Location.java

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// 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
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package org.apache.doris.nereids.parser;

import org.antlr.v4.runtime.ParserRuleContext;
import org.antlr.v4.runtime.Token;

/** Location: the AST location in the SQL */
public class Location {
    public final int line;
    public final int pos;

    public Location(int line, int pos) {
        this.line = line;
        this.pos = pos;
    }

    @Override
    public String toString() {
        return "line " + line + ", pos " + pos;
    }

    /** fromToken */
    public static Location fromToken(Token token) {
        if (token == null) {
            return null;
        }
        return new Location(token.getLine(), token.getCharPositionInLine());
    }

    /** fromContext */
    public static Location fromAst(ParserRuleContext parserRuleContext) {
        if (parserRuleContext == null) {
            return null;
        }
        Token start = parserRuleContext.getStart();
        return new Location(start.getLine(), start.getCharPositionInLine());
    }
}