ANTLR is a powerful parser generator for multiple programming languages including Java.

ANTLR contains 2 major modules:

• Runtime - For building and executing parsers/lexers generated in Java.
• Tool (The Parser Generator) - For generating parsers/lexers Java class.

ANTLR Runtime Source Code files are provided in the distribution packge (antlr4-4.10.1.zip). You can download them at ANTLR Website.

You can also browse the source code below:

⏎ org/antlr/v4/runtime/tree/pattern/TextChunk.java

/*
 * Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
 * Use of this file is governed by the BSD 3-clause license that
 * can be found in the LICENSE.txt file in the project root.
 */

package org.antlr.v4.runtime.tree.pattern;

/**
 * Represents a span of raw text (concrete syntax) between tags in a tree
 * pattern string.
 */
class TextChunk extends Chunk {
	/**
	 * This is the backing field for {@link #getText}.
	 */

	private final String text;

	/**
	 * Constructs a new instance of {@link TextChunk} with the specified text.
	 *
	 * @param text The text of this chunk.
	 * @exception IllegalArgumentException if {@code text} is {@code null}.
	 */
	public TextChunk(String text) {
		if (text == null) {
			throw new IllegalArgumentException("text cannot be null");
		}

		this.text = text;
	}

	/**
	 * Gets the raw text of this chunk.
	 *
	 * @return The text of the chunk.
	 */

	public final String getText() {
		return text;
	}

	/**
	 * {@inheritDoc}
	 *
	 * <p>The implementation for {@link TextChunk} returns the result of
	 * {@link #getText()} in single quotes.</p>
	 */
	@Override
	public String toString() {
		return "'"+text+"'";
	}
}

⏎ org/antlr/v4/runtime/tree/pattern/TextChunk.java

Or download all of them as a single archive file:

File name: antlr-runtime-4.10.1-sources.jar
File size: 308953 bytes
Release date: 2022-04-15
Download 

⇒ ANTLR Tool Source Code

⇐ What Is ANTLR Parser Generator

⇑ Download and Review ANTLR Parser Generator

⇑⇑ FAQ for ANTLR Parser Generator