| // 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.devtools.build.lib.packages.SkylarkClassObject; |
| import com.google.devtools.build.lib.rules.apple.AppleToolchain; |
| import com.google.devtools.build.lib.rules.apple.Platform.PlatformType; |
| 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.skylarkinterface.SkylarkSignature; |
| import com.google.devtools.build.lib.syntax.BuiltinFunction; |
| import com.google.devtools.build.lib.syntax.SkylarkDict; |
| import com.google.devtools.build.lib.syntax.SkylarkSignatureProcessor; |
| |
| import java.util.Map.Entry; |
| 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 or '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 SkylarkClassObject platformType; |
| |
| @SkylarkCallable( |
| name = "apple_toolchain", |
| doc = "Utilities for resolving items from the apple toolchain." |
| ) |
| public AppleToolchain getAppleToolchain() { |
| return new AppleToolchain(); |
| } |
| |
| @SkylarkCallable( |
| name = "platform_type", |
| doc = "Returns a struct containing fields corresponding to Apple platform types: 'ios', " |
| + "'watchos', 'tvos', and 'macosx'. These values can be passed to methods that expect a " |
| + "platform type, like the 'apple' configuration fragment's 'multi_arch_platform' " |
| + "method. For example, ctx.fragments.apple.multi_arch_platform(apple_common." |
| + "platform_type.ios).", |
| structField = true |
| ) |
| public SkylarkClassObject getPlatformTypeStruct() { |
| if (platformType == null) { |
| platformType = PlatformType.getSkylarkStruct(); |
| } |
| return platformType; |
| } |
| |
| @SkylarkSignature( |
| name = "new_objc_provider", |
| objectType = AppleSkylarkCommon.class, |
| returnType = ObjcProvider.class, |
| doc = "Creates a new ObjcProvider instance.", |
| parameters = { |
| @Param(name = "self", type = AppleSkylarkCommon.class, doc = "The apple_common instance."), |
| @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" |
| ) |
| ) |
| public static final BuiltinFunction NEW_OBJC_PROVIDER = |
| new BuiltinFunction("new_objc_provider") { |
| @SuppressWarnings("unused") |
| // This method is registered statically for skylark, and never called directly. |
| public ObjcProvider invoke( |
| AppleSkylarkCommon self, Boolean usesSwift, SkylarkDict<String, Object> kwargs) { |
| ObjcProvider.Builder resultBuilder = new ObjcProvider.Builder(); |
| if (usesSwift) { |
| resultBuilder.add(ObjcProvider.FLAG, ObjcProvider.Flag.USES_SWIFT); |
| } |
| for (Entry<String, Object> entry : kwargs.entrySet()) { |
| Key<?> key = ObjcProvider.getSkylarkKeyForString(entry.getKey()); |
| if (key != null) { |
| resultBuilder.addElementsFromSkylark(key, entry.getValue()); |
| } else if (entry.getKey().equals("providers")) { |
| resultBuilder.addProvidersFromSkylark(entry.getValue()); |
| } else { |
| throw new IllegalArgumentException(String.format(BAD_KEY_ERROR, entry.getKey())); |
| } |
| } |
| return resultBuilder.build(); |
| } |
| }; |
| |
| static { |
| SkylarkSignatureProcessor.configureSkylarkFunctions(AppleSkylarkCommon.class); |
| } |
| } |
| |