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Diffstat (limited to 'generator/parser/rpp/pp-scanner.h')
| -rw-r--r-- | generator/parser/rpp/pp-scanner.h | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/generator/parser/rpp/pp-scanner.h b/generator/parser/rpp/pp-scanner.h new file mode 100644 index 0000000..2266b3a --- /dev/null +++ b/generator/parser/rpp/pp-scanner.h @@ -0,0 +1,340 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** Copyright 2005 Roberto Raggi <roberto@kdevelop.org> +** +** This file is part of $PRODUCT$. +** +** $CPP_LICENSE$ +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +****************************************************************************/ + +#ifndef PP_SCANNER_H +#define PP_SCANNER_H + +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; |