boost/wave/cpplexer/re2clex/scanner.hpp
/*=============================================================================
Boost.Wave: A Standard compliant C++ preprocessor library
http://www.boost.org/
Copyright (c) 2001 Daniel C. Nuffer.
Copyright (c) 2001-2012 Hartmut Kaiser.
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#if !defined(BOOST_SCANNER_HPP_F4FB01EB_E75C_4537_A146_D34B9895EF37_INCLUDED)
#define BOOST_SCANNER_HPP_F4FB01EB_E75C_4537_A146_D34B9895EF37_INCLUDED
#include <boost/wave/wave_config.hpp>
#include <boost/wave/cpplexer/re2clex/aq.hpp>
// this must occur after all of the includes and before any code appears
#ifdef BOOST_HAS_ABI_HEADERS
#include BOOST_ABI_PREFIX
#endif
///////////////////////////////////////////////////////////////////////////////
namespace boost {
namespace wave {
namespace cpplexer {
namespace re2clex {
template<typename Iterator>
struct Scanner;
typedef unsigned char uchar;
template<typename Iterator>
struct Scanner {
typedef int (* ReportErrorProc)(struct Scanner const *, int errorcode,
char const *, ...);
Scanner(Iterator const & f, Iterator const & l)
: first(f), act(f), last(l),
bot(0), top(0), eof(0), tok(0), ptr(0), cur(0), lim(0),
eol_offsets(aq_create())
// remaining data members externally initialized
{}
~Scanner()
{
aq_terminate(eol_offsets);
}
Iterator first; /* start of input buffer */
Iterator act; /* act position of input buffer */
Iterator last; /* end (one past last char) of input buffer */
uchar* bot; /* beginning of the current buffer */
uchar* top; /* top of the current buffer */
uchar* eof; /* when we read in the last buffer, will point 1 past the
end of the file, otherwise 0 */
uchar* tok; /* points to the beginning of the current token */
uchar* ptr; /* used for YYMARKER - saves backtracking info */
uchar* cur; /* saves the cursor (maybe is redundant with tok?) */
uchar* lim; /* used for YYLIMIT - points to the end of the buffer */
/* (lim == top) except for the last buffer, it points to
the end of the input (lim == eof - 1) */
std::size_t line; /* current line being lex'ed */
std::size_t column; /* current token start column position */
std::size_t curr_column; /* current column position */
ReportErrorProc error_proc; /* must be != 0, this function is called to
report an error */
char const *file_name; /* name of the lex'ed file */
aq_queue eol_offsets;
bool enable_ms_extensions; /* enable MS extensions */
bool act_in_c99_mode; /* lexer works in C99 mode */
bool detect_pp_numbers; /* lexer should prefer to detect pp-numbers */
bool enable_import_keyword; /* recognize import as a keyword */
bool single_line_only; /* don't report missing eol's in C++ comments */
bool act_in_cpp0x_mode; /* lexer works in C++11 mode */
bool act_in_cpp2a_mode; /* lexer works in C++20 mode */
};
///////////////////////////////////////////////////////////////////////////////
} // namespace re2clex
} // namespace cpplexer
} // namespace wave
} // namespace boost
// the suffix header occurs after all of the code
#ifdef BOOST_HAS_ABI_HEADERS
#include BOOST_ABI_SUFFIX
#endif
#endif // !defined(BOOST_SCANNER_HPP_F4FB01EB_E75C_4537_A146_D34B9895EF37_INCLUDED)
