nl.knaw.AntlrUtils.java Source code

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Here is the source code for nl.knaw.AntlrUtils.java

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package nl.knaw;

/*-
 * #%L
 * alexandria-markup
 * =======
 * Copyright (C) 2016 - 2018 HuC DI (KNAW)
 * =======
 * Licensed 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.
 * #L%
 */
import de.vandermeer.asciitable.AsciiTable;
import de.vandermeer.asciitable.CWC_LongestLine;
import de.vandermeer.asciithemes.a7.A7_Grids;
import de.vandermeer.skb.interfaces.transformers.textformat.TextAlignment;
import org.antlr.v4.runtime.Lexer;
import org.antlr.v4.runtime.Token;

public class AntlrUtils {

    public static String makeTokenTable(Lexer lexer) {
        AsciiTable table = new AsciiTable().setTextAlignment(TextAlignment.LEFT);
        CWC_LongestLine cwc = new CWC_LongestLine();
        table.getRenderer().setCWC(cwc);
        table.addRule();
        table.addRow("Pos", "Text", "Rule", "Next mode", "Token");
        table.addRule();

        Token token;
        do {
            token = lexer.nextToken();
            //      LOG.info(token.toString());
            if (token.getType() != Token.EOF) {
                String pos = token.getLine() + ":" + token.getCharPositionInLine();
                String text = "'" + token.getText() + "'";
                String rule = lexer.getRuleNames()[token.getType() - 1];
                String mode = lexer.getModeNames()[lexer._mode];
                table.addRow(pos, text, rule, mode, token);
            }
        } while (token.getType() != Token.EOF);
        table.addRule();
        table.getContext().setGrid(A7_Grids.minusBarPlusEquals());
        return table.render();
    }

}