| // 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.bazel.rules.cpp; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.analysis.RuleContext; |
| import com.google.devtools.build.lib.analysis.RuleErrorConsumer; |
| import com.google.devtools.build.lib.analysis.TransitiveInfoCollection; |
| import com.google.devtools.build.lib.analysis.config.BuildConfigurationValue; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.packages.AspectDescriptor; |
| import com.google.devtools.build.lib.packages.Provider; |
| import com.google.devtools.build.lib.packages.StarlarkProvider; |
| import com.google.devtools.build.lib.packages.StructImpl; |
| import com.google.devtools.build.lib.rules.cpp.AspectLegalCppSemantics; |
| import com.google.devtools.build.lib.rules.cpp.CcCommon.Language; |
| import com.google.devtools.build.lib.rules.cpp.CcToolchainFeatures.FeatureConfiguration; |
| import com.google.devtools.build.lib.rules.cpp.CcToolchainProvider; |
| import com.google.devtools.build.lib.rules.cpp.CppActionNames; |
| import com.google.devtools.build.lib.rules.cpp.CppCompileActionBuilder; |
| import com.google.devtools.build.lib.rules.cpp.CppConfiguration; |
| import com.google.devtools.build.lib.rules.cpp.CppConfiguration.HeadersCheckingMode; |
| import com.google.devtools.build.lib.rules.cpp.CppFileTypes; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.SerializationConstant; |
| import javax.annotation.Nullable; |
| |
| /** C++ compilation semantics. */ |
| public class BazelCppSemantics implements AspectLegalCppSemantics { |
| @SerializationConstant |
| public static final BazelCppSemantics CPP = new BazelCppSemantics(Language.CPP); |
| |
| @SerializationConstant |
| public static final BazelCppSemantics OBJC = new BazelCppSemantics(Language.OBJC); |
| |
| // TODO(#10338): We need to check for both providers. With and without the @rules_cc repo name. |
| // The reason for that is that when we are in a target inside @rules_cc, the provider won't have |
| // the repo name set. |
| public static final Provider.Key CC_SHARED_INFO_PROVIDER_RULES_CC = |
| new StarlarkProvider.Key( |
| Label.parseAbsoluteUnchecked("@rules_cc//examples:experimental_cc_shared_library.bzl"), |
| "CcSharedLibraryInfo"); |
| |
| public static final Provider.Key CC_SHARED_INFO_PROVIDER = |
| new StarlarkProvider.Key( |
| Label.parseAbsoluteUnchecked("//examples:experimental_cc_shared_library.bzl"), |
| "CcSharedLibraryInfo"); |
| |
| public static final Provider.Key CC_SHARED_INFO_PROVIDER_BUILT_INS = |
| new StarlarkProvider.Key( |
| Label.parseAbsoluteUnchecked("@_builtins//:common/cc/experimental_cc_shared_library.bzl"), |
| "CcSharedLibraryInfo"); |
| |
| private final Language language; |
| |
| private BazelCppSemantics(Language language) { |
| this.language = language; |
| } |
| |
| @Override |
| public Language language() { |
| return language; |
| } |
| |
| @Override |
| public void finalizeCompileActionBuilder( |
| BuildConfigurationValue configuration, |
| FeatureConfiguration featureConfiguration, |
| CppCompileActionBuilder actionBuilder, |
| RuleErrorConsumer ruleErrorConsumer) { |
| CcToolchainProvider toolchain = actionBuilder.getToolchain(); |
| if (language == Language.CPP) { |
| CppConfiguration cppConfig = configuration.getFragment(CppConfiguration.class); |
| Artifact sourceFile = actionBuilder.getSourceFile(); |
| actionBuilder |
| .addTransitiveMandatoryInputs( |
| cppConfig.useSpecificToolFiles() && !actionBuilder.getSourceFile().isTreeArtifact() |
| ? (actionBuilder.getActionName().equals(CppActionNames.ASSEMBLE) |
| ? toolchain.getAsFiles() |
| : toolchain.getCompilerFiles()) |
| : toolchain.getAllFiles()) |
| .setShouldScanIncludes( |
| cppConfig.experimentalIncludeScanning() |
| && featureConfiguration.getRequestedFeatures().contains("cc_include_scanning") |
| && !sourceFile.isFileType(CppFileTypes.ASSEMBLER) |
| && !sourceFile.isFileType(CppFileTypes.CPP_MODULE)); |
| } else { |
| actionBuilder |
| .addTransitiveMandatoryInputs(toolchain.getAllFilesIncludingLibc()) |
| .setShouldScanIncludes(false); |
| } |
| } |
| |
| @Override |
| public HeadersCheckingMode determineHeadersCheckingMode(RuleContext ruleContext) { |
| return HeadersCheckingMode.STRICT; |
| } |
| |
| @Override |
| public HeadersCheckingMode determineStarlarkHeadersCheckingMode( |
| RuleContext ruleContext, CppConfiguration cppConfig, CcToolchainProvider toolchain) { |
| if (cppConfig.strictHeaderCheckingFromStarlark()) { |
| return HeadersCheckingMode.STRICT; |
| } |
| return HeadersCheckingMode.LOOSE; |
| } |
| |
| @Override |
| public boolean allowIncludeScanning() { |
| return true; |
| } |
| |
| @Override |
| public boolean needsDotdInputPruning(BuildConfigurationValue configuration) { |
| if (language == Language.CPP) { |
| return true; |
| } else { |
| return configuration.getFragment(CppConfiguration.class).objcShouldGenerateDotdFiles(); |
| } |
| } |
| |
| @Override |
| public void validateAttributes(RuleContext ruleContext) { |
| } |
| |
| @Override |
| public boolean needsIncludeValidation() { |
| return language != Language.OBJC; |
| } |
| |
| @Override |
| @Nullable |
| public StructImpl getCcSharedLibraryInfo(TransitiveInfoCollection dep) { |
| StructImpl ccSharedLibraryInfo = (StructImpl) dep.get(CC_SHARED_INFO_PROVIDER); |
| if (ccSharedLibraryInfo != null) { |
| return ccSharedLibraryInfo; |
| } |
| ccSharedLibraryInfo = (StructImpl) dep.get(CC_SHARED_INFO_PROVIDER_RULES_CC); |
| if (ccSharedLibraryInfo != null) { |
| return ccSharedLibraryInfo; |
| } |
| ccSharedLibraryInfo = (StructImpl) dep.get(CC_SHARED_INFO_PROVIDER_BUILT_INS); |
| if (ccSharedLibraryInfo != null) { |
| return ccSharedLibraryInfo; |
| } |
| return null; |
| } |
| |
| @Override |
| public void validateLayeringCheckFeatures( |
| RuleContext ruleContext, |
| AspectDescriptor aspectDescriptor, |
| CcToolchainProvider ccToolchain, |
| ImmutableSet<String> unsupportedFeatures) {} |
| |
| @Override |
| public boolean createEmptyArchive() { |
| return false; |
| } |
| |
| @Override |
| public void checkCanUseImplementationDeps(RuleContext ruleContext) { |
| boolean experimentalCcImplementationDeps = |
| ruleContext.getFragment(CppConfiguration.class).experimentalCcImplementationDeps(); |
| if (!experimentalCcImplementationDeps |
| && ruleContext.attributes().isAttributeValueExplicitlySpecified("implementation_deps")) { |
| ruleContext.attributeError( |
| "implementation_deps", "requires --experimental_cc_implementation_deps"); |
| } |
| } |
| } |