bool
BooleanGetPrimitiveValueSlow(JSContext *cx, JSObject &obj, Value *vp)
{
InvokeArgsGuard ag;
if (!cx->stack.pushInvokeArgs(cx, 0, &ag))
return false;
ag.calleev() = cx->compartment->maybeGlobal()->booleanValueOf();
ag.thisv().setObject(obj);
if (!Invoke(cx, ag))
return false;
*vp = ag.rval();
return true;
}
bool
BooleanGetPrimitiveValueSlow(JSContext *cx, JSObject &obj, Value *vp)
{
JS_ASSERT(ObjectClassIs(obj, ESClass_Boolean, cx));
JS_ASSERT(obj.isProxy());
/*
* To respect the proxy abstraction, we can't simply unwrap and call
* getPrimitiveThis on the wrapped object. All we know is that obj says
* its [[Class]] is "Boolean". Boolean.prototype.valueOf is specified to
* return the [[PrimitiveValue]] internal property, so call that instead.
*/
InvokeArgsGuard ag;
if (!cx->stack.pushInvokeArgs(cx, 0, &ag))
return false;
ag.calleev().setUndefined();
ag.thisv().setObject(obj);
if (!GetProxyHandler(&obj)->nativeCall(cx, &obj, &BooleanClass, bool_valueOf, ag))
return false;
*vp = ag.rval();
return true;
}
static bool
PreprocessValue(JSContext *cx, JSObject *holder, KeyType key, Value *vp, StringifyContext *scx)
{
JSString *keyStr = NULL;
/* Step 2. */
if (vp->isObject()) {
Value toJSON;
jsid id = NameToId(cx->runtime->atomState.toJSONAtom);
if (!js_GetMethod(cx, RootedVarObject(cx, &vp->toObject()), id, 0, &toJSON))
return false;
if (js_IsCallable(toJSON)) {
keyStr = KeyStringifier<KeyType>::toString(cx, key);
if (!keyStr)
return false;
InvokeArgsGuard args;
if (!cx->stack.pushInvokeArgs(cx, 1, &args))
return false;
args.calleev() = toJSON;
args.thisv() = *vp;
args[0] = StringValue(keyStr);
if (!Invoke(cx, args))
return false;
*vp = args.rval();
}
}
/* Step 3. */
if (scx->replacer && scx->replacer->isCallable()) {
if (!keyStr) {
keyStr = KeyStringifier<KeyType>::toString(cx, key);
if (!keyStr)
return false;
}
InvokeArgsGuard args;
if (!cx->stack.pushInvokeArgs(cx, 2, &args))
return false;
args.calleev() = ObjectValue(*scx->replacer);
args.thisv() = ObjectValue(*holder);
args[0] = StringValue(keyStr);
args[1] = *vp;
if (!Invoke(cx, args))
return false;
*vp = args.rval();
}
/* Step 4. */
if (vp->isObject()) {
JSObject &obj = vp->toObject();
if (ObjectClassIs(obj, ESClass_Number, cx)) {
double d;
if (!ToNumber(cx, *vp, &d))
return false;
vp->setNumber(d);
} else if (ObjectClassIs(obj, ESClass_String, cx)) {
JSString *str = ToStringSlow(cx, *vp);
if (!str)
return false;
vp->setString(str);
} else if (ObjectClassIs(obj, ESClass_Boolean, cx)) {
if (!BooleanGetPrimitiveValue(cx, obj, vp))
return false;
JS_ASSERT(vp->isBoolean());
}
}
return true;
}
bool
js::SetElement(JSContext *cx, ObjectImpl *obj, ObjectImpl *receiver, uint32_t index,
const Value &v, bool *succeeded)
{
NEW_OBJECT_REPRESENTATION_ONLY();
do {
MOZ_ASSERT(obj);
if (static_cast<JSObject *>(obj)->isProxy()) { // XXX
MOZ_NOT_REACHED("NYI: proxy [[SetP]]");
return false;
}
PropDesc ownDesc;
if (!GetOwnElement(cx, obj, index, &ownDesc))
return false;
if (!ownDesc.isUndefined()) {
if (ownDesc.isDataDescriptor()) {
if (!ownDesc.writable()) {
*succeeded = false;
return true;
}
if (receiver == obj) {
PropDesc updateDesc = PropDesc::valueOnly(v);
return DefineElement(cx, receiver, index, updateDesc, false, succeeded);
}
PropDesc newDesc;
return DefineElement(cx, receiver, index, newDesc, false, succeeded);
}
if (ownDesc.isAccessorDescriptor()) {
Value setter = ownDesc.setterValue();
if (setter.isUndefined()) {
*succeeded = false;
return true;
}
InvokeArgsGuard args;
if (!cx->stack.pushInvokeArgs(cx, 1, &args))
return false;
/* Push set, receiver, and v as the sole argument. */
args.calleev() = setter;
args.thisv() = ObjectValue(*receiver);
args[0] = v;
*succeeded = true;
return Invoke(cx, args);
}
MOZ_NOT_REACHED("NYI: setting PropertyOp-based property");
return false;
}
obj = obj->getProto();
if (obj)
continue;
PropDesc newDesc(v, PropDesc::Writable, PropDesc::Enumerable, PropDesc::Configurable);
return DefineElement(cx, receiver, index, newDesc, false, succeeded);
} while (false);
MOZ_NOT_REACHED("buggy control flow");
return false;
}
bool
js::GetElement(JSContext *cx, ObjectImpl *obj, ObjectImpl *receiver, uint32_t index,
Value *vp)
{
NEW_OBJECT_REPRESENTATION_ONLY();
do {
MOZ_ASSERT(obj);
if (static_cast<JSObject *>(obj)->isProxy()) { // XXX
MOZ_NOT_REACHED("NYI: proxy [[GetP]]");
return false;
}
PropDesc desc;
if (!GetOwnElement(cx, obj, index, &desc))
return false;
/* No property? Recur or bottom out. */
if (desc.isUndefined()) {
obj = obj->getProto();
if (obj)
continue;
vp->setUndefined();
return true;
}
/* If it's a data property, return the value. */
if (desc.isDataDescriptor()) {
*vp = desc.value();
return true;
}
/* If it's an accessor property, call its [[Get]] with the receiver. */
if (desc.isAccessorDescriptor()) {
Value get = desc.getterValue();
if (get.isUndefined()) {
vp->setUndefined();
return true;
}
InvokeArgsGuard args;
if (!cx->stack.pushInvokeArgs(cx, 0, &args))
return false;
/* Push get, receiver, and no args. */
args.calleev() = get;
args.thisv() = ObjectValue(*receiver);
bool ok = Invoke(cx, args);
*vp = args.rval();
return ok;
}
/* Otherwise it's a PropertyOp-based property. XXX handle this! */
MOZ_NOT_REACHED("NYI: handle PropertyOp'd properties here");
return false;
} while (false);
MOZ_NOT_REACHED("buggy control flow");
return false;
}
/*
* ES5 15.12.3 Str, steps 2-4, extracted to enable preprocessing of property
* values when stringifying objects in JO.
*/
static bool
PreprocessValue(JSContext *cx, JSObject *holder, jsid key, Value *vp, StringifyContext *scx)
{
JSString *keyStr = NULL;
/* Step 2. */
if (vp->isObject()) {
Value toJSON;
jsid id = ATOM_TO_JSID(cx->runtime->atomState.toJSONAtom);
if (!js_GetMethod(cx, &vp->toObject(), id, JSGET_NO_METHOD_BARRIER, &toJSON))
return false;
if (js_IsCallable(toJSON)) {
keyStr = IdToString(cx, key);
if (!keyStr)
return false;
LeaveTrace(cx);
InvokeArgsGuard args;
if (!cx->stack.pushInvokeArgs(cx, 1, &args))
return false;
args.calleev() = toJSON;
args.thisv() = *vp;
args[0] = StringValue(keyStr);
if (!Invoke(cx, args))
return false;
*vp = args.rval();
}
}
/* Step 3. */
if (scx->replacer && scx->replacer->isCallable()) {
if (!keyStr) {
keyStr = IdToString(cx, key);
if (!keyStr)
return false;
}
LeaveTrace(cx);
InvokeArgsGuard args;
if (!cx->stack.pushInvokeArgs(cx, 2, &args))
return false;
args.calleev() = ObjectValue(*scx->replacer);
args.thisv() = ObjectValue(*holder);
args[0] = StringValue(keyStr);
args[1] = *vp;
if (!Invoke(cx, args))
return false;
*vp = args.rval();
}
/* Step 4. */
if (vp->isObject()) {
JSObject *obj = &vp->toObject();
Class *clasp = obj->getClass();
if (clasp == &js_NumberClass) {
double d;
if (!ValueToNumber(cx, *vp, &d))
return false;
vp->setNumber(d);
} else if (clasp == &js_StringClass) {
JSString *str = js_ValueToString(cx, *vp);
if (!str)
return false;
vp->setString(str);
} else if (clasp == &js_BooleanClass) {
*vp = obj->getPrimitiveThis();
JS_ASSERT(vp->isBoolean());
}
}
return true;
}
