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);
}
RefPtr<CodeBlock> ScriptExecutable::newCodeBlockFor(
CodeSpecializationKind kind, JSFunction* function, JSScope* scope, JSObject*& exception)
{
VM* vm = scope->vm();
ASSERT(vm->heap.isDeferred());
ASSERT(startColumn() != UINT_MAX);
ASSERT(endColumn() != UINT_MAX);
if (classInfo() == EvalExecutable::info()) {
EvalExecutable* executable = jsCast<EvalExecutable*>(this);
RELEASE_ASSERT(kind == CodeForCall);
RELEASE_ASSERT(!executable->m_evalCodeBlock);
RELEASE_ASSERT(!function);
return adoptRef(new EvalCodeBlock(
executable, executable->m_unlinkedEvalCodeBlock.get(), scope,
executable->source().provider()));
}
if (classInfo() == ProgramExecutable::info()) {
ProgramExecutable* executable = jsCast<ProgramExecutable*>(this);
RELEASE_ASSERT(kind == CodeForCall);
RELEASE_ASSERT(!executable->m_programCodeBlock);
RELEASE_ASSERT(!function);
return adoptRef(new ProgramCodeBlock(
executable, executable->m_unlinkedProgramCodeBlock.get(), scope,
executable->source().provider(), executable->source().startColumn()));
}
RELEASE_ASSERT(classInfo() == FunctionExecutable::info());
RELEASE_ASSERT(function);
FunctionExecutable* executable = jsCast<FunctionExecutable*>(this);
RELEASE_ASSERT(!executable->codeBlockFor(kind));
JSGlobalObject* globalObject = scope->globalObject();
ParserError error;
DebuggerMode debuggerMode = globalObject->hasDebugger() ? DebuggerOn : DebuggerOff;
ProfilerMode profilerMode = globalObject->hasProfiler() ? ProfilerOn : ProfilerOff;
UnlinkedFunctionCodeBlock* unlinkedCodeBlock =
executable->m_unlinkedExecutable->codeBlockFor(*vm, executable->m_source, kind, debuggerMode, profilerMode, error, executable->isArrowFunction());
recordParse(executable->m_unlinkedExecutable->features(), executable->m_unlinkedExecutable->hasCapturedVariables(), firstLine(), lastLine(), startColumn(), endColumn());
if (!unlinkedCodeBlock) {
exception = vm->throwException(
globalObject->globalExec(),
error.toErrorObject(globalObject, executable->m_source));
return nullptr;
}
SourceProvider* provider = executable->source().provider();
unsigned sourceOffset = executable->source().startOffset();
unsigned startColumn = executable->source().startColumn();
return adoptRef(new FunctionCodeBlock(
executable, unlinkedCodeBlock, scope, provider, sourceOffset, startColumn));
}