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debugger: pimpl JSDebuggerAgent

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This commit is contained in:
hjk
2010-10-27 18:44:25 +02:00
parent 6025791feb
commit a3b24d233c
2 changed files with 124 additions and 87 deletions
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167
share/qtcreator/qml/qmljsdebugger/jsdebuggeragent.cpp
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@@ -53,32 +53,17 @@
namespace QmlJSDebugger {
class SetupExecEnv
enum JSDebuggerState
{
public:
SetupExecEnv(JSDebuggerAgent *a)
: agent(a),
previousState(a->state),
hadException(a->engine()->hasUncaughtException())
{
agent->state = JSDebuggerAgent::Stopped;
}
~SetupExecEnv() {
if (!hadException && agent->engine()->hasUncaughtException())
agent->engine()->clearExceptions();
agent->state = previousState;
}
private:
JSDebuggerAgent *agent;
JSDebuggerAgent::State previousState;
bool hadException;
NoState,
SteppingIntoState,
SteppingOverState,
SteppingOutState,
StoppedState
};
class JSAgentWatchData
struct JSAgentWatchData
{
public:
QByteArray exp;
QByteArray name;
QByteArray value;
@@ -93,9 +78,8 @@ QDataStream &operator<<(QDataStream &s, const JSAgentWatchData &data)
<< data.type << data.hasChildren << data.objectId;
}
class JSAgentStackData
struct JSAgentStackData
{
public:
QByteArray functionName;
QByteArray fileName;
qint32 lineNumber;
@@ -106,6 +90,60 @@ QDataStream &operator<<(QDataStream &s, const JSAgentStackData &data)
return s << data.functionName << data.fileName << data.lineNumber;
}
typedef JSAgentStackData JSBreakpointData;
class JSDebuggerAgentPrivate
{
public:
JSDebuggerAgentPrivate(JSDebuggerAgent *q)
: q(q), state(NoState)
{}
void continueExec();
void recordKnownObjects(const QList<JSAgentWatchData> &);
QList<JSAgentWatchData> getLocals(QScriptContext *);
void positionChange(qint64 scriptId, int lineNumber, int columnNumber);
QScriptEngine *engine() { return q->engine(); }
void stopped();
void messageReceived(const QByteArray &message);
void sendMessage(const QByteArray &message) { q->sendMessage(message); }
public:
JSDebuggerAgent *q;
JSDebuggerState state;
int stepDepth;
int stepCount;
QEventLoop loop;
QHash <qint64, QString> filenames;
QSet< QPair<QString, qint32> > breakpointList;
QStringList watchExpressions;
QSet<qint64> knownObjectIds;
};
class SetupExecEnv
{
public:
SetupExecEnv(JSDebuggerAgentPrivate *a)
: agent(a),
previousState(a->state),
hadException(a->engine()->hasUncaughtException())
{
agent->state = StoppedState;
}
~SetupExecEnv()
{
if (!hadException && agent->engine()->hasUncaughtException())
agent->engine()->clearExceptions();
agent->state = previousState;
}
private:
JSDebuggerAgentPrivate *agent;
JSDebuggerState previousState;
bool hadException;
};
static JSAgentWatchData fromScriptValue(const QString &expression,
const QScriptValue &value)
@@ -194,20 +232,21 @@ static QList<JSAgentWatchData> expandObject(const QScriptValue &object)
return result;
}
void JSDebuggerAgent::recordKnownObjects(const QList<JSAgentWatchData>& list)
void JSDebuggerAgentPrivate::recordKnownObjects(const QList<JSAgentWatchData>& list)
{
foreach (const JSAgentWatchData &data, list)
knownObjectIds << data.objectId;
}
QList<JSAgentWatchData> JSDebuggerAgent::getLocals(QScriptContext *ctx)
QList<JSAgentWatchData> JSDebuggerAgentPrivate::getLocals(QScriptContext *ctx)
{
QList<JSAgentWatchData> locals;
if (ctx) {
QScriptValue activationObject = ctx->activationObject();
QScriptValue thisObject = ctx->thisObject();
locals = expandObject(activationObject);
if (thisObject.isObject() && thisObject.objectId() != engine()->globalObject().objectId())
if (thisObject.isObject()
&& thisObject.objectId() != engine()->globalObject().objectId())
locals.prepend(fromScriptValue("this", thisObject));
recordKnownObjects(locals);
knownObjectIds << activationObject.objectId();
@@ -221,30 +260,33 @@ QList<JSAgentWatchData> JSDebuggerAgent::getLocals(QScriptContext *ctx)
\a backend.
*/
JSDebuggerAgent::JSDebuggerAgent(QScriptEngine *engine)
: QDeclarativeDebugService("JSDebugger"), QScriptEngineAgent(engine)
, state(NoState)
: QDeclarativeDebugService("JSDebugger")
, QScriptEngineAgent(engine)
, d(new JSDebuggerAgentPrivate(this))
{}
JSDebuggerAgent::JSDebuggerAgent(QDeclarativeEngine *engine)
: QDeclarativeDebugService("JSDebugger")
, QScriptEngineAgent(QDeclarativeDebugHelper::getScriptEngine(engine))
, state(NoState)
, d(new JSDebuggerAgentPrivate(this))
{}
/*!
Destroys this QScriptDebuggerAgent.
*/
JSDebuggerAgent::~JSDebuggerAgent()
{}
{
delete d;
}
/*!
\reimp
*/
void JSDebuggerAgent::scriptLoad(qint64 id, const QString & program,
const QString &fileName, int )
void JSDebuggerAgent::scriptLoad(qint64 id, const QString &program,
const QString &fileName, int)
{
Q_UNUSED(program);
filenames.insert(id, QUrl(fileName).toLocalFile());
d->filenames.insert(id, QUrl(fileName).toLocalFile());
}
/*!
@@ -252,7 +294,7 @@ void JSDebuggerAgent::scriptLoad(qint64 id, const QString & program,
*/
void JSDebuggerAgent::scriptUnload(qint64 id)
{
filenames.remove(id);
d->filenames.remove(id);
}
/*!
@@ -275,7 +317,7 @@ void JSDebuggerAgent::contextPop()
void JSDebuggerAgent::functionEntry(qint64 scriptId)
{
Q_UNUSED(scriptId);
stepDepth++;
d->stepDepth++;
}
/*!
@@ -285,26 +327,38 @@ void JSDebuggerAgent::functionExit(qint64 scriptId, const QScriptValue &returnVa
{
Q_UNUSED(scriptId);
Q_UNUSED(returnValue);
stepDepth--;
d->stepDepth--;
}
/*!
\reimp
*/
void JSDebuggerAgent::positionChange(qint64 scriptId,
int lineNumber, int columnNumber)
void JSDebuggerAgent::positionChange
(qint64 scriptId, int lineNumber, int columnNumber)
{
d->positionChange(scriptId, lineNumber, columnNumber);
}
void JSDebuggerAgentPrivate::positionChange
(qint64 scriptId, int lineNumber, int columnNumber)
{
Q_UNUSED(columnNumber);
if (state == Stopped)
if (state == StoppedState)
return; //no re-entrency
// check breakpoints
if (!breakpointList.isEmpty()) {
QHash<qint64, QString>::const_iterator it = filenames.constFind(scriptId);
QScriptContext *ctx = engine()->currentContext();
QScriptContextInfo info(ctx);
if (it == filenames.constEnd()) {
// It is possible that the scripts are loaded before the agent is attached
QString filename = QUrl(QScriptContextInfo(engine()->currentContext()).fileName()).toLocalFile();
QString filename = QUrl(info.fileName()).toLocalFile();
JSAgentStackData frame;
frame.functionName = info.functionName().toUtf8();
QPair<QString, qint32> key = qMakePair(filename, lineNumber);
it = filenames.insert(scriptId, filename);
}
@@ -317,7 +371,7 @@ void JSDebuggerAgent::positionChange(qint64 scriptId,
switch (state) {
case NoState:
case Stopped:
case StoppedState:
// Do nothing
break;
case SteppingOutState:
@@ -347,7 +401,7 @@ void JSDebuggerAgent::exceptionThrow(qint64 scriptId,
Q_UNUSED(hasHandler);
// qDebug() << Q_FUNC_INFO << exception.toString() << hasHandler;
#if 0 //sometimes, we get exceptions that we should just ignore.
if (!hasHandler && state != Stopped)
if (!hasHandler && state != StoppedState)
stopped(true, exception);
#endif
}
@@ -355,30 +409,32 @@ void JSDebuggerAgent::exceptionThrow(qint64 scriptId,
/*!
\reimp
*/
void JSDebuggerAgent::exceptionCatch(qint64 scriptId,
const QScriptValue &exception)
void JSDebuggerAgent::exceptionCatch(qint64 scriptId, const QScriptValue &exception)
{
Q_UNUSED(scriptId);
Q_UNUSED(exception);
}
bool JSDebuggerAgent::supportsExtension(QScriptEngineAgent::Extension extension) const
bool JSDebuggerAgent::supportsExtension(Extension extension) const
{
return extension == QScriptEngineAgent::DebuggerInvocationRequest;
}
QVariant JSDebuggerAgent::extension(QScriptEngineAgent::Extension extension, const QVariant& argument)
QVariant JSDebuggerAgent::extension(Extension extension, const QVariant &argument)
{
if (extension == QScriptEngineAgent::DebuggerInvocationRequest) {
stopped();
d->stopped();
return QVariant();
}
return QScriptEngineAgent::extension(extension, argument);
}
void JSDebuggerAgent::messageReceived(const QByteArray &message)
{
d->messageReceived(message);
}
void JSDebuggerAgent::messageReceived(const QByteArray& message)
void JSDebuggerAgentPrivate::messageReceived(const QByteArray &message)
{
QDataStream ds(message);
QByteArray command;
@@ -484,13 +540,16 @@ void JSDebuggerAgent::messageReceived(const QByteArray& message)
qDebug() << Q_FUNC_INFO << "Unknown command" << command;
}
QDeclarativeDebugService::messageReceived(message);
q->baseMessageReceived(message);
}
void JSDebuggerAgent::stopped(bool becauseOfException, const QScriptValue &exception)
void JSDebuggerAgentPrivate::stopped()
{
bool becauseOfException = false;
const QScriptValue &exception = QScriptValue();
knownObjectIds.clear();
state = Stopped;
state = StoppedState;
QList<JSAgentStackData> backtrace;
for (QScriptContext* ctx = engine()->currentContext(); ctx; ctx = ctx->parentContext()) {
@@ -544,7 +603,7 @@ void JSDebuggerAgent::stopped(bool becauseOfException, const QScriptValue &excep
loop.exec(QEventLoop::ExcludeUserInputEvents);
}
void JSDebuggerAgent::continueExec()
void JSDebuggerAgentPrivate::continueExec()
{
loop.quit();
}