// 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;
/** 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
/*
The list of proto_library
rules to generate C++ code for.
*/
.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();
}
}
/*
cc_proto_library
generates C++ code from .proto
files.
deps
must point to proto_library
rules.
Example:
cc_library( name = "lib", deps = [":foo_cc_proto"], ) cc_proto_library( name = "foo_cc_proto", deps = [":foo_proto"], ) proto_library( name = "foo_proto", )*/