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A generic CDI-based command framework
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// Generated from net\kautler\command\u005Cusage\Usage.g4 by ANTLR 4.7.2

/*
 * Copyright 2019 Björn Kautler
 *
 * 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.
 */

package net.kautler.command.usage;

import org.antlr.v4.runtime.tree.ParseTreeVisitor;

/**
 * This interface defines a complete generic visitor for a parse tree produced
 * by {@link UsageParser}.
 *
 * @param  The return type of the visit operation. Use {@link Void} for
 * operations with no return type.
 */
public interface UsageVisitor extends ParseTreeVisitor {
	/**
	 * Visit a parse tree produced by {@link UsageParser#usage}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitUsage(UsageParser.UsageContext ctx);
	/**
	 * Visit a parse tree produced by {@link UsageParser#expression}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitExpression(UsageParser.ExpressionContext ctx);
	/**
	 * Visit a parse tree produced by {@link UsageParser#optionalSubExpression}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitOptionalSubExpression(UsageParser.OptionalSubExpressionContext ctx);
	/**
	 * Visit a parse tree produced by {@link UsageParser#alternativesSubExpression}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitAlternativesSubExpression(UsageParser.AlternativesSubExpressionContext ctx);
	/**
	 * Visit a parse tree produced by {@link UsageParser#optional}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitOptional(UsageParser.OptionalContext ctx);
	/**
	 * Visit a parse tree produced by {@link UsageParser#alternatives}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitAlternatives(UsageParser.AlternativesContext ctx);
	/**
	 * Visit a parse tree produced by {@link UsageParser#placeholder}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitPlaceholder(UsageParser.PlaceholderContext ctx);
	/**
	 * Visit a parse tree produced by {@link UsageParser#placeholderWithWhitespace}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitPlaceholderWithWhitespace(UsageParser.PlaceholderWithWhitespaceContext ctx);
	/**
	 * Visit a parse tree produced by {@link UsageParser#literal}.
	 * @param ctx the parse tree
	 * @return the visitor result
	 */
	T visitLiteral(UsageParser.LiteralContext ctx);
}