/*
 * Copyright 2013 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;

import org.gradle.api.Incubating;
import org.gradle.api.internal.tasks.DefaultProjectSourceSet;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.tasks.ProjectSourceSet;
import org.gradle.internal.reflect.Instantiator;

import javax.inject.Inject;

/**
 * Base plugin for language support. Adds a {@code sources} source set container to the project.
 * Part of the new source set and packaging model.
 */
@Incubating
public class LanguageBasePlugin implements Plugin<Project> {
    private final Instantiator instantiator;

    @Inject
    public LanguageBasePlugin(Instantiator instantiator) {
        this.instantiator = instantiator;
    }

    public void apply(Project project) {
        ProjectSourceSet sourceSets = instantiator.newInstance(DefaultProjectSourceSet.class, instantiator);
        project.getExtensions().add("sources", sourceSets);
    }
}

@@ -803,54 +803,8 @@
 ct;%0A
-import org.gradle.api.tasks.ProjectSourceSet;%0A
 impo
@@ -1326,166 +1326,93 @@
     
-P
+p
 roject
-SourceSet sourceSets = instantiator.newInstance(DefaultProjectSourceSet.class, instantiator);%0A        project.getExtensions().add(%22sources%22, sourceSets
+.getExtensions().create(%22sources%22, DefaultProjectSourceSet.class, instantiator
 );%0A 

use create() instead of add()