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Diffstat (limited to 'parser/rpp/pp-scanner.h')
| -rw-r--r-- | parser/rpp/pp-scanner.h | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/parser/rpp/pp-scanner.h b/parser/rpp/pp-scanner.h new file mode 100644 index 000000000..e97b15843 --- /dev/null +++ b/parser/rpp/pp-scanner.h @@ -0,0 +1,313 @@ +/* + * This file is part of the API Extractor project. + * + * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). + * Copyright 2005 Roberto Raggi <roberto@kdevelop.org> + * + * Contact: PySide team <contact@pyside.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#ifndef PP_SCANNER_H +#define PP_SCANNER_H + +#include "pp-cctype.h" +#include <cassert> + +namespace rpp +{ + +struct pp_skip_blanks { + int lines; + + template <typename _InputIterator> + _InputIterator operator()(_InputIterator __first, _InputIterator __last) { + lines = 0; + + for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) { + if (*__first == '\\') { + _InputIterator __begin = __first; + ++__begin; + + if (__begin != __last && *__begin == '\n') + ++__first; + else + break; + } else if (*__first == '\n' || !pp_isspace(*__first)) + break; + } + + return __first; + } +}; + +struct pp_skip_whitespaces { + int lines; + + template <typename _InputIterator> + _InputIterator operator()(_InputIterator __first, _InputIterator __last) { + lines = 0; + + for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) { + if (! pp_isspace(*__first)) + break; + } + + return __first; + } +}; + +struct pp_skip_comment_or_divop { + int lines; + + template <typename _InputIterator> + _InputIterator operator()(_InputIterator __first, _InputIterator __last) { + enum { + MAYBE_BEGIN, + BEGIN, + MAYBE_END, + END, + IN_COMMENT, + IN_CXX_COMMENT + } state(MAYBE_BEGIN); + + lines = 0; + + for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) { + switch (state) { + default: + assert(0); + break; + + case MAYBE_BEGIN: + if (*__first != '/') + return __first; + + state = BEGIN; + break; + + case BEGIN: + if (*__first == '*') + state = IN_COMMENT; + else if (*__first == '/') + state = IN_CXX_COMMENT; + else + return __first; + break; + + case IN_COMMENT: + if (*__first == '*') + state = MAYBE_END; + break; + + case IN_CXX_COMMENT: + if (*__first == '\n') + return __first; + break; + + case MAYBE_END: + if (*__first == '/') + state = END; + else if (*__first != '*') + state = IN_COMMENT; + break; + + case END: + return __first; + } + } + + return __first; + } +}; + +struct pp_skip_identifier { + int lines; + + template <typename _InputIterator> + _InputIterator operator()(_InputIterator __first, _InputIterator __last) { + lines = 0; + + for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) { + if (! pp_isalnum(*__first) && *__first != '_') + break; + } + + return __first; + } +}; + +struct pp_skip_number { + int lines; + + template <typename _InputIterator> + _InputIterator operator()(_InputIterator __first, _InputIterator __last) { + lines = 0; + + for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) { + if (! pp_isalnum(*__first) && *__first != '.') + break; + } + + return __first; + } +}; + +struct pp_skip_string_literal { + int lines; + + template <typename _InputIterator> + _InputIterator operator()(_InputIterator __first, _InputIterator __last) { + enum { + BEGIN, + IN_STRING, + QUOTE, + END + } state(BEGIN); + + lines = 0; + + for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) { + switch (state) { + default: + assert(0); + break; + + case BEGIN: + if (*__first != '\"') + return __first; + state = IN_STRING; + break; + + case IN_STRING: + assert(*__first != '\n'); + + if (*__first == '\"') + state = END; + else if (*__first == '\\') + state = QUOTE; + break; + + case QUOTE: + state = IN_STRING; + break; + + case END: + return __first; + } + } + + return __first; + } +}; + +struct pp_skip_char_literal { + int lines; + + template <typename _InputIterator> + _InputIterator operator()(_InputIterator __first, _InputIterator __last) { + enum { + BEGIN, + IN_STRING, + QUOTE, + END + } state(BEGIN); + + lines = 0; + + for (; state != END && __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) { + switch (state) { + default: + assert(0); + break; + + case BEGIN: + if (*__first != '\'') + return __first; + state = IN_STRING; + break; + + case IN_STRING: + assert(*__first != '\n'); + + if (*__first == '\'') + state = END; + else if (*__first == '\\') + state = QUOTE; + break; + + case QUOTE: + state = IN_STRING; + break; + } + } + + return __first; + } +}; + +struct pp_skip_argument { + pp_skip_identifier skip_number; + pp_skip_identifier skip_identifier; + pp_skip_string_literal skip_string_literal; + pp_skip_char_literal skip_char_literal; + pp_skip_comment_or_divop skip_comment_or_divop; + int lines; + + template <typename _InputIterator> + _InputIterator operator()(_InputIterator __first, _InputIterator __last) { + int depth = 0; + lines = 0; + + while (__first != __last) { + if (!depth && (*__first == ')' || *__first == ',')) + break; + else if (*__first == '(') + ++depth, ++__first; + else if (*__first == ')') + --depth, ++__first; + else if (*__first == '\"') { + __first = skip_string_literal(__first, __last); + lines += skip_string_literal.lines; + } else if (*__first == '\'') { + __first = skip_char_literal(__first, __last); + lines += skip_char_literal.lines; + } else if (*__first == '/') { + __first = skip_comment_or_divop(__first, __last); + lines += skip_comment_or_divop.lines; + } else if (pp_isalpha(*__first) || *__first == '_') { + __first = skip_identifier(__first, __last); + lines += skip_identifier.lines; + } else if (pp_isdigit(*__first)) { + __first = skip_number(__first, __last); + lines += skip_number.lines; + } else if (*__first == '\n') { + ++__first; + ++lines; + } else + ++__first; + } + + return __first; + } +}; + +} // namespace rpp + +#endif // PP_SCANNER_H + +// kate: space-indent on; indent-width 2; replace-tabs on; |