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, 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(JSGlobalObject*, CallFrame*);
51static EncodedJSValue JSC_HOST_CALL constructMap(JSGlobalObject*, CallFrame*);
52
53MapConstructor::MapConstructor(VM& vm, Structure* structure)
54 : Base(vm, structure, callMap, constructMap)
55{
56}
57
58static EncodedJSValue JSC_HOST_CALL callMap(JSGlobalObject* globalObject, CallFrame*)
59{
60 VM& vm = globalObject->vm();
61 auto scope = DECLARE_THROW_SCOPE(vm);
62 return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(globalObject, scope, "Map"));
63}
64
65static EncodedJSValue JSC_HOST_CALL constructMap(JSGlobalObject* globalObject, CallFrame* callFrame)
66{
67 VM& vm = globalObject->vm();
68 auto scope = DECLARE_THROW_SCOPE(vm);
69
70 Structure* mapStructure = InternalFunction::createSubclassStructure(globalObject, callFrame->jsCallee(), callFrame->newTarget(), globalObject->mapStructure());
71 RETURN_IF_EXCEPTION(scope, encodedJSValue());
72
73 JSValue iterable = callFrame->argument(0);
74 if (iterable.isUndefinedOrNull())
75 RELEASE_AND_RETURN(scope, JSValue::encode(JSMap::create(globalObject, vm, mapStructure)));
76
77 if (auto* iterableMap = jsDynamicCast<JSMap*>(vm, iterable)) {
78 if (iterableMap->canCloneFastAndNonObservable(mapStructure))
79 RELEASE_AND_RETURN(scope, JSValue::encode(iterableMap->clone(globalObject, vm, mapStructure)));
80 }
81
82 JSMap* map = JSMap::create(globalObject, vm, mapStructure);
83 RETURN_IF_EXCEPTION(scope, encodedJSValue());
84
85 JSValue adderFunction = map->JSObject::get(globalObject, vm.propertyNames->set);
86 RETURN_IF_EXCEPTION(scope, encodedJSValue());
87
88 CallData adderFunctionCallData;
89 CallType adderFunctionCallType = getCallData(vm, adderFunction, adderFunctionCallData);
90 if (adderFunctionCallType == CallType::None)
91 return JSValue::encode(throwTypeError(globalObject, scope));
92
93 scope.release();
94 forEachInIterable(globalObject, iterable, [&](VM& vm, JSGlobalObject* globalObject, JSValue nextItem) {
95 auto scope = DECLARE_THROW_SCOPE(vm);
96 if (!nextItem.isObject()) {
97 throwTypeError(globalObject, scope);
98 return;
99 }
100
101 JSValue key = nextItem.get(globalObject, static_cast<unsigned>(0));
102 RETURN_IF_EXCEPTION(scope, void());
103
104 JSValue value = nextItem.get(globalObject, static_cast<unsigned>(1));
105 RETURN_IF_EXCEPTION(scope, void());
106
107 MarkedArgumentBuffer arguments;
108 arguments.append(key);
109 arguments.append(value);
110 ASSERT(!arguments.hasOverflowed());
111 scope.release();
112 call(globalObject, adderFunction, adderFunctionCallType, adderFunctionCallData, map, arguments);
113 });
114
115 return JSValue::encode(map);
116}
117
118EncodedJSValue JSC_HOST_CALL mapPrivateFuncMapBucketHead(JSGlobalObject* globalObject, CallFrame* callFrame)
119{
120 ASSERT_UNUSED(globalObject, jsDynamicCast<JSMap*>(globalObject->vm(), callFrame->argument(0)));
121 JSMap* map = jsCast<JSMap*>(callFrame->uncheckedArgument(0));
122 auto* head = map->head();
123 ASSERT(head);
124 return JSValue::encode(head);
125}
126
127EncodedJSValue JSC_HOST_CALL mapPrivateFuncMapBucketNext(JSGlobalObject* globalObject, CallFrame* callFrame)
128{
129 ASSERT(jsDynamicCast<JSMap::BucketType*>(globalObject->vm(), callFrame->argument(0)));
130 auto* bucket = jsCast<JSMap::BucketType*>(callFrame->uncheckedArgument(0));
131 ASSERT(bucket);
132 bucket = bucket->next();
133 while (bucket) {
134 if (!bucket->deleted())
135 return JSValue::encode(bucket);
136 bucket = bucket->next();
137 }
138 return JSValue::encode(globalObject->vm().sentinelMapBucket());
139}
140
141EncodedJSValue JSC_HOST_CALL mapPrivateFuncMapBucketKey(JSGlobalObject* globalObject, CallFrame* callFrame)
142{
143 ASSERT_UNUSED(globalObject, jsDynamicCast<JSMap::BucketType*>(globalObject->vm(), callFrame->argument(0)));
144 auto* bucket = jsCast<JSMap::BucketType*>(callFrame->uncheckedArgument(0));
145 ASSERT(bucket);
146 return JSValue::encode(bucket->key());
147}
148
149EncodedJSValue JSC_HOST_CALL mapPrivateFuncMapBucketValue(JSGlobalObject* globalObject, CallFrame* callFrame)
150{
151 ASSERT_UNUSED(globalObject, jsDynamicCast<JSMap::BucketType*>(globalObject->vm(), callFrame->argument(0)));
152 auto* bucket = jsCast<JSMap::BucketType*>(callFrame->uncheckedArgument(0));
153 ASSERT(bucket);
154 return JSValue::encode(bucket->value());
155}
156
157}
158