| // 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.cpp.proto; |
| |
| import static com.google.devtools.build.lib.packages.Attribute.attr; |
| import static com.google.devtools.build.lib.packages.BuildType.LABEL_LIST; |
| |
| 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.cpp.CppConfiguration; |
| |
| /** Declaration part of cc_proto_library. */ |
| public class CcProtoLibraryRule implements RuleDefinition { |
| |
| private final CcProtoAspect ccProtoAspect; |
| |
| public CcProtoLibraryRule(CcProtoAspect ccProtoAspect) { |
| this.ccProtoAspect = ccProtoAspect; |
| } |
| |
| @Override |
| public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment environment) { |
| return builder |
| .requiresConfigurationFragments(CppConfiguration.class) |
| /* <!-- #BLAZE_RULE(cc_proto_library).ATTRIBUTE(deps) --> |
| The list of <a href="protocol-buffer.html#proto_library"><code>proto_library</code></a> |
| rules to generate C++ code for. |
| <!-- #END_BLAZE_RULE.ATTRIBUTE --> */ |
| .override( |
| attr("deps", LABEL_LIST) |
| .allowedRuleClasses("proto_library") |
| .allowedFileTypes() |
| .aspect(ccProtoAspect)) |
| .build(); |
| } |
| |
| @Override |
| public Metadata getMetadata() { |
| return RuleDefinition.Metadata.builder() |
| .name("cc_proto_library") |
| .factoryClass(CcProtoLibrary.class) |
| .ancestors(BaseRuleClasses.RuleBase.class) |
| .build(); |
| } |
| } |
| |
| /*<!-- #BLAZE_RULE (NAME = cc_proto_library, TYPE = LIBRARY, FAMILY = C / C++) --> |
| |
| <p> |
| <code>cc_proto_library</code> generates C++ code from <code>.proto</code> files. |
| </p> |
| |
| <p> |
| <code>deps</code> must point to <a href="protocol-buffer.html#proto_library"><code>proto_library |
| </code></a> rules. |
| </p> |
| |
| <p> |
| Example: |
| </p> |
| |
| <pre class="code"> |
| cc_library( |
| name = "lib", |
| deps = [":foo_cc_proto"], |
| ) |
| |
| cc_proto_library( |
| name = "foo_cc_proto", |
| deps = [":foo_proto"], |
| ) |
| |
| proto_library( |
| name = "foo_proto", |
| ) |
| </pre> |
| |
| |
| <!-- #END_BLAZE_RULE -->*/ |