DevTools: Show detailed information for exceptions during snippet execution.

Source/bindings/v8/ScriptDebugServer.cpp

Index: Source/bindings/v8/ScriptDebugServer.cpp
diff --git a/Source/bindings/v8/ScriptDebugServer.cpp b/Source/bindings/v8/ScriptDebugServer.cpp
index 48bf330a72f98416d56ca2daa2b849af86c5c5a2..ba28f7372024919fda2f06fe8e9f1385bba5e037 100644
--- a/Source/bindings/v8/ScriptDebugServer.cpp
+++ b/Source/bindings/v8/ScriptDebugServer.cpp
@@ -34,6 +34,7 @@
 #include "DebuggerScriptSource.h"
 #include "V8JavaScriptCallFrame.h"
 #include "bindings/v8/ScopedPersistent.h"
+#include "bindings/v8/ScriptCallStackFactory.h"
 #include "bindings/v8/ScriptController.h"
 #include "bindings/v8/ScriptObject.h"
 #include "bindings/v8/ScriptSourceCode.h"
@@ -600,7 +601,7 @@ bool ScriptDebugServer::isPaused()
     return !m_executionState.isEmpty();
 }
 
-void ScriptDebugServer::compileScript(ScriptState* scriptState, const String& expression, const String& sourceURL, String* scriptId, String* exceptionMessage)
+void ScriptDebugServer::compileScript(ScriptState* scriptState, const String& expression, const String& sourceURL, String* scriptId, String* exceptionDetailsText, int* lineNumber, int* columnNumber, RefPtr<ScriptCallStack>* stackTrace)
 {
     if (scriptState->contextIsEmpty())
         return;
@@ -611,8 +612,12 @@ void ScriptDebugServer::compileScript(ScriptState* scriptState, const String& ex
     v8::Local<v8::Script> script = V8ScriptRunner::compileScript(source, sourceURL, TextPosition(), 0, m_isolate);
     if (tryCatch.HasCaught()) {
         v8::Local<v8::Message> message = tryCatch.Message();
-        if (!message.IsEmpty())
-            *exceptionMessage = toCoreStringWithUndefinedOrNullCheck(message->Get());
+        if (!message.IsEmpty()) {
+            *exceptionDetailsText = toCoreStringWithUndefinedOrNullCheck(message->Get());
+            *lineNumber = message->GetLineNumber();
+            *columnNumber = message->GetStartColumn();
+            *stackTrace = createScriptCallStack(message->GetStackTrace(), ScriptCallStack::maxCallStackSizeToCapture, m_isolate);

[yurys, 2014/06/05 08:46:43]

We should pass message->GetStackTrace()->GetFrameCount(); or MAX_INT instead of
ScriptCallStack::maxCallStackSizeToCapture as we want to wrap full stack here.

+        }
         return;
     }
     if (script.IsEmpty())
@@ -627,7 +632,7 @@ void ScriptDebugServer::clearCompiledScripts()
     m_compiledScripts.clear();
 }
 
-void ScriptDebugServer::runScript(ScriptState* scriptState, const String& scriptId, ScriptValue* result, bool* wasThrown, String* exceptionMessage)
+void ScriptDebugServer::runScript(ScriptState* scriptState, const String& scriptId, ScriptValue* result, bool* wasThrown, String* exceptionDetailsText, int* lineNumber, int* columnNumber, RefPtr<ScriptCallStack>* stackTrace)
 {
     if (!m_compiledScripts.contains(scriptId))
         return;
@@ -648,8 +653,12 @@ void ScriptDebugServer::runScript(ScriptState* scriptState, const String& script
         *wasThrown = true;
         *result = ScriptValue(scriptState, tryCatch.Exception());
         v8::Local<v8::Message> message = tryCatch.Message();
-        if (!message.IsEmpty())
-            *exceptionMessage = toCoreStringWithUndefinedOrNullCheck(message->Get());
+        if (!message.IsEmpty()) {
+            *exceptionDetailsText = toCoreStringWithUndefinedOrNullCheck(message->Get());
+            *lineNumber = message->GetLineNumber();
+            *columnNumber = message->GetStartColumn();
+            *stackTrace = createScriptCallStack(message->GetStackTrace(), ScriptCallStack::maxCallStackSizeToCapture, m_isolate);

[yurys, 2014/06/05 08:46:43]

ditto

+        }
     } else {
         *result = ScriptValue(scriptState, value);
     }