| /* |
| * 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.model.BuildTarget; |
| import com.facebook.buck.util.HumanReadableException; |
| import com.google.common.base.Preconditions; |
| |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| |
| /** |
| * A {@link SourcePath} that utilizes the output from a {@link BuildTarget} as the file it |
| * represents. |
| */ |
| public class BuildTargetSourcePath extends AbstractSourcePath { |
| private final BuildTarget buildTarget; |
| |
| public BuildTargetSourcePath(BuildTarget buildTarget) { |
| this.buildTarget = Preconditions.checkNotNull(buildTarget); |
| } |
| |
| @Override |
| public Path resolve(BuildContext context) { |
| BuildRule rule = context.getDependencyGraph().findBuildRuleByTarget(buildTarget); |
| if (rule == null) { |
| throw new HumanReadableException("Cannot resolve: %s", buildTarget); |
| } |
| |
| String path = ((Buildable)rule).getPathToOutputFile(); |
| if (path == null) { |
| throw new HumanReadableException("No known output for: %s", buildTarget); |
| } |
| |
| return Paths.get(path); |
| } |
| |
| @Override |
| public String asReference() { |
| return buildTarget.getFullyQualifiedName(); |
| } |
| |
| public BuildTarget getTarget() { |
| return buildTarget; |
| } |
| } |