void ScriptDebuggerPrivate::exceptionThrow(qint64 /*scriptId*/,
const QScriptValue &exception,
bool hasHandler)
{
if (!hasHandler) {
errorMessage(QString::fromLatin1("uncaught exception: %0").arg(exception.toString()));
QScriptContext *ctx = engine()->currentContext();
int lineNumber = QScriptContextInfo(ctx).lineNumber();
ScriptInfo *info = scriptInfo(ctx);
QString lineText = info ? info->lineText(lineNumber) : QString("(no source text available)");
message(QString::fromLatin1("%0\t%1").arg(lineNumber).arg(lineText));
interactive();
}
}
void ScriptDebuggerPrivate::positionChange(qint64 scriptId,
int lineNumber, int /*columnNumber*/)
{
ScriptInfo *info = 0;
bool enterInteractiveMode = false;
if (m_bpManager->hasBreakpoints()) {
// check if we hit a breakpoint
info = m_scripts.value(scriptId);
QScriptContext *ctx = engine()->currentContext();
QScriptContextInfo ctxInfo(ctx);
QScriptValue callee = ctx->callee();
// try fileName:lineNumber
int bpid = m_bpManager->findBreakpoint(info->fileName(), lineNumber);
if ((bpid != -1) && m_bpManager->isBreakpointEnabled(bpid)) {
message(QString::fromLatin1("Breakpoint %0 at %1:%2")
.arg(bpid + 1).arg(info->fileName()).arg(lineNumber));
if (m_bpManager->isBreakpointSingleShot(bpid))
m_bpManager->removeBreakpoint(bpid);
}
if (bpid == -1) {
// try function
bpid = m_bpManager->findBreakpoint(callee);
if ((bpid != -1) && m_bpManager->isBreakpointEnabled(bpid)) {
message(QString::fromLatin1("Breakpoint %0, %1()")
.arg(bpid + 1).arg(ctxInfo.functionName()));
if (m_bpManager->isBreakpointSingleShot(bpid))
m_bpManager->removeBreakpoint(bpid);
}
}
if ((bpid == -1) && !ctxInfo.functionName().isEmpty()) {
// try functionName:fileName
bpid = m_bpManager->findBreakpoint(ctxInfo.functionName(), ctxInfo.fileName());
if ((bpid != -1) && m_bpManager->isBreakpointEnabled(bpid)) {
message(QString::fromLatin1("Breakpoint %0, %1():%2").arg(bpid + 1)
.arg(ctxInfo.functionName()).arg(ctxInfo.fileName()));
if (m_bpManager->isBreakpointSingleShot(bpid))
m_bpManager->removeBreakpoint(bpid);
}
}
enterInteractiveMode = (bpid != -1);
}
switch (mode()) {
case Run:
break;
case StepInto:
enterInteractiveMode = true;
break;
case StepOver:
enterInteractiveMode = enterInteractiveMode || (m_stepDepth <= 0);
break;
}
if (enterInteractiveMode) {
if (!info)
info = m_scripts.value(scriptId);
Q_ASSERT(info);
message(QString::fromLatin1("%0\t%1").arg(lineNumber).arg(info->lineText(lineNumber)));
interactive();
}
}
bool ScriptDebuggerPrivate::executeCommand(const QString &command, const QStringList &args)
{
if (command == QLatin1String("c")
|| command == QLatin1String("continue")) {
setMode(Run);
return true;
} else if (command == QLatin1String("s")
|| command == QLatin1String("step")) {
setMode(StepInto);
return true;
} else if (command == QLatin1String("n")
|| command == QLatin1String("next")) {
setMode(StepOver);
m_stepDepth = 0;
return true;
} else if (command == QLatin1String("f")
|| command == QLatin1String("frame")) {
bool ok = false;
int index = args.value(0).toInt(&ok);
if (ok) {
if (index < 0 || index >= frameCount()) {
errorMessage("No such frame.");
} else {
setCurrentFrameIndex(index);
QScriptContext *ctx = currentFrameContext();
message(QString::fromLatin1("#%0 %1").arg(index).arg(ctx->toString()));
}
}
} else if (command == QLatin1String("bt")
|| command == QLatin1String("backtrace")) {
QScriptContext *ctx = engine()->currentContext();
int index = -1;
while (ctx) {
++index;
QString line = ctx->toString();
message(QString::fromLatin1("#%0 %1").arg(index).arg(line));
ctx = ctx->parentContext();
}
} else if (command == QLatin1String("up")) {
int index = currentFrameIndex() + 1;
if (index == frameCount()) {
errorMessage(QString::fromLatin1("Initial frame selected; you cannot go up."));
} else {
setCurrentFrameIndex(index);
QScriptContext *ctx = currentFrameContext();
message(QString::fromLatin1("#%0 %1").arg(index).arg(ctx->toString()));
}
} else if (command == QLatin1String("down")) {
int index = currentFrameIndex() - 1;
if (index < 0) {
errorMessage(QString::fromLatin1("Bottom (innermost) frame selected; you cannot go down."));
} else {
setCurrentFrameIndex(index);
QScriptContext *ctx = currentFrameContext();
message(QString::fromLatin1("#%0 %1").arg(index).arg(ctx->toString()));
}
} else if (command == QLatin1String("b")
|| command == QLatin1String("break")) {
QString str = args.value(0);
int colonIndex = str.indexOf(QLatin1Char(':'));
if (colonIndex != -1) {
// filename:line form
QString fileName = str.left(colonIndex);
int lineNumber = str.mid(colonIndex+1).toInt();
int id = m_bpManager->setBreakpoint(fileName, lineNumber);
message(QString::fromLatin1("Breakpoint %0 at %1, line %2.").arg(id+1).arg(fileName).arg(lineNumber));
} else {
// function
QScriptValue fun = engine()->globalObject().property(str);
if (fun.isFunction()) {
int id = m_bpManager->setBreakpoint(fun);
message(QString::fromLatin1("Breakpoint %0 at %1().").arg(id+1).arg(str));
}
}
} else if (command == QLatin1String("d")
|| command == QLatin1String("delete")) {
int id = args.value(0).toInt() - 1;
m_bpManager->removeBreakpoint(id);
} else if (command == QLatin1String("disable")) {
int id = args.value(0).toInt() - 1;
m_bpManager->setBreakpointEnabled(id, false);
} else if (command == QLatin1String("enable")) {
int id = args.value(0).toInt() - 1;
m_bpManager->setBreakpointEnabled(id, true);
} else if (command == QLatin1String("list")) {
QScriptContext *ctx = currentFrameContext();
ScriptInfo *progInfo = scriptInfo(ctx);
if (!progInfo) {
errorMessage("No source text available for this frame.");
} else {
QScriptContextInfo ctxInfo(ctx);
bool ok;
int line = args.value(0).toInt(&ok);
if (ok) {
line = qMax(1, line - 5);
} else {
line = listLineNumber();
if (line == -1)
line = qMax(progInfo->lineNumber(), ctxInfo.lineNumber() - 5);
}
for (int i = line; i < line + 10; ++i) {
message(QString::fromLatin1("%0\t%1").arg(i).arg(progInfo->lineText(i)));
}
setListLineNumber(line + 10);
}
} else if (command == QLatin1String("info")) {
if (args.size() < 1) {
} else {
QString what = args.value(0);
if (what == QLatin1String("locals")) {
QScriptValueIterator it(currentFrameContext()->activationObject());
while (it.hasNext()) {
it.next();
QString line;
line.append(it.name());
line.append(QLatin1String(" = "));
line.append(safeValueToString(it.value()));
message(line);
}
}
}
} else if (command == QLatin1String("help")) {
message("continue - continue execution\n"
"step - step into statement\n"
"next - step over statement\n"
"list - show where you are\n"
"\n"
"break - set breakpoint\n"
"delete - remove breakpoint\n"
"disable - disable breakpoint\n"
"enable - enable breakpoint\n"
"\n"
"backtrace - show backtrace\n"
"up - one frame up\n"
"down - one frame down\n"
"frame - set frame\n"
"\n"
"info locals - show local variables");
} else {
errorMessage(QString::fromLatin1("Undefined command \"%0\". Try \"help\".")
.arg(command));
}
return false;
}
