java/platform_bootclasspath.go

// Copyright 2021 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/dexpreopt"
)

func init() {
	registerPlatformBootclasspathBuildComponents(android.InitRegistrationContext)
}

func registerPlatformBootclasspathBuildComponents(ctx android.RegistrationContext) {
	ctx.RegisterModuleType("platform_bootclasspath", platformBootclasspathFactory)
}

type platformBootclasspathModule struct {
	android.ModuleBase
}

func platformBootclasspathFactory() android.Module {
	m := &platformBootclasspathModule{}
	android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
	return m
}

func (b *platformBootclasspathModule) DepsMutator(ctx android.BottomUpMutatorContext) {
	if SkipDexpreoptBootJars(ctx) {
		return
	}

	// Add a dependency onto the dex2oat tool which is needed for creating the boot image. The
	// path is retrieved from the dependency by GetGlobalSoongConfig(ctx).
	dexpreopt.RegisterToolDeps(ctx)
}

func (b *platformBootclasspathModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
	// Nothing to do if skipping the dexpreopt of boot image jars.
	if SkipDexpreoptBootJars(ctx) {
		return
	}

	// Force the GlobalSoongConfig to be created and cached for use by the dex_bootjars
	// GenerateSingletonBuildActions method as it cannot create it for itself.
	dexpreopt.GetGlobalSoongConfig(ctx)

	imageConfig := b.getImageConfig(ctx)
	if imageConfig == nil {
		return
	}

	// Construct the boot image info from the config.
	info := BootImageInfo{imageConfig: imageConfig}

	// Make it available for other modules.
	ctx.SetProvider(BootImageInfoProvider, info)
}

func (b *platformBootclasspathModule) getImageConfig(ctx android.EarlyModuleContext) *bootImageConfig {
	return defaultBootImageConfig(ctx)
}