JSTrapStatus
js::ScriptDebugPrologue(JSContext *cx, AbstractFramePtr frame)
{
JS_ASSERT_IF(frame.isStackFrame(), frame.asStackFrame() == cx->fp());
if (frame.isFramePushedByExecute()) {
if (JSInterpreterHook hook = cx->runtime->debugHooks.executeHook)
frame.setHookData(hook(cx, Jsvalify(frame), IsTopFrameConstructing(cx, frame),
true, 0, cx->runtime->debugHooks.executeHookData));
} else {
if (JSInterpreterHook hook = cx->runtime->debugHooks.callHook)
frame.setHookData(hook(cx, Jsvalify(frame), IsTopFrameConstructing(cx, frame),
true, 0, cx->runtime->debugHooks.callHookData));
}
RootedValue rval(cx);
JSTrapStatus status = Debugger::onEnterFrame(cx, &rval);
switch (status) {
case JSTRAP_CONTINUE:
break;
case JSTRAP_THROW:
cx->setPendingException(rval);
break;
case JSTRAP_ERROR:
cx->clearPendingException();
break;
case JSTRAP_RETURN:
frame.setReturnValue(rval);
break;
default:
JS_NOT_REACHED("bad Debugger::onEnterFrame JSTrapStatus value");
}
return status;
}
void
js::SetReturnValueForClosingGenerator(JSContext* cx, AbstractFramePtr frame)
{
CallObject& callObj = frame.callObj();
// Get the generator object stored on the scope chain and close it.
Shape* shape = callObj.lookup(cx, cx->names().dotGenerator);
GeneratorObject& genObj = callObj.getSlot(shape->slot()).toObject().as<GeneratorObject>();
genObj.setClosed();
// Return value is already set in GeneratorThrowOrClose.
if (genObj.is<StarGeneratorObject>())
return;
// Legacy generator .close() always returns |undefined|.
MOZ_ASSERT(genObj.is<LegacyGeneratorObject>());
frame.setReturnValue(UndefinedValue());
}
JSTrapStatus
js::DebugExceptionUnwind(JSContext *cx, AbstractFramePtr frame, jsbytecode *pc)
{
JS_ASSERT(cx->compartment()->debugMode());
if (!cx->runtime()->debugHooks.throwHook && cx->compartment()->getDebuggees().empty())
return JSTRAP_CONTINUE;
/* Call debugger throw hook if set. */
RootedValue rval(cx);
JSTrapStatus status = Debugger::onExceptionUnwind(cx, &rval);
if (status == JSTRAP_CONTINUE) {
if (JSThrowHook handler = cx->runtime()->debugHooks.throwHook) {
RootedScript script(cx, frame.script());
status = handler(cx, script, pc, rval.address(), cx->runtime()->debugHooks.throwHookData);
}
}
switch (status) {
case JSTRAP_ERROR:
cx->clearPendingException();
break;
case JSTRAP_RETURN:
cx->clearPendingException();
frame.setReturnValue(rval);
break;
case JSTRAP_THROW:
cx->setPendingException(rval);
break;
case JSTRAP_CONTINUE:
break;
default:
MOZ_ASSUME_UNREACHABLE("Invalid trap status");
}
return status;
}
bool
js::GeneratorThrowOrClose(JSContext* cx, AbstractFramePtr frame, Handle<GeneratorObject*> genObj,
HandleValue arg, uint32_t resumeKind)
{
if (resumeKind == GeneratorObject::THROW) {
cx->setPendingException(arg);
genObj->setRunning();
} else {
MOZ_ASSERT(resumeKind == GeneratorObject::CLOSE);
if (genObj->is<StarGeneratorObject>()) {
MOZ_ASSERT(arg.isObject());
frame.setReturnValue(arg);
} else {
MOZ_ASSERT(arg.isUndefined());
}
cx->setPendingException(MagicValue(JS_GENERATOR_CLOSING));
genObj->setClosing();
}
return false;
}
void
js::SetReturnValueForClosingGenerator(JSContext *cx, AbstractFramePtr frame)
{
CallObject &callObj = frame.callObj();
// Get the generator object stored on the scope chain and close it.
Shape *shape = callObj.lookup(cx, cx->names().dotGenerator);
GeneratorObject &genObj = callObj.getSlot(shape->slot()).toObject().as<GeneratorObject>();
genObj.setClosed();
Value v;
if (genObj.is<StarGeneratorObject>()) {
// The return value is stored in the .genrval slot.
shape = callObj.lookup(cx, cx->names().dotGenRVal);
v = callObj.getSlot(shape->slot());
} else {
// Legacy generator .close() always returns |undefined|.
MOZ_ASSERT(genObj.is<LegacyGeneratorObject>());
v = UndefinedValue();
}
frame.setReturnValue(v);
}
JSTrapStatus
js::ScriptDebugPrologue(JSContext *cx, AbstractFramePtr frame, jsbytecode *pc)
{
JS_ASSERT_IF(frame.isInterpreterFrame(), frame.asInterpreterFrame() == cx->interpreterFrame());
if (!frame.script()->selfHosted()) {
JSAbstractFramePtr jsframe(frame.raw(), pc);
if (frame.isFramePushedByExecute()) {
if (JSInterpreterHook hook = cx->runtime()->debugHooks.executeHook)
frame.setHookData(hook(cx, jsframe, IsTopFrameConstructing(cx, frame),
true, 0, cx->runtime()->debugHooks.executeHookData));
} else {
if (JSInterpreterHook hook = cx->runtime()->debugHooks.callHook)
frame.setHookData(hook(cx, jsframe, IsTopFrameConstructing(cx, frame),
true, 0, cx->runtime()->debugHooks.callHookData));
}
}
RootedValue rval(cx);
JSTrapStatus status = Debugger::onEnterFrame(cx, frame, &rval);
switch (status) {
case JSTRAP_CONTINUE:
break;
case JSTRAP_THROW:
cx->setPendingException(rval);
break;
case JSTRAP_ERROR:
cx->clearPendingException();
break;
case JSTRAP_RETURN:
frame.setReturnValue(rval);
break;
default:
MOZ_ASSUME_UNREACHABLE("bad Debugger::onEnterFrame JSTrapStatus value");
}
return status;
}
