1/*
2 * Copyright (C) 2008-2019 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Cameron Zwarich <[email protected]>
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
15 * its contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#pragma once
31
32#include "GlobalCodeBlock.h"
33
34namespace JSC {
35
36class EvalCodeBlock final : public GlobalCodeBlock {
37public:
38 typedef GlobalCodeBlock Base;
39 DECLARE_INFO;
40
41 template<typename, SubspaceAccess>
42 static IsoSubspace* subspaceFor(VM& vm)
43 {
44 return &vm.codeBlockSpace.space;
45 }
46
47 static EvalCodeBlock* create(VM& vm, CopyParsedBlockTag, EvalCodeBlock& other)
48 {
49 EvalCodeBlock* instance = new (NotNull, allocateCell<EvalCodeBlock>(vm.heap))
50 EvalCodeBlock(vm, vm.evalCodeBlockStructure.get(), CopyParsedBlock, other);
51 instance->finishCreation(vm, CopyParsedBlock, other);
52 return instance;
53 }
54
55 static EvalCodeBlock* create(VM& vm, EvalExecutable* ownerExecutable, UnlinkedEvalCodeBlock* unlinkedCodeBlock, JSScope* scope)
56 {
57 EvalCodeBlock* instance = new (NotNull, allocateCell<EvalCodeBlock>(vm.heap))
58 EvalCodeBlock(vm, vm.evalCodeBlockStructure.get(), ownerExecutable, unlinkedCodeBlock, scope);
59 if (!instance->finishCreation(vm, ownerExecutable, unlinkedCodeBlock, scope))
60 return nullptr;
61 return instance;
62 }
63
64 static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
65 {
66 return Structure::create(vm, globalObject, prototype, TypeInfo(CodeBlockType, StructureFlags), info());
67 }
68
69 UnlinkedEvalCodeBlock* unlinkedEvalCodeBlock() const { return jsCast<UnlinkedEvalCodeBlock*>(unlinkedCodeBlock()); }
70
71private:
72 EvalCodeBlock(VM& vm, Structure* structure, CopyParsedBlockTag, EvalCodeBlock& other)
73 : GlobalCodeBlock(vm, structure, CopyParsedBlock, other)
74 {
75 }
76
77 EvalCodeBlock(VM& vm, Structure* structure, EvalExecutable* ownerExecutable, UnlinkedEvalCodeBlock* unlinkedCodeBlock, JSScope* scope)
78 : GlobalCodeBlock(vm, structure, ownerExecutable, unlinkedCodeBlock, scope)
79 {
80 }
81};
82static_assert(sizeof(EvalCodeBlock) == sizeof(CodeBlock), "Subclasses of CodeBlock should be the same size to share IsoSubspace");
83
84} // namespace JSC
85