geode/codegen/Broma/PEGTL-3.2.7/include/tao/pegtl/internal/peek_char.hpp
2022-07-30 19:24:03 +03:00

32 lines
743 B
C++
Executable file

// Copyright (c) 2014-2022 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAO_PEGTL_INTERNAL_PEEK_CHAR_HPP
#define TAO_PEGTL_INTERNAL_PEEK_CHAR_HPP
#include <cstddef>
#include "../config.hpp"
#include "input_pair.hpp"
namespace TAO_PEGTL_NAMESPACE::internal
{
struct peek_char
{
using data_t = char;
using pair_t = input_pair< char >;
template< typename ParseInput >
[[nodiscard]] static pair_t peek( ParseInput& in ) noexcept( noexcept( in.empty() ) )
{
if( in.empty() ) {
return { 0, 0 };
}
return { in.peek_char(), 1 };
}
};
} // namespace TAO_PEGTL_NAMESPACE::internal
#endif