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package org.elasticsearch.plan.a;
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.
*/
import org.antlr.v4.runtime.DefaultErrorStrategy;
import org.antlr.v4.runtime.InputMismatchException;
import org.antlr.v4.runtime.NoViableAltException;
import org.antlr.v4.runtime.Parser;
import org.antlr.v4.runtime.RecognitionException;
import org.antlr.v4.runtime.Token;
import java.text.ParseException;
class ParserErrorStrategy extends DefaultErrorStrategy {
@Override
public void recover(Parser recognizer, RecognitionException re) {
Token token = re.getOffendingToken();
String message;
if (token == null) {
message = "Error: no parse token found.";
} else if (re instanceof InputMismatchException) {
message = "Error[" + token.getLine() + ":" + token.getCharPositionInLine() + "]:" +
" unexpected token [" + getTokenErrorDisplay(token) + "]" +
" was expecting one of [" + re.getExpectedTokens().toString(recognizer.getVocabulary()) + "].";
} else if (re instanceof NoViableAltException) {
if (token.getType() == PlanAParser.EOF) {
message = "Error: unexpected end of script.";
} else {
message = "Error[" + token.getLine() + ":" + token.getCharPositionInLine() + "]:" +
"invalid sequence of tokens near [" + getTokenErrorDisplay(token) + "].";
}
} else {
message = "Error[" + token.getLine() + ":" + token.getCharPositionInLine() + "]:" +
" unexpected token near [" + getTokenErrorDisplay(token) + "].";
}
ParseException parseException = new ParseException(message, token == null ? -1 : token.getStartIndex());
parseException.initCause(re);
throw new RuntimeException(parseException);
}
@Override
public Token recoverInline(Parser recognizer) throws RecognitionException {
Token token = recognizer.getCurrentToken();
String message = "Error[" + token.getLine() + ":" + token.getCharPositionInLine() + "]:" +
" unexpected token [" + getTokenErrorDisplay(token) + "]" +
" was expecting one of [" + recognizer.getExpectedTokens().toString(recognizer.getVocabulary()) + "].";
ParseException parseException = new ParseException(message, token.getStartIndex());
throw new RuntimeException(parseException);
}
@Override
public void sync(Parser recognizer) {
}
}
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