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JSDebugger: Break on Exception

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The debugger breaks on Javascript exception. The error message is
printed on the ScriptConsole and the relevant code is marked with
a wavy underline.

Change-Id: I5e6f603430c3b8a0db450d1e8c821714ec0140ab
Reviewed-on: http://codereview.qt-project.org/4276
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>
This commit is contained in:
Aurindam Jana
2011-09-06 17:03:16 +02:00
parent 57ab1cb249
commit 06723f8df9
3 changed files with 190 additions and 68 deletions
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223
src/plugins/debugger/qml/qmlv8debuggerclient.cpp
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@@ -44,6 +44,10 @@
#include <extensionsystem/pluginmanager.h>
#include <utils/qtcassert.h>
#include <coreplugin/editormanager/editormanager.h>
#include <texteditor/basetexteditor.h>
#include <QtGui/QTextBlock>
#include <QtCore/QVariant>
#include <QtCore/QFileInfo>
#include <QtGui/QTextDocument>
@@ -51,20 +55,31 @@
#define INITIALPARAMS "seq" << ':' << ++d->sequence << ',' << "type" << ':' << "request"
using namespace Core;
using namespace Json;
namespace Debugger {
namespace Internal {
struct ExceptionInfo
{
int sourceLine;
QString filePath;
QString errorMessage;
};
class QmlV8DebuggerClientPrivate
{
public:
explicit QmlV8DebuggerClientPrivate(QmlV8DebuggerClient *) :
sequence(0), ping(0), engine(0)
handleException(false),
sequence(0),
ping(0),
engine(0)
{
}
bool handleException;
int sequence;
int ping;
QmlEngine *engine;
@@ -73,6 +88,7 @@ public:
QHash<int,QByteArray> locals;
QHash<int,QByteArray> watches;
QByteArray frames;
QScopedPointer<ExceptionInfo> exceptionInfo;
};
QmlV8DebuggerClient::QmlV8DebuggerClient(QmlJsDebugClient::QDeclarativeDebugConnection* client)
@@ -86,7 +102,7 @@ QmlV8DebuggerClient::~QmlV8DebuggerClient()
delete d;
}
QByteArray QmlV8DebuggerClient::packMessage(QByteArray& message)
QByteArray QmlV8DebuggerClient::packMessage(const QByteArray &message)
{
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
@@ -95,15 +111,21 @@ QByteArray QmlV8DebuggerClient::packMessage(QByteArray& message)
return reply;
}
void QmlV8DebuggerClient::executeStep()
void QmlV8DebuggerClient::breakOnException(Exceptions exceptionsType, bool enabled)
{
//TODO: Have to deal with NoExceptions
QByteArray request;
JsonInputStream(request) << '{' << INITIALPARAMS ;
JsonInputStream(request) << ',' << "command" << ':' << "continue";
JsonInputStream(request) << ',' << "command" << ':' << "setexceptionbreak";
JsonInputStream(request) << ',' << "arguments" << ':';
JsonInputStream(request) << '{' << "stepaction" << ':' << "in";
if (exceptionsType == AllExceptions)
JsonInputStream(request) << '{' << "type" << ':' << "all";
else if (exceptionsType == UncaughtExceptions)
JsonInputStream(request) << '{' << "type" << ':' << "uncaught";
JsonInputStream(request) << ',' << "enabled" << ':' << enabled;
JsonInputStream(request) << '}';
JsonInputStream(request) << '}';
@@ -112,71 +134,134 @@ void QmlV8DebuggerClient::executeStep()
sendMessage(packMessage(request));
}
void QmlV8DebuggerClient::storeExceptionInformation(const QByteArray &message)
{
JsonValue response(message);
JsonValue body = response.findChild("body");
d->exceptionInfo.reset(new ExceptionInfo);
d->exceptionInfo->sourceLine = body.findChild("sourceLine").toVariant().toInt();
QUrl fileUrl(body.findChild("script").findChild("name").toVariant().toString());
d->exceptionInfo->filePath = d->engine->toFileInProject(fileUrl);
d->exceptionInfo->errorMessage = body.findChild("exception").findChild("text").toVariant().toString();
}
void QmlV8DebuggerClient::handleException()
{
EditorManager *editorManager = EditorManager::instance();
QList<IEditor *> openedEditors = editorManager->openedEditors();
// set up the format for the errors
QTextCharFormat errorFormat;
errorFormat.setUnderlineStyle(QTextCharFormat::WaveUnderline);
errorFormat.setUnderlineColor(Qt::red);
foreach (IEditor *editor, openedEditors) {
if (editor->file()->fileName() == d->exceptionInfo->filePath) {
TextEditor::BaseTextEditorWidget *ed = qobject_cast<TextEditor::BaseTextEditorWidget *>(editor->widget());
if (!ed)
continue;
QList<QTextEdit::ExtraSelection> selections;
QTextEdit::ExtraSelection sel;
sel.format = errorFormat;
QTextCursor c(ed->document()->findBlockByNumber(d->exceptionInfo->sourceLine));
const QString text = c.block().text();
for (int i = 0; i < text.size(); ++i) {
if (! text.at(i).isSpace()) {
c.setPosition(c.position() + i);
break;
}
}
c.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
sel.cursor = c;
sel.format.setToolTip(d->exceptionInfo->errorMessage);
selections.append(sel);
ed->setExtraSelections(TextEditor::BaseTextEditorWidget::DebuggerExceptionSelection, selections);
d->engine->showMessage(d->exceptionInfo->errorMessage, ScriptConsoleOutput);
}
}
//Delete the info even if the code hasnt been highlighted
d->exceptionInfo.reset();
}
void QmlV8DebuggerClient::clearExceptionSelection()
{
//Check if break was due to exception
if (d->handleException) {
EditorManager *editorManager = EditorManager::instance();
QList<IEditor *> openedEditors = editorManager->openedEditors();
QList<QTextEdit::ExtraSelection> selections;
foreach (IEditor *editor, openedEditors) {
TextEditor::BaseTextEditorWidget *ed = qobject_cast<TextEditor::BaseTextEditorWidget *>(editor->widget());
if (!ed)
continue;
ed->setExtraSelections(TextEditor::BaseTextEditorWidget::DebuggerExceptionSelection, selections);
}
d->handleException = false;
}
}
void QmlV8DebuggerClient::continueDebugging(StepAction type)
{
clearExceptionSelection();
QByteArray request;
JsonInputStream(request) << '{' << INITIALPARAMS ;
JsonInputStream(request) << ',' << "command" << ':' << "continue";
if (type != Continue) {
JsonInputStream(request) << ',' << "arguments" << ':';
switch (type) {
case In: JsonInputStream(request) << '{' << "stepaction" << ':' << "in";
break;
case Out: JsonInputStream(request) << '{' << "stepaction" << ':' << "out";
break;
case Next: JsonInputStream(request) << '{' << "stepaction" << ':' << "next";
break;
default:break;
}
JsonInputStream(request) << '}';
}
JsonInputStream(request) << '}';
sendMessage(packMessage(request));
}
void QmlV8DebuggerClient::executeStep()
{
continueDebugging(In);
}
void QmlV8DebuggerClient::executeStepOut()
{
QByteArray request;
JsonInputStream(request) << '{' << INITIALPARAMS ;
JsonInputStream(request) << ',' << "command" << ':' << "continue";
JsonInputStream(request) << ',' << "arguments" << ':';
JsonInputStream(request) << '{' << "stepaction" << ':' << "out";
JsonInputStream(request) << '}';
JsonInputStream(request) << '}';
sendMessage(packMessage(request));
continueDebugging(Out);
}
void QmlV8DebuggerClient::executeNext()
{
QByteArray request;
JsonInputStream(request) << '{' << INITIALPARAMS ;
JsonInputStream(request) << ',' << "command" << ':' << "continue";
JsonInputStream(request) << ',' << "arguments" << ':';
JsonInputStream(request) << '{' << "stepaction" << ':' << "next";
JsonInputStream(request) << '}';
JsonInputStream(request) << '}';
sendMessage(packMessage(request));
continueDebugging(Next);
}
void QmlV8DebuggerClient::executeStepI()
{
QByteArray request;
JsonInputStream(request) << '{' << INITIALPARAMS ;
JsonInputStream(request) << ',' << "command" << ':' << "continue";
JsonInputStream(request) << ',' << "arguments" << ':';
JsonInputStream(request) << '{' << "stepaction" << ':' << "in";
JsonInputStream(request) << '}';
JsonInputStream(request) << '}';
sendMessage(packMessage(request));
continueDebugging(In);
}
void QmlV8DebuggerClient::continueInferior()
{
QByteArray request;
JsonInputStream(request) << '{' << INITIALPARAMS ;
JsonInputStream(request) << ',' << "command" << ':' << "continue";
JsonInputStream(request) << '}';
sendMessage(packMessage(request));
continueDebugging(Continue);
}
void QmlV8DebuggerClient::interruptInferior()
@@ -194,6 +279,10 @@ void QmlV8DebuggerClient::interruptInferior()
void QmlV8DebuggerClient::startSession()
{
//Set up Exception Handling first
//TODO: For now we enable breaks for all exceptions
breakOnException(AllExceptions, true);
QByteArray request;
JsonInputStream(request) << '{' << INITIALPARAMS ;
@@ -206,6 +295,8 @@ void QmlV8DebuggerClient::startSession()
void QmlV8DebuggerClient::endSession()
{
clearExceptionSelection();
QByteArray request;
JsonInputStream(request) << '{' << INITIALPARAMS ;
@@ -418,12 +509,17 @@ void QmlV8DebuggerClient::messageReceived(const QByteArray &data)
if (event == "break") {
d->engine->inferiorSpontaneousStop();
listBreakpoints();
} else if (event == "exception") {
d->handleException = true;
d->engine->inferiorSpontaneousStop();
storeExceptionInformation(response);
backtrace();
}
}
}
}
void QmlV8DebuggerClient::setStackFrames(QByteArray &message)
void QmlV8DebuggerClient::setStackFrames(const QByteArray &message)
{
d->frames = message;
JsonValue response(message);
@@ -468,6 +564,9 @@ void QmlV8DebuggerClient::setStackFrames(QByteArray &message)
d->engine->gotoLocation(ideStackFrames.value(0));
}
if (d->handleException) {
handleException();
}
}
void QmlV8DebuggerClient::setLocals(int frameIndex)
@@ -533,7 +632,7 @@ void QmlV8DebuggerClient::setLocals(int frameIndex)
}
}
void QmlV8DebuggerClient::expandLocal(QByteArray &message)
void QmlV8DebuggerClient::expandLocal(const QByteArray &message)
{
JsonValue response(message);
@@ -553,7 +652,7 @@ void QmlV8DebuggerClient::expandLocal(QByteArray &message)
}
}
void QmlV8DebuggerClient::setExpression(QByteArray &message)
void QmlV8DebuggerClient::setExpression(const QByteArray &message)
{
JsonValue response(message);
JsonValue body = response.findChild("body");
@@ -569,7 +668,7 @@ void QmlV8DebuggerClient::setExpression(QByteArray &message)
//TODO: For watch point
}
void QmlV8DebuggerClient::updateBreakpoints(QByteArray &message)
void QmlV8DebuggerClient::updateBreakpoints(const QByteArray &message)
{
JsonValue response(message);
@@ -600,7 +699,7 @@ void QmlV8DebuggerClient::updateBreakpoints(QByteArray &message)
}
}
void QmlV8DebuggerClient::setPropertyValue(JsonValue &refs, JsonValue &property, QByteArray &prepend)
void QmlV8DebuggerClient::setPropertyValue(const JsonValue &refs, const JsonValue &property, const QByteArray &prepend)
{
WatchData data;
data.exp = property.findChild("name").toVariant().toByteArray();