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/v8/ScriptCallStackFactory.h"
33
34 #include "bindings/v8/ScriptScope.h"
35 #include "bindings/v8/ScriptValue.h"
36 #include "bindings/v8/V8Binding.h"
37 #include "bindings/v8/V8Utilities.h"
38 #include "core/inspector/InspectorInstrumentation.h"
39 #include "core/inspector/ScriptArguments.h"
40 #include "core/inspector/ScriptCallFrame.h"
41 #include "core/inspector/ScriptCallStack.h"
42 #include "platform/JSONValues.h"
43 #include "wtf/text/StringBuilder.h"
44
45 #include <v8-debug.h>
46
47 namespace WebCore {
48
49 class ExecutionContext;
50
toScriptCallFrame(v8::Handle<v8::StackFrame> frame)51 static ScriptCallFrame toScriptCallFrame(v8::Handle<v8::StackFrame> frame)
52 {
53 StringBuilder stringBuilder;
54 stringBuilder.appendNumber(frame->GetScriptId());
55 String scriptId = stringBuilder.toString();
56 String sourceName;
57 v8::Local<v8::String> sourceNameValue(frame->GetScriptNameOrSourceURL());
58 if (!sourceNameValue.IsEmpty())
59 sourceName = toCoreString(sourceNameValue);
60
61 String functionName;
62 v8::Local<v8::String> functionNameValue(frame->GetFunctionName());
63 if (!functionNameValue.IsEmpty())
64 functionName = toCoreString(functionNameValue);
65
66 int sourceLineNumber = frame->GetLineNumber();
67 int sourceColumn = frame->GetColumn();
68 return ScriptCallFrame(functionName, scriptId, sourceName, sourceLineNumber, sourceColumn);
69 }
70
toScriptCallFramesVector(v8::Handle<v8::StackTrace> stackTrace,Vector<ScriptCallFrame> & scriptCallFrames,size_t maxStackSize,bool emptyStackIsAllowed,v8::Isolate * isolate)71 static void toScriptCallFramesVector(v8::Handle<v8::StackTrace> stackTrace, Vector<ScriptCallFrame>& scriptCallFrames, size_t maxStackSize, bool emptyStackIsAllowed, v8::Isolate* isolate)
72 {
73 ASSERT(isolate->InContext());
74 int frameCount = stackTrace->GetFrameCount();
75 if (frameCount > static_cast<int>(maxStackSize))
76 frameCount = maxStackSize;
77 for (int i = 0; i < frameCount; i++) {
78 v8::Local<v8::StackFrame> stackFrame = stackTrace->GetFrame(i);
79 scriptCallFrames.append(toScriptCallFrame(stackFrame));
80 }
81 if (!frameCount && !emptyStackIsAllowed) {
82 // Successfully grabbed stack trace, but there are no frames. It may happen in case
83 // when a bound function is called from native code for example.
84 // Fallback to setting lineNumber to 0, and source and function name to "undefined".
85 scriptCallFrames.append(ScriptCallFrame("undefined", "", "undefined", 0));
86 }
87 }
88
createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace,size_t maxStackSize,bool emptyStackIsAllowed,v8::Isolate * isolate)89 static PassRefPtr<ScriptCallStack> createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace, size_t maxStackSize, bool emptyStackIsAllowed, v8::Isolate* isolate)
90 {
91 ASSERT(isolate->InContext());
92 v8::HandleScope scope(isolate);
93 Vector<ScriptCallFrame> scriptCallFrames;
94 toScriptCallFramesVector(stackTrace, scriptCallFrames, maxStackSize, emptyStackIsAllowed, isolate);
95 return ScriptCallStack::create(scriptCallFrames);
96 }
97
createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace,size_t maxStackSize,v8::Isolate * isolate)98 PassRefPtr<ScriptCallStack> createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace, size_t maxStackSize, v8::Isolate* isolate)
99 {
100 return createScriptCallStack(stackTrace, maxStackSize, true, isolate);
101 }
102
createScriptCallStack(size_t maxStackSize,bool emptyStackIsAllowed)103 PassRefPtr<ScriptCallStack> createScriptCallStack(size_t maxStackSize, bool emptyStackIsAllowed)
104 {
105 v8::Isolate* isolate = v8::Isolate::GetCurrent();
106 if (!isolate->InContext())
107 return 0;
108 v8::HandleScope handleScope(isolate);
109 v8::Handle<v8::StackTrace> stackTrace(v8::StackTrace::CurrentStackTrace(isolate, maxStackSize, stackTraceOptions));
110 return createScriptCallStack(stackTrace, maxStackSize, emptyStackIsAllowed, isolate);
111 }
112
createScriptCallStackForConsole(size_t maxStackSize)113 PassRefPtr<ScriptCallStack> createScriptCallStackForConsole(size_t maxStackSize)
114 {
115 size_t stackSize = 1;
116 if (InspectorInstrumentation::hasFrontends()) {
117 ExecutionContext* executionContext = getExecutionContext();
118 if (InspectorInstrumentation::consoleAgentEnabled(executionContext))
119 stackSize = maxStackSize;
120 }
121 return createScriptCallStack(stackSize);
122 }
123
createScriptArguments(const v8::FunctionCallbackInfo<v8::Value> & v8arguments,unsigned skipArgumentCount)124 PassRefPtr<ScriptArguments> createScriptArguments(const v8::FunctionCallbackInfo<v8::Value>& v8arguments, unsigned skipArgumentCount)
125 {
126 v8::Isolate* isolate = v8arguments.GetIsolate();
127 v8::HandleScope scope(isolate);
128 v8::Local<v8::Context> context = isolate->GetCurrentContext();
129 ScriptState* state = ScriptState::forContext(context);
130
131 Vector<ScriptValue> arguments;
132 for (int i = skipArgumentCount; i < v8arguments.Length(); ++i)
133 arguments.append(ScriptValue(v8arguments[i], isolate));
134
135 return ScriptArguments::create(state, arguments);
136 }
137
138 } // namespace WebCore
139