Package org.nlogo.prim.etc

Source Code of org.nlogo.prim.etc._member

// (C) Uri Wilensky. https://github.com/NetLogo/NetLogo

package org.nlogo.prim.etc;

import org.nlogo.agent.Agent;
import org.nlogo.agent.AgentSet;
import org.nlogo.agent.Link;
import org.nlogo.agent.Patch;
import org.nlogo.agent.Turtle;
import org.nlogo.api.Equality;
import org.nlogo.api.LogoException;
import org.nlogo.api.LogoList;
import org.nlogo.api.Syntax;
import org.nlogo.nvm.ArgumentTypeException;
import org.nlogo.nvm.Reporter;

import java.util.Iterator;

public final strictfp class _member
    extends Reporter
    implements org.nlogo.nvm.Pure {
  @Override
  public Object report(final org.nlogo.nvm.Context context) throws LogoException {
    Object obj = args[1].report(context);
    if (obj instanceof LogoList) {
      Object value = args[0].report(context);
      LogoList list = (LogoList) obj;
      for (Iterator<Object> it = list.iterator(); it.hasNext();) {
        if (Equality.equals(value, it.next())) {
          return Boolean.TRUE;
        }
      }
      return Boolean.FALSE;
    } else if (obj instanceof String) {
      return ((String) obj).indexOf(argEvalString(context, 0)) != -1
          ? Boolean.TRUE
          : Boolean.FALSE;
    } else if (obj instanceof AgentSet) {
      Agent agent = argEvalAgent(context, 0);
      AgentSet agentset = (AgentSet) obj;
      if (agent instanceof Turtle) {
        if (agent.id == -1) {
          return Boolean.FALSE;
        }
        if (agentset.type() != Turtle.class) {
          return Boolean.FALSE;
        }
        if (agentset == world.turtles()) {
          return Boolean.TRUE;
        }
        if (world.isBreed(agentset)) {
          return agentset == ((Turtle) agent).getBreed()
              ? Boolean.TRUE
              : Boolean.FALSE;
        }
      }
      if (agent instanceof Link) {
        if (agent.id == -1) {
          return Boolean.FALSE;
        }
        if (agentset.type() != Link.class) {
          return Boolean.FALSE;
        }
        if (agentset == world.links()) {
          return Boolean.TRUE;
        }
        if (world.isBreed(agentset)) {
          return agentset == ((Link) agent).getBreed() ?
              Boolean.TRUE :
              Boolean.FALSE;
        }
      } else if (agent instanceof Patch) {
        if (agentset.type() != Patch.class) {
          return Boolean.FALSE;
        }
        if (agentset == world.patches()) {
          return Boolean.TRUE;
        }
      }
      return agentset.contains(agent)
          ? Boolean.TRUE
          : Boolean.FALSE;
    } else {
      throw new ArgumentTypeException
          (context, this, 1,
              Syntax.ListType() | Syntax.StringType() | Syntax.AgentsetType(),
              obj);
    }
  }

  @Override
  public Syntax syntax() {
    int[] right = {Syntax.WildcardType(),
        Syntax.ListType() | Syntax.StringType() | Syntax.AgentsetType()};
    int ret = Syntax.BooleanType();
    return Syntax.reporterSyntax(right, ret);
  }
}
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