gradle-master/subprojects/dependency-management/src/main/java/org/gradle/api/internal/artifacts/dsl/ModuleReplacementsData.java
/*
 * Copyright 2014 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.internal.artifacts.dsl;

import org.gradle.api.artifacts.ModuleIdentifier;

import javax.annotation.Nullable;

public interface ModuleReplacementsData {
    ModuleReplacementsData NO_OP = new ModuleReplacementsData() {
        @Nullable
        @Override
        public Replacement getReplacementFor(ModuleIdentifier sourceModule) {
            return null;
        }

        @Override
        public boolean participatesInReplacements(ModuleIdentifier moduleId) {
            return false;
        }
    };

    @Nullable Replacement getReplacementFor(ModuleIdentifier sourceModule);

    boolean participatesInReplacements(ModuleIdentifier moduleId);

    class Replacement {
        private final ModuleIdentifier target;
        private final String reason;

        Replacement(ModuleIdentifier target, String reason) {
            this.target = target;
            this.reason = reason;
        }

        public ModuleIdentifier getTarget() {
            return target;
        }

        public String getReason() {
            return reason;
        }
    }
}
