debugger: start second shot at Qml debugging

src/plugins/debugger/qml/qmlengine.h

@@ -0,0 +1,168 @@
+/**************************************************************************
+**
+** 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.
+**
+**************************************************************************/
+
+#ifndef DEBUGGER_QMLENGINE_H
+#define DEBUGGER_QMLENGINE_H
+
+#include <QtCore/QByteArray>
+#include <QtCore/QHash>
+#include <QtCore/QMap>
+#include <QtCore/QObject>
+#include <QtCore/QPoint>
+#include <QtCore/QProcess>
+#include <QtCore/QQueue>
+#include <QtCore/QSet>
+#include <QtCore/QTimer>
+#include <QtCore/QVariant>
+
+#include <QtNetwork/QAbstractSocket>
+
+QT_BEGIN_NAMESPACE
+class QTcpSocket;
+QT_END_NAMESPACE
+
+#include "idebuggerengine.h"
+#include "debuggermanager.h"
+
+namespace Debugger {
+namespace Internal {
+
+class ScriptAgent;
+class WatchData;
+class QmlResponse;
+
+class QmlEngine : public IDebuggerEngine
+{
+    Q_OBJECT
+
+public:
+    explicit QmlEngine(DebuggerManager *parent);
+    ~QmlEngine();
+
+private:
+    // IDebuggerEngine implementation
+    void executeStep();
+    void executeStepOut();
+    void executeNext();
+    void executeStepI();
+    void executeNextI();
+
+    void shutdown();
+    void setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor, int cursorPos);
+    void startDebugger(const DebuggerStartParametersPtr &sp);
+    void exitDebugger();
+
+    void continueInferior();
+    Q_SLOT void runInferior();
+    void interruptInferior();
+
+    void executeRunToLine(const QString &fileName, int lineNumber);
+    void executeRunToFunction(const QString &functionName);
+    void executeJumpToLine(const QString &fileName, int lineNumber);
+
+    void activateFrame(int index);
+    void selectThread(int index);
+
+    void attemptBreakpointSynchronization();
+
+    void assignValueInDebugger(const QString &expr, const QString &value);
+    void executeDebuggerCommand(const QString & command);
+
+    void loadSymbols(const QString &moduleName);
+    void loadAllSymbols();
+    void requestModuleSymbols(const QString &moduleName);
+    void reloadModules();
+    void reloadRegisters() {}
+    void reloadSourceFiles() {}
+    void reloadFullStack() {}
+
+    bool supportsThreads() const { return true; }
+    void maybeBreakNow(bool byFunction);
+    void updateWatchData(const WatchData &data);
+    void updateLocals();
+    void updateSubItem(const WatchData &data);
+
+    Q_SLOT void socketConnected();
+    Q_SLOT void socketDisconnected();
+    Q_SLOT void socketError(QAbstractSocket::SocketError);
+    Q_SLOT void socketReadyRead();
+
+    void handleResponse(const QByteArray &ba);
+    void handleRunControlSuspend(const QmlResponse &response, const QVariant &);
+    void handleRunControlGetChildren(const QmlResponse &response, const QVariant &);
+    void handleSysMonitorGetChildren(const QmlResponse &response, const QVariant &);
+
+private:
+    Q_SLOT void startDebugging();
+
+    typedef void (QmlEngine::*QmlCommandCallback)
+        (const QmlResponse &record, const QVariant &cookie);
+
+    struct QmlCommand
+    {
+        QmlCommand() : flags(0), token(-1), callback(0), callbackName(0) {}
+
+        QString toString() const;
+
+        int flags;
+        int token;
+        QmlCommandCallback callback;
+        const char *callbackName;
+        QByteArray command;
+        QVariant cookie;
+    };
+
+    void postCommand(const QByteArray &cmd,
+        QmlCommandCallback callback = 0, const char *callbackName = 0);
+    void sendCommandNow(const QmlCommand &command);
+    void debugMessage(const QString &msg);
+
+    QHash<int, QmlCommand> m_cookieForToken;
+
+    QQueue<QmlCommand> m_sendQueue;
+    
+    // timer based congestion control. does not seem to work well.
+    void enqueueCommand(const QmlCommand &command);
+    Q_SLOT void handleSendTimer();
+    int m_congestion;
+    QTimer m_sendTimer;
+
+    // synchrounous communication
+    void acknowledgeResult();
+    int m_inAir;
+
+    QTcpSocket *m_socket;
+    QByteArray m_inbuffer;
+    QList<QByteArray> m_services;
+};
+
+} // namespace Internal
+} // namespace Debugger
+
+#endif // DEBUGGER_QMLENGINE_H