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
47using namespace JSC;
48
49namespace WebCore {
50
51PassRefPtr<ScriptCallStack> createScriptCallStack(size_t, bool)
52{
53    return 0;
54}
55
56PassRefPtr<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
86PassRefPtr<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