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// 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.apple;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException;
import com.google.devtools.build.lib.analysis.AliasProvider;
import com.google.devtools.build.lib.analysis.BaseRuleClasses;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.RuleConfiguredTargetFactory;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.RuleDefinition;
import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment;
import com.google.devtools.build.lib.analysis.VisibilityProvider;
import com.google.devtools.build.lib.analysis.VisibilityProviderImpl;
import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.packages.RuleClass;
import com.google.devtools.build.lib.rules.AliasConfiguredTarget;
/**
* Implementation of the {@code xcode_config_alias} rule.
*
* <p>This rule is an alias to the {@code xcode_config} rule currently in use, which is in turn
* depends on the current configuration, in particular, the value of the {@code --xcode_config}
* flag.
*/
public class XcodeConfigAlias implements RuleConfiguredTargetFactory {
@Override
public ConfiguredTarget create(RuleContext ruleContext)
throws InterruptedException, RuleErrorException, ActionConflictException {
ConfiguredTarget actual = (ConfiguredTarget) ruleContext.getPrerequisite(
XcodeConfigRule.XCODE_CONFIG_ATTR_NAME, Mode.TARGET);
return new AliasConfiguredTarget(
ruleContext,
actual,
ImmutableMap.of(
AliasProvider.class,
AliasProvider.fromAliasRule(ruleContext.getLabel(), actual),
VisibilityProvider.class,
new VisibilityProviderImpl(ruleContext.getVisibility())));
}
/**
* Rule definition for the {@code xcode_config_alias} rule.
*
* <p>This rule is an alias to the {@code xcode_config} rule currently in use, which is in turn
* depends on the current configuration, in particular, the value of the {@code --xcode_config}
* flag.
*
* <p>This is intentionally undocumented for users; the workspace is expected to contain exactly
* one instance of this rule under {@code @bazel_tools//tools/osx} and people who want to get
* data this rule provides should depend on that one.
*/
public static class XcodeConfigAliasRule implements RuleDefinition {
@Override
public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment environment) {
return builder
.requiresConfigurationFragments(AppleConfiguration.class)
.removeAttribute("licenses")
.removeAttribute("distribs")
.build();
}
@Override
public Metadata getMetadata() {
return Metadata.builder()
.name("xcode_config_alias")
.ancestors(BaseRuleClasses.BaseRule.class, AppleToolchain.RequiresXcodeConfigRule.class)
.factoryClass(XcodeConfigAlias.class)
.build();
}
}
}
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