Fixed build issue with SECURED=0 option

[platform/upstream/iotivity.git] / extlibs / rapidxml / rapidxml.hpp

#ifndef RAPIDXML_HPP_INCLUDED
#define RAPIDXML_HPP_INCLUDED

// Copyright (C) 2006, 2009 Marcin Kalicinski
// Version 1.13
// Revision $DateTime: 2009/05/13 01:46:17 $
//! \file rapidxml.hpp This file contains rapidxml parser and DOM implementation

// If standard library is disabled, user must provide implementations of required functions and typedefs
#if !defined(RAPIDXML_NO_STDLIB)
#include <cstdlib>      // For std::size_t
#include <cassert>      // For assert
#include <new>          // For placement new
#endif

// On MSVC, disable "conditional expression is constant" warning (level 4).
// This warning is almost impossible to avoid with certain types of templated code
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable:4127)   // Conditional expression is constant
#endif

///////////////////////////////////////////////////////////////////////////
// RAPIDXML_PARSE_ERROR

#if defined(RAPIDXML_NO_EXCEPTIONS)

#define RAPIDXML_PARSE_ERROR(what, where) { parse_error_handler(what, where); assert(0); }

namespace rapidxml
{
    //! When exceptions are disabled by defining RAPIDXML_NO_EXCEPTIONS,
    //! this function is called to notify user about the error.
    //! It must be defined by the user.
    //! <br><br>
    //! This function cannot return. If it does, the results are undefined.
    //! <br><br>
    //! A very simple definition might look like that:
    //! <pre>
    //! void %rapidxml::%parse_error_handler(const char *what, void *where)
    //! {
    //!     std::cout << "Parse error: " << what << "\n";
    //!     std::abort();
    //! }
    //! </pre>
    //! \param what Human readable description of the error.
    //! \param where Pointer to character data where error was detected.
    void parse_error_handler(const char *what, void *where);
}

#else

#include <exception>    // For std::exception

#define RAPIDXML_PARSE_ERROR(what, where) throw parse_error(what, where)

namespace rapidxml
{

    //! Parse error exception.
    //! This exception is thrown by the parser when an error occurs.
    //! Use what() function to get human-readable error message.
    //! Use where() function to get a pointer to position within source text where error was detected.
    //! <br><br>
    //! If throwing exceptions by the parser is undesirable,
    //! it can be disabled by defining RAPIDXML_NO_EXCEPTIONS macro before rapidxml.hpp is included.
    //! This will cause the parser to call rapidxml::parse_error_handler() function instead of throwing an exception.
    //! This function must be defined by the user.
    //! <br><br>
    //! This class derives from <code>std::exception</code> class.
    class parse_error: public std::exception
    {

        public:

            //! Constructs parse error
            parse_error(const char *what, void *where)
                : m_what(what)
                , m_where(where)
            {
            }

            //! Gets human readable description of error.
            //! \return Pointer to null terminated description of the error.
            virtual const char *what() const throw()
            {
                return m_what;
            }

            //! Gets pointer to character data where error happened.
            //! Ch should be the same as char type of xml_document that produced the error.
            //! \return Pointer to location within the parsed string where error occured.
            template<class Ch>
            Ch *where() const
            {
                return reinterpret_cast<Ch *>(m_where);
            }

        private:

            const char *m_what;
            void *m_where;

    };
}

#endif

///////////////////////////////////////////////////////////////////////////
// Pool sizes

#ifndef RAPIDXML_STATIC_POOL_SIZE
// Size of static memory block of memory_pool.
// Define RAPIDXML_STATIC_POOL_SIZE before including rapidxml.hpp if you want to override the default value.
// No dynamic memory allocations are performed by memory_pool until static memory is exhausted.
#define RAPIDXML_STATIC_POOL_SIZE (64 * 1024)
#endif

#ifndef RAPIDXML_DYNAMIC_POOL_SIZE
// Size of dynamic memory block of memory_pool.
// Define RAPIDXML_DYNAMIC_POOL_SIZE before including rapidxml.hpp if you want to override the default value.
// After the static block is exhausted, dynamic blocks with approximately this size are allocated by memory_pool.
#define RAPIDXML_DYNAMIC_POOL_SIZE (64 * 1024)
#endif

#ifndef RAPIDXML_ALIGNMENT
// Memory allocation alignment.
// Define RAPIDXML_ALIGNMENT before including rapidxml.hpp if you want to override the default value, which is the size of pointer.
// All memory allocations for nodes, attributes and strings will be aligned to this value.
// This must be a power of 2 and at least 1, otherwise memory_pool will not work.
#define RAPIDXML_ALIGNMENT sizeof(void *)
#endif

namespace rapidxml
{
    // Forward declarations
    template<class Ch> class xml_node;
    template<class Ch> class xml_attribute;
    template<class Ch> class xml_document;

    //! Enumeration listing all node types produced by the parser.
    //! Use xml_node::type() function to query node type.
    enum node_type
    {
        node_document,      //!< A document node. Name and value are empty.
        node_element,       //!< An element node. Name contains element name. Value contains text of first data node.
        node_data,          //!< A data node. Name is empty. Value contains data text.
        node_cdata,         //!< A CDATA node. Name is empty. Value contains data text.
        node_comment,       //!< A comment node. Name is empty. Value contains comment text.
        node_declaration,   //!< A declaration node. Name and value are empty. Declaration parameters (version, encoding and standalone) are in node attributes.
        node_doctype,       //!< A DOCTYPE node. Name is empty. Value contains DOCTYPE text.
        node_pi             //!< A PI node. Name contains target. Value contains instructions.
    };

    ///////////////////////////////////////////////////////////////////////
    // Parsing flags

    //! Parse flag instructing the parser to not create data nodes.
    //! Text of first data node will still be placed in value of parent element, unless rapidxml::parse_no_element_values flag is also specified.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_no_data_nodes = 0x1;

    //! Parse flag instructing the parser to not use text of first data node as a value of parent element.
    //! Can be combined with other flags by use of | operator.
    //! Note that child data nodes of element node take precendence over its value when printing.
    //! That is, if element has one or more child data nodes <em>and</em> a value, the value will be ignored.
    //! Use rapidxml::parse_no_data_nodes flag to prevent creation of data nodes if you want to manipulate data using values of elements.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_no_element_values = 0x2;

    //! Parse flag instructing the parser to not place zero terminators after strings in the source text.
    //! By default zero terminators are placed, modifying source text.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_no_string_terminators = 0x4;

    //! Parse flag instructing the parser to not translate entities in the source text.
    //! By default entities are translated, modifying source text.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_no_entity_translation = 0x8;

    //! Parse flag instructing the parser to disable UTF-8 handling and assume plain 8 bit characters.
    //! By default, UTF-8 handling is enabled.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_no_utf8 = 0x10;

    //! Parse flag instructing the parser to create XML declaration node.
    //! By default, declaration node is not created.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_declaration_node = 0x20;

    //! Parse flag instructing the parser to create comments nodes.
    //! By default, comment nodes are not created.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_comment_nodes = 0x40;

    //! Parse flag instructing the parser to create DOCTYPE node.
    //! By default, doctype node is not created.
    //! Although W3C specification allows at most one DOCTYPE node, RapidXml will silently accept documents with more than one.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_doctype_node = 0x80;

    //! Parse flag instructing the parser to create PI nodes.
    //! By default, PI nodes are not created.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_pi_nodes = 0x100;

    //! Parse flag instructing the parser to validate closing tag names.
    //! If not set, name inside closing tag is irrelevant to the parser.
    //! By default, closing tags are not validated.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_validate_closing_tags = 0x200;

    //! Parse flag instructing the parser to trim all leading and trailing whitespace of data nodes.
    //! By default, whitespace is not trimmed.
    //! This flag does not cause the parser to modify source text.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_trim_whitespace = 0x400;

    //! Parse flag instructing the parser to condense all whitespace runs of data nodes to a single space character.
    //! Trimming of leading and trailing whitespace of data is controlled by rapidxml::parse_trim_whitespace flag.
    //! By default, whitespace is not normalized.
    //! If this flag is specified, source text will be modified.
    //! Can be combined with other flags by use of | operator.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_normalize_whitespace = 0x800;

    // Compound flags

    //! Parse flags which represent default behaviour of the parser.
    //! This is always equal to 0, so that all other flags can be simply ored together.
    //! Normally there is no need to inconveniently disable flags by anding with their negated (~) values.
    //! This also means that meaning of each flag is a <i>negation</i> of the default setting.
    //! For example, if flag name is rapidxml::parse_no_utf8, it means that utf-8 is <i>enabled</i> by default,
    //! and using the flag will disable it.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_default = 0;

    //! A combination of parse flags that forbids any modifications of the source text.
    //! This also results in faster parsing. However, note that the following will occur:
    //! <ul>
    //! <li>names and values of nodes will not be zero terminated, you have to use xml_base::name_size() and xml_base::value_size() functions to determine where name and value ends</li>
    //! <li>entities will not be translated</li>
    //! <li>whitespace will not be normalized</li>
    //! </ul>
    //! See xml_document::parse() function.
    const int parse_non_destructive = parse_no_string_terminators | parse_no_entity_translation;

    //! A combination of parse flags resulting in fastest possible parsing, without sacrificing important data.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_fastest = parse_non_destructive | parse_no_data_nodes;

    //! A combination of parse flags resulting in largest amount of data being extracted.
    //! This usually results in slowest parsing.
    //! <br><br>
    //! See xml_document::parse() function.
    const int parse_full = parse_declaration_node | parse_comment_nodes | parse_doctype_node |
                           parse_pi_nodes | parse_validate_closing_tags;

    ///////////////////////////////////////////////////////////////////////
    // Internals

    //! \cond internal
    namespace internal
    {

        // Struct that contains lookup tables for the parser
        // It must be a template to allow correct linking (because it has static data members, which are defined in a header file).
        template<int Dummy>
        struct lookup_tables
        {
            static const unsigned char lookup_whitespace[256];              // Whitespace table
            static const unsigned char lookup_node_name[256];               // Node name table
            static const unsigned char lookup_text[256];                    // Text table
            static const unsigned char lookup_text_pure_no_ws[256];         // Text table
            static const unsigned char lookup_text_pure_with_ws[256];       // Text table
            static const unsigned char lookup_attribute_name[256];          // Attribute name table
            static const unsigned char
            lookup_attribute_data_1[256];        // Attribute data table with single quote
            static const unsigned char
            lookup_attribute_data_1_pure[256];   // Attribute data table with single quote
            static const unsigned char
            lookup_attribute_data_2[256];        // Attribute data table with double quotes
            static const unsigned char
            lookup_attribute_data_2_pure[256];   // Attribute data table with double quotes
            static const unsigned char lookup_digits[256];                  // Digits
            static const unsigned char
            lookup_upcase[256];                  // To uppercase conversion table for ASCII characters
        };

        // Find length of the string
        template<class Ch>
        inline std::size_t measure(const Ch *p)
        {
            const Ch *tmp = p;
            while (*tmp)
                ++tmp;
            return tmp - p;
        }

        // Compare strings for equality
        template<class Ch>
        inline bool compare(const Ch *p1, std::size_t size1, const Ch *p2, std::size_t size2,
                            bool case_sensitive)
        {
            if (size1 != size2)
                return false;
            if (case_sensitive)
            {
                for (const Ch *end = p1 + size1; p1 < end; ++p1, ++p2)
                    if (*p1 != *p2)
                        return false;
            }
            else
            {
                for (const Ch *end = p1 + size1; p1 < end; ++p1, ++p2)
                    if (lookup_tables<0>::lookup_upcase[static_cast<unsigned char>(*p1)] !=
                        lookup_tables<0>::lookup_upcase[static_cast<unsigned char>(*p2)])
                        return false;
            }
            return true;
        }
    }
    //! \endcond

    ///////////////////////////////////////////////////////////////////////
    // Memory pool

    //! This class is used by the parser to create new nodes and attributes, without overheads of dynamic memory allocation.
    //! In most cases, you will not need to use this class directly.
    //! However, if you need to create nodes manually or modify names/values of nodes,
    //! you are encouraged to use memory_pool of relevant xml_document to allocate the memory.
    //! Not only is this faster than allocating them by using <code>new</code> operator,
    //! but also their lifetime will be tied to the lifetime of document,
    //! possibly simplyfing memory management.
    //! <br><br>
    //! Call allocate_node() or allocate_attribute() functions to obtain new nodes or attributes from the pool.
    //! You can also call allocate_string() function to allocate strings.
    //! Such strings can then be used as names or values of nodes without worrying about their lifetime.
    //! Note that there is no <code>free()</code> function -- all allocations are freed at once when clear() function is called,
    //! or when the pool is destroyed.
    //! <br><br>
    //! It is also possible to create a standalone memory_pool, and use it
    //! to allocate nodes, whose lifetime will not be tied to any document.
    //! <br><br>
    //! Pool maintains <code>RAPIDXML_STATIC_POOL_SIZE</code> bytes of statically allocated memory.
    //! Until static memory is exhausted, no dynamic memory allocations are done.
    //! When static memory is exhausted, pool allocates additional blocks of memory of size <code>RAPIDXML_DYNAMIC_POOL_SIZE</code> each,
    //! by using global <code>new[]</code> and <code>delete[]</code> operators.
    //! This behaviour can be changed by setting custom allocation routines.
    //! Use set_allocator() function to set them.
    //! <br><br>
    //! Allocations for nodes, attributes and strings are aligned at <code>RAPIDXML_ALIGNMENT</code> bytes.
    //! This value defaults to the size of pointer on target architecture.
    //! <br><br>
    //! To obtain absolutely top performance from the parser,
    //! it is important that all nodes are allocated from a single, contiguous block of memory.
    //! Otherwise, cache misses when jumping between two (or more) disjoint blocks of memory can slow down parsing quite considerably.
    //! If required, you can tweak <code>RAPIDXML_STATIC_POOL_SIZE</code>, <code>RAPIDXML_DYNAMIC_POOL_SIZE</code> and <code>RAPIDXML_ALIGNMENT</code>
    //! to obtain best wasted memory to performance compromise.
    //! To do it, define their values before rapidxml.hpp file is included.
    //! \param Ch Character type of created nodes.
    template<class Ch = char>
    class memory_pool
    {

        public:

            //! \cond internal
            typedef void *(alloc_func)(
                std::size_t);       // Type of user-defined function used to allocate memory
            typedef void (free_func)(void *);              // Type of user-defined function used to free memory
            //! \endcond

            //! Constructs empty pool with default allocator functions.
            memory_pool()
                : m_alloc_func(0)
                , m_free_func(0)
            {
                init();
            }

            //! Destroys pool and frees all the memory.
            //! This causes memory occupied by nodes allocated by the pool to be freed.
            //! Nodes allocated from the pool are no longer valid.
            ~memory_pool()
            {
                clear();
            }

            //! Allocates a new node from the pool, and optionally assigns name and value to it.
            //! If the allocation request cannot be accomodated, this function will throw <code>std::bad_alloc</code>.
            //! If exceptions are disabled by defining RAPIDXML_NO_EXCEPTIONS, this function
            //! will call rapidxml::parse_error_handler() function.
            //! \param type Type of node to create.
            //! \param name Name to assign to the node, or 0 to assign no name.
            //! \param value Value to assign to the node, or 0 to assign no value.
            //! \param name_size Size of name to assign, or 0 to automatically calculate size from name string.
            //! \param value_size Size of value to assign, or 0 to automatically calculate size from value string.
            //! \return Pointer to allocated node. This pointer will never be NULL.
            xml_node<Ch> *allocate_node(node_type type,
                                        const Ch *name = 0, const Ch *value = 0,
                                        std::size_t name_size = 0, std::size_t value_size = 0)
            {
                void *memory = allocate_aligned(sizeof(xml_node<Ch>));
                xml_node<Ch> *node = new(memory) xml_node<Ch>(type);
                if (name)
                {
                    if (name_size > 0)
                        node->name(name, name_size);
                    else
                        node->name(name);
                }
                if (value)
                {
                    if (value_size > 0)
                        node->value(value, value_size);
                    else
                        node->value(value);
                }
                return node;
            }

            //! Allocates a new attribute from the pool, and optionally assigns name and value to it.
            //! If the allocation request cannot be accomodated, this function will throw <code>std::bad_alloc</code>.
            //! If exceptions are disabled by defining RAPIDXML_NO_EXCEPTIONS, this function
            //! will call rapidxml::parse_error_handler() function.
            //! \param name Name to assign to the attribute, or 0 to assign no name.
            //! \param value Value to assign to the attribute, or 0 to assign no value.
            //! \param name_size Size of name to assign, or 0 to automatically calculate size from name string.
            //! \param value_size Size of value to assign, or 0 to automatically calculate size from value string.
            //! \return Pointer to allocated attribute. This pointer will never be NULL.
            xml_attribute<Ch> *allocate_attribute(const Ch *name = 0, const Ch *value = 0,
                                                  std::size_t name_size = 0, std::size_t value_size = 0)
            {
                void *memory = allocate_aligned(sizeof(xml_attribute<Ch>));
                xml_attribute<Ch> *attribute = new(memory) xml_attribute<Ch>;
                if (name)
                {
                    if (name_size > 0)
                        attribute->name(name, name_size);
                    else
                        attribute->name(name);
                }
                if (value)
                {
                    if (value_size > 0)
                        attribute->value(value, value_size);
                    else
                        attribute->value(value);
                }
                return attribute;
            }

            //! Allocates a char array of given size from the pool, and optionally copies a given string to it.
            //! If the allocation request cannot be accomodated, this function will throw <code>std::bad_alloc</code>.
            //! If exceptions are disabled by defining RAPIDXML_NO_EXCEPTIONS, this function
            //! will call rapidxml::parse_error_handler() function.
            //! \param source String to initialize the allocated memory with, or 0 to not initialize it.
            //! \param size Number of characters to allocate, or zero to calculate it automatically from source string length; if size is 0, source string must be specified and null terminated.
            //! \return Pointer to allocated char array. This pointer will never be NULL.
            Ch *allocate_string(const Ch *source = 0, std::size_t size = 0)
            {
                assert(source || size);     // Either source or size (or both) must be specified
                if (size == 0)
                    size = internal::measure(source) + 1;
                Ch *result = static_cast<Ch *>(allocate_aligned(size * sizeof(Ch)));
                if (source)
                    for (std::size_t i = 0; i < size; ++i)
                        result[i] = source[i];
                return result;
            }

            //! Clones an xml_node and its hierarchy of child nodes and attributes.
            //! Nodes and attributes are allocated from this memory pool.
            //! Names and values are not cloned, they are shared between the clone and the source.
            //! Result node can be optionally specified as a second parameter,
            //! in which case its contents will be replaced with cloned source node.
            //! This is useful when you want to clone entire document.
            //! \param source Node to clone.
            //! \param result Node to put results in, or 0 to automatically allocate result node
            //! \return Pointer to cloned node. This pointer will never be NULL.
            xml_node<Ch> *clone_node(const xml_node<Ch> *source, xml_node<Ch> *result = 0)
            {
                // Prepare result node
                if (result)
                {
                    result->remove_all_attributes();
                    result->remove_all_nodes();
                    result->type(source->type());
                }
                else
                    result = allocate_node(source->type());

                // Clone name and value
                result->name(source->name(), source->name_size());
                result->value(source->value(), source->value_size());

                // Clone child nodes and attributes
                for (xml_node<Ch> *child = source->first_node(); child; child = child->next_sibling())
                    result->append_node(clone_node(child));
                for (xml_attribute<Ch> *attr = source->first_attribute(); attr; attr = attr->next_attribute())
                    result->append_attribute(allocate_attribute(attr->name(), attr->value(), attr->name_size(),
                                             attr->value_size()));

                return result;
            }

            //! Clears the pool.
            //! This causes memory occupied by nodes allocated by the pool to be freed.
            //! Any nodes or strings allocated from the pool will no longer be valid.
            void clear()
            {
                while (m_begin != m_static_memory)
                {
                    char *previous_begin = reinterpret_cast<header *>(align(m_begin))->previous_begin;
                    if (m_free_func)
                        m_free_func(m_begin);
                    else
                        delete[] m_begin;
                    m_begin = previous_begin;
                }
                init();
            }

            //! Sets or resets the user-defined memory allocation functions for the pool.
            //! This can only be called when no memory is allocated from the pool yet, otherwise results are undefined.
            //! Allocation function must not return invalid pointer on failure. It should either throw,
            //! stop the program, or use <code>longjmp()</code> function to pass control to other place of program.
            //! If it returns invalid pointer, results are undefined.
            //! <br><br>
            //! User defined allocation functions must have the following forms:
            //! <br><code>
            //! <br>void *allocate(std::size_t size);
            //! <br>void free(void *pointer);
            //! </code><br>
            //! \param af Allocation function, or 0 to restore default function
            //! \param ff Free function, or 0 to restore default function
            void set_allocator(alloc_func *af, free_func *ff)
            {
                assert(m_begin == m_static_memory
                       && m_ptr == align(m_begin));    // Verify that no memory is allocated yet
                m_alloc_func = af;
                m_free_func = ff;
            }

        private:

            struct header
            {
                char *previous_begin;
            };

            void init()
            {
                m_begin = m_static_memory;
                m_ptr = align(m_begin);
                m_end = m_static_memory + sizeof(m_static_memory);
            }

            char *align(char *ptr)
            {
                std::size_t alignment = ((RAPIDXML_ALIGNMENT - (std::size_t(ptr) & (RAPIDXML_ALIGNMENT - 1))) &
                                         (RAPIDXML_ALIGNMENT - 1));
                return ptr + alignment;
            }

            char *allocate_raw(std::size_t size)
            {
                // Allocate
                void *memory;
                if (m_alloc_func)   // Allocate memory using either user-specified allocation function or global operator new[]
                {
                    memory = m_alloc_func(size);
                    assert(memory); // Allocator is not allowed to return 0, on failure it must either throw, stop the program or use longjmp
                }
                else
                {
                    memory = new char[size];
#ifdef RAPIDXML_NO_EXCEPTIONS
                    if (!memory)            // If exceptions are disabled, verify memory allocation, because new will not be able to throw bad_alloc
                        RAPIDXML_PARSE_ERROR("out of memory", 0);
#endif
                }
                return static_cast<char *>(memory);
            }

            void *allocate_aligned(std::size_t size)
            {
                // Calculate aligned pointer
                char *result = align(m_ptr);

                // If not enough memory left in current pool, allocate a new pool
                if (result + size > m_end)
                {
                    // Calculate required pool size (may be bigger than RAPIDXML_DYNAMIC_POOL_SIZE)
                    std::size_t pool_size = RAPIDXML_DYNAMIC_POOL_SIZE;
                    if (pool_size < size)
                        pool_size = size;

                    // Allocate
                    std::size_t alloc_size = sizeof(header) + (2 * RAPIDXML_ALIGNMENT - 2) +
                                             pool_size;     // 2 alignments required in worst case: one for header, one for actual allocation
                    char *raw_memory = allocate_raw(alloc_size);

                    // Setup new pool in allocated memory
                    char *pool = align(raw_memory);
                    header *new_header = reinterpret_cast<header *>(pool);
                    new_header->previous_begin = m_begin;
                    m_begin = raw_memory;
                    m_ptr = pool + sizeof(header);
                    m_end = raw_memory + alloc_size;

                    // Calculate aligned pointer again using new pool
                    result = align(m_ptr);
                }

                // Update pool and return aligned pointer
                m_ptr = result + size;
                return result;
            }

            char *m_begin;                                      // Start of raw memory making up current pool
            char *m_ptr;                                        // First free byte in current pool
            char *m_end;                                        // One past last available byte in current pool
            char m_static_memory[RAPIDXML_STATIC_POOL_SIZE];    // Static raw memory
            alloc_func
            *m_alloc_func;                           // Allocator function, or 0 if default is to be used
            free_func *m_free_func;                             // Free function, or 0 if default is to be used
    };

    ///////////////////////////////////////////////////////////////////////////
    // XML base

    //! Base class for xml_node and xml_attribute implementing common functions:
    //! name(), name_size(), value(), value_size() and parent().
    //! \param Ch Character type to use
    template<class Ch = char>
    class xml_base
    {

        public:

            ///////////////////////////////////////////////////////////////////////////
            // Construction & destruction

            // Construct a base with empty name, value and parent
            xml_base()
                : m_name(0)
                , m_value(0)
                , m_parent(0)
            {
            }

            ///////////////////////////////////////////////////////////////////////////
            // Node data access

            //! Gets name of the node.
            //! Interpretation of name depends on type of node.
            //! Note that name will not be zero-terminated if rapidxml::parse_no_string_terminators option was selected during parse.
            //! <br><br>
            //! Use name_size() function to determine length of the name.
            //! \return Name of node, or empty string if node has no name.
            Ch *name() const
            {
                return m_name ? m_name : nullstr();
            }

            //! Gets size of node name, not including terminator character.
            //! This function works correctly irrespective of whether name is or is not zero terminated.
            //! \return Size of node name, in characters.
            std::size_t name_size() const
            {
                return m_name ? m_name_size : 0;
            }

            //! Gets value of node.
            //! Interpretation of value depends on type of node.
            //! Note that value will not be zero-terminated if rapidxml::parse_no_string_terminators option was selected during parse.
            //! <br><br>
            //! Use value_size() function to determine length of the value.
            //! \return Value of node, or empty string if node has no value.
            Ch *value() const
            {
                return m_value ? m_value : nullstr();
            }

            //! Gets size of node value, not including terminator character.
            //! This function works correctly irrespective of whether value is or is not zero terminated.
            //! \return Size of node value, in characters.
            std::size_t value_size() const
            {
                return m_value ? m_value_size : 0;
            }

            ///////////////////////////////////////////////////////////////////////////
            // Node modification

            //! Sets name of node to a non zero-terminated string.
            //! See \ref ownership_of_strings.
            //! <br><br>
            //! Note that node does not own its name or value, it only stores a pointer to it.
            //! It will not delete or otherwise free the pointer on destruction.
            //! It is reponsibility of the user to properly manage lifetime of the string.
            //! The easiest way to achieve it is to use memory_pool of the document to allocate the string -
            //! on destruction of the document the string will be automatically freed.
            //! <br><br>
            //! Size of name must be specified separately, because name does not have to be zero terminated.
            //! Use name(const Ch *) function to have the length automatically calculated (string must be zero terminated).
            //! \param name Name of node to set. Does not have to be zero terminated.
            //! \param size Size of name, in characters. This does not include zero terminator, if one is present.
            void name(const Ch *name, std::size_t size)
            {
                m_name = const_cast<Ch *>(name);
                m_name_size = size;
            }

            //! Sets name of node to a zero-terminated string.
            //! See also \ref ownership_of_strings and xml_node::name(const Ch *, std::size_t).
            //! \param name Name of node to set. Must be zero terminated.
            void name(const Ch *name)
            {
                this->name(name, internal::measure(name));
            }

            //! Sets value of node to a non zero-terminated string.
            //! See \ref ownership_of_strings.
            //! <br><br>
            //! Note that node does not own its name or value, it only stores a pointer to it.
            //! It will not delete or otherwise free the pointer on destruction.
            //! It is reponsibility of the user to properly manage lifetime of the string.
            //! The easiest way to achieve it is to use memory_pool of the document to allocate the string -
            //! on destruction of the document the string will be automatically freed.
            //! <br><br>
            //! Size of value must be specified separately, because it does not have to be zero terminated.
            //! Use value(const Ch *) function to have the length automatically calculated (string must be zero terminated).
            //! <br><br>
            //! If an element has a child node of type node_data, it will take precedence over element value when printing.
            //! If you want to manipulate data of elements using values, use parser flag rapidxml::parse_no_data_nodes to prevent creation of data nodes by the parser.
            //! \param value value of node to set. Does not have to be zero terminated.
            //! \param size Size of value, in characters. This does not include zero terminator, if one is present.
            void value(const Ch *value, std::size_t size)
            {
                m_value = const_cast<Ch *>(value);
                m_value_size = size;
            }

            //! Sets value of node to a zero-terminated string.
            //! See also \ref ownership_of_strings and xml_node::value(const Ch *, std::size_t).
            //! \param value Vame of node to set. Must be zero terminated.
            void value(const Ch *value)
            {
                this->value(value, internal::measure(value));
            }

            ///////////////////////////////////////////////////////////////////////////
            // Related nodes access

            //! Gets node parent.
            //! \return Pointer to parent node, or 0 if there is no parent.
            xml_node<Ch> *parent() const
            {
                return m_parent;
            }

        protected:

            // Return empty string
            static Ch *nullstr()
            {
                static Ch zero = Ch('\0');
                return &zero;
            }

            Ch *m_name;                         // Name of node, or 0 if no name
            Ch *m_value;                        // Value of node, or 0 if no value
            std::size_t m_name_size;            // Length of node name, or undefined of no name
            std::size_t m_value_size;           // Length of node value, or undefined if no value
            xml_node<Ch> *m_parent;             // Pointer to parent node, or 0 if none

    };

    //! Class representing attribute node of XML document.
    //! Each attribute has name and value strings, which are available through name() and value() functions (inherited from xml_base).
    //! Note that after parse, both name and value of attribute will point to interior of source text used for parsing.
    //! Thus, this text must persist in memory for the lifetime of attribute.
    //! \param Ch Character type to use.
    template<class Ch = char>
    class xml_attribute: public xml_base<Ch>
    {

            friend class xml_node<Ch>;

        public:

            ///////////////////////////////////////////////////////////////////////////
            // Construction & destruction

            //! Constructs an empty attribute with the specified type.
            //! Consider using memory_pool of appropriate xml_document if allocating attributes manually.
            xml_attribute()
            {
            }

            ///////////////////////////////////////////////////////////////////////////
            // Related nodes access

            //! Gets document of which attribute is a child.
            //! \return Pointer to document that contains this attribute, or 0 if there is no parent document.
            xml_document<Ch> *document() const
            {
                if (xml_node<Ch> *node = this->parent())
                {
                    while (node->parent())
                        node = node->parent();
                    return node->type() == node_document ? static_cast<xml_document<Ch> *>(node) : 0;
                }
                else
                    return 0;
            }

            //! Gets previous attribute, optionally matching attribute name.
            //! \param name Name of attribute to find, or 0 to return previous attribute regardless of its name; this string doesn't have to be zero-terminated if name_size is non-zero
            //! \param name_size Size of name, in characters, or 0 to have size calculated automatically from string
            //! \param case_sensitive Should name comparison be case-sensitive; non case-sensitive comparison works properly only for ASCII characters
            //! \return Pointer to found attribute, or 0 if not found.
            xml_attribute<Ch> *previous_attribute(const Ch *name = 0, std::size_t name_size = 0,
                                                  bool case_sensitive = true) const
            {
                if (name)
                {
                    if (name_size == 0)
                        name_size = internal::measure(name);
                    for (xml_attribute<Ch> *attribute = m_prev_attribute; attribute;
                         attribute = attribute->m_prev_attribute)
                        if (internal::compare(attribute->name(), attribute->name_size(), name, name_size, case_sensitive))
                            return attribute;
                    return 0;
                }
                else
                    return this->m_parent ? m_prev_attribute : 0;
            }

            //! Gets next attribute, optionally matching attribute name.
            //! \param name Name of attribute to find, or 0 to return next attribute regardless of its name; this string doesn't have to be zero-terminated if name_size is non-zero
            //! \param name_size Size of name, in characters, or 0 to have size calculated automatically from string
            //! \param case_sensitive Should name comparison be case-sensitive; non case-sensitive comparison works properly only for ASCII characters
            //! \return Pointer to found attribute, or 0 if not found.
            xml_attribute<Ch> *next_attribute(const Ch *name = 0, std::size_t name_size = 0,
                                              bool case_sensitive = true) const
            {
                if (name)
                {
                    if (name_size == 0)
                        name_size = internal::measure(name);
                    for (xml_attribute<Ch> *attribute = m_next_attribute; attribute;
                         attribute = attribute->m_next_attribute)
                        if (internal::compare(attribute->name(), attribute->name_size(), name, name_size, case_sensitive))
                            return attribute;
                    return 0;
                }
                else
                    return this->m_parent ? m_next_attribute : 0;
            }

        private:

            xml_attribute<Ch>
            *m_prev_attribute;        // Pointer to previous sibling of attribute, or 0 if none; only valid if parent is non-zero
            xml_attribute<Ch>
            *m_next_attribute;        // Pointer to next sibling of attribute, or 0 if none; only valid if parent is non-zero

    };

    ///////////////////////////////////////////////////////////////////////////
    // XML node

    //! Class representing a node of XML document.
    //! Each node may have associated name and value strings, which are available through name() and value() functions.
    //! Interpretation of name and value depends on type of the node.
    //! Type of node can be determined by using type() function.
    //! <br><br>
    //! Note that after parse, both name and value of node, if any, will point interior of source text used for parsing.
    //! Thus, this text must persist in the memory for the lifetime of node.
    //! \param Ch Character type to use.
    template<class Ch = char>
    class xml_node: public xml_base<Ch>
    {

        public:

            ///////////////////////////////////////////////////////////////////////////
            // Construction & destruction

            //! Constructs an empty node with the specified type.
            //! Consider using memory_pool of appropriate document to allocate nodes manually.
            //! \param type Type of node to construct.
            xml_node(node_type type)
                : m_type(type)
                , m_first_node(0)
                , m_first_attribute(0)
            {
            }

            ///////////////////////////////////////////////////////////////////////////
            // Node data access

            //! Gets type of node.
            //! \return Type of node.
            node_type type() const
            {
                return m_type;
            }

            ///////////////////////////////////////////////////////////////////////////
            // Related nodes access

            //! Gets document of which node is a child.
            //! \return Pointer to document that contains this node, or 0 if there is no parent document.
            xml_document<Ch> *document() const
            {
                xml_node<Ch> *node = const_cast<xml_node<Ch> *>(this);
                while (node->parent())
                    node = node->parent();
                return node->type() == node_document ? static_cast<xml_document<Ch> *>(node) : 0;
            }

            //! Gets first child node, optionally matching node name.
            //! \param name Name of child to find, or 0 to return first child regardless of its name; this string doesn't have to be zero-terminated if name_size is non-zero
            //! \param name_size Size of name, in characters, or 0 to have size calculated automatically from string
            //! \param case_sensitive Should name comparison be case-sensitive; non case-sensitive comparison works properly only for ASCII characters
            //! \return Pointer to found child, or 0 if not found.
            xml_node<Ch> *first_node(const Ch *name = 0, std::size_t name_size = 0,
                                     bool case_sensitive = true) const
            {
                if (name)
                {
                    if (name_size == 0)
                        name_size = internal::measure(name);
                    for (xml_node<Ch> *child = m_first_node; child; child = child->next_sibling())
                        if (internal::compare(child->name(), child->name_size(), name, name_size, case_sensitive))
                            return child;
                    return 0;
                }
                else
                    return m_first_node;
            }

            //! Gets last child node, optionally matching node name.
            //! Behaviour is undefined if node has no children.
            //! Use first_node() to test if node has children.
            //! \param name Name of child to find, or 0 to return last child regardless of its name; this string doesn't have to be zero-terminated if name_size is non-zero
            //! \param name_size Size of name, in characters, or 0 to have size calculated automatically from string
            //! \param case_sensitive Should name comparison be case-sensitive; non case-sensitive comparison works properly only for ASCII characters
            //! \return Pointer to found child, or 0 if not found.
            xml_node<Ch> *last_node(const Ch *name = 0, std::size_t name_size = 0,
                                    bool case_sensitive = true) const
            {
                assert(m_first_node);  // Cannot query for last child if node has no children
                if (name)
                {
                    if (name_size == 0)
                        name_size = internal::measure(name);
                    for (xml_node<Ch> *child = m_last_node; child; child = child->previous_sibling())
                        if (internal::compare(child->name(), child->name_size(), name, name_size, case_sensitive))
                            return child;
                    return 0;
                }
                else
                    return m_last_node;
            }

            //! Gets previous sibling node, optionally matching node name.
            //! Behaviour is undefined if node has no parent.
            //! Use parent() to test if node has a parent.
            //! \param name Name of sibling to find, or 0 to return previous sibling regardless of its name; this string doesn't have to be zero-terminated if name_size is non-zero
            //! \param name_size Size of name, in characters, or 0 to have size calculated automatically from string
            //! \param case_sensitive Should name comparison be case-sensitive; non case-sensitive comparison works properly only for ASCII characters
            //! \return Pointer to found sibling, or 0 if not found.
            xml_node<Ch> *previous_sibling(const Ch *name = 0, std::size_t name_size = 0,
                                           bool case_sensitive = true) const
            {
                assert(this->m_parent);     // Cannot query for siblings if node has no parent
                if (name)
                {
                    if (name_size == 0)
                        name_size = internal::measure(name);
                    for (xml_node<Ch> *sibling = m_prev_sibling; sibling; sibling = sibling->m_prev_sibling)
                        if (internal::compare(sibling->name(), sibling->name_size(), name, name_size, case_sensitive))
                            return sibling;
                    return 0;
                }
                else
                    return m_prev_sibling;
            }

            //! Gets next sibling node, optionally matching node name.
            //! Behaviour is undefined if node has no parent.
            //! Use parent() to test if node has a parent.
            //! \param name Name of sibling to find, or 0 to return next sibling regardless of its name; this string doesn't have to be zero-terminated if name_size is non-zero
            //! \param name_size Size of name, in characters, or 0 to have size calculated automatically from string
            //! \param case_sensitive Should name comparison be case-sensitive; non case-sensitive comparison works properly only for ASCII characters
            //! \return Pointer to found sibling, or 0 if not found.
            xml_node<Ch> *next_sibling(const Ch *name = 0, std::size_t name_size = 0,
                                       bool case_sensitive = true) const
            {
                assert(this->m_parent);     // Cannot query for siblings if node has no parent
                if (name)
                {
                    if (name_size == 0)
                        name_size = internal::measure(name);
                    for (xml_node<Ch> *sibling = m_next_sibling; sibling; sibling = sibling->m_next_sibling)
                        if (internal::compare(sibling->name(), sibling->name_size(), name, name_size, case_sensitive))
                            return sibling;
                    return 0;
                }
                else
                    return m_next_sibling;
            }

            //! Gets first attribute of node, optionally matching attribute name.
            //! \param name Name of attribute to find, or 0 to return first attribute regardless of its name; this string doesn't have to be zero-terminated if name_size is non-zero
            //! \param name_size Size of name, in characters, or 0 to have size calculated automatically from string
            //! \param case_sensitive Should name comparison be case-sensitive; non case-sensitive comparison works properly only for ASCII characters
            //! \return Pointer to found attribute, or 0 if not found.
            xml_attribute<Ch> *first_attribute(const Ch *name = 0, std::size_t name_size = 0,
                                               bool case_sensitive = true) const
            {
                if (name)
                {
                    if (name_size == 0)
                        name_size = internal::measure(name);
                    for (xml_attribute<Ch> *attribute = m_first_attribute; attribute;
                         attribute = attribute->m_next_attribute)
                        if (internal::compare(attribute->name(), attribute->name_size(), name, name_size, case_sensitive))
                            return attribute;
                    return 0;
                }
                else
                    return m_first_attribute;
            }

            //! Gets last attribute of node, optionally matching attribute name.
            //! \param name Name of attribute to find, or 0 to return last attribute regardless of its name; this string doesn't have to be zero-terminated if name_size is non-zero
            //! \param name_size Size of name, in characters, or 0 to have size calculated automatically from string
            //! \param case_sensitive Should name comparison be case-sensitive; non case-sensitive comparison works properly only for ASCII characters
            //! \return Pointer to found attribute, or 0 if not found.
            xml_attribute<Ch> *last_attribute(const Ch *name = 0, std::size_t name_size = 0,
                                              bool case_sensitive = true) const
            {
                if (name)
                {
                    if (name_size == 0)
                        name_size = internal::measure(name);
                    for (xml_attribute<Ch> *attribute = m_last_attribute; attribute;
                         attribute = attribute->m_prev_attribute)
                        if (internal::compare(attribute->name(), attribute->name_size(), name, name_size, case_sensitive))
                            return attribute;
                    return 0;
                }
                else
                    return m_first_attribute ? m_last_attribute : 0;
            }

            ///////////////////////////////////////////////////////////////////////////
            // Node modification

            //! Sets type of node.
            //! \param type Type of node to set.
            void type(node_type type)
            {
                m_type = type;
            }

            ///////////////////////////////////////////////////////////////////////////
            // Node manipulation

            //! Prepends a new child node.
            //! The prepended child becomes the first child, and all existing children are moved one position back.
            //! \param child Node to prepend.
            void prepend_node(xml_node<Ch> *child)
            {
                assert(child && !child->parent() && child->type() != node_document);
                if (first_node())
                {
                    child->m_next_sibling = m_first_node;
                    m_first_node->m_prev_sibling = child;
                }
                else
                {
                    child->m_next_sibling = 0;
                    m_last_node = child;
                }
                m_first_node = child;
                child->m_parent = this;
                child->m_prev_sibling = 0;
            }

            //! Appends a new child node.
            //! The appended child becomes the last child.
            //! \param child Node to append.
            void append_node(xml_node<Ch> *child)
            {
                assert(child && !child->parent() && child->type() != node_document);
                if (first_node())
                {
                    child->m_prev_sibling = m_last_node;
                    m_last_node->m_next_sibling = child;
                }
                else
                {
                    child->m_prev_sibling = 0;
                    m_first_node = child;
                }
                m_last_node = child;
                child->m_parent = this;
                child->m_next_sibling = 0;
            }

            //! Inserts a new child node at specified place inside the node.
            //! All children after and including the specified node are moved one position back.
            //! \param where Place where to insert the child, or 0 to insert at the back.
            //! \param child Node to insert.
            void insert_node(xml_node<Ch> *where, xml_node<Ch> *child)
            {
                assert(!where || where->parent() == this);
                assert(child && !child->parent() && child->type() != node_document);
                if (where == m_first_node)
                    prepend_node(child);
                else if (where == 0)
                    append_node(child);
                else
                {
                    child->m_prev_sibling = where->m_prev_sibling;
                    child->m_next_sibling = where;
                    where->m_prev_sibling->m_next_sibling = child;
                    where->m_prev_sibling = child;
                    child->m_parent = this;
                }
            }

            //! Removes first child node.
            //! If node has no children, behaviour is undefined.
            //! Use first_node() to test if node has children.
            void remove_first_node()
            {
                assert(first_node());
                xml_node<Ch> *child = m_first_node;
                m_first_node = child->m_next_sibling;
                if (child->m_next_sibling)
                    child->m_next_sibling->m_prev_sibling = 0;
                else
                    m_last_node = 0;
                child->m_parent = 0;
            }

            //! Removes last child of the node.
            //! If node has no children, behaviour is undefined.
            //! Use first_node() to test if node has children.
            void remove_last_node()
            {
                assert(first_node());
                xml_node<Ch> *child = m_last_node;
                if (child->m_prev_sibling)
                {
                    m_last_node = child->m_prev_sibling;
                    child->m_prev_sibling->m_next_sibling = 0;
                }
                else
                    m_first_node = 0;
                child->m_parent = 0;
            }

            //! Removes specified child from the node
            // \param where Pointer to child to be removed.
            void remove_node(xml_node<Ch> *where)
            {
                assert(where && where->parent() == this);
                assert(first_node());
                if (where == m_first_node)
                    remove_first_node();
                else if (where == m_last_node)
                    remove_last_node();
                else
                {
                    where->m_prev_sibling->m_next_sibling = where->m_next_sibling;
                    where->m_next_sibling->m_prev_sibling = where->m_prev_sibling;
                    where->m_parent = 0;
                }
            }

            //! Removes all child nodes (but not attributes).
            void remove_all_nodes()
            {
                for (xml_node<Ch> *node = first_node(); node; node = node->m_next_sibling)
                    node->m_parent = 0;
                m_first_node = 0;
            }

            //! Prepends a new attribute to the node.
            //! \param attribute Attribute to prepend.
            void prepend_attribute(xml_attribute<Ch> *attribute)
            {
                assert(attribute && !attribute->parent());
                if (first_attribute())
                {
                    attribute->m_next_attribute = m_first_attribute;
                    m_first_attribute->m_prev_attribute = attribute;
                }
                else
                {
                    attribute->m_next_attribute = 0;
                    m_last_attribute = attribute;
                }
                m_first_attribute = attribute;
                attribute->m_parent = this;
                attribute->m_prev_attribute = 0;
            }

            //! Appends a new attribute to the node.
            //! \param attribute Attribute to append.
            void append_attribute(xml_attribute<Ch> *attribute)
            {
                assert(attribute && !attribute->parent());
                if (first_attribute())
                {
                    attribute->m_prev_attribute = m_last_attribute;
                    m_last_attribute->m_next_attribute = attribute;
                }
                else
                {
                    attribute->m_prev_attribute = 0;
                    m_first_attribute = attribute;
                }
                m_last_attribute = attribute;
                attribute->m_parent = this;
                attribute->m_next_attribute = 0;
            }

            //! Inserts a new attribute at specified place inside the node.
            //! All attributes after and including the specified attribute are moved one position back.
            //! \param where Place where to insert the attribute, or 0 to insert at the back.
            //! \param attribute Attribute to insert.
            void insert_attribute(xml_attribute<Ch> *where, xml_attribute<Ch> *attribute)
            {
                assert(!where || where->parent() == this);
                assert(attribute && !attribute->parent());
                if (where == m_first_attribute)
                    prepend_attribute(attribute);
                else if (where == 0)
                    append_attribute(attribute);
                else
                {
                    attribute->m_prev_attribute = where->m_prev_attribute;
                    attribute->m_next_attribute = where;
                    where->m_prev_attribute->m_next_attribute = attribute;
                    where->m_prev_attribute = attribute;
                    attribute->m_parent = this;
                }
            }

            //! Removes first attribute of the node.
            //! If node has no attributes, behaviour is undefined.
            //! Use first_attribute() to test if node has attributes.
            void remove_first_attribute()
            {
                assert(first_attribute());
                xml_attribute<Ch> *attribute = m_first_attribute;
                if (attribute->m_next_attribute)
                {
                    attribute->m_next_attribute->m_prev_attribute = 0;
                }
                else
                    m_last_attribute = 0;
                attribute->m_parent = 0;
                m_first_attribute = attribute->m_next_attribute;
            }

            //! Removes last attribute of the node.
            //! If node has no attributes, behaviour is undefined.
            //! Use first_attribute() to test if node has attributes.
            void remove_last_attribute()
            {
                assert(first_attribute());
                xml_attribute<Ch> *attribute = m_last_attribute;
                if (attribute->m_prev_attribute)
                {
                    attribute->m_prev_attribute->m_next_attribute = 0;
                    m_last_attribute = attribute->m_prev_attribute;
                }
                else
                    m_first_attribute = 0;
                attribute->m_parent = 0;
            }

            //! Removes specified attribute from node.
            //! \param where Pointer to attribute to be removed.
            void remove_attribute(xml_attribute<Ch> *where)
            {
                assert(first_attribute() && where->parent() == this);
                if (where == m_first_attribute)
                    remove_first_attribute();
                else if (where == m_last_attribute)
                    remove_last_attribute();
                else
                {
                    where->m_prev_attribute->m_next_attribute = where->m_next_attribute;
                    where->m_next_attribute->m_prev_attribute = where->m_prev_attribute;
                    where->m_parent = 0;
                }
            }

            //! Removes all attributes of node.
            void remove_all_attributes()
            {
                for (xml_attribute<Ch> *attribute = first_attribute(); attribute;
                     attribute = attribute->m_next_attribute)
                    attribute->m_parent = 0;
                m_first_attribute = 0;
            }

        private:

            ///////////////////////////////////////////////////////////////////////////
            // Restrictions

            // No copying
            xml_node(const xml_node &);
            void operator =(const xml_node &);

            ///////////////////////////////////////////////////////////////////////////
            // Data members

            // Note that some of the pointers below have UNDEFINED values if certain other pointers are 0.
            // This is required for maximum performance, as it allows the parser to omit initialization of
            // unneded/redundant values.
            //
            // The rules are as follows:
            // 1. first_node and first_attribute contain valid pointers, or 0 if node has no children/attributes respectively
            // 2. last_node and last_attribute are valid only if node has at least one child/attribute respectively, otherwise they contain garbage
            // 3. prev_sibling and next_sibling are valid only if node has a parent, otherwise they contain garbage

            node_type m_type;                       // Type of node; always valid
            xml_node<Ch> *m_first_node;             // Pointer to first child node, or 0 if none; always valid
            xml_node<Ch>
            *m_last_node;              // Pointer to last child node, or 0 if none; this value is only valid if m_first_node is non-zero
            xml_attribute<Ch>
            *m_first_attribute;   // Pointer to first attribute of node, or 0 if none; always valid
            xml_attribute<Ch>
            *m_last_attribute;    // Pointer to last attribute of node, or 0 if none; this value is only valid if m_first_attribute is non-zero
            xml_node<Ch>
            *m_prev_sibling;           // Pointer to previous sibling of node, or 0 if none; this value is only valid if m_parent is non-zero
            xml_node<Ch>
            *m_next_sibling;           // Pointer to next sibling of node, or 0 if none; this value is only valid if m_parent is non-zero

    };

    ///////////////////////////////////////////////////////////////////////////
    // XML document

    //! This class represents root of the DOM hierarchy.
    //! It is also an xml_node and a memory_pool through public inheritance.
    //! Use parse() function to build a DOM tree from a zero-terminated XML text string.
    //! parse() function allocates memory for nodes and attributes by using functions of xml_document,
    //! which are inherited from memory_pool.
    //! To access root node of the document, use the document itself, as if it was an xml_node.
    //! \param Ch Character type to use.
    template<class Ch = char>
    class xml_document: public xml_node<Ch>, public memory_pool<Ch>
    {

        public:

            //! Constructs empty XML document
            xml_document()
                : xml_node<Ch>(node_document)
            {
            }

            //! Parses zero-terminated XML string according to given flags.
            //! Passed string will be modified by the parser, unless rapidxml::parse_non_destructive flag is used.
            //! The string must persist for the lifetime of the document.
            //! In case of error, rapidxml::parse_error exception will be thrown.
            //! <br><br>
            //! If you want to parse contents of a file, you must first load the file into the memory, and pass pointer to its beginning.
            //! Make sure that data is zero-terminated.
            //! <br><br>
            //! Document can be parsed into multiple times.
            //! Each new call to parse removes previous nodes and attributes (if any), but does not clear memory pool.
            //! \param text XML data to parse; pointer is non-const to denote fact that this data may be modified by the parser.
            template<int Flags>
            void parse(Ch *text)
            {
                assert(text);

                // Remove current contents
                this->remove_all_nodes();
                this->remove_all_attributes();

                // Parse BOM, if any
                parse_bom<Flags>(text);

                // Parse children
                while (1)
                {
                    // Skip whitespace before node
                    skip<whitespace_pred, Flags>(text);
                    if (*text == 0)
                        break;

                    // Parse and append new child
                    if (*text == Ch('<'))
                    {
                        ++text;     // Skip '<'
                        if (xml_node<Ch> *node = parse_node<Flags>(text))
                            this->append_node(node);
                    }
                    else
                        RAPIDXML_PARSE_ERROR("expected <", text);
                }

            }

            //! Clears the document by deleting all nodes and clearing the memory pool.
            //! All nodes owned by document pool are destroyed.
            void clear()
            {
                this->remove_all_nodes();
                this->remove_all_attributes();
                memory_pool<Ch>::clear();
            }

        private:

            ///////////////////////////////////////////////////////////////////////
            // Internal character utility functions

            // Detect whitespace character
            struct whitespace_pred
            {
                static unsigned char test(Ch ch)
                {
                    return internal::lookup_tables<0>::lookup_whitespace[static_cast<unsigned char>(ch)];
                }
            };

            // Detect node name character
            struct node_name_pred
            {
                static unsigned char test(Ch ch)
                {
                    return internal::lookup_tables<0>::lookup_node_name[static_cast<unsigned char>(ch)];
                }
            };

            // Detect attribute name character
            struct attribute_name_pred
            {
                static unsigned char test(Ch ch)
                {
                    return internal::lookup_tables<0>::lookup_attribute_name[static_cast<unsigned char>(ch)];
                }
            };

            // Detect text character (PCDATA)
            struct text_pred
            {
                static unsigned char test(Ch ch)
                {
                    return internal::lookup_tables<0>::lookup_text[static_cast<unsigned char>(ch)];
                }
            };

            // Detect text character (PCDATA) that does not require processing
            struct text_pure_no_ws_pred
            {
                static unsigned char test(Ch ch)
                {
                    return internal::lookup_tables<0>::lookup_text_pure_no_ws[static_cast<unsigned char>(ch)];
                }
            };

            // Detect text character (PCDATA) that does not require processing
            struct text_pure_with_ws_pred
            {
                static unsigned char test(Ch ch)
                {
                    return internal::lookup_tables<0>::lookup_text_pure_with_ws[static_cast<unsigned char>(ch)];
                }
            };

            // Detect attribute value character
            template<Ch Quote>
            struct attribute_value_pred
            {
                static unsigned char test(Ch ch)
                {
                    if (Quote == Ch('\''))
                        return internal::lookup_tables<0>::lookup_attribute_data_1[static_cast<unsigned char>(ch)];
                    if (Quote == Ch('\"'))
                        return internal::lookup_tables<0>::lookup_attribute_data_2[static_cast<unsigned char>(ch)];
                    return 0;       // Should never be executed, to avoid warnings on Comeau
                }
            };

            // Detect attribute value character
            template<Ch Quote>
            struct attribute_value_pure_pred
            {
                static unsigned char test(Ch ch)
                {
                    if (Quote == Ch('\''))
                        return internal::lookup_tables<0>::lookup_attribute_data_1_pure[static_cast<unsigned char>(ch)];
                    if (Quote == Ch('\"'))
                        return internal::lookup_tables<0>::lookup_attribute_data_2_pure[static_cast<unsigned char>(ch)];
                    return 0;       // Should never be executed, to avoid warnings on Comeau
                }
            };

            // Insert coded character, using UTF8 or 8-bit ASCII
            template<int Flags>
            static void insert_coded_character(Ch *&text, unsigned long code)
            {
                if (Flags & parse_no_utf8)
                {
                    // Insert 8-bit ASCII character
                    // Todo: possibly verify that code is less than 256 and use replacement char otherwise?
                    text[0] = static_cast<unsigned char>(code);
                    text += 1;
                }
                else
                {
                    // Insert UTF8 sequence
                    if (code < 0x80)    // 1 byte sequence
                    {
                        text[0] = static_cast<unsigned char>(code);
                        text += 1;
                    }
                    else if (code < 0x800)  // 2 byte sequence
                    {
                        text[1] = static_cast<unsigned char>((code | 0x80) & 0xBF); code >>= 6;
                        text[0] = static_cast<unsigned char>(code | 0xC0);
                        text += 2;
                    }
                    else if (code < 0x10000)    // 3 byte sequence
                    {
                        text[2] = static_cast<unsigned char>((code | 0x80) & 0xBF); code >>= 6;
                        text[1] = static_cast<unsigned char>((code | 0x80) & 0xBF); code >>= 6;
                        text[0] = static_cast<unsigned char>(code | 0xE0);
                        text += 3;
                    }
                    else if (code < 0x110000)   // 4 byte sequence
                    {
                        text[3] = static_cast<unsigned char>((code | 0x80) & 0xBF); code >>= 6;
                        text[2] = static_cast<unsigned char>((code | 0x80) & 0xBF); code >>= 6;
                        text[1] = static_cast<unsigned char>((code | 0x80) & 0xBF); code >>= 6;
                        text[0] = static_cast<unsigned char>(code | 0xF0);
                        text += 4;
                    }
                    else    // Invalid, only codes up to 0x10FFFF are allowed in Unicode
                    {
                        RAPIDXML_PARSE_ERROR("invalid numeric character entity", text);
                    }
                }
            }

            // Skip characters until predicate evaluates to true
            template<class StopPred, int Flags>
            static void skip(Ch *&text)
            {
                Ch *tmp = text;
                while (StopPred::test(*tmp))
                    ++tmp;
                text = tmp;
            }

            // Skip characters until predicate evaluates to true while doing the following:
            // - replacing XML character entity references with proper characters (&apos; &amp; &quot; &lt; &gt; &#...;)
            // - condensing whitespace sequences to single space character
            template<class StopPred, class StopPredPure, int Flags>
            static Ch *skip_and_expand_character_refs(Ch *&text)
            {
                // If entity translation, whitespace condense and whitespace trimming is disabled, use plain skip
                if (Flags & parse_no_entity_translation &&
                    !(Flags & parse_normalize_whitespace) &&
                    !(Flags & parse_trim_whitespace))
                {
                    skip<StopPred, Flags>(text);
                    return text;
                }

                // Use simple skip until first modification is detected
                skip<StopPredPure, Flags>(text);

                // Use translation skip
                Ch *src = text;
                Ch *dest = src;
                while (StopPred::test(*src))
                {
                    // If entity translation is enabled
                    if (!(Flags & parse_no_entity_translation))
                    {
                        // Test if replacement is needed
                        if (src[0] == Ch('&'))
                        {
                            switch (src[1])
                            {

                                // &amp; &apos;
                                case Ch('a'):
                                    if (src[2] == Ch('m') && src[3] == Ch('p') && src[4] == Ch(';'))
                                    {
                                        *dest = Ch('&');
                                        ++dest;
                                        src += 5;
                                        continue;
                                    }
                                    if (src[2] == Ch('p') && src[3] == Ch('o') && src[4] == Ch('s') && src[5] == Ch(';'))
                                    {
                                        *dest = Ch('\'');
                                        ++dest;
                                        src += 6;
                                        continue;
                                    }
                                    break;

                                // &quot;
                                case Ch('q'):
                                    if (src[2] == Ch('u') && src[3] == Ch('o') && src[4] == Ch('t') && src[5] == Ch(';'))
                                    {
                                        *dest = Ch('"');
                                        ++dest;
                                        src += 6;
                                        continue;
                                    }
                                    break;

                                // &gt;
                                case Ch('g'):
                                    if (src[2] == Ch('t') && src[3] == Ch(';'))
                                    {
                                        *dest = Ch('>');
                                        ++dest;
                                        src += 4;
                                        continue;
                                    }
                                    break;

                                // &lt;
                                case Ch('l'):
                                    if (src[2] == Ch('t') && src[3] == Ch(';'))
                                    {
                                        *dest = Ch('<');
                                        ++dest;
                                        src += 4;
                                        continue;
                                    }
                                    break;

                                // &#...; - assumes ASCII
                                case Ch('#'):
                                    if (src[2] == Ch('x'))
                                    {
                                        unsigned long code = 0;
                                        src += 3;   // Skip &#x
                                        while (1)
                                        {
                                            unsigned char digit = internal::lookup_tables<0>::lookup_digits[static_cast<unsigned char>(*src)];
                                            if (digit == 0xFF)
                                                break;
                                            code = code * 16 + digit;
                                            ++src;
                                        }
                                        insert_coded_character<Flags>(dest, code);    // Put character in output
                                    }
                                    else
                                    {
                                        unsigned long code = 0;
                                        src += 2;   // Skip &#
                                        while (1)
                                        {
                                            unsigned char digit = internal::lookup_tables<0>::lookup_digits[static_cast<unsigned char>(*src)];
                                            if (digit == 0xFF)
                                                break;
                                            code = code * 10 + digit;
                                            ++src;
                                        }
                                        insert_coded_character<Flags>(dest, code);    // Put character in output
                                    }
                                    if (*src == Ch(';'))
                                        ++src;
                                    else
                                        RAPIDXML_PARSE_ERROR("expected ;", src);
                                    continue;

                                // Something else
                                default:
                                    // Ignore, just copy '&' verbatim
                                    break;

                            }
                        }
                    }

                    // If whitespace condensing is enabled
                    if (Flags & parse_normalize_whitespace)
                    {
                        // Test if condensing is needed
                        if (whitespace_pred::test(*src))
                        {
                            *dest = Ch(' '); ++dest;    // Put single space in dest
                            ++src;                      // Skip first whitespace char
                            // Skip remaining whitespace chars
                            while (whitespace_pred::test(*src))
                                ++src;
                            continue;
                        }
                    }

                    // No replacement, only copy character
                    *dest++ = *src++;

                }

                // Return new end
                text = src;
                return dest;

            }

            ///////////////////////////////////////////////////////////////////////
            // Internal parsing functions

            // Parse BOM, if any
            template<int Flags>
            void parse_bom(Ch *&text)
            {
                // UTF-8?
                if (static_cast<unsigned char>(text[0]) == 0xEF &&
                    static_cast<unsigned char>(text[1]) == 0xBB &&
                    static_cast<unsigned char>(text[2]) == 0xBF)
                {
                    text += 3;      // Skup utf-8 bom
                }
            }

            // Parse XML declaration (<?xml...)
            template<int Flags>
            xml_node<Ch> *parse_xml_declaration(Ch *&text)
            {
                // If parsing of declaration is disabled
                if (!(Flags & parse_declaration_node))
                {
                    // Skip until end of declaration
                    while (text[0] != Ch('?') || text[1] != Ch('>'))
                    {
                        if (!text[0])
                            RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                        ++text;
                    }
                    text += 2;    // Skip '?>'
                    return 0;
                }

                // Create declaration
                xml_node<Ch> *declaration = this->allocate_node(node_declaration);

                // Skip whitespace before attributes or ?>
                skip<whitespace_pred, Flags>(text);

                // Parse declaration attributes
                parse_node_attributes<Flags>(text, declaration);

                // Skip ?>
                if (text[0] != Ch('?') || text[1] != Ch('>'))
                    RAPIDXML_PARSE_ERROR("expected ?>", text);
                text += 2;

                return declaration;
            }

            // Parse XML comment (<!--...)
            template<int Flags>
            xml_node<Ch> *parse_comment(Ch *&text)
            {
                // If parsing of comments is disabled
                if (!(Flags & parse_comment_nodes))
                {
                    // Skip until end of comment
                    while (text[0] != Ch('-') || text[1] != Ch('-') || text[2] != Ch('>'))
                    {
                        if (!text[0])
                            RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                        ++text;
                    }
                    text += 3;     // Skip '-->'
                    return 0;      // Do not produce comment node
                }

                // Remember value start
                Ch *value = text;

                // Skip until end of comment
                while (text[0] != Ch('-') || text[1] != Ch('-') || text[2] != Ch('>'))
                {
                    if (!text[0])
                        RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                    ++text;
                }

                // Create comment node
                xml_node<Ch> *comment = this->allocate_node(node_comment);
                comment->value(value, text - value);

                // Place zero terminator after comment value
                if (!(Flags & parse_no_string_terminators))
                    *text = Ch('\0');

                text += 3;     // Skip '-->'
                return comment;
            }

            // Parse DOCTYPE
            template<int Flags>
            xml_node<Ch> *parse_doctype(Ch *&text)
            {
                // Remember value start
                Ch *value = text;

                // Skip to >
                while (*text != Ch('>'))
                {
                    // Determine character type
                    switch (*text)
                    {

                        // If '[' encountered, scan for matching ending ']' using naive algorithm with depth
                        // This works for all W3C test files except for 2 most wicked
                        case Ch('['):
                            {
                                ++text;     // Skip '['
                                int depth = 1;
                                while (depth > 0)
                                {
                                    switch (*text)
                                    {
                                        case Ch('['): ++depth; break;
                                        case Ch(']'): --depth; break;
                                        case 0: RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                                        default: break;
                                    }
                                    ++text;
                                }
                                break;
                            }

                        // Error on end of text
                        case Ch('\0'):
                            RAPIDXML_PARSE_ERROR("unexpected end of data", text);

                        // Other character, skip it
                        default:
                            ++text;

                    }
                }

                // If DOCTYPE nodes enabled
                if (Flags & parse_doctype_node)
                {
                    // Create a new doctype node
                    xml_node<Ch> *doctype = this->allocate_node(node_doctype);
                    doctype->value(value, text - value);

                    // Place zero terminator after value
                    if (!(Flags & parse_no_string_terminators))
                        *text = Ch('\0');

                    text += 1;      // skip '>'
                    return doctype;
                }
                else
                {
                    text += 1;      // skip '>'
                    return 0;
                }

            }

            // Parse PI
            template<int Flags>
            xml_node<Ch> *parse_pi(Ch *&text)
            {
                // If creation of PI nodes is enabled
                if (Flags & parse_pi_nodes)
                {
                    // Create pi node
                    xml_node<Ch> *pi = this->allocate_node(node_pi);

                    // Extract PI target name
                    Ch *name = text;
                    skip<node_name_pred, Flags>(text);
                    if (text == name)
                        RAPIDXML_PARSE_ERROR("expected PI target", text);
                    pi->name(name, text - name);

                    // Skip whitespace between pi target and pi
                    skip<whitespace_pred, Flags>(text);

                    // Remember start of pi
                    Ch *value = text;

                    // Skip to '?>'
                    while (text[0] != Ch('?') || text[1] != Ch('>'))
                    {
                        if (*text == Ch('\0'))
                            RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                        ++text;
                    }

                    // Set pi value (verbatim, no entity expansion or whitespace normalization)
                    pi->value(value, text - value);

                    // Place zero terminator after name and value
                    if (!(Flags & parse_no_string_terminators))
                    {
                        pi->name()[pi->name_size()] = Ch('\0');
                        pi->value()[pi->value_size()] = Ch('\0');
                    }

                    text += 2;                          // Skip '?>'
                    return pi;
                }
                else
                {
                    // Skip to '?>'
                    while (text[0] != Ch('?') || text[1] != Ch('>'))
                    {
                        if (*text == Ch('\0'))
                            RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                        ++text;
                    }
                    text += 2;    // Skip '?>'
                    return 0;
                }
            }

            // Parse and append data
            // Return character that ends data.
            // This is necessary because this character might have been overwritten by a terminating 0
            template<int Flags>
            Ch parse_and_append_data(xml_node<Ch> *node, Ch *&text, Ch *contents_start)
            {
                // Backup to contents start if whitespace trimming is disabled
                if (!(Flags & parse_trim_whitespace))
                    text = contents_start;

                // Skip until end of data
                Ch *value = text, *end;
                if (Flags & parse_normalize_whitespace)
                    end = skip_and_expand_character_refs<text_pred, text_pure_with_ws_pred, Flags>(text);
                else
                    end = skip_and_expand_character_refs<text_pred, text_pure_no_ws_pred, Flags>(text);

                // Trim trailing whitespace if flag is set; leading was already trimmed by whitespace skip after >
                if (Flags & parse_trim_whitespace)
                {
                    if (Flags & parse_normalize_whitespace)
                    {
                        // Whitespace is already condensed to single space characters by skipping function, so just trim 1 char off the end
                        if (*(end - 1) == Ch(' '))
                            --end;
                    }
                    else
                    {
                        // Backup until non-whitespace character is found
                        while (whitespace_pred::test(*(end - 1)))
                            --end;
                    }
                }

                // If characters are still left between end and value (this test is only necessary if normalization is enabled)
                // Create new data node
                if (!(Flags & parse_no_data_nodes))
                {
                    xml_node<Ch> *data = this->allocate_node(node_data);
                    data->value(value, end - value);
                    node->append_node(data);
                }

                // Add data to parent node if no data exists yet
                if (!(Flags & parse_no_element_values))
                    if (*node->value() == Ch('\0'))
                        node->value(value, end - value);

                // Place zero terminator after value
                if (!(Flags & parse_no_string_terminators))
                {
                    Ch ch = *text;
                    *end = Ch('\0');
                    return ch;      // Return character that ends data; this is required because zero terminator overwritten it
                }

                // Return character that ends data
                return *text;
            }

            // Parse CDATA
            template<int Flags>
            xml_node<Ch> *parse_cdata(Ch *&text)
            {
                // If CDATA is disabled
                if (Flags & parse_no_data_nodes)
                {
                    // Skip until end of cdata
                    while (text[0] != Ch(']') || text[1] != Ch(']') || text[2] != Ch('>'))
                    {
                        if (!text[0])
                            RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                        ++text;
                    }
                    text += 3;      // Skip ]]>
                    return 0;       // Do not produce CDATA node
                }

                // Skip until end of cdata
                Ch *value = text;
                while (text[0] != Ch(']') || text[1] != Ch(']') || text[2] != Ch('>'))
                {
                    if (!text[0])
                        RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                    ++text;
                }

                // Create new cdata node
                xml_node<Ch> *cdata = this->allocate_node(node_cdata);
                cdata->value(value, text - value);

                // Place zero terminator after value
                if (!(Flags & parse_no_string_terminators))
                    *text = Ch('\0');

                text += 3;      // Skip ]]>
                return cdata;
            }

            // Parse element node
            template<int Flags>
            xml_node<Ch> *parse_element(Ch *&text)
            {
                // Create element node
                xml_node<Ch> *element = this->allocate_node(node_element);

                // Extract element name
                Ch *name = text;
                skip<node_name_pred, Flags>(text);
                if (text == name)
                    RAPIDXML_PARSE_ERROR("expected element name", text);
                element->name(name, text - name);

                // Skip whitespace between element name and attributes or >
                skip<whitespace_pred, Flags>(text);

                // Parse attributes, if any
                parse_node_attributes<Flags>(text, element);

                // Determine ending type
                if (*text == Ch('>'))
                {
                    ++text;
                    parse_node_contents<Flags>(text, element);
                }
                else if (*text == Ch('/'))
                {
                    ++text;
                    if (*text != Ch('>'))
                        RAPIDXML_PARSE_ERROR("expected >", text);
                    ++text;
                }
                else
                    RAPIDXML_PARSE_ERROR("expected >", text);

                // Place zero terminator after name
                if (!(Flags & parse_no_string_terminators))
                    element->name()[element->name_size()] = Ch('\0');

                // Return parsed element
                return element;
            }

            // Determine node type, and parse it
            template<int Flags>
            xml_node<Ch> *parse_node(Ch *&text)
            {
                // Parse proper node type
                switch (text[0])
                {

                    // <...
                    default:
                        // Parse and append element node
                        return parse_element<Flags>(text);

                    // <?...
                    case Ch('?'):
                        ++text;     // Skip ?
                        if ((text[0] == Ch('x') || text[0] == Ch('X')) &&
                            (text[1] == Ch('m') || text[1] == Ch('M')) &&
                            (text[2] == Ch('l') || text[2] == Ch('L')) &&
                            whitespace_pred::test(text[3]))
                        {
                            // '<?xml ' - xml declaration
                            text += 4;      // Skip 'xml '
                            return parse_xml_declaration<Flags>(text);
                        }
                        else
                        {
                            // Parse PI
                            return parse_pi<Flags>(text);
                        }

                    // <!...
                    case Ch('!'):

                        // Parse proper subset of <! node
                        switch (text[1])
                        {

                            // <!-
                            case Ch('-'):
                                if (text[2] == Ch('-'))
                                {
                                    // '<!--' - xml comment
                                    text += 3;     // Skip '!--'
                                    return parse_comment<Flags>(text);
                                }
                                break;

                            // <![
                            case Ch('['):
                                if (text[2] == Ch('C') && text[3] == Ch('D') && text[4] == Ch('A') &&
                                    text[5] == Ch('T') && text[6] == Ch('A') && text[7] == Ch('['))
                                {
                                    // '<![CDATA[' - cdata
                                    text += 8;     // Skip '![CDATA['
                                    return parse_cdata<Flags>(text);
                                }
                                break;

                            // <!D
                            case Ch('D'):
                                if (text[2] == Ch('O') && text[3] == Ch('C') && text[4] == Ch('T') &&
                                    text[5] == Ch('Y') && text[6] == Ch('P') && text[7] == Ch('E') &&
                                    whitespace_pred::test(text[8]))
                                {
                                    // '<!DOCTYPE ' - doctype
                                    text += 9;      // skip '!DOCTYPE '
                                    return parse_doctype<Flags>(text);
                                }
                                break;

                            default:
                                break;

                        }   // switch

                        // Attempt to skip other, unrecognized node types starting with <!
                        ++text;     // Skip !
                        while (*text != Ch('>'))
                        {
                            if (*text == 0)
                                RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                            ++text;
                        }
                        ++text;     // Skip '>'
                        return 0;   // No node recognized

                }
            }

            // Parse contents of the node - children, data etc.
            template<int Flags>
            void parse_node_contents(Ch *&text, xml_node<Ch> *node)
            {
                // For all children and text
                while (1)
                {
                    // Skip whitespace between > and node contents
                    Ch *contents_start = text;      // Store start of node contents before whitespace is skipped
                    skip<whitespace_pred, Flags>(text);
                    Ch next_char = *text;

                    // After data nodes, instead of continuing the loop, control jumps here.
                    // This is because zero termination inside parse_and_append_data() function
                    // would wreak havoc with the above code.
                    // Also, skipping whitespace after data nodes is unnecessary.
after_data_node:

                    // Determine what comes next: node closing, child node, data node, or 0?
                    switch (next_char)
                    {

                        // Node closing or child node
                        case Ch('<'):
                            if (text[1] == Ch('/'))
                            {
                                // Node closing
                                text += 2;      // Skip '</'
                                if (Flags & parse_validate_closing_tags)
                                {
                                    // Skip and validate closing tag name
                                    Ch *closing_name = text;
                                    skip<node_name_pred, Flags>(text);
                                    if (!internal::compare(node->name(), node->name_size(), closing_name, text - closing_name, true))
                                        RAPIDXML_PARSE_ERROR("invalid closing tag name", text);
                                }
                                else
                                {
                                    // No validation, just skip name
                                    skip<node_name_pred, Flags>(text);
                                }
                                // Skip remaining whitespace after node name
                                skip<whitespace_pred, Flags>(text);
                                if (*text != Ch('>'))
                                    RAPIDXML_PARSE_ERROR("expected >", text);
                                ++text;     // Skip '>'
                                return;     // Node closed, finished parsing contents
                            }
                            else
                            {
                                // Child node
                                ++text;     // Skip '<'
                                if (xml_node<Ch> *child = parse_node<Flags>(text))
                                    node->append_node(child);
                            }
                            break;

                        // End of data - error
                        case Ch('\0'):
                            RAPIDXML_PARSE_ERROR("unexpected end of data", text);

                        // Data node
                        default:
                            next_char = parse_and_append_data<Flags>(node, text, contents_start);
                            goto after_data_node;   // Bypass regular processing after data nodes

                    }
                }
            }

            // Parse XML attributes of the node
            template<int Flags>
            void parse_node_attributes(Ch *&text, xml_node<Ch> *node)
            {
                // For all attributes
                while (attribute_name_pred::test(*text))
                {
                    // Extract attribute name
                    Ch *name = text;
                    ++text;     // Skip first character of attribute name
                    skip<attribute_name_pred, Flags>(text);
                    if (text == name)
                        RAPIDXML_PARSE_ERROR("expected attribute name", name);

                    // Create new attribute
                    xml_attribute<Ch> *attribute = this->allocate_attribute();
                    attribute->name(name, text - name);
                    node->append_attribute(attribute);

                    // Skip whitespace after attribute name
                    skip<whitespace_pred, Flags>(text);

                    // Skip =
                    if (*text != Ch('='))
                        RAPIDXML_PARSE_ERROR("expected =", text);
                    ++text;

                    // Add terminating zero after name
                    if (!(Flags & parse_no_string_terminators))
                        attribute->name()[attribute->name_size()] = 0;

                    // Skip whitespace after =
                    skip<whitespace_pred, Flags>(text);

                    // Skip quote and remember if it was ' or "
                    Ch quote = *text;
                    if (quote != Ch('\'') && quote != Ch('"'))
                        RAPIDXML_PARSE_ERROR("expected ' or \"", text);
                    ++text;

                    // Extract attribute value and expand char refs in it
                    Ch *value = text, *end;
                    const int AttFlags = Flags &
                                         ~parse_normalize_whitespace;   // No whitespace normalization in attributes
                    if (quote == Ch('\''))
                        end = skip_and_expand_character_refs<attribute_value_pred<Ch('\'')>, attribute_value_pure_pred<Ch('\'')>, AttFlags>
                              (text);
                    else
                        end = skip_and_expand_character_refs<attribute_value_pred<Ch('"')>, attribute_value_pure_pred<Ch('"')>, AttFlags>
                              (text);

                    // Set attribute value
                    attribute->value(value, end - value);

                    // Make sure that end quote is present
                    if (*text != quote)
                        RAPIDXML_PARSE_ERROR("expected ' or \"", text);
                    ++text;     // Skip quote

                    // Add terminating zero after value
                    if (!(Flags & parse_no_string_terminators))
                        attribute->value()[attribute->value_size()] = 0;

                    // Skip whitespace after attribute value
                    skip<whitespace_pred, Flags>(text);
                }
            }

    };

    //! \cond internal
    namespace internal
    {

        // Whitespace (space \n \r \t)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_whitespace[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  0,  0,  1,  0,  0,  // 0
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 1
            1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 2
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 3
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 4
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 5
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 6
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 7
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 8
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // 9
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // A
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // B
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // C
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // D
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  // E
            0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0   // F
        };

        // Node name (anything but space \n \r \t / > ? \0)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_node_name[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  0,  0,  1,  1,  0,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  0,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Text (i.e. PCDATA) (anything but < \0)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_text[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  1,  1,  1,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Text (i.e. PCDATA) that does not require processing when ws normalization is disabled
        // (anything but < \0 &)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_text_pure_no_ws[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            1,  1,  1,  1,  1,  1,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  1,  1,  1,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Text (i.e. PCDATA) that does not require processing when ws normalizationis is enabled
        // (anything but < \0 & space \n \r \t)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_text_pure_with_ws[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  0,  0,  1,  1,  0,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            0,  1,  1,  1,  1,  1,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  1,  1,  1,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Attribute name (anything but space \n \r \t / < > = ? ! \0)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_attribute_name[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  0,  0,  1,  1,  0,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            0,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  0,  0,  0,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Attribute data with single quote (anything but ' \0)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_attribute_data_1[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            1,  1,  1,  1,  1,  1,  1,  0,  1,  1,  1,  1,  1,  1,  1,  1,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Attribute data with single quote that does not require processing (anything but ' \0 &)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_attribute_data_1_pure[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            1,  1,  1,  1,  1,  1,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Attribute data with double quote (anything but " \0)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_attribute_data_2[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            1,  1,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Attribute data with double quote that does not require processing (anything but " \0 &)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_attribute_data_2_pure[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 0
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 1
            1,  1,  0,  1,  1,  1,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 2
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 3
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 4
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 5
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 6
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 7
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 8
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // 9
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // A
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // B
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // C
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // D
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  // E
            1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1   // F
        };

        // Digits (dec and hex, 255 denotes end of numeric character reference)
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_digits[256] =
        {
            // 0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 0
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 1
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 2
            0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 255, 255, 255, 255, 255, 255, // 3
            255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 4
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 5
            255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 6
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 7
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 8
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 9
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // A
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // B
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // C
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // D
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // E
            255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 // F
        };

        // Upper case conversion
        template<int Dummy>
        const unsigned char lookup_tables<Dummy>::lookup_upcase[256] =
        {
            // 0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  A   B   C   D   E   F
            0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15,   // 0
            16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,   // 1
            32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,   // 2
            48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,   // 3
            64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,   // 4
            80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,   // 5
            96, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,   // 6
            80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 123, 124, 125, 126, 127, // 7
            128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, // 8
            144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, // 9
            160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, // A
            176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, // B
            192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, // C
            208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, // D
            224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, // E
            240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255 // F
        };
    }
    //! \endcond

}

// Undefine internal macros
#undef RAPIDXML_PARSE_ERROR

// On MSVC, restore warnings state
#ifdef _MSC_VER
#pragma warning(pop)
#endif

#endif