Some cleanup in the C++ preprocessor.

Introduced pp-scanner.cpp, renamed `pp' to `Preprocessor' and removed useless #includes.

1 files changed, 296 insertions, 0 deletions

diff --git a/src/libs/cplusplus/pp-scanner.cpp b/src/libs/cplusplus/pp-scanner.cpp
new file mode 100644
index 0000000000..8f0f9bf9ae
--- /dev/null
+++ b/src/libs/cplusplus/pp-scanner.cpp
@@ -0,0 +1,296 @@
+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+**
+** Non-Open Source Usage
+**
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.
+**
+** GNU General Public License Usage
+**
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception
+** version 1.3, included in the file GPL_EXCEPTION.txt in this package.
+**
+***************************************************************************/
+/*
+  Copyright 2005 Roberto Raggi <roberto@kdevelop.org>
+
+  Permission to use, copy, modify, distribute, and sell this software and its
+  documentation for any purpose is hereby granted without fee, provided that
+  the above copyright notice appear in all copies and that both that
+  copyright notice and this permission notice appear in supporting
+  documentation.
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+  KDEVELOP TEAM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+  AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include "pp-scanner.h"
+#include "pp-cctype.h"
+
+using namespace CPlusPlus;
+
+const char *pp_skip_blanks::operator () (const char *__first, const char *__last)
+{
+    lines = 0;
+
+    for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) {
+        if (*__first == '\\') {
+            const char *__begin = __first;
+            ++__begin;
+
+            if (__begin != __last && *__begin == '\n')
+                ++__first;
+            else
+                break;
+        } else if (*__first == '\n' || !pp_isspace (*__first))
+            break;
+    }
+
+    return __first;
+}
+
+const char *pp_skip_whitespaces::operator () (const char *__first, const char *__last)
+{
+    lines = 0;
+
+    for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) {
+        if (! pp_isspace (*__first))
+            break;
+    }
+
+    return __first;
+}
+
+const char *pp_skip_comment_or_divop::operator () (const char *__first, const char *__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:
+            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;
+}
+
+const char *pp_skip_identifier::operator () (const char *__first, const char *__last)
+{
+    lines = 0;
+
+    for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) {
+        if (! pp_isalnum (*__first) && *__first != '_')
+            break;
+    }
+
+    return __first;
+}
+
+const char *pp_skip_number::operator () (const char *__first, const char *__last)
+{
+    lines = 0;
+
+    for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) {
+        if (! pp_isalnum (*__first) && *__first != '.')
+            break;
+    }
+
+    return __first;
+}
+
+const char *pp_skip_string_literal::operator () (const char *__first, const char *__last)
+{
+    enum {
+        BEGIN,
+        IN_STRING,
+        QUOTE,
+        END
+    } state (BEGIN);
+
+    lines = 0;
+
+    for (; __first != __last; lines += (*__first != '\n' ? 0 : 1), ++__first) {
+        switch (state)
+        {
+        default:
+            break;
+
+        case BEGIN:
+            if (*__first != '\"')
+                return __first;
+            state = IN_STRING;
+            break;
+
+        case IN_STRING:
+            if (! (*__first != '\n'))
+                return __last;
+
+            if (*__first == '\"')
+                state = END;
+            else if (*__first == '\\')
+                state = QUOTE;
+            break;
+
+        case QUOTE:
+            state = IN_STRING;
+            break;
+
+        case END:
+            return __first;
+        }
+    }
+
+    return __first;
+}
+
+const char *pp_skip_char_literal::operator () (const char *__first, const char *__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:
+            break;
+
+        case BEGIN:
+            if (*__first != '\'')
+                return __first;
+            state = IN_STRING;
+            break;
+
+        case IN_STRING:
+            if (! (*__first != '\n'))
+                return __last;
+
+            if (*__first == '\'')
+                state = END;
+            else if (*__first == '\\')
+                state = QUOTE;
+            break;
+
+        case QUOTE:
+            state = IN_STRING;
+            break;
+        }
+    }
+
+    return __first;
+}
+
+const char *pp_skip_argument::operator () (const char *__first, const char *__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;
+}
+