| /* |
| * Copyright 2015-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.macros; |
| |
| import com.facebook.buck.io.ProjectFilesystem; |
| import com.facebook.buck.java.HasClasspathEntries; |
| import com.facebook.buck.parser.BuildTargetParser; |
| import com.facebook.buck.rules.BuildRule; |
| import com.google.common.base.Functions; |
| import com.google.common.base.Joiner; |
| import com.google.common.collect.FluentIterable; |
| import com.google.common.collect.Ordering; |
| |
| import java.io.File; |
| |
| /** |
| * Used to expand the macro {@literal $(classpath //some:target)} to the transitive classpath of |
| * that target, expanding all paths to be absolute. |
| */ |
| public class ClasspathMacroExpander extends BuildTargetMacroExpander { |
| public ClasspathMacroExpander(BuildTargetParser parser) { |
| super(parser); |
| } |
| |
| @Override |
| protected String expand(ProjectFilesystem filesystem, BuildRule rule) throws MacroException { |
| if (!(rule instanceof HasClasspathEntries)) { |
| throw new MacroException( |
| String.format( |
| "%s used in classpath macro does not correspond to a rule with a java classpath", |
| rule.getBuildTarget())); |
| } |
| |
| HasClasspathEntries hasEntries = (HasClasspathEntries) rule; |
| return Joiner.on(File.pathSeparator).join( |
| FluentIterable.from(hasEntries.getTransitiveClasspathEntries().values()) |
| .transform(filesystem.getAbsolutifier()) |
| .transform(Functions.toStringFunction()) |
| .toSortedSet(Ordering.natural())); |
| } |
| } |