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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2008-2020 Apple Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "Operations.h"
#include "JSBigInt.h"
#include "JSCInlines.h"
namespace JSC {
bool JSValue::equalSlowCase(JSGlobalObject* globalObject, JSValue v1, JSValue v2)
{
return equalSlowCaseInline(globalObject, v1, v2);
}
NEVER_INLINE JSValue jsAddSlowCase(JSGlobalObject* globalObject, JSValue v1, JSValue v2)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue p1 = v1.toPrimitive(globalObject);
RETURN_IF_EXCEPTION(scope, { });
JSValue p2 = v2.toPrimitive(globalObject);
RETURN_IF_EXCEPTION(scope, { });
if (p1.isString()) {
if (p2.isCell()) {
JSString* p2String = p2.toString(globalObject);
RETURN_IF_EXCEPTION(scope, { });
RELEASE_AND_RETURN(scope, jsString(globalObject, asString(p1), p2String));
}
String p2String = p2.toWTFString(globalObject);
RETURN_IF_EXCEPTION(scope, { });
RELEASE_AND_RETURN(scope, jsString(globalObject, asString(p1), p2String));
}
if (p2.isString()) {
if (p1.isCell()) {
JSString* p1String = p1.toString(globalObject);
RETURN_IF_EXCEPTION(scope, { });
RELEASE_AND_RETURN(scope, jsString(globalObject, p1String, asString(p2)));
}
String p1String = p1.toWTFString(globalObject);
RETURN_IF_EXCEPTION(scope, { });
RELEASE_AND_RETURN(scope, jsString(globalObject, p1String, asString(p2)));
}
auto doubleOp = [] (double left, double right) -> double {
return left + right;
};
auto bigIntOp = [] (JSGlobalObject* globalObject, auto left, auto right) {
return JSBigInt::add(globalObject, left, right);
};
RELEASE_AND_RETURN(scope, arithmeticBinaryOp(globalObject, p1, p2, doubleOp, bigIntOp, "Invalid mix of BigInt and other type in addition."_s));
}
JSString* jsTypeStringForValueWithConcurrency(VM& vm, JSGlobalObject* globalObject, JSValue v, Concurrency concurrency)
{
if (v.isUndefined())
return vm.smallStrings.undefinedString();
if (v.isBoolean())
return vm.smallStrings.booleanString();
if (v.isNumber())
return vm.smallStrings.numberString();
if (v.isString())
return vm.smallStrings.stringString();
if (v.isSymbol())
return vm.smallStrings.symbolString();
if (v.isBigInt())
return vm.smallStrings.bigintString();
if (v.isObject()) {
JSObject* object = asObject(v);
// Return "undefined" for objects that should be treated
// as null when doing comparisons.
if (object->structure()->masqueradesAsUndefined(globalObject))
return vm.smallStrings.undefinedString();
if (LIKELY(concurrency == Concurrency::MainThread)) {
if (object->isCallable())
return vm.smallStrings.functionString();
return vm.smallStrings.objectString();
}
switch (object->isCallableWithConcurrency<Concurrency::ConcurrentThread>()) {
case TriState::True:
return vm.smallStrings.functionString();
case TriState::False:
return vm.smallStrings.objectString();
case TriState::Indeterminate:
return nullptr;
}
}
// This case can happen for internal objects like GetterSetter, that
// can be exposed to this function by transformations like LICM blind hoisting.
// The actual result shouldn't matter, as long as it matches buildTypeOf.
return vm.smallStrings.objectString();
}
size_t normalizePrototypeChain(JSGlobalObject* globalObject, JSCell* base, bool& sawPolyProto)
{
VM& vm = globalObject->vm();
size_t count = 0;
sawPolyProto = false;
JSCell* current = base;
while (1) {
Structure* structure = current->structure();
if (structure->isProxy())
return InvalidPrototypeChain;
sawPolyProto |= structure->hasPolyProto();
JSValue prototype = structure->prototypeForLookup(globalObject, current);
if (prototype.isNull())
return count;
current = prototype.asCell();
structure = current->structure();
if (structure->isDictionary()) {
if (structure->hasBeenFlattenedBefore())
return InvalidPrototypeChain;
structure->flattenDictionaryStructure(vm, asObject(current));
}
++count;
}
}
} // namespace JSC
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