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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.java.proto;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.analysis.AnalysisUtils;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget;
import com.google.devtools.build.lib.rules.cpp.CcLinkingInfo;
import com.google.devtools.build.lib.rules.java.JavaCcLinkParamsProvider;
import java.util.ArrayList;
import java.util.List;
/**
* Methods that all java_xxx_proto_library rules use to construct JavaCcLinkParamsProvider's.
*/
public class JplCcLinkParams {
/**
* Creates a CcLinkParamsStore based on 'deps' and an explicit list of proto runtimes, in the
* context of a java_xxx_proto_library and its aspects.
*
* @param ruleContext used to extract 'deps'. the 'deps' are expected to provide
* JavaProtoLibraryAspectProvider, which is the case when a java_xxx_proto_library rule
* depends on proto_library's with the aspect, and when an aspect node depends on its
* dependency's aspect node.
* @param protoRuntimes a list of java_library.
*/
public static JavaCcLinkParamsProvider createCcLinkParamsStore(
final RuleContext ruleContext, final ImmutableList<TransitiveInfoCollection> protoRuntimes) {
List<JavaCcLinkParamsProvider> providers = new ArrayList<>();
for (TransitiveInfoCollection t :
ruleContext.getPrerequisites("deps", RuleConfiguredTarget.Mode.TARGET)) {
providers.add(
t.getProvider(JavaProtoLibraryAspectProvider.class)
.getTransitiveInfoProviderMap()
.getProvider(JavaCcLinkParamsProvider.class));
}
ImmutableList<CcLinkingInfo> ccLinkingInfos =
ImmutableList.<CcLinkingInfo>builder()
.addAll(
providers
.stream()
.map(JavaCcLinkParamsProvider::getCcLinkingInfo)
.collect(ImmutableList.toImmutableList()))
.addAll(AnalysisUtils.getProviders(protoRuntimes, CcLinkingInfo.PROVIDER))
.build();
return new JavaCcLinkParamsProvider(CcLinkingInfo.merge(ccLinkingInfos));
}
}
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