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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* Copyright (c) 2010 Google Inc. All rights reserved.
* Copyright (C) 2012 Research In Motion Limited. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
#include "config.h"
#include "ScriptCallStackFactory.h"
#include "InspectorInstrumentation.h"
#include "JSDOMBinding.h"
#include "JSMainThreadExecState.h"
#include "ScriptArguments.h"
#include "ScriptCallFrame.h"
#include "ScriptCallStack.h"
#include "ScriptValue.h"
#include <interpreter/CallFrame.h>
#include <interpreter/Interpreter.h>
#include <runtime/ArgList.h>
#include <runtime/JSCJSValue.h>
#include <runtime/JSFunction.h>
#include <runtime/VM.h>
#include <wtf/text/WTFString.h>
using namespace JSC;
namespace WebCore {
class ScriptExecutionContext;
PassRefPtr<ScriptCallStack> createScriptCallStack(size_t maxStackSize, bool emptyIsAllowed)
{
Vector<ScriptCallFrame> frames;
if (JSC::ExecState* exec = JSMainThreadExecState::currentState()) {
Vector<StackFrame> stackTrace;
Interpreter::getStackTrace(&exec->vm(), stackTrace, maxStackSize);
for (size_t i = 0; i < stackTrace.size(); i++) {
unsigned line;
unsigned column;
stackTrace[i].computeLineAndColumn(line, column);
frames.append(ScriptCallFrame(stackTrace[i].friendlyFunctionName(exec), stackTrace[i].friendlySourceURL(), line, column));
}
}
if (frames.isEmpty() && !emptyIsAllowed) {
// No frames found. It may happen in the case where
// a bound function is called from native code for example.
// Fallback to setting lineNumber to 0, and source and function name to "undefined".
frames.append(ScriptCallFrame("undefined", "undefined", 0, 0));
}
return ScriptCallStack::create(frames);
}
PassRefPtr<ScriptCallStack> createScriptCallStack(JSC::ExecState* exec, size_t maxStackSize)
{
Vector<ScriptCallFrame> frames;
Vector<StackFrame> stackTrace;
Interpreter::getStackTrace(&exec->vm(), stackTrace, maxStackSize + 1);
for (size_t i = stackTrace.size() == 1 ? 0 : 1; i < stackTrace.size(); i++) {
// This early exit is necessary to maintain our old behaviour
// but the stack trace we produce now is complete and handles all
// ways in which code may be running
if (!stackTrace[i].callee && frames.size())
break;
String functionName = stackTrace[i].friendlyFunctionName(exec);
unsigned line;
unsigned column;
stackTrace[i].computeLineAndColumn(line, column);
frames.append(ScriptCallFrame(functionName, stackTrace[i].sourceURL, line, column));
}
return ScriptCallStack::create(frames);
}
PassRefPtr<ScriptCallStack> createScriptCallStackFromException(JSC::ExecState* exec, JSC::JSValue& exception, size_t maxStackSize)
{
Vector<ScriptCallFrame> frames;
RefCountedArray<StackFrame> stackTrace = exec->vm().exceptionStack();
for (size_t i = 0; i < stackTrace.size() && i < maxStackSize; i++) {
if (!stackTrace[i].callee && frames.size())
break;
String functionName = stackTrace[i].friendlyFunctionName(exec);
unsigned line;
unsigned column;
stackTrace[i].computeLineAndColumn(line, column);
frames.append(ScriptCallFrame(functionName, stackTrace[i].sourceURL, line, column));
}
// FIXME: <http://webkit.org/b/115087> Web Inspector: WebCore::reportException should not evaluate JavaScript handling exceptions
// Fallback to getting at least the line and sourceURL from the exception if it has values and the exceptionStack doesn't.
if (frames.size() > 0) {
const ScriptCallFrame& firstCallFrame = frames.first();
JSObject* exceptionObject = exception.toObject(exec);
if (exception.isObject() && firstCallFrame.sourceURL().isEmpty()) {
JSValue lineValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "line"));
int lineNumber = lineValue && lineValue.isNumber() ? int(lineValue.toNumber(exec)) : 0;
JSValue sourceURLValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "sourceURL"));
String exceptionSourceURL = sourceURLValue && sourceURLValue.isString() ? sourceURLValue.toString(exec)->value(exec) : ASCIILiteral("undefined");
frames[0] = ScriptCallFrame(firstCallFrame.functionName(), exceptionSourceURL, lineNumber, 0);
}
}
return ScriptCallStack::create(frames);
}
PassRefPtr<ScriptCallStack> createScriptCallStackForConsole(JSC::ExecState* exec)
{
size_t maxStackSize = 1;
if (InspectorInstrumentation::hasFrontends()) {
ScriptExecutionContext* scriptExecutionContext = jsCast<JSDOMGlobalObject*>(exec->lexicalGlobalObject())->scriptExecutionContext();
if (InspectorInstrumentation::consoleAgentEnabled(scriptExecutionContext))
maxStackSize = ScriptCallStack::maxCallStackSizeToCapture;
}
return createScriptCallStack(exec, maxStackSize);
}
PassRefPtr<ScriptArguments> createScriptArguments(JSC::ExecState* exec, unsigned skipArgumentCount)
{
Vector<ScriptValue> arguments;
size_t argumentCount = exec->argumentCount();
for (size_t i = skipArgumentCount; i < argumentCount; ++i)
arguments.append(ScriptValue(exec->vm(), exec->argument(i)));
return ScriptArguments::create(exec, arguments);
}
} // namespace WebCore
|
