/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.uima.taeconfigurator.editors.xml;

import org.eclipse.jface.text.rules.*;

public class TagRule extends MultiLineRule {

  public TagRule(IToken token) {
    super("<", ">", token);
  }

  protected boolean sequenceDetected(ICharacterScanner scanner, char[] sequence, boolean eofAllowed) {
    int c = scanner.read();
    if (sequence[0] == '<') {
      if (c == '?') {
        // processing instruction - abort
        scanner.unread();
        return false;
      }
      if (c == '!') {
        scanner.unread();
        // comment - abort
        return false;
      }
    } else if (sequence[0] == '>') {
      scanner.unread();
    }
    return super.sequenceDetected(scanner, sequence, eofAllowed);
  }
}
