1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
* Copyright (C) 2016-2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <JavaScriptCore/BytecodeIndex.h>
#include <JavaScriptCore/Heap.h>
#include <JavaScriptCore/LineColumn.h>
#include <JavaScriptCore/SlotVisitorMacros.h>
#include <JavaScriptCore/VM.h>
#include <JavaScriptCore/WasmIndexOrName.h>
#include <JavaScriptCore/WriteBarrier.h>
#include <limits.h>
#include <wtf/Variant.h>
namespace JSC {
class CodeBlock;
class JSObject;
struct JSFrameData {
WriteBarrier<JSCell> callee;
WriteBarrier<CodeBlock> codeBlock;
BytecodeIndex bytecodeIndex;
bool m_isAsyncFrame { false };
};
struct WasmFrameData {
Wasm::IndexOrName functionIndexOrName;
size_t functionIndex { 0 };
};
class StackFrame {
public:
using FrameData = Variant<JSFrameData, WasmFrameData>;
StackFrame(VM&, JSCell* owner, JSCell* callee);
StackFrame(VM&, JSCell* owner, JSCell* callee, CodeBlock*, BytecodeIndex);
StackFrame(VM&, JSCell* owner, JSCell* callee, CodeBlock*, BytecodeIndex, bool isAsyncFrame);
StackFrame(VM&, JSCell* owner, CodeBlock*, BytecodeIndex);
StackFrame(VM&, JSCell* owner, JSCell* callee, bool isAsyncFrame);
StackFrame(Wasm::IndexOrName);
StackFrame(Wasm::IndexOrName, size_t functionIndex);
StackFrame() = default;
bool hasLineAndColumnInfo() const
{
if (auto* jsFrame = std::get_if<JSFrameData>(&m_frameData))
return !!jsFrame->codeBlock;
return false;
}
CodeBlock* codeBlock() const
{
if (auto* jsFrame = std::get_if<JSFrameData>(&m_frameData))
return jsFrame->codeBlock.get();
return nullptr;
}
bool isAsyncFrameWithoutCodeBlock() const
{
if (auto* jsFrame = std::get_if<JSFrameData>(&m_frameData))
return jsFrame->m_isAsyncFrame && !codeBlock();
return false;
}
LineColumn computeLineAndColumn() const;
String functionName(VM&) const;
SourceID sourceID() const;
String sourceURL(VM&) const;
String sourceURLStripped(VM&) const;
String toString(VM&) const;
bool hasBytecodeIndex() const;
BytecodeIndex bytecodeIndex() const;
template<typename Visitor>
void visitAggregate(Visitor&);
bool isMarked(VM&) const;
private:
FrameData m_frameData { JSFrameData { } };
};
} // namespace JSC
|
