1/*
2 * Copyright (C) 2013, 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 "WeakMapPrototype.h"
28
29#include "JSCInlines.h"
30#include "JSWeakMap.h"
31
32namespace JSC {
33
34const ClassInfo WeakMapPrototype::s_info = { "WeakMap", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(WeakMapPrototype) };
35
36static EncodedJSValue JSC_HOST_CALL protoFuncWeakMapDelete(ExecState*);
37static EncodedJSValue JSC_HOST_CALL protoFuncWeakMapGet(ExecState*);
38static EncodedJSValue JSC_HOST_CALL protoFuncWeakMapHas(ExecState*);
39static EncodedJSValue JSC_HOST_CALL protoFuncWeakMapSet(ExecState*);
40
41void WeakMapPrototype::finishCreation(VM& vm, JSGlobalObject* globalObject)
42{
43 Base::finishCreation(vm);
44 ASSERT(inherits(vm, info()));
45
46 JSC_NATIVE_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->deleteKeyword, protoFuncWeakMapDelete, static_cast<unsigned>(PropertyAttribute::DontEnum), 1);
47 JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->get, protoFuncWeakMapGet, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, JSWeakMapGetIntrinsic);
48 JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->has, protoFuncWeakMapHas, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, JSWeakMapHasIntrinsic);
49 JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->set, protoFuncWeakMapSet, static_cast<unsigned>(PropertyAttribute::DontEnum), 2, JSWeakMapSetIntrinsic);
50
51 putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "WeakMap"), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
52}
53
54ALWAYS_INLINE static JSWeakMap* getWeakMap(CallFrame* callFrame, JSValue value)
55{
56 VM& vm = callFrame->vm();
57 auto scope = DECLARE_THROW_SCOPE(vm);
58
59 if (UNLIKELY(!value.isObject())) {
60 throwTypeError(callFrame, scope, "Called WeakMap function on non-object"_s);
61 return nullptr;
62 }
63
64 auto* map = jsDynamicCast<JSWeakMap*>(vm, asObject(value));
65 if (LIKELY(map))
66 return map;
67
68 throwTypeError(callFrame, scope, "Called WeakMap function on a non-WeakMap object"_s);
69 return nullptr;
70}
71
72EncodedJSValue JSC_HOST_CALL protoFuncWeakMapDelete(CallFrame* callFrame)
73{
74 auto* map = getWeakMap(callFrame, callFrame->thisValue());
75 if (!map)
76 return JSValue::encode(jsUndefined());
77 JSValue key = callFrame->argument(0);
78 return JSValue::encode(jsBoolean(key.isObject() && map->remove(asObject(key))));
79}
80
81EncodedJSValue JSC_HOST_CALL protoFuncWeakMapGet(CallFrame* callFrame)
82{
83 auto* map = getWeakMap(callFrame, callFrame->thisValue());
84 if (!map)
85 return JSValue::encode(jsUndefined());
86 JSValue key = callFrame->argument(0);
87 if (!key.isObject())
88 return JSValue::encode(jsUndefined());
89 return JSValue::encode(map->get(asObject(key)));
90}
91
92EncodedJSValue JSC_HOST_CALL protoFuncWeakMapHas(CallFrame* callFrame)
93{
94 auto* map = getWeakMap(callFrame, callFrame->thisValue());
95 if (!map)
96 return JSValue::encode(jsUndefined());
97 JSValue key = callFrame->argument(0);
98 return JSValue::encode(jsBoolean(key.isObject() && map->has(asObject(key))));
99}
100
101EncodedJSValue JSC_HOST_CALL protoFuncWeakMapSet(CallFrame* callFrame)
102{
103 VM& vm = callFrame->vm();
104 auto scope = DECLARE_THROW_SCOPE(vm);
105
106 auto* map = getWeakMap(callFrame, callFrame->thisValue());
107 EXCEPTION_ASSERT(!!scope.exception() == !map);
108 if (!map)
109 return JSValue::encode(jsUndefined());
110 JSValue key = callFrame->argument(0);
111 if (!key.isObject())
112 return JSValue::encode(throwTypeError(callFrame, scope, "Attempted to set a non-object key in a WeakMap"_s));
113 map->set(vm, asObject(key), callFrame->argument(1));
114 return JSValue::encode(callFrame->thisValue());
115}
116
117}
118