/**
 * $Id: $
 * $Date: $
 *
 */

package org.xmlsh.sh.core;

import java.io.IOException;
import java.io.PrintWriter;
import org.xmlsh.core.CoreException;
import org.xmlsh.core.EvalEnv;
import org.xmlsh.sh.grammar.Token;
import org.xmlsh.sh.shell.ParseResult;
import org.xmlsh.sh.shell.Shell;

/*
 * A list of word expressions that are treatable as a single word for expression
 * purposes
 * but expand to a list/sequence on expansion
 */
@SuppressWarnings("serial")
public class ListWord extends Word {

  protected ListWord(Token t) {
    super(t);
  }

  protected WordList mList = new WordList();

  @Override
  public void print(PrintWriter out) {
    mList.print(out);
    ;
  }

  public boolean add(Word word) {
    if(word instanceof ListWord)
      return mList.addAll(((ListWord) word).mList);
    else
      return mList.add(word);
  }

  @Override
  public boolean isEmpty() {
    return mList.isEmpty();
  }

  @Override
  public String getSimpleName() {

    // Temporary Hack
    StringBuilder sb = new StringBuilder();
    for(Word w : mList) {

      if(sb.length() > 0)
        sb.append(" ");
      sb.append(w.getSimpleName());
    }
    return sb.toString();
  }

  @Override
  protected ParseResult expandToResult(Shell shell, EvalEnv env,
      ParseResult result) throws IOException,
      CoreException {

    // Combine and wild card expand
    for(Word w : mList) {
      result.delim();
      result = w.expandToResult(shell, env, result);
    }

    return result;

  }

}

//
//
// Copyright (C) 2008-2014 David A. Lee.
//
// The contents of this file are subject to the "Simplified BSD License" (the
// "License");
// you may not use this file except in compliance with the License. You may
// obtain a copy of the
// License at http://www.opensource.org/licenses/bsd-license.php
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is David A. Lee
//
// Portions created by (your name) are Copyright (C) (your legal entity). All
// Rights Reserved.
//
// Contributor(s): none.
//