| // 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.rules.platform; |
| |
| import static com.google.devtools.build.lib.packages.Attribute.attr; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.analysis.BaseRuleClasses; |
| import com.google.devtools.build.lib.analysis.RuleDefinition; |
| import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment; |
| import com.google.devtools.build.lib.packages.RuleClass; |
| import com.google.devtools.build.lib.syntax.Type; |
| |
| /** Rule definition for {@link ConstraintSetting}. */ |
| public class ConstraintSettingRule implements RuleDefinition { |
| public static final String RULE_NAME = "constraint_setting"; |
| |
| @Override |
| public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env) { |
| return builder |
| .override( |
| attr("tags", Type.STRING_LIST) |
| // No need to show up in ":all", etc. target patterns. |
| .value(ImmutableList.of("manual")) |
| .nonconfigurable("low-level attribute, used in platform configuration")) |
| .removeAttribute("deps") |
| .removeAttribute("data") |
| .exemptFromConstraintChecking("this rule *defines* a constraint") |
| .build(); |
| } |
| |
| @Override |
| public RuleDefinition.Metadata getMetadata() { |
| return RuleDefinition.Metadata.builder() |
| .name(RULE_NAME) |
| .ancestors(BaseRuleClasses.RuleBase.class) |
| .factoryClass(ConstraintSetting.class) |
| .build(); |
| } |
| } |
| /*<!-- #BLAZE_RULE (NAME = constraint_setting, TYPE = OTHER, FAMILY = Platform)[GENERIC_RULE] --> |
| |
| <p>This rule defines a type of constraint that can be used to define an execution platform.</p> |
| |
| <!-- #END_BLAZE_RULE -->*/ |