EncodedJSValue JSC_HOST_CALL functionProtoFuncToString(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue thisValue = exec->thisValue();
if (thisValue.inherits(JSFunction::info())) {
JSFunction* function = jsCast<JSFunction*>(thisValue);
if (function->isHostOrBuiltinFunction()) {
scope.release();
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(vm), "() {\n [native code]\n}"));
}
FunctionExecutable* executable = function->jsExecutable();
if (executable->isClass()) {
StringView classSource = executable->classSource().view();
return JSValue::encode(jsString(exec, classSource.toStringWithoutCopying()));
}
if (thisValue.inherits(JSAsyncFunction::info())) {
String functionHeader = executable->isArrowFunction() ? "async " : "async function ";
StringView source = executable->source().provider()->getRange(
executable->parametersStartOffset(),
executable->parametersStartOffset() + executable->source().length());
return JSValue::encode(jsMakeNontrivialString(exec, functionHeader, function->name(vm), source));
}
String functionHeader = executable->isArrowFunction() ? "" : "function ";
StringView source = executable->source().provider()->getRange(
executable->parametersStartOffset(),
executable->parametersStartOffset() + executable->source().length());
scope.release();
return JSValue::encode(jsMakeNontrivialString(exec, functionHeader, function->name(vm), source));
}
if (thisValue.inherits(InternalFunction::info())) {
InternalFunction* function = asInternalFunction(thisValue);
scope.release();
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(), "() {\n [native code]\n}"));
}
if (thisValue.isObject()) {
JSObject* object = asObject(thisValue);
if (object->inlineTypeFlags() & TypeOfShouldCallGetCallData) {
CallData callData;
if (object->methodTable(vm)->getCallData(object, callData) != CallType::None) {
if (auto* classInfo = object->classInfo()) {
scope.release();
return JSValue::encode(jsMakeNontrivialString(exec, "function ", classInfo->className, "() {\n [native code]\n}"));
}
}
}
}
return throwVMTypeError(exec, scope);
}
EncodedJSValue JSC_HOST_CALL functionProtoFuncToString(ExecState* exec)
{
JSValue thisValue = exec->thisValue();
if (thisValue.inherits(JSFunction::info())) {
JSFunction* function = jsCast<JSFunction*>(thisValue);
if (function->isHostOrBuiltinFunction()) {
String name;
if (JSBoundFunction* boundFunction = jsDynamicCast<JSBoundFunction*>(function))
name = boundFunction->toStringName(exec);
else
name = function->name(exec);
return JSValue::encode(jsMakeNontrivialString(exec, "function ", name, "() {\n [native code]\n}"));
}
FunctionExecutable* executable = function->jsExecutable();
String functionHeader = executable->isArrowFunction() ? "" : "function ";
StringView source = executable->source().provider()->getRange(
executable->parametersStartOffset(),
executable->parametersStartOffset() + executable->source().length());
return JSValue::encode(jsMakeNontrivialString(exec, functionHeader, function->name(exec), source));
}
if (thisValue.inherits(InternalFunction::info())) {
InternalFunction* function = asInternalFunction(thisValue);
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(exec), "() {\n [native code]\n}"));
}
return throwVMTypeError(exec);
}
EncodedJSValue JSC_HOST_CALL functionProtoFuncToString(ExecState* exec)
{
JSValue thisValue = exec->thisValue();
if (thisValue.inherits(JSFunction::info())) {
JSFunction* function = jsCast<JSFunction*>(thisValue);
if (function->isHostOrBuiltinFunction())
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(exec), "() {\n [native code]\n}"));
FunctionExecutable* executable = function->jsExecutable();
String source = executable->source().provider()->getRange(
executable->parametersStartOffset(),
executable->typeProfilingEndOffset() + 1); // Type profiling end offset is the character before the '}'.
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(exec), source));
}
if (thisValue.inherits(InternalFunction::info())) {
InternalFunction* function = asInternalFunction(thisValue);
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(exec), "() {\n [native code]\n}"));
}
return throwVMTypeError(exec);
}