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/*
* Copyright (C) 2024 Sosuke Suzuki <aosukeke@gmail.com>.
* Copyright (C) 2024 Tetsuharu Ohzeki <tetsuharu.ohzeki@gmail.com>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSIteratorConstructor.h"
#include "AbstractSlotVisitor.h"
#include "BuiltinNames.h"
#include "GetterSetter.h"
#include "JSCInlines.h"
#include "JSIterator.h"
#include "JSIteratorPrototype.h"
#include "SlotVisitor.h"
namespace JSC {
const ClassInfo JSIteratorConstructor::s_info = { "Function"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSIteratorConstructor) };
Structure* JSIteratorConstructor::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(InternalFunctionType, StructureFlags), info());
}
JSIteratorConstructor* JSIteratorConstructor::create(VM& vm, JSGlobalObject* globalObject, Structure* structure, JSIteratorPrototype* iteratorPrototype)
{
JSIteratorConstructor* constructor = new (NotNull, allocateCell<JSIteratorConstructor>(vm)) JSIteratorConstructor(vm, structure);
constructor->finishCreation(vm, globalObject, iteratorPrototype);
return constructor;
}
void JSIteratorConstructor::finishCreation(VM& vm, JSGlobalObject* globalObject, JSIteratorPrototype* iteratorPrototype)
{
Base::finishCreation(vm, 0, vm.propertyNames->Iterator.string(), PropertyAdditionMode::WithoutStructureTransition);
putDirectWithoutTransition(vm, vm.propertyNames->prototype, iteratorPrototype, static_cast<unsigned>(PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly));
JSC_BUILTIN_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->from, jsIteratorConstructorFromCodeGenerator, static_cast<unsigned>(PropertyAttribute::DontEnum));
if (Options::useIteratorHelpers() && Options::useIteratorSequencing())
JSC_BUILTIN_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->builtinNames().concatPublicName(), jsIteratorConstructorConcatCodeGenerator, static_cast<unsigned>(PropertyAttribute::DontEnum));
}
template<typename Visitor>
void JSIteratorConstructor::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
auto* thisObject = jsCast<JSIteratorConstructor*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
}
DEFINE_VISIT_CHILDREN(JSIteratorConstructor);
static JSC_DECLARE_HOST_FUNCTION(callIterator);
static JSC_DECLARE_HOST_FUNCTION(constructIterator);
JSIteratorConstructor::JSIteratorConstructor(VM& vm, Structure* structure)
: Base(vm, structure, callIterator, constructIterator)
{
}
JSC_DEFINE_HOST_FUNCTION(callIterator, (JSGlobalObject* globalObject, CallFrame*))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(globalObject, scope, "Iterator"_s));
}
// https://tc39.es/proposal-iterator-helpers/#sec-iterator
JSC_DEFINE_HOST_FUNCTION(constructIterator, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* newTarget = asObject(callFrame->newTarget());
JSIteratorConstructor* iteratorConstructor = jsCast<JSIteratorConstructor*>(callFrame->jsCallee());
if (newTarget == iteratorConstructor)
return JSValue::encode(throwTypeError(globalObject, scope, "Iterator cannot be constructed directly"_s));
Structure* iteratorStructure = JSC_GET_DERIVED_STRUCTURE(vm, iteratorStructure, newTarget, callFrame->jsCallee());
RETURN_IF_EXCEPTION(scope, { });
RELEASE_AND_RETURN(scope, JSValue::encode(JSIterator::create(vm, iteratorStructure)));
}
} // namespace JSC
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