MapConstructor.cpp [plain text]
#include "config.h"
#include "MapConstructor.h"
#include "IteratorOperations.h"
#include "JSCInlines.h"
#include "JSMap.h"
#include "MapPrototype.h"
namespace JSC {
const ClassInfo MapConstructor::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(MapConstructor) };
void MapConstructor::finishCreation(VM& vm, MapPrototype* mapPrototype, GetterSetter* speciesSymbol)
{
Base::finishCreation(vm, 0, "Map"_s, PropertyAdditionMode::WithoutStructureTransition);
putDirectWithoutTransition(vm, vm.propertyNames->prototype, mapPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectNonIndexAccessorWithoutTransition(vm, vm.propertyNames->speciesSymbol, speciesSymbol, PropertyAttribute::Accessor | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum);
}
static JSC_DECLARE_HOST_FUNCTION(callMap);
static JSC_DECLARE_HOST_FUNCTION(constructMap);
MapConstructor::MapConstructor(VM& vm, Structure* structure)
: Base(vm, structure, callMap, constructMap)
{
}
JSC_DEFINE_HOST_FUNCTION(callMap, (JSGlobalObject* globalObject, CallFrame*))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(globalObject, scope, "Map"));
}
JSC_DEFINE_HOST_FUNCTION(constructMap, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* newTarget = asObject(callFrame->newTarget());
Structure* mapStructure = newTarget == callFrame->jsCallee()
? globalObject->mapStructure()
: InternalFunction::createSubclassStructure(globalObject, newTarget, getFunctionRealm(vm, newTarget)->mapStructure());
RETURN_IF_EXCEPTION(scope, { });
JSValue iterable = callFrame->argument(0);
if (iterable.isUndefinedOrNull())
RELEASE_AND_RETURN(scope, JSValue::encode(JSMap::create(globalObject, vm, mapStructure)));
if (auto* iterableMap = jsDynamicCast<JSMap*>(vm, iterable)) {
if (iterableMap->canCloneFastAndNonObservable(mapStructure))
RELEASE_AND_RETURN(scope, JSValue::encode(iterableMap->clone(globalObject, vm, mapStructure)));
}
JSMap* map = JSMap::create(globalObject, vm, mapStructure);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
JSValue adderFunction = map->JSObject::get(globalObject, vm.propertyNames->set);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
auto adderFunctionCallData = getCallData(vm, adderFunction);
if (adderFunctionCallData.type == CallData::Type::None)
return JSValue::encode(throwTypeError(globalObject, scope));
scope.release();
forEachInIterable(globalObject, iterable, [&](VM& vm, JSGlobalObject* globalObject, JSValue nextItem) {
auto scope = DECLARE_THROW_SCOPE(vm);
if (!nextItem.isObject()) {
throwTypeError(globalObject, scope);
return;
}
JSValue key = nextItem.get(globalObject, static_cast<unsigned>(0));
RETURN_IF_EXCEPTION(scope, void());
JSValue value = nextItem.get(globalObject, static_cast<unsigned>(1));
RETURN_IF_EXCEPTION(scope, void());
MarkedArgumentBuffer arguments;
arguments.append(key);
arguments.append(value);
ASSERT(!arguments.hasOverflowed());
scope.release();
call(globalObject, adderFunction, adderFunctionCallData, map, arguments);
});
return JSValue::encode(map);
}
JSC_DEFINE_HOST_FUNCTION(mapPrivateFuncMapBucketHead, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
ASSERT_UNUSED(globalObject, jsDynamicCast<JSMap*>(globalObject->vm(), callFrame->argument(0)));
JSMap* map = jsCast<JSMap*>(callFrame->uncheckedArgument(0));
auto* head = map->head();
ASSERT(head);
return JSValue::encode(head);
}
JSC_DEFINE_HOST_FUNCTION(mapPrivateFuncMapBucketNext, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
ASSERT(jsDynamicCast<JSMap::BucketType*>(globalObject->vm(), callFrame->argument(0)));
auto* bucket = jsCast<JSMap::BucketType*>(callFrame->uncheckedArgument(0));
ASSERT(bucket);
bucket = bucket->next();
while (bucket) {
if (!bucket->deleted())
return JSValue::encode(bucket);
bucket = bucket->next();
}
return JSValue::encode(globalObject->vm().sentinelMapBucket());
}
JSC_DEFINE_HOST_FUNCTION(mapPrivateFuncMapBucketKey, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
ASSERT_UNUSED(globalObject, jsDynamicCast<JSMap::BucketType*>(globalObject->vm(), callFrame->argument(0)));
auto* bucket = jsCast<JSMap::BucketType*>(callFrame->uncheckedArgument(0));
ASSERT(bucket);
return JSValue::encode(bucket->key());
}
JSC_DEFINE_HOST_FUNCTION(mapPrivateFuncMapBucketValue, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
ASSERT_UNUSED(globalObject, jsDynamicCast<JSMap::BucketType*>(globalObject->vm(), callFrame->argument(0)));
auto* bucket = jsCast<JSMap::BucketType*>(callFrame->uncheckedArgument(0));
ASSERT(bucket);
return JSValue::encode(bucket->value());
}
}