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Diffstat (limited to 'src/json_spirit/json_spirit_value.h')
| -rw-r--r-- | src/json_spirit/json_spirit_value.h | 584 |
1 files changed, 584 insertions, 0 deletions
diff --git a/src/json_spirit/json_spirit_value.h b/src/json_spirit/json_spirit_value.h new file mode 100644 index 00000000..a4126369 --- /dev/null +++ b/src/json_spirit/json_spirit_value.h @@ -0,0 +1,584 @@ +#ifndef JSON_SPIRIT_VALUE
+#define JSON_SPIRIT_VALUE
+
+// Copyright John W. Wilkinson 2007 - 2011
+// Distributed under the MIT License, see accompanying file LICENSE.txt
+
+// json spirit version 4.05
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <vector>
+#include <map>
+#include <string>
+#include <sstream>
+#include <stdexcept>
+#include <boost/config.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/variant.hpp>
+
+// comment out the value types you don't need to reduce build times and intermediate file sizes
+#define JSON_SPIRIT_VALUE_ENABLED
+//#define JSON_SPIRIT_WVALUE_ENABLED
+#define JSON_SPIRIT_MVALUE_ENABLED
+//#define JSON_SPIRIT_WMVALUE_ENABLED
+
+namespace json_spirit
+{
+ enum Value_type{ obj_type, array_type, str_type, bool_type, int_type, real_type, null_type };
+
+ struct Null{};
+
+ 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 );
+
+ template< class Iter >
+ Value_impl( Iter first, Iter last ); // constructor from containers, e.g. std::vector or std::list
+
+ template< BOOST_VARIANT_ENUM_PARAMS( typename T ) >
+ Value_impl( const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& variant ); // constructor for compatible variant types
+
+ 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< boost::recursive_wrapper< Object >, boost::recursive_wrapper< Array >,
+ String_type, bool, boost::int64_t, double, Null, boost::uint64_t > Variant;
+
+ Variant v_;
+
+ class Variant_converter_visitor : public boost::static_visitor< Variant >
+ {
+ public:
+
+ template< typename T, typename A, template< typename, typename > class Cont >
+ Variant operator()( const Cont< T, A >& cont ) const
+ {
+ return Array( cont.begin(), cont.end() );
+ }
+
+ Variant operator()( int i ) const
+ {
+ return static_cast< boost::int64_t >( i );
+ }
+
+ template<class T>
+ Variant operator()( const T& t ) const
+ {
+ return t;
+ }
+ };
+ };
+
+ // vector objects
+
+ template< class Config >
+ struct Pair_impl
+ {
+ typedef typename Config::String_type String_type;
+ typedef typename Config::Value_type Value_type;
+
+ Pair_impl()
+ {
+ }
+
+ Pair_impl( const String_type& name, const Value_type& value );
+
+ bool operator==( const Pair_impl& lhs ) const;
+
+ String_type name_;
+ Value_type value_;
+ };
+
+#if defined( JSON_SPIRIT_VALUE_ENABLED ) || defined( JSON_SPIRIT_WVALUE_ENABLED )
+ 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_;
+ }
+ };
+#endif
+
+ // typedefs for ASCII
+
+#ifdef JSON_SPIRIT_VALUE_ENABLED
+ 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;
+#endif
+
+ // typedefs for Unicode
+
+#if defined( JSON_SPIRIT_WVALUE_ENABLED ) && !defined( 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
+
+#if defined( JSON_SPIRIT_MVALUE_ENABLED ) || defined( JSON_SPIRIT_WMVALUE_ENABLED )
+ 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 std::pair< String_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;
+ }
+ };
+#endif
+
+ // typedefs for ASCII
+
+#ifdef JSON_SPIRIT_MVALUE_ENABLED
+ typedef Config_map< std::string > mConfig;
+
+ typedef mConfig::Value_type mValue;
+ typedef mConfig::Object_type mObject;
+ typedef mConfig::Array_type mArray;
+#endif
+
+ // typedefs for Unicode
+
+#if defined( JSON_SPIRIT_WMVALUE_ENABLED ) && !defined( 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
+
+ inline bool operator==( const Null&, const Null& )
+ {
+ return true;
+ }
+
+ template< class Config >
+ const Value_impl< Config > Value_impl< Config >::null;
+
+ template< class Config >
+ Value_impl< Config >::Value_impl()
+ : v_( Null() )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( const Const_str_ptr value )
+ : v_( String_type( value ) )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( const String_type& value )
+ : v_( value )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( const Object& value )
+ : v_( value )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( const Array& value )
+ : v_( value )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( bool value )
+ : v_( value )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( int value )
+ : v_( static_cast< boost::int64_t >( value ) )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( boost::int64_t value )
+ : v_( value )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( boost::uint64_t value )
+ : v_( value )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( double value )
+ : v_( value )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >::Value_impl( const Value_impl< Config >& other )
+ : v_( other.v_ )
+ {
+ }
+
+ template< class Config >
+ template< class Iter >
+ Value_impl< Config >::Value_impl( Iter first, Iter last )
+ : v_( Array( first, last ) )
+ {
+ }
+
+ template< class Config >
+ template< BOOST_VARIANT_ENUM_PARAMS( typename T ) >
+ Value_impl< Config >::Value_impl( const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& variant )
+ : v_( boost::apply_visitor( Variant_converter_visitor(), variant) )
+ {
+ }
+
+ template< class Config >
+ Value_impl< Config >& Value_impl< Config >::operator=( const Value_impl& lhs )
+ {
+ Value_impl tmp( lhs );
+
+ std::swap( v_, tmp.v_ );
+
+ 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
+ {
+ if( is_uint64() )
+ {
+ return int_type;
+ }
+
+ return static_cast< Value_type >( v_.which() );
+ }
+
+ template< class Config >
+ bool Value_impl< Config >::is_uint64() const
+ {
+ return v_.which() == null_type + 1;
+ }
+
+ 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 );
+
+ if( is_uint64() )
+ {
+ return static_cast< boost::int64_t >( get_uint64() );
+ }
+
+ return boost::get< boost::int64_t >( v_ );
+ }
+
+ template< class Config >
+ boost::uint64_t Value_impl< Config >::get_uint64() const
+ {
+ check_type( int_type );
+
+ if( !is_uint64() )
+ {
+ return static_cast< boost::uint64_t >( get_int64() );
+ }
+
+ return boost::get< boost::uint64_t >( v_ );
+ }
+
+ 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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