Move DataCollector into debugger plugin

The data collector and all the jobs it uses to interact with the engine
are only used from the debugger plugin. We can as well move them there.

Change-Id: Ia48251f08b48c7e1e607b8ae2a3d1de29f80f742
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

1 files changed, 178 insertions, 0 deletions

diff --git a/src/plugins/qmltooling/qmldbg_debugger/qv4datacollector.h b/src/plugins/qmltooling/qmldbg_debugger/qv4datacollector.h
new file mode 100644
index 0000000000..c91b77cb93
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_debugger/qv4datacollector.h
@@ -0,0 +1,178 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** 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 The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. 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.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QV4DATACOLLECTOR_H
+#define QV4DATACOLLECTOR_H
+
+#include <private/qv4engine_p.h>
+#include <private/qv4debugging_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QV4DataCollector
+{
+public:
+    typedef uint Ref;
+    typedef QVector<uint> Refs;
+
+    static QV4::Heap::CallContext *findContext(QV4::Heap::ExecutionContext *ctxt, int frame);
+    static QV4::Heap::CallContext *findScope(QV4::Heap::ExecutionContext *ctxt, int scope);
+    static QVector<QV4::Heap::ExecutionContext::ContextType> getScopeTypes(
+            QV4::ExecutionEngine *engine, int frame);
+
+    QV4DataCollector(QV4::ExecutionEngine *engine);
+    ~QV4DataCollector();
+
+    void collect(const QV4::ScopedValue &value);
+
+    QJsonObject lookupRef(Ref ref);
+
+    Ref addFunctionRef(const QString &functionName);
+    Ref addScriptRef(const QString &scriptName);
+
+    void collectScope(QJsonObject *dict, QV4::Debugging::Debugger *debugger, int frameNr,
+                      int scopeNr);
+
+    QV4::ExecutionEngine *engine() const { return m_engine; }
+
+private:
+    friend class RefHolder;
+
+    Ref addRef(QV4::Value value, bool deduplicate = true);
+    QV4::ReturnedValue getValue(Ref ref);
+    bool lookupSpecialRef(Ref ref, QJsonObject *dict);
+
+    QJsonArray collectProperties(QV4::Object *object);
+    QJsonObject collectAsJson(const QString &name, const QV4::ScopedValue &value);
+    void collectArgumentsInContext();
+
+    QV4::ExecutionEngine *m_engine;
+    Refs *m_collectedRefs;
+    QV4::PersistentValue values;
+    typedef QHash<Ref, QJsonObject> SpecialRefs;
+    SpecialRefs specialRefs;
+};
+
+class RefHolder {
+public:
+    RefHolder(QV4DataCollector *collector, QV4DataCollector::Refs *target) :
+        m_collector(collector), m_previousRefs(collector->m_collectedRefs)
+    {
+        m_collector->m_collectedRefs = target;
+    }
+
+    ~RefHolder()
+    {
+        std::swap(m_collector->m_collectedRefs, m_previousRefs);
+    }
+
+private:
+    QV4DataCollector *m_collector;
+    QV4DataCollector::Refs *m_previousRefs;
+};
+
+class ExpressionEvalJob: public QV4::Debugging::Debugger::JavaScriptJob
+{
+    QV4DataCollector *collector;
+
+public:
+    ExpressionEvalJob(QV4::ExecutionEngine *engine, int frameNr, const QString &expression,
+                      QV4DataCollector *collector);
+    virtual void handleResult(QV4::ScopedValue &result);
+};
+
+class GatherSourcesJob: public QV4::Debugging::Debugger::Job
+{
+    QV4::ExecutionEngine *engine;
+    const int seq;
+
+public:
+    GatherSourcesJob(QV4::ExecutionEngine *engine, int seq);
+    void run();
+};
+
+class ArgumentCollectJob: public QV4::Debugging::Debugger::Job
+{
+    QV4::ExecutionEngine *engine;
+    QV4DataCollector *collector;
+    QStringList *names;
+    int frameNr;
+    int scopeNr;
+
+public:
+    ArgumentCollectJob(QV4::ExecutionEngine *engine, QV4DataCollector *collector,
+                       QStringList *names, int frameNr, int scopeNr);
+    void run();
+};
+
+class LocalCollectJob: public QV4::Debugging::Debugger::Job
+{
+    QV4::ExecutionEngine *engine;
+    QV4DataCollector *collector;
+    QStringList *names;
+    int frameNr;
+    int scopeNr;
+
+public:
+    LocalCollectJob(QV4::ExecutionEngine *engine, QV4DataCollector *collector, QStringList *names,
+                    int frameNr, int scopeNr);
+    void run();
+};
+
+class ThisCollectJob: public QV4::Debugging::Debugger::Job
+{
+    QV4::ExecutionEngine *engine;
+    QV4DataCollector *collector;
+    int frameNr;
+    bool *foundThis;
+
+public:
+    ThisCollectJob(QV4::ExecutionEngine *engine, QV4DataCollector *collector, int frameNr,
+                   bool *foundThis);
+    void run();
+    bool myRun();
+};
+
+class ExceptionCollectJob: public QV4::Debugging::Debugger::Job
+{
+    QV4::ExecutionEngine *engine;
+    QV4DataCollector *collector;
+
+public:
+    ExceptionCollectJob(QV4::ExecutionEngine *engine, QV4DataCollector *collector);
+    void run();
+};
+
+QT_END_NAMESPACE
+
+#endif // QV4DATACOLLECTOR_H