/**
 * Copyright 2013-2014 Recruit Technologies Co., Ltd. and contributors
 * (see CONTRIBUTORS.md)
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.  A copy of the
 * License is distributed with this work in the LICENSE.md file.  You may
 * also obtain a copy of the License from
 *
 *     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.gennai.gungnir.ql.analysis;

import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CharStream;

public class ANTLRNoCaseStringStream extends ANTLRStringStream {

  public ANTLRNoCaseStringStream(String input) {
    super(input);
  }

  @Override
  // CHECKSTYLE IGNORE MethodName FOR NEXT 1 LINES
  public int LA(int i) {
    int returnChar = super.LA(i);
    if (returnChar == CharStream.EOF) {
      return returnChar;
    } else if (returnChar == 0) {
      return returnChar;
    }
    return Character.toUpperCase((char) returnChar);
  }
}