| // 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 com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException; |
| import com.google.devtools.build.lib.analysis.ConfiguredTarget; |
| import com.google.devtools.build.lib.analysis.FileProvider; |
| import com.google.devtools.build.lib.analysis.FilesToRunProvider; |
| import com.google.devtools.build.lib.analysis.RuleConfiguredTargetBuilder; |
| import com.google.devtools.build.lib.analysis.RuleConfiguredTargetFactory; |
| import com.google.devtools.build.lib.analysis.RuleContext; |
| import com.google.devtools.build.lib.analysis.RunfilesProvider; |
| import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget.Mode; |
| import com.google.devtools.build.lib.analysis.platform.ConstraintSettingInfo; |
| import com.google.devtools.build.lib.analysis.platform.ConstraintValueInfo; |
| import com.google.devtools.build.lib.analysis.platform.PlatformProviderUtils; |
| |
| /** Defines a potential value of a constraint. */ |
| public class ConstraintValue implements RuleConfiguredTargetFactory { |
| |
| @Override |
| public ConfiguredTarget create(RuleContext ruleContext) |
| throws InterruptedException, RuleErrorException, ActionConflictException { |
| |
| ConstraintSettingInfo constraint = |
| PlatformProviderUtils.constraintSetting( |
| ruleContext.getPrerequisite( |
| ConstraintValueRule.CONSTRAINT_SETTING_ATTR, Mode.DONT_CHECK)); |
| |
| return new RuleConfiguredTargetBuilder(ruleContext) |
| .addProvider(RunfilesProvider.class, RunfilesProvider.EMPTY) |
| .addProvider(FileProvider.class, FileProvider.EMPTY) |
| .addProvider(FilesToRunProvider.class, FilesToRunProvider.EMPTY) |
| .addNativeDeclaredProvider(ConstraintValueInfo.create(constraint, ruleContext.getLabel())) |
| .build(); |
| } |
| } |