1/*
2 * Copyright (C) 2015-2016 Apple, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "WeakSetPrototype.h"
28
29#include "JSCInlines.h"
30#include "JSWeakSet.h"
31
32namespace JSC {
33
34const ClassInfo WeakSetPrototype::s_info = { "WeakSet", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(WeakSetPrototype) };
35
36static EncodedJSValue JSC_HOST_CALL protoFuncWeakSetDelete(ExecState*);
37static EncodedJSValue JSC_HOST_CALL protoFuncWeakSetHas(ExecState*);
38static EncodedJSValue JSC_HOST_CALL protoFuncWeakSetAdd(ExecState*);
39
40void WeakSetPrototype::finishCreation(VM& vm, JSGlobalObject* globalObject)
41{
42 Base::finishCreation(vm);
43 ASSERT(inherits(vm, info()));
44 didBecomePrototype();
45
46 JSC_NATIVE_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->deleteKeyword, protoFuncWeakSetDelete, static_cast<unsigned>(PropertyAttribute::DontEnum), 1);
47 JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->has, protoFuncWeakSetHas, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, JSWeakSetHasIntrinsic);
48 JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->add, protoFuncWeakSetAdd, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, JSWeakSetAddIntrinsic);
49
50 putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "WeakSet"), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
51}
52
53ALWAYS_INLINE static JSWeakSet* getWeakSet(CallFrame* callFrame, JSValue value)
54{
55 VM& vm = callFrame->vm();
56 auto scope = DECLARE_THROW_SCOPE(vm);
57
58 if (UNLIKELY(!value.isObject())) {
59 throwTypeError(callFrame, scope, "Called WeakSet function on non-object"_s);
60 return nullptr;
61 }
62
63 auto* set = jsDynamicCast<JSWeakSet*>(vm, asObject(value));
64 if (LIKELY(set))
65 return set;
66
67 throwTypeError(callFrame, scope, "Called WeakSet function on a non-WeakSet object"_s);
68 return nullptr;
69}
70
71EncodedJSValue JSC_HOST_CALL protoFuncWeakSetDelete(CallFrame* callFrame)
72{
73 auto* set = getWeakSet(callFrame, callFrame->thisValue());
74 if (!set)
75 return JSValue::encode(jsUndefined());
76 JSValue key = callFrame->argument(0);
77 return JSValue::encode(jsBoolean(key.isObject() && set->remove(asObject(key))));
78}
79
80EncodedJSValue JSC_HOST_CALL protoFuncWeakSetHas(CallFrame* callFrame)
81{
82 auto* set = getWeakSet(callFrame, callFrame->thisValue());
83 if (!set)
84 return JSValue::encode(jsUndefined());
85 JSValue key = callFrame->argument(0);
86 return JSValue::encode(jsBoolean(key.isObject() && set->has(asObject(key))));
87}
88
89EncodedJSValue JSC_HOST_CALL protoFuncWeakSetAdd(CallFrame* callFrame)
90{
91 VM& vm = callFrame->vm();
92 auto scope = DECLARE_THROW_SCOPE(vm);
93
94 auto* set = getWeakSet(callFrame, callFrame->thisValue());
95 EXCEPTION_ASSERT(!!scope.exception() == !set);
96 if (!set)
97 return JSValue::encode(jsUndefined());
98 JSValue key = callFrame->argument(0);
99 if (!key.isObject())
100 return JSValue::encode(throwTypeError(callFrame, scope, "Attempted to add a non-object key to a WeakSet"_s));
101 set->add(vm, asObject(key));
102 return JSValue::encode(callFrame->thisValue());
103}
104
105}
106