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 "bindings/core/v8/ScriptCallStackFactory.h"
33
34#include "bindings/core/v8/ScriptValue.h"
35#include "bindings/core/v8/V8Binding.h"
36#include "core/inspector/InspectorInstrumentation.h"
37#include "core/inspector/ScriptArguments.h"
38#include "core/inspector/ScriptCallFrame.h"
39#include "core/inspector/ScriptCallStack.h"
40#include "platform/JSONValues.h"
41#include "wtf/text/StringBuilder.h"
42
43#include <v8-debug.h>
44
45namespace blink {
46
47class ExecutionContext;
48
49static ScriptCallFrame toScriptCallFrame(v8::Handle<v8::StackFrame> frame)
50{
51    StringBuilder stringBuilder;
52    stringBuilder.appendNumber(frame->GetScriptId());
53    String scriptId = stringBuilder.toString();
54    String sourceName;
55    v8::Local<v8::String> sourceNameValue(frame->GetScriptNameOrSourceURL());
56    if (!sourceNameValue.IsEmpty())
57        sourceName = toCoreString(sourceNameValue);
58
59    String functionName;
60    v8::Local<v8::String> functionNameValue(frame->GetFunctionName());
61    if (!functionNameValue.IsEmpty())
62        functionName = toCoreString(functionNameValue);
63
64    int sourceLineNumber = frame->GetLineNumber();
65    int sourceColumn = frame->GetColumn();
66    return ScriptCallFrame(functionName, scriptId, sourceName, sourceLineNumber, sourceColumn);
67}
68
69static void toScriptCallFramesVector(v8::Handle<v8::StackTrace> stackTrace, Vector<ScriptCallFrame>& scriptCallFrames, size_t maxStackSize, bool emptyStackIsAllowed, v8::Isolate* isolate)
70{
71    ASSERT(isolate->InContext());
72    int frameCount = stackTrace->GetFrameCount();
73    if (frameCount > static_cast<int>(maxStackSize))
74        frameCount = maxStackSize;
75    for (int i = 0; i < frameCount; i++) {
76        v8::Local<v8::StackFrame> stackFrame = stackTrace->GetFrame(i);
77        scriptCallFrames.append(toScriptCallFrame(stackFrame));
78    }
79    if (!frameCount && !emptyStackIsAllowed) {
80        // Successfully grabbed stack trace, but there are no frames. It may happen in case
81        // when a bound function is called from native code for example.
82        // Fallback to setting lineNumber to 0, and source and function name to "undefined".
83        scriptCallFrames.append(ScriptCallFrame());
84    }
85}
86
87static PassRefPtrWillBeRawPtr<ScriptCallStack> createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace, size_t maxStackSize, bool emptyStackIsAllowed, v8::Isolate* isolate)
88{
89    ASSERT(isolate->InContext());
90    v8::HandleScope scope(isolate);
91    Vector<ScriptCallFrame> scriptCallFrames;
92    toScriptCallFramesVector(stackTrace, scriptCallFrames, maxStackSize, emptyStackIsAllowed, isolate);
93    RefPtrWillBeRawPtr<ScriptCallStack> callStack = ScriptCallStack::create(scriptCallFrames);
94    if (InspectorInstrumentation::hasFrontends() && maxStackSize > 1)
95        InspectorInstrumentation::appendAsyncCallStack(currentExecutionContext(isolate), callStack.get());
96    return callStack.release();
97}
98
99PassRefPtrWillBeRawPtr<ScriptCallStack> createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace, size_t maxStackSize, v8::Isolate* isolate)
100{
101    return createScriptCallStack(stackTrace, maxStackSize, true, isolate);
102}
103
104PassRefPtrWillBeRawPtr<ScriptCallStack> createScriptCallStack(size_t maxStackSize, bool emptyStackIsAllowed)
105{
106    v8::Isolate* isolate = v8::Isolate::GetCurrent();
107    if (!isolate->InContext())
108        return nullptr;
109    v8::HandleScope handleScope(isolate);
110    v8::Handle<v8::StackTrace> stackTrace(v8::StackTrace::CurrentStackTrace(isolate, maxStackSize, stackTraceOptions));
111    return createScriptCallStack(stackTrace, maxStackSize, emptyStackIsAllowed, isolate);
112}
113
114PassRefPtrWillBeRawPtr<ScriptCallStack> createScriptCallStackForConsole(size_t maxStackSize, bool emptyStackIsAllowed)
115{
116    size_t stackSize = 1;
117    if (InspectorInstrumentation::hasFrontends()) {
118        v8::Isolate* isolate = v8::Isolate::GetCurrent();
119        if (!isolate->InContext())
120            return nullptr;
121        if (InspectorInstrumentation::consoleAgentEnabled(currentExecutionContext(isolate)))
122            stackSize = maxStackSize;
123    }
124    return createScriptCallStack(stackSize, emptyStackIsAllowed);
125}
126
127PassRefPtrWillBeRawPtr<ScriptArguments> createScriptArguments(ScriptState* scriptState, const v8::FunctionCallbackInfo<v8::Value>& v8arguments, unsigned skipArgumentCount)
128{
129    Vector<ScriptValue> arguments;
130    for (int i = skipArgumentCount; i < v8arguments.Length(); ++i)
131        arguments.append(ScriptValue(scriptState, v8arguments[i]));
132
133    return ScriptArguments::create(scriptState, arguments);
134}
135
136} // namespace blink
137