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 Tool 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/codegen/model/decl/ContextGetterDecl.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.codegen.model.decl;

import org.antlr.v4.codegen.OutputModelFactory;
import org.antlr.v4.runtime.misc.MurmurHash;

public abstract class ContextGetterDecl extends Decl {
	public ContextGetterDecl(OutputModelFactory factory, String name) {
		super(factory, name);
	}

	/** Not used for output; just used to distinguish between decl types
	 *  to avoid dups.
	 */
	public String getArgType() { return ""; }; // assume no args

	@Override
	public int hashCode() {
		int hash = MurmurHash.initialize();
		hash = MurmurHash.update(hash, name);
		hash = MurmurHash.update(hash, getArgType());
		hash = MurmurHash.finish(hash, 2);
		return hash;
	}

	/** Make sure that a getter does not equal a label. X() and X are ok.
	 *  OTOH, treat X() with two diff return values as the same.  Treat
	 *  two X() with diff args as different.
	 */
	@Override
	public boolean equals(Object obj) {
		if ( this==obj ) return true;
		// A() and label A are different
		if ( !(obj instanceof ContextGetterDecl) ) return false;
		return name.equals(((Decl) obj).name) &&
				getArgType().equals(((ContextGetterDecl) obj).getArgType());
	}
}

⏎ org/antlr/v4/codegen/model/decl/ContextGetterDecl.java

Or download all of them as a single archive file:

File name: antlr-tool-4.10.1-sources.jar
File size: 347718 bytes
Release date: 2022-04-15
Download 

⇒ Donwload antlr4-4.10.1.zip

⇐ ANTLR Runtime Source Code

⇑ Download and Review ANTLR Parser Generator

⇑⇑ FAQ for ANTLR Parser Generator