| // Copyright 2015 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.objc; |
| |
| 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.RuleClass; |
| import com.google.devtools.build.lib.rules.objc.J2ObjcLibraryBaseRule; |
| import com.google.devtools.build.lib.rules.objc.ObjcRuleClasses; |
| |
| /** <code>j2objc_library</code> rule declaration. */ |
| public class BazelJ2ObjcLibraryRule implements RuleDefinition { |
| @Override |
| public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env) { |
| return builder.build(); |
| } |
| |
| @Override |
| public Metadata getMetadata() { |
| return RuleDefinition.Metadata.builder() |
| .name("j2objc_library") |
| .factoryClass(BaseRuleClasses.EmptyRuleConfiguredTargetFactory.class) |
| .ancestors(J2ObjcLibraryBaseRule.class, ObjcRuleClasses.CrosstoolRule.class) |
| .build(); |
| } |
| } |
| |
| /*<!-- #BLAZE_RULE (NAME = j2objc_library, TYPE = LIBRARY, FAMILY = Objective-C) --> |
| |
| <p> This rule uses <a href="https://github.com/google/j2objc">J2ObjC</a> to translate Java source |
| files to Objective-C, which then can be used used as dependencies of objc_library and objc_binary |
| rules. Detailed information about J2ObjC itself can be found at <a href="http://j2objc.org">the |
| J2ObjC site</a> |
| </p> |
| <p>Custom J2ObjC transpilation flags can be specified using the build flag |
| <code>--j2objc_translation_flags</code> in the command line. |
| </p> |
| <p>Please note that the translated files included in a j2objc_library target will be |
| compiled using the default compilation configuration, the same configuration as for the sources of |
| an objc_library rule with no compilation options specified in attributes. |
| </p> |
| <p>Plus, generated code is de-duplicated at target level, not source level. If you have two |
| different Java targets that include the same Java source files, you may see a duplicate symbol error |
| at link time. The correct way to resolve this issue is to move the shared Java source files into a |
| separate common target that can be depended upon. |
| </p> |
| |
| |
| <!-- #END_BLAZE_RULE -->*/ |