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path: root/genrule/filegroup.go
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// 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 genrule

import (
	"github.com/google/blueprint"

	"android/soong/android"
)

func init() {
	android.RegisterModuleType("filegroup", fileGroupFactory)
}

type fileGroupProperties struct {
	// srcs lists files that will be included in this filegroup
	Srcs []string

	Exclude_srcs []string
}

type fileGroup struct {
	android.ModuleBase
	properties fileGroupProperties
	srcs       android.Paths
}

var _ android.SourceFileProducer = (*fileGroup)(nil)

// filegroup modules contain a list of files, and can be used to export files across package
// boundaries.  filegroups (and genrules) can be referenced from srcs properties of other modules
// using the syntax ":module".
func fileGroupFactory() (blueprint.Module, []interface{}) {
	module := &fileGroup{}

	return android.InitAndroidModule(module, &module.properties)
}

func (fg *fileGroup) DepsMutator(ctx android.BottomUpMutatorContext) {
	android.ExtractSourcesDeps(ctx, fg.properties.Srcs)
}

func (fg *fileGroup) GenerateAndroidBuildActions(ctx android.ModuleContext) {
	fg.srcs = ctx.ExpandSources(fg.properties.Srcs, fg.properties.Exclude_srcs)
}

func (fg *fileGroup) Srcs() android.Paths {
	return fg.srcs
}