blob: f1821d556a3d404493675eae25fa2e46673ec43a [file] [log] [blame]
/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2003-2017 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include "ErrorConstructor.h"
#include "ErrorPrototype.h"
#include "Interpreter.h"
#include "JSGlobalObject.h"
#include "JSString.h"
#include "JSCInlines.h"
namespace JSC {
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ErrorConstructor);
const ClassInfo ErrorConstructor::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(ErrorConstructor) };
static EncodedJSValue JSC_HOST_CALL callErrorConstructor(JSGlobalObject*, CallFrame*);
static EncodedJSValue JSC_HOST_CALL constructErrorConstructor(JSGlobalObject*, CallFrame*);
ErrorConstructor::ErrorConstructor(VM& vm, Structure* structure)
: InternalFunction(vm, structure, callErrorConstructor, constructErrorConstructor)
{
}
void ErrorConstructor::finishCreation(VM& vm, ErrorPrototype* errorPrototype)
{
Base::finishCreation(vm, vm.propertyNames->Error.string(), NameAdditionMode::WithoutStructureTransition);
// ECMA 15.11.3.1 Error.prototype
putDirectWithoutTransition(vm, vm.propertyNames->prototype, errorPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->stackTraceLimit, jsNumber(globalObject()->stackTraceLimit().valueOr(Options::defaultErrorStackTraceLimit())), static_cast<unsigned>(PropertyAttribute::None));
}
// ECMA 15.9.3
EncodedJSValue JSC_HOST_CALL constructErrorConstructor(JSGlobalObject* globalObject, CallFrame* callFrame)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue message = callFrame->argument(0);
Structure* errorStructure = InternalFunction::createSubclassStructure(globalObject, callFrame->jsCallee(), callFrame->newTarget(), globalObject->errorStructure());
RETURN_IF_EXCEPTION(scope, encodedJSValue());
RELEASE_AND_RETURN(scope, JSValue::encode(ErrorInstance::create(globalObject, errorStructure, message, nullptr, TypeNothing, false)));
}
EncodedJSValue JSC_HOST_CALL callErrorConstructor(JSGlobalObject* globalObject, CallFrame* callFrame)
{
JSValue message = callFrame->argument(0);
Structure* errorStructure = globalObject->errorStructure();
return JSValue::encode(ErrorInstance::create(globalObject, errorStructure, message, nullptr, TypeNothing, false));
}
bool ErrorConstructor::put(JSCell* cell, JSGlobalObject* globalObject, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
{
VM& vm = globalObject->vm();
ErrorConstructor* thisObject = jsCast<ErrorConstructor*>(cell);
if (propertyName == vm.propertyNames->stackTraceLimit) {
if (value.isNumber()) {
double effectiveLimit = value.asNumber();
effectiveLimit = std::max(0., effectiveLimit);
effectiveLimit = std::min(effectiveLimit, static_cast<double>(std::numeric_limits<unsigned>::max()));
thisObject->globalObject()->setStackTraceLimit(static_cast<unsigned>(effectiveLimit));
} else
thisObject->globalObject()->setStackTraceLimit(WTF::nullopt);
}
return Base::put(thisObject, globalObject, propertyName, value, slot);
}
bool ErrorConstructor::deleteProperty(JSCell* cell, JSGlobalObject* globalObject, PropertyName propertyName)
{
VM& vm = globalObject->vm();
ErrorConstructor* thisObject = jsCast<ErrorConstructor*>(cell);
if (propertyName == vm.propertyNames->stackTraceLimit)
thisObject->globalObject()->setStackTraceLimit(WTF::nullopt);
return Base::deleteProperty(thisObject, globalObject, propertyName);
}
} // namespace JSC