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JSON Spirit parser.

cl-refactor
Gav Wood 11 years ago
parent
87e19602ea
commit
ed7c0e75a4
14 changed files with 2163 additions and 0 deletions
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  1. 10
      json_spirit/CMakeLists.txt
  2. 18
      json_spirit/json_spirit.h
  3. 209
      json_spirit/json_spirit.vcproj
  4. 54
      json_spirit/json_spirit_error_position.h
  5. 137
      json_spirit/json_spirit_reader.cpp
  6. 62
      json_spirit/json_spirit_reader.h
  7. 612
      json_spirit/json_spirit_reader_template.h
  8. 70
      json_spirit/json_spirit_stream_reader.h
  9. 61
      json_spirit/json_spirit_utils.h
  10. 8
      json_spirit/json_spirit_value.cpp
  11. 532
      json_spirit/json_spirit_value.h
  12. 95
      json_spirit/json_spirit_writer.cpp
  13. 50
      json_spirit/json_spirit_writer.h
  14. 245
      json_spirit/json_spirit_writer_template.h

10
json_spirit/CMakeLists.txt
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@ -0,0 +1,10 @@
SET(JSON_SPIRIT_SRCS
json_spirit_reader.cpp
json_spirit_value.cpp
json_spirit_writer.cpp)
FIND_PACKAGE(Boost 1.34 REQUIRED)
INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIR})
ADD_LIBRARY(json_spirit STATIC ${JSON_SPIRIT_SRCS})

18
json_spirit/json_spirit.h
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#ifndef JSON_SPIRIT
#define JSON_SPIRIT
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_value.h"
#include "json_spirit_reader.h"
#include "json_spirit_writer.h"
#include "json_spirit_utils.h"
#endif

209
json_spirit/json_spirit.vcproj
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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
ProjectType="Visual C++"
Version="8.00"
Name="json_spirit_lib"
ProjectGUID="{BE262A86-CC26-4B25-A877-883ED2688CEC}"
RootNamespace="json_spirit"
Keyword="Win32Proj"
>
<Platforms>
<Platform
Name="Win32"
/>
</Platforms>
<ToolFiles>
</ToolFiles>
<Configurations>
<Configuration
Name="Debug|Win32"
OutputDirectory="$(SolutionDir)$(ConfigurationName)"
IntermediateDirectory="$(ConfigurationName)"
ConfigurationType="4"
CharacterSet="1"
>
<Tool
Name="VCPreBuildEventTool"
/>
<Tool
Name="VCCustomBuildTool"
/>
<Tool
Name="VCXMLDataGeneratorTool"
/>
<Tool
Name="VCWebServiceProxyGeneratorTool"
/>
<Tool
Name="VCMIDLTool"
/>
<Tool
Name="VCCLCompilerTool"
AdditionalOptions="&#x0D;&#x0A;"
Optimization="0"
PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
MinimalRebuild="true"
BasicRuntimeChecks="3"
RuntimeLibrary="3"
DisableLanguageExtensions="false"
UsePrecompiledHeader="0"
WarningLevel="3"
Detect64BitPortabilityProblems="true"
DebugInformationFormat="4"
/>
<Tool
Name="VCManagedResourceCompilerTool"
/>
<Tool
Name="VCResourceCompilerTool"
/>
<Tool
Name="VCPreLinkEventTool"
/>
<Tool
Name="VCLibrarianTool"
/>
<Tool
Name="VCALinkTool"
/>
<Tool
Name="VCXDCMakeTool"
/>
<Tool
Name="VCBscMakeTool"
/>
<Tool
Name="VCFxCopTool"
/>
<Tool
Name="VCPostBuildEventTool"
/>
</Configuration>
<Configuration
Name="Release|Win32"
OutputDirectory="$(SolutionDir)$(ConfigurationName)"
IntermediateDirectory="$(ConfigurationName)"
ConfigurationType="4"
CharacterSet="1"
WholeProgramOptimization="1"
>
<Tool
Name="VCPreBuildEventTool"
/>
<Tool
Name="VCCustomBuildTool"
/>
<Tool
Name="VCXMLDataGeneratorTool"
/>
<Tool
Name="VCWebServiceProxyGeneratorTool"
/>
<Tool
Name="VCMIDLTool"
/>
<Tool
Name="VCCLCompilerTool"
Optimization="2"
EnableIntrinsicFunctions="false"
FavorSizeOrSpeed="0"
PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
RuntimeLibrary="2"
BufferSecurityCheck="false"
UsePrecompiledHeader="0"
WarningLevel="3"
Detect64BitPortabilityProblems="true"
DebugInformationFormat="3"
/>
<Tool
Name="VCManagedResourceCompilerTool"
/>
<Tool
Name="VCResourceCompilerTool"
/>
<Tool
Name="VCPreLinkEventTool"
/>
<Tool
Name="VCLibrarianTool"
/>
<Tool
Name="VCALinkTool"
/>
<Tool
Name="VCXDCMakeTool"
/>
<Tool
Name="VCBscMakeTool"
/>
<Tool
Name="VCFxCopTool"
/>
<Tool
Name="VCPostBuildEventTool"
/>
</Configuration>
</Configurations>
<References>
</References>
<Files>
<Filter
Name="Source Files"
Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
>
<File
RelativePath=".\json_spirit_reader.cpp"
>
</File>
<File
RelativePath=".\json_spirit_writer.cpp"
>
</File>
</Filter>
<Filter
Name="Header Files"
Filter="h;hpp;hxx;hm;inl;inc;xsd"
UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
>
<File
RelativePath=".\json_spirit.h"
>
</File>
<File
RelativePath=".\json_spirit_error_position.h"
>
</File>
<File
RelativePath=".\json_spirit_reader.h"
>
</File>
<File
RelativePath=".\json_spirit_reader_template.h"
>
</File>
<File
RelativePath=".\json_spirit_stream_reader.h"
>
</File>
<File
RelativePath=".\json_spirit_utils.h"
>
</File>
<File
RelativePath=".\json_spirit_value.h"
>
</File>
<File
RelativePath=".\json_spirit_writer.h"
>
</File>
<File
RelativePath=".\json_spirit_writer_template.h"
>
</File>
</Filter>
</Files>
<Globals>
</Globals>
</VisualStudioProject>

54
json_spirit/json_spirit_error_position.h
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#ifndef JSON_SPIRIT_ERROR_POSITION
#define JSON_SPIRIT_ERROR_POSITION
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include <string>
namespace json_spirit
{
// An Error_position exception is thrown by the "read_or_throw" functions below on finding an error.
// Note the "read_or_throw" functions are around 3 times slower than the standard functions "read"
// functions that return a bool.
//
struct Error_position
{
Error_position();
Error_position( unsigned int line, unsigned int column, const std::string& reason );
bool operator==( const Error_position& lhs ) const;
unsigned int line_;
unsigned int column_;
std::string reason_;
};
inline Error_position::Error_position()
: line_( 0 )
, column_( 0 )
{
}
inline Error_position::Error_position( unsigned int line, unsigned int column, const std::string& reason )
: line_( line )
, column_( column )
, reason_( reason )
{
}
inline bool Error_position::operator==( const Error_position& lhs ) const
{
if( this == &lhs ) return true;
return ( reason_ == lhs.reason_ ) &&
( line_ == lhs.line_ ) &&
( column_ == lhs.column_ );
}
}
#endif

137
json_spirit/json_spirit_reader.cpp
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// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#include "json_spirit_reader.h"
#include "json_spirit_reader_template.h"
using namespace json_spirit;
bool json_spirit::read( const std::string& s, Value& value )
{
return read_string( s, value );
}
void json_spirit::read_or_throw( const std::string& s, Value& value )
{
read_string_or_throw( s, value );
}
bool json_spirit::read( std::istream& is, Value& value )
{
return read_stream( is, value );
}
void json_spirit::read_or_throw( std::istream& is, Value& value )
{
read_stream_or_throw( is, value );
}
bool json_spirit::read( std::string::const_iterator& begin, std::string::const_iterator end, Value& value )
{
return read_range( begin, end, value );
}
void json_spirit::read_or_throw( std::string::const_iterator& begin, std::string::const_iterator end, Value& value )
{
begin = read_range_or_throw( begin, end, value );
}
#ifndef BOOST_NO_STD_WSTRING
bool json_spirit::read( const std::wstring& s, wValue& value )
{
return read_string( s, value );
}
void json_spirit::read_or_throw( const std::wstring& s, wValue& value )
{
read_string_or_throw( s, value );
}
bool json_spirit::read( std::wistream& is, wValue& value )
{
return read_stream( is, value );
}
void json_spirit::read_or_throw( std::wistream& is, wValue& value )
{
read_stream_or_throw( is, value );
}
bool json_spirit::read( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wValue& value )
{
return read_range( begin, end, value );
}
void json_spirit::read_or_throw( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wValue& value )
{
begin = read_range_or_throw( begin, end, value );
}
#endif
bool json_spirit::read( const std::string& s, mValue& value )
{
return read_string( s, value );
}
void json_spirit::read_or_throw( const std::string& s, mValue& value )
{
read_string_or_throw( s, value );
}
bool json_spirit::read( std::istream& is, mValue& value )
{
return read_stream( is, value );
}
void json_spirit::read_or_throw( std::istream& is, mValue& value )
{
read_stream_or_throw( is, value );
}
bool json_spirit::read( std::string::const_iterator& begin, std::string::const_iterator end, mValue& value )
{
return read_range( begin, end, value );
}
void json_spirit::read_or_throw( std::string::const_iterator& begin, std::string::const_iterator end, mValue& value )
{
begin = read_range_or_throw( begin, end, value );
}
#ifndef BOOST_NO_STD_WSTRING
bool json_spirit::read( const std::wstring& s, wmValue& value )
{
return read_string( s, value );
}
void json_spirit::read_or_throw( const std::wstring& s, wmValue& value )
{
read_string_or_throw( s, value );
}
bool json_spirit::read( std::wistream& is, wmValue& value )
{
return read_stream( is, value );
}
void json_spirit::read_or_throw( std::wistream& is, wmValue& value )
{
read_stream_or_throw( is, value );
}
bool json_spirit::read( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wmValue& value )
{
return read_range( begin, end, value );
}
void json_spirit::read_or_throw( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wmValue& value )
{
begin = read_range_or_throw( begin, end, value );
}
#endif

62
json_spirit/json_spirit_reader.h
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#ifndef JSON_SPIRIT_READER
#define JSON_SPIRIT_READER
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_value.h"
#include "json_spirit_error_position.h"
#include <iostream>
namespace json_spirit
{
// functions to reads a JSON values
bool read( const std::string& s, Value& value );
bool read( std::istream& is, Value& value );
bool read( std::string::const_iterator& begin, std::string::const_iterator end, Value& value );
void read_or_throw( const std::string& s, Value& value );
void read_or_throw( std::istream& is, Value& value );
void read_or_throw( std::string::const_iterator& begin, std::string::const_iterator end, Value& value );
#ifndef BOOST_NO_STD_WSTRING
bool read( const std::wstring& s, wValue& value );
bool read( std::wistream& is, wValue& value );
bool read( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wValue& value );
void read_or_throw( const std::wstring& s, wValue& value );
void read_or_throw( std::wistream& is, wValue& value );
void read_or_throw( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wValue& value );
#endif
bool read( const std::string& s, mValue& value );
bool read( std::istream& is, mValue& value );
bool read( std::string::const_iterator& begin, std::string::const_iterator end, mValue& value );
void read_or_throw( const std::string& s, mValue& value );
void read_or_throw( std::istream& is, mValue& value );
void read_or_throw( std::string::const_iterator& begin, std::string::const_iterator end, mValue& value );
#ifndef BOOST_NO_STD_WSTRING
bool read( const std::wstring& s, wmValue& value );
bool read( std::wistream& is, wmValue& value );
bool read( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wmValue& value );
void read_or_throw( const std::wstring& s, wmValue& value );
void read_or_throw( std::wistream& is, wmValue& value );
void read_or_throw( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wmValue& value );
#endif
}
#endif

612
json_spirit/json_spirit_reader_template.h
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#ifndef JSON_SPIRIT_READER_TEMPLATE
#define JSON_SPIRIT_READER_TEMPLATE
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#include "json_spirit_value.h"
#include "json_spirit_error_position.h"
//#define BOOST_SPIRIT_THREADSAFE // uncomment for multithreaded use, requires linking to boost.thread
#include <boost/bind.hpp>
#include <boost/function.hpp>
#include <boost/version.hpp>
#if BOOST_VERSION >= 103800
#include <boost/spirit/include/classic_core.hpp>
#include <boost/spirit/include/classic_confix.hpp>
#include <boost/spirit/include/classic_escape_char.hpp>
#include <boost/spirit/include/classic_multi_pass.hpp>
#include <boost/spirit/include/classic_position_iterator.hpp>
#define spirit_namespace boost::spirit::classic
#else
#include <boost/spirit/core.hpp>
#include <boost/spirit/utility/confix.hpp>
#include <boost/spirit/utility/escape_char.hpp>
#include <boost/spirit/iterator/multi_pass.hpp>
#include <boost/spirit/iterator/position_iterator.hpp>
#define spirit_namespace boost::spirit
#endif
namespace json_spirit
{
const spirit_namespace::int_parser < boost::int64_t > int64_p = spirit_namespace::int_parser < boost::int64_t >();
const spirit_namespace::uint_parser< boost::uint64_t > uint64_p = spirit_namespace::uint_parser< boost::uint64_t >();
template< class Iter_type >
bool is_eq( Iter_type first, Iter_type last, const char* c_str )
{
for( Iter_type i = first; i != last; ++i, ++c_str )
{
if( *c_str == 0 ) return false;
if( *i != *c_str ) return false;
}
return true;
}
template< class Char_type >
Char_type hex_to_num( const Char_type c )
{
if( ( c >= '0' ) && ( c <= '9' ) ) return c - '0';
if( ( c >= 'a' ) && ( c <= 'f' ) ) return c - 'a' + 10;
if( ( c >= 'A' ) && ( c <= 'F' ) ) return c - 'A' + 10;
return 0;
}
template< class Char_type, class Iter_type >
Char_type hex_str_to_char( Iter_type& begin )
{
const Char_type c1( *( ++begin ) );
const Char_type c2( *( ++begin ) );
return ( hex_to_num( c1 ) << 4 ) + hex_to_num( c2 );
}
template< class Char_type, class Iter_type >
Char_type unicode_str_to_char( Iter_type& begin )
{
const Char_type c1( *( ++begin ) );
const Char_type c2( *( ++begin ) );
const Char_type c3( *( ++begin ) );
const Char_type c4( *( ++begin ) );
return ( hex_to_num( c1 ) << 12 ) +
( hex_to_num( c2 ) << 8 ) +
( hex_to_num( c3 ) << 4 ) +
hex_to_num( c4 );
}
template< class String_type >
void append_esc_char_and_incr_iter( String_type& s,
typename String_type::const_iterator& begin,
typename String_type::const_iterator end )
{
typedef typename String_type::value_type Char_type;
const Char_type c2( *begin );
switch( c2 )
{
case 't': s += '\t'; break;
case 'b': s += '\b'; break;
case 'f': s += '\f'; break;
case 'n': s += '\n'; break;
case 'r': s += '\r'; break;
case '\\': s += '\\'; break;
case '/': s += '/'; break;
case '"': s += '"'; break;
case 'x':
{
if( end - begin >= 3 ) // expecting "xHH..."
{
s += hex_str_to_char< Char_type >( begin );
}
break;
}
case 'u':
{
if( end - begin >= 5 ) // expecting "uHHHH..."
{
s += unicode_str_to_char< Char_type >( begin );
}
break;
}
}
}
template< class String_type >
String_type substitute_esc_chars( typename String_type::const_iterator begin,
typename String_type::const_iterator end )
{
typedef typename String_type::const_iterator Iter_type;
if( end - begin < 2 ) return String_type( begin, end );
String_type result;
result.reserve( end - begin );
const Iter_type end_minus_1( end - 1 );
Iter_type substr_start = begin;
Iter_type i = begin;
for( ; i < end_minus_1; ++i )
{
if( *i == '\\' )
{
result.append( substr_start, i );
++i; // skip the '\'
append_esc_char_and_incr_iter( result, i, end );
substr_start = i + 1;
}
}
result.append( substr_start, end );
return result;
}
template< class String_type >
String_type get_str_( typename String_type::const_iterator begin,
typename String_type::const_iterator end )
{
assert( end - begin >= 2 );
typedef typename String_type::const_iterator Iter_type;
Iter_type str_without_quotes( ++begin );
Iter_type end_without_quotes( --end );
return substitute_esc_chars< String_type >( str_without_quotes, end_without_quotes );
}
inline std::string get_str( std::string::const_iterator begin, std::string::const_iterator end )
{
return get_str_< std::string >( begin, end );
}
inline std::wstring get_str( std::wstring::const_iterator begin, std::wstring::const_iterator end )
{
return get_str_< std::wstring >( begin, end );
}
template< class String_type, class Iter_type >
String_type get_str( Iter_type begin, Iter_type end )
{
const String_type tmp( begin, end ); // convert multipass iterators to string iterators
return get_str( tmp.begin(), tmp.end() );
}
// this class's methods get called by the spirit parse resulting
// in the creation of a JSON object or array
//
// NB Iter_type could be a std::string iterator, wstring iterator, a position iterator or a multipass iterator
//
template< class Value_type, class Iter_type >
class Semantic_actions
{
public:
typedef typename Value_type::Config_type Config_type;
typedef typename Config_type::String_type String_type;
typedef typename Config_type::Object_type Object_type;
typedef typename Config_type::Array_type Array_type;
typedef typename String_type::value_type Char_type;
Semantic_actions( Value_type& value )
: value_( value )
, current_p_( 0 )
{
}
void begin_obj( Char_type c )
{
assert( c == '{' );
begin_compound< Object_type >();
}
void end_obj( Char_type c )
{
assert( c == '}' );
end_compound();
}
void begin_array( Char_type c )
{
assert( c == '[' );
begin_compound< Array_type >();
}
void end_array( Char_type c )
{
assert( c == ']' );
end_compound();
}
void new_name( Iter_type begin, Iter_type end )
{
assert( current_p_->type() == obj_type );
name_ = get_str< String_type >( begin, end );
}
void new_str( Iter_type begin, Iter_type end )
{
add_to_current( get_str< String_type >( begin, end ) );
}
void new_true( Iter_type begin, Iter_type end )
{
assert( is_eq( begin, end, "true" ) );
add_to_current( true );
}
void new_false( Iter_type begin, Iter_type end )
{
assert( is_eq( begin, end, "false" ) );
add_to_current( false );
}
void new_null( Iter_type begin, Iter_type end )
{
assert( is_eq( begin, end, "null" ) );
add_to_current( Value_type() );
}
void new_int( boost::int64_t i )
{
add_to_current( i );
}
void new_uint64( boost::uint64_t ui )
{
add_to_current( ui );
}
void new_real( double d )
{
add_to_current( d );
}
private:
Semantic_actions& operator=( const Semantic_actions& );
// to prevent "assignment operator could not be generated" warning
Value_type* add_first( const Value_type& value )
{
assert( current_p_ == 0 );
value_ = value;
current_p_ = &value_;
return current_p_;
}
template< class Array_or_obj >
void begin_compound()
{
if( current_p_ == 0 )
{
add_first( Array_or_obj() );
}
else
{
stack_.push_back( current_p_ );
Array_or_obj new_array_or_obj; // avoid copy by building new array or object in place
current_p_ = add_to_current( new_array_or_obj );
}
}
void end_compound()
{
if( current_p_ != &value_ )
{
current_p_ = stack_.back();
stack_.pop_back();
}
}
Value_type* add_to_current( const Value_type& value )
{
if( current_p_ == 0 )
{
return add_first( value );
}
else if( current_p_->type() == array_type )
{
current_p_->get_array().push_back( value );
return &current_p_->get_array().back();
}
assert( current_p_->type() == obj_type );
return &Config_type::add( current_p_->get_obj(), name_, value );
}
Value_type& value_; // this is the object or array that is being created
Value_type* current_p_; // the child object or array that is currently being constructed
std::vector< Value_type* > stack_; // previous child objects and arrays
String_type name_; // of current name/value pair
};
template< typename Iter_type >
void throw_error( spirit_namespace::position_iterator< Iter_type > i, const std::string& reason )
{
throw Error_position( i.get_position().line, i.get_position().column, reason );
}
template< typename Iter_type >
void throw_error( Iter_type i, const std::string& reason )
{
throw reason;
}
// the spirit grammer
//
template< class Value_type, class Iter_type >
class Json_grammer : public spirit_namespace::grammar< Json_grammer< Value_type, Iter_type > >
{
public:
typedef Semantic_actions< Value_type, Iter_type > Semantic_actions_t;
Json_grammer( Semantic_actions_t& semantic_actions )
: actions_( semantic_actions )
{
}
static void throw_not_value( Iter_type begin, Iter_type end )
{
throw_error( begin, "not a value" );
}
static void throw_not_array( Iter_type begin, Iter_type end )
{
throw_error( begin, "not an array" );
}
static void throw_not_object( Iter_type begin, Iter_type end )
{
throw_error( begin, "not an object" );
}
static void throw_not_pair( Iter_type begin, Iter_type end )
{
throw_error( begin, "not a pair" );
}
static void throw_not_colon( Iter_type begin, Iter_type end )
{
throw_error( begin, "no colon in pair" );
}
static void throw_not_string( Iter_type begin, Iter_type end )
{
throw_error( begin, "not a string" );
}
template< typename ScannerT >
class definition
{
public:
definition( const Json_grammer& self )
{
using namespace spirit_namespace;
typedef typename Value_type::String_type::value_type Char_type;
// first we convert the semantic action class methods to functors with the
// parameter signature expected by spirit
typedef boost::function< void( Char_type ) > Char_action;
typedef boost::function< void( Iter_type, Iter_type ) > Str_action;
typedef boost::function< void( double ) > Real_action;
typedef boost::function< void( boost::int64_t ) > Int_action;
typedef boost::function< void( boost::uint64_t ) > Uint64_action;
Char_action begin_obj ( boost::bind( &Semantic_actions_t::begin_obj, &self.actions_, _1 ) );
Char_action end_obj ( boost::bind( &Semantic_actions_t::end_obj, &self.actions_, _1 ) );
Char_action begin_array( boost::bind( &Semantic_actions_t::begin_array, &self.actions_, _1 ) );
Char_action end_array ( boost::bind( &Semantic_actions_t::end_array, &self.actions_, _1 ) );
Str_action new_name ( boost::bind( &Semantic_actions_t::new_name, &self.actions_, _1, _2 ) );
Str_action new_str ( boost::bind( &Semantic_actions_t::new_str, &self.actions_, _1, _2 ) );
Str_action new_true ( boost::bind( &Semantic_actions_t::new_true, &self.actions_, _1, _2 ) );
Str_action new_false ( boost::bind( &Semantic_actions_t::new_false, &self.actions_, _1, _2 ) );
Str_action new_null ( boost::bind( &Semantic_actions_t::new_null, &self.actions_, _1, _2 ) );
Real_action new_real ( boost::bind( &Semantic_actions_t::new_real, &self.actions_, _1 ) );
Int_action new_int ( boost::bind( &Semantic_actions_t::new_int, &self.actions_, _1 ) );
Uint64_action new_uint64 ( boost::bind( &Semantic_actions_t::new_uint64, &self.actions_, _1 ) );
// actual grammer
json_
= value_ | eps_p[ &throw_not_value ]
;
value_
= string_[ new_str ]
| number_
| object_
| array_
| str_p( "true" ) [ new_true ]
| str_p( "false" )[ new_false ]
| str_p( "null" ) [ new_null ]
;
object_
= ch_p('{')[ begin_obj ]
>> !members_
>> ( ch_p('}')[ end_obj ] | eps_p[ &throw_not_object ] )
;
members_
= pair_ >> *( ',' >> pair_ )
;
pair_
= string_[ new_name ]
>> ( ':' | eps_p[ &throw_not_colon ] )
>> ( value_ | eps_p[ &throw_not_value ] )
;
array_
= ch_p('[')[ begin_array ]
>> !elements_
>> ( ch_p(']')[ end_array ] | eps_p[ &throw_not_array ] )
;
elements_
= value_ >> *( ',' >> value_ )
;
string_
= lexeme_d // this causes white space inside a string to be retained
[
confix_p
(
'"',
*lex_escape_ch_p,
'"'
)
]
;
number_
= strict_real_p[ new_real ]
| int64_p [ new_int ]
| uint64_p [ new_uint64 ]
;
}
spirit_namespace::rule< ScannerT > json_, object_, members_, pair_, array_, elements_, value_, string_, number_;
const spirit_namespace::rule< ScannerT >& start() const { return json_; }
};
private:
Json_grammer& operator=( const Json_grammer& ); // to prevent "assignment operator could not be generated" warning
Semantic_actions_t& actions_;
};
template< class Iter_type, class Value_type >
Iter_type read_range_or_throw( Iter_type begin, Iter_type end, Value_type& value )
{
Semantic_actions< Value_type, Iter_type > semantic_actions( value );
const spirit_namespace::parse_info< Iter_type > info =
spirit_namespace::parse( begin, end,
Json_grammer< Value_type, Iter_type >( semantic_actions ),
spirit_namespace::space_p );
if( !info.hit )
{
assert( false ); // in theory exception should already have been thrown
throw_error( info.stop, "error" );
}
return info.stop;
}
template< class Iter_type, class Value_type >
void add_posn_iter_and_read_range_or_throw( Iter_type begin, Iter_type end, Value_type& value )
{
typedef spirit_namespace::position_iterator< Iter_type > Posn_iter_t;
const Posn_iter_t posn_begin( begin, end );
const Posn_iter_t posn_end( end, end );
read_range_or_throw( posn_begin, posn_end, value );
}
template< class Iter_type, class Value_type >
bool read_range( Iter_type& begin, Iter_type end, Value_type& value )
{
try
{
begin = read_range_or_throw( begin, end, value );
return true;
}
catch( ... )
{
return false;
}
}
template< class String_type, class Value_type >
void read_string_or_throw( const String_type& s, Value_type& value )
{
add_posn_iter_and_read_range_or_throw( s.begin(), s.end(), value );
}
template< class String_type, class Value_type >
bool read_string( const String_type& s, Value_type& value )
{
typename String_type::const_iterator begin = s.begin();
return read_range( begin, s.end(), value );
}
template< class Istream_type >
struct Multi_pass_iters
{
typedef typename Istream_type::char_type Char_type;
typedef std::istream_iterator< Char_type, Char_type > istream_iter;
typedef spirit_namespace::multi_pass< istream_iter > Mp_iter;
Multi_pass_iters( Istream_type& is )
{
is.unsetf( std::ios::skipws );
begin_ = spirit_namespace::make_multi_pass( istream_iter( is ) );
end_ = spirit_namespace::make_multi_pass( istream_iter() );
}
Mp_iter begin_;
Mp_iter end_;
};
template< class Istream_type, class Value_type >
bool read_stream( Istream_type& is, Value_type& value )
{
Multi_pass_iters< Istream_type > mp_iters( is );
return read_range( mp_iters.begin_, mp_iters.end_, value );
}
template< class Istream_type, class Value_type >
void read_stream_or_throw( Istream_type& is, Value_type& value )
{
const Multi_pass_iters< Istream_type > mp_iters( is );
add_posn_iter_and_read_range_or_throw( mp_iters.begin_, mp_iters.end_, value );
}
}
#endif

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#ifndef JSON_SPIRIT_READ_STREAM
#define JSON_SPIRIT_READ_STREAM
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_reader_template.h"
namespace json_spirit
{
// these classes allows you to read multiple top level contiguous values from a stream,
// the normal stream read functions have a bug that prevent multiple top level values
// from being read unless they are separated by spaces
template< class Istream_type, class Value_type >
class Stream_reader
{
public:
Stream_reader( Istream_type& is )
: iters_( is )
{
}
bool read_next( Value_type& value )
{
return read_range( iters_.begin_, iters_.end_, value );
}
private:
typedef Multi_pass_iters< Istream_type > Mp_iters;
Mp_iters iters_;
};
template< class Istream_type, class Value_type >
class Stream_reader_thrower
{
public:
Stream_reader_thrower( Istream_type& is )
: iters_( is )
, posn_begin_( iters_.begin_, iters_.end_ )
, posn_end_( iters_.end_, iters_.end_ )
{
}
void read_next( Value_type& value )
{
posn_begin_ = read_range_or_throw( posn_begin_, posn_end_, value );
}
private:
typedef Multi_pass_iters< Istream_type > Mp_iters;
typedef spirit_namespace::position_iterator< typename Mp_iters::Mp_iter > Posn_iter_t;
Mp_iters iters_;
Posn_iter_t posn_begin_, posn_end_;
};
}
#endif

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#ifndef JSON_SPIRIT_UTILS
#define JSON_SPIRIT_UTILS
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_value.h"
#include <map>
namespace json_spirit
{
template< class Obj_t, class Map_t >
void obj_to_map( const Obj_t& obj, Map_t& mp_obj )
{
mp_obj.clear();
for( typename Obj_t::const_iterator i = obj.begin(); i != obj.end(); ++i )
{
mp_obj[ i->name_ ] = i->value_;
}
}
template< class Obj_t, class Map_t >
void map_to_obj( const Map_t& mp_obj, Obj_t& obj )
{
obj.clear();
for( typename Map_t::const_iterator i = mp_obj.begin(); i != mp_obj.end(); ++i )
{
obj.push_back( typename Obj_t::value_type( i->first, i->second ) );
}
}
typedef std::map< std::string, Value > Mapped_obj;
#ifndef BOOST_NO_STD_WSTRING
typedef std::map< std::wstring, wValue > wMapped_obj;
#endif
template< class Object_type, class String_type >
const typename Object_type::value_type::Value_type& find_value( const Object_type& obj, const String_type& name )
{
for( typename Object_type::const_iterator i = obj.begin(); i != obj.end(); ++i )
{
if( i->name_ == name )
{
return i->value_;
}
}
return Object_type::value_type::Value_type::null;
}
}
#endif

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/* Copyright (c) 2007 John W Wilkinson
This source code can be used for any purpose as long as
this comment is retained. */
// json spirit version 2.00
#include "json_spirit_value.h"

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#ifndef JSON_SPIRIT_VALUE
#define JSON_SPIRIT_VALUE
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include <vector>
#include <map>
#include <string>
#include <cassert>
#include <sstream>
#include <stdexcept>
#include <boost/config.hpp>
#include <boost/cstdint.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/variant.hpp>
namespace json_spirit
{
enum Value_type{ obj_type, array_type, str_type, bool_type, int_type, real_type, null_type };
template< class Config > // Config determines whether the value uses std::string or std::wstring and
// whether JSON Objects are represented as vectors or maps
class Value_impl
{
public:
typedef Config Config_type;
typedef typename Config::String_type String_type;
typedef typename Config::Object_type Object;
typedef typename Config::Array_type Array;
typedef typename String_type::const_pointer Const_str_ptr; // eg const char*
Value_impl(); // creates null value
Value_impl( Const_str_ptr value );
Value_impl( const String_type& value );
Value_impl( const Object& value );
Value_impl( const Array& value );
Value_impl( bool value );
Value_impl( int value );
Value_impl( boost::int64_t value );
Value_impl( boost::uint64_t value );
Value_impl( double value );
Value_impl( const Value_impl& other );
bool operator==( const Value_impl& lhs ) const;
Value_impl& operator=( const Value_impl& lhs );
Value_type type() const;
bool is_uint64() const;
bool is_null() const;
const String_type& get_str() const;
const Object& get_obj() const;
const Array& get_array() const;
bool get_bool() const;
int get_int() const;
boost::int64_t get_int64() const;
boost::uint64_t get_uint64() const;
double get_real() const;
Object& get_obj();
Array& get_array();
template< typename T > T get_value() const; // example usage: int i = value.get_value< int >();
// or double d = value.get_value< double >();
static const Value_impl null;
private:
void check_type( const Value_type vtype ) const;
typedef boost::variant< String_type,
boost::recursive_wrapper< Object >, boost::recursive_wrapper< Array >,
bool, boost::int64_t, double > Variant;
Value_type type_;
Variant v_;
bool is_uint64_;
};
// vector objects
template< class Config >
struct Pair_impl
{
typedef typename Config::String_type String_type;
typedef typename Config::Value_type Value_type;
Pair_impl( const String_type& name, const Value_type& value );
bool operator==( const Pair_impl& lhs ) const;
String_type name_;
Value_type value_;
};
template< class String >
struct Config_vector
{
typedef String String_type;
typedef Value_impl< Config_vector > Value_type;
typedef Pair_impl < Config_vector > Pair_type;
typedef std::vector< Value_type > Array_type;
typedef std::vector< Pair_type > Object_type;
static Value_type& add( Object_type& obj, const String_type& name, const Value_type& value )
{
obj.push_back( Pair_type( name , value ) );
return obj.back().value_;
}
static String_type get_name( const Pair_type& pair )
{
return pair.name_;
}
static Value_type get_value( const Pair_type& pair )
{
return pair.value_;
}
};
// typedefs for ASCII
typedef Config_vector< std::string > Config;
typedef Config::Value_type Value;
typedef Config::Pair_type Pair;
typedef Config::Object_type Object;
typedef Config::Array_type Array;
// typedefs for Unicode
#ifndef BOOST_NO_STD_WSTRING
typedef Config_vector< std::wstring > wConfig;
typedef wConfig::Value_type wValue;
typedef wConfig::Pair_type wPair;
typedef wConfig::Object_type wObject;
typedef wConfig::Array_type wArray;
#endif
// map objects
template< class String >
struct Config_map
{
typedef String String_type;
typedef Value_impl< Config_map > Value_type;
typedef std::vector< Value_type > Array_type;
typedef std::map< String_type, Value_type > Object_type;
typedef typename Object_type::value_type Pair_type;
static Value_type& add( Object_type& obj, const String_type& name, const Value_type& value )
{
return obj[ name ] = value;
}
static String_type get_name( const Pair_type& pair )
{
return pair.first;
}
static Value_type get_value( const Pair_type& pair )
{
return pair.second;
}
};
// typedefs for ASCII
typedef Config_map< std::string > mConfig;
typedef mConfig::Value_type mValue;
typedef mConfig::Object_type mObject;
typedef mConfig::Array_type mArray;
// typedefs for Unicode
#ifndef BOOST_NO_STD_WSTRING
typedef Config_map< std::wstring > wmConfig;
typedef wmConfig::Value_type wmValue;
typedef wmConfig::Object_type wmObject;
typedef wmConfig::Array_type wmArray;
#endif
///////////////////////////////////////////////////////////////////////////////////////////////
//
// implementation
template< class Config >
const Value_impl< Config > Value_impl< Config >::null;
template< class Config >
Value_impl< Config >::Value_impl()
: type_( null_type )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const Const_str_ptr value )
: type_( str_type )
, v_( String_type( value ) )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const String_type& value )
: type_( str_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const Object& value )
: type_( obj_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const Array& value )
: type_( array_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( bool value )
: type_( bool_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( int value )
: type_( int_type )
, v_( static_cast< boost::int64_t >( value ) )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( boost::int64_t value )
: type_( int_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( boost::uint64_t value )
: type_( int_type )
, v_( static_cast< boost::int64_t >( value ) )
, is_uint64_( true )
{
}
template< class Config >
Value_impl< Config >::Value_impl( double value )
: type_( real_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const Value_impl< Config >& other )
: type_( other.type() )
, v_( other.v_ )
, is_uint64_( other.is_uint64_ )
{
}
template< class Config >
Value_impl< Config >& Value_impl< Config >::operator=( const Value_impl& lhs )
{
Value_impl tmp( lhs );
std::swap( type_, tmp.type_ );
std::swap( v_, tmp.v_ );
std::swap( is_uint64_, tmp.is_uint64_ );
return *this;
}
template< class Config >
bool Value_impl< Config >::operator==( const Value_impl& lhs ) const
{
if( this == &lhs ) return true;
if( type() != lhs.type() ) return false;
return v_ == lhs.v_;
}
template< class Config >
Value_type Value_impl< Config >::type() const
{
return type_;
}
template< class Config >
bool Value_impl< Config >::is_uint64() const
{
return is_uint64_;
}
template< class Config >
bool Value_impl< Config >::is_null() const
{
return type() == null_type;
}
template< class Config >
void Value_impl< Config >::check_type( const Value_type vtype ) const
{
if( type() != vtype )
{
std::ostringstream os;
os << "value type is " << type() << " not " << vtype;
throw std::runtime_error( os.str() );
}
}
template< class Config >
const typename Config::String_type& Value_impl< Config >::get_str() const
{
check_type( str_type );
return *boost::get< String_type >( &v_ );
}
template< class Config >
const typename Value_impl< Config >::Object& Value_impl< Config >::get_obj() const
{
check_type( obj_type );
return *boost::get< Object >( &v_ );
}
template< class Config >
const typename Value_impl< Config >::Array& Value_impl< Config >::get_array() const
{
check_type( array_type );
return *boost::get< Array >( &v_ );
}
template< class Config >
bool Value_impl< Config >::get_bool() const
{
check_type( bool_type );
return boost::get< bool >( v_ );
}
template< class Config >
int Value_impl< Config >::get_int() const
{
check_type( int_type );
return static_cast< int >( get_int64() );
}
template< class Config >
boost::int64_t Value_impl< Config >::get_int64() const
{
check_type( int_type );
return boost::get< boost::int64_t >( v_ );
}
template< class Config >
boost::uint64_t Value_impl< Config >::get_uint64() const
{
check_type( int_type );
return static_cast< boost::uint64_t >( get_int64() );
}
template< class Config >
double Value_impl< Config >::get_real() const
{
if( type() == int_type )
{
return is_uint64() ? static_cast< double >( get_uint64() )
: static_cast< double >( get_int64() );
}
check_type( real_type );
return boost::get< double >( v_ );
}
template< class Config >
typename Value_impl< Config >::Object& Value_impl< Config >::get_obj()
{
check_type( obj_type );
return *boost::get< Object >( &v_ );
}
template< class Config >
typename Value_impl< Config >::Array& Value_impl< Config >::get_array()
{
check_type( array_type );
return *boost::get< Array >( &v_ );
}
template< class Config >
Pair_impl< Config >::Pair_impl( const String_type& name, const Value_type& value )
: name_( name )
, value_( value )
{
}
template< class Config >
bool Pair_impl< Config >::operator==( const Pair_impl< Config >& lhs ) const
{
if( this == &lhs ) return true;
return ( name_ == lhs.name_ ) && ( value_ == lhs.value_ );
}
// converts a C string, ie. 8 bit char array, to a string object
//
template < class String_type >
String_type to_str( const char* c_str )
{
String_type result;
for( const char* p = c_str; *p != 0; ++p )
{
result += *p;
}
return result;
}
//
namespace internal_
{
template< typename T >
struct Type_to_type
{
};
template< class Value >
int get_value( const Value& value, Type_to_type< int > )
{
return value.get_int();
}
template< class Value >
boost::int64_t get_value( const Value& value, Type_to_type< boost::int64_t > )
{
return value.get_int64();
}
template< class Value >
boost::uint64_t get_value( const Value& value, Type_to_type< boost::uint64_t > )
{
return value.get_uint64();
}
template< class Value >
double get_value( const Value& value, Type_to_type< double > )
{
return value.get_real();
}
template< class Value >
typename Value::String_type get_value( const Value& value, Type_to_type< typename Value::String_type > )
{
return value.get_str();
}
template< class Value >
typename Value::Array get_value( const Value& value, Type_to_type< typename Value::Array > )
{
return value.get_array();
}
template< class Value >
typename Value::Object get_value( const Value& value, Type_to_type< typename Value::Object > )
{
return value.get_obj();
}
template< class Value >
bool get_value( const Value& value, Type_to_type< bool > )
{
return value.get_bool();
}
}
template< class Config >
template< typename T >
T Value_impl< Config >::get_value() const
{
return internal_::get_value( *this, internal_::Type_to_type< T >() );
}
}
#endif

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// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#include "json_spirit_writer.h"
#include "json_spirit_writer_template.h"
void json_spirit::write( const Value& value, std::ostream& os )
{
write_stream( value, os, false );
}
void json_spirit::write_formatted( const Value& value, std::ostream& os )
{
write_stream( value, os, true );
}
std::string json_spirit::write( const Value& value )
{
return write_string( value, false );
}
std::string json_spirit::write_formatted( const Value& value )
{
return write_string( value, true );
}
#ifndef BOOST_NO_STD_WSTRING
void json_spirit::write( const wValue& value, std::wostream& os )
{
write_stream( value, os, false );
}
void json_spirit::write_formatted( const wValue& value, std::wostream& os )
{
write_stream( value, os, true );
}
std::wstring json_spirit::write( const wValue& value )
{
return write_string( value, false );
}
std::wstring json_spirit::write_formatted( const wValue& value )
{
return write_string( value, true );
}
#endif
void json_spirit::write( const mValue& value, std::ostream& os )
{
write_stream( value, os, false );
}
void json_spirit::write_formatted( const mValue& value, std::ostream& os )
{
write_stream( value, os, true );
}
std::string json_spirit::write( const mValue& value )
{
return write_string( value, false );
}
std::string json_spirit::write_formatted( const mValue& value )
{
return write_string( value, true );
}
#ifndef BOOST_NO_STD_WSTRING
void json_spirit::write( const wmValue& value, std::wostream& os )
{
write_stream( value, os, false );
}
void json_spirit::write_formatted( const wmValue& value, std::wostream& os )
{
write_stream( value, os, true );
}
std::wstring json_spirit::write( const wmValue& value )
{
return write_string( value, false );
}
std::wstring json_spirit::write_formatted( const wmValue& value )
{
return write_string( value, true );
}
#endif

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#ifndef JSON_SPIRIT_WRITER
#define JSON_SPIRIT_WRITER
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_value.h"
#include <iostream>
namespace json_spirit
{
// functions to convert JSON Values to text,
// the "formatted" versions add whitespace to format the output nicely
void write ( const Value& value, std::ostream& os );
void write_formatted( const Value& value, std::ostream& os );
std::string write ( const Value& value );
std::string write_formatted( const Value& value );
#ifndef BOOST_NO_STD_WSTRING
void write ( const wValue& value, std::wostream& os );
void write_formatted( const wValue& value, std::wostream& os );
std::wstring write ( const wValue& value );
std::wstring write_formatted( const wValue& value );
#endif
void write ( const mValue& value, std::ostream& os );
void write_formatted( const mValue& value, std::ostream& os );
std::string write ( const mValue& value );
std::string write_formatted( const mValue& value );
#ifndef BOOST_NO_STD_WSTRING
void write ( const wmValue& value, std::wostream& os );
void write_formatted( const wmValue& value, std::wostream& os );
std::wstring write ( const wmValue& value );
std::wstring write_formatted( const wmValue& value );
#endif
}
#endif

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json_spirit/json_spirit_writer_template.h
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#ifndef JSON_SPIRIT_WRITER_TEMPLATE
#define JSON_SPIRIT_WRITER_TEMPLATE
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#include "json_spirit_value.h"
#include <cassert>
#include <sstream>
#include <iomanip>
namespace json_spirit
{
inline char to_hex_char( unsigned int c )
{
assert( c <= 0xF );
const char ch = static_cast< char >( c );
if( ch < 10 ) return '0' + ch;
return 'A' - 10 + ch;
}
template< class String_type >
String_type non_printable_to_string( unsigned int c )
{
typedef typename String_type::value_type Char_type;
String_type result( 6, '\\' );
result[1] = 'u';
result[ 5 ] = to_hex_char( c & 0x000F ); c >>= 4;
result[ 4 ] = to_hex_char( c & 0x000F ); c >>= 4;
result[ 3 ] = to_hex_char( c & 0x000F ); c >>= 4;
result[ 2 ] = to_hex_char( c & 0x000F );
return result;
}
template< typename Char_type, class String_type >
bool add_esc_char( Char_type c, String_type& s )
{
switch( c )
{
case '"': s += to_str< String_type >( "\\\"" ); return true;
case '\\': s += to_str< String_type >( "\\\\" ); return true;
case '\b': s += to_str< String_type >( "\\b" ); return true;
case '\f': s += to_str< String_type >( "\\f" ); return true;
case '\n': s += to_str< String_type >( "\\n" ); return true;
case '\r': s += to_str< String_type >( "\\r" ); return true;
case '\t': s += to_str< String_type >( "\\t" ); return true;
}
return false;
}
template< class String_type >
String_type add_esc_chars( const String_type& s )
{
typedef typename String_type::const_iterator Iter_type;
typedef typename String_type::value_type Char_type;
String_type result;
const Iter_type end( s.end() );
for( Iter_type i = s.begin(); i != end; ++i )
{
const Char_type c( *i );
if( add_esc_char( c, result ) ) continue;
const wint_t unsigned_c( ( c >= 0 ) ? c : 256 + c );
if( iswprint( unsigned_c ) )
{
result += c;
}
else
{
result += non_printable_to_string< String_type >( unsigned_c );
}
}
return result;
}
// this class generates the JSON text,
// it keeps track of the indentation level etc.
//
template< class Value_type, class Ostream_type >
class Generator
{
typedef typename Value_type::Config_type Config_type;
typedef typename Config_type::String_type String_type;
typedef typename Config_type::Object_type Object_type;
typedef typename Config_type::Array_type Array_type;
typedef typename String_type::value_type Char_type;
typedef typename Object_type::value_type Obj_member_type;
public:
Generator( const Value_type& value, Ostream_type& os, bool pretty )
: os_( os )
, indentation_level_( 0 )
, pretty_( pretty )
{
output( value );
}
private:
void output( const Value_type& value )
{
switch( value.type() )
{
case obj_type: output( value.get_obj() ); break;
case array_type: output( value.get_array() ); break;
case str_type: output( value.get_str() ); break;
case bool_type: output( value.get_bool() ); break;
case int_type: output_int( value ); break;
case real_type: os_ << std::showpoint << std::setprecision( 16 )
<< value.get_real(); break;
case null_type: os_ << "null"; break;
default: assert( false );
}
}
void output( const Object_type& obj )
{
output_array_or_obj( obj, '{', '}' );
}
void output( const Array_type& arr )
{
output_array_or_obj( arr, '[', ']' );
}
void output( const Obj_member_type& member )
{
output( Config_type::get_name( member ) ); space();
os_ << ':'; space();
output( Config_type::get_value( member ) );
}
void output_int( const Value_type& value )
{
if( value.is_uint64() )
{
os_ << value.get_uint64();
}
else
{
os_ << value.get_int64();
}
}
void output( const String_type& s )
{
os_ << '"' << add_esc_chars( s ) << '"';
}
void output( bool b )
{
os_ << to_str< String_type >( b ? "true" : "false" );
}
template< class T >
void output_array_or_obj( const T& t, Char_type start_char, Char_type end_char )
{
os_ << start_char; new_line();
++indentation_level_;
for( typename T::const_iterator i = t.begin(); i != t.end(); ++i )
{
indent(); output( *i );
typename T::const_iterator next = i;
if( ++next != t.end())
{
os_ << ',';
}
new_line();
}
--indentation_level_;
indent(); os_ << end_char;
}
void indent()
{
if( !pretty_ ) return;
for( int i = 0; i < indentation_level_; ++i )
{
os_ << " ";
}
}
void space()
{
if( pretty_ ) os_ << ' ';
}
void new_line()
{
if( pretty_ ) os_ << '\n';
}
Generator& operator=( const Generator& ); // to prevent "assignment operator could not be generated" warning
Ostream_type& os_;
int indentation_level_;
bool pretty_;
};
template< class Value_type, class Ostream_type >
void write_stream( const Value_type& value, Ostream_type& os, bool pretty )
{
Generator< Value_type, Ostream_type >( value, os, pretty );
}
template< class Value_type >
typename Value_type::String_type write_string( const Value_type& value, bool pretty )
{
typedef typename Value_type::String_type::value_type Char_type;
std::basic_ostringstream< Char_type > os;
write_stream( value, os, pretty );
return os.str();
}
}
#endif
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