platform_build_soong/android/filegroup.go
Jingwen Chen 32b4ece0c3 bp2build: automatically convert all filegroups.
See build_conversion_test.go for expected outputs.

Test: build_conversion_test.go
Test: GENERATE_BAZEL_FILES=true m nothing &&
./build/bazel/scripts/bp2build-sync.sh write && bazel build
//bionic/libc/tools/...
Test: bazel query //... --config=queryview

Change-Id: I3c54b96c0812f1ea4ab2c95da1bff3d7c5cc4006
2021-01-23 02:26:20 -05:00

120 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"
"github.com/google/blueprint/proptools"
)
func init() {
RegisterModuleType("filegroup", FileGroupFactory)
RegisterBp2BuildMutator("filegroup", bp2buildMutator)
}
// https://docs.bazel.build/versions/master/be/general.html#filegroup
type bazelFilegroupAttributes struct {
Name *string
Srcs []string
}
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) {}
// TODO: Create helper functions to avoid this boilerplate.
func bp2buildMutator(ctx TopDownMutatorContext) {
if m, ok := ctx.Module().(*fileGroup); ok {
name := "__bp2build__" + m.base().BaseModuleName()
ctx.CreateModule(BazelFileGroupFactory, &bazelFilegroupAttributes{
Name: proptools.StringPtr(name),
Srcs: m.properties.Srcs,
}, &bazel.BazelTargetModuleProperties{
Rule_class: "filegroup",
})
}
}
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(), " "))
}
}