1 /*
2 * Copyright (c) 2010-2011 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/ScriptDebugServer.h"
33
34 #include "bindings/core/v8/ScopedPersistent.h"
35 #include "bindings/core/v8/ScriptCallStackFactory.h"
36 #include "bindings/core/v8/ScriptController.h"
37 #include "bindings/core/v8/ScriptSourceCode.h"
38 #include "bindings/core/v8/ScriptValue.h"
39 #include "bindings/core/v8/V8Binding.h"
40 #include "bindings/core/v8/V8JavaScriptCallFrame.h"
41 #include "bindings/core/v8/V8ScriptRunner.h"
42 #include "core/inspector/JavaScriptCallFrame.h"
43 #include "core/inspector/ScriptDebugListener.h"
44 #include "platform/JSONValues.h"
45 #include "public/platform/Platform.h"
46 #include "public/platform/WebData.h"
47 #include "wtf/StdLibExtras.h"
48 #include "wtf/Vector.h"
49 #include "wtf/dtoa/utils.h"
50 #include "wtf/text/CString.h"
51
52 namespace blink {
53
54 namespace {
55
56 class ClientDataImpl : public v8::Debug::ClientData {
57 public:
ClientDataImpl(PassOwnPtr<ScriptDebugServer::Task> task)58 ClientDataImpl(PassOwnPtr<ScriptDebugServer::Task> task) : m_task(task) { }
~ClientDataImpl()59 virtual ~ClientDataImpl() { }
task() const60 ScriptDebugServer::Task* task() const { return m_task.get(); }
61 private:
62 OwnPtr<ScriptDebugServer::Task> m_task;
63 };
64
65 const char stepIntoV8MethodName[] = "stepIntoStatement";
66 const char stepOutV8MethodName[] = "stepOutOfFunction";
67 }
68
callDebuggerMethod(const char * functionName,int argc,v8::Handle<v8::Value> argv[])69 v8::Local<v8::Value> ScriptDebugServer::callDebuggerMethod(const char* functionName, int argc, v8::Handle<v8::Value> argv[])
70 {
71 v8::Handle<v8::Object> debuggerScript = m_debuggerScript.newLocal(m_isolate);
72 v8::Handle<v8::Function> function = v8::Local<v8::Function>::Cast(debuggerScript->Get(v8AtomicString(m_isolate, functionName)));
73 ASSERT(m_isolate->InContext());
74 return V8ScriptRunner::callInternalFunction(function, debuggerScript, argc, argv, m_isolate);
75 }
76
ScriptDebugServer(v8::Isolate * isolate)77 ScriptDebugServer::ScriptDebugServer(v8::Isolate* isolate)
78 : m_pauseOnExceptionsState(DontPauseOnExceptions)
79 , m_breakpointsActivated(true)
80 , m_isolate(isolate)
81 , m_runningNestedMessageLoop(false)
82 {
83 }
84
~ScriptDebugServer()85 ScriptDebugServer::~ScriptDebugServer()
86 {
87 }
88
setBreakpoint(const String & sourceID,const ScriptBreakpoint & scriptBreakpoint,int * actualLineNumber,int * actualColumnNumber,bool interstatementLocation)89 String ScriptDebugServer::setBreakpoint(const String& sourceID, const ScriptBreakpoint& scriptBreakpoint, int* actualLineNumber, int* actualColumnNumber, bool interstatementLocation)
90 {
91 v8::HandleScope scope(m_isolate);
92 v8::Local<v8::Context> debuggerContext = v8::Debug::GetDebugContext();
93 v8::Context::Scope contextScope(debuggerContext);
94
95 v8::Local<v8::Object> info = v8::Object::New(m_isolate);
96 info->Set(v8AtomicString(m_isolate, "sourceID"), v8String(debuggerContext->GetIsolate(), sourceID));
97 info->Set(v8AtomicString(m_isolate, "lineNumber"), v8::Integer::New(debuggerContext->GetIsolate(), scriptBreakpoint.lineNumber));
98 info->Set(v8AtomicString(m_isolate, "columnNumber"), v8::Integer::New(debuggerContext->GetIsolate(), scriptBreakpoint.columnNumber));
99 info->Set(v8AtomicString(m_isolate, "interstatementLocation"), v8Boolean(interstatementLocation, debuggerContext->GetIsolate()));
100 info->Set(v8AtomicString(m_isolate, "condition"), v8String(debuggerContext->GetIsolate(), scriptBreakpoint.condition));
101
102 v8::Handle<v8::Function> setBreakpointFunction = v8::Local<v8::Function>::Cast(m_debuggerScript.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "setBreakpoint")));
103 v8::Handle<v8::Value> breakpointId = v8::Debug::Call(setBreakpointFunction, info);
104 if (breakpointId.IsEmpty() || !breakpointId->IsString())
105 return "";
106 *actualLineNumber = info->Get(v8AtomicString(m_isolate, "lineNumber"))->Int32Value();
107 *actualColumnNumber = info->Get(v8AtomicString(m_isolate, "columnNumber"))->Int32Value();
108 return toCoreString(breakpointId.As<v8::String>());
109 }
110
removeBreakpoint(const String & breakpointId)111 void ScriptDebugServer::removeBreakpoint(const String& breakpointId)
112 {
113 v8::HandleScope scope(m_isolate);
114 v8::Local<v8::Context> debuggerContext = v8::Debug::GetDebugContext();
115 v8::Context::Scope contextScope(debuggerContext);
116
117 v8::Local<v8::Object> info = v8::Object::New(m_isolate);
118 info->Set(v8AtomicString(m_isolate, "breakpointId"), v8String(debuggerContext->GetIsolate(), breakpointId));
119
120 v8::Handle<v8::Function> removeBreakpointFunction = v8::Local<v8::Function>::Cast(m_debuggerScript.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "removeBreakpoint")));
121 v8::Debug::Call(removeBreakpointFunction, info);
122 }
123
clearBreakpoints()124 void ScriptDebugServer::clearBreakpoints()
125 {
126 ensureDebuggerScriptCompiled();
127 v8::HandleScope scope(m_isolate);
128 v8::Local<v8::Context> debuggerContext = v8::Debug::GetDebugContext();
129 v8::Context::Scope contextScope(debuggerContext);
130
131 v8::Handle<v8::Function> clearBreakpoints = v8::Local<v8::Function>::Cast(m_debuggerScript.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "clearBreakpoints")));
132 v8::Debug::Call(clearBreakpoints);
133 }
134
setBreakpointsActivated(bool activated)135 void ScriptDebugServer::setBreakpointsActivated(bool activated)
136 {
137 ensureDebuggerScriptCompiled();
138 v8::HandleScope scope(m_isolate);
139 v8::Local<v8::Context> debuggerContext = v8::Debug::GetDebugContext();
140 v8::Context::Scope contextScope(debuggerContext);
141
142 v8::Local<v8::Object> info = v8::Object::New(m_isolate);
143 info->Set(v8AtomicString(m_isolate, "enabled"), v8::Boolean::New(m_isolate, activated));
144 v8::Handle<v8::Function> setBreakpointsActivated = v8::Local<v8::Function>::Cast(m_debuggerScript.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "setBreakpointsActivated")));
145 v8::Debug::Call(setBreakpointsActivated, info);
146
147 m_breakpointsActivated = activated;
148 }
149
pauseOnExceptionsState()150 ScriptDebugServer::PauseOnExceptionsState ScriptDebugServer::pauseOnExceptionsState()
151 {
152 ensureDebuggerScriptCompiled();
153 v8::HandleScope scope(m_isolate);
154 v8::Context::Scope contextScope(v8::Debug::GetDebugContext());
155
156 v8::Handle<v8::Value> argv[] = { v8Undefined() };
157 v8::Handle<v8::Value> result = callDebuggerMethod("pauseOnExceptionsState", 0, argv);
158 return static_cast<ScriptDebugServer::PauseOnExceptionsState>(result->Int32Value());
159 }
160
setPauseOnExceptionsState(PauseOnExceptionsState pauseOnExceptionsState)161 void ScriptDebugServer::setPauseOnExceptionsState(PauseOnExceptionsState pauseOnExceptionsState)
162 {
163 ensureDebuggerScriptCompiled();
164 v8::HandleScope scope(m_isolate);
165 v8::Context::Scope contextScope(v8::Debug::GetDebugContext());
166
167 v8::Handle<v8::Value> argv[] = { v8::Int32::New(m_isolate, pauseOnExceptionsState) };
168 callDebuggerMethod("setPauseOnExceptionsState", 1, argv);
169 }
170
setPauseOnNextStatement(bool pause)171 void ScriptDebugServer::setPauseOnNextStatement(bool pause)
172 {
173 ASSERT(!isPaused());
174 if (pause)
175 v8::Debug::DebugBreak(m_isolate);
176 else
177 v8::Debug::CancelDebugBreak(m_isolate);
178 }
179
pausingOnNextStatement()180 bool ScriptDebugServer::pausingOnNextStatement()
181 {
182 return v8::Debug::CheckDebugBreak(m_isolate);
183 }
184
canBreakProgram()185 bool ScriptDebugServer::canBreakProgram()
186 {
187 if (!m_breakpointsActivated)
188 return false;
189 return m_isolate->InContext();
190 }
191
breakProgram()192 void ScriptDebugServer::breakProgram()
193 {
194 if (isPaused()) {
195 ASSERT(!m_runningNestedMessageLoop);
196 v8::Handle<v8::Value> exception;
197 v8::Handle<v8::Array> hitBreakpoints;
198 handleProgramBreak(m_pausedScriptState.get(), m_executionState, exception, hitBreakpoints);
199 return;
200 }
201
202 if (!canBreakProgram())
203 return;
204
205 v8::HandleScope scope(m_isolate);
206 if (m_breakProgramCallbackTemplate.isEmpty()) {
207 v8::Handle<v8::FunctionTemplate> templ = v8::FunctionTemplate::New(m_isolate);
208 templ->SetCallHandler(&ScriptDebugServer::breakProgramCallback, v8::External::New(m_isolate, this));
209 m_breakProgramCallbackTemplate.set(m_isolate, templ);
210 }
211
212 v8::Handle<v8::Function> breakProgramFunction = m_breakProgramCallbackTemplate.newLocal(m_isolate)->GetFunction();
213 v8::Debug::Call(breakProgramFunction);
214 }
215
continueProgram()216 void ScriptDebugServer::continueProgram()
217 {
218 if (isPaused())
219 quitMessageLoopOnPause();
220 m_pausedScriptState.clear();
221 m_executionState.Clear();
222 }
223
stepIntoStatement()224 void ScriptDebugServer::stepIntoStatement()
225 {
226 ASSERT(isPaused());
227 ASSERT(!m_executionState.IsEmpty());
228 v8::HandleScope handleScope(m_isolate);
229 v8::Handle<v8::Value> argv[] = { m_executionState };
230 callDebuggerMethod(stepIntoV8MethodName, 1, argv);
231 continueProgram();
232 }
233
stepOverStatement()234 void ScriptDebugServer::stepOverStatement()
235 {
236 ASSERT(isPaused());
237 ASSERT(!m_executionState.IsEmpty());
238 v8::HandleScope handleScope(m_isolate);
239 v8::Handle<v8::Value> argv[] = { m_executionState };
240 callDebuggerMethod("stepOverStatement", 1, argv);
241 continueProgram();
242 }
243
stepOutOfFunction()244 void ScriptDebugServer::stepOutOfFunction()
245 {
246 ASSERT(isPaused());
247 ASSERT(!m_executionState.IsEmpty());
248 v8::HandleScope handleScope(m_isolate);
249 v8::Handle<v8::Value> argv[] = { m_executionState };
250 callDebuggerMethod(stepOutV8MethodName, 1, argv);
251 continueProgram();
252 }
253
setScriptSource(const String & sourceID,const String & newContent,bool preview,String * error,RefPtr<TypeBuilder::Debugger::SetScriptSourceError> & errorData,ScriptValue * newCallFrames,RefPtr<JSONObject> * result)254 bool ScriptDebugServer::setScriptSource(const String& sourceID, const String& newContent, bool preview, String* error, RefPtr<TypeBuilder::Debugger::SetScriptSourceError>& errorData, ScriptValue* newCallFrames, RefPtr<JSONObject>* result)
255 {
256 class EnableLiveEditScope {
257 public:
258 explicit EnableLiveEditScope(v8::Isolate* isolate) : m_isolate(isolate) { v8::Debug::SetLiveEditEnabled(m_isolate, true); }
259 ~EnableLiveEditScope() { v8::Debug::SetLiveEditEnabled(m_isolate, false); }
260 private:
261 v8::Isolate* m_isolate;
262 };
263
264 ensureDebuggerScriptCompiled();
265 v8::HandleScope scope(m_isolate);
266
267 OwnPtr<v8::Context::Scope> contextScope;
268 v8::Handle<v8::Context> debuggerContext = v8::Debug::GetDebugContext();
269 if (!isPaused())
270 contextScope = adoptPtr(new v8::Context::Scope(debuggerContext));
271
272 v8::Handle<v8::Value> argv[] = { v8String(m_isolate, sourceID), v8String(m_isolate, newContent), v8Boolean(preview, m_isolate) };
273
274 v8::Local<v8::Value> v8result;
275 {
276 EnableLiveEditScope enableLiveEditScope(m_isolate);
277 v8::TryCatch tryCatch;
278 tryCatch.SetVerbose(false);
279 v8result = callDebuggerMethod("liveEditScriptSource", 3, argv);
280 if (tryCatch.HasCaught()) {
281 v8::Local<v8::Message> message = tryCatch.Message();
282 if (!message.IsEmpty())
283 *error = toCoreStringWithUndefinedOrNullCheck(message->Get());
284 else
285 *error = "Unknown error.";
286 return false;
287 }
288 }
289 ASSERT(!v8result.IsEmpty());
290 v8::Local<v8::Object> resultTuple = v8result->ToObject();
291 int code = static_cast<int>(resultTuple->Get(0)->ToInteger()->Value());
292 switch (code) {
293 case 0:
294 {
295 v8::Local<v8::Value> normalResult = resultTuple->Get(1);
296 RefPtr<JSONValue> jsonResult = v8ToJSONValue(m_isolate, normalResult, JSONValue::maxDepth);
297 if (jsonResult)
298 *result = jsonResult->asObject();
299 // Call stack may have changed after if the edited function was on the stack.
300 if (!preview && isPaused())
301 *newCallFrames = currentCallFrames();
302 return true;
303 }
304 // Compile error.
305 case 1:
306 {
307 RefPtr<TypeBuilder::Debugger::SetScriptSourceError::CompileError> compileError =
308 TypeBuilder::Debugger::SetScriptSourceError::CompileError::create()
309 .setMessage(toCoreStringWithUndefinedOrNullCheck(resultTuple->Get(2)))
310 .setLineNumber(resultTuple->Get(3)->ToInteger()->Value())
311 .setColumnNumber(resultTuple->Get(4)->ToInteger()->Value());
312
313 *error = toCoreStringWithUndefinedOrNullCheck(resultTuple->Get(1));
314 errorData = TypeBuilder::Debugger::SetScriptSourceError::create();
315 errorData->setCompileError(compileError);
316 return false;
317 }
318 }
319 *error = "Unknown error.";
320 return false;
321 }
322
frameCount()323 int ScriptDebugServer::frameCount()
324 {
325 ASSERT(isPaused());
326 ASSERT(!m_executionState.IsEmpty());
327 v8::Handle<v8::Value> argv[] = { m_executionState };
328 v8::Handle<v8::Value> result = callDebuggerMethod("frameCount", WTF_ARRAY_LENGTH(argv), argv);
329 if (result->IsInt32())
330 return result->Int32Value();
331 return 0;
332 }
333
toJavaScriptCallFrameUnsafe(const ScriptValue & value)334 PassRefPtrWillBeRawPtr<JavaScriptCallFrame> ScriptDebugServer::toJavaScriptCallFrameUnsafe(const ScriptValue& value)
335 {
336 if (value.isEmpty())
337 return nullptr;
338 ASSERT(value.isObject());
339 return V8JavaScriptCallFrame::toImpl(v8::Handle<v8::Object>::Cast(value.v8ValueUnsafe()));
340 }
341
wrapCallFrames(int maximumLimit,ScopeInfoDetails scopeDetails)342 PassRefPtrWillBeRawPtr<JavaScriptCallFrame> ScriptDebugServer::wrapCallFrames(int maximumLimit, ScopeInfoDetails scopeDetails)
343 {
344 const int scopeBits = 2;
345 COMPILE_ASSERT(NoScopes < (1 << scopeBits), not_enough_bits_to_encode_ScopeInfoDetails);
346
347 ASSERT(maximumLimit >= 0);
348 int data = (maximumLimit << scopeBits) | scopeDetails;
349 v8::Handle<v8::Value> currentCallFrameV8;
350 if (m_executionState.IsEmpty()) {
351 v8::Handle<v8::Function> currentCallFrameFunction = v8::Local<v8::Function>::Cast(m_debuggerScript.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "currentCallFrame")));
352 currentCallFrameV8 = v8::Debug::Call(currentCallFrameFunction, v8::Integer::New(m_isolate, data));
353 } else {
354 v8::Handle<v8::Value> argv[] = { m_executionState, v8::Integer::New(m_isolate, data) };
355 currentCallFrameV8 = callDebuggerMethod("currentCallFrame", WTF_ARRAY_LENGTH(argv), argv);
356 }
357 ASSERT(!currentCallFrameV8.IsEmpty());
358 if (!currentCallFrameV8->IsObject())
359 return nullptr;
360 return JavaScriptCallFrame::create(v8::Debug::GetDebugContext(), v8::Handle<v8::Object>::Cast(currentCallFrameV8));
361 }
362
currentCallFramesInner(ScopeInfoDetails scopeDetails)363 ScriptValue ScriptDebugServer::currentCallFramesInner(ScopeInfoDetails scopeDetails)
364 {
365 if (!m_isolate->InContext())
366 return ScriptValue();
367 v8::HandleScope handleScope(m_isolate);
368
369 // Filter out stack traces entirely consisting of V8's internal scripts.
370 v8::Local<v8::StackTrace> stackTrace = v8::StackTrace::CurrentStackTrace(m_isolate, 1);
371 if (!stackTrace->GetFrameCount())
372 return ScriptValue();
373
374 RefPtrWillBeRawPtr<JavaScriptCallFrame> currentCallFrame = wrapCallFrames(0, scopeDetails);
375 if (!currentCallFrame)
376 return ScriptValue();
377
378 ScriptState* scriptState = m_pausedScriptState ? m_pausedScriptState.get() : ScriptState::current(m_isolate);
379 ScriptState::Scope scope(scriptState);
380 return ScriptValue(scriptState, toV8(currentCallFrame.release(), scriptState->context()->Global(), m_isolate));
381 }
382
currentCallFrames()383 ScriptValue ScriptDebugServer::currentCallFrames()
384 {
385 return currentCallFramesInner(AllScopes);
386 }
387
currentCallFramesForAsyncStack()388 ScriptValue ScriptDebugServer::currentCallFramesForAsyncStack()
389 {
390 return currentCallFramesInner(FastAsyncScopes);
391 }
392
callFrameNoScopes(int index)393 PassRefPtrWillBeRawPtr<JavaScriptCallFrame> ScriptDebugServer::callFrameNoScopes(int index)
394 {
395 v8::Handle<v8::Value> currentCallFrameV8;
396 if (m_executionState.IsEmpty()) {
397 v8::Handle<v8::Function> currentCallFrameFunction = v8::Local<v8::Function>::Cast(m_debuggerScript.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "currentCallFrameByIndex")));
398 currentCallFrameV8 = v8::Debug::Call(currentCallFrameFunction, v8::Integer::New(m_isolate, index));
399 } else {
400 v8::Handle<v8::Value> argv[] = { m_executionState, v8::Integer::New(m_isolate, index) };
401 currentCallFrameV8 = callDebuggerMethod("currentCallFrameByIndex", WTF_ARRAY_LENGTH(argv), argv);
402 }
403 ASSERT(!currentCallFrameV8.IsEmpty());
404 if (!currentCallFrameV8->IsObject())
405 return nullptr;
406 return JavaScriptCallFrame::create(v8::Debug::GetDebugContext(), v8::Handle<v8::Object>::Cast(currentCallFrameV8));
407 }
408
interruptAndRun(PassOwnPtr<Task> task,v8::Isolate * isolate)409 void ScriptDebugServer::interruptAndRun(PassOwnPtr<Task> task, v8::Isolate* isolate)
410 {
411 v8::Debug::DebugBreakForCommand(isolate, new ClientDataImpl(task));
412 }
413
runPendingTasks()414 void ScriptDebugServer::runPendingTasks()
415 {
416 v8::Debug::ProcessDebugMessages();
417 }
418
toScriptDebugServer(v8::Handle<v8::Value> data)419 static ScriptDebugServer* toScriptDebugServer(v8::Handle<v8::Value> data)
420 {
421 void* p = v8::Handle<v8::External>::Cast(data)->Value();
422 return static_cast<ScriptDebugServer*>(p);
423 }
424
breakProgramCallback(const v8::FunctionCallbackInfo<v8::Value> & info)425 void ScriptDebugServer::breakProgramCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
426 {
427 ASSERT(2 == info.Length());
428 ScriptDebugServer* thisPtr = toScriptDebugServer(info.Data());
429 ScriptState* pausedScriptState = ScriptState::current(thisPtr->m_isolate);
430 v8::Handle<v8::Value> exception;
431 v8::Handle<v8::Array> hitBreakpoints;
432 thisPtr->handleProgramBreak(pausedScriptState, v8::Handle<v8::Object>::Cast(info[0]), exception, hitBreakpoints);
433 }
434
handleProgramBreak(ScriptState * pausedScriptState,v8::Handle<v8::Object> executionState,v8::Handle<v8::Value> exception,v8::Handle<v8::Array> hitBreakpointNumbers)435 void ScriptDebugServer::handleProgramBreak(ScriptState* pausedScriptState, v8::Handle<v8::Object> executionState, v8::Handle<v8::Value> exception, v8::Handle<v8::Array> hitBreakpointNumbers)
436 {
437 // Don't allow nested breaks.
438 if (m_runningNestedMessageLoop)
439 return;
440
441 ScriptDebugListener* listener = getDebugListenerForContext(pausedScriptState->context());
442 if (!listener)
443 return;
444
445 Vector<String> breakpointIds;
446 if (!hitBreakpointNumbers.IsEmpty()) {
447 breakpointIds.resize(hitBreakpointNumbers->Length());
448 for (size_t i = 0; i < hitBreakpointNumbers->Length(); i++) {
449 v8::Handle<v8::Value> hitBreakpointNumber = hitBreakpointNumbers->Get(i);
450 ASSERT(!hitBreakpointNumber.IsEmpty() && hitBreakpointNumber->IsInt32());
451 breakpointIds[i] = String::number(hitBreakpointNumber->Int32Value());
452 }
453 }
454
455 m_pausedScriptState = pausedScriptState;
456 m_executionState = executionState;
457 ScriptDebugListener::SkipPauseRequest result = listener->didPause(pausedScriptState, currentCallFrames(), ScriptValue(pausedScriptState, exception), breakpointIds);
458 if (result == ScriptDebugListener::NoSkip) {
459 m_runningNestedMessageLoop = true;
460 runMessageLoopOnPause(pausedScriptState->context());
461 m_runningNestedMessageLoop = false;
462 }
463 m_pausedScriptState.clear();
464 m_executionState.Clear();
465
466 if (result == ScriptDebugListener::StepInto) {
467 v8::Handle<v8::Value> argv[] = { executionState };
468 callDebuggerMethod(stepIntoV8MethodName, 1, argv);
469 } else if (result == ScriptDebugListener::StepOut) {
470 v8::Handle<v8::Value> argv[] = { executionState };
471 callDebuggerMethod(stepOutV8MethodName, 1, argv);
472 }
473 }
474
v8DebugEventCallback(const v8::Debug::EventDetails & eventDetails)475 void ScriptDebugServer::v8DebugEventCallback(const v8::Debug::EventDetails& eventDetails)
476 {
477 ScriptDebugServer* thisPtr = toScriptDebugServer(eventDetails.GetCallbackData());
478 thisPtr->handleV8DebugEvent(eventDetails);
479 }
480
callInternalGetterFunction(v8::Handle<v8::Object> object,const char * functionName,v8::Isolate * isolate)481 static v8::Handle<v8::Value> callInternalGetterFunction(v8::Handle<v8::Object> object, const char* functionName, v8::Isolate* isolate)
482 {
483 v8::Handle<v8::Value> getterValue = object->Get(v8AtomicString(isolate, functionName));
484 ASSERT(!getterValue.IsEmpty() && getterValue->IsFunction());
485 return V8ScriptRunner::callInternalFunction(v8::Handle<v8::Function>::Cast(getterValue), object, 0, 0, isolate);
486 }
487
handleV8DebugEvent(const v8::Debug::EventDetails & eventDetails)488 void ScriptDebugServer::handleV8DebugEvent(const v8::Debug::EventDetails& eventDetails)
489 {
490 v8::DebugEvent event = eventDetails.GetEvent();
491
492 if (event == v8::BreakForCommand) {
493 ClientDataImpl* data = static_cast<ClientDataImpl*>(eventDetails.GetClientData());
494 data->task()->run();
495 return;
496 }
497
498 if (event != v8::AsyncTaskEvent && event != v8::Break && event != v8::Exception && event != v8::AfterCompile && event != v8::BeforeCompile && event != v8::CompileError && event != v8::PromiseEvent)
499 return;
500
501 v8::Handle<v8::Context> eventContext = eventDetails.GetEventContext();
502 ASSERT(!eventContext.IsEmpty());
503
504 ScriptDebugListener* listener = getDebugListenerForContext(eventContext);
505 if (listener) {
506 v8::HandleScope scope(m_isolate);
507 if (event == v8::BeforeCompile) {
508 preprocessBeforeCompile(eventDetails);
509 } else if (event == v8::AfterCompile || event == v8::CompileError) {
510 v8::Context::Scope contextScope(v8::Debug::GetDebugContext());
511 v8::Handle<v8::Value> argv[] = { eventDetails.GetEventData() };
512 v8::Handle<v8::Value> value = callDebuggerMethod("getAfterCompileScript", 1, argv);
513 ASSERT(value->IsObject());
514 v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(value);
515 dispatchDidParseSource(listener, object, event != v8::AfterCompile ? CompileError : CompileSuccess);
516 } else if (event == v8::Exception) {
517 v8::Handle<v8::Object> eventData = eventDetails.GetEventData();
518 v8::Handle<v8::Value> exception = callInternalGetterFunction(eventData, "exception", m_isolate);
519 handleProgramBreak(ScriptState::from(eventContext), eventDetails.GetExecutionState(), exception, v8::Handle<v8::Array>());
520 } else if (event == v8::Break) {
521 v8::Handle<v8::Value> argv[] = { eventDetails.GetEventData() };
522 v8::Handle<v8::Value> hitBreakpoints = callDebuggerMethod("getBreakpointNumbers", 1, argv);
523 ASSERT(hitBreakpoints->IsArray());
524 handleProgramBreak(ScriptState::from(eventContext), eventDetails.GetExecutionState(), v8::Handle<v8::Value>(), hitBreakpoints.As<v8::Array>());
525 } else if (event == v8::AsyncTaskEvent) {
526 if (listener->v8AsyncTaskEventsEnabled())
527 handleV8AsyncTaskEvent(listener, ScriptState::from(eventContext), eventDetails.GetExecutionState(), eventDetails.GetEventData());
528 } else if (event == v8::PromiseEvent) {
529 if (listener->v8PromiseEventsEnabled())
530 handleV8PromiseEvent(listener, ScriptState::from(eventContext), eventDetails.GetExecutionState(), eventDetails.GetEventData());
531 }
532 }
533 }
534
handleV8AsyncTaskEvent(ScriptDebugListener * listener,ScriptState * pausedScriptState,v8::Handle<v8::Object> executionState,v8::Handle<v8::Object> eventData)535 void ScriptDebugServer::handleV8AsyncTaskEvent(ScriptDebugListener* listener, ScriptState* pausedScriptState, v8::Handle<v8::Object> executionState, v8::Handle<v8::Object> eventData)
536 {
537 String type = toCoreStringWithUndefinedOrNullCheck(callInternalGetterFunction(eventData, "type", m_isolate));
538 String name = toCoreStringWithUndefinedOrNullCheck(callInternalGetterFunction(eventData, "name", m_isolate));
539 int id = callInternalGetterFunction(eventData, "id", m_isolate)->ToInteger()->Value();
540
541 m_pausedScriptState = pausedScriptState;
542 m_executionState = executionState;
543 listener->didReceiveV8AsyncTaskEvent(pausedScriptState->executionContext(), type, name, id);
544 m_pausedScriptState.clear();
545 m_executionState.Clear();
546 }
547
handleV8PromiseEvent(ScriptDebugListener * listener,ScriptState * pausedScriptState,v8::Handle<v8::Object> executionState,v8::Handle<v8::Object> eventData)548 void ScriptDebugServer::handleV8PromiseEvent(ScriptDebugListener* listener, ScriptState* pausedScriptState, v8::Handle<v8::Object> executionState, v8::Handle<v8::Object> eventData)
549 {
550 v8::Handle<v8::Value> argv[] = { eventData };
551 v8::Handle<v8::Value> value = callDebuggerMethod("getPromiseDetails", 1, argv);
552 ASSERT(value->IsObject());
553 v8::Handle<v8::Object> promiseDetails = v8::Handle<v8::Object>::Cast(value);
554 v8::Handle<v8::Object> promise = promiseDetails->Get(v8AtomicString(m_isolate, "promise"))->ToObject();
555 int status = promiseDetails->Get(v8AtomicString(m_isolate, "status"))->ToInteger()->Value();
556 v8::Handle<v8::Value> parentPromise = promiseDetails->Get(v8AtomicString(m_isolate, "parentPromise"));
557
558 m_pausedScriptState = pausedScriptState;
559 m_executionState = executionState;
560 listener->didReceiveV8PromiseEvent(pausedScriptState, promise, parentPromise, status);
561 m_pausedScriptState.clear();
562 m_executionState.Clear();
563 }
564
dispatchDidParseSource(ScriptDebugListener * listener,v8::Handle<v8::Object> object,CompileResult compileResult)565 void ScriptDebugServer::dispatchDidParseSource(ScriptDebugListener* listener, v8::Handle<v8::Object> object, CompileResult compileResult)
566 {
567 v8::Handle<v8::Value> id = object->Get(v8AtomicString(m_isolate, "id"));
568 ASSERT(!id.IsEmpty() && id->IsInt32());
569 String sourceID = String::number(id->Int32Value());
570
571 ScriptDebugListener::Script script;
572 script.url = toCoreStringWithUndefinedOrNullCheck(object->Get(v8AtomicString(m_isolate, "name")));
573 script.sourceURL = toCoreStringWithUndefinedOrNullCheck(object->Get(v8AtomicString(m_isolate, "sourceURL")));
574 script.sourceMappingURL = toCoreStringWithUndefinedOrNullCheck(object->Get(v8AtomicString(m_isolate, "sourceMappingURL")));
575 script.source = toCoreStringWithUndefinedOrNullCheck(object->Get(v8AtomicString(m_isolate, "source")));
576 script.startLine = object->Get(v8AtomicString(m_isolate, "startLine"))->ToInteger()->Value();
577 script.startColumn = object->Get(v8AtomicString(m_isolate, "startColumn"))->ToInteger()->Value();
578 script.endLine = object->Get(v8AtomicString(m_isolate, "endLine"))->ToInteger()->Value();
579 script.endColumn = object->Get(v8AtomicString(m_isolate, "endColumn"))->ToInteger()->Value();
580 script.isContentScript = object->Get(v8AtomicString(m_isolate, "isContentScript"))->ToBoolean()->Value();
581
582 listener->didParseSource(sourceID, script, compileResult);
583 }
584
ensureDebuggerScriptCompiled()585 void ScriptDebugServer::ensureDebuggerScriptCompiled()
586 {
587 if (!m_debuggerScript.isEmpty())
588 return;
589
590 v8::HandleScope scope(m_isolate);
591 v8::Context::Scope contextScope(v8::Debug::GetDebugContext());
592 const blink::WebData& debuggerScriptSourceResource = blink::Platform::current()->loadResource("DebuggerScriptSource.js");
593 v8::Handle<v8::String> source = v8String(m_isolate, String(debuggerScriptSourceResource.data(), debuggerScriptSourceResource.size()));
594 v8::Local<v8::Value> value = V8ScriptRunner::compileAndRunInternalScript(source, m_isolate);
595 ASSERT(!value.IsEmpty());
596 ASSERT(value->IsObject());
597 m_debuggerScript.set(m_isolate, v8::Handle<v8::Object>::Cast(value));
598 }
599
discardDebuggerScript()600 void ScriptDebugServer::discardDebuggerScript()
601 {
602 ASSERT(!m_debuggerScript.isEmpty());
603 m_debuggerScript.clear();
604 }
605
functionScopes(v8::Handle<v8::Function> function)606 v8::Local<v8::Value> ScriptDebugServer::functionScopes(v8::Handle<v8::Function> function)
607 {
608 ensureDebuggerScriptCompiled();
609
610 v8::Handle<v8::Value> argv[] = { function };
611 return callDebuggerMethod("getFunctionScopes", 1, argv);
612 }
613
collectionEntries(v8::Handle<v8::Object> & object)614 v8::Local<v8::Value> ScriptDebugServer::collectionEntries(v8::Handle<v8::Object>& object)
615 {
616 ensureDebuggerScriptCompiled();
617
618 v8::Handle<v8::Value> argv[] = { object };
619 return callDebuggerMethod("getCollectionEntries", 1, argv);
620 }
621
getInternalProperties(v8::Handle<v8::Object> & object)622 v8::Local<v8::Value> ScriptDebugServer::getInternalProperties(v8::Handle<v8::Object>& object)
623 {
624 if (m_debuggerScript.isEmpty())
625 return v8::Local<v8::Value>::New(m_isolate, v8::Undefined(m_isolate));
626
627 v8::Handle<v8::Value> argv[] = { object };
628 return callDebuggerMethod("getInternalProperties", 1, argv);
629 }
630
setFunctionVariableValue(v8::Handle<v8::Value> functionValue,int scopeNumber,const String & variableName,v8::Handle<v8::Value> newValue)631 v8::Handle<v8::Value> ScriptDebugServer::setFunctionVariableValue(v8::Handle<v8::Value> functionValue, int scopeNumber, const String& variableName, v8::Handle<v8::Value> newValue)
632 {
633 v8::Local<v8::Context> debuggerContext = v8::Debug::GetDebugContext();
634 if (m_debuggerScript.isEmpty())
635 return m_isolate->ThrowException(v8::String::NewFromUtf8(m_isolate, "Debugging is not enabled."));
636
637 v8::Handle<v8::Value> argv[] = {
638 functionValue,
639 v8::Handle<v8::Value>(v8::Integer::New(debuggerContext->GetIsolate(), scopeNumber)),
640 v8String(debuggerContext->GetIsolate(), variableName),
641 newValue
642 };
643 return callDebuggerMethod("setFunctionVariableValue", 4, argv);
644 }
645
646
isPaused()647 bool ScriptDebugServer::isPaused()
648 {
649 return m_pausedScriptState;
650 }
651
compileScript(ScriptState * scriptState,const String & expression,const String & sourceURL,String * scriptId,String * exceptionDetailsText,int * lineNumber,int * columnNumber,RefPtrWillBeRawPtr<ScriptCallStack> * stackTrace)652 void ScriptDebugServer::compileScript(ScriptState* scriptState, const String& expression, const String& sourceURL, String* scriptId, String* exceptionDetailsText, int* lineNumber, int* columnNumber, RefPtrWillBeRawPtr<ScriptCallStack>* stackTrace)
653 {
654 if (scriptState->contextIsValid())
655 return;
656 ScriptState::Scope scope(scriptState);
657
658 v8::Handle<v8::String> source = v8String(m_isolate, expression);
659 v8::TryCatch tryCatch;
660 v8::Local<v8::Script> script = V8ScriptRunner::compileScript(source, sourceURL, TextPosition(), 0, 0, m_isolate);
661 if (tryCatch.HasCaught()) {
662 v8::Local<v8::Message> message = tryCatch.Message();
663 if (!message.IsEmpty()) {
664 *exceptionDetailsText = toCoreStringWithUndefinedOrNullCheck(message->Get());
665 *lineNumber = message->GetLineNumber();
666 *columnNumber = message->GetStartColumn();
667 *stackTrace = createScriptCallStack(message->GetStackTrace(), message->GetStackTrace()->GetFrameCount(), m_isolate);
668 }
669 return;
670 }
671 if (script.IsEmpty())
672 return;
673
674 *scriptId = String::number(script->GetUnboundScript()->GetId());
675 m_compiledScripts.set(*scriptId, adoptPtr(new ScopedPersistent<v8::Script>(m_isolate, script)));
676 }
677
clearCompiledScripts()678 void ScriptDebugServer::clearCompiledScripts()
679 {
680 m_compiledScripts.clear();
681 }
682
runScript(ScriptState * scriptState,const String & scriptId,ScriptValue * result,bool * wasThrown,String * exceptionDetailsText,int * lineNumber,int * columnNumber,RefPtrWillBeRawPtr<ScriptCallStack> * stackTrace)683 void ScriptDebugServer::runScript(ScriptState* scriptState, const String& scriptId, ScriptValue* result, bool* wasThrown, String* exceptionDetailsText, int* lineNumber, int* columnNumber, RefPtrWillBeRawPtr<ScriptCallStack>* stackTrace)
684 {
685 if (!m_compiledScripts.contains(scriptId))
686 return;
687 v8::HandleScope handleScope(m_isolate);
688 ScopedPersistent<v8::Script>* scriptHandle = m_compiledScripts.get(scriptId);
689 v8::Local<v8::Script> script = scriptHandle->newLocal(m_isolate);
690 m_compiledScripts.remove(scriptId);
691 if (script.IsEmpty())
692 return;
693
694 if (scriptState->contextIsValid())
695 return;
696 ScriptState::Scope scope(scriptState);
697 v8::TryCatch tryCatch;
698 v8::Local<v8::Value> value = V8ScriptRunner::runCompiledScript(script, scriptState->executionContext(), m_isolate);
699 *wasThrown = false;
700 if (tryCatch.HasCaught()) {
701 *wasThrown = true;
702 *result = ScriptValue(scriptState, tryCatch.Exception());
703 v8::Local<v8::Message> message = tryCatch.Message();
704 if (!message.IsEmpty()) {
705 *exceptionDetailsText = toCoreStringWithUndefinedOrNullCheck(message->Get());
706 *lineNumber = message->GetLineNumber();
707 *columnNumber = message->GetStartColumn();
708 *stackTrace = createScriptCallStack(message->GetStackTrace(), message->GetStackTrace()->GetFrameCount(), m_isolate);
709 }
710 } else {
711 *result = ScriptValue(scriptState, value);
712 }
713 }
714
preprocess(LocalFrame *,const ScriptSourceCode &)715 PassOwnPtr<ScriptSourceCode> ScriptDebugServer::preprocess(LocalFrame*, const ScriptSourceCode&)
716 {
717 return PassOwnPtr<ScriptSourceCode>();
718 }
719
preprocessEventListener(LocalFrame *,const String & source,const String & url,const String & functionName)720 String ScriptDebugServer::preprocessEventListener(LocalFrame*, const String& source, const String& url, const String& functionName)
721 {
722 return source;
723 }
724
725 } // namespace blink
726