1/*
2 * Copyright (C) 2008-2016 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca>
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 "CodeBlock.h"
33#include "UnlinkedFunctionCodeBlock.h"
34
35namespace JSC {
36
37class FunctionCodeBlock final : public CodeBlock {
38public:
39 typedef CodeBlock Base;
40 DECLARE_INFO;
41
42 template<typename, SubspaceAccess>
43 static IsoSubspace* subspaceFor(VM& vm)
44 {
45 return &vm.codeBlockSpace.space;
46 }
47
48 static FunctionCodeBlock* create(VM* vm, CopyParsedBlockTag, FunctionCodeBlock& other)
49 {
50 FunctionCodeBlock* instance = new (NotNull, allocateCell<FunctionCodeBlock>(vm->heap))
51 FunctionCodeBlock(vm, vm->functionCodeBlockStructure.get(), CopyParsedBlock, other);
52 instance->finishCreation(*vm, CopyParsedBlock, other);
53 return instance;
54 }
55
56 static FunctionCodeBlock* create(VM* vm, FunctionExecutable* ownerExecutable, UnlinkedFunctionCodeBlock* unlinkedCodeBlock, JSScope* scope)
57 {
58 FunctionCodeBlock* instance = new (NotNull, allocateCell<FunctionCodeBlock>(vm->heap))
59 FunctionCodeBlock(vm, vm->functionCodeBlockStructure.get(), ownerExecutable, unlinkedCodeBlock, scope);
60 if (!instance->finishCreation(*vm, ownerExecutable, unlinkedCodeBlock, scope))
61 return nullptr;
62 return instance;
63 }
64
65 static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
66 {
67 return Structure::create(vm, globalObject, prototype, TypeInfo(CodeBlockType, StructureFlags), info());
68 }
69
70private:
71 FunctionCodeBlock(VM* vm, Structure* structure, CopyParsedBlockTag, FunctionCodeBlock& other)
72 : CodeBlock(vm, structure, CopyParsedBlock, other)
73 {
74 }
75
76 FunctionCodeBlock(VM* vm, Structure* structure, FunctionExecutable* ownerExecutable, UnlinkedFunctionCodeBlock* unlinkedCodeBlock, JSScope* scope)
77 : CodeBlock(vm, structure, ownerExecutable, unlinkedCodeBlock, scope)
78 {
79 }
80};
81static_assert(sizeof(FunctionCodeBlock) == sizeof(CodeBlock), "Subclasses of CodeBlock should be the same size to share IsoSubspace");
82
83} // namespace JSC
84