90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
// Copyright (c) 2014-2015 Dr. Colin Hirsch and Daniel Frey
|
|
// Please see LICENSE for license or visit https://github.com/ColinH/PEGTL/
|
|
|
|
#ifndef TAO_CPP_PEGTL_CONTRIB_JSON_HH
|
|
#define TAO_CPP_PEGTL_CONTRIB_JSON_HH
|
|
|
|
#include "../rules.hh"
|
|
#include "../ascii.hh"
|
|
#include "../utf8.hh"
|
|
#include "abnf.hh"
|
|
|
|
namespace tao_json_pegtl
|
|
{
|
|
namespace json
|
|
{
|
|
// JSON grammar according to RFC 7159 (for UTF-8 encoded JSON only).
|
|
|
|
struct ws : one< ' ', '\t', '\n', '\r' > {};
|
|
|
|
template< typename R, typename P = ws > struct padr : internal::seq< R, internal::star< P > > {};
|
|
|
|
struct begin_array : padr< one< '[' > > {};
|
|
struct begin_object : padr< one< '{' > > {};
|
|
struct end_array : one< ']' > {};
|
|
struct end_object : one< '}' > {};
|
|
struct name_separator : pad< one< ':' >, ws > {};
|
|
struct value_separator : padr< one< ',' > > {};
|
|
|
|
struct false_ : pegtl_string_t( "false" ) {};
|
|
struct null : pegtl_string_t( "null" ) {};
|
|
struct true_ : pegtl_string_t( "true" ) {};
|
|
|
|
struct digits : plus< abnf::DIGIT > {};
|
|
struct exp : seq< one< 'e', 'E' >, opt< one< '-', '+'> >, must< digits > > {};
|
|
struct frac : if_must< one< '.' >, digits > {};
|
|
struct int_ : sor< one< '0' >, digits > {};
|
|
struct number : seq< opt< one< '-' > >, int_, opt< frac >, opt< exp > > {};
|
|
|
|
struct xdigit : abnf::HEXDIG {};
|
|
struct unicode : list< seq< one< 'u' >, rep< 4, must< xdigit > > >, one< '\\' > > {};
|
|
struct escaped_char : one< '"', '\\', '/', 'b', 'f', 'n', 'r', 't' > {};
|
|
struct escaped : sor< escaped_char, unicode > {};
|
|
struct unescaped : utf8::range< 0x20, 0x10FFFF > {};
|
|
struct char_ : if_then_else< one< '\\' >, must< escaped >, unescaped > {};
|
|
|
|
struct string_content : until< at< one< '"' > >, must< char_ > > {};
|
|
struct string : seq< one< '"' >, must< string_content >, any >
|
|
{
|
|
using content = string_content;
|
|
};
|
|
|
|
struct key_content : until< at< one< '"' > >, must< char_ > > {};
|
|
struct key : seq< one< '"' >, must< key_content >, any >
|
|
{
|
|
using content = key_content;
|
|
};
|
|
|
|
struct value;
|
|
|
|
struct array_element;
|
|
struct array_content : opt< list_must< array_element, value_separator > > {};
|
|
struct array : seq< begin_array, array_content, must< end_array > >
|
|
{
|
|
using begin = begin_array;
|
|
using end = end_array;
|
|
using element = array_element;
|
|
using content = array_content;
|
|
};
|
|
|
|
struct member : if_must< key, name_separator, value > {};
|
|
struct object_content : opt< list_must< member, value_separator > > {};
|
|
struct object : seq< begin_object, object_content, must< end_object > >
|
|
{
|
|
using begin = begin_object;
|
|
using end = end_object;
|
|
using element = member;
|
|
using content = object_content;
|
|
};
|
|
|
|
struct value : padr< sor< string, number, object, array, false_, true_, null > > {};
|
|
struct array_element : seq< value > {};
|
|
|
|
struct text : seq< star< ws >, value > {};
|
|
|
|
} // namespace json
|
|
|
|
} // namespace tao_json_pegtl
|
|
|
|
#endif
|