bool ExecutionContext::deleteProperty(String *name)
{
Scope scope(this);
bool hasWith = false;
for (ExecutionContext *ctx = this; ctx; ctx = ctx->d()->outer) {
if (ctx->d()->type == Type_WithContext) {
hasWith = true;
WithContext *w = static_cast<WithContext *>(ctx);
if (w->d()->withObject->hasProperty(name))
return w->d()->withObject->deleteProperty(name);
} else if (ctx->d()->type == Type_CatchContext) {
CatchContext *c = static_cast<CatchContext *>(ctx);
if (c->d()->exceptionVarName->isEqualTo(name))
return false;
} else if (ctx->d()->type >= Type_CallContext) {
CallContext *c = static_cast<CallContext *>(ctx);
FunctionObject *f = c->d()->function;
if (f->needsActivation() || hasWith) {
uint index = f->function()->internalClass->find(name);
if (index < UINT_MAX)
// ### throw in strict mode?
return false;
}
if (c->d()->activation && c->d()->activation->hasProperty(name))
return c->d()->activation->deleteProperty(name);
} else if (ctx->d()->type == Type_GlobalContext) {
GlobalContext *g = static_cast<GlobalContext *>(ctx);
if (g->d()->global->hasProperty(name))
return g->d()->global->deleteProperty(name);
}
}
if (d()->strictMode)
throwSyntaxError(QStringLiteral("Can't delete property %1").arg(name->toQString()));
return true;
}
ReturnedValue ExecutionContext::getPropertyAndBase(String *name, Object *&base)
{
Scope scope(this);
ScopedValue v(scope);
base = (Object *)0;
name->makeIdentifier();
if (name->equals(d()->engine->id_this.getPointer()))
return d()->callData->thisObject.asReturnedValue();
bool hasWith = false;
bool hasCatchScope = false;
for (ExecutionContext *ctx = this; ctx; ctx = ctx->d()->outer) {
if (ctx->d()->type == Type_WithContext) {
Object *w = static_cast<WithContext *>(ctx)->d()->withObject;
hasWith = true;
bool hasProperty = false;
v = w->get(name, &hasProperty);
if (hasProperty) {
base = w;
return v.asReturnedValue();
}
continue;
}
else if (ctx->d()->type == Type_CatchContext) {
hasCatchScope = true;
CatchContext *c = static_cast<CatchContext *>(ctx);
if (c->d()->exceptionVarName->isEqualTo(name))
return c->d()->exceptionValue.asReturnedValue();
}
else if (ctx->d()->type >= Type_CallContext) {
QV4::CallContext *c = static_cast<CallContext *>(ctx);
FunctionObject *f = c->d()->function;
if (f->function() && (f->needsActivation() || hasWith || hasCatchScope)) {
uint index = f->function()->internalClass->find(name);
if (index < UINT_MAX) {
if (index < c->d()->function->formalParameterCount())
return c->d()->callData->args[c->d()->function->formalParameterCount() - index - 1].asReturnedValue();
return c->d()->locals[index - c->d()->function->formalParameterCount()].asReturnedValue();
}
}
if (c->d()->activation) {
bool hasProperty = false;
v = c->d()->activation->get(name, &hasProperty);
if (hasProperty) {
if (ctx->d()->type == Type_QmlContext)
base = c->d()->activation;
return v.asReturnedValue();
}
}
if (f->function() && f->function()->isNamedExpression()
&& name->equals(f->function()->name()))
return c->d()->function->asReturnedValue();
}
else if (ctx->d()->type == Type_GlobalContext) {
GlobalContext *g = static_cast<GlobalContext *>(ctx);
bool hasProperty = false;
v = g->d()->global->get(name, &hasProperty);
if (hasProperty)
return v.asReturnedValue();
}
}
ScopedValue n(scope, name);
return throwReferenceError(n);
}