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1 | /*============================================================================= |
2 | Boost.Wave: A Standard compliant C++ preprocessor library | |
3 | ||
4 | http://www.boost.org/ | |
5 | ||
6 | Copyright (c) 2001 Daniel C. Nuffer. | |
7 | Copyright (c) 2001-2012 Hartmut Kaiser. | |
8 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
9 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
10 | =============================================================================*/ | |
11 | ||
20effc67 TL |
12 | #if !defined(BOOST_SCANNER_HPP_F4FB01EB_E75C_4537_A146_D34B9895EF37_INCLUDED) |
13 | #define BOOST_SCANNER_HPP_F4FB01EB_E75C_4537_A146_D34B9895EF37_INCLUDED | |
7c673cae FG |
14 | |
15 | #include <boost/wave/wave_config.hpp> | |
16 | #include <boost/wave/cpplexer/re2clex/aq.hpp> | |
17 | ||
18 | // this must occur after all of the includes and before any code appears | |
19 | #ifdef BOOST_HAS_ABI_HEADERS | |
20 | #include BOOST_ABI_PREFIX | |
21 | #endif | |
22 | ||
23 | /////////////////////////////////////////////////////////////////////////////// | |
24 | namespace boost { | |
25 | namespace wave { | |
26 | namespace cpplexer { | |
27 | namespace re2clex { | |
28 | ||
11fdf7f2 | 29 | template<typename Iterator> |
7c673cae FG |
30 | struct Scanner; |
31 | typedef unsigned char uchar; | |
7c673cae | 32 | |
11fdf7f2 TL |
33 | template<typename Iterator> |
34 | struct Scanner { | |
35 | typedef int (* ReportErrorProc)(struct Scanner const *, int errorcode, | |
36 | char const *, ...); | |
37 | ||
38 | ||
39 | Scanner(Iterator const & f, Iterator const & l) | |
40 | : first(f), act(f), last(l), | |
41 | bot(0), top(0), eof(0), tok(0), ptr(0), cur(0), lim(0), | |
42 | eol_offsets(aq_create()) | |
43 | // remaining data members externally initialized | |
44 | {} | |
45 | ||
46 | ~Scanner() | |
47 | { | |
48 | aq_terminate(eol_offsets); | |
49 | } | |
50 | ||
51 | Iterator first; /* start of input buffer */ | |
52 | Iterator act; /* act position of input buffer */ | |
53 | Iterator last; /* end (one past last char) of input buffer */ | |
7c673cae FG |
54 | uchar* bot; /* beginning of the current buffer */ |
55 | uchar* top; /* top of the current buffer */ | |
56 | uchar* eof; /* when we read in the last buffer, will point 1 past the | |
57 | end of the file, otherwise 0 */ | |
58 | uchar* tok; /* points to the beginning of the current token */ | |
59 | uchar* ptr; /* used for YYMARKER - saves backtracking info */ | |
60 | uchar* cur; /* saves the cursor (maybe is redundant with tok?) */ | |
61 | uchar* lim; /* used for YYLIMIT - points to the end of the buffer */ | |
62 | /* (lim == top) except for the last buffer, it points to | |
63 | the end of the input (lim == eof - 1) */ | |
64 | std::size_t line; /* current line being lex'ed */ | |
65 | std::size_t column; /* current token start column position */ | |
66 | std::size_t curr_column; /* current column position */ | |
67 | ReportErrorProc error_proc; /* must be != 0, this function is called to | |
68 | report an error */ | |
69 | char const *file_name; /* name of the lex'ed file */ | |
70 | aq_queue eol_offsets; | |
71 | bool enable_ms_extensions; /* enable MS extensions */ | |
72 | bool act_in_c99_mode; /* lexer works in C99 mode */ | |
73 | bool detect_pp_numbers; /* lexer should prefer to detect pp-numbers */ | |
74 | bool enable_import_keyword; /* recognize import as a keyword */ | |
75 | bool single_line_only; /* don't report missing eol's in C++ comments */ | |
76 | bool act_in_cpp0x_mode; /* lexer works in C++11 mode */ | |
20effc67 | 77 | bool act_in_cpp2a_mode; /* lexer works in C++20 mode */ |
11fdf7f2 | 78 | }; |
7c673cae FG |
79 | |
80 | /////////////////////////////////////////////////////////////////////////////// | |
81 | } // namespace re2clex | |
82 | } // namespace cpplexer | |
83 | } // namespace wave | |
84 | } // namespace boost | |
85 | ||
86 | // the suffix header occurs after all of the code | |
87 | #ifdef BOOST_HAS_ABI_HEADERS | |
88 | #include BOOST_ABI_SUFFIX | |
89 | #endif | |
90 | ||
20effc67 | 91 | #endif // !defined(BOOST_SCANNER_HPP_F4FB01EB_E75C_4537_A146_D34B9895EF37_INCLUDED) |