// (C) Uri Wilensky. https://github.com/NetLogo/NetLogo
package org.nlogo.prim.etc;
import org.nlogo.agent.Link;
import org.nlogo.agent.Turtle;
import org.nlogo.api.I18N;
import org.nlogo.api.LogoException;
import org.nlogo.api.Syntax;
import org.nlogo.nvm.EngineException;
import org.nlogo.nvm.Reporter;
public final strictfp class _otherend
extends Reporter {
@Override
public Syntax syntax() {
return Syntax.reporterSyntax
(Syntax.AgentType(), "-T-L");
}
@Override
public Object report(final org.nlogo.nvm.Context context) throws LogoException {
Link link;
Turtle node;
if (context.agent instanceof Link) {
link = (Link) context.agent;
if (!(context.myself() instanceof Turtle)) {
throw new EngineException(context, this,
I18N.errorsJ().get("org.nlogo.prim.etc._otherend.onlyTurtleCanGetLinkEnd"));
}
node = (Turtle) context.myself();
} else {
node = (Turtle) context.agent;
if (!(context.myself() instanceof Link)) {
throw new EngineException(context, this,
I18N.errorsJ().get("org.nlogo.prim.etc._otherend.onlyLinkCanGetTurtleEnd"));
}
link = (Link) context.myself();
}
Turtle dest = link.end2();
Turtle src = link.end1();
if (dest == node) {
return src;
}
if (src == node) {
return dest;
}
throw new EngineException(context, this,
I18N.errorsJ().getN("org.nlogo.prim.etc._otherend.incorrectLink", node.toString(), link.toString()));
}
}