92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
// Copyright (c) 2015-2016 Dr. Colin Hirsch and Daniel Frey
|
|
// Please see LICENSE for license or visit https://github.com/ColinH/PEGTL/
|
|
|
|
#ifndef TAO_CPP_PEGTL_INTERNAL_TAO_CPP_PEGTL_STRING_HH
|
|
#define TAO_CPP_PEGTL_INTERNAL_TAO_CPP_PEGTL_STRING_HH
|
|
|
|
#include <type_traits>
|
|
#include <cstddef>
|
|
|
|
#include "../ascii.hh"
|
|
|
|
namespace tao_json_pegtl
|
|
{
|
|
// Inspired by https://github.com/irrequietus/typestring
|
|
// Rewritten and reduced to what is needed for the PEGTL
|
|
// and to work with Visual Studio 2015.
|
|
|
|
namespace internal
|
|
{
|
|
template< typename, typename, typename, typename, typename, typename, typename, typename >
|
|
struct string_join;
|
|
|
|
template< template< char ... > class S, char ... C0s, char ... C1s, char ... C2s, char ... C3s, char ... C4s, char ... C5s, char ... C6s, char ... C7s >
|
|
struct string_join< S< C0s ... >, S< C1s ... >, S< C2s ... >, S< C3s ... >, S< C4s ... >, S< C5s ... >, S< C6s ... >, S< C7s ... > >
|
|
{
|
|
using type = S< C0s ..., C1s ..., C2s ..., C3s ..., C4s ..., C5s ..., C6s ..., C7s ... >;
|
|
};
|
|
|
|
template< template< char ... > class S, char, bool >
|
|
struct string_at
|
|
{
|
|
using type = S<>;
|
|
};
|
|
|
|
template< template< char ... > class S, char C >
|
|
struct string_at< S, C, true >
|
|
{
|
|
using type = S< C >;
|
|
};
|
|
|
|
template< typename T, std::size_t S >
|
|
struct string_max_length
|
|
{
|
|
static_assert( S <= 512, "String longer than 512 (excluding terminating \\0)!" );
|
|
using type = T;
|
|
};
|
|
|
|
} // namespace internal
|
|
|
|
} // namespace tao_json_pegtl
|
|
|
|
#define TAO_CPP_PEGTL_INTERNAL_EMPTY()
|
|
#define TAO_CPP_PEGTL_INTERNAL_DEFER( X ) X TAO_CPP_PEGTL_INTERNAL_EMPTY()
|
|
#define TAO_CPP_PEGTL_INTERNAL_EXPAND(...) __VA_ARGS__
|
|
|
|
#define TAO_CPP_PEGTL_INTERNAL_STRING_AT( S, x, n ) \
|
|
tao_json_pegtl::internal::string_at< S, ( 0##n < sizeof( x ) ) ? x[ 0##n ] : 0, ( 0##n < sizeof( x ) - 1 ) >::type
|
|
|
|
#define TAO_CPP_PEGTL_INTERNAL_JOIN_8( M, S, x, n ) \
|
|
tao_json_pegtl::internal::string_join< \
|
|
TAO_CPP_PEGTL_INTERNAL_DEFER( M )( S, x, n##0 ), \
|
|
TAO_CPP_PEGTL_INTERNAL_DEFER( M )( S, x, n##1 ), \
|
|
TAO_CPP_PEGTL_INTERNAL_DEFER( M )( S, x, n##2 ), \
|
|
TAO_CPP_PEGTL_INTERNAL_DEFER( M )( S, x, n##3 ), \
|
|
TAO_CPP_PEGTL_INTERNAL_DEFER( M )( S, x, n##4 ), \
|
|
TAO_CPP_PEGTL_INTERNAL_DEFER( M )( S, x, n##5 ), \
|
|
TAO_CPP_PEGTL_INTERNAL_DEFER( M )( S, x, n##6 ), \
|
|
TAO_CPP_PEGTL_INTERNAL_DEFER( M )( S, x, n##7 )>::type
|
|
|
|
#define TAO_CPP_PEGTL_INTERNAL_STRING_8( S, x, n ) \
|
|
TAO_CPP_PEGTL_INTERNAL_JOIN_8( TAO_CPP_PEGTL_INTERNAL_STRING_AT, S, x, n )
|
|
|
|
#define TAO_CPP_PEGTL_INTERNAL_STRING_64( S, x, n ) \
|
|
TAO_CPP_PEGTL_INTERNAL_JOIN_8( TAO_CPP_PEGTL_INTERNAL_STRING_8, S, x, n )
|
|
|
|
#define TAO_CPP_PEGTL_INTERNAL_STRING_512( S, x, n ) \
|
|
TAO_CPP_PEGTL_INTERNAL_JOIN_8( TAO_CPP_PEGTL_INTERNAL_STRING_64, S, x, n )
|
|
|
|
#define TAO_CPP_PEGTL_INTERNAL_STRING( S, x ) \
|
|
TAO_CPP_PEGTL_INTERNAL_EXPAND( \
|
|
TAO_CPP_PEGTL_INTERNAL_EXPAND( \
|
|
TAO_CPP_PEGTL_INTERNAL_EXPAND( \
|
|
tao_json_pegtl::internal::string_max_length< TAO_CPP_PEGTL_INTERNAL_STRING_512( S, x, ), sizeof( x ) - 1 >::type ) ) )
|
|
|
|
#define tao_json_pegtl_string_t( x ) \
|
|
TAO_CPP_PEGTL_INTERNAL_STRING( tao_json_pegtl::ascii::string, x )
|
|
|
|
#define tao_json_pegtl_istring_t( x ) \
|
|
TAO_CPP_PEGTL_INTERNAL_STRING( tao_json_pegtl::ascii::istring, x )
|
|
|
|
#endif
|