1/*
2 * Copyright (C) 2015-2019 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 "Exception.h"
28
29#include "Interpreter.h"
30#include "JSCInlines.h"
31
32namespace JSC {
33
34const ClassInfo Exception::s_info = { "Exception", nullptr, nullptr, nullptr, CREATE_METHOD_TABLE(Exception) };
35
36Exception* Exception::create(VM& vm, JSValue thrownValue, StackCaptureAction action)
37{
38 Exception* result = new (NotNull, allocateCell<Exception>(vm.heap)) Exception(vm);
39 result->finishCreation(vm, thrownValue, action);
40 return result;
41}
42
43void Exception::destroy(JSCell* cell)
44{
45 Exception* exception = static_cast<Exception*>(cell);
46 exception->~Exception();
47}
48
49Structure* Exception::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
50{
51 return Structure::create(vm, globalObject, prototype, TypeInfo(CellType, StructureFlags), info());
52}
53
54void Exception::visitChildren(JSCell* cell, SlotVisitor& visitor)
55{
56 Exception* thisObject = jsCast<Exception*>(cell);
57 ASSERT_GC_OBJECT_INHERITS(thisObject, info());
58 Base::visitChildren(thisObject, visitor);
59
60 visitor.append(thisObject->m_value);
61 for (StackFrame& frame : thisObject->m_stack)
62 frame.visitChildren(visitor);
63}
64
65Exception::Exception(VM& vm)
66 : Base(vm, vm.exceptionStructure.get())
67{
68}
69
70Exception::~Exception()
71{
72}
73
74void Exception::finishCreation(VM& vm, JSValue thrownValue, StackCaptureAction action)
75{
76 Base::finishCreation(vm);
77
78 m_value.set(vm, this, thrownValue);
79
80 Vector<StackFrame> stackTrace;
81 if (action == StackCaptureAction::CaptureStack)
82 vm.interpreter->getStackTrace(this, stackTrace, 0, Options::exceptionStackTraceLimit());
83 m_stack = WTFMove(stackTrace);
84}
85
86} // namespace JSC
87