@Override
public String getEventMessage(LocatableEvent event) {
final Location location = event.location();
String sourceName;
try {
sourceName = location.sourceName();
} catch (AbsentInformationException e) {
sourceName = getFileName();
}
final boolean printFullTrace = Registry.is("debugger.breakpoint.message.full.trace");
StringBuilder builder = new StringBuilder();
if (printFullTrace) {
builder.append(
DebuggerBundle.message(
"status.line.breakpoint.reached.full.trace",
DebuggerUtilsEx.getLocationMethodQName(location)));
try {
final List<StackFrame> frames = event.thread().frames();
renderTrace(frames, builder);
} catch (IncompatibleThreadStateException e) {
builder.append("Stacktrace not available: ").append(e.getMessage());
}
} else {
builder.append(
DebuggerBundle.message(
"status.line.breakpoint.reached",
DebuggerUtilsEx.getLocationMethodQName(location),
sourceName,
getLineIndex() + 1));
}
return builder.toString();
}
protected StackFrame getStackFrame() {
try {
if (this.breakpointLine == Integer.MAX_VALUE) {
return this.jdiThread.frame(1);
}
return this.jdiThread.frame(0);
} catch (IncompatibleThreadStateException e) {
e.printStackTrace();
return null;
}
}
/**
* Move through a list of stack frames, searching for references to code found in the current
* sketch. Return with a RunnerException that contains the location of the error, or if nothing is
* found, just return with a RunnerException that wraps the error message itself.
*/
protected SketchException findException(
String message, ObjectReference or, ThreadReference thread) {
try {
// use to dump the stack for debugging
// for (StackFrame frame : thread.frames()) {
// System.out.println("frame: " + frame);
// }
List<StackFrame> frames = thread.frames();
for (StackFrame frame : frames) {
try {
Location location = frame.location();
String filename = null;
filename = location.sourceName();
int lineNumber = location.lineNumber() - 1;
SketchException rex = build.placeException(message, filename, lineNumber);
if (rex != null) {
return rex;
}
} catch (AbsentInformationException e) {
// Any of the thread.blah() methods can throw an AbsentInformationEx
// if that bit of data is missing. If so, just write out the error
// message to the console.
// e.printStackTrace(); // not useful
exception = new SketchException(message);
exception.hideStackTrace();
listener.statusError(exception);
}
}
} catch (IncompatibleThreadStateException e) {
// This shouldn't happen, but if it does, print the exception in case
// it's something that needs to be debugged separately.
e.printStackTrace();
}
// before giving up, try to extract from the throwable object itself
// since sometimes exceptions are re-thrown from a different context
try {
// assume object reference is Throwable, get stack trace
Method method =
((ClassType) or.referenceType())
.concreteMethodByName("getStackTrace", "()[Ljava/lang/StackTraceElement;");
ArrayReference result =
(ArrayReference)
or.invokeMethod(
thread, method, new ArrayList<Value>(), ObjectReference.INVOKE_SINGLE_THREADED);
// iterate through stack frames and pull filename and line number for each
for (Value val : result.getValues()) {
ObjectReference ref = (ObjectReference) val;
method =
((ClassType) ref.referenceType())
.concreteMethodByName("getFileName", "()Ljava/lang/String;");
StringReference strref =
(StringReference)
ref.invokeMethod(
thread, method, new ArrayList<Value>(), ObjectReference.INVOKE_SINGLE_THREADED);
String filename = strref == null ? "Unknown Source" : strref.value();
method = ((ClassType) ref.referenceType()).concreteMethodByName("getLineNumber", "()I");
IntegerValue intval =
(IntegerValue)
ref.invokeMethod(
thread, method, new ArrayList<Value>(), ObjectReference.INVOKE_SINGLE_THREADED);
int lineNumber = intval.intValue() - 1;
SketchException rex = build.placeException(message, filename, lineNumber);
if (rex != null) {
return rex;
}
}
// for (Method m : ((ClassType) or.referenceType()).allMethods()) {
// System.out.println(m + " | " + m.signature() + " | " + m.genericSignature());
// }
// Implemented for 2.0b9, writes a stack trace when there's an internal error inside core.
method = ((ClassType) or.referenceType()).concreteMethodByName("printStackTrace", "()V");
// System.err.println("got method " + method);
or.invokeMethod(
thread, method, new ArrayList<Value>(), ObjectReference.INVOKE_SINGLE_THREADED);
} catch (Exception e) {
e.printStackTrace();
}
// Give up, nothing found inside the pile of stack frames
SketchException rex = new SketchException(message);
// exception is being created /here/, so stack trace is not useful
rex.hideStackTrace();
return rex;
}
public boolean run(String codeSnippetClassName) {
ClassType codeSnippetClass;
ObjectReference codeSnippet;
Method method;
List arguments;
ObjectReference codeSnippetRunner;
try {
// Get the code snippet class
List classes = jdiVM.classesByName(codeSnippetClassName);
while (classes.size() == 0) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
}
classes = jdiVM.classesByName(codeSnippetClassName);
if (classes.size() == 0) {
// workaround bug in Standard VM
Iterator iterator = this.jdiVM.allClasses().iterator();
while (iterator.hasNext()) {
ReferenceType type = (ReferenceType) iterator.next();
if (type.name().equals(codeSnippetClassName)) {
classes = new ArrayList(1);
classes.add(type);
break;
}
}
}
}
codeSnippetClass = (ClassType) classes.get(0);
// Create a new code snippet
Method constructor = (Method) codeSnippetClass.methodsByName("<init>").get(0);
codeSnippet =
codeSnippetClass.newInstance(
jdiThread, constructor, new ArrayList(), ClassType.INVOKE_SINGLE_THREADED);
// Install local variables and "this" into generated fields
StackFrame stackFrame = getStackFrame();
try {
Iterator variables = stackFrame.visibleVariables().iterator();
while (variables.hasNext()) {
LocalVariable jdiVariable = (LocalVariable) variables.next();
Value value = stackFrame.getValue(jdiVariable);
Field field =
codeSnippetClass.fieldByName(new String(LOCAL_VAR_PREFIX) + jdiVariable.name());
codeSnippet.setValue(field, value);
}
} catch (AbsentInformationException e) {
// No variables
}
Field delegateThis = codeSnippetClass.fieldByName(new String(DELEGATE_THIS));
ObjectReference thisObject;
if (delegateThis != null && ((thisObject = stackFrame.thisObject()) != null)) {
codeSnippet.setValue(delegateThis, thisObject);
}
// Get the code snippet runner
ClassType codeSnippetRunnerClass =
(ClassType) jdiVM.classesByName(CODE_SNIPPET_RUNNER_CLASS_NAME).get(0);
Field theRunner = codeSnippetRunnerClass.fieldByName(THE_RUNNER_FIELD);
codeSnippetRunner = (ObjectReference) codeSnippetRunnerClass.getValue(theRunner);
// Get the method 'runCodeSnippet' and its arguments
method = (Method) codeSnippetRunnerClass.methodsByName(RUN_CODE_SNIPPET_METHOD).get(0);
arguments = new ArrayList();
arguments.add(codeSnippet);
} catch (ClassNotLoadedException e) {
e.printStackTrace();
return false;
} catch (IncompatibleThreadStateException e) {
e.printStackTrace();
return false;
} catch (InvalidTypeException e) {
e.printStackTrace();
return false;
} catch (InvocationException e) {
e.printStackTrace();
return false;
}
try {
// Invoke runCodeSnippet(CodeSnippet)
codeSnippetRunner.invokeMethod(
jdiThread, method, arguments, ClassType.INVOKE_SINGLE_THREADED);
// Retrieve values of local variables and put them back in the stack frame
StackFrame stackFrame = getStackFrame();
try {
Iterator variables = stackFrame.visibleVariables().iterator();
while (variables.hasNext()) {
LocalVariable jdiVariable = (LocalVariable) variables.next();
Field field =
codeSnippetClass.fieldByName(new String(LOCAL_VAR_PREFIX) + jdiVariable.name());
Value value = codeSnippet.getValue(field);
stackFrame.setValue(jdiVariable, value);
}
} catch (AbsentInformationException e) {
// No variables
}
} catch (ClassNotLoadedException e) {
e.printStackTrace();
} catch (IncompatibleThreadStateException e) {
e.printStackTrace();
} catch (InvalidTypeException e) {
e.printStackTrace();
} catch (InvocationException e) {
e.printStackTrace();
}
return true;
}