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// Copyright 2016 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.objc;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.MULTI_ARCH_LINKED_ARCHIVES;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableListMultimap;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
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.config.BuildConfiguration;
import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.rules.apple.AppleConfiguration;
import com.google.devtools.build.lib.rules.apple.ApplePlatform.PlatformType;
import com.google.devtools.build.lib.rules.cpp.CcLinkingInfo;
import com.google.devtools.build.lib.rules.cpp.CcToolchainProvider;
import com.google.devtools.build.lib.rules.cpp.CppHelper;
import com.google.devtools.build.lib.rules.objc.ObjcProvider.Key;
import com.google.devtools.build.lib.rules.proto.ProtoSourcesProvider;
import com.google.devtools.build.lib.skyframe.ConfiguredTargetAndData;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
/**
* Implementation for the "apple_static_library" rule.
*/
public class AppleStaticLibrary implements RuleConfiguredTargetFactory {
/**
* Set of {@link ObjcProvider} values which are propagated from dependencies to dependers by
* this rule.
*/
private static final ImmutableSet<Key<?>> PROPAGATE_KEYS =
ImmutableSet.<Key<?>>of(
ObjcProvider.ASSET_CATALOG,
ObjcProvider.BUNDLE_FILE,
ObjcProvider.SDK_DYLIB,
ObjcProvider.SDK_FRAMEWORK,
ObjcProvider.STORYBOARD,
ObjcProvider.STRINGS,
ObjcProvider.WEAK_SDK_FRAMEWORK,
ObjcProvider.XCDATAMODEL,
ObjcProvider.XIB,
ObjcProvider.XCASSETS_DIR);
@VisibleForTesting
static final String UNSUPPORTED_PLATFORM_TYPE_ERROR_FORMAT =
"Unsupported platform type \"%s\"";
@Override
public final ConfiguredTarget create(RuleContext ruleContext)
throws InterruptedException, RuleErrorException, ActionConflictException {
MultiArchSplitTransitionProvider.validateMinimumOs(ruleContext);
PlatformType platformType = MultiArchSplitTransitionProvider.getPlatformType(ruleContext);
ImmutableListMultimap<BuildConfiguration, ConfiguredTargetAndData>
configToCTATDepsCollectionMap =
ruleContext.getPrerequisiteCofiguredTargetAndTargetsByConfiguration("deps", Mode.SPLIT);
ImmutableListMultimap<BuildConfiguration, ObjcProvider> configToObjcAvoidDepsMap =
ruleContext.getPrerequisitesByConfiguration(AppleStaticLibraryRule.AVOID_DEPS_ATTR_NAME,
Mode.SPLIT, ObjcProvider.SKYLARK_CONSTRUCTOR);
ImmutableListMultimap<BuildConfiguration, CcLinkingInfo> configToCcAvoidDepsMap =
ruleContext.getPrerequisitesByConfiguration(
AppleStaticLibraryRule.AVOID_DEPS_ATTR_NAME, Mode.SPLIT, CcLinkingInfo.PROVIDER);
Iterable<ObjcProtoProvider> avoidProtoProviders =
ruleContext.getPrerequisites(AppleStaticLibraryRule.AVOID_DEPS_ATTR_NAME, Mode.TARGET,
ObjcProtoProvider.SKYLARK_CONSTRUCTOR);
NestedSet<Artifact> protosToAvoid = protoArtifactsToAvoid(avoidProtoProviders);
Map<BuildConfiguration, CcToolchainProvider> childConfigurationsAndToolchains =
MultiArchBinarySupport.getChildConfigurationsAndToolchains(ruleContext);
IntermediateArtifacts ruleIntermediateArtifacts =
ObjcRuleClasses.intermediateArtifacts(ruleContext);
NestedSetBuilder<Artifact> librariesToLipo =
NestedSetBuilder.<Artifact>stableOrder();
NestedSetBuilder<Artifact> filesToBuild =
NestedSetBuilder.<Artifact>stableOrder()
.add(ruleIntermediateArtifacts.combinedArchitectureArchive());
ObjcProvider.Builder objcProviderBuilder =
new ObjcProvider.Builder(ruleContext.getAnalysisEnvironment().getSkylarkSemantics());
ImmutableListMultimap<BuildConfiguration, ObjcProtoProvider> objcProtoProvidersMap =
ruleContext.getPrerequisitesByConfiguration("deps", Mode.SPLIT,
ObjcProtoProvider.SKYLARK_CONSTRUCTOR);
Map<String, NestedSet<Artifact>> outputGroupCollector = new TreeMap<>();
for (Map.Entry<BuildConfiguration, CcToolchainProvider> childConfigAndToolchain :
childConfigurationsAndToolchains.entrySet()) {
BuildConfiguration childConfig = childConfigAndToolchain.getKey();
CcToolchainProvider childToolchain = childConfigAndToolchain.getValue();
Iterable<ObjcProtoProvider> objcProtoProviders = objcProtoProvidersMap.get(childConfig);
ProtobufSupport protoSupport =
new ProtobufSupport(
ruleContext,
childConfig,
protosToAvoid,
ImmutableList.<ProtoSourcesProvider>of(),
objcProtoProviders,
ProtobufSupport.getTransitivePortableProtoFilters(objcProtoProviders),
childConfigurationsAndToolchains.get(childConfig))
.registerGenerationActions()
.registerCompilationActions();
Optional<ObjcProvider> protosObjcProvider = protoSupport.getObjcProvider();
IntermediateArtifacts intermediateArtifacts =
ObjcRuleClasses.intermediateArtifacts(ruleContext, childConfig);
ObjcCommon common =
common(
ruleContext,
childConfig,
intermediateArtifacts,
nullToEmptyList(configToCTATDepsCollectionMap.get(childConfig)),
protosObjcProvider);
ObjcProvider objcProvider =
common.getObjcProvider().subtractSubtrees(configToObjcAvoidDepsMap.get(childConfig),
configToCcAvoidDepsMap.get(childConfig));
librariesToLipo.add(intermediateArtifacts.strippedSingleArchitectureLibrary());
CompilationSupport compilationSupport =
new CompilationSupport.Builder()
.setRuleContext(ruleContext)
.setConfig(childConfig)
.setToolchainProvider(childToolchain)
.setOutputGroupCollector(outputGroupCollector)
.build();
compilationSupport
.registerCompileAndArchiveActions(
common.getCompilationArtifacts().get(),
objcProvider,
childConfigurationsAndToolchains.get(childConfig))
.registerFullyLinkAction(
objcProvider,
intermediateArtifacts.strippedSingleArchitectureLibrary(),
childConfigurationsAndToolchains.get(childConfig),
CppHelper.getFdoSupportUsingDefaultCcToolchainAttribute(ruleContext))
.validateAttributes();
ruleContext.assertNoErrors();
addTransitivePropagatedKeys(objcProviderBuilder, objcProvider);
}
AppleConfiguration appleConfiguration = ruleContext.getFragment(AppleConfiguration.class);
new LipoSupport(ruleContext)
.registerCombineArchitecturesAction(
librariesToLipo.build(),
ruleIntermediateArtifacts.combinedArchitectureArchive(),
appleConfiguration.getMultiArchPlatform(platformType));
RuleConfiguredTargetBuilder targetBuilder =
ObjcRuleClasses.ruleConfiguredTarget(ruleContext, filesToBuild.build());
objcProviderBuilder.add(
MULTI_ARCH_LINKED_ARCHIVES, ruleIntermediateArtifacts.combinedArchitectureArchive());
ObjcProvider objcProvider = objcProviderBuilder.build();
if (appleConfiguration.shouldLinkingRulesPropagateObjc()) {
targetBuilder.addNativeDeclaredProvider(objcProvider);
}
targetBuilder
.addNativeDeclaredProvider(
new AppleStaticLibraryInfo(
ruleIntermediateArtifacts.combinedArchitectureArchive(),
objcProvider))
.addOutputGroups(outputGroupCollector);
return targetBuilder.build();
}
private void addTransitivePropagatedKeys(ObjcProvider.Builder objcProviderBuilder,
ObjcProvider provider) {
for (Key<?> key : PROPAGATE_KEYS) {
objcProviderBuilder.addTransitiveAndPropagate(key, provider);
}
}
private ObjcCommon common(
RuleContext ruleContext,
BuildConfiguration buildConfiguration,
IntermediateArtifacts intermediateArtifacts,
List<ConfiguredTargetAndData> propagatedConfigredTargetAndTargetDeps,
Optional<ObjcProvider> protosObjcProvider) throws InterruptedException {
CompilationArtifacts compilationArtifacts = new CompilationArtifacts.Builder().build();
return new ObjcCommon.Builder(ruleContext, buildConfiguration)
.setCompilationAttributes(
CompilationAttributes.Builder.fromRuleContext(ruleContext).build())
.setCompilationArtifacts(compilationArtifacts)
.addDeps(propagatedConfigredTargetAndTargetDeps)
.addDepObjcProviders(protosObjcProvider.asSet())
.setIntermediateArtifacts(intermediateArtifacts)
.setAlwayslink(false)
.build();
}
private <T> List<T> nullToEmptyList(List<T> inputList) {
return inputList != null ? inputList : ImmutableList.<T>of();
}
private static NestedSet<Artifact> protoArtifactsToAvoid(
Iterable<ObjcProtoProvider> avoidedProviders) {
NestedSetBuilder<Artifact> avoidArtifacts = NestedSetBuilder.stableOrder();
for (ObjcProtoProvider avoidProvider : avoidedProviders) {
for (NestedSet<Artifact> avoidProviderOutputGroup : avoidProvider.getProtoGroups()) {
avoidArtifacts.addTransitive(avoidProviderOutputGroup);
}
}
return avoidArtifacts.build();
}
}
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