antlr4-runtime/src/antlr4/action/LexerSkipAction.js

JavaScript runtime for ANTLR4

/* Copyright (c) 2012-2022 The ANTLR Project Contributors. All rights reserved.
 * Use is of this file is governed by the BSD 3-clause license that
 * can be found in the LICENSE.txt file in the project root.
 */
import {default as LexerActionType } from "../atn/LexerActionType.js";
import LexerAction from "./LexerAction.js";

/**
 * Implements the {@code skip} lexer action by calling {@link Lexer//skip}.
 *
 * <p>The {@code skip} command does not have any parameters, so this action is
 * implemented as a singleton instance exposed by {@link //INSTANCE}.</p>
 */
export default class LexerSkipAction extends LexerAction {
    constructor() {
        super(LexerActionType.SKIP);
    }

    execute(lexer) {
        lexer.skip();
    }

    toString() {
        return "skip";
    }
}

// Provides a singleton instance of this parameterless lexer action.
LexerSkipAction.INSTANCE = new LexerSkipAction();