platform_build_soong/android/filegroup.go
Jingwen Chen 77e8b7b6d2 bp2build: add bazel_module: { bp2build_available } prop.
This CL adds a per-target allowlist to instruct bp2build on which modules it should generate Bazel targets for.

Test: soong tests
Change-Id: I869e66fce405c2c6689b381569b8cc0118cbcf76
2021-02-05 09:26:22 -05:00

124 lines
3.5 KiB
Go

// Copyright 2016 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 android
import (
"android/soong/bazel"
"strings"
)
func init() {
RegisterModuleType("filegroup", FileGroupFactory)
RegisterBp2BuildMutator("filegroup", FilegroupBp2Build)
}
// https://docs.bazel.build/versions/master/be/general.html#filegroup
type bazelFilegroupAttributes struct {
Srcs bazel.LabelList
}
type bazelFilegroup struct {
BazelTargetModuleBase
bazelFilegroupAttributes
}
func BazelFileGroupFactory() Module {
module := &bazelFilegroup{}
module.AddProperties(&module.bazelFilegroupAttributes)
InitBazelTargetModule(module)
return module
}
func (bfg *bazelFilegroup) Name() string {
return bfg.BaseModuleName()
}
func (bfg *bazelFilegroup) GenerateAndroidBuildActions(ctx ModuleContext) {}
func FilegroupBp2Build(ctx TopDownMutatorContext) {
fg, ok := ctx.Module().(*fileGroup)
if !ok || !fg.properties.Bazel_module.Bp2build_available {
return
}
attrs := &bazelFilegroupAttributes{
Srcs: BazelLabelForModuleSrcExcludes(ctx, fg.properties.Srcs, fg.properties.Exclude_srcs),
}
// Can we automate this?
name := "__bp2build__" + fg.Name()
props := bazel.BazelTargetModuleProperties{
Name: &name,
Rule_class: "filegroup",
}
ctx.CreateBazelTargetModule(BazelFileGroupFactory, props, attrs)
}
type fileGroupProperties struct {
// srcs lists files that will be included in this filegroup
Srcs []string `android:"path"`
Exclude_srcs []string `android:"path"`
// The base path to the files. May be used by other modules to determine which portion
// of the path to use. For example, when a filegroup is used as data in a cc_test rule,
// the base path is stripped off the path and the remaining path is used as the
// installation directory.
Path *string
// Create a make variable with the specified name that contains the list of files in the
// filegroup, relative to the root of the source tree.
Export_to_make_var *string
// Properties for Bazel migration purposes.
bazel.Properties
}
type fileGroup struct {
ModuleBase
properties fileGroupProperties
srcs Paths
}
var _ SourceFileProducer = (*fileGroup)(nil)
// filegroup contains a list of files that are referenced by other modules
// properties (such as "srcs") using the syntax ":<name>". filegroup are
// also be used to export files across package boundaries.
func FileGroupFactory() Module {
module := &fileGroup{}
module.AddProperties(&module.properties)
InitAndroidModule(module)
return module
}
func (fg *fileGroup) GenerateAndroidBuildActions(ctx ModuleContext) {
fg.srcs = PathsForModuleSrcExcludes(ctx, fg.properties.Srcs, fg.properties.Exclude_srcs)
if fg.properties.Path != nil {
fg.srcs = PathsWithModuleSrcSubDir(ctx, fg.srcs, String(fg.properties.Path))
}
}
func (fg *fileGroup) Srcs() Paths {
return append(Paths{}, fg.srcs...)
}
func (fg *fileGroup) MakeVars(ctx MakeVarsModuleContext) {
if makeVar := String(fg.properties.Export_to_make_var); makeVar != "" {
ctx.StrictRaw(makeVar, strings.Join(fg.srcs.Strings(), " "))
}
}