| // Copyright 2017 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.analysis; |
| |
| import static com.google.devtools.build.lib.packages.Attribute.attr; |
| import static com.google.devtools.build.lib.packages.BuildType.LABEL_LIST; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.packages.RuleClass; |
| |
| /** Helper class to manage rules' use of platforms. */ |
| public class PlatformSemantics { |
| |
| public static final String RESOLVED_TOOLCHAINS_ATTR = "$resolved_toolchains_internal"; |
| public static final String EXEC_COMPATIBLE_WITH_ATTR = "exec_compatible_with"; |
| |
| public static RuleClass.Builder platformAttributes(RuleClass.Builder builder) { |
| return builder.add( |
| attr(RESOLVED_TOOLCHAINS_ATTR, LABEL_LIST) |
| .nonconfigurable("Used in toolchain resolution") |
| .value(ImmutableList.of())); |
| } |
| } |