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// 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 multitree
import (
"android/soong/android"
"fmt"
"github.com/google/blueprint"
)
var (
pctx = android.NewPackageContext("android/soong/multitree")
)
func init() {
RegisterApiSurfaceBuildComponents(android.InitRegistrationContext)
}
var PrepareForTestWithApiSurface = android.FixtureRegisterWithContext(RegisterApiSurfaceBuildComponents)
func RegisterApiSurfaceBuildComponents(ctx android.RegistrationContext) {
ctx.RegisterModuleType("api_surface", ApiSurfaceFactory)
}
type ApiSurface struct {
android.ModuleBase
ExportableModuleBase
properties apiSurfaceProperties
allOutputs android.Paths
taggedOutputs map[string]android.Paths
}
type apiSurfaceProperties struct {
Contributions []string
}
func ApiSurfaceFactory() android.Module {
module := &ApiSurface{}
module.AddProperties(&module.properties)
android.InitAndroidModule(module)
InitExportableModule(module)
return module
}
func (surface *ApiSurface) DepsMutator(ctx android.BottomUpMutatorContext) {
if surface.properties.Contributions != nil {
ctx.AddVariationDependencies(nil, nil, surface.properties.Contributions...)
}
}
func (surface *ApiSurface) GenerateAndroidBuildActions(ctx android.ModuleContext) {
contributionFiles := make(map[string]android.Paths)
var allOutputs android.Paths
ctx.WalkDeps(func(child, parent android.Module) bool {
if contribution, ok := child.(ApiContribution); ok {
copied := contribution.CopyFilesWithTag(ctx)
for tag, files := range copied {
contributionFiles[child.Name()+"#"+tag] = files
}
for _, paths := range copied {
allOutputs = append(allOutputs, paths...)
}
return false // no transitive dependencies
}
return false
})
// phony target
ctx.Build(pctx, android.BuildParams{
Rule: blueprint.Phony,
Output: android.PathForPhony(ctx, ctx.ModuleName()),
Inputs: allOutputs,
})
surface.allOutputs = allOutputs
surface.taggedOutputs = contributionFiles
}
func (surface *ApiSurface) OutputFiles(tag string) (android.Paths, error) {
if tag != "" {
return nil, fmt.Errorf("unknown tag: %q", tag)
}
return surface.allOutputs, nil
}
func (surface *ApiSurface) TaggedOutputs() map[string]android.Paths {
return surface.taggedOutputs
}
func (surface *ApiSurface) Exportable() bool {
return true
}
var _ android.OutputFileProducer = (*ApiSurface)(nil)
var _ Exportable = (*ApiSurface)(nil)
type ApiContribution interface {
// copy files necessaryt to construct an API surface
// For C, it will be map.txt and .h files
// For Java, it will be api.txt
CopyFilesWithTag(ctx android.ModuleContext) map[string]android.Paths // output paths
// Generate Android.bp in out/ to use the exported .txt files
// GenerateBuildFiles(ctx ModuleContext) Paths //output paths
}
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