/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * Copyright (C) 2004-2011

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

package com.sun.xml.internal.rngom.binary;

import org.xml.sax.SAXException;

import java.util.Collection;

import java.util.List;

import java.util.ArrayList;

public abstract class BinaryPattern extends Pattern {

  protected final Pattern p1;

  protected final Pattern p2;

  BinaryPattern(boolean nullable, int hc, Pattern p1, Pattern p2) {

    super(nullable, Math.max(p1.getContentType(), p2.getContentType()), hc);

    this.p1 = p1;

    this.p2 = p2;

  }

  void checkRecursion(int depth) throws SAXException {

    p1.checkRecursion(depth);

    p2.checkRecursion(depth);

  }

  void checkRestrictions(int context, DuplicateAttributeDetector dad, Alphabet alpha)

    throws RestrictionViolationException {

    p1.checkRestrictions(context, dad, alpha);

    p2.checkRestrictions(context, dad, alpha);

  }

  boolean samePattern(Pattern other) {

    if (getClass() != other.getClass())

      return false;

    BinaryPattern b = (BinaryPattern)other;

    return p1 == b.p1 && p2 == b.p2;

  }

  public final Pattern getOperand1() {

    return p1;

  }

  public final Pattern getOperand2() {

    return p2;

  }

  /**

   * Adds all the children of this pattern to the given collection.

   *

   * <p>

   * For example, if this pattern is (A|B|C), it adds A, B, and C

   * to the collection, even though internally it's represented

   * as (A|(B|C)).

   */

  public final void fillChildren( Collection col ) {

    fillChildren(getClass(),p1,col);

    fillChildren(getClass(),p2,col);

  }

  /**

   * Same as {@link #fillChildren(Collection)} but returns an array.

   */

  public final Pattern[] getChildren() {

      List lst = new ArrayList();

      fillChildren(lst);

      return (Pattern[]) lst.toArray(new Pattern[lst.size()]);

  }

  private void fillChildren( Class c, Pattern p, Collection col ) {

    if(p.getClass()==c) {

      BinaryPattern bp = (BinaryPattern)p;

      bp.fillChildren(c,bp.p1,col);

      bp.fillChildren(c,bp.p2,col);

    } else {

      col.add(p);

    }

  }

}