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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#include "FastPreprocessor.h"
#include <Literals.h>
#include <TranslationUnit.h>
#include <QtCore/QDebug>
using namespace CPlusPlus;
TranslationUnit *_previousUnit;
FastMacroResolver::FastMacroResolver(TranslationUnit *unit, const Snapshot &snapshot)
: _unit(unit), _snapshot(snapshot)
{
const QString fileName = QString::fromUtf8(unit->fileName(), unit->fileNameLength());
QSet<QString> processed;
updateCache(fileName, &processed);
}
bool FastMacroResolver::isMacro(TranslationUnit *unit, unsigned tokenIndex) const
{
if (unit != _unit){
qWarning() << Q_FUNC_INFO << "unexpected translation unit:" << unit->fileName();
return false;
}
const Token &tk = unit->tokenAt(tokenIndex);
if (tk.isNot(T_IDENTIFIER))
return false;
Identifier *id = tk.identifier;
const QByteArray macroName = QByteArray::fromRawData(id->chars(), id->size());
return _cachedMacros.contains(macroName);
}
void FastMacroResolver::updateCache(const QString &fileName, QSet<QString> *processed)
{
if (processed->contains(fileName))
return;
processed->insert(fileName);
if (Document::Ptr doc = _snapshot.value(fileName)) {
const QList<Macro> definedMacros = doc->definedMacros();
for (int i = definedMacros.size() - 1; i != -1; --i) {
const Macro ¯o = definedMacros.at(i);
if (macro.isHidden())
_cachedMacros.remove(macro.name());
else
_cachedMacros.insert(macro.name());
}
foreach (const Document::Include &incl, doc->includes())
updateCache(incl.fileName(), processed);
}
}
FastPreprocessor::FastPreprocessor(const Snapshot &snapshot)
: _snapshot(snapshot),
_preproc(this, &_env)
{ }
QByteArray FastPreprocessor::run(QString fileName, const QString &source)
{
_preproc.setExpandMacros(false);
if (Document::Ptr doc = _snapshot.value(fileName)) {
_merged.insert(fileName);
foreach (const Document::Include &i, doc->includes())
mergeEnvironment(i.fileName());
}
const QByteArray preprocessed = _preproc(fileName, source);
return preprocessed;
}
void FastPreprocessor::sourceNeeded(QString &fileName, IncludeType, unsigned)
{ mergeEnvironment(fileName); }
void FastPreprocessor::mergeEnvironment(const QString &fileName)
{
if (! _merged.contains(fileName)) {
_merged.insert(fileName);
if (Document::Ptr doc = _snapshot.value(fileName)) {
foreach (const Document::Include &i, doc->includes())
mergeEnvironment(i.fileName());
_env.addMacros(doc->definedMacros());
}
}
}
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