rapidxml.hpp

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// ----------------------------------------------------------------------------
// Copyright (C) 2006, 2009 Marcin Kalicinski
//
// Distributed under the Boost Software License, Version 1.0. 
// (See accompanying file LICENSE_1_0.txt or copy at 
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see www.boost.org
// ----------------------------------------------------------------------------
#ifndef BOOST_PROPERTY_TREE_RAPIDXML_HPP_INCLUDED
#define BOOST_PROPERTY_TREE_RAPIDXML_HPP_INCLUDED
 
 
#include <boost/assert.hpp>
#include <cstdlib>      // For std::size_t
#include <new>          // For placement new
 
// 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
 
// BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR
    
#include <exception>    // For std::exception
 
#define BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR(what, where) throw parse_error(what, where)
 
namespace boost { namespace property_tree { namespace detail {namespace rapidxml
{
 
    class parse_error: public std::exception
    {
    
    public:
    
        parse_error(const char *wa, void *we)
            : m_what(wa)
            , m_where(we)
        {
        }
 
        virtual const char *what() const throw()
        {
            return m_what;
        }
 
        template<class Ch>
        Ch *where() const
        {
            return reinterpret_cast<Ch *>(m_where);
        }
 
    private:  
 
        const char *m_what;
        void *m_where;
 
    };
}}}}
 
// Pool sizes
 
#ifndef BOOST_PROPERTY_TREE_RAPIDXML_STATIC_POOL_SIZE
    // Size of static memory block of memory_pool.
    // Define BOOST_PROPERTY_TREE_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 BOOST_PROPERTY_TREE_RAPIDXML_STATIC_POOL_SIZE (64 * 1024)
#endif
 
#ifndef BOOST_PROPERTY_TREE_RAPIDXML_DYNAMIC_POOL_SIZE
    // Size of dynamic memory block of memory_pool.
    // Define BOOST_PROPERTY_TREE_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 BOOST_PROPERTY_TREE_RAPIDXML_DYNAMIC_POOL_SIZE (64 * 1024)
#endif
 
#ifndef BOOST_PROPERTY_TREE_RAPIDXML_ALIGNMENT
    // Memory allocation alignment.
    // Define BOOST_PROPERTY_TREE_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 BOOST_PROPERTY_TREE_RAPIDXML_ALIGNMENT sizeof(void *)
#endif
 
namespace boost { namespace property_tree { namespace detail {namespace rapidxml
{
    // Forward declarations
    template<class Ch> class xml_node;
    template<class Ch> class xml_attribute;
    template<class Ch> class xml_document;
    
    enum node_type
    {
        node_document,      
        node_element,       
        node_data,          
        node_cdata,         
        node_comment,       
        node_declaration,   
        node_doctype,       
        node_pi             
    };
 
    // Parsing flags
 
    const int parse_no_data_nodes = 0x1;            
 
    const int parse_no_element_values = 0x2;
    
    const int parse_no_string_terminators = 0x4;
    
    const int parse_no_entity_translation = 0x8;
    
    const int parse_no_utf8 = 0x10;
    
    const int parse_declaration_node = 0x20;
    
    const int parse_comment_nodes = 0x40;
    
    const int parse_doctype_node = 0x80;
    
    const int parse_pi_nodes = 0x100;
    
    const int parse_validate_closing_tags = 0x200;
    
    const int parse_trim_whitespace = 0x400;
 
    const int parse_normalize_whitespace = 0x800;
 
    // Compound flags
    
    const int parse_default = 0;
    
    const int parse_non_destructive = parse_no_string_terminators | parse_no_entity_translation;
    
    const int parse_fastest = parse_non_destructive | parse_no_data_nodes;
    
    const int parse_full = parse_declaration_node | parse_comment_nodes | parse_doctype_node | parse_pi_nodes | parse_validate_closing_tags;
 
    // Internals
 
    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;
        }
 
        template<class Ch>
        inline size_t get_index(const Ch c)
        {
            // If not ASCII char, its semantic is same as plain 'z'.
            // char could be signed, so first stretch and make unsigned.
            unsigned n = c;
            if (n > 127)
            {
                return 'z';
            }
            return c;
        }
    }
 
    // Memory pool
    
    template<class Ch = char>
    class memory_pool
    {
        
    public:
 
        // Prefixed names to work around weird MSVC lookup bug.
        typedef void *(boost_ptree_raw_alloc_func)(std::size_t);       // Type of user-defined function used to allocate memory
        typedef void (boost_ptree_raw_free_func)(void *);              // Type of user-defined function used to free memory
        
        memory_pool()
            : m_alloc_func(0)
            , m_free_func(0)
        {
            init();
        }
 
        ~memory_pool()
        {
            clear();
        }
 
        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;
        }
 
        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;
        }
 
        Ch *allocate_string(const Ch *source = 0, std::size_t size = 0)
        {
            BOOST_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;
        }
 
        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;
        }
 
        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();
        }
 
        void set_allocator(boost_ptree_raw_alloc_func *af, boost_ptree_raw_free_func *ff)
        {
            BOOST_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 = ((BOOST_PROPERTY_TREE_RAPIDXML_ALIGNMENT - (std::size_t(ptr) & (BOOST_PROPERTY_TREE_RAPIDXML_ALIGNMENT - 1))) & (BOOST_PROPERTY_TREE_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);
                BOOST_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];
            }
            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 BOOST_PROPERTY_TREE_RAPIDXML_DYNAMIC_POOL_SIZE)
                std::size_t pool_size = BOOST_PROPERTY_TREE_RAPIDXML_DYNAMIC_POOL_SIZE;
                if (pool_size < size)
                    pool_size = size;
                
                // Allocate
                std::size_t alloc_size = sizeof(header) + (2 * BOOST_PROPERTY_TREE_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[BOOST_PROPERTY_TREE_RAPIDXML_STATIC_POOL_SIZE];    // Static raw memory
        boost_ptree_raw_alloc_func *m_alloc_func;           // Allocator function, or 0 if default is to be used
        boost_ptree_raw_free_func *m_free_func;             // Free function, or 0 if default is to be used
    };
 
    // XML base
 
    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
    
        Ch *name() const
        {
            return m_name ? m_name : nullstr();
        }
 
        std::size_t name_size() const
        {
            return m_name ? m_name_size : 0;
        }
 
        Ch *value() const
        {
            return m_value ? m_value : nullstr();
        }
 
        std::size_t value_size() const
        {
            return m_value ? m_value_size : 0;
        }
 
        // Node modification
    
        void name(const Ch *n, std::size_t size)
        {
            m_name = const_cast<Ch *>(n);
            m_name_size = size;
        }
 
        void name(const Ch *n)
        {
            name(n, internal::measure(n));
        }
 
        void value(const Ch *val, std::size_t size)
        {
            m_value = const_cast<Ch *>(val);
            m_value_size = size;
        }
 
        void value(const Ch *val)
        {
            this->value(val, internal::measure(val));
        }
 
        // Related nodes access
    
        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
 
    };
 
    template<class Ch = char>
    class xml_attribute: public xml_base<Ch>
    {
 
        friend class xml_node<Ch>;
    
    public:
 
        // Construction & destruction
    
        xml_attribute()
        {
        }
 
        // Related nodes access
    
        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;
        }
 
        xml_attribute<Ch> *previous_attribute(const Ch *n = 0, std::size_t nsize = 0, bool case_sensitive = true) const
        {
            if (n)
            {
                if (nsize == 0)
                    nsize = internal::measure(n);
                for (xml_attribute<Ch> *attribute = m_prev_attribute; attribute; attribute = attribute->m_prev_attribute)
                    if (internal::compare(attribute->name(), attribute->name_size(), n, nsize, case_sensitive))
                        return attribute;
                return 0;
            }
            else
                return this->m_parent ? m_prev_attribute : 0;
        }
 
        xml_attribute<Ch> *next_attribute(const Ch *n = 0, std::size_t nsize = 0, bool case_sensitive = true) const
        {
            if (n)
            {
                if (nsize == 0)
                    nsize = internal::measure(n);
                for (xml_attribute<Ch> *attribute = m_next_attribute; attribute; attribute = attribute->m_next_attribute)
                    if (internal::compare(attribute->name(), attribute->name_size(), n, nsize, 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
 
    template<class Ch = char>
    class xml_node: public xml_base<Ch>
    {
 
    public:
 
        // Construction & destruction
    
        xml_node(node_type t)
            : m_type(t)
            , m_first_node(0)
            , m_first_attribute(0)
        {
        }
 
        // Node data access
    
        node_type type() const
        {
            return m_type;
        }
 
        // Related nodes access
    
        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;
        }
 
        xml_node<Ch> *first_node(const Ch *n = 0, std::size_t nsize = 0, bool case_sensitive = true) const
        {
            if (n)
            {
                if (nsize == 0)
                    nsize = internal::measure(n);
                for (xml_node<Ch> *child = m_first_node; child; child = child->next_sibling())
                    if (internal::compare(child->name(), child->name_size(), n, nsize, case_sensitive))
                        return child;
                return 0;
            }
            else
                return m_first_node;
        }
 
        xml_node<Ch> *last_node(const Ch *n = 0, std::size_t nsize = 0, bool case_sensitive = true) const
        {
            BOOST_ASSERT(m_first_node);  // Cannot query for last child if node has no children
            if (n)
            {
                if (nsize == 0)
                    nsize = internal::measure(n);
                for (xml_node<Ch> *child = m_last_node; child; child = child->previous_sibling())
                    if (internal::compare(child->name(), child->name_size(), n, nsize, case_sensitive))
                        return child;
                return 0;
            }
            else
                return m_last_node;
        }
 
        xml_node<Ch> *previous_sibling(const Ch *n = 0, std::size_t nsize = 0, bool case_sensitive = true) const
        {
            BOOST_ASSERT(this->m_parent);     // Cannot query for siblings if node has no parent
            if (n)
            {
                if (nsize == 0)
                    nsize = internal::measure(n);
                for (xml_node<Ch> *sibling = m_prev_sibling; sibling; sibling = sibling->m_prev_sibling)
                    if (internal::compare(sibling->name(), sibling->name_size(), n, nsize, case_sensitive))
                        return sibling;
                return 0;
            }
            else
                return m_prev_sibling;
        }
 
        xml_node<Ch> *next_sibling(const Ch *n = 0, std::size_t nsize = 0, bool case_sensitive = true) const
        {
            BOOST_ASSERT(this->m_parent);     // Cannot query for siblings if node has no parent
            if (n)
            {
                if (nsize == 0)
                    nsize = internal::measure(n);
                for (xml_node<Ch> *sibling = m_next_sibling; sibling; sibling = sibling->m_next_sibling)
                    if (internal::compare(sibling->name(), sibling->name_size(), n, nsize, case_sensitive))
                        return sibling;
                return 0;
            }
            else
                return m_next_sibling;
        }
 
        xml_attribute<Ch> *first_attribute(const Ch *n = 0, std::size_t nsize = 0, bool case_sensitive = true) const
        {
            if (n)
            {
                if (nsize == 0)
                    nsize = internal::measure(n);
                for (xml_attribute<Ch> *attribute = m_first_attribute; attribute; attribute = attribute->m_next_attribute)
                    if (internal::compare(attribute->name(), attribute->name_size(), n, nsize, case_sensitive))
                        return attribute;
                return 0;
            }
            else
                return m_first_attribute;
        }
 
        xml_attribute<Ch> *last_attribute(const Ch *n = 0, std::size_t nsize = 0, bool case_sensitive = true) const
        {
            if (n)
            {
                if (nsize == 0)
                    nsize = internal::measure(n);
                for (xml_attribute<Ch> *attribute = m_last_attribute; attribute; attribute = attribute->m_prev_attribute)
                    if (internal::compare(attribute->name(), attribute->name_size(), n, nsize, case_sensitive))
                        return attribute;
                return 0;
            }
            else
                return m_first_attribute ? m_last_attribute : 0;
        }
 
        // Node modification
    
        void type(node_type t)
        {
            m_type = t;
        }
 
        // Node manipulation
 
        void prepend_node(xml_node<Ch> *child)
        {
            BOOST_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;
        }
 
        void append_node(xml_node<Ch> *child)
        {
            BOOST_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;
        }
 
        void insert_node(xml_node<Ch> *where, xml_node<Ch> *child)
        {
            BOOST_ASSERT(!where || where->parent() == this);
            BOOST_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;
            }
        }
 
        void remove_first_node()
        {
            BOOST_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;
        }
 
        void remove_last_node()
        {
            BOOST_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;
        }
 
        // \param where Pointer to child to be removed.
        void remove_node(xml_node<Ch> *where)
        {
            BOOST_ASSERT(where && where->parent() == this);
            BOOST_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;
            }
        }
 
        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;
        }
 
        void prepend_attribute(xml_attribute<Ch> *attribute)
        {
            BOOST_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;
        }
 
        void append_attribute(xml_attribute<Ch> *attribute)
        {
            BOOST_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;
        }
 
        void insert_attribute(xml_attribute<Ch> *where, xml_attribute<Ch> *attribute)
        {
            BOOST_ASSERT(!where || where->parent() == this);
            BOOST_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;
            }
        }
 
        void remove_first_attribute()
        {
            BOOST_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;
        }
 
        void remove_last_attribute()
        {
            BOOST_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;
        }
 
        void remove_attribute(xml_attribute<Ch> *where)
        {
            BOOST_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;
            }
        }
 
        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
    
    template<class Ch = char>
    class xml_document: public xml_node<Ch>, public memory_pool<Ch>
    {
    
    public:
 
        xml_document()
            : xml_node<Ch>(node_document)
        {
        }
 
        template<int Flags>
        void parse(Ch *text)
        {
            BOOST_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
                    BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("expected <", text);
            }
 
        }
 
        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[internal::get_index(ch)];
            }
        };
 
        // Detect node name character
        struct node_name_pred
        {
            static unsigned char test(Ch ch)
            {
                return internal::lookup_tables<0>::lookup_node_name[internal::get_index(ch)];
            }
        };
 
        // Detect attribute name character
        struct attribute_name_pred
        {
            static unsigned char test(Ch ch)
            {
                return internal::lookup_tables<0>::lookup_attribute_name[internal::get_index(ch)];
            }
        };
 
        // Detect text character (PCDATA)
        struct text_pred
        {
            static unsigned char test(Ch ch)
            {
                return internal::lookup_tables<0>::lookup_text[internal::get_index(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[internal::get_index(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[internal::get_index(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[internal::get_index(ch)];
                if (Quote == Ch('\"'))
                    return internal::lookup_tables<0>::lookup_attribute_data_2[internal::get_index(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[internal::get_index(ch)];
                if (Quote == Ch('\"'))
                    return internal::lookup_tables<0>::lookup_attribute_data_2_pure[internal::get_index(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
                {
                    BOOST_PROPERTY_TREE_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
                                BOOST_PROPERTY_TREE_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 UTF-8 BOM, if any
        template<int Flags>
        void parse_bom(char *&text)
        {
            if (static_cast<unsigned char>(text[0]) == 0xEF && 
                static_cast<unsigned char>(text[1]) == 0xBB && 
                static_cast<unsigned char>(text[2]) == 0xBF)
            {
                text += 3;
            }
        }
        
        // Parse UTF-16/32 BOM, if any
        template<int Flags>
        void parse_bom(wchar_t *&text)
        {
            const wchar_t bom = 0xFEFF;
            if (text[0] == bom)
            {
                ++text;
            }
        }
 
        // 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])
                        BOOST_PROPERTY_TREE_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('>'))
                BOOST_PROPERTY_TREE_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])
                        BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                    ++text;
                }
                text += 3;     // Skip '-->'
                return 0;      // Do not produce comment node
            }
 
            // Remember value start
            Ch *val = text;
 
            // Skip until end of comment
            while (text[0] != Ch('-') || text[1] != Ch('-') || text[2] != Ch('>'))
            {
                if (!text[0])
                    BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                ++text;
            }
 
            // Create comment node
            xml_node<Ch> *comment = this->allocate_node(node_comment);
            comment->value(val, text - val);
            
            // 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 *val = 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: BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                            default: break;
                        }
                        ++text;
                    }
                    break;
                }
                
                // Error on end of text
                case Ch('\0'):
                    BOOST_PROPERTY_TREE_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(val, text - val);
                
                // 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 *n = text;
                skip<node_name_pred, Flags>(text);
                if (text == n)
                    BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("expected PI target", text);
                pi->name(n, text - n);
                
                // Skip whitespace between pi target and pi
                skip<whitespace_pred, Flags>(text);
 
                // Remember start of pi
                Ch *val = text;
                
                // Skip to '?>'
                while (text[0] != Ch('?') || text[1] != Ch('>'))
                {
                    if (*text == Ch('\0'))
                        BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                    ++text;
                }
 
                // Set pi value (verbatim, no entity expansion or whitespace normalization)
                pi->value(val, text - val);
 
                // 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'))
                        BOOST_PROPERTY_TREE_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 *val = 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(val, end - val);
                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(val, end - val);
 
            // 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])
                        BOOST_PROPERTY_TREE_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 *val = text;
            while (text[0] != Ch(']') || text[1] != Ch(']') || text[2] != Ch('>'))
            {
                if (!text[0])
                    BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("unexpected end of data", text);
                ++text;
            }
 
            // Create new cdata node
            xml_node<Ch> *cdata = this->allocate_node(node_cdata);
            cdata->value(val, text - val);
 
            // 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 *n = text;
            skip<node_name_pred, Flags>(text);
            if (text == n)
                BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("expected element name", text);
            element->name(n, text - n);
            
            // 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('>'))
                    BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("expected >", text);
                ++text;
            }
            else
                BOOST_PROPERTY_TREE_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)
                        BOOST_PROPERTY_TREE_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
                if (Flags & parse_trim_whitespace)
                    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))
                                BOOST_PROPERTY_TREE_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('>'))
                            BOOST_PROPERTY_TREE_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'):
                    BOOST_PROPERTY_TREE_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 *n = text;
                ++text;     // Skip first character of attribute name
                skip<attribute_name_pred, Flags>(text);
                if (text == n)
                    BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("expected attribute name", n);
 
                // Create new attribute
                xml_attribute<Ch> *attribute = this->allocate_attribute();
                attribute->name(n, text - n);
                node->append_attribute(attribute);
 
                // Skip whitespace after attribute name
                skip<whitespace_pred, Flags>(text);
 
                // Skip =
                if (*text != Ch('='))
                    BOOST_PROPERTY_TREE_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('"'))
                    BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR("expected ' or \"", text);
                ++text;
 
                // Extract attribute value and expand char refs in it
                Ch *val = 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(val, end - val);
                
                // Make sure that end quote is present
                if (*text != quote)
                    BOOST_PROPERTY_TREE_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);
            }
        }
 
    };
 
    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
        };
    }
 
}}}}
 
// Undefine internal macros
#undef BOOST_PROPERTY_TREE_RAPIDXML_PARSE_ERROR
 
// On MSVC, restore warnings state
#ifdef _MSC_VER
    #pragma warning(pop)
#endif
 
#endif