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// 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.java.proto;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.rules.SkylarkRuleContext;
import com.google.devtools.build.lib.rules.proto.ProtoCompileActionBuilder;
import com.google.devtools.build.lib.rules.proto.ProtoLangToolchainProvider;
import com.google.devtools.build.lib.rules.proto.ProtoSupportDataProvider;
import com.google.devtools.build.lib.rules.proto.SupportData;
import com.google.devtools.build.lib.skylarkinterface.Param;
import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable;
import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
/**
* A class that exposes Java common methods for proto compilation.
*/
@SkylarkModule(name = "java_proto_common", doc = "Helper class for Java proto compilation.")
public class JavaProtoSkylarkCommon {
@SkylarkCallable(
name = "create_java_lite_proto_compile_action",
// This function is experimental for now.
documented = false,
// There's 2 mandatory positional arguments, the Skylark context and the ConfiguredTarget.
mandatoryPositionals = 2,
parameters = {
@Param(
name = "src_jar",
positional = false,
named = true,
type = Artifact.class
),
@Param(
name = "proto_toolchain_attr",
positional = false,
named = true,
type = String.class
)
}
)
public static void createProtoCompileAction(
SkylarkRuleContext skylarkRuleContext,
ConfiguredTarget target,
Artifact sourceJar,
String protoToolchainAttr) {
SupportData supportData =
checkNotNull(target.getProvider(ProtoSupportDataProvider.class).getSupportData());
ProtoCompileActionBuilder.registerActions(
skylarkRuleContext.getRuleContext(),
ImmutableList.of(
new ProtoCompileActionBuilder.ToolchainInvocation(
"javalite",
getProtoToolchainProvider(skylarkRuleContext, protoToolchainAttr),
sourceJar.getExecPathString())),
supportData.getDirectProtoSources(),
supportData.getTransitiveImports(),
supportData.getProtosInDirectDeps(),
skylarkRuleContext.getLabel().getCanonicalForm(),
ImmutableList.of(sourceJar),
"JavaLite",
true /* allowServices */);
}
private static ProtoLangToolchainProvider getProtoToolchainProvider(
SkylarkRuleContext skylarkRuleContext, String protoToolchainAttr) {
ConfiguredTarget javaliteToolchain = (ConfiguredTarget) checkNotNull(
skylarkRuleContext.getAttr().getValue(protoToolchainAttr));
return checkNotNull(javaliteToolchain.getProvider(ProtoLangToolchainProvider.class));
}
}
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