| /* |
| * Copyright 2013-present Facebook, Inc. |
| * |
| * 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 com.facebook.buck.rules; |
| |
| import com.facebook.buck.io.ProjectFilesystem; |
| |
| import java.util.Objects; |
| |
| /** |
| * Abstract base class for implementations of {@link SourcePath}. |
| */ |
| abstract class AbstractSourcePath implements SourcePath { |
| |
| private final ProjectFilesystem projectFilesystem; |
| |
| protected AbstractSourcePath(ProjectFilesystem projectFilesystem) { |
| this.projectFilesystem = projectFilesystem; |
| } |
| |
| protected final ProjectFilesystem getProjectFilesystem() { |
| return projectFilesystem; |
| } |
| |
| /** |
| * @return An opaque representation of the source path in a stable manner. |
| */ |
| protected abstract Object asReference(); |
| |
| @Override |
| public int compareTo(SourcePath o) { |
| if (o == this) { |
| return 0; |
| } |
| |
| return toString().compareTo(o.toString()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return asReference().hashCode(); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (other == null || !(other instanceof AbstractSourcePath)) { |
| return false; |
| } |
| |
| AbstractSourcePath that = (AbstractSourcePath) other; |
| |
| return Objects.equals(this.projectFilesystem, that.projectFilesystem) && |
| Objects.equals(this.asReference(), that.asReference()); |
| } |
| |
| @Override |
| public String toString() { |
| return String.valueOf(asReference()); |
| } |
| } |