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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://www.qt.io/licensing. For further information
** use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "qtmocscanner.h"
#include "artifact.h"
#include "productbuilddata.h"
#include "scanresultcache.h"
#include <logging/translator.h>
#include <tools/scannerpluginmanager.h>
#include <tools/scripttools.h>
#include <QScriptContext>
#include <QScriptEngine>
#include <QDebug>
namespace qbs {
namespace Internal {
QtMocScanner::QtMocScanner(const ResolvedProductPtr &product, QScriptValue targetScriptValue,
const Logger &logger)
: m_product(product)
, m_targetScriptValue(targetScriptValue)
, m_logger(logger)
, m_scanResultCache(new ScanResultCache)
, m_cppScanner(0)
, m_hppScanner(0)
{
QScriptEngine *engine = targetScriptValue.engine();
QScriptValue scannerObj = engine->newObject();
targetScriptValue.setProperty(QLatin1String("QtMocScanner"), scannerObj);
QScriptValue applyFunction = engine->newFunction(&js_apply, this);
scannerObj.setProperty(QLatin1String("apply"), applyFunction);
}
QtMocScanner::~QtMocScanner()
{
m_targetScriptValue.setProperty(QLatin1String("QtMocScanner"), QScriptValue());
delete m_scanResultCache;
}
static ScanResultCache::Result runScanner(ScannerPlugin *scanner, const Artifact *artifact,
ScanResultCache *scanResultCache)
{
const QString &filepath = artifact->filePath();
ScanResultCache::Result scanResult = scanResultCache->value(scanner, filepath);
if (!scanResult.valid) {
scanResult.valid = true;
void *opaq = scanner->open(filepath.utf16(),
ScanForDependenciesFlag | ScanForFileTagsFlag);
if (!opaq || !scanner->additionalFileTags)
return scanResult;
int length = 0;
const char **szFileTagsFromScanner = scanner->additionalFileTags(opaq, &length);
if (szFileTagsFromScanner) {
for (int i = length; --i >= 0;)
scanResult.additionalFileTags += szFileTagsFromScanner[i];
}
QString baseDirOfInFilePath = artifact->dirPath();
forever {
int flags = 0;
const char *szOutFilePath = scanner->next(opaq, &length, &flags);
if (szOutFilePath == 0)
break;
QString includedFilePath = QString::fromLocal8Bit(szOutFilePath, length);
if (includedFilePath.isEmpty())
continue;
bool isLocalInclude = (flags & SC_LOCAL_INCLUDE_FLAG);
if (isLocalInclude) {
QString localFilePath = FileInfo::resolvePath(baseDirOfInFilePath, includedFilePath);
if (FileInfo::exists(localFilePath))
includedFilePath = localFilePath;
}
scanResult.deps += ScanResultCache::Dependency(includedFilePath);
}
scanner->close(opaq);
scanResultCache->insert(scanner, filepath, scanResult);
}
return scanResult;
}
void QtMocScanner::findIncludedMocCppFiles()
{
if (!m_includedMocCppFiles.isEmpty())
return;
if (m_logger.traceEnabled())
m_logger.qbsTrace() << "[QtMocScanner] looking for included moc_XXX.cpp files";
foreach (Artifact *artifact, m_product->lookupArtifactsByFileTag("cpp")) {
const ScanResultCache::Result scanResult
= runScanner(m_cppScanner, artifact, m_scanResultCache);
foreach (const ScanResultCache::Dependency &dependency, scanResult.deps) {
QString includedFilePath = dependency.filePath();
if (includedFilePath.startsWith("moc_") && includedFilePath.endsWith(".cpp")) {
if (m_logger.traceEnabled())
m_logger.qbsTrace() << "[QtMocScanner] " << artifact->fileName()
<< " includes " << includedFilePath;
includedFilePath.remove(0, 4);
includedFilePath.chop(4);
m_includedMocCppFiles.insert(includedFilePath, artifact->fileName());
}
}
}
}
QScriptValue QtMocScanner::js_apply(QScriptContext *ctx, QScriptEngine *engine, void *data)
{
QtMocScanner *that = reinterpret_cast<QtMocScanner *>(data);
QScriptValue input = ctx->argument(0);
return that->apply(engine, attachedPointer<Artifact>(input));
}
static QScriptValue scannerCountError(QScriptEngine *engine, int scannerCount,
const QString &fileTag)
{
return engine->currentContext()->throwError(
Tr::tr("There are %1 scanners for the file tag %2. "
"Expected is exactly one.").arg(scannerCount).arg(fileTag));
}
QScriptValue QtMocScanner::apply(QScriptEngine *engine, const Artifact *artifact)
{
if (!m_cppScanner) {
QList<ScannerPlugin *> scanners = ScannerPluginManager::scannersForFileTag("cpp");
if (scanners.count() != 1)
return scannerCountError(engine, scanners.count(), QLatin1String("cpp"));
m_cppScanner = scanners.first();
scanners = ScannerPluginManager::scannersForFileTag("hpp");
if (scanners.count() != 1)
return scannerCountError(engine, scanners.count(), QLatin1String("hpp"));
m_hppScanner = scanners.first();
}
findIncludedMocCppFiles();
if (m_logger.traceEnabled())
m_logger.qbsTrace() << "[QtMocScanner] scanning " << artifact->toString();
bool hasQObjectMacro = false;
bool mustCompile = false;
bool hasPluginMetaDataMacro = false;
const bool isHeaderFile = artifact->fileTags().contains("hpp");
ScannerPlugin * const scanner = isHeaderFile ? m_hppScanner : m_cppScanner;
const ScanResultCache::Result scanResult = runScanner(scanner, artifact, m_scanResultCache);
if (!scanResult.additionalFileTags.isEmpty()) {
if (isHeaderFile) {
if (scanResult.additionalFileTags.contains("moc_hpp"))
hasQObjectMacro = true;
if (scanResult.additionalFileTags.contains("moc_hpp_plugin")) {
hasQObjectMacro = true;
hasPluginMetaDataMacro = true;
}
if (!m_includedMocCppFiles.contains(FileInfo::completeBaseName(artifact->fileName())))
mustCompile = true;
} else {
if (scanResult.additionalFileTags.contains("moc_cpp"))
hasQObjectMacro = true;
}
}
if (m_logger.traceEnabled()) {
m_logger.qbsTrace() << "[QtMocScanner] hasQObjectMacro: " << hasQObjectMacro
<< " mustCompile: " << mustCompile
<< " hasPluginMetaDataMacro: " << hasPluginMetaDataMacro;
}
QScriptValue obj = engine->newObject();
obj.setProperty(QLatin1String("hasQObjectMacro"), hasQObjectMacro);
obj.setProperty(QLatin1String("mustCompile"), mustCompile);
obj.setProperty(QLatin1String("hasPluginMetaDataMacro"), hasPluginMetaDataMacro);
return obj;
}
} // namespace Internal
} // namespace qbs
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