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// Copyright (c) 2016-2017 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAOCPP_PEGTL_INCLUDE_INTERNAL_ACTION_INPUT_HPP
#define TAOCPP_PEGTL_INCLUDE_INTERNAL_ACTION_INPUT_HPP
#include <cstddef>
#include <string>
#include "iterator.hpp"
#include "../config.hpp"
#include "../position.hpp"
namespace tao
{
namespace TAOCPP_PEGTL_NAMESPACE
{
namespace internal
{
inline const char* begin_c_ptr( const char* p ) noexcept
{
return p;
}
inline const char* begin_c_ptr( const iterator& it ) noexcept
{
return it.data;
}
template< typename Input >
class action_input
{
public:
using input_t = Input;
using iterator_t = typename Input::iterator_t;
action_input( const iterator_t& in_begin, const Input& in_input ) noexcept
: m_begin( in_begin ),
m_input( in_input )
{
}
action_input( const action_input& ) = delete;
action_input& operator=( const action_input& ) = delete;
const iterator_t& iterator() const noexcept
{
return m_begin;
}
const Input& input() const noexcept
{
return m_input;
}
const char* begin() const noexcept
{
return begin_c_ptr( iterator() );
}
const char* end() const noexcept
{
return input().current();
}
bool empty() const noexcept
{
return begin() == end();
}
std::size_t size() const noexcept
{
return std::size_t( end() - begin() );
}
std::string string() const
{
return std::string( begin(), end() );
}
char peek_char( const std::size_t offset = 0 ) const noexcept
{
return begin()[ offset ];
}
unsigned char peek_byte( const std::size_t offset = 0 ) const noexcept
{
return static_cast< unsigned char >( peek_char( offset ) );
}
TAOCPP_PEGTL_NAMESPACE::position position() const noexcept
{
return input().position( iterator() ); // NOTE: Not efficient with LAZY inputs.
}
protected:
const iterator_t m_begin;
const Input& m_input;
};
} // namespace internal
} // namespace TAOCPP_PEGTL_NAMESPACE
} // namespace tao
#endif
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