/*
 * 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.pig.parser;

import java.io.IOException;

import org.antlr.runtime.ANTLRFileStream;

/**
 * Pig's implementation class of file stream, used to make ANTLR case insensitive
 *  while preserving case.
 */
public class QueryParserFileStream extends ANTLRFileStream {
    public QueryParserFileStream(String fileName) throws IOException {
        super( fileName, null );
    }

    public QueryParserFileStream(String fileName, String encoding)
    throws IOException {
        super( fileName, encoding );
    }

    @Override
    public int LA(int i) {
        return QueryParserStreamUtil.LA( i, n, p, data );
    }
    
}