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/*
 * Copyright 2010 the original author or authors.
 *
 * 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 org.gradle.api.plugins.antlr;

import groovy.lang.Closure;
import org.gradle.api.Action;
import org.gradle.api.file.SourceDirectorySet;

/**
 * Contract for a Gradle "convention object" that acts as a handler for what I call a virtual directory mapping,
 * injecting a virtual directory named 'antlr' into the project's various {@link org.gradle.api.tasks.SourceSet source
 * sets}.
 */
public interface AntlrSourceVirtualDirectory {
    String NAME = "antlr";

    /**
     * All Antlr source for this source set.
     *
     * @return The Antlr source.  Never returns null.
     */
    SourceDirectorySet getAntlr();

    /**
     * Configures the Antlr source for this set. The given closure is used to configure the {@link org.gradle.api.file.SourceDirectorySet} (see
     * {@link #getAntlr}) which contains the Antlr source.
     *
     * @param configureClosure The closure to use to configure the Antlr source.
     * @return this
     */
    @SuppressWarnings("rawtypes")
    AntlrSourceVirtualDirectory antlr(Closure configureClosure);

    /**
     * Configures the Antlr source for this set. The given action is used to configure the {@link org.gradle.api.file.SourceDirectorySet} (see
     * {@link #getAntlr}) which contains the Antlr source.
     *
     * @param configureAction The action to use to configure the Antlr source.
     * @return this
     * @since 3.5
     */
    AntlrSourceVirtualDirectory antlr(Action configureAction);
}