/*
* Licensed to Crate.io Inc. or its affiliates ("Crate.io") under one or
* more contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright ownership.
* Crate.io 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.
*
* However, if you have executed another commercial license agreement with
* Crate.io these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial
* agreement.
*/
package io.crate.sql.parser;
import org.antlr.v4.runtime.CharStream;
import org.antlr.v4.runtime.IntStream;
import org.antlr.v4.runtime.misc.Interval;
class CaseInsensitiveStream implements CharStream {
private final CharStream stream;
CaseInsensitiveStream(CharStream stream) {
this.stream = stream;
}
@Override
public String getText(Interval interval) {
return stream.getText(interval);
}
@Override
public void consume() {
stream.consume();
}
@Override
public int LA(int i) {
int result = stream.LA(i);
switch (result) {
case 0:
case IntStream.EOF:
return result;
default:
return Character.toUpperCase(result);
}
}
@Override
public int mark() {
return stream.mark();
}
@Override
public void release(int marker) {
stream.release(marker);
}
@Override
public int index() {
return stream.index();
}
@Override
public void seek(int index) {
stream.seek(index);
}
@Override
public int size() {
return stream.size();
}
@Override
public String getSourceName() {
return stream.getSourceName();
}
}