static bool
CheckArgumentsWithinEval(JSContext *cx, Parser<FullParseHandler> &parser, HandleFunction fun)
{
if (fun->hasRest()) {
// It's an error to use |arguments| in a function that has a rest
// parameter.
parser.report(ParseError, false, nullptr, JSMSG_ARGUMENTS_AND_REST);
return false;
}
// Force construction of arguments objects for functions that use
// |arguments| within an eval.
RootedScript script(cx, fun->getOrCreateScript(cx));
if (!script)
return false;
if (script->argumentsHasVarBinding()) {
if (!JSScript::argumentsOptimizationFailed(cx, script))
return false;
}
// It's an error to use |arguments| in a legacy generator expression.
if (script->isGeneratorExp() && script->isLegacyGenerator()) {
parser.report(ParseError, false, nullptr, JSMSG_BAD_GENEXP_BODY, js_arguments_str);
return false;
}
return true;
}
JS_GetFunctionScript(JSContext *cx, HandleFunction fun)
{
if (fun->isNative())
return nullptr;
if (fun->isInterpretedLazy()) {
AutoCompartment funCompartment(cx, fun);
JSScript *script = fun->getOrCreateScript(cx);
if (!script)
MOZ_CRASH();
return script;
}
return fun->nonLazyScript();
}
