| // Copyright 2014 The Bazel Authors. All rights reserved. |
| // |
| // 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.google.devtools.build.lib.actions; |
| |
| /** The action type. */ |
| public enum MiddlemanType { |
| |
| /** A normal action. */ |
| NORMAL, |
| |
| /** |
| * A middleman that denotes a scheduling dependency. |
| * |
| * <p>If an action has dependencies through scheduling dependency middleman, those dependencies |
| * will get built before the action is run and the build will error out if they cannot be built, |
| * but the dependencies will not be considered inputs of the action. |
| * |
| * <p>This is useful in cases when an action <em>might</em> need some inputs, but that is only |
| * found out right before it gets executed. The most salient case is C++ compilation where all |
| * files that can possibly be included need to be built before the action is executed, but if |
| * include scanning is used, only a subset of them will end up as inputs. |
| */ |
| SCHEDULING_DEPENDENCY_MIDDLEMAN, |
| |
| /** |
| * A runfiles middleman, which is validated by the dependency checker, but is not expanded in |
| * blaze. Instead, the runfiles manifest is sent to remote execution client, which performs the |
| * expansion. |
| */ |
| RUNFILES_MIDDLEMAN; |
| |
| public boolean isMiddleman() { |
| return this != NORMAL; |
| } |
| } |