// 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.rules.objc; import static com.google.devtools.build.lib.packages.Attribute.ComputedDefault; import static com.google.devtools.build.lib.packages.Attribute.ConfigurationTransition.HOST; import static com.google.devtools.build.lib.packages.Attribute.attr; import static com.google.devtools.build.lib.packages.BuildType.LABEL; import static com.google.devtools.build.lib.packages.BuildType.LABEL_LIST; import static com.google.devtools.build.lib.syntax.Type.BOOLEAN; import com.google.devtools.build.lib.analysis.BaseRuleClasses; import com.google.devtools.build.lib.analysis.RuleDefinition; import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment; import com.google.devtools.build.lib.packages.AttributeMap; import com.google.devtools.build.lib.packages.RuleClass; import com.google.devtools.build.lib.packages.RuleClass.Builder; import com.google.devtools.build.lib.rules.apple.AppleConfiguration; import com.google.devtools.build.lib.syntax.Type; import com.google.devtools.build.lib.util.FileType; /** * Rule definition for objc_proto_library. * * This is a temporary rule until it is better known how to support proto_library rules. */ public class ObjcProtoLibraryRule implements RuleDefinition { static final String COMPILE_PROTOS_ATTR = "$googlemac_proto_compiler"; static final String PROTO_SUPPORT_ATTR = "$googlemac_proto_compiler_support"; static final String OPTIONS_FILE_ATTR = "options_file"; static final String OUTPUT_CPP_ATTR = "output_cpp"; static final String USE_OBJC_HEADER_NAMES_ATTR = "use_objc_header_names"; static final String PER_PROTO_INCLUDES = "per_proto_includes"; static final String LIBPROTOBUF_ATTR = "$lib_protobuf"; @Override public RuleClass build(Builder builder, final RuleDefinitionEnvironment env) { return builder .requiresConfigurationFragments(ObjcConfiguration.class, AppleConfiguration.class) /* The directly depended upon proto_library rules. */ .override(attr("deps", LABEL_LIST) // Support for files in deps is for backwards compatibility. .allowedRuleClasses("proto_library", "filegroup") .legacyAllowAnyFileType()) /* Optional options file to apply to protos which affects compilation (e.g. class whitelist/blacklist settings). */ .add(attr(OPTIONS_FILE_ATTR, LABEL).legacyAllowAnyFileType().singleArtifact().cfg(HOST)) /* If true, output C++ rather than ObjC. */ .add(attr(OUTPUT_CPP_ATTR, BOOLEAN).value(false)) /* If true, output headers with .pbobjc.h, rather than .pb.h. */ .add(attr(PER_PROTO_INCLUDES, BOOLEAN).value(false)) /* If true, always add all directories to objc_library includes, */ .add(attr(COMPILE_PROTOS_ATTR, LABEL) .allowedFileTypes(FileType.of(".py")) .cfg(HOST) .singleArtifact() .value(env.getToolsLabel("//tools/objc:compile_protos"))) .add(attr(PROTO_SUPPORT_ATTR, LABEL) .legacyAllowAnyFileType() .cfg(HOST) .value(env.getToolsLabel("//tools/objc:proto_support"))) .add(attr(USE_OBJC_HEADER_NAMES_ATTR, BOOLEAN).value(false)) .add(attr(LIBPROTOBUF_ATTR, LABEL).allowedRuleClasses("objc_library") .value(new ComputedDefault(OUTPUT_CPP_ATTR) { @Override public Object getDefault(AttributeMap rule) { return rule.get(OUTPUT_CPP_ATTR, Type.BOOLEAN) ? env.getLabel("//external:objc_proto_cpp_lib") : env.getLabel("//external:objc_proto_lib"); } })) .add(attr("$xcodegen", LABEL).cfg(HOST).exec() .value(env.getToolsLabel("//tools/objc:xcodegen"))) .build(); } @Override public Metadata getMetadata() { return RuleDefinition.Metadata.builder() .name("objc_proto_library") .factoryClass(ObjcProtoLibrary.class) .ancestors(BaseRuleClasses.RuleBase.class, ObjcRuleClasses.XcrunRule.class) .build(); } } /*
This rule produces a static library from the given proto_library dependencies, after applying an options file.
*/