| /* |
| * Copyright 2012-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.step; |
| |
| import com.google.common.base.Function; |
| import com.google.common.base.Joiner; |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| public class CompositeStep implements Step, Iterable<Step> { |
| |
| private final ImmutableList<Step> steps; |
| |
| public CompositeStep(List<? extends Step> commands) { |
| Preconditions.checkNotNull(commands); |
| Preconditions.checkArgument(!commands.isEmpty(), "Must have at least one command"); |
| this.steps = ImmutableList.copyOf(commands); |
| } |
| |
| @Override |
| public int execute(ExecutionContext context) { |
| for (Step step : steps) { |
| int exitCode = step.execute(context); |
| if (exitCode != 0) { |
| return exitCode; |
| } |
| } |
| return 0; |
| } |
| |
| @Override |
| public String getDescription(final ExecutionContext context) { |
| return Joiner.on(" && ").join(Iterables.transform(steps, |
| new Function<Step, String>() { |
| @Override |
| public String apply(Step step) { |
| return step.getDescription(context); |
| } |
| })); |
| } |
| |
| @Override |
| public String getShortName() { |
| return Joiner.on("_&&_").join(Iterables.transform(steps, |
| new Function<Step, String>() { |
| @Override |
| public String apply(Step step) { |
| return step.getShortName(); |
| } |
| })); |
| } |
| |
| @Override |
| public Iterator<Step> iterator() { |
| return steps.iterator(); |
| } |
| |
| } |