// 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 com.google.common.annotations.VisibleForTesting; import com.google.common.collect.ImmutableMap; import com.google.common.collect.Iterables; import com.google.devtools.build.lib.actions.Artifact; import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException; import com.google.devtools.build.lib.analysis.RuleContext; import com.google.devtools.build.lib.analysis.skylark.SkylarkRuleContext; import com.google.devtools.build.lib.collect.nestedset.NestedSet; 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.Attribute.SplitTransitionProvider; import com.google.devtools.build.lib.packages.Info; import com.google.devtools.build.lib.packages.NativeInfo; import com.google.devtools.build.lib.packages.Provider; import com.google.devtools.build.lib.packages.RuleClass.ConfiguredTargetFactory.RuleErrorException; import com.google.devtools.build.lib.packages.SkylarkAspect; import com.google.devtools.build.lib.rules.apple.AppleConfiguration; import com.google.devtools.build.lib.rules.apple.ApplePlatform; import com.google.devtools.build.lib.rules.apple.ApplePlatform.PlatformType; import com.google.devtools.build.lib.rules.apple.AppleToolchain; import com.google.devtools.build.lib.rules.apple.DottedVersion; import com.google.devtools.build.lib.rules.apple.XcodeConfigProvider; import com.google.devtools.build.lib.rules.apple.XcodeVersionProperties; import com.google.devtools.build.lib.rules.objc.AppleBinary.AppleBinaryOutput; import com.google.devtools.build.lib.rules.objc.ObjcProvider.Key; import com.google.devtools.build.lib.skylarkinterface.Param; import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable; import com.google.devtools.build.lib.skylarkinterface.SkylarkModule; import com.google.devtools.build.lib.syntax.Environment; import com.google.devtools.build.lib.syntax.EvalException; import com.google.devtools.build.lib.syntax.Runtime; import com.google.devtools.build.lib.syntax.SkylarkDict; import com.google.devtools.build.lib.syntax.SkylarkNestedSet; import com.google.devtools.build.lib.syntax.SkylarkSignatureProcessor; import com.google.devtools.build.lib.vfs.PathFragment; import java.util.Map; import javax.annotation.Nullable; /** * A class that exposes apple rule implementation internals to skylark. */ @SkylarkModule( name = "apple_common", doc = "Functions for skylark to access internals of the apple rule implementations." ) public class AppleSkylarkCommon { @VisibleForTesting public static final String BAD_KEY_ERROR = "Argument %s not a recognized key, 'providers'," + " or 'direct_dep_providers'."; @VisibleForTesting public static final String BAD_SET_TYPE_ERROR = "Value for key %s must be a set of %s, instead found set of %s."; @VisibleForTesting public static final String BAD_PROVIDERS_ITER_ERROR = "Value for argument 'providers' must be a list of ObjcProvider instances, instead found %s."; @VisibleForTesting public static final String BAD_PROVIDERS_ELEM_ERROR = "Value for argument 'providers' must be a list of ObjcProvider instances, instead found " + "iterable with %s."; @VisibleForTesting public static final String NOT_SET_ERROR = "Value for key %s must be a set, instead found %s."; @VisibleForTesting public static final String MISSING_KEY_ERROR = "No value for required key %s was present."; @Nullable private Info platformType; @Nullable private Info platform; private ObjcProtoAspect objcProtoAspect; public AppleSkylarkCommon(ObjcProtoAspect objcProtoAspect) { this.objcProtoAspect = objcProtoAspect; } @SkylarkCallable( name = "apple_toolchain", doc = "Utilities for resolving items from the apple toolchain." ) public AppleToolchain getAppleToolchain() { return new AppleToolchain(); } @SkylarkCallable( name = "platform_type", doc = "An enum-like struct that contains the following fields corresponding to Apple platform " + "types:

" + "These values can be passed to methods that expect a platform type, like the 'apple' " + "configuration fragment's " + "multi_arch_platform method.

" + "Example:

" + "

\n"
            + "ctx.fragments.apple.multi_arch_platform(apple_common.platform_type.ios)\n"
            + "
", structField = true ) public Info getPlatformTypeStruct() { if (platformType == null) { platformType = PlatformType.getSkylarkStruct(); } return platformType; } @SkylarkCallable( name = "platform", doc = "An enum-like struct that contains the following fields corresponding to Apple " + "platforms:

" + "These values can be passed to methods that expect a platform, like " + "apple.sdk_version_for_platform.", structField = true ) public Info getPlatformStruct() { if (platform == null) { platform = ApplePlatform.getSkylarkStruct(); } return platform; } @SkylarkCallable( name = XcodeVersionProperties.SKYLARK_NAME, doc = "The constructor/key for the XcodeVersionProperties provider.

" + "If a target propagates the XcodeVersionProperties provider," + " use this as the key with which to retrieve it. Example:
" + "

\n"
            + "dep = ctx.attr.deps[0]\n"
            + "p = dep[apple_common.XcodeVersionProperties]\n"
            + "
", structField = true ) public Provider getXcodeVersionPropertiesConstructor() { return XcodeVersionProperties.SKYLARK_CONSTRUCTOR; } @SkylarkCallable( name = XcodeConfigProvider.SKYLARK_NAME, doc = "The constructor/key for the XcodeVersionConfig provider.", structField = true ) public Provider getXcodeVersionConfigConstructor() { return XcodeConfigProvider.PROVIDER; } @SkylarkCallable( // TODO(b/63899207): This currently does not match ObjcProvider.SKYLARK_NAME as it requires // a migration of existing skylark rules. name = "Objc", doc = "The constructor/key for the Objc provider.

" + "If a target propagates the Objc provider, use this as the " + "key with which to retrieve it. Example:
" + "

\n"
            + "dep = ctx.attr.deps[0]\n"
            + "p = dep[apple_common.Objc]\n"
            + "
", structField = true ) public Provider getObjcProviderConstructor() { return ObjcProvider.SKYLARK_CONSTRUCTOR; } @SkylarkCallable( name = AppleDynamicFrameworkInfo.SKYLARK_NAME, doc = "The constructor/key for the AppleDynamicFramework provider.

" + "If a target propagates the AppleDynamicFramework provider, use this " + "as the key with which to retrieve it. Example:
" + "

\n"
            + "dep = ctx.attr.deps[0]\n"
            + "p = dep[apple_common.AppleDynamicFramework]\n"
            + "
", structField = true ) public Provider getAppleDynamicFrameworkConstructor() { return AppleDynamicFrameworkInfo.SKYLARK_CONSTRUCTOR; } @SkylarkCallable( name = AppleDylibBinaryInfo.SKYLARK_NAME, doc = "The constructor/key for the AppleDylibBinary provider.

" + "If a target propagates the AppleDylibBinary provider, use this as the " + "key with which to retrieve it. Example:
" + "

\n"
            + "dep = ctx.attr.deps[0]\n"
            + "p = dep[apple_common.AppleDylibBinary]\n"
            + "
", structField = true ) public Provider getAppleDylibBinaryConstructor() { return AppleDylibBinaryInfo.SKYLARK_CONSTRUCTOR; } @SkylarkCallable( name = AppleExecutableBinaryInfo.SKYLARK_NAME, doc = "The constructor/key for the AppleExecutableBinary provider.

" + "If a target propagates the AppleExecutableBinary provider," + " use this as the key with which to retrieve it. Example:
" + "

\n"
            + "dep = ctx.attr.deps[0]\n"
            + "p = dep[apple_common.AppleExecutableBinary]\n"
            + "
", structField = true ) public Provider getAppleExecutableBinaryConstructor() { return AppleExecutableBinaryInfo.SKYLARK_CONSTRUCTOR; } @SkylarkCallable( name = AppleStaticLibraryInfo.SKYLARK_NAME, doc = "The constructor/key for the AppleStaticLibrary provider.

" + "If a target propagates the AppleStaticLibrary provider, use " + "this as the key with which to retrieve it. Example:
" + "

\n"
            + "dep = ctx.attr.deps[0]\n"
            + "p = dep[apple_common.AppleStaticLibrary]\n"
            + "
", structField = true ) public AppleStaticLibraryInfo.Provider getAppleStaticLibraryProvider() { return AppleStaticLibraryInfo.SKYLARK_CONSTRUCTOR; } @SkylarkCallable( name = AppleDebugOutputsInfo.SKYLARK_NAME, doc = "The constructor/key for the AppleDebugOutputs provider.

" + "If a target propagates the AppleDebugOutputs provider, use this as the " + "key with which to retrieve it. Example:
" + "

\n"
            + "dep = ctx.attr.deps[0]\n"
            + "p = dep[apple_common.AppleDebugOutputs]\n"
            + "
", structField = true ) public Provider getAppleDebugOutputsConstructor() { return AppleDebugOutputsInfo.SKYLARK_CONSTRUCTOR; } @SkylarkCallable( name = AppleLoadableBundleBinaryInfo.SKYLARK_NAME, doc = "The constructor/key for the AppleLoadableBundleBinary provider.

" + "If a target propagates the AppleLoadableBundleBinary provider, " + "use this as the key with which to retrieve it. Example:
" + "

\n"
            + "dep = ctx.attr.deps[0]\n"
            + "p = dep[apple_common.AppleLoadableBundleBinary]\n"
            + "
", structField = true ) public Provider getAppleLoadableBundleBinaryConstructor() { return AppleLoadableBundleBinaryInfo.SKYLARK_CONSTRUCTOR; } @SkylarkCallable( name = "apple_host_system_env", doc = "Returns a dict of environment variables that should be set " + "for actions that need to run build tools on an Apple host system, such as the " + " version of Xcode that should be used. The keys are variable names and the values " + " are their corresponding values." ) public ImmutableMap getAppleHostSystemEnv(XcodeConfigProvider xcodeConfig) { return AppleConfiguration.getXcodeVersionEnv(xcodeConfig.getXcodeVersion()); } @SkylarkCallable( name = "target_apple_env", doc = "Returns a dict of environment variables that should be set for actions " + "that build targets of the given Apple platform type. For example, this dictionary " + "contains variables that denote the platform name and SDK version with which to " + "build. The keys are variable names and the values are their corresponding values." ) public ImmutableMap getTargetAppleEnvironment( XcodeConfigProvider xcodeConfig, ApplePlatform platform) { return AppleConfiguration.appleTargetPlatformEnv( platform, xcodeConfig.getSdkVersionForPlatform(platform)); } @SkylarkCallable( name = "multi_arch_split", doc = "A configuration transition for rule attributes to build dependencies in one or" + " more Apple platforms. " + "

Use of this transition requires that the 'platform_type' and 'minimum_os_version'" + " string attributes are defined and mandatory on the rule.

" + "

The value of the platform_type attribute will dictate the target architectures " + " for which dependencies along this configuration transition will be built.

" + "

Options are:

" + "" + "

minimum_os_version should be a dotted version string such as '7.3', and is used to" + " set the minimum operating system on the configuration similarly based on platform" + " type. For example, specifying platform_type 'ios' and minimum_os_version '8.0' will" + " ensure that dependencies are built with minimum iOS version '8.0'.", structField = true ) public SplitTransitionProvider getMultiArchSplitProvider() { return new MultiArchSplitTransitionProvider(); } @SkylarkCallable( name = "new_objc_provider", doc = "Creates a new ObjcProvider instance.", parameters = { @Param( name = "uses_swift", type = Boolean.class, defaultValue = "False", named = true, positional = false, doc = "Whether this provider should enable Swift support." ) }, extraKeywords = @Param( name = "kwargs", type = SkylarkDict.class, defaultValue = "{}", doc = "Dictionary of arguments." ), useEnvironment = true ) // This method is registered statically for skylark, and never called directly. public ObjcProvider newObjcProvider( Boolean usesSwift, SkylarkDict kwargs, Environment environment) { boolean disableObjcResourceKeys = environment.getSemantics().incompatibleDisableObjcProviderResources(); ObjcProvider.Builder resultBuilder = new ObjcProvider.Builder(environment.getSemantics()); if (usesSwift) { resultBuilder.add(ObjcProvider.FLAG, ObjcProvider.Flag.USES_SWIFT); } for (Map.Entry entry : kwargs.entrySet()) { Key key = ObjcProvider.getSkylarkKeyForString((String) entry.getKey()); if (key != null) { if (disableObjcResourceKeys && ObjcProvider.isDeprecatedResourceKey(key)) { throw new IllegalArgumentException(String.format(BAD_KEY_ERROR, entry.getKey())); } resultBuilder.addElementsFromSkylark(key, entry.getValue()); } else if (entry.getKey().equals("providers")) { resultBuilder.addProvidersFromSkylark(entry.getValue()); } else if (entry.getKey().equals("direct_dep_providers")) { resultBuilder.addDirectDepProvidersFromSkylark(entry.getValue()); } else { throw new IllegalArgumentException(String.format(BAD_KEY_ERROR, entry.getKey())); } } return resultBuilder.build(); } @SkylarkCallable( name = "new_dynamic_framework_provider", doc = "Creates a new AppleDynamicFramework provider instance.", parameters = { @Param( name = AppleDynamicFrameworkInfo.DYLIB_BINARY_FIELD_NAME, type = Artifact.class, named = true, positional = false, doc = "The dylib binary artifact of the dynamic framework." ), @Param( name = AppleDynamicFrameworkInfo.OBJC_PROVIDER_FIELD_NAME, type = ObjcProvider.class, named = true, positional = false, doc = "An ObjcProvider which contains information about the transitive " + "dependencies linked into the binary." ), @Param( name = AppleDynamicFrameworkInfo.FRAMEWORK_DIRS_FIELD_NAME, type = SkylarkNestedSet.class, generic1 = String.class, named = true, noneable = true, positional = false, defaultValue = "None", doc = "The framework path names used as link inputs in order to link against the dynamic " + "framework." ), @Param( name = AppleDynamicFrameworkInfo.FRAMEWORK_FILES_FIELD_NAME, type = SkylarkNestedSet.class, generic1 = Artifact.class, named = true, noneable = true, positional = false, defaultValue = "None", doc = "The full set of artifacts that should be included as inputs to link against the " + "dynamic framework" ) } ) public AppleDynamicFrameworkInfo newDynamicFrameworkProvider( Artifact dylibBinary, ObjcProvider depsObjcProvider, Object dynamicFrameworkDirs, Object dynamicFrameworkFiles) { NestedSet frameworkDirs; if (dynamicFrameworkDirs == Runtime.NONE) { frameworkDirs = NestedSetBuilder.emptySet(Order.STABLE_ORDER); } else { Iterable pathStrings = ((SkylarkNestedSet) dynamicFrameworkDirs).getSet(String.class); frameworkDirs = NestedSetBuilder.stableOrder() .addAll(Iterables.transform(pathStrings, PathFragment::create)) .build(); } NestedSet frameworkFiles = dynamicFrameworkFiles != Runtime.NONE ? ((SkylarkNestedSet) dynamicFrameworkFiles).getSet(Artifact.class) : NestedSetBuilder.emptySet(Order.STABLE_ORDER); return new AppleDynamicFrameworkInfo( dylibBinary, depsObjcProvider, frameworkDirs, frameworkFiles); } @SkylarkCallable( name = "link_multi_arch_binary", doc = "Links a (potentially multi-architecture) binary targeting Apple platforms. This " + "method comprises a bulk of the logic of the apple_binary rule, and is " + "exposed as an API to iterate on migration of apple_binary to skylark.\n" + "

This API is highly experimental and subject to change at any time. Do not " + "depend on the stability of this function at this time.", mandatoryPositionals = 1 // The SkylarkRuleContext. ) // TODO(b/70937317): Iterate on, improve, and solidify this API. public NativeInfo linkMultiArchBinary(SkylarkRuleContext skylarkRuleContext) throws EvalException, InterruptedException { try { RuleContext ruleContext = skylarkRuleContext.getRuleContext(); AppleBinaryOutput appleBinaryOutput = AppleBinary.linkMultiArchBinary(ruleContext); return appleBinaryOutput.getBinaryInfoProvider(); } catch (RuleErrorException | ActionConflictException exception) { throw new EvalException(null, exception); } } @SkylarkCallable( name = "dotted_version", doc = "Creates a new DottedVersion instance.", parameters = { @Param( name = "version", type = String.class, doc = "The string representation of the DottedVersion." ) } ) public DottedVersion dottedVersion(String version) { return DottedVersion.fromString(version); } @SkylarkCallable( name = "objc_proto_aspect", doc = "objc_proto_aspect gathers the proto dependencies of the attached rule target," + "and propagates the proto values of its dependencies through the ObjcProto provider.", structField = true ) public SkylarkAspect getObjcProtoAspect() { return objcProtoAspect; } static { SkylarkSignatureProcessor.configureSkylarkFunctions(AppleSkylarkCommon.class); } }