private void printVar(OutputSink out, LocalVariable var, StackFrame frame) {
out.print(" " + var.name());
if (var.isVisible(frame)) {
Value val = frame.getValue(var);
out.println(" = " + val.toString());
} else {
out.println(" is not in scope");
}
}
public Value getLocalVariableValue(StackFrame fr, String localName)
throws AbsentInformationException, IncompatibleThreadStateException {
Value ret = null;
LocalVariable var = fr.visibleVariableByName(localName);
if (var != null) {
ret = fr.getValue(var);
}
return ret;
}
public StringReference getLocalVariableValueAsString(StackFrame fr, String localName)
throws AbsentInformationException, IncompatibleThreadStateException {
Value val = null;
StringReference ret = null;
LocalVariable var = fr.visibleVariableByName(localName);
if (var != null) {
val = fr.getValue(var);
if (val instanceof StringReference) {
ret = (StringReference) fr.getValue(var);
} else {
LOGGER.warn(
"getLocalVariableValueAsString called with non-String Object: "
+ var.getClass().getName());
}
} else {
LOGGER.warn("LocalVariable with name: " + localName + " was not found");
}
return ret;
}
public Value getLocalVariableValue(ThreadReference tr, int frameIdx, String localName)
throws AbsentInformationException, IncompatibleThreadStateException {
StackFrame fr = tr.frame(frameIdx);
Value ret = null;
LocalVariable var = fr.visibleVariableByName(localName);
if (var != null) {
ret = fr.getValue(var);
}
return ret;
}
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;
}
