1/*
2 * Copyright (C) 2013-2017 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 "MapConstructor.h"
28
29#include "Error.h"
30#include "GetterSetter.h"
31#include "IteratorOperations.h"
32#include "JSCInlines.h"
33#include "JSGlobalObject.h"
34#include "JSMap.h"
35#include "JSObjectInlines.h"
36#include "MapPrototype.h"
37
38namespace JSC {
39
40const ClassInfo MapConstructor::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(MapConstructor) };
41
42void MapConstructor::finishCreation(VM& vm, MapPrototype* mapPrototype, GetterSetter* speciesSymbol)
43{
44 Base::finishCreation(vm, "Map"_s, NameVisibility::Visible, NameAdditionMode::WithoutStructureTransition);
45 putDirectWithoutTransition(vm, vm.propertyNames->prototype, mapPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
46 putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
47 putDirectNonIndexAccessorWithoutTransition(vm, vm.propertyNames->speciesSymbol, speciesSymbol, PropertyAttribute::Accessor | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum);
48}
49
50static EncodedJSValue JSC_HOST_CALL callMap(ExecState*);
51static EncodedJSValue JSC_HOST_CALL constructMap(ExecState*);
52
53MapConstructor::MapConstructor(VM& vm, Structure* structure)
54 : Base(vm, structure, callMap, constructMap)
55{
56}
57
58static EncodedJSValue JSC_HOST_CALL callMap(ExecState* exec)
59{
60 VM& vm = exec->vm();
61 auto scope = DECLARE_THROW_SCOPE(vm);
62 return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(exec, scope, "Map"));
63}
64
65static EncodedJSValue JSC_HOST_CALL constructMap(ExecState* exec)
66{
67 VM& vm = exec->vm();
68 auto scope = DECLARE_THROW_SCOPE(vm);
69
70 JSGlobalObject* globalObject = jsCast<InternalFunction*>(exec->jsCallee())->globalObject(vm);
71 Structure* mapStructure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), globalObject->mapStructure());
72 RETURN_IF_EXCEPTION(scope, encodedJSValue());
73
74 JSValue iterable = exec->argument(0);
75 if (iterable.isUndefinedOrNull())
76 RELEASE_AND_RETURN(scope, JSValue::encode(JSMap::create(exec, vm, mapStructure)));
77
78 if (auto* iterableMap = jsDynamicCast<JSMap*>(vm, iterable)) {
79 if (iterableMap->canCloneFastAndNonObservable(mapStructure))
80 RELEASE_AND_RETURN(scope, JSValue::encode(iterableMap->clone(exec, vm, mapStructure)));
81 }
82
83 JSMap* map = JSMap::create(exec, vm, mapStructure);
84 RETURN_IF_EXCEPTION(scope, encodedJSValue());
85
86 JSValue adderFunction = map->JSObject::get(exec, vm.propertyNames->set);
87 RETURN_IF_EXCEPTION(scope, encodedJSValue());
88
89 CallData adderFunctionCallData;
90 CallType adderFunctionCallType = getCallData(vm, adderFunction, adderFunctionCallData);
91 if (adderFunctionCallType == CallType::None)
92 return JSValue::encode(throwTypeError(exec, scope));
93
94 scope.release();
95 forEachInIterable(exec, iterable, [&](VM& vm, ExecState* exec, JSValue nextItem) {
96 auto scope = DECLARE_THROW_SCOPE(vm);
97 if (!nextItem.isObject()) {
98 throwTypeError(exec, scope);
99 return;
100 }
101
102 JSValue key = nextItem.get(exec, static_cast<unsigned>(0));
103 RETURN_IF_EXCEPTION(scope, void());
104
105 JSValue value = nextItem.get(exec, static_cast<unsigned>(1));
106 RETURN_IF_EXCEPTION(scope, void());
107
108 MarkedArgumentBuffer arguments;
109 arguments.append(key);
110 arguments.append(value);
111 ASSERT(!arguments.hasOverflowed());
112 scope.release();
113 call(exec, adderFunction, adderFunctionCallType, adderFunctionCallData, map, arguments);
114 });
115
116 return JSValue::encode(map);
117}
118
119EncodedJSValue JSC_HOST_CALL mapPrivateFuncMapBucketHead(ExecState* exec)
120{
121 ASSERT(jsDynamicCast<JSMap*>(exec->vm(), exec->argument(0)));
122 JSMap* map = jsCast<JSMap*>(exec->uncheckedArgument(0));
123 auto* head = map->head();
124 ASSERT(head);
125 return JSValue::encode(head);
126}
127
128EncodedJSValue JSC_HOST_CALL mapPrivateFuncMapBucketNext(ExecState* exec)
129{
130 ASSERT(jsDynamicCast<JSMap::BucketType*>(exec->vm(), exec->argument(0)));
131 auto* bucket = jsCast<JSMap::BucketType*>(exec->uncheckedArgument(0));
132 ASSERT(bucket);
133 bucket = bucket->next();
134 while (bucket) {
135 if (!bucket->deleted())
136 return JSValue::encode(bucket);
137 bucket = bucket->next();
138 }
139 return JSValue::encode(exec->vm().sentinelMapBucket());
140}
141
142EncodedJSValue JSC_HOST_CALL mapPrivateFuncMapBucketKey(ExecState* exec)
143{
144 ASSERT(jsDynamicCast<JSMap::BucketType*>(exec->vm(), exec->argument(0)));
145 auto* bucket = jsCast<JSMap::BucketType*>(exec->uncheckedArgument(0));
146 ASSERT(bucket);
147 return JSValue::encode(bucket->key());
148}
149
150EncodedJSValue JSC_HOST_CALL mapPrivateFuncMapBucketValue(ExecState* exec)
151{
152 ASSERT(jsDynamicCast<JSMap::BucketType*>(exec->vm(), exec->argument(0)));
153 auto* bucket = jsCast<JSMap::BucketType*>(exec->uncheckedArgument(0));
154 ASSERT(bucket);
155 return JSValue::encode(bucket->value());
156}
157
158}
159