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/*
* This file is part of the API Extractor project.
*
* Copyright (C) 2013 Digia Plc 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;
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