1 /*
2 * Copyright (c) 2010 Google 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "ScriptCallStackFactory.h"
33
34 #include "JSDOMBinding.h"
35 #include "ScriptArguments.h"
36 #include "ScriptCallFrame.h"
37 #include "ScriptCallStack.h"
38 #include "ScriptValue.h"
39 #include <interpreter/CallFrame.h>
40 #include <interpreter/Interpreter.h>
41 #include <runtime/ArgList.h>
42 #include <runtime/JSFunction.h>
43 #include <runtime/JSGlobalData.h>
44 #include <runtime/JSValue.h>
45 #include <runtime/UString.h>
46
47 using namespace JSC;
48
49 namespace WebCore {
50
createScriptCallStack(size_t,bool)51 PassRefPtr<ScriptCallStack> createScriptCallStack(size_t, bool)
52 {
53 return 0;
54 }
55
createScriptCallStack(JSC::ExecState * exec,size_t maxStackSize)56 PassRefPtr<ScriptCallStack> createScriptCallStack(JSC::ExecState* exec, size_t maxStackSize)
57 {
58 Vector<ScriptCallFrame> frames;
59 CallFrame* callFrame = exec;
60 while (true) {
61 ASSERT(callFrame);
62 int signedLineNumber;
63 intptr_t sourceID;
64 UString urlString;
65 JSValue function;
66
67 exec->interpreter()->retrieveLastCaller(callFrame, signedLineNumber, sourceID, urlString, function);
68 UString functionName;
69 if (function)
70 functionName = asFunction(function)->name(exec);
71 else {
72 // Caller is unknown, but if frames is empty we should still add the frame, because
73 // something called us, and gave us arguments.
74 if (!frames.isEmpty())
75 break;
76 }
77 unsigned lineNumber = signedLineNumber >= 0 ? signedLineNumber : 0;
78 frames.append(ScriptCallFrame(ustringToString(functionName), ustringToString(urlString), lineNumber));
79 if (!function || frames.size() == maxStackSize)
80 break;
81 callFrame = callFrame->callerFrame();
82 }
83 return ScriptCallStack::create(frames);
84 }
85
createScriptArguments(JSC::ExecState * exec,unsigned skipArgumentCount)86 PassRefPtr<ScriptArguments> createScriptArguments(JSC::ExecState* exec, unsigned skipArgumentCount)
87 {
88 Vector<ScriptValue> arguments;
89 size_t argumentCount = exec->argumentCount();
90 for (size_t i = skipArgumentCount; i < argumentCount; ++i)
91 arguments.append(ScriptValue(exec->globalData(), exec->argument(i)));
92 return ScriptArguments::create(exec, arguments);
93 }
94
95 } // namespace WebCore
96