Moved the preprocessor.

1 files changed, 361 insertions, 0 deletions

diff --git a/src/libs/cplusplus/pp-macro-expander.cpp b/src/libs/cplusplus/pp-macro-expander.cpp
new file mode 100644
index 0000000000..9ae9702fe1
--- /dev/null
+++ b/src/libs/cplusplus/pp-macro-expander.cpp
@@ -0,0 +1,361 @@
+/***************************************************************************
+**
+** 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 1.2, included in the file GPL_EXCEPTION.txt in this package.
+**
+***************************************************************************/
+
+#include "pp.h"
+#include "pp-macro-expander.h"
+#include <QDateTime>
+
+using namespace CPlusPlus;
+
+MacroExpander::MacroExpander (Environment &env, pp_frame *frame)
+    : env(env), frame(frame),
+      lines(0), generated_lines(0)
+{ }
+
+const QByteArray *MacroExpander::resolve_formal(const QByteArray &__name)
+{
+    if (! (frame && frame->expanding_macro))
+        return 0;
+
+    const QVector<QByteArray> &formals = frame->expanding_macro->formals;
+    for (int index = 0; index < formals.size(); ++index) {
+        const QByteArray formal = formals.at(index);
+
+        if (formal == __name && index < frame->actuals.size())
+            return &frame->actuals.at(index);
+    }
+
+    return 0;
+}
+
+const char *MacroExpander::operator () (const char *__first, const char *__last,
+                                        QByteArray *__result)
+{
+    generated_lines = 0;
+    __first = skip_blanks (__first, __last);
+    lines = skip_blanks.lines;
+
+    while (__first != __last)
+    {
+        if (*__first == '\n')
+        {
+            __result->append("\n# ");
+            __result->append(QByteArray::number(env.currentLine));
+            __result->append(' ');
+            __result->append('"');
+            __result->append(env.current_file);
+            __result->append('"');
+            __result->append('\n');
+            ++lines;
+
+            __first = skip_blanks (++__first, __last);
+            lines += skip_blanks.lines;
+
+            if (__first != __last && *__first == '#')
+                break;
+        }
+        else if (*__first == '#')
+        {
+            __first = skip_blanks (++__first, __last);
+            lines += skip_blanks.lines;
+
+            const char *end_id = skip_identifier (__first, __last);
+            const QByteArray fast_name(__first, end_id - __first);
+            __first = end_id;
+
+            if (const QByteArray *actual = resolve_formal (fast_name))
+            {
+                __result->append('\"');
+
+                const char *actual_begin = actual->constData ();
+                const char *actual_end = actual_begin + actual->size ();
+
+                for (const char *it = skip_whitespaces (actual_begin, actual_end);
+                        it != actual_end; ++it)
+                {
+                    if (*it == '"' || *it == '\\')
+                    {
+                        __result->append('\\');
+                        __result->append(*it);
+                    }
+                    else if (*it == '\n')
+                    {
+                        __result->append('"');
+                        __result->append('\n');
+                        __result->append('"');
+                    }
+                    else
+                        __result->append(*it);
+                }
+
+                __result->append('\"');
+            }
+            else
+                __result->append('#'); // ### warning message?
+        }
+        else if (*__first == '\"')
+        {
+            const char *next_pos = skip_string_literal (__first, __last);
+            lines += skip_string_literal.lines;
+            __result->append(__first, next_pos - __first);
+            __first = next_pos;
+        }
+        else if (*__first == '\'')
+        {
+            const char *next_pos = skip_char_literal (__first, __last);
+            lines += skip_char_literal.lines;
+            __result->append(__first, next_pos - __first);
+            __first = next_pos;
+        }
+        else if (_PP_internal::comment_p (__first, __last))
+        {
+            __first = skip_comment_or_divop (__first, __last);
+            int n = skip_comment_or_divop.lines;
+            lines += n;
+
+            while (n-- > 0)
+                __result->append('\n');
+        }
+        else if (pp_isspace (*__first))
+        {
+            for (; __first != __last; ++__first)
+            {
+                if (*__first == '\n' || !pp_isspace (*__first))
+                    break;
+            }
+
+            __result->append(' ');
+        }
+        else if (pp_isdigit (*__first))
+        {
+            const char *next_pos = skip_number (__first, __last);
+            lines += skip_number.lines;
+            __result->append(__first, next_pos - __first);
+            __first = next_pos;
+        }
+        else if (pp_isalpha (*__first) || *__first == '_')
+        {
+            const char *name_begin = __first;
+            const char *name_end = skip_identifier (__first, __last);
+            __first = name_end; // advance
+
+            // search for the paste token
+            const char *next = skip_blanks (__first, __last);
+            bool paste = false;
+            if (next != __last && *next == '#')
+            {
+                paste = true;
+                ++next;
+                if (next != __last && *next == '#')
+                    __first = skip_blanks(++next, __last);
+            }
+
+            const QByteArray fast_name(name_begin, name_end - name_begin);
+
+            if (const QByteArray *actual = resolve_formal (fast_name))
+            {
+                const char *begin = actual->constData ();
+                const char *end = begin + actual->size ();
+                if (paste) {
+                    for (--end; end != begin - 1; --end) {
+                        if (! pp_isspace(*end))
+                            break;
+                    }
+                    ++end;
+                }
+                __result->append(begin, end - begin);
+                continue;
+            }
+
+            Macro *macro = env.resolve (fast_name);
+            if (! macro || macro->hidden || env.hide_next)
+            {
+                if (fast_name.size () == 7 && fast_name [0] == 'd' && fast_name == "defined")
+                    env.hide_next = true;
+                else
+                    env.hide_next = false;
+
+                if (fast_name.size () == 8 && fast_name [0] == '_' && fast_name [1] == '_')
+                {
+                    if (fast_name == "__LINE__")
+                    {
+                        char buf [16];
+                        const size_t count = qsnprintf (buf, 16, "%d", env.currentLine + lines);
+                        __result->append(buf, count);
+                        continue;
+                    }
+
+                    else if (fast_name == "__FILE__")
+                    {
+                        __result->append('"');
+                        __result->append(env.current_file);
+                        __result->append('"');
+                        continue;
+                    }
+
+                    else if (fast_name == "__DATE__")
+                    {
+                        __result->append('"');
+                        __result->append(QDate::currentDate().toString().toUtf8());
+                        __result->append('"');
+                        continue;
+                    }
+
+                    else if (fast_name == "__TIME__")
+                    {
+                        __result->append('"');
+                        __result->append(QTime::currentTime().toString().toUtf8());
+                        __result->append('"');
+                        continue;
+                    }
+
+                }
+
+                __result->append(name_begin, name_end - name_begin);
+                continue;
+            }
+
+            if (! macro->function_like)
+            {
+                Macro *m = 0;
+
+                if (! macro->definition.isEmpty())
+                {
+                    macro->hidden = true;
+
+                    QByteArray __tmp;
+                    __tmp.reserve (256);
+
+                    MacroExpander expand_macro (env);
+                    expand_macro (macro->definition.constBegin (), macro->definition.constEnd (), &__tmp);
+                    generated_lines += expand_macro.lines;
+
+                    if (! __tmp.isEmpty ())
+                    {
+                        const char *__tmp_begin = __tmp.constBegin();
+                        const char *__tmp_end = __tmp.constEnd();
+                        const char *__begin_id = skip_whitespaces (__tmp_begin, __tmp_end);
+                        const char *__end_id = skip_identifier (__begin_id, __tmp_end);
+
+                        if (__end_id == __tmp_end)
+                        {
+                            const QByteArray __id (__begin_id, __end_id - __begin_id);
+                            m = env.resolve (__id);
+                        }
+
+                        if (! m)
+                            *__result += __tmp;
+                    }
+
+                    macro->hidden = false;
+                }
+
+                if (! m)
+                    continue;
+
+                macro = m;
+            }
+
+            // function like macro
+            const char *arg_it = skip_whitespaces (__first, __last);
+
+            if (arg_it == __last || *arg_it != '(')
+            {
+                __result->append(name_begin, name_end - name_begin);
+                lines += skip_whitespaces.lines;
+                __first = arg_it;
+                continue;
+            }
+
+            QVector<QByteArray> actuals;
+            actuals.reserve (5);
+            ++arg_it; // skip '('
+
+            MacroExpander expand_actual (env, frame);
+
+            const char *arg_end = skip_argument_variadics (actuals, macro, arg_it, __last);
+            if (arg_it != arg_end)
+            {
+                const QByteArray actual (arg_it, arg_end - arg_it);
+                QByteArray expanded;
+                expand_actual (actual.constBegin (), actual.constEnd (), &expanded);
+                actuals.push_back (expanded);
+                arg_it = arg_end;
+            }
+
+            while (arg_it != __last && *arg_end == ',')
+            {
+                ++arg_it; // skip ','
+
+                arg_end = skip_argument_variadics (actuals, macro, arg_it, __last);
+                const QByteArray actual (arg_it, arg_end - arg_it);
+                QByteArray expanded;
+                expand_actual (actual.constBegin (), actual.constEnd (), &expanded);
+                actuals.push_back (expanded);
+                arg_it = arg_end;
+            }
+
+            if (! (arg_it != __last && *arg_it == ')'))
+                return __last;
+
+            ++arg_it; // skip ')'
+            __first = arg_it;
+
+            pp_frame frame (macro, actuals);
+            MacroExpander expand_macro (env, &frame);
+            macro->hidden = true;
+            expand_macro (macro->definition.constBegin (), macro->definition.constEnd (), __result);
+            macro->hidden = false;
+            generated_lines += expand_macro.lines;
+        }
+        else
+            __result->append(*__first++);
+    }
+
+    return __first;
+}
+
+const char *MacroExpander::skip_argument_variadics (QVector<QByteArray> const &__actuals,
+                                                    Macro *__macro,
+                                                    const char *__first, const char *__last)
+{
+    const char *arg_end = skip_argument (__first, __last);
+
+    while (__macro->variadics && __first != arg_end && arg_end != __last && *arg_end == ','
+           && (__actuals.size () + 1) == __macro->formals.size ())
+    {
+        arg_end = skip_argument (++arg_end, __last);
+    }
+
+    return arg_end;
+}