platform_build_soong/java/plugin.go
Sam Delmerico c016143602 emulate java_library static_deps with Bazel exports
In Soong, java_library can specify static_deps which are dependencies
that get aggregated into the final jar (akin to static linking). This is
useful because it allows dependencies higher up in the chain to compile
against the APIs exported by transitive dependencies. Bazel does not
support this functionality directly, but it can be emulated via the
exports attribute which makes any targets listed in the attribute public
to targets further up the chain.

Bug: 217236083
Bug: 219908977
Test: b build //external/error_prone:error_prone_core
Test: b build //external/bouncycastle:bouncycastle-host
Test: b build --platforms=//build/bazel/platforms:linux_x86
  //prebuilts/sdk/tools/jetifier/jetifier-standalone:jetifier
Change-Id: I2867e3f816de720a6f4bd9ff7a847d1b0c2da2d6
2022-03-30 18:58:38 +00:00

89 lines
2.6 KiB
Go

// Copyright 2019 Google Inc. 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 java
import (
"android/soong/android"
"android/soong/bazel"
)
func init() {
registerJavaPluginBuildComponents(android.InitRegistrationContext)
}
func registerJavaPluginBuildComponents(ctx android.RegistrationContext) {
ctx.RegisterModuleType("java_plugin", PluginFactory)
}
func PluginFactory() android.Module {
module := &Plugin{}
module.addHostProperties()
module.AddProperties(&module.pluginProperties)
InitJavaModule(module, android.HostSupported)
android.InitBazelModule(module)
return module
}
// Plugin describes a java_plugin module, a host java library that will be used by javac as an annotation processor.
type Plugin struct {
Library
pluginProperties PluginProperties
}
type PluginProperties struct {
// The optional name of the class that javac will use to run the annotation processor.
Processor_class *string
// If true, assume the annotation processor will generate classes that are referenced from outside the module.
// This necessitates disabling the turbine optimization on modules that use this plugin, which will reduce
// parallelism and cause more recompilation for modules that depend on modules that use this plugin.
Generates_api *bool
}
type pluginAttributes struct {
*javaCommonAttributes
Deps bazel.LabelListAttribute
Processor_class *string
}
// ConvertWithBp2build is used to convert android_app to Bazel.
func (p *Plugin) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
pluginName := p.Name()
commonAttrs, depLabels := p.convertLibraryAttrsBp2Build(ctx)
deps := depLabels.Deps
deps.Append(depLabels.StaticDeps)
var processorClass *string
if p.pluginProperties.Processor_class != nil {
processorClass = p.pluginProperties.Processor_class
}
attrs := &pluginAttributes{
javaCommonAttributes: commonAttrs,
Deps: deps,
Processor_class: processorClass,
}
props := bazel.BazelTargetModuleProperties{
Rule_class: "java_plugin",
}
ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: pluginName}, attrs)
}