131 lines
4.7 KiB
C++
131 lines
4.7 KiB
C++
/*
|
|
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
|
|
* Copyright (C) 2003-2020 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 "ErrorPrototype.h"
|
|
|
|
#include "IntegrityInlines.h"
|
|
#include "JSCInlines.h"
|
|
#include "StringRecursionChecker.h"
|
|
|
|
namespace JSC {
|
|
|
|
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ErrorPrototypeBase);
|
|
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ErrorPrototype);
|
|
|
|
static JSC_DECLARE_HOST_FUNCTION(errorProtoFuncToString);
|
|
|
|
}
|
|
|
|
#include "ErrorPrototype.lut.h"
|
|
|
|
namespace JSC {
|
|
|
|
const ClassInfo ErrorPrototype::s_info = { "Object", &Base::s_info, &errorPrototypeTable, nullptr, CREATE_METHOD_TABLE(ErrorPrototype) };
|
|
|
|
/* Source for ErrorPrototype.lut.h
|
|
@begin errorPrototypeTable
|
|
toString errorProtoFuncToString DontEnum|Function 0
|
|
@end
|
|
*/
|
|
|
|
ErrorPrototypeBase::ErrorPrototypeBase(VM& vm, Structure* structure)
|
|
: Base(vm, structure)
|
|
{
|
|
}
|
|
|
|
void ErrorPrototypeBase::finishCreation(VM& vm, const String& name)
|
|
{
|
|
Base::finishCreation(vm);
|
|
ASSERT(inherits(vm, info()));
|
|
putDirectWithoutTransition(vm, vm.propertyNames->name, jsString(vm, name), static_cast<unsigned>(PropertyAttribute::DontEnum));
|
|
putDirectWithoutTransition(vm, vm.propertyNames->message, jsEmptyString(vm), static_cast<unsigned>(PropertyAttribute::DontEnum));
|
|
}
|
|
|
|
ErrorPrototype::ErrorPrototype(VM& vm, Structure* structure)
|
|
: Base(vm, structure)
|
|
{
|
|
}
|
|
|
|
// ------------------------------ Functions ---------------------------
|
|
|
|
// ECMA-262 5.1, 15.11.4.4
|
|
JSC_DEFINE_HOST_FUNCTION(errorProtoFuncToString, (JSGlobalObject* globalObject, CallFrame* callFrame))
|
|
{
|
|
VM& vm = globalObject->vm();
|
|
auto scope = DECLARE_THROW_SCOPE(vm);
|
|
|
|
// 1. Let O be the this value.
|
|
JSValue thisValue = callFrame->thisValue().toThis(globalObject, ECMAMode::strict());
|
|
|
|
// 2. If Type(O) is not Object, throw a TypeError exception.
|
|
if (!thisValue.isObject())
|
|
return throwVMTypeError(globalObject, scope);
|
|
JSObject* thisObj = asObject(thisValue);
|
|
Integrity::auditStructureID(vm, thisObj->structureID());
|
|
|
|
// Guard against recursion!
|
|
StringRecursionChecker checker(globalObject, thisObj);
|
|
EXCEPTION_ASSERT(!scope.exception() || checker.earlyReturnValue());
|
|
if (JSValue earlyReturnValue = checker.earlyReturnValue())
|
|
return JSValue::encode(earlyReturnValue);
|
|
|
|
// 3. Let name be the result of calling the [[Get]] internal method of O with argument "name".
|
|
JSValue name = thisObj->get(globalObject, vm.propertyNames->name);
|
|
RETURN_IF_EXCEPTION(scope, encodedJSValue());
|
|
|
|
// 4. If name is undefined, then let name be "Error"; else let name be ToString(name).
|
|
String nameString;
|
|
if (name.isUndefined())
|
|
nameString = "Error"_s;
|
|
else {
|
|
nameString = name.toWTFString(globalObject);
|
|
RETURN_IF_EXCEPTION(scope, encodedJSValue());
|
|
}
|
|
|
|
// 5. Let msg be the result of calling the [[Get]] internal method of O with argument "message".
|
|
JSValue message = thisObj->get(globalObject, vm.propertyNames->message);
|
|
RETURN_IF_EXCEPTION(scope, encodedJSValue());
|
|
|
|
// (sic)
|
|
// 6. If msg is undefined, then let msg be the empty String; else let msg be ToString(msg).
|
|
// 7. If msg is undefined, then let msg be the empty String; else let msg be ToString(msg).
|
|
String messageString;
|
|
if (message.isUndefined())
|
|
messageString = String();
|
|
else {
|
|
messageString = message.toWTFString(globalObject);
|
|
RETURN_IF_EXCEPTION(scope, encodedJSValue());
|
|
}
|
|
|
|
// 8. If name is the empty String, return msg.
|
|
if (!nameString.length())
|
|
return JSValue::encode(message.isString() ? message : jsString(vm, messageString));
|
|
|
|
// 9. If msg is the empty String, return name.
|
|
if (!messageString.length())
|
|
return JSValue::encode(name.isString() ? name : jsString(vm, nameString));
|
|
|
|
// 10. Return the result of concatenating name, ":", a single space character, and msg.
|
|
RELEASE_AND_RETURN(scope, JSValue::encode(jsMakeNontrivialString(globalObject, nameString, ": ", messageString)));
|
|
}
|
|
|
|
} // namespace JSC
|