// FIXME: Use the enumeration cache.
EncodedJSValue JSC_HOST_CALL objectConstructorKeys(ExecState* exec)
{
if (!exec->argument(0).isObject())
return throwVMError(exec, createTypeError(exec, ASCIILiteral("Requested keys of a value that is not an object.")));
PropertyNameArray properties(exec);
asObject(exec->argument(0))->methodTable(exec->vm())->getOwnPropertyNames(asObject(exec->argument(0)), exec, properties, ExcludeDontEnumProperties);
JSArray* keys = constructEmptyArray(exec, 0);
size_t numProperties = properties.size();
for (size_t i = 0; i < numProperties; i++)
keys->push(exec, jsOwnedString(exec, properties[i].string()));
return JSValue::encode(keys);
}
// FIXME: Use the enumeration cache.
EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyNames(ExecState* exec)
{
if (!exec->argument(0).isObject())
return throwVMError(exec, createTypeError(exec, "Requested property names of a value that is not an object."));
PropertyNameArray properties(exec);
asObject(exec->argument(0))->getOwnPropertyNames(exec, properties, IncludeDontEnumProperties);
JSArray* names = constructEmptyArray(exec);
size_t numProperties = properties.size();
for (size_t i = 0; i < numProperties; i++)
names->push(exec, jsOwnedString(exec, properties[i].ustring()));
return JSValue::encode(names);
}
JSArray* ShadowChicken::functionsOnStack(ExecState* exec)
{
JSArray* result = constructEmptyArray(exec, 0);
iterate(
exec->vm(), exec,
[&] (const Frame& frame) -> bool {
result->push(exec, frame.callee);
return true;
});
return result;
}
JSArray* ShadowChicken::functionsOnStack(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSArray* result = constructEmptyArray(exec, 0);
RETURN_IF_EXCEPTION(scope, nullptr);
iterate(
vm, exec,
[&] (const Frame& frame) -> bool {
result->push(exec, frame.callee);
RELEASE_ASSERT(!scope.exception()); // This function is only called from tests.
return true;
});
return result;
}
JSValue Compilation::toJS(ExecState* exec) const
{
JSObject* result = constructEmptyObject(exec);
result->putDirect(exec->vm(), exec->propertyNames().bytecodesID, jsNumber(m_bytecodes->id()));
result->putDirect(exec->vm(), exec->propertyNames().compilationKind, jsString(exec, String::fromUTF8(toCString(m_kind))));
JSArray* profiledBytecodes = constructEmptyArray(exec, 0);
for (unsigned i = 0; i < m_profiledBytecodes.size(); ++i)
profiledBytecodes->putDirectIndex(exec, i, m_profiledBytecodes[i].toJS(exec));
result->putDirect(exec->vm(), exec->propertyNames().profiledBytecodes, profiledBytecodes);
JSArray* descriptions = constructEmptyArray(exec, 0);
for (unsigned i = 0; i < m_descriptions.size(); ++i)
descriptions->putDirectIndex(exec, i, m_descriptions[i].toJS(exec));
result->putDirect(exec->vm(), exec->propertyNames().descriptions, descriptions);
JSArray* counters = constructEmptyArray(exec, 0);
for (auto it = m_counters.begin(), end = m_counters.end(); it != end; ++it) {
JSObject* counterEntry = constructEmptyObject(exec);
counterEntry->putDirect(exec->vm(), exec->propertyNames().origin, it->key.toJS(exec));
counterEntry->putDirect(exec->vm(), exec->propertyNames().executionCount, jsNumber(it->value->count()));
counters->push(exec, counterEntry);
}
result->putDirect(exec->vm(), exec->propertyNames().counters, counters);
JSArray* exitSites = constructEmptyArray(exec, 0);
for (unsigned i = 0; i < m_osrExitSites.size(); ++i)
exitSites->putDirectIndex(exec, i, m_osrExitSites[i].toJS(exec));
result->putDirect(exec->vm(), exec->propertyNames().osrExitSites, exitSites);
JSArray* exits = constructEmptyArray(exec, 0);
for (unsigned i = 0; i < m_osrExits.size(); ++i)
exits->putDirectIndex(exec, i, m_osrExits[i].toJS(exec));
result->putDirect(exec->vm(), exec->propertyNames().osrExits, exits);
result->putDirect(exec->vm(), exec->propertyNames().numInlinedGetByIds, jsNumber(m_numInlinedGetByIds));
result->putDirect(exec->vm(), exec->propertyNames().numInlinedPutByIds, jsNumber(m_numInlinedPutByIds));
result->putDirect(exec->vm(), exec->propertyNames().numInlinedCalls, jsNumber(m_numInlinedCalls));
result->putDirect(exec->vm(), exec->propertyNames().jettisonReason, jsString(exec, String::fromUTF8(toCString(m_jettisonReason))));
if (!m_additionalJettisonReason.isNull())
result->putDirect(exec->vm(), exec->propertyNames().additionalJettisonReason, jsString(exec, String::fromUTF8(m_additionalJettisonReason)));
return result;
}
JSValue Compilation::toJS(ExecState* exec) const
{
JSObject* result = constructEmptyObject(exec);
result->putDirect(exec->globalData(), exec->propertyNames().bytecodesID, jsNumber(m_bytecodes->id()));
result->putDirect(exec->globalData(), exec->propertyNames().compilationKind, jsString(exec, String::fromUTF8(toCString(m_kind))));
JSArray* profiledBytecodes = constructEmptyArray(exec, 0);
for (unsigned i = 0; i < m_profiledBytecodes.size(); ++i)
profiledBytecodes->putDirectIndex(exec, i, m_profiledBytecodes[i].toJS(exec));
result->putDirect(exec->globalData(), exec->propertyNames().profiledBytecodes, profiledBytecodes);
JSArray* descriptions = constructEmptyArray(exec, 0);
for (unsigned i = 0; i < m_descriptions.size(); ++i)
descriptions->putDirectIndex(exec, i, m_descriptions[i].toJS(exec));
result->putDirect(exec->globalData(), exec->propertyNames().descriptions, descriptions);
JSArray* counters = constructEmptyArray(exec, 0);
HashMap<OriginStack, OwnPtr<ExecutionCounter> >::const_iterator end = m_counters.end();
for (HashMap<OriginStack, OwnPtr<ExecutionCounter> >::const_iterator iter = m_counters.begin(); iter != end; ++iter) {
JSObject* counterEntry = constructEmptyObject(exec);
counterEntry->putDirect(exec->globalData(), exec->propertyNames().origin, iter->key.toJS(exec));
counterEntry->putDirect(exec->globalData(), exec->propertyNames().executionCount, jsNumber(iter->value->count()));
counters->push(exec, counterEntry);
}
result->putDirect(exec->globalData(), exec->propertyNames().counters, counters);
JSArray* exitSites = constructEmptyArray(exec, 0);
for (unsigned i = 0; i < m_osrExitSites.size(); ++i)
exitSites->putDirectIndex(exec, i, m_osrExitSites[i].toJS(exec));
result->putDirect(exec->globalData(), exec->propertyNames().osrExitSites, exitSites);
JSArray* exits = constructEmptyArray(exec, 0);
for (unsigned i = 0; i < m_osrExits.size(); ++i)
exits->putDirectIndex(exec, i, m_osrExits[i].toJS(exec));
result->putDirect(exec->globalData(), exec->propertyNames().osrExits, exits);
return result;
}
JSValue LiteralParser::parseArray()
{
StackGuard guard(this);
if (!guard.isSafe())
return abortParse();
JSArray* array = constructEmptyArray(m_exec);
while (true) {
m_lexer.next();
JSValue value = parseExpression();
if (m_aborted)
return JSValue();
if (!value)
break;
array->push(m_exec, value);
if (m_lexer.currentToken().type != TokComma)
break;
}
if (m_lexer.currentToken().type != TokRBracket)
return abortParse();
m_lexer.next();
return array;
}
JSValue collectMatches(VM& vm, ExecState* exec, JSString* string, const String& s, RegExpConstructor* constructor, RegExp* regExp, const FixEndFunc& fixEnd)
{
auto scope = DECLARE_THROW_SCOPE(vm);
MatchResult result = constructor->performMatch(vm, regExp, string, s, 0);
if (!result)
return jsNull();
static unsigned maxSizeForDirectPath = 100000;
JSArray* array = constructEmptyArray(exec, nullptr);
if (UNLIKELY(vm.exception()))
return jsUndefined();
auto iterate = [&] () {
size_t end = result.end;
size_t length = end - result.start;
array->push(exec, JSRopeString::createSubstringOfResolved(vm, string, result.start, length));
if (!length)
end = fixEnd(end);
result = constructor->performMatch(vm, regExp, string, s, end);
};
do {
if (array->length() >= maxSizeForDirectPath) {
// First do a throw-away match to see how many matches we'll get.
unsigned matchCount = 0;
MatchResult savedResult = result;
do {
if (array->length() + matchCount >= MAX_STORAGE_VECTOR_LENGTH) {
throwOutOfMemoryError(exec, scope);
return jsUndefined();
}
size_t end = result.end;
matchCount++;
if (result.empty())
end = fixEnd(end);
// Using RegExpConstructor::performMatch() instead of calling RegExp::match()
// directly is a surprising but profitable choice: it means that when we do OOM, we
// will leave the cached result in the state it ought to have had just before the
// OOM! On the other hand, if this loop concludes that the result is small enough,
// then the iterate() loop below will overwrite the cached result anyway.
result = constructor->performMatch(vm, regExp, string, s, end);
} while (result);
// OK, we have a sensible number of matches. Now we can create them for reals.
result = savedResult;
do
iterate();
while (result);
return array;
}
iterate();
} while (result);
return array;
}
JSValue Compilation::toJS(ExecState* exec) const
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* result = constructEmptyObject(exec);
RETURN_IF_EXCEPTION(scope, { });
result->putDirect(vm, vm.propertyNames->bytecodesID, jsNumber(m_bytecodes->id()));
result->putDirect(vm, vm.propertyNames->compilationKind, jsString(exec, String::fromUTF8(toCString(m_kind))));
JSArray* profiledBytecodes = constructEmptyArray(exec, 0);
RETURN_IF_EXCEPTION(scope, { });
for (unsigned i = 0; i < m_profiledBytecodes.size(); ++i) {
auto value = m_profiledBytecodes[i].toJS(exec);
RETURN_IF_EXCEPTION(scope, { });
profiledBytecodes->putDirectIndex(exec, i, value);
RETURN_IF_EXCEPTION(scope, { });
}
result->putDirect(vm, vm.propertyNames->profiledBytecodes, profiledBytecodes);
JSArray* descriptions = constructEmptyArray(exec, 0);
RETURN_IF_EXCEPTION(scope, { });
for (unsigned i = 0; i < m_descriptions.size(); ++i) {
auto value = m_descriptions[i].toJS(exec);
RETURN_IF_EXCEPTION(scope, { });
descriptions->putDirectIndex(exec, i, value);
RETURN_IF_EXCEPTION(scope, { });
}
result->putDirect(vm, vm.propertyNames->descriptions, descriptions);
JSArray* counters = constructEmptyArray(exec, 0);
RETURN_IF_EXCEPTION(scope, { });
for (auto it = m_counters.begin(), end = m_counters.end(); it != end; ++it) {
JSObject* counterEntry = constructEmptyObject(exec);
RETURN_IF_EXCEPTION(scope, { });
auto value = it->key.toJS(exec);
RETURN_IF_EXCEPTION(scope, { });
counterEntry->putDirect(vm, vm.propertyNames->origin, value);
counterEntry->putDirect(vm, vm.propertyNames->executionCount, jsNumber(it->value->count()));
counters->push(exec, counterEntry);
RETURN_IF_EXCEPTION(scope, { });
}
result->putDirect(vm, vm.propertyNames->counters, counters);
JSArray* exitSites = constructEmptyArray(exec, 0);
RETURN_IF_EXCEPTION(scope, { });
for (unsigned i = 0; i < m_osrExitSites.size(); ++i) {
auto value = m_osrExitSites[i].toJS(exec);
RETURN_IF_EXCEPTION(scope, { });
exitSites->putDirectIndex(exec, i, value);
RETURN_IF_EXCEPTION(scope, { });
}
result->putDirect(vm, vm.propertyNames->osrExitSites, exitSites);
JSArray* exits = constructEmptyArray(exec, 0);
RETURN_IF_EXCEPTION(scope, { });
for (unsigned i = 0; i < m_osrExits.size(); ++i) {
exits->putDirectIndex(exec, i, m_osrExits[i].toJS(exec));
RETURN_IF_EXCEPTION(scope, { });
}
result->putDirect(vm, vm.propertyNames->osrExits, exits);
result->putDirect(vm, vm.propertyNames->numInlinedGetByIds, jsNumber(m_numInlinedGetByIds));
result->putDirect(vm, vm.propertyNames->numInlinedPutByIds, jsNumber(m_numInlinedPutByIds));
result->putDirect(vm, vm.propertyNames->numInlinedCalls, jsNumber(m_numInlinedCalls));
result->putDirect(vm, vm.propertyNames->jettisonReason, jsString(exec, String::fromUTF8(toCString(m_jettisonReason))));
if (!m_additionalJettisonReason.isNull())
result->putDirect(vm, vm.propertyNames->additionalJettisonReason, jsString(exec, String::fromUTF8(m_additionalJettisonReason)));
result->putDirect(vm, vm.propertyNames->uid, m_uid.toJS(exec));
return result;
}
static JSValue performPromiseAll(ExecState* exec, JSValue iterator, JSValue C, JSPromiseDeferred* deferred)
{
JSObject* thisObject = asObject(C);
VM& vm = exec->vm();
// 6. Let 'values' be the result of calling ArrayCreate(0).
JSArray* values = constructEmptyArray(exec, nullptr, thisObject->globalObject());
// 7. Let 'countdownHolder' be Record { [[Countdown]]: 0 }.
NumberObject* countdownHolder = constructNumber(exec, thisObject->globalObject(), JSValue(0));
// 8. Let 'index' be 0.
unsigned index = 0;
// 9. Repeat.
do {
// i. Let 'next' be the result of calling IteratorStep(iterator).
JSValue next = iteratorStep(exec, iterator);
if (exec->hadException())
return jsUndefined();
// iii. If 'next' is false,
if (next.isFalse()) {
// a. If 'index' is 0,
if (!index) {
// a. Let 'resolveResult' be the result of calling the [[Call]] internal method
// of deferred.[[Resolve]] with undefined as thisArgument and a List containing
// values as argumentsList.
performDeferredResolve(exec, deferred, values);
// b. ReturnIfAbrupt(resolveResult).
if (exec->hadException())
return jsUndefined();
}
// b. Return deferred.[[Promise]].
return deferred->promise();
}
// iv. Let 'nextValue' be the result of calling IteratorValue(next).
// v. RejectIfAbrupt(nextValue, deferred).
JSValue nextValue = iteratorValue(exec, next);
if (exec->hadException())
return jsUndefined();
values->push(exec, jsUndefined());
// vi. Let 'nextPromise' be the result of calling Invoke(C, "resolve", (nextValue)).
JSValue resolveFunction = C.get(exec, vm.propertyNames->resolve);
if (exec->hadException())
return jsUndefined();
CallData resolveFunctionCallData;
CallType resolveFunctionCallType = getCallData(resolveFunction, resolveFunctionCallData);
if (resolveFunctionCallType == CallTypeNone) {
throwTypeError(exec);
return jsUndefined();
}
MarkedArgumentBuffer resolveFunctionArguments;
resolveFunctionArguments.append(nextValue);
JSValue nextPromise = call(exec, resolveFunction, resolveFunctionCallType, resolveFunctionCallData, C, resolveFunctionArguments);
// vii. RejectIfAbrupt(nextPromise, deferred).
if (exec->hadException())
return jsUndefined();
// viii. Let 'countdownFunction' be a new built-in function object as defined in Promise.all Countdown Functions.
JSFunction* countdownFunction = createPromiseAllCountdownFunction(vm, thisObject->globalObject());
// ix. Set the [[Index]] internal slot of 'countdownFunction' to 'index'.
countdownFunction->putDirect(vm, vm.propertyNames->indexPrivateName, JSValue(index));
// x. Set the [[Values]] internal slot of 'countdownFunction' to 'values'.
countdownFunction->putDirect(vm, vm.propertyNames->valuesPrivateName, values);
// xi. Set the [[Deferred]] internal slot of 'countdownFunction' to 'deferred'.
countdownFunction->putDirect(vm, vm.propertyNames->deferredPrivateName, deferred);
// xii. Set the [[CountdownHolder]] internal slot of 'countdownFunction' to 'countdownHolder'.
countdownFunction->putDirect(vm, vm.propertyNames->countdownHolderPrivateName, countdownHolder);
// xiii. Let 'result' be the result of calling Invoke(nextPromise, "then", (countdownFunction, deferred.[[Reject]])).
JSValue thenFunction = nextPromise.get(exec, vm.propertyNames->then);
if (exec->hadException())
return jsUndefined();
CallData thenFunctionCallData;
CallType thenFunctionCallType = getCallData(thenFunction, thenFunctionCallData);
if (thenFunctionCallType == CallTypeNone) {
throwTypeError(exec);
return jsUndefined();
}
MarkedArgumentBuffer thenFunctionArguments;
thenFunctionArguments.append(countdownFunction);
thenFunctionArguments.append(deferred->reject());
call(exec, thenFunction, thenFunctionCallType, thenFunctionCallData, nextPromise, thenFunctionArguments);
// xiv. RejectIfAbrupt(result, deferred).
if (exec->hadException())
return jsUndefined();
// xv. Set index to index + 1.
index++;
// xvi. Set countdownHolder.[[Countdown]] to countdownHolder.[[Countdown]] + 1.
uint32_t newCountdownValue = countdownHolder->internalValue().asUInt32() + 1;
countdownHolder->setInternalValue(vm, JSValue(newCountdownValue));
} while (true);
ASSERT_NOT_REACHED();
return jsUndefined();
}
JSObject* addErrorInfo(ExecState* exec, JSObject* error, int line, const SourceCode& source)
{
JSGlobalData* globalData = &exec->globalData();
addErrorInfo(globalData, error, line, source);
UStringBuilder stackString;
JSArray* stackArray = constructEmptyArray(exec);
CallFrame* frame = exec;
stackString.append(error->toString(exec));
bool functionKnown;
ReturnAddressPtr pc;
while (!frame->hasHostCallFrameFlag()) {
CodeBlock* codeBlock = frame->codeBlock();
JSObject* arrayItem = constructEmptyObject(exec);
stackString.append("\n at ");
JSObject* callee = frame->callee();
UString functionName;
if (callee && callee->inherits(&JSFunction::s_info)) {
functionName = asFunction(callee)->calculatedDisplayName(exec);
functionKnown = !functionName.isEmpty();
} else {
functionKnown = false;
}
if (functionKnown) {
stackString.append(functionName);
stackString.append(" (");
arrayItem->putWithAttributes(
globalData, Identifier(globalData, functionPropertyName),
jsString(globalData, functionName), ReadOnly | DontDelete
);
}
UString sourceURL = codeBlock->ownerExecutable()->sourceURL();
arrayItem->putWithAttributes(
globalData, Identifier(globalData, sourceURLPropertyName),
jsString(globalData, sourceURL), ReadOnly | DontDelete
);
stackString.append(sourceURL);
stackString.append(":");
if (frame != exec) {
line = codeBlock->lineNumberForBytecodeOffset(codeBlock->bytecodeOffset(pc));
}
arrayItem->putWithAttributes(
globalData, Identifier(globalData, linePropertyName),
jsNumber(line), ReadOnly | DontDelete
);
stackString.append(UString::number(line));
if (functionKnown) {
stackString.append(")");
}
stackArray->push(exec, JSValue(arrayItem));
pc = frame->returnPC();
frame = frame->callerFrame();
}
error->putWithAttributes(
globalData, Identifier(globalData, stackPropertyName),
jsString(globalData, stackString.toUString()), ReadOnly | DontDelete
);
error->putWithAttributes(
globalData, Identifier(globalData, "stackArray"),
stackArray, ReadOnly | DontDelete
);
return error;
}