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

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// Copyright (c) 2016-2022 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAO_PEGTL_INTERNAL_CSTRING_READER_HPP
#define TAO_PEGTL_INTERNAL_CSTRING_READER_HPP
#include <cassert>
#include <cstddef>
#include "../config.hpp"
namespace TAO_PEGTL_NAMESPACE::internal
{
struct cstring_reader
{
explicit cstring_reader( const char* zero_terminated ) noexcept
: m_cstring( zero_terminated )
{
assert( m_cstring != nullptr );
}
[[nodiscard]] std::size_t operator()( char* buffer, const std::size_t length ) noexcept
{
std::size_t i = 0;
char c;
while( ( i < length ) && ( ( c = m_cstring[ i ] ) != 0 ) ) {
*buffer++ = c;
++i;
}
m_cstring += i;
return i;
}
const char* m_cstring;
};
} // namespace TAO_PEGTL_NAMESPACE::internal
#endif