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// Copyright 2023 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 build_flags
import (
"strings"
"android/soong/android"
"github.com/google/blueprint"
)
type BuildFlagDeclarationsProviderData struct {
IntermediateCacheOutputPath android.WritablePath
IntermediateDumpOutputPath android.WritablePath
}
var BuildFlagDeclarationsProviderKey = blueprint.NewProvider[BuildFlagDeclarationsProviderData]()
type DeclarationsModule struct {
android.ModuleBase
android.DefaultableModuleBase
// Properties for "aconfig_declarations"
properties struct {
// build flag declaration files, relative to this Android.bp file
Srcs []string `android:"path"`
}
}
func DeclarationsFactory() android.Module {
module := &DeclarationsModule{}
android.InitAndroidModule(module)
android.InitDefaultableModule(module)
module.AddProperties(&module.properties)
return module
}
func joinAndPrefix(prefix string, values []string) string {
var sb strings.Builder
for _, v := range values {
sb.WriteString(prefix)
sb.WriteString(v)
}
return sb.String()
}
func optionalVariable(prefix string, value string) string {
var sb strings.Builder
if value != "" {
sb.WriteString(prefix)
sb.WriteString(value)
}
return sb.String()
}
func (module *DeclarationsModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
// Intermediate format
declarationFiles := android.PathsForModuleSrc(ctx, module.properties.Srcs)
intermediateCacheFilePath := android.PathForModuleOut(ctx, "build_flag_intermediate.pb")
inputFiles := make([]android.Path, len(declarationFiles))
copy(inputFiles, declarationFiles)
// TODO(lamont): generate the rc_proto.FlagArtifacts message for the sources.
args := map[string]string{
"release_version": ctx.Config().ReleaseVersion(),
"declarations": android.JoinPathsWithPrefix(declarationFiles, "--decl "),
}
ctx.Build(pctx, android.BuildParams{
Rule: buildFlagRule,
Output: intermediateCacheFilePath,
Inputs: inputFiles,
Description: "build_flag_declarations",
Args: args,
})
intermediateDumpFilePath := android.PathForModuleOut(ctx, "build_flag_intermediate.textproto")
ctx.Build(pctx, android.BuildParams{
Rule: buildFlagTextRule,
Output: intermediateDumpFilePath,
Input: intermediateCacheFilePath,
Description: "build_flag_declarations_text",
})
android.SetProvider(ctx, BuildFlagDeclarationsProviderKey, BuildFlagDeclarationsProviderData{
IntermediateCacheOutputPath: intermediateCacheFilePath,
IntermediateDumpOutputPath: intermediateDumpFilePath,
})
}
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