-' && enc[4] == '8' && enc[5] == '8' && enc[6] == '5' && enc[7] == '9'
				&& enc[8] == '-' && enc[9] == '1')
				return encoding_latin1;

// latin1 (case-insensitive)
			if (enc_length == 6
				&& (enc[0] | ' ') == 'l' && (enc[1] | ' ') == 'a' && (enc[2] | ' ') == 't'
				&& (enc[3] | ' ') == 'i' && (enc[4] | ' ') == 'n'
				&& enc[5] == '1')
				return encoding_latin1;
		}

return encoding_utf8;
	}

PUGI__FN xml_encoding get_buffer_encoding(xml_encoding encoding, const void* contents, size_t size)
	{
		// replace wchar encoding with utf implementation
		if (encoding == encoding_wchar) return get_wchar_encoding();

// replace utf16 encoding with utf16 with specific endianness
		if (encoding == encoding_utf16) return is_little_endian() ? encoding_utf16_le : encoding_utf16_be;

// replace utf32 encoding with utf32 with specific endianness
		if (encoding == encoding_utf32) return is_little_endian() ? encoding_utf32_le : encoding_utf32_be;

// only do autodetection if no explicit encoding is requested
		if (encoding != encoding_auto) return encoding;

// try to guess encoding (based on XML specification, Appendix F.1)
		const uint8_t* data = static_cast<const uint8_t*>(contents);

return guess_buffer_encoding(data, size);
	}

PUGI__FN bool get_mutable_buffer(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, bool is_mutable)
	{
		size_t length = size / sizeof(char_t);

if (is_mutable)
		{
			out_buffer = static_cast<char_t*>(const_cast<void*>(contents));
			out_length = length;
		}
		else
		{
			char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
			if (!buffer) return false;

if (contents)
				memcpy(buffer, contents, length * sizeof(char_t));
			else
				assert(length == 0);

buffer[length] = 0;

out_buffer = buffer;
			out_length = length + 1;
		}

return true;
	}

#ifdef PUGIXML_WCHAR_MODE
	PUGI__FN bool need_endian_swap_utf(xml_encoding le, xml_encoding re)
	{
		return (le == encoding_utf16_be && re == encoding_utf16_le) || (le == encoding_utf16_le && re == encoding_utf16_be) ||
			   (le == encoding_utf32_be && re == encoding_utf32_le) || (le == encoding_utf32_le && re == encoding_utf32_be);
	}

PUGI__FN bool convert_buffer_endian_swap(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, bool is_mutable)
	{
		const char_t* data = static_cast<const char_t*>(contents);
		size_t length = size / sizeof(char_t);

if (is_mutable)
		{
			char_t* buffer = const_cast<char_t*>(data);

convert_wchar_endian_swap(buffer, data, length);

out_buffer = buffer;
			out_length = length;
		}
		else
		{
			char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
			if (!buffer) return false;

convert_wchar_endian_swap(buffer, data, length);
			buffer[length] = 0;

out_buffer = buffer;
			out_length = length + 1;
		}

return true;
	}

template <typename D> PUGI__FN bool convert_buffer_generic(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, D)
	{
		const typename D::type* data = static_cast<const typename D::type*>(contents);
		size_t data_length = size / sizeof(typename D::type);

// first pass: get length in wchar_t units
		size_t length = D::process(data, data_length, 0, wchar_counter());

// allocate buffer of suitable length
		char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
		if (!buffer) return false;

// second pass: convert utf16 input to wchar_t
		wchar_writer::value_type obegin = reinterpret_cast<wchar_writer::value_type>(buffer);
		wchar_writer::value_type oend = D::process(data, data_length, obegin, wchar_writer());

assert(oend == obegin + length);
		*oend = 0;

out_buffer = buffer;
		out_length = length + 1;

return true;
	}

PUGI__FN bool convert_buffer(char_t*& out_buffer, size_t& out_length, xml_encoding encoding, const void* contents, size_t size, bool is_mutable)
	{
		// get native encoding
		xml_encoding wchar_encoding = get_wchar_encoding();

// fast path: no conversion required
		if (encoding == wchar_encoding)
			return get_mutable_buffer(out_buffer, out_length, contents, size, is_mutable);

// only endian-swapping is required
		if (need_endian_swap_utf(encoding, wchar_encoding))
			return convert_buffer_endian_swap(out_buffer, out_length, contents, size, is_mutable);

// source encoding is utf8
		if (encoding == encoding_utf8)
			return convert_buffer_generic(out_buffer, out_length, contents, size, utf8_decoder());

// source encoding is utf16
		if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;

return (native_encoding == encoding) ?
				convert_buffer_generic(out_buffer, out_length, contents, size, utf16_decoder<opt_false>()) :
				convert_buffer_generic(out_buffer, out_length, contents, size, utf16_decoder<opt_true>());
		}

// source encoding is utf32
		if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;

return (native_encoding == encoding) ?
				convert_buffer_generic(out_buffer, out_length, contents, size, utf32_decoder<opt_false>()) :
				convert_buffer_generic(out_buffer, out_length, contents, size, utf32_decoder<opt_true>());
		}

// source encoding is latin1
		if (encoding == encoding_latin1)
			return convert_buffer_generic(out_buffer, out_length, contents, size, latin1_decoder());

assert(false && "Invalid encoding");
		return false;
	}
#else
	template <typename D> PUGI__FN bool convert_buffer_generic(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, D)
	{
		const typename D::type* data = static_cast<const typename D::type*>(contents);
		size_t data_length = size / sizeof(typename D::type);

// first pass: get length in utf8 units
		size_t length = D::process(data, data_length, 0, utf8_counter());

// allocate buffer of suitable length
		char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
		if (!buffer) return false;

// second pass: convert utf16 input to utf8
		uint8_t* obegin = reinterpret_cast<uint8_t*>(buffer);
		uint8_t* oend = D::process(data, data_length, obegin, utf8_writer());

assert(oend == obegin + length);
		*oend = 0;

out_buffer = buffer;
		out_length = length + 1;

return true;
	}

PUGI__FN size_t get_latin1_7bit_prefix_length(const uint8_t* data, size_t size)
	{
		for (size_t i = 0; i < size; ++i)
			if (data[i] > 127)
				return i;

return size;
	}

PUGI__FN bool convert_buffer_latin1(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, bool is_mutable)
	{
		const uint8_t* data = static_cast<const uint8_t*>(contents);
		size_t data_length = size;

// get size of prefix that does not need utf8 conversion
		size_t prefix_length = get_latin1_7bit_prefix_length(data, data_length);
		assert(prefix_length <= data_length);

const uint8_t* postfix = data + prefix_length;
		size_t postfix_length = data_length - prefix_length;

// if no conversion is needed, just return the original buffer
		if (postfix_length == 0) return get_mutable_buffer(out_buffer, out_length, contents, size, is_mutable);

// first pass: get length in utf8 units
		size_t length = prefix_length + latin1_decoder::process(postfix, postfix_length, 0, utf8_counter());

// allocate buffer of suitable length
		char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
		if (!buffer) return false;

// second pass: convert latin1 input to utf8
		memcpy(buffer, data, prefix_length);

uint8_t* obegin = reinterpret_cast<uint8_t*>(buffer);
		uint8_t* oend = latin1_decoder::process(postfix, postfix_length, obegin + prefix_length, utf8_writer());

assert(oend == obegin + length);
		*oend = 0;

out_buffer = buffer;
		out_length = length + 1;

return true;
	}

PUGI__FN bool convert_buffer(char_t*& out_buffer, size_t& out_length, xml_encoding encoding, const void* contents, size_t size, bool is_mutable)
	{
		// fast path: no conversion required
		if (encoding == encoding_utf8)
			return get_mutable_buffer(out_buffer, out_length, contents, size, is_mutable);

// source encoding is utf16
		if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;

// source encoding is utf32
		if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;

// source encoding is latin1
		if (encoding == encoding_latin1)
			return convert_buffer_latin1(out_buffer, out_length, contents, size, is_mutable);

assert(false && "Invalid encoding");
		return false;
	}
#endif

PUGI__FN size_t as_utf8_begin(const wchar_t* str, size_t length)
	{
		// get length in utf8 characters
		return wchar_decoder::process(str, length, 0, utf8_counter());
	}

PUGI__FN void as_utf8_end(char* buffer, size_t size, const wchar_t* str, size_t length)
	{
		// convert to utf8
		uint8_t* begin = reinterpret_cast<uint8_t*>(buffer);
		uint8_t* end = wchar_decoder::process(str, length, begin, utf8_writer());

assert(begin + size == end);
		(void)!end;
		(void)!size;
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN std::string as_utf8_impl(const wchar_t* str, size_t length)
	{
		// first pass: get length in utf8 characters
		size_t size = as_utf8_begin(str, length);

// allocate resulting string
		std::string result;
		result.resize(size);

// second pass: convert to utf8
		if (size > 0) as_utf8_end(&result[0], size, str, length);

return result;
	}

PUGI__FN std::basic_string<wchar_t> as_wide_impl(const char* str, size_t size)
	{
		const uint8_t* data = reinterpret_cast<const uint8_t*>(str);

// first pass: get length in wchar_t units
		size_t length = utf8_decoder::process(data, size, 0, wchar_counter());

// allocate resulting string
		std::basic_string<wchar_t> result;
		result.resize(length);

// second pass: convert to wchar_t
		if (length > 0)
		{
			wchar_writer::value_type begin = reinterpret_cast<wchar_writer::value_type>(&result[0]);
			wchar_writer::value_type end = utf8_decoder::process(data, size, begin, wchar_writer());

assert(begin + length == end);
			(void)!end;
		}

return result;
	}
#endif

template <typename Header>
	inline bool strcpy_insitu_allow(size_t length, const Header& header, uintptr_t header_mask, char_t* target)
	{
		// never reuse shared memory
		if (header & xml_memory_page_contents_shared_mask) return false;

size_t target_length = strlength(target);

// always reuse document buffer memory if possible
		if ((header & header_mask) == 0) return target_length >= length;

// reuse heap memory if waste is not too great
		const size_t reuse_threshold = 32;

return target_length >= length && (target_length < reuse_threshold || target_length - length < target_length / 2);
	}

template <typename String, typename Header>
	PUGI__FN bool strcpy_insitu(String& dest, Header& header, uintptr_t header_mask, const char_t* source, size_t source_length)
	{
		if (source_length == 0)
		{
			// empty string and null pointer are equivalent, so just deallocate old memory
			xml_allocator* alloc = PUGI__GETPAGE_IMPL(header)->allocator;

if (header & header_mask) alloc->deallocate_string(dest);

// mark the string as not allocated
			dest = 0;
			header &= ~header_mask;

return true;
		}
		else if (dest && strcpy_insitu_allow(source_length, header, header_mask, dest))
		{
			// we can reuse old buffer, so just copy the new data (including zero terminator)
			memcpy(dest, source, source_length * sizeof(char_t));
			dest[source_length] = 0;

return true;
		}
		else
		{
			xml_allocator* alloc = PUGI__GETPAGE_IMPL(header)->allocator;

if (!alloc->reserve()) return false;

// allocate new buffer
			char_t* buf = alloc->allocate_string(source_length + 1);
			if (!buf) return false;

// copy the string (including zero terminator)
			memcpy(buf, source, source_length * sizeof(char_t));
			buf[source_length] = 0;

// deallocate old buffer (*after* the above to protect against overlapping memory and/or allocation failures)
			if (header & header_mask) alloc->deallocate_string(dest);

// the string is now allocated, so set the flag
			dest = buf;
			header |= header_mask;

return true;
		}
	}

struct gap
	{
		char_t* end;
		size_t size;

gap(): end(0), size(0)
		{
		}

// Push new gap, move s count bytes further (skipping the gap).
		// Collapse previous gap.
		void push(char_t*& s, size_t count)
		{
			if (end) // there was a gap already; collapse it
			{
				// Move [old_gap_end, new_gap_start) to [old_gap_start, ...)
				assert(s >= end);
				memmove(end - size, end, reinterpret_cast<char*>(s) - reinterpret_cast<char*>(end));
			}

s += count; // end of current gap

// "merge" two gaps
			end = s;
			size += count;
		}

// Collapse all gaps, return past-the-end pointer
		char_t* flush(char_t* s)
		{
			if (end)
			{
				// Move [old_gap_end, current_pos) to [old_gap_start, ...)
				assert(s >= end);
				memmove(end - size, end, reinterpret_cast<char*>(s) - reinterpret_cast<char*>(end));

return s - size;
			}
			else return s;
		}
	};

PUGI__FN char_t* strconv_escape(char_t* s, gap& g)
	{
		char_t* stre = s + 1;

switch (*stre)
		{
			case '#':	// &#...
			{
				unsigned int ucsc = 0;

if (stre[1] == 'x') // &#x... (hex code)
				{
					stre += 2;

char_t ch = *stre;

if (ch == ';') return stre;

for (;;)
					{
						if (static_cast<unsigned int>(ch - '0') <= 9)
							ucsc = 16 * ucsc + (ch - '0');
						else if (static_cast<unsigned int>((ch | ' ') - 'a') <= 5)
							ucsc = 16 * ucsc + ((ch | ' ') - 'a' + 10);
						else if (ch == ';')
							break;
						else // cancel
							return stre;

ch = *++stre;
					}

++stre;
				}
				else	// &#... (dec code)
				{
					char_t ch = *++stre;

if (ch == ';') return stre;

for (;;)
					{
						if (static_cast<unsigned int>(static_cast<unsigned int>(ch) - '0') <= 9)
							ucsc = 10 * ucsc + (ch - '0');
						else if (ch == ';')
							break;
						else // cancel
							return stre;

ch = *++stre;
					}

++stre;
				}

#ifdef PUGIXML_WCHAR_MODE
				s = reinterpret_cast<char_t*>(wchar_writer::any(reinterpret_cast<wchar_writer::value_type>(s), ucsc));
			#else
				s = reinterpret_cast<char_t*>(utf8_writer::any(reinterpret_cast<uint8_t*>(s), ucsc));
			#endif

g.push(s, stre - s);
				return stre;
			}

case 'a':	// &a
			{
				++stre;

if (*stre == 'm') // &am
				{
					if (*++stre == 'p' && *++stre == ';') // &amp;
					{
						*s++ = '&';
						++stre;

g.push(s, stre - s);
						return stre;
					}
				}
				else if (*stre == 'p') // &ap
				{
					if (*++stre == 'o' && *++stre == 's' && *++stre == ';') // &apos;
					{
						*s++ = '\'';
						++stre;

g.push(s, stre - s);
						return stre;
					}
				}
				break;
			}

case 'g': // &g
			{
				if (*++stre == 't' && *++stre == ';') // &gt;
				{
					*s++ = '>';
					++stre;

g.push(s, stre - s);
					return stre;
				}
				break;
			}

case 'l': // &l
			{
				if (*++stre == 't' && *++stre == ';') // &lt;
				{
					*s++ = '<';
					++stre;

g.push(s, stre - s);
					return stre;
				}
				break;
			}

case 'q': // &q
			{
				if (*++stre == 'u' && *++stre == 'o' && *++stre == 't' && *++stre == ';') // &quot;
				{
					*s++ = '"';
					++stre;

g.push(s, stre - s);
					return stre;
				}
				break;
			}

default:
				break;
		}

return stre;
	}

// Parser utilities
	#define PUGI__ENDSWITH(c, e)        ((c) == (e) || ((c) == 0 && endch == (e)))
	#define PUGI__SKIPWS()              { while (PUGI__IS_CHARTYPE(*s, ct_space)) ++s; }
	#define PUGI__OPTSET(OPT)           ( optmsk & (OPT) )
	#define PUGI__PUSHNODE(TYPE)        { cursor = append_new_node(cursor, *alloc, TYPE); if (!cursor) PUGI__THROW_ERROR(status_out_of_memory, s); }
	#define PUGI__POPNODE()             { cursor = cursor->parent; }
	#define PUGI__SCANFOR(X)            { while (*s != 0 && !(X)) ++s; }
	#define PUGI__SCANWHILE(X)          { while (X) ++s; }
	#define PUGI__SCANWHILE_UNROLL(X)   { for (;;) { char_t ss = s[0]; if (PUGI__UNLIKELY(!(X))) { break; } ss = s[1]; if (PUGI__UNLIKELY(!(X))) { s += 1; break; } ss = s[2]; if (PUGI__UNLIKELY(!(X))) { s += 2; break; } ss = s[3]; if (PUGI__UNLIKELY(!(X))) { s += 3; break; } s += 4; } }
	#define PUGI__ENDSEG()              { ch = *s; *s = 0; ++s; }
	#define PUGI__THROW_ERROR(err, m)   return error_offset = m, error_status = err, static_cast<char_t*>(0)
	#define PUGI__CHECK_ERROR(err, m)   { if (*s == 0) PUGI__THROW_ERROR(err, m); }

PUGI__FN char_t* strconv_comment(char_t* s, char_t endch)
	{
		gap g;

while (true)
		{
			PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_comment));

if (*s == '\r') // Either a single 0x0d or 0x0d 0x0a pair
			{
				*s++ = '\n'; // replace first one with 0x0a

if (*s == '\n') g.push(s, 1);
			}
			else if (s[0] == '-' && s[1] == '-' && PUGI__ENDSWITH(s[2], '>')) // comment ends here
			{
				*g.flush(s) = 0;

return s + (s[2] == '>' ? 3 : 2);
			}
			else if (*s == 0)
			{
				return 0;
			}
			else ++s;
		}
	}

PUGI__FN char_t* strconv_cdata(char_t* s, char_t endch)
	{
		gap g;

while (true)
		{
			PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_cdata));

if (*s == '\r') // Either a single 0x0d or 0x0d 0x0a pair
			{
				*s++ = '\n'; // replace first one with 0x0a

if (*s == '\n') g.push(s, 1);
			}
			else if (s[0] == ']' && s[1] == ']' && PUGI__ENDSWITH(s[2], '>')) // CDATA ends here
			{
				*g.flush(s) = 0;

return s + 1;
			}
			else if (*s == 0)
			{
				return 0;
			}
			else ++s;
		}
	}

typedef char_t* (*strconv_pcdata_t)(char_t*);

template <typename opt_trim, typename opt_eol, typename opt_escape> struct strconv_pcdata_impl
	{
		static char_t* parse(char_t* s)
		{
			gap g;

char_t* begin = s;

while (true)
			{
				PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_pcdata));

if (*s == '<') // PCDATA ends here
				{
					char_t* end = g.flush(s);

if (opt_trim::value)
						while (end > begin && PUGI__IS_CHARTYPE(end[-1], ct_space))
							--end;

*end = 0;

return s + 1;
				}
				else if (opt_eol::value && *s == '\r') // Either a single 0x0d or 0x0d 0x0a pair
				{
					*s++ = '\n'; // replace first one with 0x0a

if (*s == '\n') g.push(s, 1);
				}
				else if (opt_escape::value && *s == '&')
				{
					s = strconv_escape(s, g);
				}
				else if (*s == 0)
				{
					char_t* end = g.flush(s);

if (opt_trim::value)
						while (end > begin && PUGI__IS_CHARTYPE(end[-1], ct_space))
							--end;

*end = 0;

return s;
				}
				else ++s;
			}
		}
	};

PUGI__FN strconv_pcdata_t get_strconv_pcdata(unsigned int optmask)
	{
		PUGI__STATIC_ASSERT(parse_escapes == 0x10 && parse_eol == 0x20 && parse_trim_pcdata == 0x0800);

switch (((optmask >> 4) & 3) | ((optmask >> 9) & 4)) // get bitmask for flags (eol escapes trim)
		{
		case 0: return strconv_pcdata_impl<opt_false, opt_false, opt_false>::parse;
		case 1: return strconv_pcdata_impl<opt_false, opt_false, opt_true>::parse;
		case 2: return strconv_pcdata_impl<opt_false, opt_true, opt_false>::parse;
		case 3: return strconv_pcdata_impl<opt_false, opt_true, opt_true>::parse;
		case 4: return strconv_pcdata_impl<opt_true, opt_false, opt_false>::parse;
		case 5: return strconv_pcdata_impl<opt_true, opt_false, opt_true>::parse;
		case 6: return strconv_pcdata_impl<opt_true, opt_true, opt_false>::parse;
		case 7: return strconv_pcdata_impl<opt_true, opt_true, opt_true>::parse;
		default: assert(false); return 0; // should not get here
		}
	}

typedef char_t* (*strconv_attribute_t)(char_t*, char_t);

template <typename opt_escape> struct strconv_attribute_impl
	{
		static char_t* parse_wnorm(char_t* s, char_t end_quote)
		{
			gap g;

// trim leading whitespaces
			if (PUGI__IS_CHARTYPE(*s, ct_space))
			{
				char_t* str = s;

do ++str;
				while (PUGI__IS_CHARTYPE(*str, ct_space));

g.push(s, str - s);
			}

while (true)
			{
				PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_attr_ws | ct_space));

if (*s == end_quote)
				{
					char_t* str = g.flush(s);

do *str-- = 0;
					while (PUGI__IS_CHARTYPE(*str, ct_space));

return s + 1;
				}
				else if (PUGI__IS_CHARTYPE(*s, ct_space))
				{
					*s++ = ' ';

if (PUGI__IS_CHARTYPE(*s, ct_space))
					{
						char_t* str = s + 1;
						while (PUGI__IS_CHARTYPE(*str, ct_space)) ++str;

g.push(s, str - s);
					}
				}
				else if (opt_escape::value && *s == '&')
				{
					s = strconv_escape(s, g);
				}
				else if (!*s)
				{
					return 0;
				}
				else ++s;
			}
		}

static char_t* parse_wconv(char_t* s, char_t end_quote)
		{
			gap g;

while (true)
			{
				PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_attr_ws));

if (*s == end_quote)
				{
					*g.flush(s) = 0;

return s + 1;
				}
				else if (PUGI__IS_CHARTYPE(*s, ct_space))
				{
					if (*s == '\r')
					{
						*s++ = ' ';

if (*s == '\n') g.push(s, 1);
					}
					else *s++ = ' ';
				}
				else if (opt_escape::value && *s == '&')
				{
					s = strconv_escape(s, g);
				}
				else if (!*s)
				{
					return 0;
				}
				else ++s;
			}
		}

static char_t* parse_eol(char_t* s, char_t end_quote)
		{
			gap g;

while (true)
			{
				PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_attr));

if (*s == end_quote)
				{
					*g.flush(s) = 0;

return s + 1;
				}
				else if (*s == '\r')
				{
					*s++ = '\n';

if (*s == '\n') g.push(s, 1);
				}
				else if (opt_escape::value && *s == '&')
				{
					s = strconv_escape(s, g);
				}
				else if (!*s)
				{
					return 0;
				}
				else ++s;
			}
		}

static char_t* parse_simple(char_t* s, char_t end_quote)
		{
			gap g;

while (true)
			{
				PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_attr));

if (*s == end_quote)
				{
					*g.flush(s) = 0;

return s + 1;
				}
				else if (opt_escape::value && *s == '&')
				{
					s = strconv_escape(s, g);
				}
				else if (!*s)
				{
					return 0;
				}
				else ++s;
			}
		}
	};

PUGI__FN strconv_attribute_t get_strconv_attribute(unsigned int optmask)
	{
		PUGI__STATIC_ASSERT(parse_escapes == 0x10 && parse_eol == 0x20 && parse_wconv_attribute == 0x40 && parse_wnorm_attribute == 0x80);

switch ((optmask >> 4) & 15) // get bitmask for flags (wconv wnorm eol escapes)
		{
		case 0:  return strconv_attribute_impl<opt_false>::parse_simple;
		case 1:  return strconv_attribute_impl<opt_true>::parse_simple;
		case 2:  return strconv_attribute_impl<opt_false>::parse_eol;
		case 3:  return strconv_attribute_impl<opt_true>::parse_eol;
		case 4:  return strconv_attribute_impl<opt_false>::parse_wconv;
		case 5:  return strconv_attribute_impl<opt_true>::parse_wconv;
		case 6:  return strconv_attribute_impl<opt_false>::parse_wconv;
		case 7:  return strconv_attribute_impl<opt_true>::parse_wconv;
		case 8:  return strconv_attribute_impl<opt_false>::parse_wnorm;
		case 9:  return strconv_attribute_impl<opt_true>::parse_wnorm;
		case 10: return strconv_attribute_impl<opt_false>::parse_wnorm;
		case 11: return strconv_attribute_impl<opt_true>::parse_wnorm;
		case 12: return strconv_attribute_impl<opt_false>::parse_wnorm;
		case 13: return strconv_attribute_impl<opt_true>::parse_wnorm;
		case 14: return strconv_attribute_impl<opt_false>::parse_wnorm;
		case 15: return strconv_attribute_impl<opt_true>::parse_wnorm;
		default: assert(false); return 0; // should not get here
		}
	}

inline xml_parse_result make_parse_result(xml_parse_status status, ptrdiff_t offset = 0)
	{
		xml_parse_result result;
		result.status = status;
		result.offset = offset;

return result;
	}

struct xml_parser
	{
		xml_allocator* alloc;
		char_t* error_offset;
		xml_parse_status error_status;

xml_parser(xml_allocator* alloc_): alloc(alloc_), error_offset(0), error_status(status_ok)
		{
		}

// DOCTYPE consists of nested sections of the following possible types:
		// , <? ... ?>, "...", '...'
		// <![...]]>
		// <!...>
		// First group can not contain nested groups
		// Second group can contain nested groups of the same type
		// Third group can contain all other groups
		char_t* parse_doctype_primitive(char_t* s)
		{
			if (*s == '"' || *s == '\'')
			{
				// quoted string
				char_t ch = *s++;
				PUGI__SCANFOR(*s == ch);
				if (!*s) PUGI__THROW_ERROR(status_bad_doctype, s);

s++;
			}
			else if (s[0] == '<' && s[1] == '?')
			{
				// <? ... ?>
				s += 2;
				PUGI__SCANFOR(s[0] == '?' && s[1] == '>'); // no need for ENDSWITH because ?> can't terminate proper doctype
				if (!*s) PUGI__THROW_ERROR(status_bad_doctype, s);

s += 2;
			}
			else if (s[0] == '<' && s[1] == '!' && s[2] == '-' && s[3] == '-')
			{
				s += 4;
				PUGI__SCANFOR(s[0] == '-' && s[1] == '-' && s[2] == '>'); // no need for ENDSWITH because --> can't terminate proper doctype
				if (!*s) PUGI__THROW_ERROR(status_bad_doctype, s);

s += 3;
			}
			else PUGI__THROW_ERROR(status_bad_doctype, s);

return s;
		}

char_t* parse_doctype_ignore(char_t* s)
		{
			size_t depth = 0;

assert(s[0] == '<' && s[1] == '!' && s[2] == '[');
			s += 3;

while (*s)
			{
				if (s[0] == '<' && s[1] == '!' && s[2] == '[')
				{
					// nested ignore section
					s += 3;
					depth++;
				}
				else if (s[0] == ']' && s[1] == ']' && s[2] == '>')
				{
					// ignore section end
					s += 3;

if (depth == 0)
						return s;

depth--;
				}
				else s++;
			}

PUGI__THROW_ERROR(status_bad_doctype, s);
		}

char_t* parse_doctype_group(char_t* s, char_t endch)
		{
			size_t depth = 0;

assert((s[0] == '<' || s[0] == 0) && s[1] == '!');
			s += 2;

while (*s)
			{
				if (s[0] == '<' && s[1] == '!' && s[2] != '-')
				{
					if (s[2] == '[')
					{
						// ignore
						s = parse_doctype_ignore(s);
						if (!s) return s;
					}
					else
					{
						// some control group
						s += 2;
						depth++;
					}
				}
				else if (s[0] == '<' || s[0] == '"' || s[0] == '\'')
				{
					// unknown tag (forbidden), or some primitive group
					s = parse_doctype_primitive(s);
					if (!s) return s;
				}
				else if (*s == '>')
				{
					if (depth == 0)
						return s;

depth--;
					s++;
				}
				else s++;
			}

if (depth != 0 || endch != '>') PUGI__THROW_ERROR(status_bad_doctype, s);

return s;
		}

char_t* parse_exclamation(char_t* s, xml_node_struct* cursor, unsigned int optmsk, char_t endch)
		{
			// parse node contents, starting with exclamation mark
			++s;

if (*s == '-') // '<!-...'
			{
				++s;

if (*s == '-') // '<!--...'
				{
					++s;

if (PUGI__OPTSET(parse_comments))
					{
						PUGI__PUSHNODE(node_comment); // Append a new node on the tree.
						cursor->value = s; // Save the offset.
					}

if (PUGI__OPTSET(parse_eol) && PUGI__OPTSET(parse_comments))
					{
						s = strconv_comment(s, endch);

if (!s) PUGI__THROW_ERROR(status_bad_comment, cursor->value);
					}
					else
					{
						// Scan for terminating '-->'.
						PUGI__SCANFOR(s[0] == '-' && s[1] == '-' && PUGI__ENDSWITH(s[2], '>'));
						PUGI__CHECK_ERROR(status_bad_comment, s);

if (PUGI__OPTSET(parse_comments))
							*s = 0; // Zero-terminate this segment at the first terminating '-'.

s += (s[2] == '>' ? 3 : 2); // Step over the '\0->'.
					}
				}
				else PUGI__THROW_ERROR(status_bad_comment, s);
			}
			else if (*s == '[')
			{
				// '<![CDATA[...'
				if (*++s=='C' && *++s=='D' && *++s=='A' && *++s=='T' && *++s=='A' && *++s == '[')
				{
					++s;

if (PUGI__OPTSET(parse_cdata))
					{
						PUGI__PUSHNODE(node_cdata); // Append a new node on the tree.
						cursor->value = s; // Save the offset.

if (PUGI__OPTSET(parse_eol))
						{
							s = strconv_cdata(s, endch);

if (!s) PUGI__THROW_ERROR(status_bad_cdata, cursor->value);
						}
						else
						{
							// Scan for terminating ']]>'.
							PUGI__SCANFOR(s[0] == ']' && s[1] == ']' && PUGI__ENDSWITH(s[2], '>'));
							PUGI__CHECK_ERROR(status_bad_cdata, s);

*s++ = 0; // Zero-terminate this segment.
						}
					}
					else // Flagged for discard, but we still have to scan for the terminator.
					{
						// Scan for terminating ']]>'.
						PUGI__SCANFOR(s[0] == ']' && s[1] == ']' && PUGI__ENDSWITH(s[2], '>'));
						PUGI__CHECK_ERROR(status_bad_cdata, s);

++s;
					}

s += (s[1] == '>' ? 2 : 1); // Step over the last ']>'.
				}
				else PUGI__THROW_ERROR(status_bad_cdata, s);
			}
			else if (s[0] == 'D' && s[1] == 'O' && s[2] == 'C' && s[3] == 'T' && s[4] == 'Y' && s[5] == 'P' && PUGI__ENDSWITH(s[6], 'E'))
			{
				s -= 2;

if (cursor->parent) PUGI__THROW_ERROR(status_bad_doctype, s);

char_t* mark = s + 9;

s = parse_doctype_group(s, endch);
				if (!s) return s;

assert((*s == 0 && endch == '>') || *s == '>');
				if (*s) *s++ = 0;

if (PUGI__OPTSET(parse_doctype))
				{
					while (PUGI__IS_CHARTYPE(*mark, ct_space)) ++mark;

PUGI__PUSHNODE(node_doctype);

cursor->value = mark;
				}
			}
			else if (*s == 0 && endch == '-') PUGI__THROW_ERROR(status_bad_comment, s);
			else if (*s == 0 && endch == '[') PUGI__THROW_ERROR(status_bad_cdata, s);
			else PUGI__THROW_ERROR(status_unrecognized_tag, s);

return s;
		}

char_t* parse_question(char_t* s, xml_node_struct*& ref_cursor, unsigned int optmsk, char_t endch)
		{
			// load into registers
			xml_node_struct* cursor = ref_cursor;
			char_t ch = 0;

// parse node contents, starting with question mark
			++s;

// read PI target
			char_t* target = s;

if (!PUGI__IS_CHARTYPE(*s, ct_start_symbol)) PUGI__THROW_ERROR(status_bad_pi, s);

PUGI__SCANWHILE(PUGI__IS_CHARTYPE(*s, ct_symbol));
			PUGI__CHECK_ERROR(status_bad_pi, s);

// determine node type; stricmp / strcasecmp is not portable
			bool declaration = (target[0] | ' ') == 'x' && (target[1] | ' ') == 'm' && (target[2] | ' ') == 'l' && target + 3 == s;

if (declaration ? PUGI__OPTSET(parse_declaration) : PUGI__OPTSET(parse_pi))
			{
				if (declaration)
				{
					// disallow non top-level declarations
					if (cursor->parent) PUGI__THROW_ERROR(status_bad_pi, s);

PUGI__PUSHNODE(node_declaration);
				}
				else
				{
					PUGI__PUSHNODE(node_pi);
				}

cursor->name = target;

PUGI__ENDSEG();

// parse value/attributes
				if (ch == '?')
				{
					// empty node
					if (!PUGI__ENDSWITH(*s, '>')) PUGI__THROW_ERROR(status_bad_pi, s);
					s += (*s == '>');

PUGI__POPNODE();
				}
				else if (PUGI__IS_CHARTYPE(ch, ct_space))
				{
					PUGI__SKIPWS();

// scan for tag end
					char_t* value = s;

PUGI__SCANFOR(s[0] == '?' && PUGI__ENDSWITH(s[1], '>'));
					PUGI__CHECK_ERROR(status_bad_pi, s);

if (declaration)
					{
						// replace ending ? with / so that 'element' terminates properly
						*s = '/';

// we exit from this function with cursor at node_declaration, which is a signal to parse() to go to LOC_ATTRIBUTES
						s = value;
					}
					else
					{
						// store value and step over >
						cursor->value = value;

PUGI__POPNODE();

PUGI__ENDSEG();

s += (*s == '>');
					}
				}
				else PUGI__THROW_ERROR(status_bad_pi, s);
			}
			else
			{
				// scan for tag end
				PUGI__SCANFOR(s[0] == '?' && PUGI__ENDSWITH(s[1], '>'));
				PUGI__CHECK_ERROR(status_bad_pi, s);

s += (s[1] == '>' ? 2 : 1);
			}

// store from registers
			ref_cursor = cursor;

return s;
		}

char_t* parse_tree(char_t* s, xml_node_struct* root, unsigned int optmsk, char_t endch)
		{
			strconv_attribute_t strconv_attribute = get_strconv_attribute(optmsk);
			strconv_pcdata_t strconv_pcdata = get_strconv_pcdata(optmsk);

char_t ch = 0;
			xml_node_struct* cursor = root;
			char_t* mark = s;

while (*s != 0)
			{
				if (*s == '<')
				{
					++s;

LOC_TAG:
					if (PUGI__IS_CHARTYPE(*s, ct_start_symbol)) // '<#...'
					{
						PUGI__PUSHNODE(node_element); // Append a new node to the tree.

cursor->name = s;

PUGI__SCANWHILE_UNROLL(PUGI__IS_CHARTYPE(ss, ct_symbol)); // Scan for a terminator.
						PUGI__ENDSEG(); // Save char in 'ch', terminate & step over.

if (ch == '>')
						{
							// end of tag
						}
						else if (PUGI__IS_CHARTYPE(ch, ct_space))
						{
						LOC_ATTRIBUTES:
							while (true)
							{
								PUGI__SKIPWS(); // Eat any whitespace.

if (PUGI__IS_CHARTYPE(*s, ct_start_symbol)) // <... #...
								{
									xml_attribute_struct* a = append_new_attribute(cursor, *alloc); // Make space for this attribute.
									if (!a) PUGI__THROW_ERROR(status_out_of_memory, s);

a->name = s; // Save the offset.

PUGI__SCANWHILE_UNROLL(PUGI__IS_CHARTYPE(ss, ct_symbol)); // Scan for a terminator.
									PUGI__ENDSEG(); // Save char in 'ch', terminate & step over.

if (PUGI__IS_CHARTYPE(ch, ct_space))
									{
										PUGI__SKIPWS(); // Eat any whitespace.

ch = *s;
										++s;
									}

if (ch == '=') // '<... #=...'
									{
										PUGI__SKIPWS(); // Eat any whitespace.

if (*s == '"' || *s == '\'') // '<... #="...'
										{
											ch = *s; // Save quote char to avoid breaking on "''" -or- '""'.
											++s; // Step over the quote.
											a->value = s; // Save the offset.

s = strconv_attribute(s, ch);

if (!s) PUGI__THROW_ERROR(status_bad_attribute, a->value);

// After this line the loop continues from the start;
											// Whitespaces, / and > are ok, symbols and EOF are wrong,
											// everything else will be detected
											if (PUGI__IS_CHARTYPE(*s, ct_start_symbol)) PUGI__THROW_ERROR(status_bad_attribute, s);
										}
										else PUGI__THROW_ERROR(status_bad_attribute, s);
									}
									else PUGI__THROW_ERROR(status_bad_attribute, s);
								}
								else if (*s == '/')
								{
									++s;

if (*s == '>')
									{
										PUGI__POPNODE();
										s++;
										break;
									}
									else if (*s == 0 && endch == '>')
									{
										PUGI__POPNODE();
										break;
									}
									else PUGI__THROW_ERROR(status_bad_start_element, s);
								}
								else if (*s == '>')
								{
									++s;

break;
								}
								else if (*s == 0 && endch == '>')
								{
									break;
								}
								else PUGI__THROW_ERROR(status_bad_start_element, s);
							}

// !!!
						}
						else if (ch == '/') // '<#.../'
						{
							if (!PUGI__ENDSWITH(*s, '>')) PUGI__THROW_ERROR(status_bad_start_element, s);

PUGI__POPNODE(); // Pop.

s += (*s == '>');
						}
						else if (ch == 0)
						{
							// we stepped over null terminator, backtrack & handle closing tag
							--s;

if (endch != '>') PUGI__THROW_ERROR(status_bad_start_element, s);
						}
						else PUGI__THROW_ERROR(status_bad_start_element, s);
					}
					else if (*s == '/')
					{
						++s;

mark = s;

char_t* name = cursor->name;
						if (!name) PUGI__THROW_ERROR(status_end_element_mismatch, mark);

while (PUGI__IS_CHARTYPE(*s, ct_symbol))
						{
							if (*s++ != *name++) PUGI__THROW_ERROR(status_end_element_mismatch, mark);
						}

if (*name)
						{
							if (*s == 0 && name[0] == endch && name[1] == 0) PUGI__THROW_ERROR(status_bad_end_element, s);
							else PUGI__THROW_ERROR(status_end_element_mismatch, mark);
						}

PUGI__POPNODE(); // Pop.

PUGI__SKIPWS();

if (*s == 0)
						{
							if (endch != '>') PUGI__THROW_ERROR(status_bad_end_element, s);
						}
						else
						{
							if (*s != '>') PUGI__THROW_ERROR(status_bad_end_element, s);
							++s;
						}
					}
					else if (*s == '?') // '<?...'
					{
						s = parse_question(s, cursor, optmsk, endch);
						if (!s) return s;

assert(cursor);
						if (PUGI__NODETYPE(cursor) == node_declaration) goto LOC_ATTRIBUTES;
					}
					else if (*s == '!') // '<!...'
					{
						s = parse_exclamation(s, cursor, optmsk, endch);
						if (!s) return s;
					}
					else if (*s == 0 && endch == '?') PUGI__THROW_ERROR(status_bad_pi, s);
					else PUGI__THROW_ERROR(status_unrecognized_tag, s);
				}
				else
				{
					mark = s; // Save this offset while searching for a terminator.

PUGI__SKIPWS(); // Eat whitespace if no genuine PCDATA here.

if (*s == '<' || !*s)
					{
						// We skipped some whitespace characters because otherwise we would take the tag branch instead of PCDATA one
						assert(mark != s);

if (!PUGI__OPTSET(parse_ws_pcdata | parse_ws_pcdata_single) || PUGI__OPTSET(parse_trim_pcdata))
						{
							continue;
						}
						else if (PUGI__OPTSET(parse_ws_pcdata_single))
						{
							if (s[0] != '<' || s[1] != '/' || cursor->first_child) continue;
						}
					}

if (!PUGI__OPTSET(parse_trim_pcdata))
						s = mark;

if (cursor->parent || PUGI__OPTSET(parse_fragment))
					{
						if (PUGI__OPTSET(parse_embed_pcdata) && cursor->parent && !cursor->first_child && !cursor->value)
						{
							cursor->value = s; // Save the offset.
						}
						else
						{
							PUGI__PUSHNODE(node_pcdata); // Append a new node on the tree.

cursor->value = s; // Save the offset.

PUGI__POPNODE(); // Pop since this is a standalone.
						}

s = strconv_pcdata(s);

if (!*s) break;
					}
					else
					{
						PUGI__SCANFOR(*s == '<'); // '...<'
						if (!*s) break;

++s;
					}

// We're after '<'
					goto LOC_TAG;
				}
			}

// check that last tag is closed
			if (cursor != root) PUGI__THROW_ERROR(status_end_element_mismatch, s);

return s;
		}

#ifdef PUGIXML_WCHAR_MODE
		static char_t* parse_skip_bom(char_t* s)
		{
			unsigned int bom = 0xfeff;
			return (s[0] == static_cast<wchar_t>(bom)) ? s + 1 : s;
		}
	#else
		static char_t* parse_skip_bom(char_t* s)
		{
			return (s[0] == '\xef' && s[1] == '\xbb' && s[2] == '\xbf') ? s + 3 : s;
		}
	#endif

static bool has_element_node_siblings(xml_node_struct* node)
		{
			while (node)
			{
				if (PUGI__NODETYPE(node) == node_element) return true;

node = node->next_sibling;
			}

return false;
		}

static xml_parse_result parse(char_t* buffer, size_t length, xml_document_struct* xmldoc, xml_node_struct* root, unsigned int optmsk)
		{
			// early-out for empty documents
			if (length == 0)
				return make_parse_result(PUGI__OPTSET(parse_fragment) ? status_ok : status_no_document_element);

// get last child of the root before parsing
			xml_node_struct* last_root_child = root->first_child ? root->first_child->prev_sibling_c + 0 : 0;

// create parser on stack
			xml_parser parser(static_cast<xml_allocator*>(xmldoc));

// save last character and make buffer zero-terminated (speeds up parsing)
			char_t endch = buffer[length - 1];
			buffer[length - 1] = 0;

// skip BOM to make sure it does not end up as part of parse output
			char_t* buffer_data = parse_skip_bom(buffer);

// perform actual parsing
			parser.parse_tree(buffer_data, root, optmsk, endch);

xml_parse_result result = make_parse_result(parser.error_status, parser.error_offset ? parser.error_offset - buffer : 0);
			assert(result.offset >= 0 && static_cast<size_t>(result.offset) <= length);

if (result)
			{
				// since we removed last character, we have to handle the only possible false positive (stray <)
				if (endch == '<')
					return make_parse_result(status_unrecognized_tag, length - 1);

// check if there are any element nodes parsed
				xml_node_struct* first_root_child_parsed = last_root_child ? last_root_child->next_sibling + 0 : root->first_child+ 0;

if (!PUGI__OPTSET(parse_fragment) && !has_element_node_siblings(first_root_child_parsed))
					return make_parse_result(status_no_document_element, length - 1);
			}
			else
			{
				// roll back offset if it occurs on a null terminator in the source buffer
				if (result.offset > 0 && static_cast<size_t>(result.offset) == length - 1 && endch == 0)
					result.offset--;
			}

return result;
		}
	};

// Output facilities
	PUGI__FN xml_encoding get_write_native_encoding()
	{
	#ifdef PUGIXML_WCHAR_MODE
		return get_wchar_encoding();
	#else
		return encoding_utf8;
	#endif
	}

PUGI__FN xml_encoding get_write_encoding(xml_encoding encoding)
	{
		// replace wchar encoding with utf implementation
		if (encoding == encoding_wchar) return get_wchar_encoding();

// replace utf16 encoding with utf16 with specific endianness
		if (encoding == encoding_utf16) return is_little_endian() ? encoding_utf16_le : encoding_utf16_be;

// replace utf32 encoding with utf32 with specific endianness
		if (encoding == encoding_utf32) return is_little_endian() ? encoding_utf32_le : encoding_utf32_be;

// only do autodetection if no explicit encoding is requested
		if (encoding != encoding_auto) return encoding;

// assume utf8 encoding
		return encoding_utf8;
	}

template <typename D, typename T> PUGI__FN size_t convert_buffer_output_generic(typename T::value_type dest, const char_t* data, size_t length, D, T)
	{
		PUGI__STATIC_ASSERT(sizeof(char_t) == sizeof(typename D::type));

typename T::value_type end = D::process(reinterpret_cast<const typename D::type*>(data), length, dest, T());

return static_cast<size_t>(end - dest) * sizeof(*dest);
	}

template <typename D, typename T> PUGI__FN size_t convert_buffer_output_generic(typename T::value_type dest, const char_t* data, size_t length, D, T, bool opt_swap)
	{
		PUGI__STATIC_ASSERT(sizeof(char_t) == sizeof(typename D::type));

typename T::value_type end = D::process(reinterpret_cast<const typename D::type*>(data), length, dest, T());

if (opt_swap)
		{
			for (typename T::value_type i = dest; i != end; ++i)
				*i = endian_swap(*i);
		}

return static_cast<size_t>(end - dest) * sizeof(*dest);
	}

#ifdef PUGIXML_WCHAR_MODE
	PUGI__FN size_t get_valid_length(const char_t* data, size_t length)
	{
		if (length < 1) return 0;

// discard last character if it's the lead of a surrogate pair
		return (sizeof(wchar_t) == 2 && static_cast<unsigned int>(static_cast<uint16_t>(data[length - 1]) - 0xD800) < 0x400) ? length - 1 : length;
	}

PUGI__FN size_t convert_buffer_output(char_t* r_char, uint8_t* r_u8, uint16_t* r_u16, uint32_t* r_u32, const char_t* data, size_t length, xml_encoding encoding)
	{
		// only endian-swapping is required
		if (need_endian_swap_utf(encoding, get_wchar_encoding()))
		{
			convert_wchar_endian_swap(r_char, data, length);

return length * sizeof(char_t);
		}

// convert to utf8
		if (encoding == encoding_utf8)
			return convert_buffer_output_generic(r_u8, data, length, wchar_decoder(), utf8_writer());

// convert to utf16
		if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;

return convert_buffer_output_generic(r_u16, data, length, wchar_decoder(), utf16_writer(), native_encoding != encoding);
		}

// convert to utf32
		if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;

return convert_buffer_output_generic(r_u32, data, length, wchar_decoder(), utf32_writer(), native_encoding != encoding);
		}

// convert to latin1
		if (encoding == encoding_latin1)
			return convert_buffer_output_generic(r_u8, data, length, wchar_decoder(), latin1_writer());

assert(false && "Invalid encoding");
		return 0;
	}
#else
	PUGI__FN size_t get_valid_length(const char_t* data, size_t length)
	{
		if (length < 5) return 0;

for (size_t i = 1; i <= 4; ++i)
		{
			uint8_t ch = static_cast<uint8_t>(data[length - i]);

// either a standalone character or a leading one
			if ((ch & 0xc0) != 0x80) return length - i;
		}

// there are four non-leading characters at the end, sequence tail is broken so might as well process the whole chunk
		return length;
	}

PUGI__FN size_t convert_buffer_output(char_t* /* r_char */, uint8_t* r_u8, uint16_t* r_u16, uint32_t* r_u32, const char_t* data, size_t length, xml_encoding encoding)
	{
		if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;

return convert_buffer_output_generic(r_u16, data, length, utf8_decoder(), utf16_writer(), native_encoding != encoding);
		}

if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;

return convert_buffer_output_generic(r_u32, data, length, utf8_decoder(), utf32_writer(), native_encoding != encoding);
		}

if (encoding == encoding_latin1)
			return convert_buffer_output_generic(r_u8, data, length, utf8_decoder(), latin1_writer());

assert(false && "Invalid encoding");
		return 0;
	}
#endif

class xml_buffered_writer
	{
		xml_buffered_writer(const xml_buffered_writer&);
		xml_buffered_writer& operator=(const xml_buffered_writer&);

public:
		xml_buffered_writer(xml_writer& writer_, xml_encoding user_encoding): writer(writer_), bufsize(0), encoding(get_write_encoding(user_encoding))
		{
			PUGI__STATIC_ASSERT(bufcapacity >= 8);
		}

size_t flush()
		{
			flush(buffer, bufsize);
			bufsize = 0;
			return 0;
		}

void flush(const char_t* data, size_t size)
		{
			if (size == 0) return;

// fast path, just write data
			if (encoding == get_write_native_encoding())
				writer.write(data, size * sizeof(char_t));
			else
			{
				// convert chunk
				size_t result = convert_buffer_output(scratch.data_char, scratch.data_u8, scratch.data_u16, scratch.data_u32, data, size, encoding);
				assert(result <= sizeof(scratch));

// write data
				writer.write(scratch.data_u8, result);
			}
		}

void write_direct(const char_t* data, size_t length)
		{
			// flush the remaining buffer contents
			flush();

// handle large chunks
			if (length > bufcapacity)
			{
				if (encoding == get_write_native_encoding())
				{
					// fast path, can just write data chunk
					writer.write(data, length * sizeof(char_t));
					return;
				}

// need to convert in suitable chunks
				while (length > bufcapacity)
				{
					// get chunk size by selecting such number of characters that are guaranteed to fit into scratch buffer
					// and form a complete codepoint sequence (i.e. discard start of last codepoint if necessary)
					size_t chunk_size = get_valid_length(data, bufcapacity);
					assert(chunk_size);

// convert chunk and write
					flush(data, chunk_size);

// iterate
					data += chunk_size;
					length -= chunk_size;
				}

// small tail is copied below
				bufsize = 0;
			}

memcpy(buffer + bufsize, data, length * sizeof(char_t));
			bufsize += length;
		}

void write_buffer(const char_t* data, size_t length)
		{
			size_t offset = bufsize;

if (offset + length <= bufcapacity)
			{
				memcpy(buffer + offset, data, length * sizeof(char_t));
				bufsize = offset + length;
			}
			else
			{
				write_direct(data, length);
			}
		}

void write_string(const char_t* data)
		{
			// write the part of the string that fits in the buffer
			size_t offset = bufsize;

while (*data && offset < bufcapacity)
				buffer[offset++] = *data++;

// write the rest
			if (offset < bufcapacity)
			{
				bufsize = offset;
			}
			else
			{
				// backtrack a bit if we have split the codepoint
				size_t length = offset - bufsize;
				size_t extra = length - get_valid_length(data - length, length);

bufsize = offset - extra;

write_direct(data - extra, strlength(data) + extra);
			}
		}

void write(char_t d0)
		{
			size_t offset = bufsize;
			if (offset > bufcapacity - 1) offset = flush();

buffer[offset + 0] = d0;
			bufsize = offset + 1;
		}

void write(char_t d0, char_t d1)
		{
			size_t offset = bufsize;
			if (offset > bufcapacity - 2) offset = flush();

buffer[offset + 0] = d0;
			buffer[offset + 1] = d1;
			bufsize = offset + 2;
		}

void write(char_t d0, char_t d1, char_t d2)
		{
			size_t offset = bufsize;
			if (offset > bufcapacity - 3) offset = flush();

buffer[offset + 0] = d0;
			buffer[offset + 1] = d1;
			buffer[offset + 2] = d2;
			bufsize = offset + 3;
		}

void write(char_t d0, char_t d1, char_t d2, char_t d3)
		{
			size_t offset = bufsize;
			if (offset > bufcapacity - 4) offset = flush();

buffer[offset + 0] = d0;
			buffer[offset + 1] = d1;
			buffer[offset + 2] = d2;
			buffer[offset + 3] = d3;
			bufsize = offset + 4;
		}

void write(char_t d0, char_t d1, char_t d2, char_t d3, char_t d4)
		{
			size_t offset = bufsize;
			if (offset > bufcapacity - 5) offset = flush();

buffer[offset + 0] = d0;
			buffer[offset + 1] = d1;
			buffer[offset + 2] = d2;
			buffer[offset + 3] = d3;
			buffer[offset + 4] = d4;
			bufsize = offset + 5;
		}

void write(char_t d0, char_t d1, char_t d2, char_t d3, char_t d4, char_t d5)
		{
			size_t offset = bufsize;
			if (offset > bufcapacity - 6) offset = flush();

buffer[offset + 0] = d0;
			buffer[offset + 1] = d1;
			buffer[offset + 2] = d2;
			buffer[offset + 3] = d3;
			buffer[offset + 4] = d4;
			buffer[offset + 5] = d5;
			bufsize = offset + 6;
		}

// utf8 maximum expansion: x4 (-> utf32)
		// utf16 maximum expansion: x2 (-> utf32)
		// utf32 maximum expansion: x1
		enum
		{
			bufcapacitybytes =
			#ifdef PUGIXML_MEMORY_OUTPUT_STACK
				PUGIXML_MEMORY_OUTPUT_STACK
			#else
				10240
			#endif
			,
			bufcapacity = bufcapacitybytes / (sizeof(char_t) + 4)
		};

char_t buffer[bufcapacity];

union
		{
			uint8_t data_u8[4 * bufcapacity];
			uint16_t data_u16[2 * bufcapacity];
			uint32_t data_u32[bufcapacity];
			char_t data_char[bufcapacity];
		} scratch;

xml_writer& writer;
		size_t bufsize;
		xml_encoding encoding;
	};

PUGI__FN void text_output_escaped(xml_buffered_writer& writer, const char_t* s, chartypex_t type)
	{
		while (*s)
		{
			const char_t* prev = s;

// While *s is a usual symbol
			PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPEX(ss, type));

writer.write_buffer(prev, static_cast<size_t>(s - prev));

switch (*s)
			{
				case 0: break;
				case '&':
					writer.write('&', 'a', 'm', 'p', ';');
					++s;
					break;
				case '<':
					writer.write('&', 'l', 't', ';');
					++s;
					break;
				case '>':
					writer.write('&', 'g', 't', ';');
					++s;
					break;
				case '"':
					writer.write('&', 'q', 'u', 'o', 't', ';');
					++s;
					break;
				default: // s is not a usual symbol
				{
					unsigned int ch = static_cast<unsigned int>(*s++);
					assert(ch < 32);

writer.write('&', '#', static_cast<char_t>((ch / 10) + '0'), static_cast<char_t>((ch % 10) + '0'), ';');
				}
			}
		}
	}

PUGI__FN void text_output(xml_buffered_writer& writer, const char_t* s, chartypex_t type, unsigned int flags)
	{
		if (flags & format_no_escapes)
			writer.write_string(s);
		else
			text_output_escaped(writer, s, type);
	}

PUGI__FN void text_output_cdata(xml_buffered_writer& writer, const char_t* s)
	{
		do
		{
			writer.write('<', '!', '[', 'C', 'D');
			writer.write('A', 'T', 'A', '[');

const char_t* prev = s;

// look for ]]> sequence - we can't output it as is since it terminates CDATA
			while (*s && !(s[0] == ']' && s[1] == ']' && s[2] == '>')) ++s;

// skip ]] if we stopped at ]]>, > will go to the next CDATA section
			if (*s) s += 2;

writer.write_buffer(prev, static_cast<size_t>(s - prev));

writer.write(']', ']', '>');
		}
		while (*s);
	}

PUGI__FN void text_output_indent(xml_buffered_writer& writer, const char_t* indent, size_t indent_length, unsigned int depth)
	{
		switch (indent_length)
		{
		case 1:
		{
			for (unsigned int i = 0; i < depth; ++i)
				writer.write(indent[0]);
			break;
		}

case 2:
		{
			for (unsigned int i = 0; i < depth; ++i)
				writer.write(indent[0], indent[1]);
			break;
		}

case 3:
		{
			for (unsigned int i = 0; i < depth; ++i)
				writer.write(indent[0], indent[1], indent[2]);
			break;
		}

case 4:
		{
			for (unsigned int i = 0; i < depth; ++i)
				writer.write(indent[0], indent[1], indent[2], indent[3]);
			break;
		}

default:
		{
			for (unsigned int i = 0; i < depth; ++i)
				writer.write_buffer(indent, indent_length);
		}
		}
	}

PUGI__FN void node_output_comment(xml_buffered_writer& writer, const char_t* s)
	{
		writer.write('<', '!', '-', '-');

while (*s)
		{
			const char_t* prev = s;

// look for -\0 or -- sequence - we can't output it since -- is illegal in comment body
			while (*s && !(s[0] == '-' && (s[1] == '-' || s[1] == 0))) ++s;

writer.write_buffer(prev, static_cast<size_t>(s - prev));

if (*s)
			{
				assert(*s == '-');

writer.write('-', ' ');
				++s;
			}
		}

writer.write('-', '-', '>');
	}

PUGI__FN void node_output_pi_value(xml_buffered_writer& writer, const char_t* s)
	{
		while (*s)
		{
			const char_t* prev = s;

// look for ?> sequence - we can't output it since ?> terminates PI
			while (*s && !(s[0] == '?' && s[1] == '>')) ++s;

writer.write_buffer(prev, static_cast<size_t>(s - prev));

if (*s)
			{
				assert(s[0] == '?' && s[1] == '>');

writer.write('?', ' ', '>');
				s += 2;
			}
		}
	}

PUGI__FN void node_output_attributes(xml_buffered_writer& writer, xml_node_struct* node, const char_t* indent, size_t indent_length, unsigned int flags, unsigned int depth)
	{
		const char_t* default_name = PUGIXML_TEXT(":anonymous");

for (xml_attribute_struct* a = node->first_attribute; a; a = a->next_attribute)
		{
			if ((flags & (format_indent_attributes | format_raw)) == format_indent_attributes)
			{
				writer.write('\n');

text_output_indent(writer, indent, indent_length, depth + 1);
			}
			else
			{
				writer.write(' ');
			}

writer.write_string(a->name ? a->name + 0 : default_name);
			writer.write('=', '"');

if (a->value)
				text_output(writer, a->value, ctx_special_attr, flags);

writer.write('"');
		}
	}

PUGI__FN bool node_output_start(xml_buffered_writer& writer, xml_node_struct* node, const char_t* indent, size_t indent_length, unsigned int flags, unsigned int depth)
	{
		const char_t* default_name = PUGIXML_TEXT(":anonymous");
		const char_t* name = node->name ? node->name + 0 : default_name;

writer.write('<');
		writer.write_string(name);

if (node->first_attribute)
			node_output_attributes(writer, node, indent, indent_length, flags, depth);

// element nodes can have value if parse_embed_pcdata was used
		if (!node->value)
		{
			if (!node->first_child)
			{
				if (flags & format_no_empty_element_tags)
				{
					writer.write('>', '<', '/');
					writer.write_string(name);
					writer.write('>');

return false;
				}
				else
				{
					if ((flags & format_raw) == 0)
						writer.write(' ');

writer.write('/', '>');

return false;
				}
			}
			else
			{
				writer.write('>');

return true;
			}
		}
		else
		{
			writer.write('>');

text_output(writer, node->value, ctx_special_pcdata, flags);

if (!node->first_child)
			{
				writer.write('<', '/');
				writer.write_string(name);
				writer.write('>');

return false;
			}
			else
			{
				return true;
			}
		}
	}

PUGI__FN void node_output_end(xml_buffered_writer& writer, xml_node_struct* node)
	{
		const char_t* default_name = PUGIXML_TEXT(":anonymous");
		const char_t* name = node->name ? node->name + 0 : default_name;

writer.write('<', '/');
		writer.write_string(name);
		writer.write('>');
	}

PUGI__FN void node_output_simple(xml_buffered_writer& writer, xml_node_struct* node, unsigned int flags)
	{
		const char_t* default_name = PUGIXML_TEXT(":anonymous");

switch (PUGI__NODETYPE(node))
		{
			case node_pcdata:
				text_output(writer, node->value ? node->value + 0 : PUGIXML_TEXT(""), ctx_special_pcdata, flags);
				break;

case node_cdata:
				text_output_cdata(writer, node->value ? node->value + 0 : PUGIXML_TEXT(""));
				break;

case node_comment:
				node_output_comment(writer, node->value ? node->value + 0 : PUGIXML_TEXT(""));
				break;

case node_pi:
				writer.write('<', '?');
				writer.write_string(node->name ? node->name + 0 : default_name);

if (node->value)
				{
					writer.write(' ');
					node_output_pi_value(writer, node->value);
				}

writer.write('?', '>');
				break;

case node_declaration:
				writer.write('<', '?');
				writer.write_string(node->name ? node->name + 0 : default_name);
				node_output_attributes(writer, node, PUGIXML_TEXT(""), 0, flags | format_raw, 0);
				writer.write('?', '>');
				break;

case node_doctype:
				writer.write('<', '!', 'D', 'O', 'C');
				writer.write('T', 'Y', 'P', 'E');

if (node->value)
				{
					writer.write(' ');
					writer.write_string(node->value);
				}

writer.write('>');
				break;

default:
				assert(false && "Invalid node type");
		}
	}

enum indent_flags_t
	{
		indent_newline = 1,
		indent_indent = 2
	};

PUGI__FN void node_output(xml_buffered_writer& writer, xml_node_struct* root, const char_t* indent, unsigned int flags, unsigned int depth)
	{
		size_t indent_length = ((flags & (format_indent | format_indent_attributes)) && (flags & format_raw) == 0) ? strlength(indent) : 0;
		unsigned int indent_flags = indent_indent;

xml_node_struct* node = root;

do
		{
			assert(node);

// begin writing current node
			if (PUGI__NODETYPE(node) == node_pcdata || PUGI__NODETYPE(node) == node_cdata)
			{
				node_output_simple(writer, node, flags);

indent_flags = 0;
			}
			else
			{
				if ((indent_flags & indent_newline) && (flags & format_raw) == 0)
					writer.write('\n');

if ((indent_flags & indent_indent) && indent_length)
					text_output_indent(writer, indent, indent_length, depth);

if (PUGI__NODETYPE(node) == node_element)
				{
					indent_flags = indent_newline | indent_indent;

if (node_output_start(writer, node, indent, indent_length, flags, depth))
					{
						// element nodes can have value if parse_embed_pcdata was used
						if (node->value)
							indent_flags = 0;

node = node->first_child;
						depth++;
						continue;
					}
				}
				else if (PUGI__NODETYPE(node) == node_document)
				{
					indent_flags = indent_indent;

if (node->first_child)
					{
						node = node->first_child;
						continue;
					}
				}
				else
				{
					node_output_simple(writer, node, flags);

indent_flags = indent_newline | indent_indent;
				}
			}

// continue to the next node
			while (node != root)
			{
				if (node->next_sibling)
				{
					node = node->next_sibling;
					break;
				}

node = node->parent;

// write closing node
				if (PUGI__NODETYPE(node) == node_element)
				{
					depth--;

if ((indent_flags & indent_newline) && (flags & format_raw) == 0)
						writer.write('\n');

if ((indent_flags & indent_indent) && indent_length)
						text_output_indent(writer, indent, indent_length, depth);

node_output_end(writer, node);

indent_flags = indent_newline | indent_indent;
				}
			}
		}
		while (node != root);

if ((indent_flags & indent_newline) && (flags & format_raw) == 0)
			writer.write('\n');
	}

PUGI__FN bool has_declaration(xml_node_struct* node)
	{
		for (xml_node_struct* child = node->first_child; child; child = child->next_sibling)
		{
			xml_node_type type = PUGI__NODETYPE(child);

if (type == node_declaration) return true;
			if (type == node_element) return false;
		}

return false;
	}

PUGI__FN bool is_attribute_of(xml_attribute_struct* attr, xml_node_struct* node)
	{
		for (xml_attribute_struct* a = node->first_attribute; a; a = a->next_attribute)
			if (a == attr)
				return true;

return false;
	}

PUGI__FN bool allow_insert_attribute(xml_node_type parent)
	{
		return parent == node_element || parent == node_declaration;
	}

PUGI__FN bool allow_insert_child(xml_node_type parent, xml_node_type child)
	{
		if (parent != node_document && parent != node_element) return false;
		if (child == node_document || child == node_null) return false;
		if (parent != node_document && (child == node_declaration || child == node_doctype)) return false;

return true;
	}

PUGI__FN bool allow_move(xml_node parent, xml_node child)
	{
		// check that child can be a child of parent
		if (!allow_insert_child(parent.type(), child.type()))
			return false;

// check that node is not moved between documents
		if (parent.root() != child.root())
			return false;

// check that new parent is not in the child subtree
		xml_node cur = parent;

while (cur)
		{
			if (cur == child)
				return false;

cur = cur.parent();
		}

return true;
	}

template <typename String, typename Header>
	PUGI__FN void node_copy_string(String& dest, Header& header, uintptr_t header_mask, char_t* source, Header& source_header, xml_allocator* alloc)
	{
		assert(!dest && (header & header_mask) == 0);

if (source)
		{
			if (alloc && (source_header & header_mask) == 0)
			{
				dest = source;

// since strcpy_insitu can reuse document buffer memory we need to mark both source and dest as shared
				header |= xml_memory_page_contents_shared_mask;
				source_header |= xml_memory_page_contents_shared_mask;
			}
			else
				strcpy_insitu(dest, header, header_mask, source, strlength(source));
		}
	}

PUGI__FN void node_copy_contents(xml_node_struct* dn, xml_node_struct* sn, xml_allocator* shared_alloc)
	{
		node_copy_string(dn->name, dn->header, xml_memory_page_name_allocated_mask, sn->name, sn->header, shared_alloc);
		node_copy_string(dn->value, dn->header, xml_memory_page_value_allocated_mask, sn->value, sn->header, shared_alloc);

for (xml_attribute_struct* sa = sn->first_attribute; sa; sa = sa->next_attribute)
		{
			xml_attribute_struct* da = append_new_attribute(dn, get_allocator(dn));

if (da)
			{
				node_copy_string(da->name, da->header, xml_memory_page_name_allocated_mask, sa->name, sa->header, shared_alloc);
				node_copy_string(da->value, da->header, xml_memory_page_value_allocated_mask, sa->value, sa->header, shared_alloc);
			}
		}
	}

PUGI__FN void node_copy_tree(xml_node_struct* dn, xml_node_struct* sn)
	{
		xml_allocator& alloc = get_allocator(dn);
		xml_allocator* shared_alloc = (&alloc == &get_allocator(sn)) ? &alloc : 0;

node_copy_contents(dn, sn, shared_alloc);

xml_node_struct* dit = dn;
		xml_node_struct* sit = sn->first_child;

while (sit && sit != sn)
		{
			if (sit != dn)
			{
				xml_node_struct* copy = append_new_node(dit, alloc, PUGI__NODETYPE(sit));

if (copy)
				{
					node_copy_contents(copy, sit, shared_alloc);

if (sit->first_child)
					{
						dit = copy;
						sit = sit->first_child;
						continue;
					}
				}
			}

// continue to the next node
			do
			{
				if (sit->next_sibling)
				{
					sit = sit->next_sibling;
					break;
				}

sit = sit->parent;
				dit = dit->parent;
			}
			while (sit != sn);
		}
	}

PUGI__FN void node_copy_attribute(xml_attribute_struct* da, xml_attribute_struct* sa)
	{
		xml_allocator& alloc = get_allocator(da);
		xml_allocator* shared_alloc = (&alloc == &get_allocator(sa)) ? &alloc : 0;

node_copy_string(da->name, da->header, xml_memory_page_name_allocated_mask, sa->name, sa->header, shared_alloc);
		node_copy_string(da->value, da->header, xml_memory_page_value_allocated_mask, sa->value, sa->header, shared_alloc);
	}

inline bool is_text_node(xml_node_struct* node)
	{
		xml_node_type type = PUGI__NODETYPE(node);

return type == node_pcdata || type == node_cdata;
	}

// get value with conversion functions
	template <typename U> U string_to_integer(const char_t* value, U minneg, U maxpos)
	{
		U result = 0;
		const char_t* s = value;

while (PUGI__IS_CHARTYPE(*s, ct_space))
			s++;

bool negative = (*s == '-');

s += (*s == '+' || *s == '-');

bool overflow = false;

if (s[0] == '0' && (s[1] | ' ') == 'x')
		{
			s += 2;

// since overflow detection relies on length of the sequence skip leading zeros
			while (*s == '0')
				s++;

const char_t* start = s;

for (;;)
			{
				if (static_cast<unsigned>(*s - '0') < 10)
					result = result * 16 + (*s - '0');
				else if (static_cast<unsigned>((*s | ' ') - 'a') < 6)
					result = result * 16 + ((*s | ' ') - 'a' + 10);
				else
					break;

s++;
			}

size_t digits = static_cast<size_t>(s - start);

overflow = digits > sizeof(U) * 2;
		}
		else
		{
			// since overflow detection relies on length of the sequence skip leading zeros
			while (*s == '0')
				s++;

const char_t* start = s;

for (;;)
			{
				if (static_cast<unsigned>(*s - '0') < 10)
					result = result * 10 + (*s - '0');
				else
					break;

s++;
			}

size_t digits = static_cast<size_t>(s - start);

PUGI__STATIC_ASSERT(sizeof(U) == 8 || sizeof(U) == 4 || sizeof(U) == 2);

const size_t max_digits10 = sizeof(U) == 8 ? 20 : sizeof(U) == 4 ? 10 : 5;
			const char_t max_lead = sizeof(U) == 8 ? '1' : sizeof(U) == 4 ? '4' : '6';
			const size_t high_bit = sizeof(U) * 8 - 1;

overflow = digits >= max_digits10 && !(digits == max_digits10 && (*start < max_lead || (*start == max_lead && result >> high_bit)));
		}

if (negative)
			return (overflow || result > minneg) ? 0 - minneg : 0 - result;
		else
			return (overflow || result > maxpos) ? maxpos : result;
	}

PUGI__FN int get_value_int(const char_t* value)
	{
		return string_to_integer<unsigned int>(value, 0 - static_cast<unsigned int>(INT_MIN), INT_MAX);
	}

PUGI__FN unsigned int get_value_uint(const char_t* value)
	{
		return string_to_integer<unsigned int>(value, 0, UINT_MAX);
	}

PUGI__FN double get_value_double(const char_t* value)
	{
	#ifdef PUGIXML_WCHAR_MODE
		return wcstod(value, 0);
	#else
		return strtod(value, 0);
	#endif
	}

PUGI__FN float get_value_float(const char_t* value)
	{
	#ifdef PUGIXML_WCHAR_MODE
		return static_cast<float>(wcstod(value, 0));
	#else
		return static_cast<float>(strtod(value, 0));
	#endif
	}

PUGI__FN bool get_value_bool(const char_t* value)
	{
		// only look at first char
		char_t first = *value;

// 1*, t* (true), T* (True), y* (yes), Y* (YES)
		return (first == '1' || first == 't' || first == 'T' || first == 'y' || first == 'Y');
	}

#ifdef PUGIXML_HAS_LONG_LONG
	PUGI__FN long long get_value_llong(const char_t* value)
	{
		return string_to_integer<unsigned long long>(value, 0 - static_cast<unsigned long long>(LLONG_MIN), LLONG_MAX);
	}

PUGI__FN unsigned long long get_value_ullong(const char_t* value)
	{
		return string_to_integer<unsigned long long>(value, 0, ULLONG_MAX);
	}
#endif

template <typename U> PUGI__FN char_t* integer_to_string(char_t* begin, char_t* end, U value, bool negative)
	{
		char_t* result = end - 1;
		U rest = negative ? 0 - value : value;

do
		{
			*result-- = static_cast<char_t>('0' + (rest % 10));
			rest /= 10;
		}
		while (rest);

assert(result >= begin);
		(void)begin;

*result = '-';

return result + !negative;
	}

// set value with conversion functions
	template <typename String, typename Header>
	PUGI__FN bool set_value_ascii(String& dest, Header& header, uintptr_t header_mask, char* buf)
	{
	#ifdef PUGIXML_WCHAR_MODE
		char_t wbuf[128];
		assert(strlen(buf) < sizeof(wbuf) / sizeof(wbuf[0]));

size_t offset = 0;
		for (; buf[offset]; ++offset) wbuf[offset] = buf[offset];

return strcpy_insitu(dest, header, header_mask, wbuf, offset);
	#else
		return strcpy_insitu(dest, header, header_mask, buf, strlen(buf));
	#endif
	}

template <typename U, typename String, typename Header>
	PUGI__FN bool set_value_integer(String& dest, Header& header, uintptr_t header_mask, U value, bool negative)
	{
		char_t buf[64];
		char_t* end = buf + sizeof(buf) / sizeof(buf[0]);
		char_t* begin = integer_to_string(buf, end, value, negative);

return strcpy_insitu(dest, header, header_mask, begin, end - begin);
	}

template <typename String, typename Header>
	PUGI__FN bool set_value_convert(String& dest, Header& header, uintptr_t header_mask, float value)
	{
		char buf[128];
		sprintf(buf, "%.9g", value);

return set_value_ascii(dest, header, header_mask, buf);
	}

template <typename String, typename Header>
	PUGI__FN bool set_value_convert(String& dest, Header& header, uintptr_t header_mask, double value)
	{
		char buf[128];
		sprintf(buf, "%.17g", value);

return set_value_ascii(dest, header, header_mask, buf);
	}

template <typename String, typename Header>
	PUGI__FN bool set_value_bool(String& dest, Header& header, uintptr_t header_mask, bool value)
	{
		return strcpy_insitu(dest, header, header_mask, value ? PUGIXML_TEXT("true") : PUGIXML_TEXT("false"), value ? 4 : 5);
	}

PUGI__FN xml_parse_result load_buffer_impl(xml_document_struct* doc, xml_node_struct* root, void* contents, size_t size, unsigned int options, xml_encoding encoding, bool is_mutable, bool own, char_t** out_buffer)
	{
		// check input buffer
		if (!contents && size) return make_parse_result(status_io_error);

// get actual encoding
		xml_encoding buffer_encoding = impl::get_buffer_encoding(encoding, contents, size);

// get private buffer
		char_t* buffer = 0;
		size_t length = 0;

if (!impl::convert_buffer(buffer, length, buffer_encoding, contents, size, is_mutable)) return impl::make_parse_result(status_out_of_memory);

// delete original buffer if we performed a conversion
		if (own && buffer != contents && contents) impl::xml_memory::deallocate(contents);

// grab onto buffer if it's our buffer, user is responsible for deallocating contents himself
		if (own || buffer != contents) *out_buffer = buffer;

// store buffer for offset_debug
		doc->buffer = buffer;

// parse
		xml_parse_result res = impl::xml_parser::parse(buffer, length, doc, root, options);

// remember encoding
		res.encoding = buffer_encoding;

return res;
	}

// we need to get length of entire file to load it in memory; the only (relatively) sane way to do it is via seek/tell trick
	PUGI__FN xml_parse_status get_file_size(FILE* file, size_t& out_result)
	{
	#if defined(PUGI__MSVC_CRT_VERSION) && PUGI__MSVC_CRT_VERSION >= 1400 && !defined(_WIN32_WCE)
		// there are 64-bit versions of fseek/ftell, let's use them
		typedef __int64 length_type;

_fseeki64(file, 0, SEEK_END);
		length_type length = _ftelli64(file);
		_fseeki64(file, 0, SEEK_SET);
	#elif defined(__MINGW32__) && !defined(__NO_MINGW_LFS) && (!defined(__STRICT_ANSI__) || defined(__MINGW64_VERSION_MAJOR))
		// there are 64-bit versions of fseek/ftell, let's use them
		typedef off64_t length_type;

fseeko64(file, 0, SEEK_END);
		length_type length = ftello64(file);
		fseeko64(file, 0, SEEK_SET);
	#else
		// if this is a 32-bit OS, long is enough; if this is a unix system, long is 64-bit, which is enough; otherwise we can't do anything anyway.
		typedef long length_type;

fseek(file, 0, SEEK_END);
		length_type length = ftell(file);
		fseek(file, 0, SEEK_SET);
	#endif

// check for I/O errors
		if (length < 0) return status_io_error;

// check for overflow
		size_t result = static_cast<size_t>(length);

if (static_cast<length_type>(result) != length) return status_out_of_memory;

// finalize
		out_result = result;

return status_ok;
	}

// This function assumes that buffer has extra sizeof(char_t) writable bytes after size
	PUGI__FN size_t zero_terminate_buffer(void* buffer, size_t size, xml_encoding encoding)
	{
		// We only need to zero-terminate if encoding conversion does not do it for us
	#ifdef PUGIXML_WCHAR_MODE
		xml_encoding wchar_encoding = get_wchar_encoding();

if (encoding == wchar_encoding || need_endian_swap_utf(encoding, wchar_encoding))
		{
			size_t length = size / sizeof(char_t);

static_cast<char_t*>(buffer)[length] = 0;
			return (length + 1) * sizeof(char_t);
		}
	#else
		if (encoding == encoding_utf8)
		{
			static_cast<char*>(buffer)[size] = 0;
			return size + 1;
		}
	#endif

return size;
	}

PUGI__FN xml_parse_result load_file_impl(xml_document_struct* doc, FILE* file, unsigned int options, xml_encoding encoding, char_t** out_buffer)
	{
		if (!file) return make_parse_result(status_file_not_found);

// get file size (can result in I/O errors)
		size_t size = 0;
		xml_parse_status size_status = get_file_size(file, size);
		if (size_status != status_ok) return make_parse_result(size_status);

size_t max_suffix_size = sizeof(char_t);

// allocate buffer for the whole file
		char* contents = static_cast<char*>(xml_memory::allocate(size + max_suffix_size));
		if (!contents) return make_parse_result(status_out_of_memory);

// read file in memory
		size_t read_size = fread(contents, 1, size, file);

if (read_size != size)
		{
			xml_memory::deallocate(contents);
			return make_parse_result(status_io_error);
		}

xml_encoding real_encoding = get_buffer_encoding(encoding, contents, size);

return load_buffer_impl(doc, doc, contents, zero_terminate_buffer(contents, size, real_encoding), options, real_encoding, true, true, out_buffer);
	}

PUGI__FN void close_file(FILE* file)
	{
		fclose(file);
	}

#ifndef PUGIXML_NO_STL
	template <typename T> struct xml_stream_chunk
	{
		static xml_stream_chunk* create()
		{
			void* memory = xml_memory::allocate(sizeof(xml_stream_chunk));
			if (!memory) return 0;

return new (memory) xml_stream_chunk();
		}

static void destroy(xml_stream_chunk* chunk)
		{
			// free chunk chain
			while (chunk)
			{
				xml_stream_chunk* next_ = chunk->next;

xml_memory::deallocate(chunk);

chunk = next_;
			}
		}

xml_stream_chunk(): next(0), size(0)
		{
		}

xml_stream_chunk* next;
		size_t size;

T data[xml_memory_page_size / sizeof(T)];
	};

template <typename T> PUGI__FN xml_parse_status load_stream_data_noseek(std::basic_istream<T>& stream, void** out_buffer, size_t* out_size)
	{
		auto_deleter<xml_stream_chunk<T> > chunks(0, xml_stream_chunk<T>::destroy);

// read file to a chunk list
		size_t total = 0;
		xml_stream_chunk<T>* last = 0;

while (!stream.eof())
		{
			// allocate new chunk
			xml_stream_chunk<T>* chunk = xml_stream_chunk<T>::create();
			if (!chunk) return status_out_of_memory;

// append chunk to list
			if (last) last = last->next = chunk;
			else chunks.data = last = chunk;

// read data to chunk
			stream.read(chunk->data, static_cast<std::streamsize>(sizeof(chunk->data) / sizeof(T)));
			chunk->size = static_cast<size_t>(stream.gcount()) * sizeof(T);

// read may set failbit | eofbit in case gcount() is less than read length, so check for other I/O errors
			if (stream.bad() || (!stream.eof() && stream.fail())) return status_io_error;

// guard against huge files (chunk size is small enough to make this overflow check work)
			if (total + chunk->size < total) return status_out_of_memory;
			total += chunk->size;
		}

size_t max_suffix_size = sizeof(char_t);

// copy chunk list to a contiguous buffer
		char* buffer = static_cast<char*>(xml_memory::allocate(total + max_suffix_size));
		if (!buffer) return status_out_of_memory;

char* write = buffer;

for (xml_stream_chunk<T>* chunk = chunks.data; chunk; chunk = chunk->next)
		{
			assert(write + chunk->size <= buffer + total);
			memcpy(write, chunk->data, chunk->size);
			write += chunk->size;
		}

assert(write == buffer + total);

// return buffer
		*out_buffer = buffer;
		*out_size = total;

return status_ok;
	}

template <typename T> PUGI__FN xml_parse_status load_stream_data_seek(std::basic_istream<T>& stream, void** out_buffer, size_t* out_size)
	{
		// get length of remaining data in stream
		typename std::basic_istream<T>::pos_type pos = stream.tellg();
		stream.seekg(0, std::ios::end);
		std::streamoff length = stream.tellg() - pos;
		stream.seekg(pos);

if (stream.fail() || pos < 0) return status_io_error;

// guard against huge files
		size_t read_length = static_cast<size_t>(length);

if (static_cast<std::streamsize>(read_length) != length || length < 0) return status_out_of_memory;

size_t max_suffix_size = sizeof(char_t);

// read stream data into memory (guard against stream exceptions with buffer holder)
		auto_deleter<void> buffer(xml_memory::allocate(read_length * sizeof(T) + max_suffix_size), xml_memory::deallocate);
		if (!buffer.data) return status_out_of_memory;

stream.read(static_cast<T*>(buffer.data), static_cast<std::streamsize>(read_length));

// read may set failbit | eofbit in case gcount() is less than read_length (i.e. line ending conversion), so check for other I/O errors
		if (stream.bad() || (!stream.eof() && stream.fail())) return status_io_error;

// return buffer
		size_t actual_length = static_cast<size_t>(stream.gcount());
		assert(actual_length <= read_length);

*out_buffer = buffer.release();
		*out_size = actual_length * sizeof(T);

return status_ok;
	}

template <typename T> PUGI__FN xml_parse_result load_stream_impl(xml_document_struct* doc, std::basic_istream<T>& stream, unsigned int options, xml_encoding encoding, char_t** out_buffer)
	{
		void* buffer = 0;
		size_t size = 0;
		xml_parse_status status = status_ok;

// if stream has an error bit set, bail out (otherwise tellg() can fail and we'll clear error bits)
		if (stream.fail()) return make_parse_result(status_io_error);

// load stream to memory (using seek-based implementation if possible, since it's faster and takes less memory)
		if (stream.tellg() < 0)
		{
			stream.clear(); // clear error flags that could be set by a failing tellg
			status = load_stream_data_noseek(stream, &buffer, &size);
		}
		else
			status = load_stream_data_seek(stream, &buffer, &size);

if (status != status_ok) return make_parse_result(status);

xml_encoding real_encoding = get_buffer_encoding(encoding, buffer, size);

return load_buffer_impl(doc, doc, buffer, zero_terminate_buffer(buffer, size, real_encoding), options, real_encoding, true, true, out_buffer);
	}
#endif

#if defined(PUGI__MSVC_CRT_VERSION) || defined(__BORLANDC__) || (defined(__MINGW32__) && (!defined(__STRICT_ANSI__) || defined(__MINGW64_VERSION_MAJOR)))
	PUGI__FN FILE* open_file_wide(const wchar_t* path, const wchar_t* mode)
	{
		return _wfopen(path, mode);
	}
#else
	PUGI__FN char* convert_path_heap(const wchar_t* str)
	{
		assert(str);

// first pass: get length in utf8 characters
		size_t length = strlength_wide(str);
		size_t size = as_utf8_begin(str, length);

// allocate resulting string
		char* result = static_cast<char*>(xml_memory::allocate(size + 1));
		if (!result) return 0;

// second pass: convert to utf8
		as_utf8_end(result, size, str, length);

// zero-terminate
		result[size] = 0;

return result;
	}

PUGI__FN FILE* open_file_wide(const wchar_t* path, const wchar_t* mode)
	{
		// there is no standard function to open wide paths, so our best bet is to try utf8 path
		char* path_utf8 = convert_path_heap(path);
		if (!path_utf8) return 0;

// convert mode to ASCII (we mirror _wfopen interface)
		char mode_ascii[4] = {0};
		for (size_t i = 0; mode[i]; ++i) mode_ascii[i] = static_cast<char>(mode[i]);

// try to open the utf8 path
		FILE* result = fopen(path_utf8, mode_ascii);

// free dummy buffer
		xml_memory::deallocate(path_utf8);

return result;
	}
#endif

PUGI__FN bool save_file_impl(const xml_document& doc, FILE* file, const char_t* indent, unsigned int flags, xml_encoding encoding)
	{
		if (!file) return false;

xml_writer_file writer(file);
		doc.save(writer, indent, flags, encoding);

return ferror(file) == 0;
	}

struct name_null_sentry
	{
		xml_node_struct* node;
		char_t* name;

name_null_sentry(xml_node_struct* node_): node(node_), name(node_->name)
		{
			node->name = 0;
		}

~name_null_sentry()
		{
			node->name = name;
		}
	};
PUGI__NS_END

namespace pugi
{
	PUGI__FN xml_writer_file::xml_writer_file(void* file_): file(file_)
	{
	}

PUGI__FN void xml_writer_file::write(const void* data, size_t size)
	{
		size_t result = fwrite(data, 1, size, static_cast<FILE*>(file));
		(void)!result; // unfortunately we can't do proper error handling here
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN xml_writer_stream::xml_writer_stream(std::basic_ostream<char, std::char_traits<char> >& stream): narrow_stream(&stream), wide_stream(0)
	{
	}

PUGI__FN xml_writer_stream::xml_writer_stream(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& stream): narrow_stream(0), wide_stream(&stream)
	{
	}

PUGI__FN void xml_writer_stream::write(const void* data, size_t size)
	{
		if (narrow_stream)
		{
			assert(!wide_stream);
			narrow_stream->write(reinterpret_cast<const char*>(data), static_cast<std::streamsize>(size));
		}
		else
		{
			assert(wide_stream);
			assert(size % sizeof(wchar_t) == 0);

wide_stream->write(reinterpret_cast<const wchar_t*>(data), static_cast<std::streamsize>(size / sizeof(wchar_t)));
		}
	}
#endif

PUGI__FN xml_tree_walker::xml_tree_walker(): _depth(0)
	{
	}

PUGI__FN xml_tree_walker::~xml_tree_walker()
	{
	}

PUGI__FN int xml_tree_walker::depth() const
	{
		return _depth;
	}

PUGI__FN bool xml_tree_walker::begin(xml_node&)
	{
		return true;
	}

PUGI__FN bool xml_tree_walker::end(xml_node&)
	{
		return true;
	}

PUGI__FN xml_attribute::xml_attribute(): _attr(0)
	{
	}

PUGI__FN xml_attribute::xml_attribute(xml_attribute_struct* attr): _attr(attr)
	{
	}

PUGI__FN static void unspecified_bool_xml_attribute(xml_attribute***)
	{
	}

PUGI__FN xml_attribute::operator xml_attribute::unspecified_bool_type() const
	{
		return _attr ? unspecified_bool_xml_attribute : 0;
	}

PUGI__FN bool xml_attribute::operator!() const
	{
		return !_attr;
	}

PUGI__FN bool xml_attribute::operator==(const xml_attribute& r) const
	{
		return (_attr == r._attr);
	}

PUGI__FN bool xml_attribute::operator!=(const xml_attribute& r) const
	{
		return (_attr != r._attr);
	}

PUGI__FN bool xml_attribute::operator<(const xml_attribute& r) const
	{
		return (_attr < r._attr);
	}

PUGI__FN bool xml_attribute::operator>(const xml_attribute& r) const
	{
		return (_attr > r._attr);
	}

PUGI__FN bool xml_attribute::operator<=(const xml_attribute& r) const
	{
		return (_attr <= r._attr);
	}

PUGI__FN bool xml_attribute::operator>=(const xml_attribute& r) const
	{
		return (_attr >= r._attr);
	}

PUGI__FN xml_attribute xml_attribute::next_attribute() const
	{
		return _attr ? xml_attribute(_attr->next_attribute) : xml_attribute();
	}

PUGI__FN xml_attribute xml_attribute::previous_attribute() const
	{
		return _attr && _attr->prev_attribute_c->next_attribute ? xml_attribute(_attr->prev_attribute_c) : xml_attribute();
	}

PUGI__FN const char_t* xml_attribute::as_string(const char_t* def) const
	{
		return (_attr && _attr->value) ? _attr->value + 0 : def;
	}

PUGI__FN int xml_attribute::as_int(int def) const
	{
		return (_attr && _attr->value) ? impl::get_value_int(_attr->value) : def;
	}

PUGI__FN unsigned int xml_attribute::as_uint(unsigned int def) const
	{
		return (_attr && _attr->value) ? impl::get_value_uint(_attr->value) : def;
	}

PUGI__FN double xml_attribute::as_double(double def) const
	{
		return (_attr && _attr->value) ? impl::get_value_double(_attr->value) : def;
	}

PUGI__FN float xml_attribute::as_float(float def) const
	{
		return (_attr && _attr->value) ? impl::get_value_float(_attr->value) : def;
	}

PUGI__FN bool xml_attribute::as_bool(bool def) const
	{
		return (_attr && _attr->value) ? impl::get_value_bool(_attr->value) : def;
	}

#ifdef PUGIXML_HAS_LONG_LONG
	PUGI__FN long long xml_attribute::as_llong(long long def) const
	{
		return (_attr && _attr->value) ? impl::get_value_llong(_attr->value) : def;
	}

PUGI__FN unsigned long long xml_attribute::as_ullong(unsigned long long def) const
	{
		return (_attr && _attr->value) ? impl::get_value_ullong(_attr->value) : def;
	}
#endif

PUGI__FN bool xml_attribute::empty() const
	{
		return !_attr;
	}

PUGI__FN const char_t* xml_attribute::name() const
	{
		return (_attr && _attr->name) ? _attr->name + 0 : PUGIXML_TEXT("");
	}

PUGI__FN const char_t* xml_attribute::value() const
	{
		return (_attr && _attr->value) ? _attr->value + 0 : PUGIXML_TEXT("");
	}

PUGI__FN size_t xml_attribute::hash_value() const
	{
		return static_cast<size_t>(reinterpret_cast<uintptr_t>(_attr) / sizeof(xml_attribute_struct));
	}

PUGI__FN xml_attribute_struct* xml_attribute::internal_object() const
	{
		return _attr;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(const char_t* rhs)
	{
		set_value(rhs);
		return *this;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(int rhs)
	{
		set_value(rhs);
		return *this;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(unsigned int rhs)
	{
		set_value(rhs);
		return *this;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(long rhs)
	{
		set_value(rhs);
		return *this;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(unsigned long rhs)
	{
		set_value(rhs);
		return *this;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(double rhs)
	{
		set_value(rhs);
		return *this;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(float rhs)
	{
		set_value(rhs);
		return *this;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(bool rhs)
	{
		set_value(rhs);
		return *this;
	}

#ifdef PUGIXML_HAS_LONG_LONG
	PUGI__FN xml_attribute& xml_attribute::operator=(long long rhs)
	{
		set_value(rhs);
		return *this;
	}

PUGI__FN xml_attribute& xml_attribute::operator=(unsigned long long rhs)
	{
		set_value(rhs);
		return *this;
	}
#endif

PUGI__FN bool xml_attribute::set_name(const char_t* rhs)
	{
		if (!_attr) return false;

return impl::strcpy_insitu(_attr->name, _attr->header, impl::xml_memory_page_name_allocated_mask, rhs, impl::strlength(rhs));
	}

PUGI__FN bool xml_attribute::set_value(const char_t* rhs)
	{
		if (!_attr) return false;

return impl::strcpy_insitu(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, impl::strlength(rhs));
	}

PUGI__FN bool xml_attribute::set_value(int rhs)
	{
		if (!_attr) return false;

return impl::set_value_integer<unsigned int>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0);
	}

PUGI__FN bool xml_attribute::set_value(unsigned int rhs)
	{
		if (!_attr) return false;

return impl::set_value_integer<unsigned int>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, false);
	}

PUGI__FN bool xml_attribute::set_value(long rhs)
	{
		if (!_attr) return false;

return impl::set_value_integer<unsigned long>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0);
	}

PUGI__FN bool xml_attribute::set_value(unsigned long rhs)
	{
		if (!_attr) return false;

return impl::set_value_integer<unsigned long>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, false);
	}

PUGI__FN bool xml_attribute::set_value(double rhs)
	{
		if (!_attr) return false;

return impl::set_value_convert(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs);
	}

PUGI__FN bool xml_attribute::set_value(float rhs)
	{
		if (!_attr) return false;

return impl::set_value_convert(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs);
	}

PUGI__FN bool xml_attribute::set_value(bool rhs)
	{
		if (!_attr) return false;

return impl::set_value_bool(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs);
	}

#ifdef PUGIXML_HAS_LONG_LONG
	PUGI__FN bool xml_attribute::set_value(long long rhs)
	{
		if (!_attr) return false;

return impl::set_value_integer<unsigned long long>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0);
	}

PUGI__FN bool xml_attribute::set_value(unsigned long long rhs)
	{
		if (!_attr) return false;

return impl::set_value_integer<unsigned long long>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, false);
	}
#endif

#ifdef __BORLANDC__
	PUGI__FN bool operator&&(const xml_attribute& lhs, bool rhs)
	{
		return (bool)lhs && rhs;
	}

PUGI__FN bool operator||(const xml_attribute& lhs, bool rhs)
	{
		return (bool)lhs || rhs;
	}
#endif

PUGI__FN xml_node::xml_node(): _root(0)
	{
	}

PUGI__FN xml_node::xml_node(xml_node_struct* p): _root(p)
	{
	}

PUGI__FN static void unspecified_bool_xml_node(xml_node***)
	{
	}

PUGI__FN xml_node::operator xml_node::unspecified_bool_type() const
	{
		return _root ? unspecified_bool_xml_node : 0;
	}

PUGI__FN bool xml_node::operator!() const
	{
		return !_root;
	}

PUGI__FN xml_node::iterator xml_node::begin() const
	{
		return iterator(_root ? _root->first_child + 0 : 0, _root);
	}

PUGI__FN xml_node::iterator xml_node::end() const
	{
		return iterator(0, _root);
	}

PUGI__FN xml_node::attribute_iterator xml_node::attributes_begin() const
	{
		return attribute_iterator(_root ? _root->first_attribute + 0 : 0, _root);
	}

PUGI__FN xml_node::attribute_iterator xml_node::attributes_end() const
	{
		return attribute_iterator(0, _root);
	}

PUGI__FN xml_object_range<xml_node_iterator> xml_node::children() const
	{
		return xml_object_range<xml_node_iterator>(begin(), end());
	}

PUGI__FN xml_object_range<xml_named_node_iterator> xml_node::children(const char_t* name_) const
	{
		return xml_object_range<xml_named_node_iterator>(xml_named_node_iterator(child(name_)._root, _root, name_), xml_named_node_iterator(0, _root, name_));
	}

PUGI__FN xml_object_range<xml_attribute_iterator> xml_node::attributes() const
	{
		return xml_object_range<xml_attribute_iterator>(attributes_begin(), attributes_end());
	}

PUGI__FN bool xml_node::operator==(const xml_node& r) const
	{
		return (_root == r._root);
	}

PUGI__FN bool xml_node::operator!=(const xml_node& r) const
	{
		return (_root != r._root);
	}

PUGI__FN bool xml_node::operator<(const xml_node& r) const
	{
		return (_root < r._root);
	}

PUGI__FN bool xml_node::operator>(const xml_node& r) const
	{
		return (_root > r._root);
	}

PUGI__FN bool xml_node::operator<=(const xml_node& r) const
	{
		return (_root <= r._root);
	}

PUGI__FN bool xml_node::operator>=(const xml_node& r) const
	{
		return (_root >= r._root);
	}

PUGI__FN bool xml_node::empty() const
	{
		return !_root;
	}

PUGI__FN const char_t* xml_node::name() const
	{
		return (_root && _root->name) ? _root->name + 0 : PUGIXML_TEXT("");
	}

PUGI__FN xml_node_type xml_node::type() const
	{
		return _root ? PUGI__NODETYPE(_root) : node_null;
	}

PUGI__FN const char_t* xml_node::value() const
	{
		return (_root && _root->value) ? _root->value + 0 : PUGIXML_TEXT("");
	}

PUGI__FN xml_node xml_node::child(const char_t* name_) const
	{
		if (!_root) return xml_node();

for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
			if (i->name && impl::strequal(name_, i->name)) return xml_node(i);

return xml_node();
	}

PUGI__FN xml_attribute xml_node::attribute(const char_t* name_) const
	{
		if (!_root) return xml_attribute();

for (xml_attribute_struct* i = _root->first_attribute; i; i = i->next_attribute)
			if (i->name && impl::strequal(name_, i->name))
				return xml_attribute(i);

return xml_attribute();
	}

PUGI__FN xml_node xml_node::next_sibling(const char_t* name_) const
	{
		if (!_root) return xml_node();

for (xml_node_struct* i = _root->next_sibling; i; i = i->next_sibling)
			if (i->name && impl::strequal(name_, i->name)) return xml_node(i);

return xml_node();
	}

PUGI__FN xml_node xml_node::next_sibling() const
	{
		return _root ? xml_node(_root->next_sibling) : xml_node();
	}

PUGI__FN xml_node xml_node::previous_sibling(const char_t* name_) const
	{
		if (!_root) return xml_node();

for (xml_node_struct* i = _root->prev_sibling_c; i->next_sibling; i = i->prev_sibling_c)
			if (i->name && impl::strequal(name_, i->name)) return xml_node(i);

return xml_node();
	}

PUGI__FN xml_attribute xml_node::attribute(const char_t* name_, xml_attribute& hint_) const
	{
		xml_attribute_struct* hint = hint_._attr;

// if hint is not an attribute of node, behavior is not defined
		assert(!hint || (_root && impl::is_attribute_of(hint, _root)));

if (!_root) return xml_attribute();

// optimistically search from hint up until the end
		for (xml_attribute_struct* i = hint; i; i = i->next_attribute)
			if (i->name && impl::strequal(name_, i->name))
			{
				// update hint to maximize efficiency of searching for consecutive attributes
				hint_._attr = i->next_attribute;

return xml_attribute(i);
			}

// wrap around and search from the first attribute until the hint
		// 'j' null pointer check is technically redundant, but it prevents a crash in case the assertion above fails
		for (xml_attribute_struct* j = _root->first_attribute; j && j != hint; j = j->next_attribute)
			if (j->name && impl::strequal(name_, j->name))
			{
				// update hint to maximize efficiency of searching for consecutive attributes
				hint_._attr = j->next_attribute;

return xml_attribute(j);
			}

return xml_attribute();
	}

PUGI__FN xml_node xml_node::previous_sibling() const
	{
		if (!_root) return xml_node();

if (_root->prev_sibling_c->next_sibling) return xml_node(_root->prev_sibling_c);
		else return xml_node();
	}

PUGI__FN xml_node xml_node::parent() const
	{
		return _root ? xml_node(_root->parent) : xml_node();
	}

PUGI__FN xml_node xml_node::root() const
	{
		return _root ? xml_node(&impl::get_document(_root)) : xml_node();
	}

PUGI__FN xml_text xml_node::text() const
	{
		return xml_text(_root);
	}

PUGI__FN const char_t* xml_node::child_value() const
	{
		if (!_root) return PUGIXML_TEXT("");

// element nodes can have value if parse_embed_pcdata was used
		if (PUGI__NODETYPE(_root) == node_element && _root->value)
			return _root->value;

for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
			if (impl::is_text_node(i) && i->value)
				return i->value;

return PUGIXML_TEXT("");
	}

PUGI__FN const char_t* xml_node::child_value(const char_t* name_) const
	{
		return child(name_).child_value();
	}

PUGI__FN xml_attribute xml_node::first_attribute() const
	{
		return _root ? xml_attribute(_root->first_attribute) : xml_attribute();
	}

PUGI__FN xml_attribute xml_node::last_attribute() const
	{
		return _root && _root->first_attribute ? xml_attribute(_root->first_attribute->prev_attribute_c) : xml_attribute();
	}

PUGI__FN xml_node xml_node::first_child() const
	{
		return _root ? xml_node(_root->first_child) : xml_node();
	}

PUGI__FN xml_node xml_node::last_child() const
	{
		return _root && _root->first_child ? xml_node(_root->first_child->prev_sibling_c) : xml_node();
	}

PUGI__FN bool xml_node::set_name(const char_t* rhs)
	{
		xml_node_type type_ = _root ? PUGI__NODETYPE(_root) : node_null;

if (type_ != node_element && type_ != node_pi && type_ != node_declaration)
			return false;

return impl::strcpy_insitu(_root->name, _root->header, impl::xml_memory_page_name_allocated_mask, rhs, impl::strlength(rhs));
	}

PUGI__FN bool xml_node::set_value(const char_t* rhs)
	{
		xml_node_type type_ = _root ? PUGI__NODETYPE(_root) : node_null;

if (type_ != node_pcdata && type_ != node_cdata && type_ != node_comment && type_ != node_pi && type_ != node_doctype)
			return false;

return impl::strcpy_insitu(_root->value, _root->header, impl::xml_memory_page_value_allocated_mask, rhs, impl::strlength(rhs));
	}

PUGI__FN xml_attribute xml_node::append_attribute(const char_t* name_)
	{
		if (!impl::allow_insert_attribute(type())) return xml_attribute();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_attribute();

xml_attribute a(impl::allocate_attribute(alloc));
		if (!a) return xml_attribute();

impl::append_attribute(a._attr, _root);

a.set_name(name_);

return a;
	}

PUGI__FN xml_attribute xml_node::prepend_attribute(const char_t* name_)
	{
		if (!impl::allow_insert_attribute(type())) return xml_attribute();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_attribute();

xml_attribute a(impl::allocate_attribute(alloc));
		if (!a) return xml_attribute();

impl::prepend_attribute(a._attr, _root);

a.set_name(name_);

return a;
	}

PUGI__FN xml_attribute xml_node::insert_attribute_after(const char_t* name_, const xml_attribute& attr)
	{
		if (!impl::allow_insert_attribute(type())) return xml_attribute();
		if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_attribute();

xml_attribute a(impl::allocate_attribute(alloc));
		if (!a) return xml_attribute();

impl::insert_attribute_after(a._attr, attr._attr, _root);

a.set_name(name_);

return a;
	}

PUGI__FN xml_attribute xml_node::insert_attribute_before(const char_t* name_, const xml_attribute& attr)
	{
		if (!impl::allow_insert_attribute(type())) return xml_attribute();
		if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_attribute();

xml_attribute a(impl::allocate_attribute(alloc));
		if (!a) return xml_attribute();

impl::insert_attribute_before(a._attr, attr._attr, _root);

a.set_name(name_);

return a;
	}

PUGI__FN xml_attribute xml_node::append_copy(const xml_attribute& proto)
	{
		if (!proto) return xml_attribute();
		if (!impl::allow_insert_attribute(type())) return xml_attribute();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_attribute();

xml_attribute a(impl::allocate_attribute(alloc));
		if (!a) return xml_attribute();

impl::append_attribute(a._attr, _root);
		impl::node_copy_attribute(a._attr, proto._attr);

return a;
	}

PUGI__FN xml_attribute xml_node::prepend_copy(const xml_attribute& proto)
	{
		if (!proto) return xml_attribute();
		if (!impl::allow_insert_attribute(type())) return xml_attribute();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_attribute();

xml_attribute a(impl::allocate_attribute(alloc));
		if (!a) return xml_attribute();

impl::prepend_attribute(a._attr, _root);
		impl::node_copy_attribute(a._attr, proto._attr);

return a;
	}

PUGI__FN xml_attribute xml_node::insert_copy_after(const xml_attribute& proto, const xml_attribute& attr)
	{
		if (!proto) return xml_attribute();
		if (!impl::allow_insert_attribute(type())) return xml_attribute();
		if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_attribute();

xml_attribute a(impl::allocate_attribute(alloc));
		if (!a) return xml_attribute();

impl::insert_attribute_after(a._attr, attr._attr, _root);
		impl::node_copy_attribute(a._attr, proto._attr);

return a;
	}

PUGI__FN xml_attribute xml_node::insert_copy_before(const xml_attribute& proto, const xml_attribute& attr)
	{
		if (!proto) return xml_attribute();
		if (!impl::allow_insert_attribute(type())) return xml_attribute();
		if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_attribute();

xml_attribute a(impl::allocate_attribute(alloc));
		if (!a) return xml_attribute();

impl::insert_attribute_before(a._attr, attr._attr, _root);
		impl::node_copy_attribute(a._attr, proto._attr);

return a;
	}

PUGI__FN xml_node xml_node::append_child(xml_node_type type_)
	{
		if (!impl::allow_insert_child(type(), type_)) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

xml_node n(impl::allocate_node(alloc, type_));
		if (!n) return xml_node();

impl::append_node(n._root, _root);

if (type_ == node_declaration) n.set_name(PUGIXML_TEXT("xml"));

return n;
	}

PUGI__FN xml_node xml_node::prepend_child(xml_node_type type_)
	{
		if (!impl::allow_insert_child(type(), type_)) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

xml_node n(impl::allocate_node(alloc, type_));
		if (!n) return xml_node();

impl::prepend_node(n._root, _root);

if (type_ == node_declaration) n.set_name(PUGIXML_TEXT("xml"));

return n;
	}

PUGI__FN xml_node xml_node::insert_child_before(xml_node_type type_, const xml_node& node)
	{
		if (!impl::allow_insert_child(type(), type_)) return xml_node();
		if (!node._root || node._root->parent != _root) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

xml_node n(impl::allocate_node(alloc, type_));
		if (!n) return xml_node();

impl::insert_node_before(n._root, node._root);

if (type_ == node_declaration) n.set_name(PUGIXML_TEXT("xml"));

return n;
	}

PUGI__FN xml_node xml_node::insert_child_after(xml_node_type type_, const xml_node& node)
	{
		if (!impl::allow_insert_child(type(), type_)) return xml_node();
		if (!node._root || node._root->parent != _root) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

xml_node n(impl::allocate_node(alloc, type_));
		if (!n) return xml_node();

impl::insert_node_after(n._root, node._root);

if (type_ == node_declaration) n.set_name(PUGIXML_TEXT("xml"));

return n;
	}

PUGI__FN xml_node xml_node::append_child(const char_t* name_)
	{
		xml_node result = append_child(node_element);

result.set_name(name_);

return result;
	}

PUGI__FN xml_node xml_node::prepend_child(const char_t* name_)
	{
		xml_node result = prepend_child(node_element);

result.set_name(name_);

return result;
	}

PUGI__FN xml_node xml_node::insert_child_after(const char_t* name_, const xml_node& node)
	{
		xml_node result = insert_child_after(node_element, node);

result.set_name(name_);

return result;
	}

PUGI__FN xml_node xml_node::insert_child_before(const char_t* name_, const xml_node& node)
	{
		xml_node result = insert_child_before(node_element, node);

result.set_name(name_);

return result;
	}

PUGI__FN xml_node xml_node::append_copy(const xml_node& proto)
	{
		xml_node_type type_ = proto.type();
		if (!impl::allow_insert_child(type(), type_)) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

xml_node n(impl::allocate_node(alloc, type_));
		if (!n) return xml_node();

impl::append_node(n._root, _root);
		impl::node_copy_tree(n._root, proto._root);

return n;
	}

PUGI__FN xml_node xml_node::prepend_copy(const xml_node& proto)
	{
		xml_node_type type_ = proto.type();
		if (!impl::allow_insert_child(type(), type_)) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

xml_node n(impl::allocate_node(alloc, type_));
		if (!n) return xml_node();

impl::prepend_node(n._root, _root);
		impl::node_copy_tree(n._root, proto._root);

return n;
	}

PUGI__FN xml_node xml_node::insert_copy_after(const xml_node& proto, const xml_node& node)
	{
		xml_node_type type_ = proto.type();
		if (!impl::allow_insert_child(type(), type_)) return xml_node();
		if (!node._root || node._root->parent != _root) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

xml_node n(impl::allocate_node(alloc, type_));
		if (!n) return xml_node();

impl::insert_node_after(n._root, node._root);
		impl::node_copy_tree(n._root, proto._root);

return n;
	}

PUGI__FN xml_node xml_node::insert_copy_before(const xml_node& proto, const xml_node& node)
	{
		xml_node_type type_ = proto.type();
		if (!impl::allow_insert_child(type(), type_)) return xml_node();
		if (!node._root || node._root->parent != _root) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

xml_node n(impl::allocate_node(alloc, type_));
		if (!n) return xml_node();

impl::insert_node_before(n._root, node._root);
		impl::node_copy_tree(n._root, proto._root);

return n;
	}

PUGI__FN xml_node xml_node::append_move(const xml_node& moved)
	{
		if (!impl::allow_move(*this, moved)) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

// disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
		impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;

impl::remove_node(moved._root);
		impl::append_node(moved._root, _root);

return moved;
	}

PUGI__FN xml_node xml_node::prepend_move(const xml_node& moved)
	{
		if (!impl::allow_move(*this, moved)) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

impl::remove_node(moved._root);
		impl::prepend_node(moved._root, _root);

return moved;
	}

PUGI__FN xml_node xml_node::insert_move_after(const xml_node& moved, const xml_node& node)
	{
		if (!impl::allow_move(*this, moved)) return xml_node();
		if (!node._root || node._root->parent != _root) return xml_node();
		if (moved._root == node._root) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

impl::remove_node(moved._root);
		impl::insert_node_after(moved._root, node._root);

return moved;
	}

PUGI__FN xml_node xml_node::insert_move_before(const xml_node& moved, const xml_node& node)
	{
		if (!impl::allow_move(*this, moved)) return xml_node();
		if (!node._root || node._root->parent != _root) return xml_node();
		if (moved._root == node._root) return xml_node();

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return xml_node();

impl::remove_node(moved._root);
		impl::insert_node_before(moved._root, node._root);

return moved;
	}

PUGI__FN bool xml_node::remove_attribute(const char_t* name_)
	{
		return remove_attribute(attribute(name_));
	}

PUGI__FN bool xml_node::remove_attribute(const xml_attribute& a)
	{
		if (!_root || !a._attr) return false;
		if (!impl::is_attribute_of(a._attr, _root)) return false;

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return false;

impl::remove_attribute(a._attr, _root);
		impl::destroy_attribute(a._attr, alloc);

return true;
	}

PUGI__FN bool xml_node::remove_child(const char_t* name_)
	{
		return remove_child(child(name_));
	}

PUGI__FN bool xml_node::remove_child(const xml_node& n)
	{
		if (!_root || !n._root || n._root->parent != _root) return false;

impl::xml_allocator& alloc = impl::get_allocator(_root);
		if (!alloc.reserve()) return false;

impl::remove_node(n._root);
		impl::destroy_node(n._root, alloc);

return true;
	}

PUGI__FN xml_parse_result xml_node::append_buffer(const void* contents, size_t size, unsigned int options, xml_encoding encoding)
	{
		// append_buffer is only valid for elements/documents
		if (!impl::allow_insert_child(type(), node_element)) return impl::make_parse_result(status_append_invalid_root);

// get document node
		impl::xml_document_struct* doc = &impl::get_document(_root);

// disable document_buffer_order optimization since in a document with multiple buffers comparing buffer pointers does not make sense
		doc->header |= impl::xml_memory_page_contents_shared_mask;

// get extra buffer element (we'll store the document fragment buffer there so that we can deallocate it later)
		impl::xml_memory_page* page = 0;
		impl::xml_extra_buffer* extra = static_cast<impl::xml_extra_buffer*>(doc->allocate_memory(sizeof(impl::xml_extra_buffer), page));
		(void)page;

if (!extra) return impl::make_parse_result(status_out_of_memory);

// add extra buffer to the list
		extra->buffer = 0;
		extra->next = doc->extra_buffers;
		doc->extra_buffers = extra;

// name of the root has to be NULL before parsing - otherwise closing node mismatches will not be detected at the top level
		impl::name_null_sentry sentry(_root);

return impl::load_buffer_impl(doc, _root, const_cast<void*>(contents), size, options, encoding, false, false, &extra->buffer);
	}

PUGI__FN xml_node xml_node::find_child_by_attribute(const char_t* name_, const char_t* attr_name, const char_t* attr_value) const
	{
		if (!_root) return xml_node();

for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
			if (i->name && impl::strequal(name_, i->name))
			{
				for (xml_attribute_struct* a = i->first_attribute; a; a = a->next_attribute)
					if (a->name && impl::strequal(attr_name, a->name) && impl::strequal(attr_value, a->value ? a->value + 0 : PUGIXML_TEXT("")))
						return xml_node(i);
			}

return xml_node();
	}

PUGI__FN xml_node xml_node::find_child_by_attribute(const char_t* attr_name, const char_t* attr_value) const
	{
		if (!_root) return xml_node();

for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
			for (xml_attribute_struct* a = i->first_attribute; a; a = a->next_attribute)
				if (a->name && impl::strequal(attr_name, a->name) && impl::strequal(attr_value, a->value ? a->value + 0 : PUGIXML_TEXT("")))
					return xml_node(i);

return xml_node();
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN string_t xml_node::path(char_t delimiter) const
	{
		if (!_root) return string_t();

size_t offset = 0;

for (xml_node_struct* i = _root; i; i = i->parent)
		{
			offset += (i != _root);
			offset += i->name ? impl::strlength(i->name) : 0;
		}

string_t result;
		result.resize(offset);

for (xml_node_struct* j = _root; j; j = j->parent)
		{
			if (j != _root)
				result[--offset] = delimiter;

if (j->name && *j->name)
			{
				size_t length = impl::strlength(j->name);

offset -= length;
				memcpy(&result[offset], j->name, length * sizeof(char_t));
			}
		}

assert(offset == 0);

return result;
	}
#endif

PUGI__FN xml_node xml_node::first_element_by_path(const char_t* path_, char_t delimiter) const
	{
		xml_node found = *this; // Current search context.

if (!_root || !path_ || !path_[0]) return found;

if (path_[0] == delimiter)
		{
			// Absolute path; e.g. '/foo/bar'
			found = found.root();
			++path_;
		}

const char_t* path_segment = path_;

while (*path_segment == delimiter) ++path_segment;

const char_t* path_segment_end = path_segment;

while (*path_segment_end && *path_segment_end != delimiter) ++path_segment_end;

if (path_segment == path_segment_end) return found;

const char_t* next_segment = path_segment_end;

while (*next_segment == delimiter) ++next_segment;

if (*path_segment == '.' && path_segment + 1 == path_segment_end)
			return found.first_element_by_path(next_segment, delimiter);
		else if (*path_segment == '.' && *(path_segment+1) == '.' && path_segment + 2 == path_segment_end)
			return found.parent().first_element_by_path(next_segment, delimiter);
		else
		{
			for (xml_node_struct* j = found._root->first_child; j; j = j->next_sibling)
			{
				if (j->name && impl::strequalrange(j->name, path_segment, static_cast<size_t>(path_segment_end - path_segment)))
				{
					xml_node subsearch = xml_node(j).first_element_by_path(next_segment, delimiter);

if (subsearch) return subsearch;
				}
			}

return xml_node();
		}
	}

PUGI__FN bool xml_node::traverse(xml_tree_walker& walker)
	{
		walker._depth = -1;

xml_node arg_begin = *this;
		if (!walker.begin(arg_begin)) return false;

xml_node cur = first_child();

if (cur)
		{
			++walker._depth;

do
			{
				xml_node arg_for_each = cur;
				if (!walker.for_each(arg_for_each))
					return false;

if (cur.first_child())
				{
					++walker._depth;
					cur = cur.first_child();
				}
				else if (cur.next_sibling())
					cur = cur.next_sibling();
				else
				{
					// Borland C++ workaround
					while (!cur.next_sibling() && cur != *this && !cur.parent().empty())
					{
						--walker._depth;
						cur = cur.parent();
					}

if (cur != *this)
						cur = cur.next_sibling();
				}
			}
			while (cur && cur != *this);
		}

assert(walker._depth == -1);

xml_node arg_end = *this;
		return walker.end(arg_end);
	}

PUGI__FN size_t xml_node::hash_value() const
	{
		return static_cast<size_t>(reinterpret_cast<uintptr_t>(_root) / sizeof(xml_node_struct));
	}

PUGI__FN xml_node_struct* xml_node::internal_object() const
	{
		return _root;
	}

PUGI__FN void xml_node::print(xml_writer& writer, const char_t* indent, unsigned int flags, xml_encoding encoding, unsigned int depth) const
	{
		if (!_root) return;

impl::xml_buffered_writer buffered_writer(writer, encoding);

impl::node_output(buffered_writer, _root, indent, flags, depth);

buffered_writer.flush();
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN void xml_node::print(std::basic_ostream<char, std::char_traits<char> >& stream, const char_t* indent, unsigned int flags, xml_encoding encoding, unsigned int depth) const
	{
		xml_writer_stream writer(stream);

print(writer, indent, flags, encoding, depth);
	}

PUGI__FN void xml_node::print(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& stream, const char_t* indent, unsigned int flags, unsigned int depth) const
	{
		xml_writer_stream writer(stream);

print(writer, indent, flags, encoding_wchar, depth);
	}
#endif

PUGI__FN ptrdiff_t xml_node::offset_debug() const
	{
		if (!_root) return -1;

impl::xml_document_struct& doc = impl::get_document(_root);

// we can determine the offset reliably only if there is exactly once parse buffer
		if (!doc.buffer || doc.extra_buffers) return -1;

switch (type())
		{
		case node_document:
			return 0;

case node_element:
		case node_declaration:
		case node_pi:
			return _root->name && (_root->header & impl::xml_memory_page_name_allocated_or_shared_mask) == 0 ? _root->name - doc.buffer : -1;

case node_pcdata:
		case node_cdata:
		case node_comment:
		case node_doctype:
			return _root->value && (_root->header & impl::xml_memory_page_value_allocated_or_shared_mask) == 0 ? _root->value - doc.buffer : -1;

default:
			return -1;
		}
	}

#ifdef __BORLANDC__
	PUGI__FN bool operator&&(const xml_node& lhs, bool rhs)
	{
		return (bool)lhs && rhs;
	}

PUGI__FN bool operator||(const xml_node& lhs, bool rhs)
	{
		return (bool)lhs || rhs;
	}
#endif

PUGI__FN xml_text::xml_text(xml_node_struct* root): _root(root)
	{
	}

PUGI__FN xml_node_struct* xml_text::_data() const
	{
		if (!_root || impl::is_text_node(_root)) return _root;

// element nodes can have value if parse_embed_pcdata was used
		if (PUGI__NODETYPE(_root) == node_element && _root->value)
			return _root;

for (xml_node_struct* node = _root->first_child; node; node = node->next_sibling)
			if (impl::is_text_node(node))
				return node;

return 0;
	}

PUGI__FN xml_node_struct* xml_text::_data_new()
	{
		xml_node_struct* d = _data();
		if (d) return d;

return xml_node(_root).append_child(node_pcdata).internal_object();
	}

PUGI__FN xml_text::xml_text(): _root(0)
	{
	}

PUGI__FN static void unspecified_bool_xml_text(xml_text***)
	{
	}

PUGI__FN xml_text::operator xml_text::unspecified_bool_type() const
	{
		return _data() ? unspecified_bool_xml_text : 0;
	}

PUGI__FN bool xml_text::operator!() const
	{
		return !_data();
	}

PUGI__FN bool xml_text::empty() const
	{
		return _data() == 0;
	}

PUGI__FN const char_t* xml_text::get() const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? d->value + 0 : PUGIXML_TEXT("");
	}

PUGI__FN const char_t* xml_text::as_string(const char_t* def) const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? d->value + 0 : def;
	}

PUGI__FN int xml_text::as_int(int def) const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? impl::get_value_int(d->value) : def;
	}

PUGI__FN unsigned int xml_text::as_uint(unsigned int def) const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? impl::get_value_uint(d->value) : def;
	}

PUGI__FN double xml_text::as_double(double def) const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? impl::get_value_double(d->value) : def;
	}

PUGI__FN float xml_text::as_float(float def) const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? impl::get_value_float(d->value) : def;
	}

PUGI__FN bool xml_text::as_bool(bool def) const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? impl::get_value_bool(d->value) : def;
	}

#ifdef PUGIXML_HAS_LONG_LONG
	PUGI__FN long long xml_text::as_llong(long long def) const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? impl::get_value_llong(d->value) : def;
	}

PUGI__FN unsigned long long xml_text::as_ullong(unsigned long long def) const
	{
		xml_node_struct* d = _data();

return (d && d->value) ? impl::get_value_ullong(d->value) : def;
	}
#endif

PUGI__FN bool xml_text::set(const char_t* rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::strcpy_insitu(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, impl::strlength(rhs)) : false;
	}

PUGI__FN bool xml_text::set(int rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_integer<unsigned int>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0) : false;
	}

PUGI__FN bool xml_text::set(unsigned int rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_integer<unsigned int>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, false) : false;
	}

PUGI__FN bool xml_text::set(long rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_integer<unsigned long>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0) : false;
	}

PUGI__FN bool xml_text::set(unsigned long rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_integer<unsigned long>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, false) : false;
	}

PUGI__FN bool xml_text::set(float rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_convert(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs) : false;
	}

PUGI__FN bool xml_text::set(double rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_convert(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs) : false;
	}

PUGI__FN bool xml_text::set(bool rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_bool(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs) : false;
	}

#ifdef PUGIXML_HAS_LONG_LONG
	PUGI__FN bool xml_text::set(long long rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_integer<unsigned long long>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0) : false;
	}

PUGI__FN bool xml_text::set(unsigned long long rhs)
	{
		xml_node_struct* dn = _data_new();

return dn ? impl::set_value_integer<unsigned long long>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, false) : false;
	}
#endif

PUGI__FN xml_text& xml_text::operator=(const char_t* rhs)
	{
		set(rhs);
		return *this;
	}

PUGI__FN xml_text& xml_text::operator=(int rhs)
	{
		set(rhs);
		return *this;
	}

PUGI__FN xml_text& xml_text::operator=(unsigned int rhs)
	{
		set(rhs);
		return *this;
	}

PUGI__FN xml_text& xml_text::operator=(long rhs)
	{
		set(rhs);
		return *this;
	}

PUGI__FN xml_text& xml_text::operator=(unsigned long rhs)
	{
		set(rhs);
		return *this;
	}

PUGI__FN xml_text& xml_text::operator=(double rhs)
	{
		set(rhs);
		return *this;
	}

PUGI__FN xml_text& xml_text::operator=(float rhs)
	{
		set(rhs);
		return *this;
	}

PUGI__FN xml_text& xml_text::operator=(bool rhs)
	{
		set(rhs);
		return *this;
	}

#ifdef PUGIXML_HAS_LONG_LONG
	PUGI__FN xml_text& xml_text::operator=(long long rhs)
	{
		set(rhs);
		return *this;
	}

PUGI__FN xml_text& xml_text::operator=(unsigned long long rhs)
	{
		set(rhs);
		return *this;
	}
#endif

PUGI__FN xml_node xml_text::data() const
	{
		return xml_node(_data());
	}

#ifdef __BORLANDC__
	PUGI__FN bool operator&&(const xml_text& lhs, bool rhs)
	{
		return (bool)lhs && rhs;
	}

PUGI__FN bool operator||(const xml_text& lhs, bool rhs)
	{
		return (bool)lhs || rhs;
	}
#endif

PUGI__FN xml_node_iterator::xml_node_iterator()
	{
	}

PUGI__FN xml_node_iterator::xml_node_iterator(const xml_node& node): _wrap(node), _parent(node.parent())
	{
	}

PUGI__FN xml_node_iterator::xml_node_iterator(xml_node_struct* ref, xml_node_struct* parent): _wrap(ref), _parent(parent)
	{
	}

PUGI__FN bool xml_node_iterator::operator==(const xml_node_iterator& rhs) const
	{
		return _wrap._root == rhs._wrap._root && _parent._root == rhs._parent._root;
	}

PUGI__FN bool xml_node_iterator::operator!=(const xml_node_iterator& rhs) const
	{
		return _wrap._root != rhs._wrap._root || _parent._root != rhs._parent._root;
	}

PUGI__FN xml_node& xml_node_iterator::operator*() const
	{
		assert(_wrap._root);
		return _wrap;
	}

PUGI__FN xml_node* xml_node_iterator::operator->() const
	{
		assert(_wrap._root);
		return const_cast<xml_node*>(&_wrap); // BCC5 workaround
	}

PUGI__FN const xml_node_iterator& xml_node_iterator::operator++()
	{
		assert(_wrap._root);
		_wrap._root = _wrap._root->next_sibling;
		return *this;
	}

PUGI__FN xml_node_iterator xml_node_iterator::operator++(int)
	{
		xml_node_iterator temp = *this;
		++*this;
		return temp;
	}

PUGI__FN const xml_node_iterator& xml_node_iterator::operator--()
	{
		_wrap = _wrap._root ? _wrap.previous_sibling() : _parent.last_child();
		return *this;
	}

PUGI__FN xml_node_iterator xml_node_iterator::operator--(int)
	{
		xml_node_iterator temp = *this;
		--*this;
		return temp;
	}

PUGI__FN xml_attribute_iterator::xml_attribute_iterator()
	{
	}

PUGI__FN xml_attribute_iterator::xml_attribute_iterator(const xml_attribute& attr, const xml_node& parent): _wrap(attr), _parent(parent)
	{
	}

PUGI__FN xml_attribute_iterator::xml_attribute_iterator(xml_attribute_struct* ref, xml_node_struct* parent): _wrap(ref), _parent(parent)
	{
	}

PUGI__FN bool xml_attribute_iterator::operator==(const xml_attribute_iterator& rhs) const
	{
		return _wrap._attr == rhs._wrap._attr && _parent._root == rhs._parent._root;
	}

PUGI__FN bool xml_attribute_iterator::operator!=(const xml_attribute_iterator& rhs) const
	{
		return _wrap._attr != rhs._wrap._attr || _parent._root != rhs._parent._root;
	}

PUGI__FN xml_attribute& xml_attribute_iterator::operator*() const
	{
		assert(_wrap._attr);
		return _wrap;
	}

PUGI__FN xml_attribute* xml_attribute_iterator::operator->() const
	{
		assert(_wrap._attr);
		return const_cast<xml_attribute*>(&_wrap); // BCC5 workaround
	}

PUGI__FN const xml_attribute_iterator& xml_attribute_iterator::operator++()
	{
		assert(_wrap._attr);
		_wrap._attr = _wrap._attr->next_attribute;
		return *this;
	}

PUGI__FN xml_attribute_iterator xml_attribute_iterator::operator++(int)
	{
		xml_attribute_iterator temp = *this;
		++*this;
		return temp;
	}

PUGI__FN const xml_attribute_iterator& xml_attribute_iterator::operator--()
	{
		_wrap = _wrap._attr ? _wrap.previous_attribute() : _parent.last_attribute();
		return *this;
	}

PUGI__FN xml_attribute_iterator xml_attribute_iterator::operator--(int)
	{
		xml_attribute_iterator temp = *this;
		--*this;
		return temp;
	}

PUGI__FN xml_named_node_iterator::xml_named_node_iterator(): _name(0)
	{
	}

PUGI__FN xml_named_node_iterator::xml_named_node_iterator(const xml_node& node, const char_t* name): _wrap(node), _parent(node.parent()), _name(name)
	{
	}

PUGI__FN xml_named_node_iterator::xml_named_node_iterator(xml_node_struct* ref, xml_node_struct* parent, const char_t* name): _wrap(ref), _parent(parent), _name(name)
	{
	}

PUGI__FN bool xml_named_node_iterator::operator==(const xml_named_node_iterator& rhs) const
	{
		return _wrap._root == rhs._wrap._root && _parent._root == rhs._parent._root;
	}

PUGI__FN bool xml_named_node_iterator::operator!=(const xml_named_node_iterator& rhs) const
	{
		return _wrap._root != rhs._wrap._root || _parent._root != rhs._parent._root;
	}

PUGI__FN xml_node& xml_named_node_iterator::operator*() const
	{
		assert(_wrap._root);
		return _wrap;
	}

PUGI__FN xml_node* xml_named_node_iterator::operator->() const
	{
		assert(_wrap._root);
		return const_cast<xml_node*>(&_wrap); // BCC5 workaround
	}

PUGI__FN const xml_named_node_iterator& xml_named_node_iterator::operator++()
	{
		assert(_wrap._root);
		_wrap = _wrap.next_sibling(_name);
		return *this;
	}

PUGI__FN xml_named_node_iterator xml_named_node_iterator::operator++(int)
	{
		xml_named_node_iterator temp = *this;
		++*this;
		return temp;
	}

PUGI__FN const xml_named_node_iterator& xml_named_node_iterator::operator--()
	{
		if (_wrap._root)
			_wrap = _wrap.previous_sibling(_name);
		else
		{
			_wrap = _parent.last_child();

if (!impl::strequal(_wrap.name(), _name))
				_wrap = _wrap.previous_sibling(_name);
		}

return *this;
	}

PUGI__FN xml_named_node_iterator xml_named_node_iterator::operator--(int)
	{
		xml_named_node_iterator temp = *this;
		--*this;
		return temp;
	}

PUGI__FN xml_parse_result::xml_parse_result(): status(status_internal_error), offset(0), encoding(encoding_auto)
	{
	}

PUGI__FN xml_parse_result::operator bool() const
	{
		return status == status_ok;
	}

PUGI__FN const char* xml_parse_result::description() const
	{
		switch (status)
		{
		case status_ok: return "No error";

case status_file_not_found: return "File was not found";
		case status_io_error: return "Error reading from file/stream";
		case status_out_of_memory: return "Could not allocate memory";
		case status_internal_error: return "Internal error occurred";

case status_unrecognized_tag: return "Could not determine tag type";

case status_bad_pi: return "Error parsing document declaration/processing instruction";
		case status_bad_comment: return "Error parsing comment";
		case status_bad_cdata: return "Error parsing CDATA section";
		case status_bad_doctype: return "Error parsing document type declaration";
		case status_bad_pcdata: return "Error parsing PCDATA section";
		case status_bad_start_element: return "Error parsing start element tag";
		case status_bad_attribute: return "Error parsing element attribute";
		case status_bad_end_element: return "Error parsing end element tag";
		case status_end_element_mismatch: return "Start-end tags mismatch";

case status_append_invalid_root: return "Unable to append nodes: root is not an element or document";

case status_no_document_element: return "No document element found";

default: return "Unknown error";
		}
	}

PUGI__FN xml_document::xml_document(): _buffer(0)
	{
		_create();
	}

PUGI__FN xml_document::~xml_document()
	{
		_destroy();
	}

PUGI__FN void xml_document::reset()
	{
		_destroy();
		_create();
	}

PUGI__FN void xml_document::reset(const xml_document& proto)
	{
		reset();

for (xml_node cur = proto.first_child(); cur; cur = cur.next_sibling())
			append_copy(cur);
	}

PUGI__FN void xml_document::_create()
	{
		assert(!_root);

#ifdef PUGIXML_COMPACT
		const size_t page_offset = sizeof(uint32_t);
	#else
		const size_t page_offset = 0;
	#endif

// initialize sentinel page
		PUGI__STATIC_ASSERT(sizeof(impl::xml_memory_page) + sizeof(impl::xml_document_struct) + page_offset <= sizeof(_memory));

// prepare page structure
		impl::xml_memory_page* page = impl::xml_memory_page::construct(_memory);
		assert(page);

page->busy_size = impl::xml_memory_page_size;

// setup first page marker
	#ifdef PUGIXML_COMPACT
		// round-trip through void* to avoid 'cast increases required alignment of target type' warning
		page->compact_page_marker = reinterpret_cast<uint32_t*>(static_cast<void*>(reinterpret_cast<char*>(page) + sizeof(impl::xml_memory_page)));
		*page->compact_page_marker = sizeof(impl::xml_memory_page);
	#endif

// allocate new root
		_root = new (reinterpret_cast<char*>(page) + sizeof(impl::xml_memory_page) + page_offset) impl::xml_document_struct(page);
		_root->prev_sibling_c = _root;

// setup sentinel page
		page->allocator = static_cast<impl::xml_document_struct*>(_root);

// setup hash table pointer in allocator
	#ifdef PUGIXML_COMPACT
		page->allocator->_hash = &static_cast<impl::xml_document_struct*>(_root)->hash;
	#endif

// verify the document allocation
		assert(reinterpret_cast<char*>(_root) + sizeof(impl::xml_document_struct) <= _memory + sizeof(_memory));
	}

PUGI__FN void xml_document::_destroy()
	{
		assert(_root);

// destroy static storage
		if (_buffer)
		{
			impl::xml_memory::deallocate(_buffer);
			_buffer = 0;
		}

// destroy extra buffers (note: no need to destroy linked list nodes, they're allocated using document allocator)
		for (impl::xml_extra_buffer* extra = static_cast<impl::xml_document_struct*>(_root)->extra_buffers; extra; extra = extra->next)
		{
			if (extra->buffer) impl::xml_memory::deallocate(extra->buffer);
		}

// destroy dynamic storage, leave sentinel page (it's in static memory)
		impl::xml_memory_page* root_page = PUGI__GETPAGE(_root);
		assert(root_page && !root_page->prev);
		assert(reinterpret_cast<char*>(root_page) >= _memory && reinterpret_cast<char*>(root_page) < _memory + sizeof(_memory));

for (impl::xml_memory_page* page = root_page->next; page; )
		{
			impl::xml_memory_page* next = page->next;

impl::xml_allocator::deallocate_page(page);

page = next;
		}

#ifdef PUGIXML_COMPACT
		// destroy hash table
		static_cast<impl::xml_document_struct*>(_root)->hash.clear();
	#endif

_root = 0;
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN xml_parse_result xml_document::load(std::basic_istream<char, std::char_traits<char> >& stream, unsigned int options, xml_encoding encoding)
	{
		reset();

return impl::load_stream_impl(static_cast<impl::xml_document_struct*>(_root), stream, options, encoding, &_buffer);
	}

PUGI__FN xml_parse_result xml_document::load(std::basic_istream<wchar_t, std::char_traits<wchar_t> >& stream, unsigned int options)
	{
		reset();

return impl::load_stream_impl(static_cast<impl::xml_document_struct*>(_root), stream, options, encoding_wchar, &_buffer);
	}
#endif

PUGI__FN xml_parse_result xml_document::load_string(const char_t* contents, unsigned int options)
	{
		// Force native encoding (skip autodetection)
	#ifdef PUGIXML_WCHAR_MODE
		xml_encoding encoding = encoding_wchar;
	#else
		xml_encoding encoding = encoding_utf8;
	#endif

return load_buffer(contents, impl::strlength(contents) * sizeof(char_t), options, encoding);
	}

PUGI__FN xml_parse_result xml_document::load(const char_t* contents, unsigned int options)
	{
		return load_string(contents, options);
	}

PUGI__FN xml_parse_result xml_document::load_file(const char* path_, unsigned int options, xml_encoding encoding)
	{
		reset();

using impl::auto_deleter; // MSVC7 workaround
		auto_deleter<FILE> file(fopen(path_, "rb"), impl::close_file);

return impl::load_file_impl(static_cast<impl::xml_document_struct*>(_root), file.data, options, encoding, &_buffer);
	}

PUGI__FN xml_parse_result xml_document::load_file(const wchar_t* path_, unsigned int options, xml_encoding encoding)
	{
		reset();

using impl::auto_deleter; // MSVC7 workaround
		auto_deleter<FILE> file(impl::open_file_wide(path_, L"rb"), impl::close_file);

return impl::load_file_impl(static_cast<impl::xml_document_struct*>(_root), file.data, options, encoding, &_buffer);
	}

PUGI__FN xml_parse_result xml_document::load_buffer(const void* contents, size_t size, unsigned int options, xml_encoding encoding)
	{
		reset();

return impl::load_buffer_impl(static_cast<impl::xml_document_struct*>(_root), _root, const_cast<void*>(contents), size, options, encoding, false, false, &_buffer);
	}

PUGI__FN xml_parse_result xml_document::load_buffer_inplace(void* contents, size_t size, unsigned int options, xml_encoding encoding)
	{
		reset();

return impl::load_buffer_impl(static_cast<impl::xml_document_struct*>(_root), _root, contents, size, options, encoding, true, false, &_buffer);
	}

PUGI__FN xml_parse_result xml_document::load_buffer_inplace_own(void* contents, size_t size, unsigned int options, xml_encoding encoding)
	{
		reset();

return impl::load_buffer_impl(static_cast<impl::xml_document_struct*>(_root), _root, contents, size, options, encoding, true, true, &_buffer);
	}

PUGI__FN void xml_document::save(xml_writer& writer, const char_t* indent, unsigned int flags, xml_encoding encoding) const
	{
		impl::xml_buffered_writer buffered_writer(writer, encoding);

if ((flags & format_write_bom) && encoding != encoding_latin1)
		{
			// BOM always represents the codepoint U+FEFF, so just write it in native encoding
		#ifdef PUGIXML_WCHAR_MODE
			unsigned int bom = 0xfeff;
			buffered_writer.write(static_cast<wchar_t>(bom));
		#else
			buffered_writer.write('\xef', '\xbb', '\xbf');
		#endif
		}

if (!(flags & format_no_declaration) && !impl::has_declaration(_root))
		{
			buffered_writer.write_string(PUGIXML_TEXT("<?xml version=\"1.0\""));
			if (encoding == encoding_latin1) buffered_writer.write_string(PUGIXML_TEXT(" encoding=\"ISO-8859-1\""));
			buffered_writer.write('?', '>');
			if (!(flags & format_raw)) buffered_writer.write('\n');
		}

impl::node_output(buffered_writer, _root, indent, flags, 0);

buffered_writer.flush();
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN void xml_document::save(std::basic_ostream<char, std::char_traits<char> >& stream, const char_t* indent, unsigned int flags, xml_encoding encoding) const
	{
		xml_writer_stream writer(stream);

save(writer, indent, flags, encoding);
	}

PUGI__FN void xml_document::save(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& stream, const char_t* indent, unsigned int flags) const
	{
		xml_writer_stream writer(stream);

save(writer, indent, flags, encoding_wchar);
	}
#endif

PUGI__FN bool xml_document::save_file(const char* path_, const char_t* indent, unsigned int flags, xml_encoding encoding) const
	{
		using impl::auto_deleter; // MSVC7 workaround
		auto_deleter<FILE> file(fopen(path_, (flags & format_save_file_text) ? "w" : "wb"), impl::close_file);

return impl::save_file_impl(*this, file.data, indent, flags, encoding);
	}

PUGI__FN bool xml_document::save_file(const wchar_t* path_, const char_t* indent, unsigned int flags, xml_encoding encoding) const
	{
		using impl::auto_deleter; // MSVC7 workaround
		auto_deleter<FILE> file(impl::open_file_wide(path_, (flags & format_save_file_text) ? L"w" : L"wb"), impl::close_file);

return impl::save_file_impl(*this, file.data, indent, flags, encoding);
	}

PUGI__FN xml_node xml_document::document_element() const
	{
		assert(_root);

for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
			if (PUGI__NODETYPE(i) == node_element)
				return xml_node(i);

return xml_node();
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN std::string PUGIXML_FUNCTION as_utf8(const wchar_t* str)
	{
		assert(str);

return impl::as_utf8_impl(str, impl::strlength_wide(str));
	}

PUGI__FN std::string PUGIXML_FUNCTION as_utf8(const std::basic_string<wchar_t>& str)
	{
		return impl::as_utf8_impl(str.c_str(), str.size());
	}

PUGI__FN std::basic_string<wchar_t> PUGIXML_FUNCTION as_wide(const char* str)
	{
		assert(str);

return impl::as_wide_impl(str, strlen(str));
	}

PUGI__FN std::basic_string<wchar_t> PUGIXML_FUNCTION as_wide(const std::string& str)
	{
		return impl::as_wide_impl(str.c_str(), str.size());
	}
#endif

PUGI__FN void PUGIXML_FUNCTION set_memory_management_functions(allocation_function allocate, deallocation_function deallocate)
	{
		impl::xml_memory::allocate = allocate;
		impl::xml_memory::deallocate = deallocate;
	}

PUGI__FN allocation_function PUGIXML_FUNCTION get_memory_allocation_function()
	{
		return impl::xml_memory::allocate;
	}

PUGI__FN deallocation_function PUGIXML_FUNCTION get_memory_deallocation_function()
	{
		return impl::xml_memory::deallocate;
	}
}

PUGI__FN std::bidirectional_iterator_tag _Iter_cat(const pugi::xml_attribute_iterator&)
	{
		return std::bidirectional_iterator_tag();
	}

PUGI__FN std::bidirectional_iterator_tag _Iter_cat(const pugi::xml_named_node_iterator&)
	{
		return std::bidirectional_iterator_tag();
	}
}
#endif

#if !defined(PUGIXML_NO_STL) && defined(__SUNPRO_CC)
namespace std
{
	// Workarounds for (non-standard) iterator category detection
	PUGI__FN std::bidirectional_iterator_tag __iterator_category(const pugi::xml_node_iterator&)
	{
		return std::bidirectional_iterator_tag();
	}

PUGI__FN std::bidirectional_iterator_tag __iterator_category(const pugi::xml_attribute_iterator&)
	{
		return std::bidirectional_iterator_tag();
	}

PUGI__FN std::bidirectional_iterator_tag __iterator_category(const pugi::xml_named_node_iterator&)
	{
		return std::bidirectional_iterator_tag();
	}
}
#endif

#ifndef PUGIXML_NO_XPATH
// STL replacements
PUGI__NS_BEGIN
	struct equal_to
	{
		template <typename T> bool operator()(const T& lhs, const T& rhs) const
		{
			return lhs == rhs;
		}
	};

struct not_equal_to
	{
		template <typename T> bool operator()(const T& lhs, const T& rhs) const
		{
			return lhs != rhs;
		}
	};

struct less
	{
		template <typename T> bool operator()(const T& lhs, const T& rhs) const
		{
			return lhs < rhs;
		}
	};

struct less_equal
	{
		template <typename T> bool operator()(const T& lhs, const T& rhs) const
		{
			return lhs <= rhs;
		}
	};

template <typename T> void swap(T& lhs, T& rhs)
	{
		T temp = lhs;
		lhs = rhs;
		rhs = temp;
	}

template <typename I, typename Pred> I min_element(I begin, I end, const Pred& pred)
	{
		I result = begin;

for (I it = begin + 1; it != end; ++it)
			if (pred(*it, *result))
				result = it;

return result;
	}

template <typename I> void reverse(I begin, I end)
	{
		while (end - begin > 1) swap(*begin++, *--end);
	}

template <typename I> I unique(I begin, I end)
	{
		// fast skip head
		while (end - begin > 1 && *begin != *(begin + 1)) begin++;

if (begin == end) return begin;

// last written element
		I write = begin++;

// merge unique elements
		while (begin != end)
		{
			if (*begin != *write)
				*++write = *begin++;
			else
				begin++;
		}

// past-the-end (write points to live element)
		return write + 1;
	}

template <typename I> void copy_backwards(I begin, I end, I target)
	{
		while (begin != end) *--target = *--end;
	}

template <typename I, typename Pred, typename T> void insertion_sort(I begin, I end, const Pred& pred, T*)
	{
		assert(begin != end);

for (I it = begin + 1; it != end; ++it)
		{
			T val = *it;

if (pred(val, *begin))
			{
				// move to front
				copy_backwards(begin, it, it + 1);
				*begin = val;
			}
			else
			{
				I hole = it;

// move hole backwards
				while (pred(val, *(hole - 1)))
				{
					*hole = *(hole - 1);
					hole--;
				}

// fill hole with element
				*hole = val;
			}
		}
	}

// std variant for elements with ==
	template <typename I, typename Pred> void partition(I begin, I middle, I end, const Pred& pred, I* out_eqbeg, I* out_eqend)
	{
		I eqbeg = middle, eqend = middle + 1;

// expand equal range
		while (eqbeg != begin && *(eqbeg - 1) == *eqbeg) --eqbeg;
		while (eqend != end && *eqend == *eqbeg) ++eqend;

// process outer elements
		I ltend = eqbeg, gtbeg = eqend;

for (;;)
		{
			// find the element from the right side that belongs to the left one
			for (; gtbeg != end; ++gtbeg)
				if (!pred(*eqbeg, *gtbeg))
				{
					if (*gtbeg == *eqbeg) swap(*gtbeg, *eqend++);
					else break;
				}

// find the element from the left side that belongs to the right one
			for (; ltend != begin; --ltend)
				if (!pred(*(ltend - 1), *eqbeg))
				{
					if (*eqbeg == *(ltend - 1)) swap(*(ltend - 1), *--eqbeg);
					else break;
				}

// scanned all elements
			if (gtbeg == end && ltend == begin)
			{
				*out_eqbeg = eqbeg;
				*out_eqend = eqend;
				return;
			}

// make room for elements by moving equal area
			if (gtbeg == end)
			{
				if (--ltend != --eqbeg) swap(*ltend, *eqbeg);
				swap(*eqbeg, *--eqend);
			}
			else if (ltend == begin)
			{
				if (eqend != gtbeg) swap(*eqbeg, *eqend);
				++eqend;
				swap(*gtbeg++, *eqbeg++);
			}
			else swap(*gtbeg++, *--ltend);
		}
	}

template <typename I, typename Pred> void median3(I first, I middle, I last, const Pred& pred)
	{
		if (pred(*middle, *first)) swap(*middle, *first);
		if (pred(*last, *middle)) swap(*last, *middle);
		if (pred(*middle, *first)) swap(*middle, *first);
	}

template <typename I, typename Pred> void median(I first, I middle, I last, const Pred& pred)
	{
		if (last - first <= 40)
		{
			// median of three for small chunks
			median3(first, middle, last, pred);
		}
		else
		{
			// median of nine
			size_t step = (last - first + 1) / 8;

median3(first, first + step, first + 2 * step, pred);
			median3(middle - step, middle, middle + step, pred);
			median3(last - 2 * step, last - step, last, pred);
			median3(first + step, middle, last - step, pred);
		}
	}

template <typename I, typename Pred> void sort(I begin, I end, const Pred& pred)
	{
		// sort large chunks
		while (end - begin > 32)
		{
			// find median element
			I middle = begin + (end - begin) / 2;
			median(begin, middle, end - 1, pred);

// partition in three chunks (< = >)
			I eqbeg, eqend;
			partition(begin, middle, end, pred, &eqbeg, &eqend);

// loop on larger half
			if (eqbeg - begin > end - eqend)
			{
				sort(eqend, end, pred);
				end = eqbeg;
			}
			else
			{
				sort(begin, eqbeg, pred);
				begin = eqend;
			}
		}

// insertion sort small chunk
		if (begin != end) insertion_sort(begin, end, pred, &*begin);
	}
PUGI__NS_END

// Allocator used for AST and evaluation stacks
PUGI__NS_BEGIN
	static const size_t xpath_memory_page_size =
	#ifdef PUGIXML_MEMORY_XPATH_PAGE_SIZE
		PUGIXML_MEMORY_XPATH_PAGE_SIZE
	#else
		4096
	#endif
		;

static const uintptr_t xpath_memory_block_alignment = sizeof(double) > sizeof(void*) ? sizeof(double) : sizeof(void*);

struct xpath_memory_block
	{
		xpath_memory_block* next;
		size_t capacity;

union
		{
			char data[xpath_memory_page_size];
			double alignment;
		};
	};

class xpath_allocator
	{
		xpath_memory_block* _root;
		size_t _root_size;

public:
	#ifdef PUGIXML_NO_EXCEPTIONS
		jmp_buf* error_handler;
	#endif

xpath_allocator(xpath_memory_block* root, size_t root_size = 0): _root(root), _root_size(root_size)
		{
		#ifdef PUGIXML_NO_EXCEPTIONS
			error_handler = 0;
		#endif
		}

void* allocate_nothrow(size_t size)
		{
			// round size up to block alignment boundary
			size = (size + xpath_memory_block_alignment - 1) & ~(xpath_memory_block_alignment - 1);

if (_root_size + size <= _root->capacity)
			{
				void* buf = &_root->data[0] + _root_size;
				_root_size += size;
				return buf;
			}
			else
			{
				// make sure we have at least 1/4th of the page free after allocation to satisfy subsequent allocation requests
				size_t block_capacity_base = sizeof(_root->data);
				size_t block_capacity_req = size + block_capacity_base / 4;
				size_t block_capacity = (block_capacity_base > block_capacity_req) ? block_capacity_base : block_capacity_req;

size_t block_size = block_capacity + offsetof(xpath_memory_block, data);

xpath_memory_block* block = static_cast<xpath_memory_block*>(xml_memory::allocate(block_size));
				if (!block) return 0;

block->next = _root;
				block->capacity = block_capacity;

_root = block;
				_root_size = size;

return block->data;
			}
		}

void* allocate(size_t size)
		{
			void* result = allocate_nothrow(size);

if (!result)
			{
			#ifdef PUGIXML_NO_EXCEPTIONS
				assert(error_handler);
				longjmp(*error_handler, 1);
			#else
				throw std::bad_alloc();
			#endif
			}

return result;
		}

void* reallocate(void* ptr, size_t old_size, size_t new_size)
		{
			// round size up to block alignment boundary
			old_size = (old_size + xpath_memory_block_alignment - 1) & ~(xpath_memory_block_alignment - 1);
			new_size = (new_size + xpath_memory_block_alignment - 1) & ~(xpath_memory_block_alignment - 1);

// we can only reallocate the last object
			assert(ptr == 0 || static_cast<char*>(ptr) + old_size == &_root->data[0] + _root_size);

// adjust root size so that we have not allocated the object at all
			bool only_object = (_root_size == old_size);

if (ptr) _root_size -= old_size;

// allocate a new version (this will obviously reuse the memory if possible)
			void* result = allocate(new_size);
			assert(result);

// we have a new block
			if (result != ptr && ptr)
			{
				// copy old data
				assert(new_size >= old_size);
				memcpy(result, ptr, old_size);

// free the previous page if it had no other objects
				if (only_object)
				{
					assert(_root->data == result);
					assert(_root->next);

xpath_memory_block* next = _root->next->next;

if (next)
					{
						// deallocate the whole page, unless it was the first one
						xml_memory::deallocate(_root->next);
						_root->next = next;
					}
				}
			}

return result;
		}

void revert(const xpath_allocator& state)
		{
			// free all new pages
			xpath_memory_block* cur = _root;

while (cur != state._root)
			{
				xpath_memory_block* next = cur->next;

xml_memory::deallocate(cur);

cur = next;
			}

// restore state
			_root = state._root;
			_root_size = state._root_size;
		}

void release()
		{
			xpath_memory_block* cur = _root;
			assert(cur);

while (cur->next)
			{
				xpath_memory_block* next = cur->next;

xml_memory::deallocate(cur);

cur = next;
			}
		}
	};

struct xpath_allocator_capture
	{
		xpath_allocator_capture(xpath_allocator* alloc): _target(alloc), _state(*alloc)
		{
		}

~xpath_allocator_capture()
		{
			_target->revert(_state);
		}

xpath_allocator* _target;
		xpath_allocator _state;
	};

struct xpath_stack
	{
		xpath_allocator* result;
		xpath_allocator* temp;
	};

struct xpath_stack_data
	{
		xpath_memory_block blocks[2];
		xpath_allocator result;
		xpath_allocator temp;
		xpath_stack stack;

#ifdef PUGIXML_NO_EXCEPTIONS
		jmp_buf error_handler;
	#endif

xpath_stack_data(): result(blocks + 0), temp(blocks + 1)
		{
			blocks[0].next = blocks[1].next = 0;
			blocks[0].capacity = blocks[1].capacity = sizeof(blocks[0].data);

stack.result = &result;
			stack.temp = &temp;

#ifdef PUGIXML_NO_EXCEPTIONS
			result.error_handler = temp.error_handler = &error_handler;
		#endif
		}

~xpath_stack_data()
		{
			result.release();
			temp.release();
		}
	};
PUGI__NS_END

// String class
PUGI__NS_BEGIN
	class xpath_string
	{
		const char_t* _buffer;
		bool _uses_heap;
		size_t _length_heap;

static char_t* duplicate_string(const char_t* string, size_t length, xpath_allocator* alloc)
		{
			char_t* result = static_cast<char_t*>(alloc->allocate((length + 1) * sizeof(char_t)));
			assert(result);

memcpy(result, string, length * sizeof(char_t));
			result[length] = 0;

return result;
		}

xpath_string(const char_t* buffer, bool uses_heap_, size_t length_heap): _buffer(buffer), _uses_heap(uses_heap_), _length_heap(length_heap)
		{
		}

public:
		static xpath_string from_const(const char_t* str)
		{
			return xpath_string(str, false, 0);
		}

static xpath_string from_heap_preallocated(const char_t* begin, const char_t* end)
		{
			assert(begin <= end && *end == 0);

return xpath_string(begin, true, static_cast<size_t>(end - begin));
		}

static xpath_string from_heap(const char_t* begin, const char_t* end, xpath_allocator* alloc)
		{
			assert(begin <= end);

size_t length = static_cast<size_t>(end - begin);

return length == 0 ? xpath_string() : xpath_string(duplicate_string(begin, length, alloc), true, length);
		}

xpath_string(): _buffer(PUGIXML_TEXT("")), _uses_heap(false), _length_heap(0)
		{
		}

void append(const xpath_string& o, xpath_allocator* alloc)
		{
			// skip empty sources
			if (!*o._buffer) return;

// fast append for constant empty target and constant source
			if (!*_buffer && !_uses_heap && !o._uses_heap)
			{
				_buffer = o._buffer;
			}
			else
			{
				// need to make heap copy
				size_t target_length = length();
				size_t source_length = o.length();
				size_t result_length = target_length + source_length;

// allocate new buffer
				char_t* result = static_cast<char_t*>(alloc->reallocate(_uses_heap ? const_cast<char_t*>(_buffer) : 0, (target_length + 1) * sizeof(char_t), (result_length + 1) * sizeof(char_t)));
				assert(result);

// append first string to the new buffer in case there was no reallocation
				if (!_uses_heap) memcpy(result, _buffer, target_length * sizeof(char_t));

// append second string to the new buffer
				memcpy(result + target_length, o._buffer, source_length * sizeof(char_t));
				result[result_length] = 0;

// finalize
				_buffer = result;
				_uses_heap = true;
				_length_heap = result_length;
			}
		}

const char_t* c_str() const
		{
			return _buffer;
		}

size_t length() const
		{
			return _uses_heap ? _length_heap : strlength(_buffer);
		}

char_t* data(xpath_allocator* alloc)
		{
			// make private heap copy
			if (!_uses_heap)
			{
				size_t length_ = strlength(_buffer);

_buffer = duplicate_string(_buffer, length_, alloc);
				_uses_heap = true;
				_length_heap = length_;
			}

return const_cast<char_t*>(_buffer);
		}

bool empty() const
		{
			return *_buffer == 0;
		}

bool operator==(const xpath_string& o) const
		{
			return strequal(_buffer, o._buffer);
		}

bool operator!=(const xpath_string& o) const
		{
			return !strequal(_buffer, o._buffer);
		}

bool uses_heap() const
		{
			return _uses_heap;
		}
	};
PUGI__NS_END

PUGI__NS_BEGIN
	PUGI__FN bool starts_with(const char_t* string, const char_t* pattern)
	{
		while (*pattern && *string == *pattern)
		{
			string++;
			pattern++;
		}

return *pattern == 0;
	}

PUGI__FN const char_t* find_char(const char_t* s, char_t c)
	{
	#ifdef PUGIXML_WCHAR_MODE
		return wcschr(s, c);
	#else
		return strchr(s, c);
	#endif
	}

PUGI__FN const char_t* find_substring(const char_t* s, const char_t* p)
	{
	#ifdef PUGIXML_WCHAR_MODE
		// MSVC6 wcsstr bug workaround (if s is empty it always returns 0)
		return (*p == 0) ? s : wcsstr(s, p);
	#else
		return strstr(s, p);
	#endif
	}

// Converts symbol to lower case, if it is an ASCII one
	PUGI__FN char_t tolower_ascii(char_t ch)
	{
		return static_cast<unsigned int>(ch - 'A') < 26 ? static_cast<char_t>(ch | ' ') : ch;
	}

PUGI__FN xpath_string string_value(const xpath_node& na, xpath_allocator* alloc)
	{
		if (na.attribute())
			return xpath_string::from_const(na.attribute().value());
		else
		{
			xml_node n = na.node();

switch (n.type())
			{
			case node_pcdata:
			case node_cdata:
			case node_comment:
			case node_pi:
				return xpath_string::from_const(n.value());

case node_document:
			case node_element:
			{
				xpath_string result;

// element nodes can have value if parse_embed_pcdata was used
				if (n.value()[0])
					result.append(xpath_string::from_const(n.value()), alloc);

xml_node cur = n.first_child();

while (cur && cur != n)
				{
					if (cur.type() == node_pcdata || cur.type() == node_cdata)
						result.append(xpath_string::from_const(cur.value()), alloc);

if (cur.first_child())
						cur = cur.first_child();
					else if (cur.next_sibling())
						cur = cur.next_sibling();
					else
					{
						while (!cur.next_sibling() && cur != n)
							cur = cur.parent();

if (cur != n) cur = cur.next_sibling();
					}
				}

return result;
			}

default:
				return xpath_string();
			}
		}
	}

PUGI__FN bool node_is_before_sibling(xml_node_struct* ln, xml_node_struct* rn)
	{
		assert(ln->parent == rn->parent);

// there is no common ancestor (the shared parent is null), nodes are from different documents
		if (!ln->parent) return ln < rn;

// determine sibling order
		xml_node_struct* ls = ln;
		xml_node_struct* rs = rn;

while (ls && rs)
		{
			if (ls == rn) return true;
			if (rs == ln) return false;

ls = ls->next_sibling;
			rs = rs->next_sibling;
		}

// if rn sibling chain ended ln must be before rn
		return !rs;
	}

PUGI__FN bool node_is_before(xml_node_struct* ln, xml_node_struct* rn)
	{
		// find common ancestor at the same depth, if any
		xml_node_struct* lp = ln;
		xml_node_struct* rp = rn;

while (lp && rp && lp->parent != rp->parent)
		{
			lp = lp->parent;
			rp = rp->parent;
		}

// parents are the same!
		if (lp && rp) return node_is_before_sibling(lp, rp);

// nodes are at different depths, need to normalize heights
		bool left_higher = !lp;

while (lp)
		{
			lp = lp->parent;
			ln = ln->parent;
		}

while (rp)
		{
			rp = rp->parent;
			rn = rn->parent;
		}

// one node is the ancestor of the other
		if (ln == rn) return left_higher;

// find common ancestor... again
		while (ln->parent != rn->parent)
		{
			ln = ln->parent;
			rn = rn->parent;
		}

return node_is_before_sibling(ln, rn);
	}

PUGI__FN bool node_is_ancestor(xml_node_struct* parent, xml_node_struct* node)
	{
		while (node && node != parent) node = node->parent;

return parent && node == parent;
	}

PUGI__FN const void* document_buffer_order(const xpath_node& xnode)
	{
		xml_node_struct* node = xnode.node().internal_object();

if (node)
		{
			if ((get_document(node).header & xml_memory_page_contents_shared_mask) == 0)
			{
				if (node->name && (node->header & impl::xml_memory_page_name_allocated_or_shared_mask) == 0) return node->name;
				if (node->value && (node->header & impl::xml_memory_page_value_allocated_or_shared_mask) == 0) return node->value;
			}

return 0;
		}

xml_attribute_struct* attr = xnode.attribute().internal_object();

if (attr)
		{
			if ((get_document(attr).header & xml_memory_page_contents_shared_mask) == 0)
			{
				if ((attr->header & impl::xml_memory_page_name_allocated_or_shared_mask) == 0) return attr->name;
				if ((attr->header & impl::xml_memory_page_value_allocated_or_shared_mask) == 0) return attr->value;
			}

return 0;
		}

return 0;
	}

struct document_order_comparator
	{
		bool operator()(const xpath_node& lhs, const xpath_node& rhs) const
		{
			// optimized document order based check
			const void* lo = document_buffer_order(lhs);
			const void* ro = document_buffer_order(rhs);

if (lo && ro) return lo < ro;

// slow comparison
			xml_node ln = lhs.node(), rn = rhs.node();

// compare attributes
			if (lhs.attribute() && rhs.attribute())
			{
				// shared parent
				if (lhs.parent() == rhs.parent())
				{
					// determine sibling order
					for (xml_attribute a = lhs.attribute(); a; a = a.next_attribute())
						if (a == rhs.attribute())
							return true;

return false;
				}

// compare attribute parents
				ln = lhs.parent();
				rn = rhs.parent();
			}
			else if (lhs.attribute())
			{
				// attributes go after the parent element
				if (lhs.parent() == rhs.node()) return false;

ln = lhs.parent();
			}
			else if (rhs.attribute())
			{
				// attributes go after the parent element
				if (rhs.parent() == lhs.node()) return true;

rn = rhs.parent();
			}

if (ln == rn) return false;

if (!ln || !rn) return ln < rn;

return node_is_before(ln.internal_object(), rn.internal_object());
		}
	};

struct duplicate_comparator
	{
		bool operator()(const xpath_node& lhs, const xpath_node& rhs) const
		{
			if (lhs.attribute()) return rhs.attribute() ? lhs.attribute() < rhs.attribute() : true;
			else return rhs.attribute() ? false : lhs.node() < rhs.node();
		}
	};

PUGI__FN double gen_nan()
	{
	#if defined(__STDC_IEC_559__) || ((FLT_RADIX - 0 == 2) && (FLT_MAX_EXP - 0 == 128) && (FLT_MANT_DIG - 0 == 24))
		PUGI__STATIC_ASSERT(sizeof(float) == sizeof(uint32_t));
		typedef uint32_t UI; // BCC5 workaround
		union { float f; UI i; } u;
		u.i = 0x7fc00000;
		return u.f;
	#else
		// fallback
		const volatile double zero = 0.0;
		return zero / zero;
	#endif
	}

PUGI__FN bool is_nan(double value)
	{
	#if defined(PUGI__MSVC_CRT_VERSION) || defined(__BORLANDC__)
		return !!_isnan(value);
	#elif defined(fpclassify) && defined(FP_NAN)
		return fpclassify(value) == FP_NAN;
	#else
		// fallback
		const volatile double v = value;
		return v != v;
	#endif
	}

PUGI__FN const char_t* convert_number_to_string_special(double value)
	{
	#if defined(PUGI__MSVC_CRT_VERSION) || defined(__BORLANDC__)
		if (_finite(value)) return (value == 0) ? PUGIXML_TEXT("0") : 0;
		if (_isnan(value)) return PUGIXML_TEXT("NaN");
		return value > 0 ? PUGIXML_TEXT("Infinity") : PUGIXML_TEXT("-Infinity");
	#elif defined(fpclassify) && defined(FP_NAN) && defined(FP_INFINITE) && defined(FP_ZERO)
		switch (fpclassify(value))
		{
		case FP_NAN:
			return PUGIXML_TEXT("NaN");

case FP_INFINITE:
			return value > 0 ? PUGIXML_TEXT("Infinity") : PUGIXML_TEXT("-Infinity");

case FP_ZERO:
			return PUGIXML_TEXT("0");

default:
			return 0;
		}
	#else
		// fallback
		const volatile double v = value;

if (v == 0) return PUGIXML_TEXT("0");
		if (v != v) return PUGIXML_TEXT("NaN");
		if (v * 2 == v) return value > 0 ? PUGIXML_TEXT("Infinity") : PUGIXML_TEXT("-Infinity");
		return 0;
	#endif
	}

PUGI__FN bool convert_number_to_boolean(double value)
	{
		return (value != 0 && !is_nan(value));
	}

PUGI__FN void truncate_zeros(char* begin, char* end)
	{
		while (begin != end && end[-1] == '0') end--;

*end = 0;
	}

// gets mantissa digits in the form of 0.xxxxx with 0. implied and the exponent
#if defined(PUGI__MSVC_CRT_VERSION) && PUGI__MSVC_CRT_VERSION >= 1400 && !defined(_WIN32_WCE)
	PUGI__FN void convert_number_to_mantissa_exponent(double value, char* buffer, size_t buffer_size, char** out_mantissa, int* out_exponent)
	{
		// get base values
		int sign, exponent;
		_ecvt_s(buffer, buffer_size, value, DBL_DIG + 1, &exponent, &sign);

// truncate redundant zeros
		truncate_zeros(buffer, buffer + strlen(buffer));

// fill results
		*out_mantissa = buffer;
		*out_exponent = exponent;
	}
#else
	PUGI__FN void convert_number_to_mantissa_exponent(double value, char* buffer, size_t buffer_size, char** out_mantissa, int* out_exponent)
	{
		// get a scientific notation value with IEEE DBL_DIG decimals
		sprintf(buffer, "%.*e", DBL_DIG, value);
		assert(strlen(buffer) < buffer_size);
		(void)!buffer_size;

// get the exponent (possibly negative)
		char* exponent_string = strchr(buffer, 'e');
		assert(exponent_string);

int exponent = atoi(exponent_string + 1);

// extract mantissa string: skip sign
		char* mantissa = buffer[0] == '-' ? buffer + 1 : buffer;
		assert(mantissa[0] != '0' && mantissa[1] == '.');

// divide mantissa by 10 to eliminate integer part
		mantissa[1] = mantissa[0];
		mantissa++;
		exponent++;

// remove extra mantissa digits and zero-terminate mantissa
		truncate_zeros(mantissa, exponent_string);

// fill results
		*out_mantissa = mantissa;
		*out_exponent = exponent;
	}
#endif

PUGI__FN xpath_string convert_number_to_string(double value, xpath_allocator* alloc)
	{
		// try special number conversion
		const char_t* special = convert_number_to_string_special(value);
		if (special) return xpath_string::from_const(special);

// get mantissa + exponent form
		char mantissa_buffer[32];

char* mantissa;
		int exponent;
		convert_number_to_mantissa_exponent(value, mantissa_buffer, sizeof(mantissa_buffer), &mantissa, &exponent);

// allocate a buffer of suitable length for the number
		size_t result_size = strlen(mantissa_buffer) + (exponent > 0 ? exponent : -exponent) + 4;
		char_t* result = static_cast<char_t*>(alloc->allocate(sizeof(char_t) * result_size));
		assert(result);

// make the number!
		char_t* s = result;

// sign
		if (value < 0) *s++ = '-';

// integer part
		if (exponent <= 0)
		{
			*s++ = '0';
		}
		else
		{
			while (exponent > 0)
			{
				assert(*mantissa == 0 || static_cast<unsigned int>(static_cast<unsigned int>(*mantissa) - '0') <= 9);
				*s++ = *mantissa ? *mantissa++ : '0';
				exponent--;
			}
		}

// fractional part
		if (*mantissa)
		{
			// decimal point
			*s++ = '.';

// extra zeroes from negative exponent
			while (exponent < 0)
			{
				*s++ = '0';
				exponent++;
			}

// extra mantissa digits
			while (*mantissa)
			{
				assert(static_cast<unsigned int>(*mantissa - '0') <= 9);
				*s++ = *mantissa++;
			}
		}

// zero-terminate
		assert(s < result + result_size);
		*s = 0;

return xpath_string::from_heap_preallocated(result, s);
	}

PUGI__FN bool check_string_to_number_format(const char_t* string)
	{
		// parse leading whitespace
		while (PUGI__IS_CHARTYPE(*string, ct_space)) ++string;

// parse sign
		if (*string == '-') ++string;

if (!*string) return false;

// if there is no integer part, there should be a decimal part with at least one digit
		if (!PUGI__IS_CHARTYPEX(string[0], ctx_digit) && (string[0] != '.' || !PUGI__IS_CHARTYPEX(string[1], ctx_digit))) return false;

// parse integer part
		while (PUGI__IS_CHARTYPEX(*string, ctx_digit)) ++string;

// parse decimal part
		if (*string == '.')
		{
			++string;

while (PUGI__IS_CHARTYPEX(*string, ctx_digit)) ++string;
		}

// parse trailing whitespace
		while (PUGI__IS_CHARTYPE(*string, ct_space)) ++string;

return *string == 0;
	}

PUGI__FN double convert_string_to_number(const char_t* string)
	{
		// check string format
		if (!check_string_to_number_format(string)) return gen_nan();

// parse string
	#ifdef PUGIXML_WCHAR_MODE
		return wcstod(string, 0);
	#else
		return strtod(string, 0);
	#endif
	}

PUGI__FN bool convert_string_to_number_scratch(char_t (&buffer)[32], const char_t* begin, const char_t* end, double* out_result)
	{
		size_t length = static_cast<size_t>(end - begin);
		char_t* scratch = buffer;

if (length >= sizeof(buffer) / sizeof(buffer[0]))
		{
			// need to make dummy on-heap copy
			scratch = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
			if (!scratch) return false;
		}

// copy string to zero-terminated buffer and perform conversion
		memcpy(scratch, begin, length * sizeof(char_t));
		scratch[length] = 0;

*out_result = convert_string_to_number(scratch);

// free dummy buffer
		if (scratch != buffer) xml_memory::deallocate(scratch);

return true;
	}

PUGI__FN double round_nearest(double value)
	{
		return floor(value + 0.5);
	}

PUGI__FN double round_nearest_nzero(double value)
	{
		// same as round_nearest, but returns -0 for [-0.5, -0]
		// ceil is used to differentiate between +0 and -0 (we return -0 for [-0.5, -0] and +0 for +0)
		return (value >= -0.5 && value <= 0) ? ceil(value) : floor(value + 0.5);
	}

PUGI__FN const char_t* qualified_name(const xpath_node& node)
	{
		return node.attribute() ? node.attribute().name() : node.node().name();
	}

PUGI__FN const char_t* local_name(const xpath_node& node)
	{
		const char_t* name = qualified_name(node);
		const char_t* p = find_char(name, ':');

return p ? p + 1 : name;
	}

struct namespace_uri_predicate
	{
		const char_t* prefix;
		size_t prefix_length;

namespace_uri_predicate(const char_t* name)
		{
			const char_t* pos = find_char(name, ':');

prefix = pos ? name : 0;
			prefix_length = pos ? static_cast<size_t>(pos - name) : 0;
		}

bool operator()(xml_attribute a) const
		{
			const char_t* name = a.name();

if (!starts_with(name, PUGIXML_TEXT("xmlns"))) return false;

return prefix ? name[5] == ':' && strequalrange(name + 6, prefix, prefix_length) : name[5] == 0;
		}
	};

PUGI__FN const char_t* namespace_uri(xml_node node)
	{
		namespace_uri_predicate pred = node.name();

xml_node p = node;

while (p)
		{
			xml_attribute a = p.find_attribute(pred);

if (a) return a.value();

p = p.parent();
		}

return PUGIXML_TEXT("");
	}

PUGI__FN const char_t* namespace_uri(xml_attribute attr, xml_node parent)
	{
		namespace_uri_predicate pred = attr.name();

// Default namespace does not apply to attributes
		if (!pred.prefix) return PUGIXML_TEXT("");

xml_node p = parent;

while (p)
		{
			xml_attribute a = p.find_attribute(pred);

if (a) return a.value();

p = p.parent();
		}

return PUGIXML_TEXT("");
	}

PUGI__FN const char_t* namespace_uri(const xpath_node& node)
	{
		return node.attribute() ? namespace_uri(node.attribute(), node.parent()) : namespace_uri(node.node());
	}

PUGI__FN char_t* normalize_space(char_t* buffer)
	{
		char_t* write = buffer;

for (char_t* it = buffer; *it; )
		{
			char_t ch = *it++;

if (PUGI__IS_CHARTYPE(ch, ct_space))
			{
				// replace whitespace sequence with single space
				while (PUGI__IS_CHARTYPE(*it, ct_space)) it++;

// avoid leading spaces
				if (write != buffer) *write++ = ' ';
			}
			else *write++ = ch;
		}

// remove trailing space
		if (write != buffer && PUGI__IS_CHARTYPE(write[-1], ct_space)) write--;

// zero-terminate
		*write = 0;

return write;
	}

PUGI__FN char_t* translate(char_t* buffer, const char_t* from, const char_t* to, size_t to_length)
	{
		char_t* write = buffer;

while (*buffer)
		{
			PUGI__DMC_VOLATILE char_t ch = *buffer++;

const char_t* pos = find_char(from, ch);

if (!pos)
				*write++ = ch; // do not process
			else if (static_cast<size_t>(pos - from) < to_length)
				*write++ = to[pos - from]; // replace
		}

// zero-terminate
		*write = 0;

return write;
	}

PUGI__FN unsigned char* translate_table_generate(xpath_allocator* alloc, const char_t* from, const char_t* to)
	{
		unsigned char table[128] = {0};

while (*from)
		{
			unsigned int fc = static_cast<unsigned int>(*from);
			unsigned int tc = static_cast<unsigned int>(*to);

if (fc >= 128 || tc >= 128)
				return 0;

// code=128 means "skip character"
			if (!table[fc])
				table[fc] = static_cast<unsigned char>(tc ? tc : 128);

from++;
			if (tc) to++;
		}

for (int i = 0; i < 128; ++i)
			if (!table[i])
				table[i] = static_cast<unsigned char>(i);

void* result = alloc->allocate_nothrow(sizeof(table));

if (result)
		{
			memcpy(result, table, sizeof(table));
		}

return static_cast<unsigned char*>(result);
	}

PUGI__FN char_t* translate_table(char_t* buffer, const unsigned char* table)
	{
		char_t* write = buffer;

while (*buffer)
		{
			char_t ch = *buffer++;
			unsigned int index = static_cast<unsigned int>(ch);

if (index < 128)
			{
				unsigned char code = table[index];

// code=128 means "skip character" (table size is 128 so 128 can be a special value)
				// this code skips these characters without extra branches
				*write = static_cast<char_t>(code);
				write += 1 - (code >> 7);
			}
			else
			{
				*write++ = ch;
			}
		}

// zero-terminate
		*write = 0;

return write;
	}

inline bool is_xpath_attribute(const char_t* name)
	{
		return !(starts_with(name, PUGIXML_TEXT("xmlns")) && (name[5] == 0 || name[5] == ':'));
	}

struct xpath_variable_boolean: xpath_variable
	{
		xpath_variable_boolean(): xpath_variable(xpath_type_boolean), value(false)
		{
		}

bool value;
		char_t name[1];
	};

struct xpath_variable_number: xpath_variable
	{
		xpath_variable_number(): xpath_variable(xpath_type_number), value(0)
		{
		}

double value;
		char_t name[1];
	};

struct xpath_variable_string: xpath_variable
	{
		xpath_variable_string(): xpath_variable(xpath_type_string), value(0)
		{
		}

~xpath_variable_string()
		{
			if (value) xml_memory::deallocate(value);
		}

char_t* value;
		char_t name[1];
	};

struct xpath_variable_node_set: xpath_variable
	{
		xpath_variable_node_set(): xpath_variable(xpath_type_node_set)
		{
		}

xpath_node_set value;
		char_t name[1];
	};

static const xpath_node_set dummy_node_set;

PUGI__FN unsigned int hash_string(const char_t* str)
	{
		// Jenkins one-at-a-time hash (http://en.wikipedia.org/wiki/Jenkins_hash_function#one-at-a-time)
		unsigned int result = 0;

while (*str)
		{
			result += static_cast<unsigned int>(*str++);
			result += result << 10;
			result ^= result >> 6;
		}

result += result << 3;
		result ^= result >> 11;
		result += result << 15;

return result;
	}

template <typename T> PUGI__FN T* new_xpath_variable(const char_t* name)
	{
		size_t length = strlength(name);
		if (length == 0) return 0; // empty variable names are invalid

// $$ we can't use offsetof(T, name) because T is non-POD, so we just allocate additional length characters
		void* memory = xml_memory::allocate(sizeof(T) + length * sizeof(char_t));
		if (!memory) return 0;

T* result = new (memory) T();

memcpy(result->name, name, (length + 1) * sizeof(char_t));

return result;
	}

PUGI__FN xpath_variable* new_xpath_variable(xpath_value_type type, const char_t* name)
	{
		switch (type)
		{
		case xpath_type_node_set:
			return new_xpath_variable<xpath_variable_node_set>(name);

case xpath_type_number:
			return new_xpath_variable<xpath_variable_number>(name);

case xpath_type_string:
			return new_xpath_variable<xpath_variable_string>(name);

case xpath_type_boolean:
			return new_xpath_variable<xpath_variable_boolean>(name);

default:
			return 0;
		}
	}

template <typename T> PUGI__FN void delete_xpath_variable(T* var)
	{
		var->~T();
		xml_memory::deallocate(var);
	}

PUGI__FN void delete_xpath_variable(xpath_value_type type, xpath_variable* var)
	{
		switch (type)
		{
		case xpath_type_node_set:
			delete_xpath_variable(static_cast<xpath_variable_node_set*>(var));
			break;

case xpath_type_number:
			delete_xpath_variable(static_cast<xpath_variable_number*>(var));
			break;

case xpath_type_string:
			delete_xpath_variable(static_cast<xpath_variable_string*>(var));
			break;

case xpath_type_boolean:
			delete_xpath_variable(static_cast<xpath_variable_boolean*>(var));
			break;

default:
			assert(false && "Invalid variable type");
		}
	}

PUGI__FN bool copy_xpath_variable(xpath_variable* lhs, const xpath_variable* rhs)
	{
		switch (rhs->type())
		{
		case xpath_type_node_set:
			return lhs->set(static_cast<const xpath_variable_node_set*>(rhs)->value);

case xpath_type_number:
			return lhs->set(static_cast<const xpath_variable_number*>(rhs)->value);

case xpath_type_string:
			return lhs->set(static_cast<const xpath_variable_string*>(rhs)->value);

case xpath_type_boolean:
			return lhs->set(static_cast<const xpath_variable_boolean*>(rhs)->value);

default:
			assert(false && "Invalid variable type");
			return false;
		}
	}

PUGI__FN bool get_variable_scratch(char_t (&buffer)[32], xpath_variable_set* set, const char_t* begin, const char_t* end, xpath_variable** out_result)
	{
		size_t length = static_cast<size_t>(end - begin);
		char_t* scratch = buffer;

// copy string to zero-terminated buffer and perform lookup
		memcpy(scratch, begin, length * sizeof(char_t));
		scratch[length] = 0;

*out_result = set->get(scratch);

// free dummy buffer
		if (scratch != buffer) xml_memory::deallocate(scratch);

return true;
	}
PUGI__NS_END

// Internal node set class
PUGI__NS_BEGIN
	PUGI__FN xpath_node_set::type_t xpath_get_order(const xpath_node* begin, const xpath_node* end)
	{
		if (end - begin < 2)
			return xpath_node_set::type_sorted;

document_order_comparator cmp;

bool first = cmp(begin[0], begin[1]);

for (const xpath_node* it = begin + 1; it + 1 < end; ++it)
			if (cmp(it[0], it[1]) != first)
				return xpath_node_set::type_unsorted;

return first ? xpath_node_set::type_sorted : xpath_node_set::type_sorted_reverse;
	}

PUGI__FN xpath_node_set::type_t xpath_sort(xpath_node* begin, xpath_node* end, xpath_node_set::type_t type, bool rev)
	{
		xpath_node_set::type_t order = rev ? xpath_node_set::type_sorted_reverse : xpath_node_set::type_sorted;

if (type == xpath_node_set::type_unsorted)
		{
			xpath_node_set::type_t sorted = xpath_get_order(begin, end);

if (sorted == xpath_node_set::type_unsorted)
			{
				sort(begin, end, document_order_comparator());

type = xpath_node_set::type_sorted;
			}
			else
				type = sorted;
		}

if (type != order) reverse(begin, end);

return order;
	}

PUGI__FN xpath_node xpath_first(const xpath_node* begin, const xpath_node* end, xpath_node_set::type_t type)
	{
		if (begin == end) return xpath_node();

switch (type)
		{
		case xpath_node_set::type_sorted:
			return *begin;

case xpath_node_set::type_sorted_reverse:
			return *(end - 1);

case xpath_node_set::type_unsorted:
			return *min_element(begin, end, document_order_comparator());

default:
			assert(false && "Invalid node set type");
			return xpath_node();
		}
	}

class xpath_node_set_raw
	{
		xpath_node_set::type_t _type;

xpath_node* _begin;
		xpath_node* _end;
		xpath_node* _eos;

public:
		xpath_node_set_raw(): _type(xpath_node_set::type_unsorted), _begin(0), _end(0), _eos(0)
		{
		}

xpath_node* begin() const
		{
			return _begin;
		}

xpath_node* end() const
		{
			return _end;
		}

bool empty() const
		{
			return _begin == _end;
		}

size_t size() const
		{
			return static_cast<size_t>(_end - _begin);
		}

xpath_node first() const
		{
			return xpath_first(_begin, _end, _type);
		}

void push_back_grow(const xpath_node& node, xpath_allocator* alloc);

void push_back(const xpath_node& node, xpath_allocator* alloc)
		{
			if (_end != _eos)
				*_end++ = node;
			else
				push_back_grow(node, alloc);
		}

void append(const xpath_node* begin_, const xpath_node* end_, xpath_allocator* alloc)
		{
			if (begin_ == end_) return;

size_t size_ = static_cast<size_t>(_end - _begin);
			size_t capacity = static_cast<size_t>(_eos - _begin);
			size_t count = static_cast<size_t>(end_ - begin_);

if (size_ + count > capacity)
			{
				// reallocate the old array or allocate a new one
				xpath_node* data = static_cast<xpath_node*>(alloc->reallocate(_begin, capacity * sizeof(xpath_node), (size_ + count) * sizeof(xpath_node)));
				assert(data);

// finalize
				_begin = data;
				_end = data + size_;
				_eos = data + size_ + count;
			}

memcpy(_end, begin_, count * sizeof(xpath_node));
			_end += count;
		}

void sort_do()
		{
			_type = xpath_sort(_begin, _end, _type, false);
		}

void truncate(xpath_node* pos)
		{
			assert(_begin <= pos && pos <= _end);

_end = pos;
		}

void remove_duplicates()
		{
			if (_type == xpath_node_set::type_unsorted)
				sort(_begin, _end, duplicate_comparator());

_end = unique(_begin, _end);
		}

xpath_node_set::type_t type() const
		{
			return _type;
		}

void set_type(xpath_node_set::type_t value)
		{
			_type = value;
		}
	};

PUGI__FN_NO_INLINE void xpath_node_set_raw::push_back_grow(const xpath_node& node, xpath_allocator* alloc)
	{
		size_t capacity = static_cast<size_t>(_eos - _begin);

// get new capacity (1.5x rule)
		size_t new_capacity = capacity + capacity / 2 + 1;

// reallocate the old array or allocate a new one
		xpath_node* data = static_cast<xpath_node*>(alloc->reallocate(_begin, capacity * sizeof(xpath_node), new_capacity * sizeof(xpath_node)));
		assert(data);

// finalize
		_begin = data;
		_end = data + capacity;
		_eos = data + new_capacity;

// push
		*_end++ = node;
	}
PUGI__NS_END

PUGI__NS_BEGIN
	struct xpath_context
	{
		xpath_node n;
		size_t position, size;

xpath_context(const xpath_node& n_, size_t position_, size_t size_): n(n_), position(position_), size(size_)
		{
		}
	};

enum lexeme_t
	{
		lex_none = 0,
		lex_equal,
		lex_not_equal,
		lex_less,
		lex_greater,
		lex_less_or_equal,
		lex_greater_or_equal,
		lex_plus,
		lex_minus,
		lex_multiply,
		lex_union,
		lex_var_ref,
		lex_open_brace,
		lex_close_brace,
		lex_quoted_string,
		lex_number,
		lex_slash,
		lex_double_slash,
		lex_open_square_brace,
		lex_close_square_brace,
		lex_string,
		lex_comma,
		lex_axis_attribute,
		lex_dot,
		lex_double_dot,
		lex_double_colon,
		lex_eof
	};

struct xpath_lexer_string
	{
		const char_t* begin;
		const char_t* end;

xpath_lexer_string(): begin(0), end(0)
		{
		}

bool operator==(const char_t* other) const
		{
			size_t length = static_cast<size_t>(end - begin);

return strequalrange(other, begin, length);
		}
	};

class xpath_lexer
	{
		const char_t* _cur;
		const char_t* _cur_lexeme_pos;
		xpath_lexer_string _cur_lexeme_contents;

lexeme_t _cur_lexeme;

public:
		explicit xpath_lexer(const char_t* query): _cur(query)
		{
			next();
		}

const char_t* state() const
		{
			return _cur;
		}

void next()
		{
			const char_t* cur = _cur;

while (PUGI__IS_CHARTYPE(*cur, ct_space)) ++cur;

// save lexeme position for error reporting
			_cur_lexeme_pos = cur;

switch (*cur)
			{
			case 0:
				_cur_lexeme = lex_eof;
				break;

case '>':
				if (*(cur+1) == '=')
				{
					cur += 2;
					_cur_lexeme = lex_greater_or_equal;
				}
				else
				{
					cur += 1;
					_cur_lexeme = lex_greater;
				}
				break;

case '<':
				if (*(cur+1) == '=')
				{
					cur += 2;
					_cur_lexeme = lex_less_or_equal;
				}
				else
				{
					cur += 1;
					_cur_lexeme = lex_less;
				}
				break;

case '!':
				if (*(cur+1) == '=')
				{
					cur += 2;
					_cur_lexeme = lex_not_equal;
				}
				else
				{
					_cur_lexeme = lex_none;
				}
				break;

case '=':
				cur += 1;
				_cur_lexeme = lex_equal;

break;

case '+':
				cur += 1;
				_cur_lexeme = lex_plus;

break;

case '-':
				cur += 1;
				_cur_lexeme = lex_minus;

break;

case '*':
				cur += 1;
				_cur_lexeme = lex_multiply;

break;

case '|':
				cur += 1;
				_cur_lexeme = lex_union;

break;

case '$':
				cur += 1;

if (PUGI__IS_CHARTYPEX(*cur, ctx_start_symbol))
				{
					_cur_lexeme_contents.begin = cur;

while (PUGI__IS_CHARTYPEX(*cur, ctx_symbol)) cur++;

if (cur[0] == ':' && PUGI__IS_CHARTYPEX(cur[1], ctx_symbol)) // qname
					{
						cur++; // :

while (PUGI__IS_CHARTYPEX(*cur, ctx_symbol)) cur++;
					}

_cur_lexeme_contents.end = cur;

_cur_lexeme = lex_var_ref;
				}
				else
				{
					_cur_lexeme = lex_none;
				}

break;

case '(':
				cur += 1;
				_cur_lexeme = lex_open_brace;

break;

case ')':
				cur += 1;
				_cur_lexeme = lex_close_brace;

break;

case '[':
				cur += 1;
				_cur_lexeme = lex_open_square_brace;

break;

case ']':
				cur += 1;
				_cur_lexeme = lex_close_square_brace;

break;

case ',':
				cur += 1;
				_cur_lexeme = lex_comma;

break;

case '/':
				if (*(cur+1) == '/')
				{
					cur += 2;
					_cur_lexeme = lex_double_slash;
				}
				else
				{
					cur += 1;
					_cur_lexeme = lex_slash;
				}
				break;

case '.':
				if (*(cur+1) == '.')
				{
					cur += 2;
					_cur_lexeme = lex_double_dot;
				}
				else if (PUGI__IS_CHARTYPEX(*(cur+1), ctx_digit))
				{
					_cur_lexeme_contents.begin = cur; // .

++cur;

while (PUGI__IS_CHARTYPEX(*cur, ctx_digit)) cur++;

_cur_lexeme_contents.end = cur;

_cur_lexeme = lex_number;
				}
				else
				{
					cur += 1;
					_cur_lexeme = lex_dot;
				}
				break;

case '@':
				cur += 1;
				_cur_lexeme = lex_axis_attribute;

break;

case '"':
			case '\'':
			{
				char_t terminator = *cur;

++cur;

_cur_lexeme_contents.begin = cur;
				while (*cur && *cur != terminator) cur++;
				_cur_lexeme_contents.end = cur;

if (!*cur)
					_cur_lexeme = lex_none;
				else
				{
					cur += 1;
					_cur_lexeme = lex_quoted_string;
				}

break;
			}

case ':':
				if (*(cur+1) == ':')
				{
					cur += 2;
					_cur_lexeme = lex_double_colon;
				}
				else
				{
					_cur_lexeme = lex_none;
				}
				break;

default:
				if (PUGI__IS_CHARTYPEX(*cur, ctx_digit))
				{
					_cur_lexeme_contents.begin = cur;

while (PUGI__IS_CHARTYPEX(*cur, ctx_digit)) cur++;

if (*cur == '.')
					{
						cur++;

while (PUGI__IS_CHARTYPEX(*cur, ctx_digit)) cur++;
					}

_cur_lexeme_contents.end = cur;

_cur_lexeme = lex_number;
				}
				else if (PUGI__IS_CHARTYPEX(*cur, ctx_start_symbol))
				{
					_cur_lexeme_contents.begin = cur;

while (PUGI__IS_CHARTYPEX(*cur, ctx_symbol)) cur++;

if (cur[0] == ':')
					{
						if (cur[1] == '*') // namespace test ncname:*
						{
							cur += 2; // :*
						}
						else if (PUGI__IS_CHARTYPEX(cur[1], ctx_symbol)) // namespace test qname
						{
							cur++; // :

while (PUGI__IS_CHARTYPEX(*cur, ctx_symbol)) cur++;
						}
					}

_cur_lexeme_contents.end = cur;

_cur_lexeme = lex_string;
				}
				else
				{
					_cur_lexeme = lex_none;
				}
			}

_cur = cur;
		}

lexeme_t current() const
		{
			return _cur_lexeme;
		}

const char_t* current_pos() const
		{
			return _cur_lexeme_pos;
		}

const xpath_lexer_string& contents() const
		{
			assert(_cur_lexeme == lex_var_ref || _cur_lexeme == lex_number || _cur_lexeme == lex_string || _cur_lexeme == lex_quoted_string);

return _cur_lexeme_contents;
		}
	};

enum ast_type_t
	{
		ast_unknown,
		ast_op_or,						// left or right
		ast_op_and,						// left and right
		ast_op_equal,					// left = right
		ast_op_not_equal,				// left != right
		ast_op_less,					// left < right
		ast_op_greater,					// left > right
		ast_op_less_or_equal,			// left <= right
		ast_op_greater_or_equal,		// left >= right
		ast_op_add,						// left + right
		ast_op_subtract,				// left - right
		ast_op_multiply,				// left * right
		ast_op_divide,					// left / right
		ast_op_mod,						// left % right
		ast_op_negate,					// left - right
		ast_op_union,					// left | right
		ast_predicate,					// apply predicate to set; next points to next predicate
		ast_filter,						// select * from left where right
		ast_string_constant,			// string constant
		ast_number_constant,			// number constant
		ast_variable,					// variable
		ast_func_last,					// last()
		ast_func_position,				// position()
		ast_func_count,					// count(left)
		ast_func_id,					// id(left)
		ast_func_local_name_0,			// local-name()
		ast_func_local_name_1,			// local-name(left)
		ast_func_namespace_uri_0,		// namespace-uri()
		ast_func_namespace_uri_1,		// namespace-uri(left)
		ast_func_name_0,				// name()
		ast_func_name_1,				// name(left)
		ast_func_string_0,				// string()
		ast_func_string_1,				// string(left)
		ast_func_concat,				// concat(left, right, siblings)
		ast_func_starts_with,			// starts_with(left, right)
		ast_func_contains,				// contains(left, right)
		ast_func_substring_before,		// substring-before(left, right)
		ast_func_substring_after,		// substring-after(left, right)
		ast_func_substring_2,			// substring(left, right)
		ast_func_substring_3,			// substring(left, right, third)
		ast_func_string_length_0,		// string-length()
		ast_func_string_length_1,		// string-length(left)
		ast_func_normalize_space_0,		// normalize-space()
		ast_func_normalize_space_1,		// normalize-space(left)
		ast_func_translate,				// translate(left, right, third)
		ast_func_boolean,				// boolean(left)
		ast_func_not,					// not(left)
		ast_func_true,					// true()
		ast_func_false,					// false()
		ast_func_lang,					// lang(left)
		ast_func_number_0,				// number()
		ast_func_number_1,				// number(left)
		ast_func_sum,					// sum(left)
		ast_func_floor,					// floor(left)
		ast_func_ceiling,				// ceiling(left)
		ast_func_round,					// round(left)
		ast_step,						// process set left with step
		ast_step_root,					// select root node

ast_opt_translate_table,		// translate(left, right, third) where right/third are constants
		ast_opt_compare_attribute		// @name = 'string'
	};

enum axis_t
	{
		axis_ancestor,
		axis_ancestor_or_self,
		axis_attribute,
		axis_child,
		axis_descendant,
		axis_descendant_or_self,
		axis_following,
		axis_following_sibling,
		axis_namespace,
		axis_parent,
		axis_preceding,
		axis_preceding_sibling,
		axis_self
	};

enum nodetest_t
	{
		nodetest_none,
		nodetest_name,
		nodetest_type_node,
		nodetest_type_comment,
		nodetest_type_pi,
		nodetest_type_text,
		nodetest_pi,
		nodetest_all,
		nodetest_all_in_namespace
	};

enum predicate_t
	{
		predicate_default,
		predicate_posinv,
		predicate_constant,
		predicate_constant_one
	};

enum nodeset_eval_t
	{
		nodeset_eval_all,
		nodeset_eval_any,
		nodeset_eval_first
	};

template <axis_t N> struct axis_to_type
	{
		static const axis_t axis;
	};

template <axis_t N> const axis_t axis_to_type<N>::axis = N;

class xpath_ast_node
	{
	private:
		// node type
		char _type;
		char _rettype;

// for ast_step
		char _axis;

// for ast_step/ast_predicate/ast_filter
		char _test;

// tree node structure
		xpath_ast_node* _left;
		xpath_ast_node* _right;
		xpath_ast_node* _next;

union
		{
			// value for ast_string_constant
			const char_t* string;
			// value for ast_number_constant
			double number;
			// variable for ast_variable
			xpath_variable* variable;
			// node test for ast_step (node name/namespace/node type/pi target)
			const char_t* nodetest;
			// table for ast_opt_translate_table
			const unsigned char* table;
		} _data;

xpath_ast_node(const xpath_ast_node&);
		xpath_ast_node& operator=(const xpath_ast_node&);

template <class Comp> static bool compare_eq(xpath_ast_node* lhs, xpath_ast_node* rhs, const xpath_context& c, const xpath_stack& stack, const Comp& comp)
		{
			xpath_value_type lt = lhs->rettype(), rt = rhs->rettype();

if (lt != xpath_type_node_set && rt != xpath_type_node_set)
			{
				if (lt == xpath_type_boolean || rt == xpath_type_boolean)
					return comp(lhs->eval_boolean(c, stack), rhs->eval_boolean(c, stack));
				else if (lt == xpath_type_number || rt == xpath_type_number)
					return comp(lhs->eval_number(c, stack), rhs->eval_number(c, stack));
				else if (lt == xpath_type_string || rt == xpath_type_string)
				{
					xpath_allocator_capture cr(stack.result);

xpath_string ls = lhs->eval_string(c, stack);
					xpath_string rs = rhs->eval_string(c, stack);

return comp(ls, rs);
				}
			}
			else if (lt == xpath_type_node_set && rt == xpath_type_node_set)
			{
				xpath_allocator_capture cr(stack.result);

xpath_node_set_raw ls = lhs->eval_node_set(c, stack, nodeset_eval_all);
				xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);

for (const xpath_node* li = ls.begin(); li != ls.end(); ++li)
					for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
					{
						xpath_allocator_capture cri(stack.result);

if (comp(string_value(*li, stack.result), string_value(*ri, stack.result)))
							return true;
					}

return false;
			}
			else
			{
				if (lt == xpath_type_node_set)
				{
					swap(lhs, rhs);
					swap(lt, rt);
				}

if (lt == xpath_type_boolean)
					return comp(lhs->eval_boolean(c, stack), rhs->eval_boolean(c, stack));
				else if (lt == xpath_type_number)
				{
					xpath_allocator_capture cr(stack.result);

double l = lhs->eval_number(c, stack);
					xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);

for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
					{
						xpath_allocator_capture cri(stack.result);

if (comp(l, convert_string_to_number(string_value(*ri, stack.result).c_str())))
							return true;
					}

return false;
				}
				else if (lt == xpath_type_string)
				{
					xpath_allocator_capture cr(stack.result);

xpath_string l = lhs->eval_string(c, stack);
					xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);

for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
					{
						xpath_allocator_capture cri(stack.result);

if (comp(l, string_value(*ri, stack.result)))
							return true;
					}

return false;
				}
			}

assert(false && "Wrong types");
			return false;
		}

static bool eval_once(xpath_node_set::type_t type, nodeset_eval_t eval)
		{
			return type == xpath_node_set::type_sorted ? eval != nodeset_eval_all : eval == nodeset_eval_any;
		}

template <class Comp> static bool compare_rel(xpath_ast_node* lhs, xpath_ast_node* rhs, const xpath_context& c, const xpath_stack& stack, const Comp& comp)
		{
			xpath_value_type lt = lhs->rettype(), rt = rhs->rettype();

if (lt != xpath_type_node_set && rt != xpath_type_node_set)
				return comp(lhs->eval_number(c, stack), rhs->eval_number(c, stack));
			else if (lt == xpath_type_node_set && rt == xpath_type_node_set)
			{
				xpath_allocator_capture cr(stack.result);

xpath_node_set_raw ls = lhs->eval_node_set(c, stack, nodeset_eval_all);
				xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);

for (const xpath_node* li = ls.begin(); li != ls.end(); ++li)
				{
					xpath_allocator_capture cri(stack.result);

double l = convert_string_to_number(string_value(*li, stack.result).c_str());

for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
					{
						xpath_allocator_capture crii(stack.result);

if (comp(l, convert_string_to_number(string_value(*ri, stack.result).c_str())))
							return true;
					}
				}

return false;
			}
			else if (lt != xpath_type_node_set && rt == xpath_type_node_set)
			{
				xpath_allocator_capture cr(stack.result);

double l = lhs->eval_number(c, stack);
				xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);

for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
				{
					xpath_allocator_capture cri(stack.result);

if (comp(l, convert_string_to_number(string_value(*ri, stack.result).c_str())))
						return true;
				}

return false;
			}
			else if (lt == xpath_type_node_set && rt != xpath_type_node_set)
			{
				xpath_allocator_capture cr(stack.result);

xpath_node_set_raw ls = lhs->eval_node_set(c, stack, nodeset_eval_all);
				double r = rhs->eval_number(c, stack);

for (const xpath_node* li = ls.begin(); li != ls.end(); ++li)
				{
					xpath_allocator_capture cri(stack.result);

if (comp(convert_string_to_number(string_value(*li, stack.result).c_str()), r))
						return true;
				}

return false;
			}
			else
			{
				assert(false && "Wrong types");
				return false;
			}
		}

static void apply_predicate_boolean(xpath_node_set_raw& ns, size_t first, xpath_ast_node* expr, const xpath_stack& stack, bool once)
		{
			assert(ns.size() >= first);
			assert(expr->rettype() != xpath_type_number);

size_t i = 1;
			size_t size = ns.size() - first;

xpath_node* last = ns.begin() + first;

// remove_if... or well, sort of
			for (xpath_node* it = last; it != ns.end(); ++it, ++i)
			{
				xpath_context c(*it, i, size);

if (expr->eval_boolean(c, stack))
				{
					*last++ = *it;

if (once) break;
				}
			}

ns.truncate(last);
		}

static void apply_predicate_number(xpath_node_set_raw& ns, size_t first, xpath_ast_node* expr, const xpath_stack& stack, bool once)
		{
			assert(ns.size() >= first);
			assert(expr->rettype() == xpath_type_number);

size_t i = 1;
			size_t size = ns.size() - first;

xpath_node* last = ns.begin() + first;

// remove_if... or well, sort of
			for (xpath_node* it = last; it != ns.end(); ++it, ++i)
			{
				xpath_context c(*it, i, size);

if (expr->eval_number(c, stack) == i)
				{
					*last++ = *it;

if (once) break;
				}
			}

ns.truncate(last);
		}

static void apply_predicate_number_const(xpath_node_set_raw& ns, size_t first, xpath_ast_node* expr, const xpath_stack& stack)
		{
			assert(ns.size() >= first);
			assert(expr->rettype() == xpath_type_number);

size_t size = ns.size() - first;

xpath_node* last = ns.begin() + first;

xpath_context c(xpath_node(), 1, size);

double er = expr->eval_number(c, stack);

if (er >= 1.0 && er <= size)
			{
				size_t eri = static_cast<size_t>(er);

if (er == eri)
				{
					xpath_node r = last[eri - 1];

*last++ = r;
				}
			}

ns.truncate(last);
		}

void apply_predicate(xpath_node_set_raw& ns, size_t first, const xpath_stack& stack, bool once)
		{
			if (ns.size() == first) return;

assert(_type == ast_filter || _type == ast_predicate);

if (_test == predicate_constant || _test == predicate_constant_one)
				apply_predicate_number_const(ns, first, _right, stack);
			else if (_right->rettype() == xpath_type_number)
				apply_predicate_number(ns, first, _right, stack, once);
			else
				apply_predicate_boolean(ns, first, _right, stack, once);
		}

void apply_predicates(xpath_node_set_raw& ns, size_t first, const xpath_stack& stack, nodeset_eval_t eval)
		{
			if (ns.size() == first) return;

bool last_once = eval_once(ns.type(), eval);

for (xpath_ast_node* pred = _right; pred; pred = pred->_next)
				pred->apply_predicate(ns, first, stack, !pred->_next && last_once);
		}

bool step_push(xpath_node_set_raw& ns, xml_attribute_struct* a, xml_node_struct* parent, xpath_allocator* alloc)
		{
			assert(a);

const char_t* name = a->name ? a->name + 0 : PUGIXML_TEXT("");

switch (_test)
			{
			case nodetest_name:
				if (strequal(name, _data.nodetest) && is_xpath_attribute(name))
				{
					ns.push_back(xpath_node(xml_attribute(a), xml_node(parent)), alloc);
					return true;
				}
				break;

case nodetest_type_node:
			case nodetest_all:
				if (is_xpath_attribute(name))
				{
					ns.push_back(xpath_node(xml_attribute(a), xml_node(parent)), alloc);
					return true;
				}
				break;

case nodetest_all_in_namespace:
				if (starts_with(name, _data.nodetest) && is_xpath_attribute(name))
				{
					ns.push_back(xpath_node(xml_attribute(a), xml_node(parent)), alloc);
					return true;
				}
				break;

default:
				;
			}

return false;
		}

bool step_push(xpath_node_set_raw& ns, xml_node_struct* n, xpath_allocator* alloc)
		{
			assert(n);

xml_node_type type = PUGI__NODETYPE(n);

switch (_test)
			{
			case nodetest_name:
				if (type == node_element && n->name && strequal(n->name, _data.nodetest))
				{
					ns.push_back(xml_node(n), alloc);
					return true;
				}
				break;

case nodetest_type_node:
				ns.push_back(xml_node(n), alloc);
				return true;

case nodetest_type_comment:
				if (type == node_comment)
				{
					ns.push_back(xml_node(n), alloc);
					return true;
				}
				break;

case nodetest_type_text:
				if (type == node_pcdata || type == node_cdata)
				{
					ns.push_back(xml_node(n), alloc);
					return true;
				}
				break;

case nodetest_type_pi:
				if (type == node_pi)
				{
					ns.push_back(xml_node(n), alloc);
					return true;
				}
				break;

case nodetest_pi:
				if (type == node_pi && n->name && strequal(n->name, _data.nodetest))
				{
					ns.push_back(xml_node(n), alloc);
					return true;
				}
				break;

case nodetest_all:
				if (type == node_element)
				{
					ns.push_back(xml_node(n), alloc);
					return true;
				}
				break;

case nodetest_all_in_namespace:
				if (type == node_element && n->name && starts_with(n->name, _data.nodetest))
				{
					ns.push_back(xml_node(n), alloc);
					return true;
				}
				break;

default:
				assert(false && "Unknown axis");
			}

return false;
		}

template <class T> void step_fill(xpath_node_set_raw& ns, xml_node_struct* n, xpath_allocator* alloc, bool once, T)
		{
			const axis_t axis = T::axis;

switch (axis)
			{
			case axis_attribute:
			{
				for (xml_attribute_struct* a = n->first_attribute; a; a = a->next_attribute)
					if (step_push(ns, a, n, alloc) & once)
						return;

break;
			}

case axis_child:
			{
				for (xml_node_struct* c = n->first_child; c; c = c->next_sibling)
					if (step_push(ns, c, alloc) & once)
						return;

break;
			}

case axis_descendant:
			case axis_descendant_or_self:
			{
				if (axis == axis_descendant_or_self)
					if (step_push(ns, n, alloc) & once)
						return;

xml_node_struct* cur = n->first_child;

while (cur)
				{
					if (step_push(ns, cur, alloc) & once)
						return;

if (cur->first_child)
						cur = cur->first_child;
					else
					{
						while (!cur->next_sibling)
						{
							cur = cur->parent;

if (cur == n) return;
						}

cur = cur->next_sibling;
					}
				}

break;
			}

case axis_following_sibling:
			{
				for (xml_node_struct* c = n->next_sibling; c; c = c->next_sibling)
					if (step_push(ns, c, alloc) & once)
						return;

break;
			}

case axis_preceding_sibling:
			{
				for (xml_node_struct* c = n->prev_sibling_c; c->next_sibling; c = c->prev_sibling_c)
					if (step_push(ns, c, alloc) & once)
						return;

break;
			}

case axis_following:
			{
				xml_node_struct* cur = n;

// exit from this node so that we don't include descendants
				while (!cur->next_sibling)
				{
					cur = cur->parent;

if (!cur) return;
				}

cur = cur->next_sibling;

while (cur)
				{
					if (step_push(ns, cur, alloc) & once)
						return;

if (cur->first_child)
						cur = cur->first_child;
					else
					{
						while (!cur->next_sibling)
						{
							cur = cur->parent;

if (!cur) return;
						}

cur = cur->next_sibling;
					}
				}

break;
			}

case axis_preceding:
			{
				xml_node_struct* cur = n;

// exit from this node so that we don't include descendants
				while (!cur->prev_sibling_c->next_sibling)
				{
					cur = cur->parent;

if (!cur) return;
				}

cur = cur->prev_sibling_c;

while (cur)
				{
					if (cur->first_child)
						cur = cur->first_child->prev_sibling_c;
					else
					{
						// leaf node, can't be ancestor
						if (step_push(ns, cur, alloc) & once)
							return;

while (!cur->prev_sibling_c->next_sibling)
						{
							cur = cur->parent;

if (!cur) return;

if (!node_is_ancestor(cur, n))
								if (step_push(ns, cur, alloc) & once)
									return;
						}

cur = cur->prev_sibling_c;
					}
				}

break;
			}

case axis_ancestor:
			case axis_ancestor_or_self:
			{
				if (axis == axis_ancestor_or_self)
					if (step_push(ns, n, alloc) & once)
						return;

xml_node_struct* cur = n->parent;

while (cur)
				{
					if (step_push(ns, cur, alloc) & once)
						return;

cur = cur->parent;
				}

break;
			}

case axis_self:
			{
				step_push(ns, n, alloc);

break;
			}

case axis_parent:
			{
				if (n->parent)
					step_push(ns, n->parent, alloc);

break;
			}

default:
				assert(false && "Unimplemented axis");
			}
		}

template <class T> void step_fill(xpath_node_set_raw& ns, xml_attribute_struct* a, xml_node_struct* p, xpath_allocator* alloc, bool once, T v)
		{
			const axis_t axis = T::axis;

switch (axis)
			{
			case axis_ancestor:
			case axis_ancestor_or_self:
			{
				if (axis == axis_ancestor_or_self && _test == nodetest_type_node) // reject attributes based on principal node type test
					if (step_push(ns, a, p, alloc) & once)
						return;

xml_node_struct* cur = p;

while (cur)
				{
					if (step_push(ns, cur, alloc) & once)
						return;

cur = cur->parent;
				}

break;
			}

case axis_descendant_or_self:
			case axis_self:
			{
				if (_test == nodetest_type_node) // reject attributes based on principal node type test
					step_push(ns, a, p, alloc);

break;
			}

case axis_following:
			{
				xml_node_struct* cur = p;

while (cur)
				{
					if (cur->first_child)
						cur = cur->first_child;
					else
					{
						while (!cur->next_sibling)
						{
							cur = cur->parent;

if (!cur) return;
						}

cur = cur->next_sibling;
					}

if (step_push(ns, cur, alloc) & once)
						return;
				}

break;
			}

case axis_parent:
			{
				step_push(ns, p, alloc);

break;
			}

case axis_preceding:
			{
				// preceding:: axis does not include attribute nodes and attribute ancestors (they are the same as parent's ancestors), so we can reuse node preceding
				step_fill(ns, p, alloc, once, v);
				break;
			}

default:
				assert(false && "Unimplemented axis");
			}
		}

template <class T> void step_fill(xpath_node_set_raw& ns, const xpath_node& xn, xpath_allocator* alloc, bool once, T v)
		{
			const axis_t axis = T::axis;
			const bool axis_has_attributes = (axis == axis_ancestor || axis == axis_ancestor_or_self || axis == axis_descendant_or_self || axis == axis_following || axis == axis_parent || axis == axis_preceding || axis == axis_self);

if (xn.node())
				step_fill(ns, xn.node().internal_object(), alloc, once, v);
			else if (axis_has_attributes && xn.attribute() && xn.parent())
				step_fill(ns, xn.attribute().internal_object(), xn.parent().internal_object(), alloc, once, v);
		}

template <class T> xpath_node_set_raw step_do(const xpath_context& c, const xpath_stack& stack, nodeset_eval_t eval, T v)
		{
			const axis_t axis = T::axis;
			const bool axis_reverse = (axis == axis_ancestor || axis == axis_ancestor_or_self || axis == axis_preceding || axis == axis_preceding_sibling);
			const xpath_node_set::type_t axis_type = axis_reverse ? xpath_node_set::type_sorted_reverse : xpath_node_set::type_sorted;

bool once =
				(axis == axis_attribute && _test == nodetest_name) ||
				(!_right && eval_once(axis_type, eval)) ||
				(_right && !_right->_next && _right->_test == predicate_constant_one);

xpath_node_set_raw ns;
			ns.set_type(axis_type);

if (_left)
			{
				xpath_node_set_raw s = _left->eval_node_set(c, stack, nodeset_eval_all);

// self axis preserves the original order
				if (axis == axis_self) ns.set_type(s.type());

for (const xpath_node* it = s.begin(); it != s.end(); ++it)
				{
					size_t size = ns.size();

// in general, all axes generate elements in a particular order, but there is no order guarantee if axis is applied to two nodes
					if (axis != axis_self && size != 0) ns.set_type(xpath_node_set::type_unsorted);

step_fill(ns, *it, stack.result, once, v);
					if (_right) apply_predicates(ns, size, stack, eval);
				}
			}
			else
			{
				step_fill(ns, c.n, stack.result, once, v);
				if (_right) apply_predicates(ns, 0, stack, eval);
			}

// child, attribute and self axes always generate unique set of nodes
			// for other axis, if the set stayed sorted, it stayed unique because the traversal algorithms do not visit the same node twice
			if (axis != axis_child && axis != axis_attribute && axis != axis_self && ns.type() == xpath_node_set::type_unsorted)
				ns.remove_duplicates();

return ns;
		}

public:
		xpath_ast_node(ast_type_t type, xpath_value_type rettype_, const char_t* value):
			_type(static_cast<char>(type)), _rettype(static_cast<char>(rettype_)), _axis(0), _test(0), _left(0), _right(0), _next(0)
		{
			assert(type == ast_string_constant);
			_data.string = value;
		}

xpath_ast_node(ast_type_t type, xpath_value_type rettype_, double value):
			_type(static_cast<char>(type)), _rettype(static_cast<char>(rettype_)), _axis(0), _test(0), _left(0), _right(0), _next(0)
		{
			assert(type == ast_number_constant);
			_data.number = value;
		}

xpath_ast_node(ast_type_t type, xpath_value_type rettype_, xpath_variable* value):
			_type(static_cast<char>(type)), _rettype(static_cast<char>(rettype_)), _axis(0), _test(0), _left(0), _right(0), _next(0)
		{
			assert(type == ast_variable);
			_data.variable = value;
		}

xpath_ast_node(ast_type_t type, xpath_value_type rettype_, xpath_ast_node* left = 0, xpath_ast_node* right = 0):
			_type(static_cast<char>(type)), _rettype(static_cast<char>(rettype_)), _axis(0), _test(0), _left(left), _right(right), _next(0)
		{
		}

xpath_ast_node(ast_type_t type, xpath_ast_node* left, axis_t axis, nodetest_t test, const char_t* contents):
			_type(static_cast<char>(type)), _rettype(xpath_type_node_set), _axis(static_cast<char>(axis)), _test(static_cast<char>(test)), _left(left), _right(0), _next(0)
		{
			assert(type == ast_step);
			_data.nodetest = contents;
		}

xpath_ast_node(ast_type_t type, xpath_ast_node* left, xpath_ast_node* right, predicate_t test):
			_type(static_cast<char>(type)), _rettype(xpath_type_node_set), _axis(0), _test(static_cast<char>(test)), _left(left), _right(right), _next(0)
		{
			assert(type == ast_filter || type == ast_predicate);
		}

void set_next(xpath_ast_node* value)
		{
			_next = value;
		}

void set_right(xpath_ast_node* value)
		{
			_right = value;
		}

bool eval_boolean(const xpath_context& c, const xpath_stack& stack)
		{
			switch (_type)
			{
			case ast_op_or:
				return _left->eval_boolean(c, stack) || _right->eval_boolean(c, stack);

case ast_op_and:
				return _left->eval_boolean(c, stack) && _right->eval_boolean(c, stack);

case ast_op_equal:
				return compare_eq(_left, _right, c, stack, equal_to());

case ast_op_not_equal:
				return compare_eq(_left, _right, c, stack, not_equal_to());

case ast_op_less:
				return compare_rel(_left, _right, c, stack, less());

case ast_op_greater:
				return compare_rel(_right, _left, c, stack, less());

case ast_op_less_or_equal:
				return compare_rel(_left, _right, c, stack, less_equal());

case ast_op_greater_or_equal:
				return compare_rel(_right, _left, c, stack, less_equal());

case ast_func_starts_with:
			{
				xpath_allocator_capture cr(stack.result);

xpath_string lr = _left->eval_string(c, stack);
				xpath_string rr = _right->eval_string(c, stack);

return starts_with(lr.c_str(), rr.c_str());
			}

case ast_func_contains:
			{
				xpath_allocator_capture cr(stack.result);

xpath_string lr = _left->eval_string(c, stack);
				xpath_string rr = _right->eval_string(c, stack);

return find_substring(lr.c_str(), rr.c_str()) != 0;
			}

case ast_func_boolean:
				return _left->eval_boolean(c, stack);

case ast_func_not:
				return !_left->eval_boolean(c, stack);

case ast_func_true:
				return true;

case ast_func_false:
				return false;

case ast_func_lang:
			{
				if (c.n.attribute()) return false;

xpath_allocator_capture cr(stack.result);

xpath_string lang = _left->eval_string(c, stack);

for (xml_node n = c.n.node(); n; n = n.parent())
				{
					xml_attribute a = n.attribute(PUGIXML_TEXT("xml:lang"));

if (a)
					{
						const char_t* value = a.value();

// strnicmp / strncasecmp is not portable
						for (const char_t* lit = lang.c_str(); *lit; ++lit)
						{
							if (tolower_ascii(*lit) != tolower_ascii(*value)) return false;
							++value;
						}

return *value == 0 || *value == '-';
					}
				}

return false;
			}

case ast_opt_compare_attribute:
			{
				const char_t* value = (_right->_type == ast_string_constant) ? _right->_data.string : _right->_data.variable->get_string();

xml_attribute attr = c.n.node().attribute(_left->_data.nodetest);

return attr && strequal(attr.value(), value) && is_xpath_attribute(attr.name());
			}

case ast_variable:
			{
				assert(_rettype == _data.variable->type());

if (_rettype == xpath_type_boolean)
					return _data.variable->get_boolean();

// fallthrough to type conversion
			}

default:
			{
				switch (_rettype)
				{
				case xpath_type_number:
					return convert_number_to_boolean(eval_number(c, stack));

case xpath_type_string:
				{
					xpath_allocator_capture cr(stack.result);

return !eval_string(c, stack).empty();
				}

case xpath_type_node_set:
				{
					xpath_allocator_capture cr(stack.result);

return !eval_node_set(c, stack, nodeset_eval_any).empty();
				}

default:
					assert(false && "Wrong expression for return type boolean");
					return false;
				}
			}
			}
		}

double eval_number(const xpath_context& c, const xpath_stack& stack)
		{
			switch (_type)
			{
			case ast_op_add:
				return _left->eval_number(c, stack) + _right->eval_number(c, stack);

case ast_op_subtract:
				return _left->eval_number(c, stack) - _right->eval_number(c, stack);

case ast_op_multiply:
				return _left->eval_number(c, stack) * _right->eval_number(c, stack);

case ast_op_divide:
				return _left->eval_number(c, stack) / _right->eval_number(c, stack);

case ast_op_mod:
				return fmod(_left->eval_number(c, stack), _right->eval_number(c, stack));

case ast_op_negate:
				return -_left->eval_number(c, stack);

case ast_number_constant:
				return _data.number;

case ast_func_last:
				return static_cast<double>(c.size);

case ast_func_position:
				return static_cast<double>(c.position);

case ast_func_count:
			{
				xpath_allocator_capture cr(stack.result);

return static_cast<double>(_left->eval_node_set(c, stack, nodeset_eval_all).size());
			}

case ast_func_string_length_0:
			{
				xpath_allocator_capture cr(stack.result);

return static_cast<double>(string_value(c.n, stack.result).length());
			}

case ast_func_string_length_1:
			{
				xpath_allocator_capture cr(stack.result);

return static_cast<double>(_left->eval_string(c, stack).length());
			}

case ast_func_number_0:
			{
				xpath_allocator_capture cr(stack.result);

return convert_string_to_number(string_value(c.n, stack.result).c_str());
			}

case ast_func_number_1:
				return _left->eval_number(c, stack);

case ast_func_sum:
			{
				xpath_allocator_capture cr(stack.result);

double r = 0;

xpath_node_set_raw ns = _left->eval_node_set(c, stack, nodeset_eval_all);

for (const xpath_node* it = ns.begin(); it != ns.end(); ++it)
				{
					xpath_allocator_capture cri(stack.result);

r += convert_string_to_number(string_value(*it, stack.result).c_str());
				}

return r;
			}

case ast_func_floor:
			{
				double r = _left->eval_number(c, stack);

return r == r ? floor(r) : r;
			}

case ast_func_ceiling:
			{
				double r = _left->eval_number(c, stack);

return r == r ? ceil(r) : r;
			}

case ast_func_round:
				return round_nearest_nzero(_left->eval_number(c, stack));

case ast_variable:
			{
				assert(_rettype == _data.variable->type());

if (_rettype == xpath_type_number)
					return _data.variable->get_number();

// fallthrough to type conversion
			}

default:
			{
				switch (_rettype)
				{
				case xpath_type_boolean:
					return eval_boolean(c, stack) ? 1 : 0;

case xpath_type_string:
				{
					xpath_allocator_capture cr(stack.result);

return convert_string_to_number(eval_string(c, stack).c_str());
				}

case xpath_type_node_set:
				{
					xpath_allocator_capture cr(stack.result);

return convert_string_to_number(eval_string(c, stack).c_str());
				}

default:
					assert(false && "Wrong expression for return type number");
					return 0;
				}

}
			}
		}

xpath_string eval_string_concat(const xpath_context& c, const xpath_stack& stack)
		{
			assert(_type == ast_func_concat);

xpath_allocator_capture ct(stack.temp);

// count the string number
			size_t count = 1;
			for (xpath_ast_node* nc = _right; nc; nc = nc->_next) count++;

// gather all strings
			xpath_string static_buffer[4];
			xpath_string* buffer = static_buffer;

// allocate on-heap for large concats
			if (count > sizeof(static_buffer) / sizeof(static_buffer[0]))
			{
				buffer = static_cast<xpath_string*>(stack.temp->allocate(count * sizeof(xpath_string)));
				assert(buffer);
			}

// evaluate all strings to temporary stack
			xpath_stack swapped_stack = {stack.temp, stack.result};

buffer[0] = _left->eval_string(c, swapped_stack);

size_t pos = 1;
			for (xpath_ast_node* n = _right; n; n = n->_next, ++pos) buffer[pos] = n->eval_string(c, swapped_stack);
			assert(pos == count);

// get total length
			size_t length = 0;
			for (size_t i = 0; i < count; ++i) length += buffer[i].length();

// create final string
			char_t* result = static_cast<char_t*>(stack.result->allocate((length + 1) * sizeof(char_t)));
			assert(result);

char_t* ri = result;

for (size_t j = 0; j < count; ++j)
				for (const char_t* bi = buffer[j].c_str(); *bi; ++bi)
					*ri++ = *bi;

*ri = 0;

return xpath_string::from_heap_preallocated(result, ri);
		}

xpath_string eval_string(const xpath_context& c, const xpath_stack& stack)
		{
			switch (_type)
			{
			case ast_string_constant:
				return xpath_string::from_const(_data.string);

case ast_func_local_name_0:
			{
				xpath_node na = c.n;

return xpath_string::from_const(local_name(na));
			}

case ast_func_local_name_1:
			{
				xpath_allocator_capture cr(stack.result);

xpath_node_set_raw ns = _left->eval_node_set(c, stack, nodeset_eval_first);
				xpath_node na = ns.first();

return xpath_string::from_const(local_name(na));
			}

case ast_func_name_0:
			{
				xpath_node na = c.n;

return xpath_string::from_const(qualified_name(na));
			}

case ast_func_name_1:
			{
				xpath_allocator_capture cr(stack.result);

xpath_node_set_raw ns = _left->eval_node_set(c, stack, nodeset_eval_first);
				xpath_node na = ns.first();

return xpath_string::from_const(qualified_name(na));
			}

case ast_func_namespace_uri_0:
			{
				xpath_node na = c.n;

return xpath_string::from_const(namespace_uri(na));
			}

case ast_func_namespace_uri_1:
			{
				xpath_allocator_capture cr(stack.result);

xpath_node_set_raw ns = _left->eval_node_set(c, stack, nodeset_eval_first);
				xpath_node na = ns.first();

return xpath_string::from_const(namespace_uri(na));
			}

case ast_func_string_0:
				return string_value(c.n, stack.result);

case ast_func_string_1:
				return _left->eval_string(c, stack);

case ast_func_concat:
				return eval_string_concat(c, stack);

case ast_func_substring_before:
			{
				xpath_allocator_capture cr(stack.temp);

xpath_stack swapped_stack = {stack.temp, stack.result};

xpath_string s = _left->eval_string(c, swapped_stack);
				xpath_string p = _right->eval_string(c, swapped_stack);

const char_t* pos = find_substring(s.c_str(), p.c_str());

return pos ? xpath_string::from_heap(s.c_str(), pos, stack.result) : xpath_string();
			}

case ast_func_substring_after:
			{
				xpath_allocator_capture cr(stack.temp);

xpath_stack swapped_stack = {stack.temp, stack.result};

xpath_string s = _left->eval_string(c, swapped_stack);
				xpath_string p = _right->eval_string(c, swapped_stack);

const char_t* pos = find_substring(s.c_str(), p.c_str());
				if (!pos) return xpath_string();

const char_t* rbegin = pos + p.length();
				const char_t* rend = s.c_str() + s.length();

return s.uses_heap() ? xpath_string::from_heap(rbegin, rend, stack.result) : xpath_string::from_const(rbegin);
			}

case ast_func_substring_2:
			{
				xpath_allocator_capture cr(stack.temp);

xpath_stack swapped_stack = {stack.temp, stack.result};

xpath_string s = _left->eval_string(c, swapped_stack);
				size_t s_length = s.length();

double first = round_nearest(_right->eval_number(c, stack));

if (is_nan(first)) return xpath_string(); // NaN
				else if (first >= s_length + 1) return xpath_string();

size_t pos = first < 1 ? 1 : static_cast<size_t>(first);
				assert(1 <= pos && pos <= s_length + 1);

const char_t* rbegin = s.c_str() + (pos - 1);
				const char_t* rend = s.c_str() + s.length();

return s.uses_heap() ? xpath_string::from_heap(rbegin, rend, stack.result) : xpath_string::from_const(rbegin);
			}

case ast_func_substring_3:
			{
				xpath_allocator_capture cr(stack.temp);

xpath_stack swapped_stack = {stack.temp, stack.result};

xpath_string s = _left->eval_string(c, swapped_stack);
				size_t s_length = s.length();

double first = round_nearest(_right->eval_number(c, stack));
				double last = first + round_nearest(_right->_next->eval_number(c, stack));

if (is_nan(first) || is_nan(last)) return xpath_string();
				else if (first >= s_length + 1) return xpath_string();
				else if (first >= last) return xpath_string();
				else if (last < 1) return xpath_string();

size_t pos = first < 1 ? 1 : static_cast<size_t>(first);
				size_t end = last >= s_length + 1 ? s_length + 1 : static_cast<size_t>(last);

assert(1 <= pos && pos <= end && end <= s_length + 1);
				const char_t* rbegin = s.c_str() + (pos - 1);
				const char_t* rend = s.c_str() + (end - 1);

return (end == s_length + 1 && !s.uses_heap()) ? xpath_string::from_const(rbegin) : xpath_string::from_heap(rbegin, rend, stack.result);
			}

case ast_func_normalize_space_0:
			{
				xpath_string s = string_value(c.n, stack.result);

char_t* begin = s.data(stack.result);
				char_t* end = normalize_space(begin);

return xpath_string::from_heap_preallocated(begin, end);
			}

case ast_func_normalize_space_1:
			{
				xpath_string s = _left->eval_string(c, stack);

char_t* begin = s.data(stack.result);
				char_t* end = normalize_space(begin);

return xpath_string::from_heap_preallocated(begin, end);
			}

case ast_func_translate:
			{
				xpath_allocator_capture cr(stack.temp);

xpath_stack swapped_stack = {stack.temp, stack.result};

xpath_string s = _left->eval_string(c, stack);
				xpath_string from = _right->eval_string(c, swapped_stack);
				xpath_string to = _right->_next->eval_string(c, swapped_stack);

char_t* begin = s.data(stack.result);
				char_t* end = translate(begin, from.c_str(), to.c_str(), to.length());

return xpath_string::from_heap_preallocated(begin, end);
			}

case ast_opt_translate_table:
			{
				xpath_string s = _left->eval_string(c, stack);

char_t* begin = s.data(stack.result);
				char_t* end = translate_table(begin, _data.table);

return xpath_string::from_heap_preallocated(begin, end);
			}

case ast_variable:
			{
				assert(_rettype == _data.variable->type());

if (_rettype == xpath_type_string)
					return xpath_string::from_const(_data.variable->get_string());

// fallthrough to type conversion
			}

default:
			{
				switch (_rettype)
				{
				case xpath_type_boolean:
					return xpath_string::from_const(eval_boolean(c, stack) ? PUGIXML_TEXT("true") : PUGIXML_TEXT("false"));

case xpath_type_number:
					return convert_number_to_string(eval_number(c, stack), stack.result);

case xpath_type_node_set:
				{
					xpath_allocator_capture cr(stack.temp);

xpath_stack swapped_stack = {stack.temp, stack.result};

xpath_node_set_raw ns = eval_node_set(c, swapped_stack, nodeset_eval_first);
					return ns.empty() ? xpath_string() : string_value(ns.first(), stack.result);
				}

default:
					assert(false && "Wrong expression for return type string");
					return xpath_string();
				}
			}
			}
		}

xpath_node_set_raw eval_node_set(const xpath_context& c, const xpath_stack& stack, nodeset_eval_t eval)
		{
			switch (_type)
			{
			case ast_op_union:
			{
				xpath_allocator_capture cr(stack.temp);

xpath_stack swapped_stack = {stack.temp, stack.result};

xpath_node_set_raw ls = _left->eval_node_set(c, swapped_stack, eval);
				xpath_node_set_raw rs = _right->eval_node_set(c, stack, eval);

// we can optimize merging two sorted sets, but this is a very rare operation, so don't bother
				rs.set_type(xpath_node_set::type_unsorted);

rs.append(ls.begin(), ls.end(), stack.result);
				rs.remove_duplicates();

return rs;
			}

case ast_filter:
			{
				xpath_node_set_raw set = _left->eval_node_set(c, stack, _test == predicate_constant_one ? nodeset_eval_first : nodeset_eval_all);

// either expression is a number or it contains position() call; sort by document order
				if (_test != predicate_posinv) set.sort_do();

bool once = eval_once(set.type(), eval);

apply_predicate(set, 0, stack, once);

return set;
			}

case ast_func_id:
				return xpath_node_set_raw();

case ast_step:
			{
				switch (_axis)
				{
				case axis_ancestor:
					return step_do(c, stack, eval, axis_to_type<axis_ancestor>());

case axis_ancestor_or_self:
					return step_do(c, stack, eval, axis_to_type<axis_ancestor_or_self>());

case axis_attribute:
					return step_do(c, stack, eval, axis_to_type<axis_attribute>());

case axis_child:
					return step_do(c, stack, eval, axis_to_type<axis_child>());

case axis_descendant:
					return step_do(c, stack, eval, axis_to_type<axis_descendant>());

case axis_descendant_or_self:
					return step_do(c, stack, eval, axis_to_type<axis_descendant_or_self>());

case axis_following:
					return step_do(c, stack, eval, axis_to_type<axis_following>());

case axis_following_sibling:
					return step_do(c, stack, eval, axis_to_type<axis_following_sibling>());

case axis_namespace:
					// namespaced axis is not supported
					return xpath_node_set_raw();

case axis_parent:
					return step_do(c, stack, eval, axis_to_type<axis_parent>());

case axis_preceding:
					return step_do(c, stack, eval, axis_to_type<axis_preceding>());

case axis_preceding_sibling:
					return step_do(c, stack, eval, axis_to_type<axis_preceding_sibling>());

case axis_self:
					return step_do(c, stack, eval, axis_to_type<axis_self>());

default:
					assert(false && "Unknown axis");
					return xpath_node_set_raw();
				}
			}

case ast_step_root:
			{
				assert(!_right); // root step can't have any predicates

xpath_node_set_raw ns;

ns.set_type(xpath_node_set::type_sorted);

if (c.n.node()) ns.push_back(c.n.node().root(), stack.result);
				else if (c.n.attribute()) ns.push_back(c.n.parent().root(), stack.result);

return ns;
			}

case ast_variable:
			{
				assert(_rettype == _data.variable->type());

if (_rettype == xpath_type_node_set)
				{
					const xpath_node_set& s = _data.variable->get_node_set();

xpath_node_set_raw ns;

ns.set_type(s.type());
					ns.append(s.begin(), s.end(), stack.result);

return ns;
				}

// fallthrough to type conversion
			}

default:
				assert(false && "Wrong expression for return type node set");
				return xpath_node_set_raw();
			}
		}

void optimize(xpath_allocator* alloc)
		{
			if (_left)
				_left->optimize(alloc);

if (_right)
				_right->optimize(alloc);

if (_next)
				_next->optimize(alloc);

optimize_self(alloc);
		}

void optimize_self(xpath_allocator* alloc)
		{
			// Rewrite [position()=expr] with [expr]
			// Note that this step has to go before classification to recognize [position()=1]
			if ((_type == ast_filter || _type == ast_predicate) &&
				_right->_type == ast_op_equal && _right->_left->_type == ast_func_position && _right->_right->_rettype == xpath_type_number)
			{
				_right = _right->_right;
			}

// Classify filter/predicate ops to perform various optimizations during evaluation
			if (_type == ast_filter || _type == ast_predicate)
			{
				assert(_test == predicate_default);

if (_right->_type == ast_number_constant && _right->_data.number == 1.0)
					_test = predicate_constant_one;
				else if (_right->_rettype == xpath_type_number && (_right->_type == ast_number_constant || _right->_type == ast_variable || _right->_type == ast_func_last))
					_test = predicate_constant;
				else if (_right->_rettype != xpath_type_number && _right->is_posinv_expr())
					_test = predicate_posinv;
			}

// Rewrite descendant-or-self::node()/child::foo with descendant::foo
			// The former is a full form of //foo, the latter is much faster since it executes the node test immediately
			// Do a similar kind of rewrite for self/descendant/descendant-or-self axes
			// Note that we only rewrite positionally invariant steps (//foo[1] != /descendant::foo[1])
			if (_type == ast_step && (_axis == axis_child || _axis == axis_self || _axis == axis_descendant || _axis == axis_descendant_or_self) && _left &&
				_left->_type == ast_step && _left->_axis == axis_descendant_or_self && _left->_test == nodetest_type_node && !_left->_right &&
				is_posinv_step())
			{
				if (_axis == axis_child || _axis == axis_descendant)
					_axis = axis_descendant;
				else
					_axis = axis_descendant_or_self;

_left = _left->_left;
			}

// Use optimized lookup table implementation for translate() with constant arguments
			if (_type == ast_func_translate && _right->_type == ast_string_constant && _right->_next->_type == ast_string_constant)
			{
				unsigned char* table = translate_table_generate(alloc, _right->_data.string, _right->_next->_data.string);

if (table)
				{
					_type = ast_opt_translate_table;
					_data.table = table;
				}
			}

// Use optimized path for @attr = 'value' or @attr = $value
			if (_type == ast_op_equal &&
				_left->_type == ast_step && _left->_axis == axis_attribute && _left->_test == nodetest_name && !_left->_left && !_left->_right &&
				(_right->_type == ast_string_constant || (_right->_type == ast_variable && _right->_rettype == xpath_type_string)))
			{
				_type = ast_opt_compare_attribute;
			}
		}

bool is_posinv_expr() const
		{
			switch (_type)
			{
			case ast_func_position:
			case ast_func_last:
				return false;

case ast_string_constant:
			case ast_number_constant:
			case ast_variable:
				return true;

case ast_step:
			case ast_step_root:
				return true;

case ast_predicate:
			case ast_filter:
				return true;

default:
				if (_left && !_left->is_posinv_expr()) return false;

for (xpath_ast_node* n = _right; n; n = n->_next)
					if (!n->is_posinv_expr()) return false;

return true;
			}
		}

bool is_posinv_step() const
		{
			assert(_type == ast_step);

for (xpath_ast_node* n = _right; n; n = n->_next)
			{
				assert(n->_type == ast_predicate);

if (n->_test != predicate_posinv)
					return false;
			}

return true;
		}

xpath_value_type rettype() const
		{
			return static_cast<xpath_value_type>(_rettype);
		}
	};

struct xpath_parser
	{
		xpath_allocator* _alloc;
		xpath_lexer _lexer;

const char_t* _query;
		xpath_variable_set* _variables;

xpath_parse_result* _result;

char_t _scratch[32];

#ifdef PUGIXML_NO_EXCEPTIONS
		jmp_buf _error_handler;
	#endif

void throw_error(const char* message)
		{
			_result->error = message;
			_result->offset = _lexer.current_pos() - _query;

#ifdef PUGIXML_NO_EXCEPTIONS
			longjmp(_error_handler, 1);
		#else
			throw xpath_exception(*_result);
		#endif
		}

void throw_error_oom()
		{
		#ifdef PUGIXML_NO_EXCEPTIONS
			throw_error("Out of memory");
		#else
			throw std::bad_alloc();
		#endif
		}

void* alloc_node()
		{
			void* result = _alloc->allocate_nothrow(sizeof(xpath_ast_node));

if (!result) throw_error_oom();

return result;
		}

const char_t* alloc_string(const xpath_lexer_string& value)
		{
			if (value.begin)
			{
				size_t length = static_cast<size_t>(value.end - value.begin);

char_t* c = static_cast<char_t*>(_alloc->allocate_nothrow((length + 1) * sizeof(char_t)));
				if (!c) throw_error_oom();
				assert(c); // workaround for clang static analysis

memcpy(c, value.begin, length * sizeof(char_t));
				c[length] = 0;

return c;
			}
			else return 0;
		}

xpath_ast_node* parse_function_helper(ast_type_t type0, ast_type_t type1, size_t argc, xpath_ast_node* args[2])
		{
			assert(argc <= 1);

if (argc == 1 && args[0]->rettype() != xpath_type_node_set)
				throw_error("Function has to be applied to node set");

return new (alloc_node()) xpath_ast_node(argc == 0 ? type0 : type1, xpath_type_string, args[0]);
		}

xpath_ast_node* parse_function(const xpath_lexer_string& name, size_t argc, xpath_ast_node* args[2])
		{
			switch (name.begin[0])
			{
			case 'b':
				if (name == PUGIXML_TEXT("boolean") && argc == 1)
					return new (alloc_node()) xpath_ast_node(ast_func_boolean, xpath_type_boolean, args[0]);

break;

case 'c':
				if (name == PUGIXML_TEXT("count") && argc == 1)
				{
					if (args[0]->rettype() != xpath_type_node_set)
						throw_error("Function has to be applied to node set");

return new (alloc_node()) xpath_ast_node(ast_func_count, xpath_type_number, args[0]);
				}
				else if (name == PUGIXML_TEXT("contains") && argc == 2)
					return new (alloc_node()) xpath_ast_node(ast_func_contains, xpath_type_boolean, args[0], args[1]);
				else if (name == PUGIXML_TEXT("concat") && argc >= 2)
					return new (alloc_node()) xpath_ast_node(ast_func_concat, xpath_type_string, args[0], args[1]);
				else if (name == PUGIXML_TEXT("ceiling") && argc == 1)
					return new (alloc_node()) xpath_ast_node(ast_func_ceiling, xpath_type_number, args[0]);

break;

case 'f':
				if (name == PUGIXML_TEXT("false") && argc == 0)
					return new (alloc_node()) xpath_ast_node(ast_func_false, xpath_type_boolean);
				else if (name == PUGIXML_TEXT("floor") && argc == 1)
					return new (alloc_node()) xpath_ast_node(ast_func_floor, xpath_type_number, args[0]);

break;

case 'i':
				if (name == PUGIXML_TEXT("id") && argc == 1)
					return new (alloc_node()) xpath_ast_node(ast_func_id, xpath_type_node_set, args[0]);

break;

case 'l':
				if (name == PUGIXML_TEXT("last") && argc == 0)
					return new (alloc_node()) xpath_ast_node(ast_func_last, xpath_type_number);
				else if (name == PUGIXML_TEXT("lang") && argc == 1)
					return new (alloc_node()) xpath_ast_node(ast_func_lang, xpath_type_boolean, args[0]);
				else if (name == PUGIXML_TEXT("local-name") && argc <= 1)
					return parse_function_helper(ast_func_local_name_0, ast_func_local_name_1, argc, args);

break;

case 'n':
				if (name == PUGIXML_TEXT("name") && argc <= 1)
					return parse_function_helper(ast_func_name_0, ast_func_name_1, argc, args);
				else if (name == PUGIXML_TEXT("namespace-uri") && argc <= 1)
					return parse_function_helper(ast_func_namespace_uri_0, ast_func_namespace_uri_1, argc, args);
				else if (name == PUGIXML_TEXT("normalize-space") && argc <= 1)
					return new (alloc_node()) xpath_ast_node(argc == 0 ? ast_func_normalize_space_0 : ast_func_normalize_space_1, xpath_type_string, args[0], args[1]);
				else if (name == PUGIXML_TEXT("not") && argc == 1)
					return new (alloc_node()) xpath_ast_node(ast_func_not, xpath_type_boolean, args[0]);
				else if (name == PUGIXML_TEXT("number") && argc <= 1)
					return new (alloc_node()) xpath_ast_node(argc == 0 ? ast_func_number_0 : ast_func_number_1, xpath_type_number, args[0]);

break;

case 'p':
				if (name == PUGIXML_TEXT("position") && argc == 0)
					return new (alloc_node()) xpath_ast_node(ast_func_position, xpath_type_number);

break;

case 'r':
				if (name == PUGIXML_TEXT("round") && argc == 1)
					return new (alloc_node()) xpath_ast_node(ast_func_round, xpath_type_number, args[0]);

break;

case 's':
				if (name == PUGIXML_TEXT("string") && argc <= 1)
					return new (alloc_node()) xpath_ast_node(argc == 0 ? ast_func_string_0 : ast_func_string_1, xpath_type_string, args[0]);
				else if (name == PUGIXML_TEXT("string-length") && argc <= 1)
					return new (alloc_node()) xpath_ast_node(argc == 0 ? ast_func_string_length_0 : ast_func_string_length_1, xpath_type_number, args[0]);
				else if (name == PUGIXML_TEXT("starts-with") && argc == 2)
					return new (alloc_node()) xpath_ast_node(ast_func_starts_with, xpath_type_boolean, args[0], args[1]);
				else if (name == PUGIXML_TEXT("substring-before") && argc == 2)
					return new (alloc_node()) xpath_ast_node(ast_func_substring_before, xpath_type_string, args[0], args[1]);
				else if (name == PUGIXML_TEXT("substring-after") && argc == 2)
					return new (alloc_node()) xpath_ast_node(ast_func_substring_after, xpath_type_string, args[0], args[1]);
				else if (name == PUGIXML_TEXT("substring") && (argc == 2 || argc == 3))
					return new (alloc_node()) xpath_ast_node(argc == 2 ? ast_func_substring_2 : ast_func_substring_3, xpath_type_string, args[0], args[1]);
				else if (name == PUGIXML_TEXT("sum") && argc == 1)
				{
					if (args[0]->rettype() != xpath_type_node_set) throw_error("Function has to be applied to node set");
					return new (alloc_node()) xpath_ast_node(ast_func_sum, xpath_type_number, args[0]);
				}

break;

case 't':
				if (name == PUGIXML_TEXT("translate") && argc == 3)
					return new (alloc_node()) xpath_ast_node(ast_func_translate, xpath_type_string, args[0], args[1]);
				else if (name == PUGIXML_TEXT("true") && argc == 0)
					return new (alloc_node()) xpath_ast_node(ast_func_true, xpath_type_boolean);

break;

default:
				break;
			}

throw_error("Unrecognized function or wrong parameter count");

return 0;
		}

axis_t parse_axis_name(const xpath_lexer_string& name, bool& specified)
		{
			specified = true;

switch (name.begin[0])
			{
			case 'a':
				if (name == PUGIXML_TEXT("ancestor"))
					return axis_ancestor;
				else if (name == PUGIXML_TEXT("ancestor-or-self"))
					return axis_ancestor_or_self;
				else if (name == PUGIXML_TEXT("attribute"))
					return axis_attribute;

break;

case 'c':
				if (name == PUGIXML_TEXT("child"))
					return axis_child;

break;

case 'd':
				if (name == PUGIXML_TEXT("descendant"))
					return axis_descendant;
				else if (name == PUGIXML_TEXT("descendant-or-self"))
					return axis_descendant_or_self;

break;

case 'f':
				if (name == PUGIXML_TEXT("following"))
					return axis_following;
				else if (name == PUGIXML_TEXT("following-sibling"))
					return axis_following_sibling;

break;

case 'n':
				if (name == PUGIXML_TEXT("namespace"))
					return axis_namespace;

break;

case 'p':
				if (name == PUGIXML_TEXT("parent"))
					return axis_parent;
				else if (name == PUGIXML_TEXT("preceding"))
					return axis_preceding;
				else if (name == PUGIXML_TEXT("preceding-sibling"))
					return axis_preceding_sibling;

break;

case 's':
				if (name == PUGIXML_TEXT("self"))
					return axis_self;

break;

default:
				break;
			}

specified = false;
			return axis_child;
		}

nodetest_t parse_node_test_type(const xpath_lexer_string& name)
		{
			switch (name.begin[0])
			{
			case 'c':
				if (name == PUGIXML_TEXT("comment"))
					return nodetest_type_comment;

break;

case 'n':
				if (name == PUGIXML_TEXT("node"))
					return nodetest_type_node;

break;

case 'p':
				if (name == PUGIXML_TEXT("processing-instruction"))
					return nodetest_type_pi;

break;

case 't':
				if (name == PUGIXML_TEXT("text"))
					return nodetest_type_text;

break;

default:
				break;
			}

return nodetest_none;
		}

// PrimaryExpr ::= VariableReference | '(' Expr ')' | Literal | Number | FunctionCall
		xpath_ast_node* parse_primary_expression()
		{
			switch (_lexer.current())
			{
			case lex_var_ref:
			{
				xpath_lexer_string name = _lexer.contents();

if (!_variables)
					throw_error("Unknown variable: variable set is not provided");

xpath_variable* var = 0;
				if (!get_variable_scratch(_scratch, _variables, name.begin, name.end, &var))
					throw_error_oom();

if (!var)
					throw_error("Unknown variable: variable set does not contain the given name");

_lexer.next();

return new (alloc_node()) xpath_ast_node(ast_variable, var->type(), var);
			}

case lex_open_brace:
			{
				_lexer.next();

xpath_ast_node* n = parse_expression();

if (_lexer.current() != lex_close_brace)
					throw_error("Unmatched braces");

_lexer.next();

return n;
			}

case lex_quoted_string:
			{
				const char_t* value = alloc_string(_lexer.contents());

xpath_ast_node* n = new (alloc_node()) xpath_ast_node(ast_string_constant, xpath_type_string, value);
				_lexer.next();

return n;
			}

case lex_number:
			{
				double value = 0;

if (!convert_string_to_number_scratch(_scratch, _lexer.contents().begin, _lexer.contents().end, &value))
					throw_error_oom();

xpath_ast_node* n = new (alloc_node()) xpath_ast_node(ast_number_constant, xpath_type_number, value);
				_lexer.next();

return n;
			}

case lex_string:
			{
				xpath_ast_node* args[2] = {0};
				size_t argc = 0;

xpath_lexer_string function = _lexer.contents();
				_lexer.next();

xpath_ast_node* last_arg = 0;

if (_lexer.current() != lex_open_brace)
					throw_error("Unrecognized function call");
				_lexer.next();

if (_lexer.current() != lex_close_brace)
					args[argc++] = parse_expression();

while (_lexer.current() != lex_close_brace)
				{
					if (_lexer.current() != lex_comma)
						throw_error("No comma between function arguments");
					_lexer.next();

xpath_ast_node* n = parse_expression();

if (argc < 2) args[argc] = n;
					else last_arg->set_next(n);

argc++;
					last_arg = n;
				}

_lexer.next();

return parse_function(function, argc, args);
			}

default:
				throw_error("Unrecognizable primary expression");

return 0;
			}
		}

// FilterExpr ::= PrimaryExpr | FilterExpr Predicate
		// Predicate ::= '[' PredicateExpr ']'
		// PredicateExpr ::= Expr
		xpath_ast_node* parse_filter_expression()
		{
			xpath_ast_node* n = parse_primary_expression();

while (_lexer.current() == lex_open_square_brace)
			{
				_lexer.next();

xpath_ast_node* expr = parse_expression();

if (n->rettype() != xpath_type_node_set)
					throw_error("Predicate has to be applied to node set");

n = new (alloc_node()) xpath_ast_node(ast_filter, n, expr, predicate_default);

if (_lexer.current() != lex_close_square_brace)
					throw_error("Unmatched square brace");

_lexer.next();
			}

return n;
		}

// Step ::= AxisSpecifier NodeTest Predicate* | AbbreviatedStep
		// AxisSpecifier ::= AxisName '::' | '@'?
		// NodeTest ::= NameTest | NodeType '(' ')' | 'processing-instruction' '(' Literal ')'
		// NameTest ::= '*' | NCName ':' '*' | QName
		// AbbreviatedStep ::= '.' | '..'
		xpath_ast_node* parse_step(xpath_ast_node* set)
		{
			if (set && set->rettype() != xpath_type_node_set)
				throw_error("Step has to be applied to node set");

bool axis_specified = false;
			axis_t axis = axis_child; // implied child axis

if (_lexer.current() == lex_axis_attribute)
			{
				axis = axis_attribute;
				axis_specified = true;

_lexer.next();
			}
			else if (_lexer.current() == lex_dot)
			{
				_lexer.next();

return new (alloc_node()) xpath_ast_node(ast_step, set, axis_self, nodetest_type_node, 0);
			}
			else if (_lexer.current() == lex_double_dot)
			{
				_lexer.next();

return new (alloc_node()) xpath_ast_node(ast_step, set, axis_parent, nodetest_type_node, 0);
			}

nodetest_t nt_type = nodetest_none;
			xpath_lexer_string nt_name;

if (_lexer.current() == lex_string)
			{
				// node name test
				nt_name = _lexer.contents();
				_lexer.next();

// was it an axis name?
				if (_lexer.current() == lex_double_colon)
				{
					// parse axis name
					if (axis_specified)
						throw_error("Two axis specifiers in one step");

axis = parse_axis_name(nt_name, axis_specified);

if (!axis_specified)
						throw_error("Unknown axis");

// read actual node test
					_lexer.next();

if (_lexer.current() == lex_multiply)
					{
						nt_type = nodetest_all;
						nt_name = xpath_lexer_string();
						_lexer.next();
					}
					else if (_lexer.current() == lex_string)
					{
						nt_name = _lexer.contents();
						_lexer.next();
					}
					else throw_error("Unrecognized node test");
				}

if (nt_type == nodetest_none)
				{
					// node type test or processing-instruction
					if (_lexer.current() == lex_open_brace)
					{
						_lexer.next();

if (_lexer.current() == lex_close_brace)
						{
							_lexer.next();

nt_type = parse_node_test_type(nt_name);

if (nt_type == nodetest_none)
								throw_error("Unrecognized node type");

nt_name = xpath_lexer_string();
						}
						else if (nt_name == PUGIXML_TEXT("processing-instruction"))
						{
							if (_lexer.current() != lex_quoted_string)
								throw_error("Only literals are allowed as arguments to processing-instruction()");

nt_type = nodetest_pi;
							nt_name = _lexer.contents();
							_lexer.next();

if (_lexer.current() != lex_close_brace)
								throw_error("Unmatched brace near processing-instruction()");
							_lexer.next();
						}
						else
						{
							throw_error("Unmatched brace near node type test");
						}
					}
					// QName or NCName:*
					else
					{
						if (nt_name.end - nt_name.begin > 2 && nt_name.end[-2] == ':' && nt_name.end[-1] == '*') // NCName:*
						{
							nt_name.end--; // erase *

nt_type = nodetest_all_in_namespace;
						}
						else
						{
							nt_type = nodetest_name;
						}
					}
				}
			}
			else if (_lexer.current() == lex_multiply)
			{
				nt_type = nodetest_all;
				_lexer.next();
			}
			else
			{
				throw_error("Unrecognized node test");
			}

const char_t* nt_name_copy = alloc_string(nt_name);
			xpath_ast_node* n = new (alloc_node()) xpath_ast_node(ast_step, set, axis, nt_type, nt_name_copy);

xpath_ast_node* last = 0;

while (_lexer.current() == lex_open_square_brace)
			{
				_lexer.next();

xpath_ast_node* expr = parse_expression();

xpath_ast_node* pred = new (alloc_node()) xpath_ast_node(ast_predicate, 0, expr, predicate_default);

if (_lexer.current() != lex_close_square_brace)
					throw_error("Unmatched square brace");
				_lexer.next();

if (last) last->set_next(pred);
				else n->set_right(pred);

last = pred;
			}

return n;
		}

// RelativeLocationPath ::= Step | RelativeLocationPath '/' Step | RelativeLocationPath '//' Step
		xpath_ast_node* parse_relative_location_path(xpath_ast_node* set)
		{
			xpath_ast_node* n = parse_step(set);

while (_lexer.current() == lex_slash || _lexer.current() == lex_double_slash)
			{
				lexeme_t l = _lexer.current();
				_lexer.next();

if (l == lex_double_slash)
					n = new (alloc_node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);

n = parse_step(n);
			}

return n;
		}

// LocationPath ::= RelativeLocationPath | AbsoluteLocationPath
		// AbsoluteLocationPath ::= '/' RelativeLocationPath? | '//' RelativeLocationPath
		xpath_ast_node* parse_location_path()
		{
			if (_lexer.current() == lex_slash)
			{
				_lexer.next();

xpath_ast_node* n = new (alloc_node()) xpath_ast_node(ast_step_root, xpath_type_node_set);

// relative location path can start from axis_attribute, dot, double_dot, multiply and string lexemes; any other lexeme means standalone root path
				lexeme_t l = _lexer.current();

if (l == lex_string || l == lex_axis_attribute || l == lex_dot || l == lex_double_dot || l == lex_multiply)
					return parse_relative_location_path(n);
				else
					return n;
			}
			else if (_lexer.current() == lex_double_slash)
			{
				_lexer.next();

xpath_ast_node* n = new (alloc_node()) xpath_ast_node(ast_step_root, xpath_type_node_set);
				n = new (alloc_node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);

return parse_relative_location_path(n);
			}

// else clause moved outside of if because of bogus warning 'control may reach end of non-void function being inlined' in gcc 4.0.1
			return parse_relative_location_path(0);
		}

// PathExpr ::= LocationPath
		//				| FilterExpr
		//				| FilterExpr '/' RelativeLocationPath
		//				| FilterExpr '//' RelativeLocationPath
		// UnionExpr ::= PathExpr | UnionExpr '|' PathExpr
		// UnaryExpr ::= UnionExpr | '-' UnaryExpr
		xpath_ast_node* parse_path_or_unary_expression()
		{
			// Clarification.
			// PathExpr begins with either LocationPath or FilterExpr.
			// FilterExpr begins with PrimaryExpr
			// PrimaryExpr begins with '$' in case of it being a variable reference,
			// '(' in case of it being an expression, string literal, number constant or
			// function call.

if (_lexer.current() == lex_var_ref || _lexer.current() == lex_open_brace ||
				_lexer.current() == lex_quoted_string || _lexer.current() == lex_number ||
				_lexer.current() == lex_string)
			{
				if (_lexer.current() == lex_string)
				{
					// This is either a function call, or not - if not, we shall proceed with location path
					const char_t* state = _lexer.state();

while (PUGI__IS_CHARTYPE(*state, ct_space)) ++state;

if (*state != '(') return parse_location_path();

// This looks like a function call; however this still can be a node-test. Check it.
					if (parse_node_test_type(_lexer.contents()) != nodetest_none)
						return parse_location_path();
				}

xpath_ast_node* n = parse_filter_expression();

if (_lexer.current() == lex_slash || _lexer.current() == lex_double_slash)
				{
					lexeme_t l = _lexer.current();
					_lexer.next();

if (l == lex_double_slash)
					{
						if (n->rettype() != xpath_type_node_set)
							throw_error("Step has to be applied to node set");

n = new (alloc_node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);
					}

// select from location path
					return parse_relative_location_path(n);
				}

return n;
			}
			else if (_lexer.current() == lex_minus)
			{
				_lexer.next();

// precedence 7+ - only parses union expressions
				xpath_ast_node* expr = parse_expression_rec(parse_path_or_unary_expression(), 7);

return new (alloc_node()) xpath_ast_node(ast_op_negate, xpath_type_number, expr);
			}
			else
			{
				return parse_location_path();
			}
		}

struct binary_op_t
		{
			ast_type_t asttype;
			xpath_value_type rettype;
			int precedence;

binary_op_t(): asttype(ast_unknown), rettype(xpath_type_none), precedence(0)
			{
			}

binary_op_t(ast_type_t asttype_, xpath_value_type rettype_, int precedence_): asttype(asttype_), rettype(rettype_), precedence(precedence_)
			{
			}

static binary_op_t parse(xpath_lexer& lexer)
			{
				switch (lexer.current())
				{
				case lex_string:
					if (lexer.contents() == PUGIXML_TEXT("or"))
						return binary_op_t(ast_op_or, xpath_type_boolean, 1);
					else if (lexer.contents() == PUGIXML_TEXT("and"))
						return binary_op_t(ast_op_and, xpath_type_boolean, 2);
					else if (lexer.contents() == PUGIXML_TEXT("div"))
						return binary_op_t(ast_op_divide, xpath_type_number, 6);
					else if (lexer.contents() == PUGIXML_TEXT("mod"))
						return binary_op_t(ast_op_mod, xpath_type_number, 6);
					else
						return binary_op_t();

case lex_equal:
					return binary_op_t(ast_op_equal, xpath_type_boolean, 3);

case lex_not_equal:
					return binary_op_t(ast_op_not_equal, xpath_type_boolean, 3);

case lex_less:
					return binary_op_t(ast_op_less, xpath_type_boolean, 4);

case lex_greater:
					return binary_op_t(ast_op_greater, xpath_type_boolean, 4);

case lex_less_or_equal:
					return binary_op_t(ast_op_less_or_equal, xpath_type_boolean, 4);

case lex_greater_or_equal:
					return binary_op_t(ast_op_greater_or_equal, xpath_type_boolean, 4);

case lex_plus:
					return binary_op_t(ast_op_add, xpath_type_number, 5);

case lex_minus:
					return binary_op_t(ast_op_subtract, xpath_type_number, 5);

case lex_multiply:
					return binary_op_t(ast_op_multiply, xpath_type_number, 6);

case lex_union:
					return binary_op_t(ast_op_union, xpath_type_node_set, 7);

default:
					return binary_op_t();
				}
			}
		};

xpath_ast_node* parse_expression_rec(xpath_ast_node* lhs, int limit)
		{
			binary_op_t op = binary_op_t::parse(_lexer);

while (op.asttype != ast_unknown && op.precedence >= limit)
			{
				_lexer.next();

xpath_ast_node* rhs = parse_path_or_unary_expression();

binary_op_t nextop = binary_op_t::parse(_lexer);

while (nextop.asttype != ast_unknown && nextop.precedence > op.precedence)
				{
					rhs = parse_expression_rec(rhs, nextop.precedence);

nextop = binary_op_t::parse(_lexer);
				}

if (op.asttype == ast_op_union && (lhs->rettype() != xpath_type_node_set || rhs->rettype() != xpath_type_node_set))
					throw_error("Union operator has to be applied to node sets");

lhs = new (alloc_node()) xpath_ast_node(op.asttype, op.rettype, lhs, rhs);

op = binary_op_t::parse(_lexer);
			}

return lhs;
		}

// Expr ::= OrExpr
		// OrExpr ::= AndExpr | OrExpr 'or' AndExpr
		// AndExpr ::= EqualityExpr | AndExpr 'and' EqualityExpr
		// EqualityExpr ::= RelationalExpr
		//					| EqualityExpr '=' RelationalExpr
		//					| EqualityExpr '!=' RelationalExpr
		// RelationalExpr ::= AdditiveExpr
		//					  | RelationalExpr '<' AdditiveExpr
		//					  | RelationalExpr '>' AdditiveExpr
		//					  | RelationalExpr '<=' AdditiveExpr
		//					  | RelationalExpr '>=' AdditiveExpr
		// AdditiveExpr ::= MultiplicativeExpr
		//					| AdditiveExpr '+' MultiplicativeExpr
		//					| AdditiveExpr '-' MultiplicativeExpr
		// MultiplicativeExpr ::= UnaryExpr
		//						  | MultiplicativeExpr '*' UnaryExpr
		//						  | MultiplicativeExpr 'div' UnaryExpr
		//						  | MultiplicativeExpr 'mod' UnaryExpr
		xpath_ast_node* parse_expression()
		{
			return parse_expression_rec(parse_path_or_unary_expression(), 0);
		}

xpath_parser(const char_t* query, xpath_variable_set* variables, xpath_allocator* alloc, xpath_parse_result* result): _alloc(alloc), _lexer(query), _query(query), _variables(variables), _result(result)
		{
		}

xpath_ast_node* parse()
		{
			xpath_ast_node* result = parse_expression();

// check if there are unparsed tokens left
			if (_lexer.current() != lex_eof)
				throw_error("Incorrect query");

return result;
		}

static xpath_ast_node* parse(const char_t* query, xpath_variable_set* variables, xpath_allocator* alloc, xpath_parse_result* result)
		{
			xpath_parser parser(query, variables, alloc, result);

#ifdef PUGIXML_NO_EXCEPTIONS
			int error = setjmp(parser._error_handler);

return (error == 0) ? parser.parse() : 0;
		#else
			return parser.parse();
		#endif
		}
	};

struct xpath_query_impl
	{
		static xpath_query_impl* create()
		{
			void* memory = xml_memory::allocate(sizeof(xpath_query_impl));
			if (!memory) return 0;

return new (memory) xpath_query_impl();
		}

static void destroy(xpath_query_impl* impl)
		{
			// free all allocated pages
			impl->alloc.release();

// free allocator memory (with the first page)
			xml_memory::deallocate(impl);
		}

xpath_query_impl(): root(0), alloc(&block)
		{
			block.next = 0;
			block.capacity = sizeof(block.data);
		}

xpath_ast_node* root;
		xpath_allocator alloc;
		xpath_memory_block block;
	};

PUGI__FN xpath_string evaluate_string_impl(xpath_query_impl* impl, const xpath_node& n, xpath_stack_data& sd)
	{
		if (!impl) return xpath_string();

#ifdef PUGIXML_NO_EXCEPTIONS
		if (setjmp(sd.error_handler)) return xpath_string();
	#endif

xpath_context c(n, 1, 1);

return impl->root->eval_string(c, sd.stack);
	}

PUGI__FN impl::xpath_ast_node* evaluate_node_set_prepare(xpath_query_impl* impl)
	{
		if (!impl) return 0;

if (impl->root->rettype() != xpath_type_node_set)
		{
		#ifdef PUGIXML_NO_EXCEPTIONS
			return 0;
		#else
			xpath_parse_result res;
			res.error = "Expression does not evaluate to node set";

throw xpath_exception(res);
		#endif
		}

return impl->root;
	}
PUGI__NS_END

namespace pugi
{
#ifndef PUGIXML_NO_EXCEPTIONS
	PUGI__FN xpath_exception::xpath_exception(const xpath_parse_result& result_): _result(result_)
	{
		assert(_result.error);
	}

PUGI__FN const char* xpath_exception::what() const throw()
	{
		return _result.error;
	}

PUGI__FN const xpath_parse_result& xpath_exception::result() const
	{
		return _result;
	}
#endif

PUGI__FN xpath_node::xpath_node()
	{
	}

PUGI__FN xpath_node::xpath_node(const xml_node& node_): _node(node_)
	{
	}

PUGI__FN xpath_node::xpath_node(const xml_attribute& attribute_, const xml_node& parent_): _node(attribute_ ? parent_ : xml_node()), _attribute(attribute_)
	{
	}

PUGI__FN xml_node xpath_node::node() const
	{
		return _attribute ? xml_node() : _node;
	}

PUGI__FN xml_attribute xpath_node::attribute() const
	{
		return _attribute;
	}

PUGI__FN xml_node xpath_node::parent() const
	{
		return _attribute ? _node : _node.parent();
	}

PUGI__FN static void unspecified_bool_xpath_node(xpath_node***)
	{
	}

PUGI__FN xpath_node::operator xpath_node::unspecified_bool_type() const
	{
		return (_node || _attribute) ? unspecified_bool_xpath_node : 0;
	}

PUGI__FN bool xpath_node::operator!() const
	{
		return !(_node || _attribute);
	}

PUGI__FN bool xpath_node::operator==(const xpath_node& n) const
	{
		return _node == n._node && _attribute == n._attribute;
	}

PUGI__FN bool xpath_node::operator!=(const xpath_node& n) const
	{
		return _node != n._node || _attribute != n._attribute;
	}

#ifdef __BORLANDC__
	PUGI__FN bool operator&&(const xpath_node& lhs, bool rhs)
	{
		return (bool)lhs && rhs;
	}

PUGI__FN bool operator||(const xpath_node& lhs, bool rhs)
	{
		return (bool)lhs || rhs;
	}
#endif

PUGI__FN void xpath_node_set::_assign(const_iterator begin_, const_iterator end_, type_t type_)
	{
		assert(begin_ <= end_);

size_t size_ = static_cast<size_t>(end_ - begin_);

if (size_ <= 1)
		{
			// deallocate old buffer
			if (_begin != &_storage) impl::xml_memory::deallocate(_begin);

// use internal buffer
			if (begin_ != end_) _storage = *begin_;

_begin = &_storage;
			_end = &_storage + size_;
			_type = type_;
		}
		else
		{
			// make heap copy
			xpath_node* storage = static_cast<xpath_node*>(impl::xml_memory::allocate(size_ * sizeof(xpath_node)));

if (!storage)
			{
			#ifdef PUGIXML_NO_EXCEPTIONS
				return;
			#else
				throw std::bad_alloc();
			#endif
			}

memcpy(storage, begin_, size_ * sizeof(xpath_node));

// deallocate old buffer
			if (_begin != &_storage) impl::xml_memory::deallocate(_begin);

// finalize
			_begin = storage;
			_end = storage + size_;
			_type = type_;
		}
	}

#ifdef PUGIXML_HAS_MOVE
	PUGI__FN void xpath_node_set::_move(xpath_node_set& rhs)
	{
		_type = rhs._type;
		_storage = rhs._storage;
		_begin = (rhs._begin == &rhs._storage) ? &_storage : rhs._begin;
		_end = _begin + (rhs._end - rhs._begin);

rhs._type = type_unsorted;
		rhs._begin = &rhs._storage;
		rhs._end = rhs._begin;
	}
#endif

PUGI__FN xpath_node_set::xpath_node_set(): _type(type_unsorted), _begin(&_storage), _end(&_storage)
	{
	}

PUGI__FN xpath_node_set::xpath_node_set(const_iterator begin_, const_iterator end_, type_t type_): _type(type_unsorted), _begin(&_storage), _end(&_storage)
	{
		_assign(begin_, end_, type_);
	}

PUGI__FN xpath_node_set::~xpath_node_set()
	{
		if (_begin != &_storage)
			impl::xml_memory::deallocate(_begin);
	}

PUGI__FN xpath_node_set::xpath_node_set(const xpath_node_set& ns): _type(type_unsorted), _begin(&_storage), _end(&_storage)
	{
		_assign(ns._begin, ns._end, ns._type);
	}

PUGI__FN xpath_node_set& xpath_node_set::operator=(const xpath_node_set& ns)
	{
		if (this == &ns) return *this;

_assign(ns._begin, ns._end, ns._type);

return *this;
	}

#ifdef PUGIXML_HAS_MOVE
	PUGI__FN xpath_node_set::xpath_node_set(xpath_node_set&& rhs): _type(type_unsorted), _begin(&_storage), _end(&_storage)
	{
		_move(rhs);
	}

PUGI__FN xpath_node_set& xpath_node_set::operator=(xpath_node_set&& rhs)
	{
		if (this == &rhs) return *this;

if (_begin != &_storage)
			impl::xml_memory::deallocate(_begin);

_move(rhs);

return *this;
	}
#endif

PUGI__FN xpath_node_set::type_t xpath_node_set::type() const
	{
		return _type;
	}

PUGI__FN size_t xpath_node_set::size() const
	{
		return _end - _begin;
	}

PUGI__FN bool xpath_node_set::empty() const
	{
		return _begin == _end;
	}

PUGI__FN const xpath_node& xpath_node_set::operator[](size_t index) const
	{
		assert(index < size());
		return _begin[index];
	}

PUGI__FN xpath_node_set::const_iterator xpath_node_set::begin() const
	{
		return _begin;
	}

PUGI__FN xpath_node_set::const_iterator xpath_node_set::end() const
	{
		return _end;
	}

PUGI__FN void xpath_node_set::sort(bool reverse)
	{
		_type = impl::xpath_sort(_begin, _end, _type, reverse);
	}

PUGI__FN xpath_node xpath_node_set::first() const
	{
		return impl::xpath_first(_begin, _end, _type);
	}

PUGI__FN xpath_parse_result::xpath_parse_result(): error("Internal error"), offset(0)
	{
	}

PUGI__FN xpath_parse_result::operator bool() const
	{
		return error == 0;
	}

PUGI__FN const char* xpath_parse_result::description() const
	{
		return error ? error : "No error";
	}

PUGI__FN xpath_variable::xpath_variable(xpath_value_type type_): _type(type_), _next(0)
	{
	}

PUGI__FN const char_t* xpath_variable::name() const
	{
		switch (_type)
		{
		case xpath_type_node_set:
			return static_cast<const impl::xpath_variable_node_set*>(this)->name;

case xpath_type_number:
			return static_cast<const impl::xpath_variable_number*>(this)->name;

case xpath_type_string:
			return static_cast<const impl::xpath_variable_string*>(this)->name;

case xpath_type_boolean:
			return static_cast<const impl::xpath_variable_boolean*>(this)->name;

default:
			assert(false && "Invalid variable type");
			return 0;
		}
	}

PUGI__FN xpath_value_type xpath_variable::type() const
	{
		return _type;
	}

PUGI__FN bool xpath_variable::get_boolean() const
	{
		return (_type == xpath_type_boolean) ? static_cast<const impl::xpath_variable_boolean*>(this)->value : false;
	}

PUGI__FN double xpath_variable::get_number() const
	{
		return (_type == xpath_type_number) ? static_cast<const impl::xpath_variable_number*>(this)->value : impl::gen_nan();
	}

PUGI__FN const char_t* xpath_variable::get_string() const
	{
		const char_t* value = (_type == xpath_type_string) ? static_cast<const impl::xpath_variable_string*>(this)->value : 0;
		return value ? value : PUGIXML_TEXT("");
	}

PUGI__FN const xpath_node_set& xpath_variable::get_node_set() const
	{
		return (_type == xpath_type_node_set) ? static_cast<const impl::xpath_variable_node_set*>(this)->value : impl::dummy_node_set;
	}

PUGI__FN bool xpath_variable::set(bool value)
	{
		if (_type != xpath_type_boolean) return false;

static_cast<impl::xpath_variable_boolean*>(this)->value = value;
		return true;
	}

PUGI__FN bool xpath_variable::set(double value)
	{
		if (_type != xpath_type_number) return false;

static_cast<impl::xpath_variable_number*>(this)->value = value;
		return true;
	}

PUGI__FN bool xpath_variable::set(const char_t* value)
	{
		if (_type != xpath_type_string) return false;

impl::xpath_variable_string* var = static_cast<impl::xpath_variable_string*>(this);

// duplicate string
		size_t size = (impl::strlength(value) + 1) * sizeof(char_t);

char_t* copy = static_cast<char_t*>(impl::xml_memory::allocate(size));
		if (!copy) return false;

memcpy(copy, value, size);

// replace old string
		if (var->value) impl::xml_memory::deallocate(var->value);
		var->value = copy;

return true;
	}

PUGI__FN bool xpath_variable::set(const xpath_node_set& value)
	{
		if (_type != xpath_type_node_set) return false;

static_cast<impl::xpath_variable_node_set*>(this)->value = value;
		return true;
	}

PUGI__FN xpath_variable_set::xpath_variable_set()
	{
		for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
			_data[i] = 0;
	}

PUGI__FN xpath_variable_set::~xpath_variable_set()
	{
		for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
			_destroy(_data[i]);
	}

PUGI__FN xpath_variable_set::xpath_variable_set(const xpath_variable_set& rhs)
	{
		for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
			_data[i] = 0;

_assign(rhs);
	}

PUGI__FN xpath_variable_set& xpath_variable_set::operator=(const xpath_variable_set& rhs)
	{
		if (this == &rhs) return *this;

_assign(rhs);

return *this;
	}

#ifdef PUGIXML_HAS_MOVE
	PUGI__FN xpath_variable_set::xpath_variable_set(xpath_variable_set&& rhs)
	{
		for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
		{
			_data[i] = rhs._data[i];
			rhs._data[i] = 0;
		}
	}

PUGI__FN xpath_variable_set& xpath_variable_set::operator=(xpath_variable_set&& rhs)
	{
		for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
		{
			_destroy(_data[i]);

_data[i] = rhs._data[i];
			rhs._data[i] = 0;
		}

return *this;
	}
#endif

PUGI__FN void xpath_variable_set::_assign(const xpath_variable_set& rhs)
	{
		xpath_variable_set temp;

for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
			if (rhs._data[i] && !_clone(rhs._data[i], &temp._data[i]))
				return;

_swap(temp);
	}

PUGI__FN void xpath_variable_set::_swap(xpath_variable_set& rhs)
	{
		for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
		{
			xpath_variable* chain = _data[i];

_data[i] = rhs._data[i];
			rhs._data[i] = chain;
		}
	}

PUGI__FN xpath_variable* xpath_variable_set::_find(const char_t* name) const
	{
		const size_t hash_size = sizeof(_data) / sizeof(_data[0]);
		size_t hash = impl::hash_string(name) % hash_size;

// look for existing variable
		for (xpath_variable* var = _data[hash]; var; var = var->_next)
			if (impl::strequal(var->name(), name))
				return var;

return 0;
	}

PUGI__FN bool xpath_variable_set::_clone(xpath_variable* var, xpath_variable** out_result)
	{
		xpath_variable* last = 0;

while (var)
		{
			// allocate storage for new variable
			xpath_variable* nvar = impl::new_xpath_variable(var->_type, var->name());
			if (!nvar) return false;

// link the variable to the result immediately to handle failures gracefully
			if (last)
				last->_next = nvar;
			else
				*out_result = nvar;

last = nvar;

// copy the value; this can fail due to out-of-memory conditions
			if (!impl::copy_xpath_variable(nvar, var)) return false;

var = var->_next;
		}

return true;
	}

PUGI__FN void xpath_variable_set::_destroy(xpath_variable* var)
	{
		while (var)
		{
			xpath_variable* next = var->_next;

impl::delete_xpath_variable(var->_type, var);

var = next;
		}
	}

PUGI__FN xpath_variable* xpath_variable_set::add(const char_t* name, xpath_value_type type)
	{
		const size_t hash_size = sizeof(_data) / sizeof(_data[0]);
		size_t hash = impl::hash_string(name) % hash_size;

// look for existing variable
		for (xpath_variable* var = _data[hash]; var; var = var->_next)
			if (impl::strequal(var->name(), name))
				return var->type() == type ? var : 0;

// add new variable
		xpath_variable* result = impl::new_xpath_variable(type, name);

if (result)
		{
			result->_next = _data[hash];

_data[hash] = result;
		}

return result;
	}

PUGI__FN bool xpath_variable_set::set(const char_t* name, bool value)
	{
		xpath_variable* var = add(name, xpath_type_boolean);
		return var ? var->set(value) : false;
	}

PUGI__FN bool xpath_variable_set::set(const char_t* name, double value)
	{
		xpath_variable* var = add(name, xpath_type_number);
		return var ? var->set(value) : false;
	}

PUGI__FN bool xpath_variable_set::set(const char_t* name, const char_t* value)
	{
		xpath_variable* var = add(name, xpath_type_string);
		return var ? var->set(value) : false;
	}

PUGI__FN bool xpath_variable_set::set(const char_t* name, const xpath_node_set& value)
	{
		xpath_variable* var = add(name, xpath_type_node_set);
		return var ? var->set(value) : false;
	}

PUGI__FN xpath_variable* xpath_variable_set::get(const char_t* name)
	{
		return _find(name);
	}

PUGI__FN const xpath_variable* xpath_variable_set::get(const char_t* name) const
	{
		return _find(name);
	}

PUGI__FN xpath_query::xpath_query(const char_t* query, xpath_variable_set* variables): _impl(0)
	{
		impl::xpath_query_impl* qimpl = impl::xpath_query_impl::create();

if (!qimpl)
		{
		#ifdef PUGIXML_NO_EXCEPTIONS
			_result.error = "Out of memory";
		#else
			throw std::bad_alloc();
		#endif
		}
		else
		{
			using impl::auto_deleter; // MSVC7 workaround
			auto_deleter<impl::xpath_query_impl> impl(qimpl, impl::xpath_query_impl::destroy);

qimpl->root = impl::xpath_parser::parse(query, variables, &qimpl->alloc, &_result);

if (qimpl->root)
			{
				qimpl->root->optimize(&qimpl->alloc);

_impl = impl.release();
				_result.error = 0;
			}
		}
	}

PUGI__FN xpath_query::xpath_query(): _impl(0)
	{
	}

PUGI__FN xpath_query::~xpath_query()
	{
		if (_impl)
			impl::xpath_query_impl::destroy(static_cast<impl::xpath_query_impl*>(_impl));
	}

#ifdef PUGIXML_HAS_MOVE
	PUGI__FN xpath_query::xpath_query(xpath_query&& rhs)
	{
		_impl = rhs._impl;
		_result = rhs._result;
		rhs._impl = 0;
		rhs._result = xpath_parse_result();
	}

PUGI__FN xpath_query& xpath_query::operator=(xpath_query&& rhs)
	{
		if (this == &rhs) return *this;

if (_impl)
			impl::xpath_query_impl::destroy(static_cast<impl::xpath_query_impl*>(_impl));

_impl = rhs._impl;
		_result = rhs._result;
		rhs._impl = 0;
		rhs._result = xpath_parse_result();

return *this;
	}
#endif

PUGI__FN xpath_value_type xpath_query::return_type() const
	{
		if (!_impl) return xpath_type_none;

return static_cast<impl::xpath_query_impl*>(_impl)->root->rettype();
	}

PUGI__FN bool xpath_query::evaluate_boolean(const xpath_node& n) const
	{
		if (!_impl) return false;

impl::xpath_context c(n, 1, 1);
		impl::xpath_stack_data sd;

#ifdef PUGIXML_NO_EXCEPTIONS
		if (setjmp(sd.error_handler)) return false;
	#endif

return static_cast<impl::xpath_query_impl*>(_impl)->root->eval_boolean(c, sd.stack);
	}

PUGI__FN double xpath_query::evaluate_number(const xpath_node& n) const
	{
		if (!_impl) return impl::gen_nan();

impl::xpath_context c(n, 1, 1);
		impl::xpath_stack_data sd;

#ifdef PUGIXML_NO_EXCEPTIONS
		if (setjmp(sd.error_handler)) return impl::gen_nan();
	#endif

return static_cast<impl::xpath_query_impl*>(_impl)->root->eval_number(c, sd.stack);
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN string_t xpath_query::evaluate_string(const xpath_node& n) const
	{
		impl::xpath_stack_data sd;

impl::xpath_string r = impl::evaluate_string_impl(static_cast<impl::xpath_query_impl*>(_impl), n, sd);

return string_t(r.c_str(), r.length());
	}
#endif

PUGI__FN size_t xpath_query::evaluate_string(char_t* buffer, size_t capacity, const xpath_node& n) const
	{
		impl::xpath_stack_data sd;

impl::xpath_string r = impl::evaluate_string_impl(static_cast<impl::xpath_query_impl*>(_impl), n, sd);

size_t full_size = r.length() + 1;

if (capacity > 0)
		{
			size_t size = (full_size < capacity) ? full_size : capacity;
			assert(size > 0);

memcpy(buffer, r.c_str(), (size - 1) * sizeof(char_t));
			buffer[size - 1] = 0;
		}

return full_size;
	}

PUGI__FN xpath_node_set xpath_query::evaluate_node_set(const xpath_node& n) const
	{
		impl::xpath_ast_node* root = impl::evaluate_node_set_prepare(static_cast<impl::xpath_query_impl*>(_impl));
		if (!root) return xpath_node_set();

impl::xpath_context c(n, 1, 1);
		impl::xpath_stack_data sd;

#ifdef PUGIXML_NO_EXCEPTIONS
		if (setjmp(sd.error_handler)) return xpath_node_set();
	#endif

impl::xpath_node_set_raw r = root->eval_node_set(c, sd.stack, impl::nodeset_eval_all);

return xpath_node_set(r.begin(), r.end(), r.type());
	}

PUGI__FN xpath_node xpath_query::evaluate_node(const xpath_node& n) const
	{
		impl::xpath_ast_node* root = impl::evaluate_node_set_prepare(static_cast<impl::xpath_query_impl*>(_impl));
		if (!root) return xpath_node();

impl::xpath_context c(n, 1, 1);
		impl::xpath_stack_data sd;

#ifdef PUGIXML_NO_EXCEPTIONS
		if (setjmp(sd.error_handler)) return xpath_node();
	#endif

impl::xpath_node_set_raw r = root->eval_node_set(c, sd.stack, impl::nodeset_eval_first);

return r.first();
	}

PUGI__FN const xpath_parse_result& xpath_query::result() const
	{
		return _result;
	}

PUGI__FN static void unspecified_bool_xpath_query(xpath_query***)
	{
	}

PUGI__FN xpath_query::operator xpath_query::unspecified_bool_type() const
	{
		return _impl ? unspecified_bool_xpath_query : 0;
	}

PUGI__FN bool xpath_query::operator!() const
	{
		return !_impl;
	}

PUGI__FN xpath_node xml_node::select_node(const char_t* query, xpath_variable_set* variables) const
	{
		xpath_query q(query, variables);
		return select_node(q);
	}

PUGI__FN xpath_node xml_node::select_node(const xpath_query& query) const
	{
		return query.evaluate_node(*this);
	}

PUGI__FN xpath_node_set xml_node::select_nodes(const char_t* query, xpath_variable_set* variables) const
	{
		xpath_query q(query, variables);
		return select_nodes(q);
	}

PUGI__FN xpath_node_set xml_node::select_nodes(const xpath_query& query) const
	{
		return query.evaluate_node_set(*this);
	}

PUGI__FN xpath_node xml_node::select_single_node(const char_t* query, xpath_variable_set* variables) const
	{
		xpath_query q(query, variables);
		return select_single_node(q);
	}

PUGI__FN xpath_node xml_node::select_single_node(const xpath_query& query) const
	{
		return query.evaluate_node(*this);
	}
}

#endif

#ifdef __BORLANDC__
#	pragma option pop
#endif

// Intel C++ does not properly keep warning state for function templates,
// so popping warning state at the end of translation unit leads to warnings in the middle.
#if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
#	pragma warning(pop)
#endif

// Undefine all local macros (makes sure we're not leaking macros in header-only mode)
#undef PUGI__NO_INLINE
#undef PUGI__UNLIKELY
#undef PUGI__STATIC_ASSERT
#undef PUGI__DMC_VOLATILE
#undef PUGI__MSVC_CRT_VERSION
#undef PUGI__NS_BEGIN
#undef PUGI__NS_END
#undef PUGI__FN
#undef PUGI__FN_NO_INLINE
#undef PUGI__GETHEADER_IMPL
#undef PUGI__GETPAGE_IMPL
#undef PUGI__GETPAGE
#undef PUGI__NODETYPE
#undef PUGI__IS_CHARTYPE_IMPL
#undef PUGI__IS_CHARTYPE
#undef PUGI__IS_CHARTYPEX
#undef PUGI__ENDSWITH
#undef PUGI__SKIPWS
#undef PUGI__OPTSET
#undef PUGI__PUSHNODE
#undef PUGI__POPNODE
#undef PUGI__SCANFOR
#undef PUGI__SCANWHILE
#undef PUGI__SCANWHILE_UNROLL
#undef PUGI__ENDSEG
#undef PUGI__THROW_ERROR
#undef PUGI__CHECK_ERROR

#endif

/**
 * Copyright (c) 2006-2016 Arseny Kapoulkine
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
07070100000010000081A400000286000000640000000159FFB9EB0000C750000000000000000000000000000000000000002900000000libSavitar-3.6.0/pugixml/src/pugixml.hpp/**
 * pugixml parser - version 1.8
 * --------------------------------------------------------
 * Copyright (C) 2006-2016, by Arseny Kapoulkine (arseny.kapoulkine@gmail.com)
 * Report bugs and download new versions at http://pugixml.org/
 *
 * This library is distributed under the MIT License. See notice at the end
 * of this file.
 *
 * This work is based on the pugxml parser, which is:
 * Copyright (C) 2003, by Kristen Wegner (kristen@tima.net)
 */

#ifndef PUGIXML_VERSION
// Define version macro; evaluates to major * 100 + minor so that it's safe to use in less-than comparisons
#	define PUGIXML_VERSION 180
#endif

// Include user configuration file (this can define various configuration macros)
#include "pugiconfig.hpp"

#ifndef HEADER_PUGIXML_HPP
#define HEADER_PUGIXML_HPP

// Include stddef.h for size_t and ptrdiff_t
#include <stddef.h>

// Include exception header for XPath
#if !defined(PUGIXML_NO_XPATH) && !defined(PUGIXML_NO_EXCEPTIONS)
#	include <exception>
#endif

// Include STL headers
#ifndef PUGIXML_NO_STL
#	include <iterator>
#	include <iosfwd>
#	include <string>
#endif

// Macro for deprecated features
#ifndef PUGIXML_DEPRECATED
#	if defined(__GNUC__)
#		define PUGIXML_DEPRECATED __attribute__((deprecated))
#	elif defined(_MSC_VER) && _MSC_VER >= 1300
#		define PUGIXML_DEPRECATED __declspec(deprecated)
#	else
#		define PUGIXML_DEPRECATED
#	endif
#endif

// If no API is defined, assume default
#ifndef PUGIXML_API
#	define PUGIXML_API
#endif

// If no API for classes is defined, assume default
#ifndef PUGIXML_CLASS
#	define PUGIXML_CLASS PUGIXML_API
#endif

// If no API for functions is defined, assume default
#ifndef PUGIXML_FUNCTION
#	define PUGIXML_FUNCTION PUGIXML_API
#endif

// If the platform is known to have long long support, enable long long functions
#ifndef PUGIXML_HAS_LONG_LONG
#	if __cplusplus >= 201103
#		define PUGIXML_HAS_LONG_LONG
#	elif defined(_MSC_VER) && _MSC_VER >= 1400
#		define PUGIXML_HAS_LONG_LONG
#	endif
#endif

// If the platform is known to have move semantics support, compile move ctor/operator implementation
#ifndef PUGIXML_HAS_MOVE
#	if __cplusplus >= 201103
#		define PUGIXML_HAS_MOVE
#	elif defined(_MSC_VER) && _MSC_VER >= 1600
#		define PUGIXML_HAS_MOVE
#	endif
#endif

// If C++ is 2011 or higher, add 'override' qualifiers
#ifndef PUGIXML_OVERRIDE
#	if __cplusplus >= 201103
#		define PUGIXML_OVERRIDE override
#	else
#		define PUGIXML_OVERRIDE
#	endif
#endif

// Character interface macros
#ifdef PUGIXML_WCHAR_MODE
#	define PUGIXML_TEXT(t) L ## t
#	define PUGIXML_CHAR wchar_t
#else
#	define PUGIXML_TEXT(t) t
#	define PUGIXML_CHAR char
#endif

namespace pugi
{
	// Character type used for all internal storage and operations; depends on PUGIXML_WCHAR_MODE
	typedef PUGIXML_CHAR char_t;

#ifndef PUGIXML_NO_STL
	// String type used for operations that work with STL string; depends on PUGIXML_WCHAR_MODE
	typedef std::basic_string<PUGIXML_CHAR, std::char_traits<PUGIXML_CHAR>, std::allocator<PUGIXML_CHAR> > string_t;
#endif
}

// The PugiXML namespace
namespace pugi
{
	// Tree node types
	enum xml_node_type
	{
		node_null,			// Empty (null) node handle
		node_document,		// A document tree's absolute root
		node_element,		// Element tag, i.e. '<node/>'
		node_pcdata,		// Plain character data, i.e. 'text'
		node_cdata,			// Character data, i.e. '<![CDATA[text]]>'
		node_comment,		// Comment tag, i.e. ''
		node_pi,			// Processing instruction, i.e. '<?name?>'
		node_declaration,	// Document declaration, i.e. '<?xml version="1.0"?>'
		node_doctype		// Document type declaration, i.e. '<!DOCTYPE doc>'
	};

// Parsing options

// Minimal parsing mode (equivalent to turning all other flags off).
	// Only elements and PCDATA sections are added to the DOM tree, no text conversions are performed.
	const unsigned int parse_minimal = 0x0000;

// This flag determines if processing instructions (node_pi) are added to the DOM tree. This flag is off by default.
	const unsigned int parse_pi = 0x0001;

// This flag determines if comments (node_comment) are added to the DOM tree. This flag is off by default.
	const unsigned int parse_comments = 0x0002;

// This flag determines if CDATA sections (node_cdata) are added to the DOM tree. This flag is on by default.
	const unsigned int parse_cdata = 0x0004;

// This flag determines if plain character data (node_pcdata) that consist only of whitespace are added to the DOM tree.
	// This flag is off by default; turning it on usually results in slower parsing and more memory consumption.
	const unsigned int parse_ws_pcdata = 0x0008;

// This flag determines if character and entity references are expanded during parsing. This flag is on by default.
	const unsigned int parse_escapes = 0x0010;

// This flag determines if EOL characters are normalized (converted to #xA) during parsing. This flag is on by default.
	const unsigned int parse_eol = 0x0020;

// This flag determines if attribute values are normalized using CDATA normalization rules during parsing. This flag is on by default.
	const unsigned int parse_wconv_attribute = 0x0040;

// This flag determines if attribute values are normalized using NMTOKENS normalization rules during parsing. This flag is off by default.
	const unsigned int parse_wnorm_attribute = 0x0080;

// This flag determines if document declaration (node_declaration) is added to the DOM tree. This flag is off by default.
	const unsigned int parse_declaration = 0x0100;

// This flag determines if document type declaration (node_doctype) is added to the DOM tree. This flag is off by default.
	const unsigned int parse_doctype = 0x0200;

// This flag determines if plain character data (node_pcdata) that is the only child of the parent node and that consists only
	// of whitespace is added to the DOM tree.
	// This flag is off by default; turning it on may result in slower parsing and more memory consumption.
	const unsigned int parse_ws_pcdata_single = 0x0400;

// This flag determines if leading and trailing whitespace is to be removed from plain character data. This flag is off by default.
	const unsigned int parse_trim_pcdata = 0x0800;

// This flag determines if plain character data that does not have a parent node is added to the DOM tree, and if an empty document
	// is a valid document. This flag is off by default.
	const unsigned int parse_fragment = 0x1000;

// This flag determines if plain character data is be stored in the parent element's value. This significantly changes the structure of
	// the document; this flag is only recommended for parsing documents with many PCDATA nodes in memory-constrained environments.
	// This flag is off by default.
	const unsigned int parse_embed_pcdata = 0x2000;

// The default parsing mode.
	// Elements, PCDATA and CDATA sections are added to the DOM tree, character/reference entities are expanded,
	// End-of-Line characters are normalized, attribute values are normalized using CDATA normalization rules.
	const unsigned int parse_default = parse_cdata | parse_escapes | parse_wconv_attribute | parse_eol;

// The full parsing mode.
	// Nodes of all types are added to the DOM tree, character/reference entities are expanded,
	// End-of-Line characters are normalized, attribute values are normalized using CDATA normalization rules.
	const unsigned int parse_full = parse_default | parse_pi | parse_comments | parse_declaration | parse_doctype;

// These flags determine the encoding of input data for XML document
	enum xml_encoding
	{
		encoding_auto,		// Auto-detect input encoding using BOM or < / <? detection; use UTF8 if BOM is not found
		encoding_utf8,		// UTF8 encoding
		encoding_utf16_le,	// Little-endian UTF16
		encoding_utf16_be,	// Big-endian UTF16
		encoding_utf16,		// UTF16 with native endianness
		encoding_utf32_le,	// Little-endian UTF32
		encoding_utf32_be,	// Big-endian UTF32
		encoding_utf32,		// UTF32 with native endianness
		encoding_wchar,		// The same encoding wchar_t has (either UTF16 or UTF32)
		encoding_latin1
	};

// Formatting flags

// Indent the nodes that are written to output stream with as many indentation strings as deep the node is in DOM tree. This flag is on by default.
	const unsigned int format_indent = 0x01;

// Write encoding-specific BOM to the output stream. This flag is off by default.
	const unsigned int format_write_bom = 0x02;

// Use raw output mode (no indentation and no line breaks are written). This flag is off by default.
	const unsigned int format_raw = 0x04;

// Omit default XML declaration even if there is no declaration in the document. This flag is off by default.
	const unsigned int format_no_declaration = 0x08;

// Don't escape attribute values and PCDATA contents. This flag is off by default.
	const unsigned int format_no_escapes = 0x10;

// Open file using text mode in xml_document::save_file. This enables special character (i.e. new-line) conversions on some systems. This flag is off by default.
	const unsigned int format_save_file_text = 0x20;

// Write every attribute on a new line with appropriate indentation. This flag is off by default.
	const unsigned int format_indent_attributes = 0x40;

// Don't output empty element tags, instead writing an explicit start and end tag even if there are no children. This flag is off by default.
	const unsigned int format_no_empty_element_tags = 0x80;

// The default set of formatting flags.
	// Nodes are indented depending on their depth in DOM tree, a default declaration is output if document has none.
	const unsigned int format_default = format_indent;

// Forward declarations
	struct xml_attribute_struct;
	struct xml_node_struct;

class xml_node_iterator;
	class xml_attribute_iterator;
	class xml_named_node_iterator;

class xml_tree_walker;

struct xml_parse_result;

class xml_node;

class xml_text;

#ifndef PUGIXML_NO_XPATH
	class xpath_node;
	class xpath_node_set;
	class xpath_query;
	class xpath_variable_set;
	#endif

// Range-based for loop support
	template <typename It> class xml_object_range
	{
	public:
		typedef It const_iterator;
		typedef It iterator;

xml_object_range(It b, It e): _begin(b), _end(e)
		{
		}

It begin() const { return _begin; }
		It end() const { return _end; }

private:
		It _begin, _end;
	};

// Writer interface for node printing (see xml_node::print)
	class PUGIXML_CLASS xml_writer
	{
	public:
		virtual ~xml_writer() {}

// Write memory chunk into stream/file/whatever
		virtual void write(const void* data, size_t size) = 0;
	};

// xml_writer implementation for FILE*
	class PUGIXML_CLASS xml_writer_file: public xml_writer
	{
	public:
		// Construct writer from a FILE* object; void* is used to avoid header dependencies on stdio
		xml_writer_file(void* file);

virtual void write(const void* data, size_t size) PUGIXML_OVERRIDE;

private:
		void* file;
	};

#ifndef PUGIXML_NO_STL
	// xml_writer implementation for streams
	class PUGIXML_CLASS xml_writer_stream: public xml_writer
	{
	public:
		// Construct writer from an output stream object
		xml_writer_stream(std::basic_ostream<char, std::char_traits<char> >& stream);
		xml_writer_stream(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& stream);

virtual void write(const void* data, size_t size) PUGIXML_OVERRIDE;

private:
		std::basic_ostream<char, std::char_traits<char> >* narrow_stream;
		std::basic_ostream<wchar_t, std::char_traits<wchar_t> >* wide_stream;
	};
	#endif

// A light-weight handle for manipulating attributes in DOM tree
	class PUGIXML_CLASS xml_attribute
	{
		friend class xml_attribute_iterator;
		friend class xml_node;

private:
		xml_attribute_struct* _attr;

typedef void (*unspecified_bool_type)(xml_attribute***);

public:
		// Default constructor. Constructs an empty attribute.
		xml_attribute();

// Constructs attribute from internal pointer
		explicit xml_attribute(xml_attribute_struct* attr);

// Safe bool conversion operator
		operator unspecified_bool_type() const;

// Borland C++ workaround
		bool operator!() const;

// Comparison operators (compares wrapped attribute pointers)
		bool operator==(const xml_attribute& r) const;
		bool operator!=(const xml_attribute& r) const;
		bool operator<(const xml_attribute& r) const;
		bool operator>(const xml_attribute& r) const;
		bool operator<=(const xml_attribute& r) const;
		bool operator>=(const xml_attribute& r) const;

// Check if attribute is empty
		bool empty() const;

// Get attribute name/value, or "" if attribute is empty
		const char_t* name() const;
		const char_t* value() const;

// Get attribute value, or the default value if attribute is empty
		const char_t* as_string(const char_t* def = PUGIXML_TEXT("")) const;

// Get attribute value as a number, or the default value if conversion did not succeed or attribute is empty
		int as_int(int def = 0) const;
		unsigned int as_uint(unsigned int def = 0) const;
		double as_double(double def = 0) const;
		float as_float(float def = 0) const;

#ifdef PUGIXML_HAS_LONG_LONG
		long long as_llong(long long def = 0) const;
		unsigned long long as_ullong(unsigned long long def = 0) const;
	#endif

// Get attribute value as bool (returns true if first character is in '1tTyY' set), or the default value if attribute is empty
		bool as_bool(bool def = false) const;

// Set attribute name/value (returns false if attribute is empty or there is not enough memory)
		bool set_name(const char_t* rhs);
		bool set_value(const char_t* rhs);

// Set attribute value with type conversion (numbers are converted to strings, boolean is converted to "true"/"false")
		bool set_value(int rhs);
		bool set_value(unsigned int rhs);
		bool set_value(long rhs);
		bool set_value(unsigned long rhs);
		bool set_value(double rhs);
		bool set_value(float rhs);
		bool set_value(bool rhs);

#ifdef PUGIXML_HAS_LONG_LONG
		bool set_value(long long rhs);
		bool set_value(unsigned long long rhs);
	#endif

// Set attribute value (equivalent to set_value without error checking)
		xml_attribute& operator=(const char_t* rhs);
		xml_attribute& operator=(int rhs);
		xml_attribute& operator=(unsigned int rhs);
		xml_attribute& operator=(long rhs);
		xml_attribute& operator=(unsigned long rhs);
		xml_attribute& operator=(double rhs);
		xml_attribute& operator=(float rhs);
		xml_attribute& operator=(bool rhs);

#ifdef PUGIXML_HAS_LONG_LONG
		xml_attribute& operator=(long long rhs);
		xml_attribute& operator=(unsigned long long rhs);
	#endif

// Get next/previous attribute in the attribute list of the parent node
		xml_attribute next_attribute() const;
		xml_attribute previous_attribute() const;

// Get hash value (unique for handles to the same object)
		size_t hash_value() const;

// Get internal pointer
		xml_attribute_struct* internal_object() const;
	};

#ifdef __BORLANDC__
	// Borland C++ workaround
	bool PUGIXML_FUNCTION operator&&(const xml_attribute& lhs, bool rhs);
	bool PUGIXML_FUNCTION operator||(const xml_attribute& lhs, bool rhs);
#endif

// A light-weight handle for manipulating nodes in DOM tree
	class PUGIXML_CLASS xml_node
	{
		friend class xml_attribute_iterator;
		friend class xml_node_iterator;
		friend class xml_named_node_iterator;

protected:
		xml_node_struct* _root;

typedef void (*unspecified_bool_type)(xml_node***);

public:
		// Default constructor. Constructs an empty node.
		xml_node();

// Constructs node from internal pointer
		explicit xml_node(xml_node_struct* p);

// Safe bool conversion operator
		operator unspecified_bool_type() const;

// Borland C++ workaround
		bool operator!() const;

// Comparison operators (compares wrapped node pointers)
		bool operator==(const xml_node& r) const;
		bool operator!=(const xml_node& r) const;
		bool operator<(const xml_node& r) const;
		bool operator>(const xml_node& r) const;
		bool operator<=(const xml_node& r) const;
		bool operator>=(const xml_node& r) const;

// Check if node is empty.
		bool empty() const;

// Get node type
		xml_node_type type() const;

// Get node name, or "" if node is empty or it has no name
		const char_t* name() const;

// Get node value, or "" if node is empty or it has no value
		// Note: For <node>text</node> node.value() does not return "text"! Use child_value() or text() methods to access text inside nodes.
		const char_t* value() const;

// Get attribute list
		xml_attribute first_attribute() const;
		xml_attribute last_attribute() const;

// Get children list
		xml_node first_child() const;
		xml_node last_child() const;

// Get next/previous sibling in the children list of the parent node
		xml_node next_sibling() const;
		xml_node previous_sibling() const;

// Get parent node
		xml_node parent() const;

// Get root of DOM tree this node belongs to
		xml_node root() const;

// Get text object for the current node
		xml_text text() const;

// Get child, attribute or next/previous sibling with the specified name
		xml_node child(const char_t* name) const;
		xml_attribute attribute(const char_t* name) const;
		xml_node next_sibling(const char_t* name) const;
		xml_node previous_sibling(const char_t* name) const;

// Get attribute, starting the search from a hint (and updating hint so that searching for a sequence of attributes is fast)
		xml_attribute attribute(const char_t* name, xml_attribute& hint) const;

// Get child value of current node; that is, value of the first child node of type PCDATA/CDATA
		const char_t* child_value() const;

// Get child value of child with specified name. Equivalent to child(name).child_value().
		const char_t* child_value(const char_t* name) const;

// Set node name/value (returns false if node is empty, there is not enough memory, or node can not have name/value)
		bool set_name(const char_t* rhs);
		bool set_value(const char_t* rhs);

// Add attribute with specified name. Returns added attribute, or empty attribute on errors.
		xml_attribute append_attribute(const char_t* name);
		xml_attribute prepend_attribute(const char_t* name);
		xml_attribute insert_attribute_after(const char_t* name, const xml_attribute& attr);
		xml_attribute insert_attribute_before(const char_t* name, const xml_attribute& attr);

// Add a copy of the specified attribute. Returns added attribute, or empty attribute on errors.
		xml_attribute append_copy(const xml_attribute& proto);
		xml_attribute prepend_copy(const xml_attribute& proto);
		xml_attribute insert_copy_after(const xml_attribute& proto, const xml_attribute& attr);
		xml_attribute insert_copy_before(const xml_attribute& proto, const xml_attribute& attr);

// Add child node with specified type. Returns added node, or empty node on errors.
		xml_node append_child(xml_node_type type = node_element);
		xml_node prepend_child(xml_node_type type = node_element);
		xml_node insert_child_after(xml_node_type type, const xml_node& node);
		xml_node insert_child_before(xml_node_type type, const xml_node& node);

// Add child element with specified name. Returns added node, or empty node on errors.
		xml_node append_child(const char_t* name);
		xml_node prepend_child(const char_t* name);
		xml_node insert_child_after(const char_t* name, const xml_node& node);
		xml_node insert_child_before(const char_t* name, const xml_node& node);

// Add a copy of the specified node as a child. Returns added node, or empty node on errors.
		xml_node append_copy(const xml_node& proto);
		xml_node prepend_copy(const xml_node& proto);
		xml_node insert_copy_after(const xml_node& proto, const xml_node& node);
		xml_node insert_copy_before(const xml_node& proto, const xml_node& node);

// Move the specified node to become a child of this node. Returns moved node, or empty node on errors.
		xml_node append_move(const xml_node& moved);
		xml_node prepend_move(const xml_node& moved);
		xml_node insert_move_after(const xml_node& moved, const xml_node& node);
		xml_node insert_move_before(const xml_node& moved, const xml_node& node);

// Remove specified attribute
		bool remove_attribute(const xml_attribute& a);
		bool remove_attribute(const char_t* name);

// Remove specified child
		bool remove_child(const xml_node& n);
		bool remove_child(const char_t* name);

// Parses buffer as an XML document fragment and appends all nodes as children of the current node.
		// Copies/converts the buffer, so it may be deleted or changed after the function returns.
		// Note: append_buffer allocates memory that has the lifetime of the owning document; removing the appended nodes does not immediately reclaim that memory.
		xml_parse_result append_buffer(const void* contents, size_t size, unsigned int options = parse_default, xml_encoding encoding = encoding_auto);

// Find attribute using predicate. Returns first attribute for which predicate returned true.
		template <typename Predicate> xml_attribute find_attribute(Predicate pred) const
		{
			if (!_root) return xml_attribute();

for (xml_attribute attrib = first_attribute(); attrib; attrib = attrib.next_attribute())
				if (pred(attrib))
					return attrib;

return xml_attribute();
		}

// Find child node using predicate. Returns first child for which predicate returned true.
		template <typename Predicate> xml_node find_child(Predicate pred) const
		{
			if (!_root) return xml_node();

for (xml_node node = first_child(); node; node = node.next_sibling())
				if (pred(node))
					return node;

return xml_node();
		}

// Find node from subtree using predicate. Returns first node from subtree (depth-first), for which predicate returned true.
		template <typename Predicate> xml_node find_node(Predicate pred) const
		{
			if (!_root) return xml_node();

xml_node cur = first_child();

while (cur._root && cur._root != _root)
			{
				if (pred(cur)) return cur;

if (cur.first_child()) cur = cur.first_child();
				else if (cur.next_sibling()) cur = cur.next_sibling();
				else
				{
					while (!cur.next_sibling() && cur._root != _root) cur = cur.parent();

if (cur._root != _root) cur = cur.next_sibling();
				}
			}

return xml_node();
		}

// Find child node by attribute name/value
		xml_node find_child_by_attribute(const char_t* name, const char_t* attr_name, const char_t* attr_value) const;
		xml_node find_child_by_attribute(const char_t* attr_name, const char_t* attr_value) const;

#ifndef PUGIXML_NO_STL
		// Get the absolute node path from root as a text string.
		string_t path(char_t delimiter = '/') const;
	#endif

// Search for a node by path consisting of node names and . or .. elements.
		xml_node first_element_by_path(const char_t* path, char_t delimiter = '/') const;

// Recursively traverse subtree with xml_tree_walker
		bool traverse(xml_tree_walker& walker);

#ifndef PUGIXML_NO_XPATH
		// Select single node by evaluating XPath query. Returns first node from the resulting node set.
		xpath_node select_node(const char_t* query, xpath_variable_set* variables = 0) const;
		xpath_node select_node(const xpath_query& query) const;

// Select node set by evaluating XPath query
		xpath_node_set select_nodes(const char_t* query, xpath_variable_set* variables = 0) const;
		xpath_node_set select_nodes(const xpath_query& query) const;

// (deprecated: use select_node instead) Select single node by evaluating XPath query.
		xpath_node select_single_node(const char_t* query, xpath_variable_set* variables = 0) const;
		xpath_node select_single_node(const xpath_query& query) const;

#endif

// Print subtree using a writer object
		void print(xml_writer& writer, const char_t* indent = PUGIXML_TEXT("\t"), unsigned int flags = format_default, xml_encoding encoding = encoding_auto, unsigned int depth = 0) const;

#ifndef PUGIXML_NO_STL
		// Print subtree to stream
		void print(std::basic_ostream<char, std::char_traits<char> >& os, const char_t* indent = PUGIXML_TEXT("\t"), unsigned int flags = format_default, xml_encoding encoding = encoding_auto, unsigned int depth = 0) const;
		void print(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& os, const char_t* indent = PUGIXML_TEXT("\t"), unsigned int flags = format_default, unsigned int depth = 0) const;
	#endif

// Child nodes iterators
		typedef xml_node_iterator iterator;

iterator begin() const;
		iterator end() const;

// Attribute iterators
		typedef xml_attribute_iterator attribute_iterator;

attribute_iterator attributes_begin() const;
		attribute_iterator attributes_end() const;

// Range-based for support
		xml_object_range<xml_node_iterator> children() const;
		xml_object_range<xml_named_node_iterator> children(const char_t* name) const;
		xml_object_range<xml_attribute_iterator> attributes() const;

// Get node offset in parsed file/string (in char_t units) for debugging purposes
		ptrdiff_t offset_debug() const;

// Get hash value (unique for handles to the same object)
		size_t hash_value() const;

// Get internal pointer
		xml_node_struct* internal_object() const;
	};

#ifdef __BORLANDC__
	// Borland C++ workaround
	bool PUGIXML_FUNCTION operator&&(const xml_node& lhs, bool rhs);
	bool PUGIXML_FUNCTION operator||(const xml_node& lhs, bool rhs);
#endif

// A helper for working with text inside PCDATA nodes
	class PUGIXML_CLASS xml_text
	{
		friend class xml_node;

xml_node_struct* _root;

typedef void (*unspecified_bool_type)(xml_text***);

explicit xml_text(xml_node_struct* root);

xml_node_struct* _data_new();
		xml_node_struct* _data() const;

public:
		// Default constructor. Constructs an empty object.
		xml_text();

// Safe bool conversion operator
		operator unspecified_bool_type() const;

// Borland C++ workaround
		bool operator!() const;

// Check if text object is empty
		bool empty() const;

// Get text, or "" if object is empty
		const char_t* get() const;

// Get text, or the default value if object is empty
		const char_t* as_string(const char_t* def = PUGIXML_TEXT("")) const;

// Get text as a number, or the default value if conversion did not succeed or object is empty
		int as_int(int def = 0) const;
		unsigned int as_uint(unsigned int def = 0) const;
		double as_double(double def = 0) const;
		float as_float(float def = 0) const;

#ifdef PUGIXML_HAS_LONG_LONG
		long long as_llong(long long def = 0) const;
		unsigned long long as_ullong(unsigned long long def = 0) const;
	#endif

// Get text as bool (returns true if first character is in '1tTyY' set), or the default value if object is empty
		bool as_bool(bool def = false) const;

// Set text (returns false if object is empty or there is not enough memory)
		bool set(const char_t* rhs);

// Set text with type conversion (numbers are converted to strings, boolean is converted to "true"/"false")
		bool set(int rhs);
		bool set(unsigned int rhs);
		bool set(long rhs);
		bool set(unsigned long rhs);
		bool set(double rhs);
		bool set(float rhs);
		bool set(bool rhs);

#ifdef PUGIXML_HAS_LONG_LONG
		bool set(long long rhs);
		bool set(unsigned long long rhs);
	#endif

// Set text (equivalent to set without error checking)
		xml_text& operator=(const char_t* rhs);
		xml_text& operator=(int rhs);
		xml_text& operator=(unsigned int rhs);
		xml_text& operator=(long rhs);
		xml_text& operator=(unsigned long rhs);
		xml_text& operator=(double rhs);
		xml_text& operator=(float rhs);
		xml_text& operator=(bool rhs);

#ifdef PUGIXML_HAS_LONG_LONG
		xml_text& operator=(long long rhs);
		xml_text& operator=(unsigned long long rhs);
	#endif

// Get the data node (node_pcdata or node_cdata) for this object
		xml_node data() const;
	};

#ifdef __BORLANDC__
	// Borland C++ workaround
	bool PUGIXML_FUNCTION operator&&(const xml_text& lhs, bool rhs);
	bool PUGIXML_FUNCTION operator||(const xml_text& lhs, bool rhs);
#endif

// Child node iterator (a bidirectional iterator over a collection of xml_node)
	class PUGIXML_CLASS xml_node_iterator
	{
		friend class xml_node;

private:
		mutable xml_node _wrap;
		xml_node _parent;

xml_node_iterator(xml_node_struct* ref, xml_node_struct* parent);

public:
		// Iterator traits
		typedef ptrdiff_t difference_type;
		typedef xml_node value_type;
		typedef xml_node* pointer;
		typedef xml_node& reference;

#ifndef PUGIXML_NO_STL
		typedef std::bidirectional_iterator_tag iterator_category;
	#endif

// Default constructor
		xml_node_iterator();

// Construct an iterator which points to the specified node
		xml_node_iterator(const xml_node& node);

// Iterator operators
		bool operator==(const xml_node_iterator& rhs) const;
		bool operator!=(const xml_node_iterator& rhs) const;

xml_node& operator*() const;
		xml_node* operator->() const;

const xml_node_iterator& operator++();
		xml_node_iterator operator++(int);

const xml_node_iterator& operator--();
		xml_node_iterator operator--(int);
	};

// Attribute iterator (a bidirectional iterator over a collection of xml_attribute)
	class PUGIXML_CLASS xml_attribute_iterator
	{
		friend class xml_node;

private:
		mutable xml_attribute _wrap;
		xml_node _parent;

xml_attribute_iterator(xml_attribute_struct* ref, xml_node_struct* parent);

public:
		// Iterator traits
		typedef ptrdiff_t difference_type;
		typedef xml_attribute value_type;
		typedef xml_attribute* pointer;
		typedef xml_attribute& reference;

#ifndef PUGIXML_NO_STL
		typedef std::bidirectional_iterator_tag iterator_category;
	#endif

// Default constructor
		xml_attribute_iterator();

// Construct an iterator which points to the specified attribute
		xml_attribute_iterator(const xml_attribute& attr, const xml_node& parent);

// Iterator operators
		bool operator==(const xml_attribute_iterator& rhs) const;
		bool operator!=(const xml_attribute_iterator& rhs) const;

xml_attribute& operator*() const;
		xml_attribute* operator->() const;

const xml_attribute_iterator& operator++();
		xml_attribute_iterator operator++(int);

const xml_attribute_iterator& operator--();
		xml_attribute_iterator operator--(int);
	};

// Named node range helper
	class PUGIXML_CLASS xml_named_node_iterator
	{
		friend class xml_node;

public:
		// Iterator traits
		typedef ptrdiff_t difference_type;
		typedef xml_node value_type;
		typedef xml_node* pointer;
		typedef xml_node& reference;

#ifndef PUGIXML_NO_STL
		typedef std::bidirectional_iterator_tag iterator_category;
	#endif

// Default constructor
		xml_named_node_iterator();

// Construct an iterator which points to the specified node
		xml_named_node_iterator(const xml_node& node, const char_t* name);

// Iterator operators
		bool operator==(const xml_named_node_iterator& rhs) const;
		bool operator!=(const xml_named_node_iterator& rhs) const;

xml_node& operator*() const;
		xml_node* operator->() const;

const xml_named_node_iterator& operator++();
		xml_named_node_iterator operator++(int);

const xml_named_node_iterator& operator--();
		xml_named_node_iterator operator--(int);

private:
		mutable xml_node _wrap;
		xml_node _parent;
		const char_t* _name;

xml_named_node_iterator(xml_node_struct* ref, xml_node_struct* parent, const char_t* name);
	};

// Abstract tree walker class (see xml_node::traverse)
	class PUGIXML_CLASS xml_tree_walker
	{
		friend class xml_node;

private:
		int _depth;

protected:
		// Get current traversal depth
		int depth() const;

public:
		xml_tree_walker();
		virtual ~xml_tree_walker();

// Callback that is called when traversal begins
		virtual bool begin(xml_node& node);

// Callback that is called for each node traversed
		virtual bool for_each(xml_node& node) = 0;

// Callback that is called when traversal ends
		virtual bool end(xml_node& node);
	};

// Parsing status, returned as part of xml_parse_result object
	enum xml_parse_status
	{
		status_ok = 0,				// No error

status_file_not_found,		// File was not found during load_file()
		status_io_error,			// Error reading from file/stream
		status_out_of_memory,		// Could not allocate memory
		status_internal_error,		// Internal error occurred

status_unrecognized_tag,	// Parser could not determine tag type

status_bad_pi,				// Parsing error occurred while parsing document declaration/processing instruction
		status_bad_comment,			// Parsing error occurred while parsing comment
		status_bad_cdata,			// Parsing error occurred while parsing CDATA section
		status_bad_doctype,			// Parsing error occurred while parsing document type declaration
		status_bad_pcdata,			// Parsing error occurred while parsing PCDATA section
		status_bad_start_element,	// Parsing error occurred while parsing start element tag
		status_bad_attribute,		// Parsing error occurred while parsing element attribute
		status_bad_end_element,		// Parsing error occurred while parsing end element tag
		status_end_element_mismatch,// There was a mismatch of start-end tags (closing tag had incorrect name, some tag was not closed or there was an excessive closing tag)

status_append_invalid_root,	// Unable to append nodes since root type is not node_element or node_document (exclusive to xml_node::append_buffer)

status_no_document_element	// Parsing resulted in a document without element nodes
	};

// Parsing result
	struct PUGIXML_CLASS xml_parse_result
	{
		// Parsing status (see xml_parse_status)
		xml_parse_status status;

// Last parsed offset (in char_t units from start of input data)
		ptrdiff_t offset;

// Source document encoding
		xml_encoding encoding;

// Default constructor, initializes object to failed state
		xml_parse_result();

// Cast to bool operator
		operator bool() const;

// Get error description
		const char* description() const;
	};

// Document class (DOM tree root)
	class PUGIXML_CLASS xml_document: public xml_node
	{
	private:
		char_t* _buffer;

char _memory[192];

// Non-copyable semantics
		xml_document(const xml_document&);
		xml_document& operator=(const xml_document&);

void _create();
		void _destroy();

public:
		// Default constructor, makes empty document
		xml_document();

// Destructor, invalidates all node/attribute handles to this document
		~xml_document();

// Removes all nodes, leaving the empty document
		void reset();

// Removes all nodes, then copies the entire contents of the specified document
		void reset(const xml_document& proto);

#ifndef PUGIXML_NO_STL
		// Load document from stream.
		xml_parse_result load(std::basic_istream<char, std::char_traits<char> >& stream, unsigned int options = parse_default, xml_encoding encoding = encoding_auto);
		xml_parse_result load(std::basic_istream<wchar_t, std::char_traits<wchar_t> >& stream, unsigned int options = parse_default);
	#endif

// (deprecated: use load_string instead) Load document from zero-terminated string. No encoding conversions are applied.
		xml_parse_result load(const char_t* contents, unsigned int options = parse_default);

// Load document from zero-terminated string. No encoding conversions are applied.
		xml_parse_result load_string(const char_t* contents, unsigned int options = parse_default);

// Load document from file
		xml_parse_result load_file(const char* path, unsigned int options = parse_default, xml_encoding encoding = encoding_auto);
		xml_parse_result load_file(const wchar_t* path, unsigned int options = parse_default, xml_encoding encoding = encoding_auto);

// Load document from buffer. Copies/converts the buffer, so it may be deleted or changed after the function returns.
		xml_parse_result load_buffer(const void* contents, size_t size, unsigned int options = parse_default, xml_encoding encoding = encoding_auto);

// Load document from buffer, using the buffer for in-place parsing (the buffer is modified and used for storage of document data).
		// You should ensure that buffer data will persist throughout the document's lifetime, and free the buffer memory manually once document is destroyed.
		xml_parse_result load_buffer_inplace(void* contents, size_t size, unsigned int options = parse_default, xml_encoding encoding = encoding_auto);

// Load document from buffer, using the buffer for in-place parsing (the buffer is modified and used for storage of document data).
		// You should allocate the buffer with pugixml allocation function; document will free the buffer when it is no longer needed (you can't use it anymore).
		xml_parse_result load_buffer_inplace_own(void* contents, size_t size, unsigned int options = parse_default, xml_encoding encoding = encoding_auto);

// Save XML document to writer (semantics is slightly different from xml_node::print, see documentation for details).
		void save(xml_writer& writer, const char_t* indent = PUGIXML_TEXT("\t"), unsigned int flags = format_default, xml_encoding encoding = encoding_auto) const;

#ifndef PUGIXML_NO_STL
		// Save XML document to stream (semantics is slightly different from xml_node::print, see documentation for details).
		void save(std::basic_ostream<char, std::char_traits<char> >& stream, const char_t* indent = PUGIXML_TEXT("\t"), unsigned int flags = format_default, xml_encoding encoding = encoding_auto) const;
		void save(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& stream, const char_t* indent = PUGIXML_TEXT("\t"), unsigned int flags = format_default) const;
	#endif

// Save XML to file
		bool save_file(const char* path, const char_t* indent = PUGIXML_TEXT("\t"), unsigned int flags = format_default, xml_encoding encoding = encoding_auto) const;
		bool save_file(const wchar_t* path, const char_t* indent = PUGIXML_TEXT("\t"), unsigned int flags = format_default, xml_encoding encoding = encoding_auto) const;

// Get document element
		xml_node document_element() const;
	};

#ifndef PUGIXML_NO_XPATH
	// XPath query return type
	enum xpath_value_type
	{
		xpath_type_none,	  // Unknown type (query failed to compile)
		xpath_type_node_set,  // Node set (xpath_node_set)
		xpath_type_number,	  // Number
		xpath_type_string,	  // String
		xpath_type_boolean	  // Boolean
	};

// XPath parsing result
	struct PUGIXML_CLASS xpath_parse_result
	{
		// Error message (0 if no error)
		const char* error;

// Last parsed offset (in char_t units from string start)
		ptrdiff_t offset;

// Default constructor, initializes object to failed state
		xpath_parse_result();

// Cast to bool operator
		operator bool() const;

// Get error description
		const char* description() const;
	};

// A single XPath variable
	class PUGIXML_CLASS xpath_variable
	{
		friend class xpath_variable_set;

protected:
		xpath_value_type _type;
		xpath_variable* _next;

xpath_variable(xpath_value_type type);

// Non-copyable semantics
		xpath_variable(const xpath_variable&);
		xpath_variable& operator=(const xpath_variable&);

public:
		// Get variable name
		const char_t* name() const;

// Get variable type
		xpath_value_type type() const;

// Get variable value; no type conversion is performed, default value (false, NaN, empty string, empty node set) is returned on type mismatch error
		bool get_boolean() const;
		double get_number() const;
		const char_t* get_string() const;
		const xpath_node_set& get_node_set() const;

// Set variable value; no type conversion is performed, false is returned on type mismatch error
		bool set(bool value);
		bool set(double value);
		bool set(const char_t* value);
		bool set(const xpath_node_set& value);
	};

// A set of XPath variables
	class PUGIXML_CLASS xpath_variable_set
	{
	private:
		xpath_variable* _data[64];

void _assign(const xpath_variable_set& rhs);
		void _swap(xpath_variable_set& rhs);

xpath_variable* _find(const char_t* name) const;

static bool _clone(xpath_variable* var, xpath_variable** out_result);
		static void _destroy(xpath_variable* var);

public:
		// Default constructor/destructor
		xpath_variable_set();
		~xpath_variable_set();

// Copy constructor/assignment operator
		xpath_variable_set(const xpath_variable_set& rhs);
		xpath_variable_set& operator=(const xpath_variable_set& rhs);

#ifdef PUGIXML_HAS_MOVE
		// Move semantics support
		xpath_variable_set(xpath_variable_set&& rhs);
		xpath_variable_set& operator=(xpath_variable_set&& rhs);
	#endif

// Add a new variable or get the existing one, if the types match
		xpath_variable* add(const char_t* name, xpath_value_type type);

// Set value of an existing variable; no type conversion is performed, false is returned if there is no such variable or if types mismatch
		bool set(const char_t* name, bool value);
		bool set(const char_t* name, double value);
		bool set(const char_t* name, const char_t* value);
		bool set(const char_t* name, const xpath_node_set& value);

// Get existing variable by name
		xpath_variable* get(const char_t* name);
		const xpath_variable* get(const char_t* name) const;
	};

// A compiled XPath query object
	class PUGIXML_CLASS xpath_query
	{
	private:
		void* _impl;
		xpath_parse_result _result;

typedef void (*unspecified_bool_type)(xpath_query***);

// Non-copyable semantics
		xpath_query(const xpath_query&);
		xpath_query& operator=(const xpath_query&);

public:
		// Construct a compiled object from XPath expression.
		// If PUGIXML_NO_EXCEPTIONS is not defined, throws xpath_exception on compilation errors.
		explicit xpath_query(const char_t* query, xpath_variable_set* variables = 0);

// Constructor
		xpath_query();

// Destructor
		~xpath_query();

#ifdef PUGIXML_HAS_MOVE
		// Move semantics support
		xpath_query(xpath_query&& rhs);
		xpath_query& operator=(xpath_query&& rhs);
	#endif

// Get query expression return type
		xpath_value_type return_type() const;

// Evaluate expression as boolean value in the specified context; performs type conversion if necessary.
		// If PUGIXML_NO_EXCEPTIONS is not defined, throws std::bad_alloc on out of memory errors.
		bool evaluate_boolean(const xpath_node& n) const;

// Evaluate expression as double value in the specified context; performs type conversion if necessary.
		// If PUGIXML_NO_EXCEPTIONS is not defined, throws std::bad_alloc on out of memory errors.
		double evaluate_number(const xpath_node& n) const;

#ifndef PUGIXML_NO_STL
		// Evaluate expression as string value in the specified context; performs type conversion if necessary.
		// If PUGIXML_NO_EXCEPTIONS is not defined, throws std::bad_alloc on out of memory errors.
		string_t evaluate_string(const xpath_node& n) const;
	#endif

// Evaluate expression as string value in the specified context; performs type conversion if necessary.
		// At most capacity characters are written to the destination buffer, full result size is returned (includes terminating zero).
		// If PUGIXML_NO_EXCEPTIONS is not defined, throws std::bad_alloc on out of memory errors.
		// If PUGIXML_NO_EXCEPTIONS is defined, returns empty  set instead.
		size_t evaluate_string(char_t* buffer, size_t capacity, const xpath_node& n) const;

// Evaluate expression as node set in the specified context.
		// If PUGIXML_NO_EXCEPTIONS is not defined, throws xpath_exception on type mismatch and std::bad_alloc on out of memory errors.
		// If PUGIXML_NO_EXCEPTIONS is defined, returns empty node set instead.
		xpath_node_set evaluate_node_set(const xpath_node& n) const;

// Evaluate expression as node set in the specified context.
		// Return first node in document order, or empty node if node set is empty.
		// If PUGIXML_NO_EXCEPTIONS is not defined, throws xpath_exception on type mismatch and std::bad_alloc on out of memory errors.
		// If PUGIXML_NO_EXCEPTIONS is defined, returns empty node instead.
		xpath_node evaluate_node(const xpath_node& n) const;

// Get parsing result (used to get compilation errors in PUGIXML_NO_EXCEPTIONS mode)
		const xpath_parse_result& result() const;

// Safe bool conversion operator
		operator unspecified_bool_type() const;

// Borland C++ workaround
		bool operator!() const;
	};

#ifndef PUGIXML_NO_EXCEPTIONS
	// XPath exception class
	class PUGIXML_CLASS xpath_exception: public std::exception
	{
	private:
		xpath_parse_result _result;

public:
		// Construct exception from parse result
		explicit xpath_exception(const xpath_parse_result& result);

// Get error message
		virtual const char* what() const throw() PUGIXML_OVERRIDE;

// Get parse result
		const xpath_parse_result& result() const;
	};
	#endif

// XPath node class (either xml_node or xml_attribute)
	class PUGIXML_CLASS xpath_node
	{
	private:
		xml_node _node;
		xml_attribute _attribute;

typedef void (*unspecified_bool_type)(xpath_node***);

public:
		// Default constructor; constructs empty XPath node
		xpath_node();

// Construct XPath node from XML node/attribute
		xpath_node(const xml_node& node);
		xpath_node(const xml_attribute& attribute, const xml_node& parent);

// Get node/attribute, if any
		xml_node node() const;
		xml_attribute attribute() const;

// Get parent of contained node/attribute
		xml_node parent() const;

// Safe bool conversion operator
		operator unspecified_bool_type() const;

// Borland C++ workaround
		bool operator!() const;

// Comparison operators
		bool operator==(const xpath_node& n) const;
		bool operator!=(const xpath_node& n) const;
	};

#ifdef __BORLANDC__
	// Borland C++ workaround
	bool PUGIXML_FUNCTION operator&&(const xpath_node& lhs, bool rhs);
	bool PUGIXML_FUNCTION operator||(const xpath_node& lhs, bool rhs);
#endif

// A fixed-size collection of XPath nodes
	class PUGIXML_CLASS xpath_node_set
	{
	public:
		// Collection type
		enum type_t
		{
			type_unsorted,			// Not ordered
			type_sorted,			// Sorted by document order (ascending)
			type_sorted_reverse		// Sorted by document order (descending)
		};

// Constant iterator type
		typedef const xpath_node* const_iterator;

// We define non-constant iterator to be the same as constant iterator so that various generic algorithms (i.e. boost foreach) work
		typedef const xpath_node* iterator;

// Default constructor. Constructs empty set.
		xpath_node_set();

// Constructs a set from iterator range; data is not checked for duplicates and is not sorted according to provided type, so be careful
		xpath_node_set(const_iterator begin, const_iterator end, type_t type = type_unsorted);

// Destructor
		~xpath_node_set();

// Copy constructor/assignment operator
		xpath_node_set(const xpath_node_set& ns);
		xpath_node_set& operator=(const xpath_node_set& ns);

#ifdef PUGIXML_HAS_MOVE
		// Move semantics support
		xpath_node_set(xpath_node_set&& rhs);
		xpath_node_set& operator=(xpath_node_set&& rhs);
	#endif

// Get collection type
		type_t type() const;

// Get collection size
		size_t size() const;

// Indexing operator
		const xpath_node& operator[](size_t index) const;

// Collection iterators
		const_iterator begin() const;
		const_iterator end() const;

// Sort the collection in ascending/descending order by document order
		void sort(bool reverse = false);

// Get first node in the collection by document order
		xpath_node first() const;

// Check if collection is empty
		bool empty() const;

private:
		type_t _type;

xpath_node _storage;

xpath_node* _begin;
		xpath_node* _end;

void _assign(const_iterator begin, const_iterator end, type_t type);
		void _move(xpath_node_set& rhs);
	};
#endif

#ifndef PUGIXML_NO_STL
	// Convert wide string to UTF8
	std::basic_string<char, std::char_traits<char>, std::allocator<char> > PUGIXML_FUNCTION as_utf8(const wchar_t* str);
	std::basic_string<char, std::char_traits<char>, std::allocator<char> > PUGIXML_FUNCTION as_utf8(const std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >& str);

// Convert UTF8 to wide string
	std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > PUGIXML_FUNCTION as_wide(const char* str);
	std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > PUGIXML_FUNCTION as_wide(const std::basic_string<char, std::char_traits<char>, std::allocator<char> >& str);
#endif

// Memory allocation function interface; returns pointer to allocated memory or NULL on failure
	typedef void* (*allocation_function)(size_t size);

// Memory deallocation function interface
	typedef void (*deallocation_function)(void* ptr);

// Override default memory management functions. All subsequent allocations/deallocations will be performed via supplied functions.
	void PUGIXML_FUNCTION set_memory_management_functions(allocation_function allocate, deallocation_function deallocate);

// Get current memory management functions
	allocation_function PUGIXML_FUNCTION get_memory_allocation_function();
	deallocation_function PUGIXML_FUNCTION get_memory_deallocation_function();
}

#if !defined(PUGIXML_NO_STL) && (defined(_MSC_VER) || defined(__ICC))
namespace std
{
	// Workarounds for (non-standard) iterator category detection for older versions (MSVC7/IC8 and earlier)
	std::bidirectional_iterator_tag PUGIXML_FUNCTION _Iter_cat(const pugi::xml_node_iterator&);
	std::bidirectional_iterator_tag PUGIXML_FUNCTION _Iter_cat(const pugi::xml_attribute_iterator&);
	std::bidirectional_iterator_tag PUGIXML_FUNCTION _Iter_cat(const pugi::xml_named_node_iterator&);
}
#endif

#if !defined(PUGIXML_NO_STL) && defined(__SUNPRO_CC)
namespace std
{
	// Workarounds for (non-standard) iterator category detection
	std::bidirectional_iterator_tag PUGIXML_FUNCTION __iterator_category(const pugi::xml_node_iterator&);
	std::bidirectional_iterator_tag PUGIXML_FUNCTION __iterator_category(const pugi::xml_attribute_iterator&);
	std::bidirectional_iterator_tag PUGIXML_FUNCTION __iterator_category(const pugi::xml_named_node_iterator&);
}
#endif

#endif

// Make sure implementation is included in header-only mode
// Use macro expansion in #include to work around QMake (QTBUG-11923)
#if defined(PUGIXML_HEADER_ONLY) && !defined(PUGIXML_SOURCE)
#	define PUGIXML_SOURCE "pugixml.cpp"
#	include PUGIXML_SOURCE
#endif

/**
 * Copyright (c) 2006-2016 Arseny Kapoulkine
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
07070100000011000041ED00000286000000640000000259FFB9EB00000000000000000000000000000000000000000000001800000000libSavitar-3.6.0/python07070100000012000081A400000286000000640000000159FFB9EB0000045C000000000000000000000000000000000000002500000000libSavitar-3.6.0/python/MeshData.sip/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

class MeshData
{
    %TypeHeaderCode
    #include "MeshData.h"
    %End
public:
    MeshData();
    virtual ~MeshData();
    bytearray getVerticesAsBytes();
    bytearray getFacesAsBytes();

bytearray getFlatVerticesAsBytes();

void setVerticesFromBytes(const bytearray& data);

void setFacesFromBytes(const bytearray& data);
};07070100000013000081A400000286000000640000000159FFB9EB00000484000000000000000000000000000000000000002200000000libSavitar-3.6.0/python/Scene.sip/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

class Scene
{
    %TypeHeaderCode
    #include "Scene.h"
    %End
public:
    Scene();
    virtual ~Scene();

std::vector< SceneNode *> getSceneNodes();
    std::vector<SceneNode*> getAllSceneNodes();

void addSceneNode(SceneNode* node /Transfer/);

std::map<std::string, std::string> getMetadata();

std::string getUnit();
    void setUnit(std::string unit);
};

07070100000014000081A400000286000000640000000159FFB9EB000004C3000000000000000000000000000000000000002600000000libSavitar-3.6.0/python/SceneNode.sip/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

class SceneNode
{
    %TypeHeaderCode
    #include "SceneNode.h"
    %End
public:
    SceneNode();
    virtual ~SceneNode();

MeshData& getMeshData();

std::vector<SceneNode*> getChildren();

std::string getTransformation();
    void setTransformation(std::string);

std::map<std::string, std::string> getSettings();
    void setSetting(std::string key, std::string value);

void addChild(SceneNode* child /Transfer/);
};

07070100000015000081A400000286000000640000000159FFB9EB000004E2000000000000000000000000000000000000002A00000000libSavitar-3.6.0/python/ThreeMFParser.sip/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

%Module(name = Savitar, call_super_init = True)

%Include Types.sip
%Include SceneNode.sip
%Include Scene.sip
%Include MeshData.sip

%ModuleHeaderCode
namespace Savitar{} //Ensure that the namespace already exists
using namespace Savitar;
%End

class ThreeMFParser
{
    %TypeHeaderCode
    #include "ThreeMFParser.h"
    %End

public:
    ThreeMFParser();
    virtual ~ThreeMFParser();
    Scene parse(std::string xml_string);
    std::string sceneToString(Scene scene);
};07070100000016000081A400000286000000640000000159FFB9EB00002E86000000000000000000000000000000000000002200000000libSavitar-3.6.0/python/Types.sip/*
 * This file is part of libSavitar.
 *
 * Parts of this code have been copied from libArcus
 * Copyright (C) 2016 Ultimaker b.v. <a.hiemstra@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * Convert a python str object to a std::string.
 */
%MappedType std::string
{
    %TypeHeaderCode
    #include <string>
    %End

%ConvertFromTypeCode // From C++ to python
        PyObject* newstring;
        newstring = PyUnicode_DecodeUTF8(sipCpp->c_str(), sipCpp->length(), NULL);
        if(newstring == NULL)
        {
            PyErr_Clear();
            newstring = PyBytes_FromString(sipCpp->c_str());
        }
        return newstring;
    %End

%ConvertToTypeCode // From python to C++
        // Allow a Python string (or a unicode string) whenever a string is
        // expected.
        // If argument is a Unicode string, just decode it to UTF-8
        // If argument is a Python string, assume it's UTF-8
        if (sipIsErr == NULL)
        {
            return (PyBytes_Check(sipPy) || PyUnicode_Check(sipPy));
        }

if (sipPy == Py_None)
        {
            *sipCppPtr = new std::string;
            return 1;
        }

if (PyUnicode_Check(sipPy))
        {
            PyObject* s = PyUnicode_AsEncodedString(sipPy, "UTF-8", "");
            *sipCppPtr = new std::string(PyBytes_AS_STRING(s));
            Py_DECREF(s);
            return 1;
        }

if (PyBytes_Check(sipPy))
        {
            *sipCppPtr = new std::string(PyBytes_AS_STRING(sipPy));
            return 1;
        }
        return 0;
    %End
};

/**
 * Convert a list filled with SceneNodes to a vector with SceneNodes.
 */
%MappedType std::vector<SceneNode*>
{
    %TypeHeaderCode
    #include <vector>
    %End

%ConvertFromTypeCode // From C++ to python
        PyObject *result_list = PyList_New(sipCpp -> size());

// Create the Python list of the correct length.
        if (!result_list)
        {
            return NULL;
        }

// Go through each element in the C++ instance and convert it to a
        // wrapped P2d.
        for (int i = 0; i < (int)sipCpp->size(); ++i)
        {
            SceneNode *cpp = new SceneNode(*sipCpp->at(i));
            PyObject *pobj = sipConvertFromInstance(cpp, sipClass_SceneNode, sipTransferObj);

// Get the Python wrapper for the Type instance, creating a new
            // one if necessary, and handle any ownership transfer.
            if (!pobj)
            {
                // There was an error so garbage collect the Python list.
                Py_DECREF(result_list);
                return NULL;
            }

// Add the wrapper to the list.
            PyList_SET_ITEM(result_list, i, pobj);
        }

// Return the Python list.
        return result_list;
    %End

%ConvertToTypeCode // From python to C++
        // Check if type is compatible
        if (!sipIsErr)
        {
            // Must be any iterable
            PyObject *i = PyObject_GetIter(sipPy);
            bool iterable = (i != NULL);
            Py_XDECREF(i);
            return iterable;
        }

// Iterate over the object
        PyObject *iterator = PyObject_GetIter(sipPy);
        PyObject *item;

std::vector<SceneNode*> *result_vector = new std::vector<SceneNode*>();

while ((item = PyIter_Next(iterator)))
        {
            if (!sipCanConvertToInstance(item, sipClass_SceneNode, SIP_NOT_NONE))
            {
                PyErr_Format(PyExc_TypeError, "object in iterable cannot be converted to SceneNode");
                *sipIsErr = 1;
                break;
            }

int state;
            SceneNode* p = reinterpret_cast<SceneNode*>(sipConvertToInstance(item, sipClass_SceneNode, 0, SIP_NOT_NONE, &state, sipIsErr));

if (!*sipIsErr)
            {
                result_vector->push_back(p);
            }

sipReleaseInstance(p, sipClass_SceneNode, state);
            Py_DECREF(item);
        }

Py_DECREF(iterator);

if (*sipIsErr)
        {
            delete result_vector;
            return 0;
        }

*sipCppPtr = result_vector;
        return sipGetState(sipTransferObj);
    %End
};

/**
 * Convert to and from byte arrays.
 * Uses the internal data vector directly to create/extract a PyBytes* instance.
 */
%MappedType bytearray
{
    %TypeHeaderCode
    #include <vector>
    #include <cstdint>
    #include "Types.h"
    %End

%ConvertFromTypeCode // From C++ to python
        return PyBytes_FromStringAndSize(reinterpret_cast<const char *>(sipCpp->data()), sipCpp->size());
    %End

%ConvertToTypeCode // From python to C++
        if (sipIsErr == NULL)
        {
            return (PyBytes_Check(sipPy));
        }

if (sipPy == Py_None)
        {
            *sipCppPtr = new bytearray;
            return 1;
        }

if (PyBytes_Check(sipPy))
        {
            uint8_t *buffer = reinterpret_cast<uint8_t *>(PyBytes_AS_STRING(sipPy));
            *sipCppPtr = new bytearray(buffer, buffer + PyBytes_GET_SIZE(sipPy));
            return 1;
        }
        return 0;
    %End
};

/**
 * SIP generic implementation for std::vector<TYPE>
 */
template<TYPE>
%MappedType std::vector<TYPE>
{
    %TypeHeaderCode
    #include <vector>
    %End

%ConvertFromTypeCode // From C++ to python
        PyObject *result_list = PyList_New(sipCpp -> size());

// Create the Python list of the correct length.
        if (!result_list)
        {
            return NULL;
        }

// Go through each element in the C++ instance and convert it to a
        // wrapped P2d.
        for (int i = 0; i < (int)sipCpp->size(); ++i)
        {
            TYPE *cpp = new TYPE(sipCpp->at(i));
            PyObject *pobj = sipConvertFromInstance(cpp, sipClass_TYPE, sipTransferObj);

// Add the wrapper to the list.
            PyList_SET_ITEM(result_list, i, pobj);
        }

// Return the Python list.
        return result_list;
    %End

// Iterate over the object
        PyObject *iterator = PyObject_GetIter(sipPy);
        PyObject *item;

std::vector<TYPE> *result_vector = new std::vector<TYPE>();

while ((item = PyIter_Next(iterator)))
        {
            if (!sipCanConvertToInstance(item, sipClass_TYPE, SIP_NOT_NONE))
            {
                PyErr_Format(PyExc_TypeError, "object in iterable cannot be converted to TYPE");
                *sipIsErr = 1;
                break;
            }

int state;
            TYPE* p = reinterpret_cast<TYPE*>(sipConvertToInstance(item, sipClass_TYPE, 0, SIP_NOT_NONE, &state, sipIsErr));

if (!*sipIsErr)
            {
                result_vector->push_back(*p);
            }

sipReleaseInstance(p, sipClass_TYPE, state);
            Py_DECREF(item);
        }

Py_DECREF(iterator);

if (*sipIsErr)
        {
            delete result_vector;
            return 0;
        }

*sipCppPtr = result_vector;
        return sipGetState(sipTransferObj);
    %End
};

/**
 * Convert a (python) dict with strings as keys and values to a map<string, string>.
 */
%MappedType std::map<std::string, std::string>
{
    %TypeHeaderCode
    #include <map>
    %End

%ConvertFromTypeCode // From C++ to python
        // Create the dictionary.
        PyObject *result_dict = PyDict_New();

if (!result_dict)
        {
            return NULL;
        }

// Set the dictionary elements.
        std::map<std::string, std::string>::const_iterator i = sipCpp->begin();

while (i != sipCpp->end())
        {
            std::string *key = new std::string((*i).first);
            std::string *value = new std::string((*i).second);

PyObject *key_object = sipConvertFromNewType(key, sipType_std_string, sipTransferObj);
            PyObject *value_object = sipConvertFromNewType(value, sipType_std_string, sipTransferObj);

if (key_object == NULL || value_object == NULL || PyDict_SetItem(result_dict, key_object, value_object) < 0)
            {
                Py_DECREF(result_dict);

if (key_object)
                {
                    Py_DECREF(key_object);
                }
                else
                {
                    delete key;
                }

if (value_object)
                {
                    Py_DECREF(value_object);
                }
                else
                {
                    delete value;
                }

return nullptr;
            }

Py_DECREF(key_object);
            Py_DECREF(value_object);

++i;
        }

return result_dict;
    %End

%ConvertToTypeCode // From python to C++
        PyObject *key_object, *value_object;
        SIP_SSIZE_T i = 0;

// Check the type if that is all that is required.
        if (sipIsErr == nullptr)
        {
            if (!PyDict_Check(sipPy))
            {
                return 0;
            }

while (PyDict_Next(sipPy, &i, &key_object, &value_object))
            {
                if (!sipCanConvertToType(key_object, sipType_std_string, SIP_NOT_NONE))
                {
                    return 0;
                }

if (!sipCanConvertToType(value_object, sipType_std_string, SIP_NOT_NONE))
                {
                    return 0;
                }
            }

return 1;
        }

std::map<std::string, std::string> *std_map = new std::map<std::string, std::string>;

while (PyDict_Next(sipPy, &i, &key_object, &value_object))
        {
            int key_state, value_state;

std::string *key = reinterpret_cast<std::string *>(sipConvertToType(key_object, sipType_std_string, sipTransferObj, SIP_NOT_NONE, &key_state, sipIsErr));
            std::string *value = reinterpret_cast<std::string *>(sipConvertToType(value_object, sipType_std_string, sipTransferObj, SIP_NOT_NONE, &value_state, sipIsErr));

if (*sipIsErr)
            {
                sipReleaseType(key, sipType_std_string, key_state);
                sipReleaseType(value, sipType_std_string, value_state);

delete std_map;
                return 0;
            }

(*std_map)[*key] = *value;

sipReleaseType(key, sipType_std_string, key_state);
            sipReleaseType(value, sipType_std_string, value_state);
        }

*sipCppPtr = std_map;

return sipGetState(sipTransferObj);
    %End
};
07070100000017000041ED00000286000000640000000259FFB9EB00000000000000000000000000000000000000000000001500000000libSavitar-3.6.0/src07070100000018000081A400000286000000640000000159FFB9EB00000437000000000000000000000000000000000000001E00000000libSavitar-3.6.0/src/Face.cpp/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "Face.h"

Face::Face(int v1, int v2, int v3)
{
    vertex_1_index = v1;
    vertex_2_index = v2;
    vertex_3_index = v3;
}

Face::~Face()
{

}

int Face::getV1()
{
    return vertex_1_index;
}

int Face::getV2()
{
    return vertex_2_index;
}

int Face::getV3()
{
    return vertex_3_index;
}
07070100000019000081A400000286000000640000000159FFB9EB0000045A000000000000000000000000000000000000001C00000000libSavitar-3.6.0/src/Face.h/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef FACE_H
#define FACE_H

class Face
{
public:
    /**
     * A face uses the index of 3 vertices to describe a triangle
     */
    Face(int v1, int v2, int v3);
    ~Face();

int getV1();
    int getV2();
    int getV3();

protected:
    int vertex_1_index;
    int vertex_2_index;
    int vertex_3_index;
};

#endif // FACE_H
0707010000001A000081A400000286000000640000000159FFB9EB00001C95000000000000000000000000000000000000002200000000libSavitar-3.6.0/src/MeshData.cpp/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "MeshData.h"
#include "../pugixml/src/pugixml.hpp"
#include <iostream>

using namespace Savitar;

MeshData::MeshData()
{

}

MeshData::~MeshData()
{

}

void MeshData::fillByXMLNode(pugi::xml_node xml_node)
{
    this->vertices.clear();
    this->faces.clear();

// TODO: Add error handling (what to do if there is no vertices object, etc)
    // Add every vertex.
    pugi::xml_node xml_vertices = xml_node.child("vertices");
    for(pugi::xml_node vertex = xml_vertices.child("vertex"); vertex; vertex = vertex.next_sibling("vertex"))
    {
        Vertex temp_vertex = Vertex(vertex.attribute("x").as_float(), vertex.attribute("y").as_float(), vertex.attribute("z").as_float());
        this->vertices.push_back(temp_vertex);
    }

// Add every face.
    pugi::xml_node xml_triangles = xml_node.child("triangles");
    for(pugi::xml_node face = xml_triangles.child("triangle"); face; face = face.next_sibling("triangle"))
    {
        Face temp_face = Face(face.attribute("v1").as_int(), face.attribute("v2").as_int(), face.attribute("v3").as_int());
        this->faces.push_back(temp_face);
    }
}

void MeshData::clear()
{
    this->faces.clear();
    this->vertices.clear();
}

bytearray MeshData::getVerticesAsBytes()
{
    bytearray vertices_data;

for(int i = 0; i < vertices.size(); i++)
    {
        float x = vertices.at(i).getX();
        float y = vertices.at(i).getY();
        float z = vertices.at(i).getZ();
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&x), reinterpret_cast<const uint8_t*>(&x) + sizeof(float));
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&y), reinterpret_cast<const uint8_t*>(&y) + sizeof(float));
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&z), reinterpret_cast<const uint8_t*>(&z) + sizeof(float));
    }
    return vertices_data;
}

bytearray MeshData::getFlatVerticesAsBytes()
{
    bytearray vertices_data;
    for(int i = 0; i < faces.size(); i++)
    {
        int v1 = faces.at(i).getV1();
        int v2 = faces.at(i).getV2();
        int v3 = faces.at(i).getV3();
        
        // Add vertices for face 1
        float x = vertices.at(v1).getX();
        float y = vertices.at(v1).getY();
        float z = vertices.at(v1).getZ();
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&x), reinterpret_cast<const uint8_t*>(&x) + sizeof(float));
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&y), reinterpret_cast<const uint8_t*>(&y) + sizeof(float));
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&z), reinterpret_cast<const uint8_t*>(&z) + sizeof(float));

// Add vertices for face 2
        x = vertices.at(v2).getX();
        y = vertices.at(v2).getY();
        z = vertices.at(v2).getZ();
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&x), reinterpret_cast<const uint8_t*>(&x) + sizeof(float));
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&y), reinterpret_cast<const uint8_t*>(&y) + sizeof(float));
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&z), reinterpret_cast<const uint8_t*>(&z) + sizeof(float));

// Add vertices for face 3
        x = vertices.at(v3).getX();
        y = vertices.at(v3).getY();
        z = vertices.at(v3).getZ();
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&x), reinterpret_cast<const uint8_t*>(&x) + sizeof(float));
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&y), reinterpret_cast<const uint8_t*>(&y) + sizeof(float));
        vertices_data.insert(vertices_data.end(), reinterpret_cast<const uint8_t*>(&z), reinterpret_cast<const uint8_t*>(&z) + sizeof(float));
    }
    return vertices_data;
}

bytearray MeshData::getFacesAsBytes()
{
    bytearray face_data;

for(int i = 0; i < faces.size(); i++)
    {
        int v1 = faces.at(i).getV1();
        int v2 = faces.at(i).getV2();
        int v3 = faces.at(i).getV3();
        face_data.insert(face_data.end(), reinterpret_cast<const uint8_t*>(&v1), reinterpret_cast<const uint8_t*>(&v1) + sizeof(int));
        face_data.insert(face_data.end(), reinterpret_cast<const uint8_t*>(&v2), reinterpret_cast<const uint8_t*>(&v2) + sizeof(int));
        face_data.insert(face_data.end(), reinterpret_cast<const uint8_t*>(&v3), reinterpret_cast<const uint8_t*>(&v3) + sizeof(int));
    }
    return face_data;
}

void MeshData::toXmlNode(pugi::xml_node& node)
{
    pugi::xml_node vertices_node = node.append_child("vertices");
    for(int i = 0; i < vertices.size(); i++)
    {
        pugi::xml_node vertex_node = vertices_node.append_child("vertex");
        vertex_node.append_attribute("x") = vertices.at(i).getX();
        vertex_node.append_attribute("y") = vertices.at(i).getY();
        vertex_node.append_attribute("z") = vertices.at(i).getZ();
    }

pugi::xml_node triangles_node = node.append_child("triangles");
    for(int i = 0; i < faces.size(); i++)
    {
        pugi::xml_node triangle_node = triangles_node.append_child("triangle");
        triangle_node.append_attribute("v1") = faces.at(i).getV1();
        triangle_node.append_attribute("v2") = faces.at(i).getV2();
        triangle_node.append_attribute("v3") = faces.at(i).getV3();
    }
}

void MeshData::setVerticesFromBytes(const bytearray& data)
{
    vertices.clear();
    const uint8_t* bytes = data.data();
    int num_bytes = data.size();
    int num_floats = num_bytes / sizeof(float);

//Interpret byte array as array of floats.
    const float* float_array = reinterpret_cast<const float*>(bytes);

for(int i = 0; i + 2 < num_floats; i +=3)
    {
        Vertex temp_vertex = Vertex(float_array[i], float_array[i + 1], float_array[i + 2]);
        this->vertices.push_back(temp_vertex);
    }
}

void MeshData::setFacesFromBytes(const bytearray& data)
{
    faces.clear();
    const uint8_t* bytes = data.data();
    int num_bytes = data.size();
    int num_ints = num_bytes / sizeof(int);

//Interpret byte array as array of ints.
    const int* int_array = reinterpret_cast<const int*>(bytes);

for(int i = 0; i + 2 < num_ints; i +=3)
    {
        Face temp_face = Face(int_array[i], int_array[i + 1], int_array[i + 2]);
        this->faces.push_back(temp_face);
    }
}

std::vector< Vertex > MeshData::getVertices()
{
    return vertices;
}

0707010000001B000081A400000286000000640000000159FFB9EB00000C1F000000000000000000000000000000000000002000000000libSavitar-3.6.0/src/MeshData.h/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MESHDATA_H
#define MESHDATA_H
#include "SavitarExport.h"
#include <vector>
#include <string>
#include <cstdint>

#include "Types.h"
#include "Vertex.h"
#include "Face.h"

// Forward declarations
namespace pugi
{
    class xml_node;
}

namespace Savitar
{
    class SAVITAR_EXPORT MeshData
    {
    public:
        /**
         * MeshData holds all data regarding a mesh (vertices, faces, etc).
         * It can be filled by means of a byte array by using setVerticesFromBytes or setFacesFromBytes.
         */
        MeshData();
        virtual ~MeshData();

/**
         * Set the data of this MeshData by giving it a xml node (An object node in 3mf)
         */
        void fillByXMLNode(pugi::xml_node xml_node);

/**
         * Serialise the meshData to xml_node
         */
        void toXmlNode(pugi::xml_node& xml_node);

/**
         * Return the vertices as flattend bytes.
         *
         * If there for example is a single vertex, it will return a byte array containing 3 floats (so 3 * 4 bytes)
         */
        bytearray getVerticesAsBytes();

/**
         * Return the faces as flattend bytes.
         *
         * If there for example is a single face, it will return a byte array containing 3 ints (so 3 * 4 bytes)
         */
        bytearray getFacesAsBytes();

/**
         * Instead of getting all unique vertices, this function returns a bytearray with 3 vertices per face.
         * This is usefull if you want to mimic the data type of STL files.
         */
        bytearray getFlatVerticesAsBytes();

/**
         * Set the vertices of the meshdata by bytearray (as set from python)
         *
         * For every vertex it's assumed that there are 12 bytes (3 floats * 4).
         */
        void setVerticesFromBytes(const bytearray& data);

/**
         * Set the faces of the meshdata by bytearray (as set from python)
         *
         * For every face it's assumed that there are 12 bytes (3 int * 4).
         */
        void setFacesFromBytes(const bytearray& data);

std::vector<Vertex> getVertices();

/**
         * Reset the data of the MeshData object.
         */
        void clear();
    protected:
        std::vector<Vertex> vertices;
        std::vector<Face> faces;
    };
}

#endif0707010000001C000081A400000286000000640000000159FFB9EB000003FB000000000000000000000000000000000000002500000000libSavitar-3.6.0/src/SavitarExport.h/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef SAVITAR_EXPORT_H
#define SAVITAR_EXPORT_H

#if _WIN32
    #ifdef MAKE_SAVITAR_LIB
        #define SAVITAR_EXPORT __declspec(dllexport)
    #else
        #define SAVITAR_EXPORT
    #endif
#else
    #define SAVITAR_EXPORT
#endif

#endif
0707010000001D000081A400000286000000640000000159FFB9EB0000113B000000000000000000000000000000000000001F00000000libSavitar-3.6.0/src/Scene.cpp/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "Scene.h"
#include "../pugixml/src/pugixml.hpp"
#include <iostream>
#include <string>
using namespace Savitar;

Scene::Scene()
{
    unit = "millimeter";
}

Scene::~Scene()
{

}

std::vector< SceneNode*> Scene::getSceneNodes()
{
    return this->scene_nodes;
}

void Scene::addSceneNode(SceneNode* node)
{
    if(node == nullptr)
    {
        return;
    }
    this->scene_nodes.push_back(node);
}

void Scene::fillByXMLNode(pugi::xml_node xml_node)
{
    unit = xml_node.attribute("unit").as_string();

pugi::xml_node resources = xml_node.child("resources");

// Handle metadata:
    for(pugi::xml_node metadata_node = xml_node.child("metadata"); metadata_node; metadata_node = metadata_node.next_sibling("metadata"))
    {
        setMetaDataEntry(metadata_node.attribute("name").as_string(), metadata_node.text().as_string());
    }

pugi::xml_node build = xml_node.child("build");
    for(pugi::xml_node item = build.child("item"); item; item = item.next_sibling("item"))
    {
        // Found a item in the build. The items are linked to objects by objectid.
        pugi::xml_node object_node = resources.find_child_by_attribute("object", "id", item.attribute("objectid").value());
        if(object_node)
        {
            SceneNode* temp_scene_node = createSceneNodeFromObject(xml_node, object_node);
            temp_scene_node->setTransformation(item.attribute("transform").as_string());
            scene_nodes.push_back(temp_scene_node);
        }
        else
        {
            // TODO: add proper error handling
            std::cout << "Could not find object by given ID" << std::endl;
        }
    }
}

SceneNode* Scene::createSceneNodeFromObject(pugi::xml_node root_node, pugi::xml_node object_node)
{
    pugi::xml_node components = object_node.child("components");
    SceneNode* scene_node = new SceneNode();
    scene_node->fillByXMLNode(object_node);

// We have to do the checking for children outside of the SceneNode creation itself, because it only has references.
    if(components)
    {
        for(pugi::xml_node component = components.child("component"); component; component = component.next_sibling("component"))
        {
            // This node has children. Add them one by one.
            pugi::xml_node child_object_node = root_node.child("resources").find_child_by_attribute("object", "id", component.attribute("objectid").value());
            if(child_object_node)
            {
                SceneNode* child_node = createSceneNodeFromObject(root_node, child_object_node);
                child_node->setTransformation(component.attribute("transform").as_string());
                scene_node->addChild(child_node);
            } else
            {
                // TODO: ADD proper error handling here.
                std::cout << "Child_object_node not found :( " << std::endl;
            }
        }
    }
    return scene_node;
}

std::vector<SceneNode*> Scene::getAllSceneNodes()
{
    std::vector<SceneNode*> all_nodes;
    all_nodes.insert(all_nodes.end(), scene_nodes.begin(), scene_nodes.end());
    for(SceneNode* scene_node: scene_nodes)
    {
        std::vector<SceneNode*> temp_children = scene_node->getAllChildren();
        all_nodes.insert(all_nodes.end(), temp_children.begin(), temp_children.end());
    }
    return all_nodes;
}

void Scene::setMetaDataEntry(std::string key, std::string value)
{
    metadata[key] = value;
}

std::string Scene::getUnit()
{
    return unit;
}

std::map< std::string, std::string > Scene::getMetadata()
{
    return metadata;
}

void Scene::setUnit(std::string unit)
{
    this->unit = unit;
}
0707010000001E000081A400000286000000640000000159FFB9EB00000BE6000000000000000000000000000000000000001D00000000libSavitar-3.6.0/src/Scene.h/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef SCENE_H
#define SCENE_H
#include "SavitarExport.h"
#include "SceneNode.h"

#include <vector> // For std::vector
#include <map> // For std::map
#include <string> // For std::string

// Forward declaration
namespace pugi
{
    class xml_node;
}

namespace Savitar
{
    class SAVITAR_EXPORT Scene
    {
    public:
        /**
         * A Scene is an object that holds a number of SceneNodes, but also has some meta data entries. It also defines a unit in which the data is expressed.
         */
        Scene();
        virtual ~Scene();

/**
         * Get the scene nodes in this scene.
         * \return The scene nodes that are in the scene.
         */
        std::vector<SceneNode*> getSceneNodes();

std::vector<SceneNode*> getAllSceneNodes();

/**
         * Add a scene node to the scene.
         * \param node The SceneNode to be added.
         */
        void addSceneNode(SceneNode* node);

/**
         * Set the data of this SceneNode by giving it a xml node
         */
        void fillByXMLNode(pugi::xml_node xml_node);

/**
         * Set a meta data entry of the scene.
         *
         * Note that this not adhere to the full 3mf spec yet. All keys are accepted.
         *
         * \param key The key of the meta data.
         * \param value The value of the meta data.
         */
        void setMetaDataEntry(std::string key, std::string value);

/**
         * Get all meta data entries
         */
        std::map<std::string, std::string> getMetadata();

/**
        * Get the unit (milimeter, inch, etc) of the scene.
        * This is in milimeter by default.
        */
        std::string getUnit();

void setUnit(std::string unit);

protected:
        std::vector< SceneNode*> scene_nodes;
        std::map<std::string, std::string> metadata;
        std::string unit;

/**
         * Used to recursively create SceneNode objects based on xml nodes.
         * Because 3mf uses references, we also need to provide the root_node, so it's know what the reference points to
         * \returns The created SceneNode.
         */
        SceneNode* createSceneNodeFromObject(pugi::xml_node root_node, pugi::xml_node object_node);
    };
}
#endif0707010000001F000081A400000286000000640000000159FFB9EB00000B7E000000000000000000000000000000000000002300000000libSavitar-3.6.0/src/SceneNode.cpp/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "SceneNode.h"
#include "../pugixml/src/pugixml.hpp"
#include <iostream>
using namespace Savitar;

SceneNode::SceneNode()
{

}

SceneNode::~SceneNode()
{

}

std::string SceneNode::getTransformation()
{
    return this->transformation;
}

void SceneNode::setTransformation(std::string transformation)
{
    this->transformation = transformation;
}

std::vector<SceneNode*> SceneNode::getChildren()
{
    return this->children;
}

void SceneNode::addChild(SceneNode* node)
{
    if(node == nullptr)
    {
        return;
    }
    this->children.push_back(node);
}

MeshData& SceneNode::getMeshData()
{
    return mesh_data;
}

void SceneNode::setMeshData(MeshData mesh_data)
{
    this->mesh_data = mesh_data;
}

void SceneNode::fillByXMLNode(pugi::xml_node xml_node)
{
    settings.clear();
    id = xml_node.attribute("id").as_string();

if(xml_node.child("mesh"))
    {
        mesh_data.clear();
        mesh_data.fillByXMLNode(xml_node.child("mesh"));
    }
    pugi::xml_node settings_node = xml_node.child("settings");
    if(settings_node)
    {
        for(pugi::xml_node setting = settings_node.child("setting"); setting; setting = setting.next_sibling("setting"))
        {
            std::string key = setting.attribute("key").as_string();
            std::string value = setting.text().as_string();
            settings[key] = value;
        }
    }
}

std::string SceneNode::getId()
{
    return this->id;
}

void SceneNode::setId(std::string id)
{
    this->id = id;
}

std::map< std::string, std::string > SceneNode::getSettings()
{
    return settings;
}

void SceneNode::setSetting(std::string key, std::string value)
{
    settings[key] = value;
}

std::vector< SceneNode*> SceneNode::getAllChildren()
{
    std::vector<SceneNode*> all_children;
    // Add all direct children to the result to return
    all_children.insert(all_children.end(), children.begin(), children.end());
    for(SceneNode* scene_node: children)
    {
        std::vector<SceneNode*> temp_children = scene_node->getAllChildren();
        all_children.insert(all_children.end(), temp_children.begin(), temp_children.end());
    }
    return all_children;
}

07070100000020000081A400000286000000640000000159FFB9EB000008A3000000000000000000000000000000000000002100000000libSavitar-3.6.0/src/SceneNode.h/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef SAVITAR_SCENENODE_H
#define SAVITAR_SCENENODE_H

#include "SavitarExport.h"
#include "MeshData.h"

#include <string>
#include <vector>
#include <map> // For std::map

namespace pugi
{
    class xml_node;
}

namespace Savitar
{
    class SAVITAR_EXPORT SceneNode
    {
    public:
        SceneNode();
        virtual ~SceneNode();

std::string getTransformation();
        void setTransformation(std::string);

std::vector<SceneNode*> getChildren();
        std::vector<SceneNode*> getAllChildren();
        void addChild(SceneNode* node);

MeshData& getMeshData();
        void setMeshData(MeshData mesh_data);

/**
         * Set the data of this SceneNode by giving it a xml node
         */
        void fillByXMLNode(pugi::xml_node xml_node);

/**
         * Get the (unique) identifier of the node.
         */
        std::string getId();

void setId(std::string id);

/**
         * Get the (per-object) settings attached to this SceneNode.
         * Note that this is part of the Cura Extension and not 3mf Core.
         */
        std::map<std::string, std::string> getSettings();

void setSetting(std::string key, std::string value);

protected:
        std::string transformation;
        std::vector<SceneNode*> children;
        MeshData mesh_data;
        std::map<std::string, std::string> settings;
        std::string id;
    };
}

#endif
07070100000021000081A400000286000000640000000159FFB9EB00000F46000000000000000000000000000000000000002700000000libSavitar-3.6.0/src/ThreeMFParser.cpp/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "ThreeMFParser.h"
#include "Scene.h"
#include <iostream>
#include <sstream>
#include <locale.h>

using namespace Savitar;

ThreeMFParser::ThreeMFParser()
{
    setlocale(LC_ALL, "C");
}

ThreeMFParser::~ThreeMFParser()
{

}

Scene ThreeMFParser::parse(std::string xml_string)
{
    pugi::xml_document document;
    pugi::xml_parse_result result = document.load_string(xml_string.c_str());

Scene scene;

scene.fillByXMLNode(document.child("model"));

return scene;
}

std::string ThreeMFParser::sceneToString(Scene scene)
{
    pugi::xml_document document;
    pugi::xml_node model_node = document.append_child("model");
    pugi::xml_node resources_node = model_node.append_child("resources");
    pugi::xml_node build_node = model_node.append_child("build");

model_node.append_attribute("unit") = scene.getUnit().c_str();
    model_node.append_attribute("xmlns") = "http://schemas.microsoft.com/3dmanufacturing/core/2015/02";
    model_node.append_attribute("xml:lang") ="en-US";

for(int i = 0; i < scene.getAllSceneNodes().size(); i++)
    {
        SceneNode* scene_node = scene.getAllSceneNodes().at(i);
        scene_node->setId(std::to_string(i + 1));
    }

for(SceneNode* scene_node: scene.getAllSceneNodes())
    {
        // Create item
        pugi::xml_node object = resources_node.append_child("object");
        object.append_attribute("id") = scene_node->getId().c_str();
        object.append_attribute("type") = "model";

if(scene_node->getMeshData().getVertices().size() != 0)
        {
            pugi::xml_node mesh = object.append_child("mesh");
            scene_node->getMeshData().toXmlNode(mesh);
        }

std::map<std::string, std::string> per_object_settings = scene_node->getSettings();
        if(!per_object_settings.empty())
        {
            pugi::xml_node settings = object.append_child("settings");
            for(const std::pair<std::string, std::string> setting_pair: per_object_settings)
            {
                pugi::xml_node setting = settings.append_child("setting");
                setting.append_attribute("key") = setting_pair.first.c_str();
                setting.text().set(setting_pair.second.c_str());
            }
        }

if(scene_node->getChildren().size() != 0)
        {
            pugi::xml_node components = object.append_child("components");
            for(SceneNode* child_scene_node: scene_node->getChildren())
            {
                pugi::xml_node component = components.append_child("component");
                component.append_attribute("objectid") = child_scene_node->getId().c_str();
                component.append_attribute("transform") = child_scene_node->getTransformation().c_str();
            }
        }
    }

for(SceneNode* scene_node: scene.getSceneNodes())
    {
        pugi::xml_node item = build_node.append_child("item");
        item.append_attribute("objectid") = scene_node->getId().c_str();
        item.append_attribute("transform") = scene_node->getTransformation().c_str();
    }

std::stringstream ss;
    document.save(ss);
    return ss.str();
}
07070100000022000081A400000286000000640000000159FFB9EB000005A0000000000000000000000000000000000000002500000000libSavitar-3.6.0/src/ThreeMFParser.h/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef THREEMFPARSER_H
#define THREEMFPARSER_H

#include "SavitarExport.h"
#include "SceneNode.h"
#include "../pugixml/src/pugixml.hpp"

#include <string>
namespace Savitar
{
    class Scene;

class SAVITAR_EXPORT ThreeMFParser
    {
    public:
        ThreeMFParser();
        virtual ~ThreeMFParser();

/**
         * Parse the string containing xml data that was obtained from 3D/3dmodel.model in a 3mf file
         * \param xml_string the xml string to be parsed by the 3mf parser.
         * \returns A filled Scene object
         */
        Scene parse(std::string xml_string);

std::string sceneToString(Scene scene);
    };
}
#endif07070100000023000081A400000286000000640000000159FFB9EB00000443000000000000000000000000000000000000001D00000000libSavitar-3.6.0/src/Types.h/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef SAVITAR_TYPES_H
#define SAVITAR_TYPES_H

#include <vector>
#include <cstdint>

namespace Savitar
{
    // Convenience typedef so uint can be used.
    typedef unsigned int uint;

// Dynamic array of bytes, defined here to increase code readability.
    typedef std::vector<uint8_t> bytearray;
}

#endif
07070100000024000081A400000286000000640000000159FFB9EB0000043D000000000000000000000000000000000000002000000000libSavitar-3.6.0/src/Vertex.cpp/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "Vertex.h"

using namespace Savitar;

Vertex::Vertex(float x, float y, float z)
{
    this->x = x;
    this->y = y;
    this->z = z;
}

Vertex::~Vertex()
{

}

float Vertex::getX()
{
    return this->x;
}

float Vertex::getY()
{
    return this->y;
}

float Vertex::getZ()
{
    return this->z;
}

07070100000025000081A400000286000000640000000159FFB9EB000004AB000000000000000000000000000000000000001E00000000libSavitar-3.6.0/src/Vertex.h/*
 * This file is part of libSavitar
 *
 * Copyright (C) 2017 Ultimaker b.v. <j.vankessel@ultimaker.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef VERTEX_H
#define VERTEX_H
#include "SavitarExport.h"

namespace Savitar
{
    class SAVITAR_EXPORT Vertex
    {
    public:
        /**
         * A vertex is a point in 3D space.
         */
        Vertex(float x, float y, float z);
        virtual ~Vertex();

float getX();
        float getY();
        float getZ();
    protected:
        float x;
        float y;
        float z;
    };
}

#endif07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!907 Blöcke

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File libSavitar-3.6.0.obscpio of Package libSavitar

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