private void commandMethods(StringTokenizer t) throws NoSessionException {
   if (!t.hasMoreTokens()) {
     env.error("No class specified.");
     return;
   }
   String idClass = t.nextToken();
   ReferenceType cls = findClass(idClass);
   if (cls != null) {
     List<Method> methods = cls.allMethods();
     OutputSink out = env.getOutputSink();
     for (int i = 0; i < methods.size(); i++) {
       Method method = methods.get(i);
       out.print(method.declaringType().name() + " " + method.name() + "(");
       Iterator<String> it = method.argumentTypeNames().iterator();
       if (it.hasNext()) {
         while (true) {
           out.print(it.next());
           if (!it.hasNext()) {
             break;
           }
           out.print(", ");
         }
       }
       out.println(")");
     }
     out.show();
   } else {
     // ### Should validate class name syntax.
     env.failure("\"" + idClass + "\" is not a valid id or class name.");
   }
 }
 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");
   }
 }
 private void dump(
     OutputSink out, ObjectReference obj, ReferenceType refType, ReferenceType refTypeBase) {
   for (Field field : refType.fields()) {
     out.print("    ");
     if (!refType.equals(refTypeBase)) {
       out.print(refType.name() + ".");
     }
     out.print(field.name() + ": ");
     Object o = obj.getValue(field);
     out.println((o == null) ? "null" : o.toString()); // Bug ID 4374471
   }
   if (refType instanceof ClassType) {
     ClassType sup = ((ClassType) refType).superclass();
     if (sup != null) {
       dump(out, obj, sup, refTypeBase);
     }
   } else if (refType instanceof InterfaceType) {
     for (InterfaceType sup : ((InterfaceType) refType).superinterfaces()) {
       dump(out, obj, sup, refTypeBase);
     }
   }
 }
 private void commandList(StringTokenizer t) throws NoSessionException {
   ThreadReference current = context.getCurrentThread();
   if (current == null) {
     env.error("No thread specified.");
     return;
   }
   Location loc;
   try {
     StackFrame frame = context.getCurrentFrame(current);
     if (frame == null) {
       env.failure("Thread has not yet begun execution.");
       return;
     }
     loc = frame.location();
   } catch (VMNotInterruptedException e) {
     env.failure("Target VM must be in interrupted state.");
     return;
   }
   SourceModel source = sourceManager.sourceForLocation(loc);
   if (source == null) {
     if (loc.method().isNative()) {
       env.failure("Current method is native.");
       return;
     }
     env.failure("No source available for " + Utils.locationString(loc) + ".");
     return;
   }
   ReferenceType refType = loc.declaringType();
   int lineno = loc.lineNumber();
   if (t.hasMoreTokens()) {
     String id = t.nextToken();
     // See if token is a line number.
     try {
       lineno = Integer.valueOf(id).intValue();
     } catch (NumberFormatException nfe) {
       // It isn't -- see if it's a method name.
       List<Method> meths = refType.methodsByName(id);
       if (meths == null || meths.size() == 0) {
         env.failure(
             id + " is not a valid line number or " + "method name for class " + refType.name());
         return;
       } else if (meths.size() > 1) {
         env.failure(id + " is an ambiguous method name in" + refType.name());
         return;
       }
       loc = meths.get(0).location();
       lineno = loc.lineNumber();
     }
   }
   int startLine = (lineno > 4) ? lineno - 4 : 1;
   int endLine = startLine + 9;
   String sourceLine = source.sourceLine(lineno);
   if (sourceLine == null) {
     env.failure("" + lineno + " is an invalid line number for " + refType.name());
   } else {
     OutputSink out = env.getOutputSink();
     for (int i = startLine; i <= endLine; i++) {
       sourceLine = source.sourceLine(i);
       if (sourceLine == null) {
         break;
       }
       out.print(i);
       out.print("\t");
       if (i == lineno) {
         out.print("=> ");
       } else {
         out.print("   ");
       }
       out.println(sourceLine);
     }
     out.show();
   }
 }
 private void dumpStack(ThreadReference thread, boolean showPC) {
   // ### Check for these.
   // env.failure("Thread no longer exists.");
   // env.failure("Target VM must be in interrupted state.");
   // env.failure("Current thread isn't suspended.");
   // ### Should handle extremely long stack traces sensibly for user.
   List<StackFrame> stack = null;
   try {
     stack = thread.frames();
   } catch (IncompatibleThreadStateException e) {
     env.failure("Thread is not suspended.");
   }
   // ### Fix this!
   // ### Previously mishandled cases where thread was not current.
   // ### Now, prints all of the stack regardless of current frame.
   int frameIndex = 0;
   // int frameIndex = context.getCurrentFrameIndex();
   if (stack == null) {
     env.failure("Thread is not running (no stack).");
   } else {
     OutputSink out = env.getOutputSink();
     int nFrames = stack.size();
     for (int i = frameIndex; i < nFrames; i++) {
       StackFrame frame = stack.get(i);
       Location loc = frame.location();
       Method meth = loc.method();
       out.print("  [" + (i + 1) + "] ");
       out.print(meth.declaringType().name());
       out.print('.');
       out.print(meth.name());
       out.print(" (");
       if (meth.isNative()) {
         out.print("native method");
       } else if (loc.lineNumber() != -1) {
         try {
           out.print(loc.sourceName());
         } catch (AbsentInformationException e) {
           out.print("<unknown>");
         }
         out.print(':');
         out.print(loc.lineNumber());
       }
       out.print(')');
       if (showPC) {
         long pc = loc.codeIndex();
         if (pc != -1) {
           out.print(", pc = " + pc);
         }
       }
       out.println();
     }
     out.show();
   }
 }