// 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.rules.repository;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
import com.google.devtools.build.lib.analysis.VisibilityProvider;
import com.google.devtools.build.lib.analysis.VisibilityProviderImpl;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.collect.nestedset.Order;
import com.google.devtools.build.lib.packages.PackageSpecification;
import com.google.devtools.build.lib.rules.AliasConfiguredTarget;
import com.google.devtools.build.lib.rules.AliasProvider;
import com.google.devtools.build.lib.rules.RuleConfiguredTargetFactory;
/**
* Implementation for the bind rule.
*/
public class Bind implements RuleConfiguredTargetFactory {
@Override
public ConfiguredTarget create(RuleContext ruleContext)
throws InterruptedException, RuleErrorException {
if (ruleContext.getPrerequisite("actual", Mode.TARGET) == null) {
ruleContext.ruleError(String.format("The external label '%s' is not bound to anything",
ruleContext.getLabel()));
return null;
}
ConfiguredTarget actual = (ConfiguredTarget) ruleContext.getPrerequisite("actual", Mode.TARGET);
return new AliasConfiguredTarget(
ruleContext.getConfiguration(),
actual,
ImmutableMap.<Class<? extends TransitiveInfoProvider>, TransitiveInfoProvider>of(
AliasProvider.class, AliasProvider.fromAliasRule(ruleContext.getLabel(), actual),
VisibilityProvider.class, new VisibilityProviderImpl(
NestedSetBuilder.create(Order.STABLE_ORDER, PackageSpecification.everything()))));
}
}