JSValue JSJavaScriptCallFrame::scopeType(ExecState* exec)
{
if (!impl().scopeChain())
return jsUndefined();
if (!exec->argument(0).isInt32())
return jsUndefined();
int index = exec->argument(0).asInt32();
DebuggerScope* scopeChain = impl().scopeChain();
DebuggerScope::iterator end = scopeChain->end();
bool foundLocalScope = false;
for (DebuggerScope::iterator iter = scopeChain->begin(); iter != end; ++iter) {
DebuggerScope* scope = iter.get();
if (!foundLocalScope && scope->isFunctionOrEvalScope()) {
// First function scope is the local scope, each successive one is a closure.
if (!index)
return jsNumber(JSJavaScriptCallFrame::LOCAL_SCOPE);
foundLocalScope = true;
}
if (!index) {
if (scope->isCatchScope())
return jsNumber(JSJavaScriptCallFrame::CATCH_SCOPE);
if (scope->isFunctionNameScope())
return jsNumber(JSJavaScriptCallFrame::FUNCTION_NAME_SCOPE);
if (scope->isWithScope())
return jsNumber(JSJavaScriptCallFrame::WITH_SCOPE);
if (scope->isGlobalScope()) {
ASSERT(++iter == end);
return jsNumber(JSJavaScriptCallFrame::GLOBAL_SCOPE);
}
ASSERT(scope->isFunctionOrEvalScope());
return jsNumber(JSJavaScriptCallFrame::CLOSURE_SCOPE);
}
--index;
}
ASSERT_NOT_REACHED();
return jsUndefined();
}
JSValue JSJavaScriptCallFrame::scopeChain(ExecState* exec) const
{
if (!impl().scopeChain())
return jsNull();
DebuggerScope* scopeChain = impl().scopeChain();
DebuggerScope::iterator iter = scopeChain->begin();
DebuggerScope::iterator end = scopeChain->end();
// We must always have something in the scope chain.
ASSERT(iter != end);
MarkedArgumentBuffer list;
do {
list.append(iter.get());
++iter;
} while (iter != end);
return constructArray(exec, nullptr, globalObject(), list);
}