@Override
public Value eval(EvalContext ctx, Value[] args, Type resultType) {
ScriptEngineManager m = new ScriptEngineManager();
ScriptEngine rubyEngine = m.getEngineByName("jruby");
if (rubyEngine == null)
throw new RuntimeException("Did not find the ruby engine. Please verify your classpath");
ScriptContext context = rubyEngine.getContext();
context.setErrorWriter(new NullWriter());
context.setAttribute(
"self", RubyHelper.useValueToRubyValue(args[0]), ScriptContext.ENGINE_SCOPE);
for (int i = 0; i < parameter.size(); i++) {
context.setAttribute(
parameter.get(i).getName(),
RubyHelper.useValueToRubyValue(args[i + 1]),
ScriptContext.ENGINE_SCOPE);
}
try {
Object result = rubyEngine.eval(operationBody, context);
Value resultValue = RubyHelper.rubyValueToUseValue(result, resultType);
// Wrong result type!
if (!resultValue.type().isSubtypeOf(this.resultType)) {
Log.warn(
"Extension method `"
+ name
+ "' returned wrong type! Expected `"
+ this.resultType.toString()
+ "' got `"
+ resultValue.type().toString()
+ "'");
return UndefinedValue.instance;
} else {
return resultValue;
}
} catch (ScriptException e) {
Log.error(e.getMessage());
} catch (EvalFailedException e) {
Log.error(e.getMessage());
}
return UndefinedValue.instance;
}
/** Draws the panel. */
public void paintComponent(Graphics g) {
super.paintComponent(g);
Log.setTrace(true);
// Log.trace(this, getBounds().toString());
// Log.trace(this, getInsets().toString());
// respect borders
Insets insets = getInsets();
Rectangle r = getBounds();
r.x += insets.left;
r.y += insets.top;
r.width -= insets.left + insets.right;
r.height -= insets.top + insets.bottom;
// System.out.println("paintComponent" + count++);
g.setColor(Color.black);
DirectedGraph<LayoutNode, DirectedEdge<LayoutNode>> graph = fLayout.graph();
// draw edges
Iterator<DirectedEdge<LayoutNode>> edgeIter = graph.edgeIterator();
while (edgeIter.hasNext()) {
DirectedEdge<LayoutNode> edge = edgeIter.next();
// Log.trace(this, edge.toString());
LayoutNode source = (LayoutNode) edge.source();
LayoutNode target = (LayoutNode) edge.target();
int x1 = source.getX() * 80 + 30;
int y1 = 50 + source.fLayer * 50;
// if (source.isDummy() )
// x1 += 5;
int x2 = target.getX() * 80 + 30;
int y2 = 50 + target.fLayer * 50;
// if (target.isDummy() )
// x2 += 5;
g.drawLine(x1, y1, x2, y2);
}
// draw nodes
Iterator<LayoutNode> nodeIter = graph.iterator();
while (nodeIter.hasNext()) {
LayoutNode node = nodeIter.next();
if (node.isDummy()) continue;
int x = node.getX() * 80 + 30;
int y = 50 + node.fLayer * 50;
g.setColor(Color.white);
g.fillRect(x - 10, y - 10, 20, 20);
g.setColor(Color.black);
g.drawRect(x - 10, y - 10, 20, 20);
g.drawString(node.toString(), x - 7, y + 8);
}
}
/**
* Executes command and stores undo information.
*
* @exception CommandFailedException if the command failed.
*/
public void execute() throws CommandFailedException {
fSystemState.system().enterOperation(fOpCall, new PrintWriter(Log.out()));
}
