static JSValue retrieveCallerFunction(ExecState* exec, JSFunction* functionObj)
{
StackIterator iter = exec->find(functionObj, skipOverBoundFunctions);
if (iter != exec->end())
++iter;
return iter != exec->end() && iter->callee() ? iter->callee() : jsNull();
}
void debugPrintCallFrame(JSC::CallFrame* callFrame)
{
if (!callFrame)
return;
StackIterator iter = callFrame->begin();
iter->print(2);
}
Result BinaryMathOperator::operator()(Stack& stack, StackOperator::Ptr ofThis) {
Number::Ptr first;
Number::Ptr second;
StackIterator iter = stack.begin();
iter >> first >> second;
// Defer stack.popAfter() until after evaluation
if(!iter) {
return iter.getResult();
}
// Do the math
float result = 0.0;
const OpInfo* info = opInfoMap[op];
if(nullptr == info) {
// Internal error.... Not sure what to do.
return Result({"Internal Error: Missing BinaryMathOperator."});
}
stack.popAfter(iter);
Number::Ptr item = Number::create(info->getFunction()(first->getValue(), second->getValue()));
(*item)(stack, item);
return Result({Error::Ok});
}
void debugPrintStack(JSC::CallFrame* topCallFrame)
{
if (!topCallFrame)
return;
DebugPrintStackFunctor functor;
StackIterator iter = topCallFrame->begin();
iter.iterate(functor);
}
PassRefPtr<ScriptCallStack> createScriptCallStack(size_t maxStackSize, bool emptyIsAllowed)
{
Vector<ScriptCallFrame> frames;
if (JSC::ExecState* exec = JSMainThreadExecState::currentState()) {
CallFrame* frame = exec->vm().topCallFrame;
for (StackIterator iter = frame->begin(); iter != frame->end() && maxStackSize--; ++iter) {
unsigned line;
unsigned column;
iter->computeLineAndColumn(line, column);
frames.append(ScriptCallFrame(iter->functionName(), iter->sourceURL(), line, column));
}
}
if (frames.isEmpty() && !emptyIsAllowed) {
// No frames found. It may happen in the case where
// a bound function is called from native code for example.
// Fallback to setting lineNumber to 0, and source and function name to "undefined".
frames.append(ScriptCallFrame("undefined", "undefined", 0, 0));
}
return ScriptCallStack::create(frames);
}
PassRefPtr<ScriptCallStack> createScriptCallStack(JSC::ExecState* exec, size_t maxStackSize)
{
Vector<ScriptCallFrame> frames;
ASSERT(exec);
CallFrame* frame = exec->vm().topCallFrame;
StackIterator iter = frame->begin();
if (iter.numberOfFrames() > 1)
++iter;
for (; iter != frame->end() && maxStackSize--; ++iter) {
// This early exit is necessary to maintain our old behaviour
// but the stack trace we produce now is complete and handles all
// ways in which code may be running
if (!iter->callee() && frames.size())
break;
unsigned line;
unsigned column;
iter->computeLineAndColumn(line, column);
frames.append(ScriptCallFrame(iter->functionName(), iter->sourceURL(), line, column));
}
return ScriptCallStack::create(frames);
}
static JSValue retrieveArguments(ExecState* exec, JSFunction* functionObj)
{
StackIterator iter = exec->find(functionObj);
return iter != exec->end() ? JSValue(iter->arguments()) : jsNull();
}
StackIterator::Status operator()(StackIterator& iter)
{
iter->print(2);
return StackIterator::Continue;
}