/**
 * $Id: ScriptCommand.java 27 2008-07-05 14:30:33Z daldei $
 * $Date: 2008-07-05 10:30:33 -0400 (Sat, 05 Jul 2008) $
 *
 */

package org.xmlsh.core;

import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.xmlsh.sh.core.ICommandExpr;
import org.xmlsh.sh.core.SourceLocation;
import org.xmlsh.sh.module.IModule;
import org.xmlsh.sh.shell.Shell;

public class FunctionCommand implements ICommand {

  String mName;
  ICommandExpr mFunction;
  SourceLocation mLocation;
  IModule mModule;
  private static Logger mLogger = LogManager.getLogger();

  @Override
  protected void finalize() {
    // Clear refs
    mFunction = null;
    mLocation = null;
    mModule = null;

  }

  public FunctionCommand(IModule iModule, String name,
      ICommandExpr func, SourceLocation loc) {
    mLogger.entry(iModule, name, func, loc);
    assert (iModule != null);

    mName = name;
    mFunction = func;
    mLocation = loc;
    mModule = iModule;
  }

  @Override
  public URL getURL() throws MalformedURLException {
    // TODO Auto-generated method stub
    return null;
  }

  @Override
  public int run(Shell shell, String cmd, List<XValue> args) throws Exception {
    mLogger.entry(shell, cmd);

    int ret = shell
        .execFunctionAsCommand(mName, mFunction, mLocation, args);
    if(ret == 0)
      ret = shell.getReturnValueAsExitStatus(ret);

    return ret;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.xmlsh.core.ICommand#getType()
   */
  @Override
  public CommandType getType() {
    return CommandType.CMD_TYPE_FUNCTION;
  }

  @Override
  public IModule getModule() {
    return mModule;
  }

  @Override
  public SourceLocation getLocation() {
    return mLocation;
  }

  @Override
  public void setLocation(SourceLocation loc) {
    mLocation = loc;
  }

  @Override
  public void print(PrintWriter w, boolean bExec) {
    w.print(mName);
  }

}