Move Qt profile setup into a dedicated library.

Otherwise all changes to the implementation will have to be duplicated
in IDEs.

Change-Id: I61e6d4fa1ee9b724eb5d9de9f233dc915a6c8bc3
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

1 files changed, 116 insertions, 0 deletions

diff --git a/src/lib/corelib/buildgraph/rulesevaluationcontext.cpp b/src/lib/corelib/buildgraph/rulesevaluationcontext.cpp
new file mode 100644
index 000000000..5cabea9d7
--- /dev/null
+++ b/src/lib/corelib/buildgraph/rulesevaluationcontext.cpp
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** 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://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 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.
+**
+** 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 "rulesevaluationcontext.h"
+
+#include "artifact.h"
+#include "command.h"
+#include "transformer.h"
+#include <language/language.h>
+#include <language/scriptengine.h>
+#include <logging/translator.h>
+#include <tools/error.h>
+#include <tools/fileinfo.h>
+#include <tools/progressobserver.h>
+#include <tools/qbsassert.h>
+
+#include <QVariant>
+
+namespace qbs {
+namespace Internal {
+
+RulesEvaluationContext::RulesEvaluationContext(const Logger &logger)
+    : m_engine(new ScriptEngine(logger)), m_observer(0), m_initScopeCalls(0)
+{
+    m_prepareScriptScope = m_engine->newObject();
+    ProcessCommand::setupForJavaScript(m_prepareScriptScope);
+    JavaScriptCommand::setupForJavaScript(m_prepareScriptScope);
+}
+
+RulesEvaluationContext::~RulesEvaluationContext()
+{
+    delete m_engine;
+}
+
+void RulesEvaluationContext::initializeObserver(const QString &description, int maximumProgress)
+{
+    if (m_observer)
+        m_observer->initialize(description, maximumProgress);
+}
+
+void RulesEvaluationContext::incrementProgressValue()
+{
+    if (m_observer)
+        m_observer->incrementProgressValue();
+}
+
+void RulesEvaluationContext::checkForCancelation()
+{
+    if (Q_UNLIKELY(m_observer && m_observer->canceled()))
+        throw ErrorInfo(Tr::tr("Build canceled."));
+}
+
+void RulesEvaluationContext::initScope()
+{
+    if (m_initScopeCalls++ > 0)
+        return;
+
+    m_engine->setProperty("lastSetupProject", QVariant());
+    m_engine->setProperty("lastSetupProduct", QVariant());
+
+    m_engine->clearImportsCache();
+    m_engine->pushContext();
+    m_scope = m_engine->newObject();
+    m_scope.setPrototype(m_prepareScriptScope);
+    m_engine->currentContext()->pushScope(m_scope);
+}
+
+void RulesEvaluationContext::cleanupScope()
+{
+    QBS_CHECK(m_initScopeCalls > 0);
+    if (--m_initScopeCalls > 0)
+        return;
+
+    m_scope = QScriptValue();
+    m_engine->currentContext()->popScope();
+    m_engine->popContext();
+}
+
+RulesEvaluationContext::Scope::Scope(RulesEvaluationContext *evalContext)
+    : m_evalContext(evalContext)
+{
+    evalContext->initScope();
+}
+
+RulesEvaluationContext::Scope::~Scope()
+{
+    m_evalContext->cleanupScope();
+}
+
+} // namespace Internal
+} // namespace qbs