1/*
2 * Copyright (C) 2008, 2012, 2015-2016 Apple Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 */
19
20#include "config.h"
21#include "Lookup.h"
22
23#include "GetterSetter.h"
24#include "JSFunction.h"
25#include "JSCInlines.h"
26
27namespace JSC {
28
29void reifyStaticAccessor(VM& vm, const HashTableValue& value, JSObject& thisObject, PropertyName propertyName)
30{
31 JSGlobalObject* globalObject = thisObject.globalObject(vm);
32 JSObject* getter = nullptr;
33 if (value.accessorGetter()) {
34 if (value.attributes() & PropertyAttribute::Builtin)
35 getter = JSFunction::create(vm, value.builtinAccessorGetterGenerator()(vm), globalObject);
36 else {
37 String getterName = tryMakeString("get "_s, String(*propertyName.publicName()));
38 if (!getterName)
39 return;
40 getter = JSFunction::create(vm, globalObject, 0, getterName, value.accessorGetter());
41 }
42 }
43 GetterSetter* accessor = GetterSetter::create(vm, globalObject, getter, nullptr);
44 thisObject.putDirectNonIndexAccessor(vm, propertyName, accessor, attributesForStructure(value.attributes()));
45}
46
47bool setUpStaticFunctionSlot(VM& vm, const ClassInfo* classInfo, const HashTableValue* entry, JSObject* thisObject, PropertyName propertyName, PropertySlot& slot)
48{
49 ASSERT(thisObject->globalObject(vm));
50 ASSERT(entry->attributes() & PropertyAttribute::BuiltinOrFunctionOrAccessorOrLazyProperty);
51 unsigned attributes;
52 bool isAccessor = entry->attributes() & PropertyAttribute::Accessor;
53 PropertyOffset offset = thisObject->getDirectOffset(vm, propertyName, attributes);
54
55 if (!isValidOffset(offset)) {
56 // If a property is ever deleted from an object with a static table, then we reify
57 // all static functions at that time - after this we shouldn't be re-adding anything.
58 if (thisObject->staticPropertiesReified(vm))
59 return false;
60
61 reifyStaticProperty(vm, classInfo, propertyName, *entry, *thisObject);
62
63 offset = thisObject->getDirectOffset(vm, propertyName, attributes);
64 if (!isValidOffset(offset)) {
65 dataLog("Static hashtable initialiation for ", propertyName, " did not produce a property.\n");
66 RELEASE_ASSERT_NOT_REACHED();
67 }
68 }
69
70 if (isAccessor)
71 slot.setCacheableGetterSlot(thisObject, attributes, jsCast<GetterSetter*>(thisObject->getDirect(offset)), offset);
72 else
73 slot.setValue(thisObject, attributes, thisObject->getDirect(offset), offset);
74 return true;
75}
76
77} // namespace JSC
78