1/*
2 * Copyright (C) 2016-2019 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 "JSWebAssemblyTable.h"
28
29#if ENABLE(WEBASSEMBLY)
30
31#include "JSCInlines.h"
32#include "JSWebAssemblyInstance.h"
33#include <wtf/CheckedArithmetic.h>
34
35namespace JSC {
36
37const ClassInfo JSWebAssemblyTable::s_info = { "WebAssembly.Table", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSWebAssemblyTable) };
38
39JSWebAssemblyTable* JSWebAssemblyTable::create(JSGlobalObject* globalObject, VM& vm, Structure* structure, Ref<Wasm::Table>&& table)
40{
41 auto throwScope = DECLARE_THROW_SCOPE(vm);
42
43 if (!globalObject->webAssemblyEnabled()) {
44 throwException(globalObject, throwScope, createEvalError(globalObject, globalObject->webAssemblyDisabledErrorMessage()));
45 return nullptr;
46 }
47
48 auto* instance = new (NotNull, allocateCell<JSWebAssemblyTable>(vm.heap)) JSWebAssemblyTable(vm, structure, WTFMove(table));
49 instance->table()->setOwner(instance);
50 instance->finishCreation(vm);
51 return instance;
52}
53
54Structure* JSWebAssemblyTable::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
55{
56 return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
57}
58
59JSWebAssemblyTable::JSWebAssemblyTable(VM& vm, Structure* structure, Ref<Wasm::Table>&& table)
60 : Base(vm, structure)
61 , m_table(WTFMove(table))
62{
63}
64
65void JSWebAssemblyTable::finishCreation(VM& vm)
66{
67 Base::finishCreation(vm);
68 ASSERT(inherits(vm, info()));
69}
70
71void JSWebAssemblyTable::destroy(JSCell* cell)
72{
73 static_cast<JSWebAssemblyTable*>(cell)->JSWebAssemblyTable::~JSWebAssemblyTable();
74}
75
76void JSWebAssemblyTable::visitChildren(JSCell* cell, SlotVisitor& visitor)
77{
78 JSWebAssemblyTable* thisObject = jsCast<JSWebAssemblyTable*>(cell);
79 ASSERT_GC_OBJECT_INHERITS(thisObject, info());
80
81 Base::visitChildren(thisObject, visitor);
82 thisObject->table()->visitAggregate(visitor);
83}
84
85bool JSWebAssemblyTable::grow(uint32_t delta)
86{
87 if (delta == 0)
88 return true;
89 return !!m_table->grow(delta);
90}
91
92JSValue JSWebAssemblyTable::get(uint32_t index)
93{
94 RELEASE_ASSERT(index < length());
95 return m_table->get(index);
96}
97
98void JSWebAssemblyTable::set(uint32_t index, JSValue value)
99{
100 RELEASE_ASSERT(index < length());
101 RELEASE_ASSERT(m_table->isAnyrefTable());
102 m_table->set(index, value);
103}
104
105void JSWebAssemblyTable::set(uint32_t index, WebAssemblyFunction* function)
106{
107 RELEASE_ASSERT(index < length());
108 RELEASE_ASSERT(m_table->asFuncrefTable());
109 auto& subThis = *static_cast<Wasm::FuncRefTable*>(&m_table.get());
110 subThis.setFunction(index, function, function->importableFunction(), &function->instance()->instance());
111}
112
113void JSWebAssemblyTable::set(uint32_t index, WebAssemblyWrapperFunction* function)
114{
115 RELEASE_ASSERT(index < length());
116 RELEASE_ASSERT(m_table->asFuncrefTable());
117 auto& subThis = *static_cast<Wasm::FuncRefTable*>(&m_table.get());
118 subThis.setFunction(index, function, function->importableFunction(), &function->instance()->instance());
119}
120
121void JSWebAssemblyTable::clear(uint32_t index)
122{
123 RELEASE_ASSERT(index < length());
124 m_table->clear(index);
125}
126
127} // namespace JSC
128
129#endif // ENABLE(WEBASSEMBLY)
130