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295 lines
9.0 KiB
295 lines
9.0 KiB
// Copyright (C) 2021 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package aidl
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import (
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"android/soong/android"
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"android/soong/genrule"
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"path/filepath"
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"strings"
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"github.com/google/blueprint"
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"github.com/google/blueprint/pathtools"
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"github.com/google/blueprint/proptools"
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)
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var (
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aidlDirPrepareRule = pctx.StaticRule("aidlDirPrepareRule", blueprint.RuleParams{
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Command: `rm -rf "${outDir}" && mkdir -p "${outDir}" && ` +
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`touch ${out} # ${in}`,
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Description: "create ${out}",
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}, "outDir")
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aidlCppRule = pctx.StaticRule("aidlCppRule", blueprint.RuleParams{
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Command: `mkdir -p "${headerDir}" && ` +
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`${aidlCmd} --lang=${lang} ${optionalFlags} --structured --ninja -d ${out}.d ` +
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`-h ${headerDir} -o ${outDir} ${imports} ${in}`,
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Depfile: "${out}.d",
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Deps: blueprint.DepsGCC,
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CommandDeps: []string{"${aidlCmd}"},
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Description: "AIDL ${lang} ${in}",
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}, "imports", "lang", "headerDir", "outDir", "optionalFlags")
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aidlJavaRule = pctx.StaticRule("aidlJavaRule", blueprint.RuleParams{
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Command: `${aidlCmd} --lang=java ${optionalFlags} --structured --ninja -d ${out}.d ` +
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`-o ${outDir} ${imports} ${in}`,
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Depfile: "${out}.d",
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Deps: blueprint.DepsGCC,
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CommandDeps: []string{"${aidlCmd}"},
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Description: "AIDL Java ${in}",
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}, "imports", "outDir", "optionalFlags")
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aidlRustRule = pctx.StaticRule("aidlRustRule", blueprint.RuleParams{
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Command: `${aidlCmd} --lang=rust ${optionalFlags} --structured --ninja -d ${out}.d ` +
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`-o ${outDir} ${imports} ${in}`,
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Depfile: "${out}.d",
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Deps: blueprint.DepsGCC,
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CommandDeps: []string{"${aidlCmd}"},
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Description: "AIDL Rust ${in}",
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}, "imports", "outDir", "optionalFlags")
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)
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type aidlGenProperties struct {
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Srcs []string `android:"path"`
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AidlRoot string // base directory for the input aidl file
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IsToT bool
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ImportsWithoutVersion []string
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Stability *string
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Lang string // target language [java|cpp|ndk|rust]
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BaseName string
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GenLog bool
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Version string
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GenTrace bool
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Unstable *bool
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Visibility []string
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Flags []string
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}
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type aidlGenRule struct {
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android.ModuleBase
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properties aidlGenProperties
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implicitInputs android.Paths
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importFlags string
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// TODO(b/149952131): always have a hash file
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hashFile android.Path
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genOutDir android.ModuleGenPath
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genHeaderDir android.ModuleGenPath
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genHeaderDeps android.Paths
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genOutputs android.WritablePaths
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}
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var _ android.SourceFileProducer = (*aidlGenRule)(nil)
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var _ genrule.SourceFileGenerator = (*aidlGenRule)(nil)
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func (g *aidlGenRule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
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srcs, imports := getPaths(ctx, g.properties.Srcs, g.properties.AidlRoot)
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if ctx.Failed() {
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return
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}
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genDirTimestamp := android.PathForModuleGen(ctx, "timestamp") // $out/gen/timestamp
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g.implicitInputs = append(g.implicitInputs, genDirTimestamp)
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importPaths, implicits := getImportsFromDeps(ctx, g.properties.IsToT)
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imports = append(imports, importPaths...)
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g.importFlags = strings.Join(wrap("-I", imports, ""), " ")
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g.genOutDir = android.PathForModuleGen(ctx)
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g.genHeaderDir = android.PathForModuleGen(ctx, "include")
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for _, src := range srcs {
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outFile, headers := g.generateBuildActionsForSingleAidl(ctx, src)
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g.genOutputs = append(g.genOutputs, outFile)
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g.genHeaderDeps = append(g.genHeaderDeps, headers...)
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}
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// This is to clean genOutDir before generating any file
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ctx.Build(pctx, android.BuildParams{
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Rule: aidlDirPrepareRule,
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Implicits: implicits,
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Inputs: srcs,
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Output: genDirTimestamp,
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Args: map[string]string{
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"outDir": g.genOutDir.String(),
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},
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})
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// This is to trigger genrule alone
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ctx.Build(pctx, android.BuildParams{
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Rule: android.Phony,
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Output: android.PathForModuleOut(ctx, "timestamp"), // $out/timestamp
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Inputs: g.genOutputs.Paths(),
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})
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}
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func (g *aidlGenRule) generateBuildActionsForSingleAidl(ctx android.ModuleContext, src android.Path) (android.WritablePath, android.Paths) {
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baseDir := getBaseDir(ctx, src, android.PathForModuleSrc(ctx, g.properties.AidlRoot))
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var ext string
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if g.properties.Lang == langJava {
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ext = "java"
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} else if g.properties.Lang == langRust {
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ext = "rs"
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} else {
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ext = "cpp"
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}
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relPath, _ := filepath.Rel(baseDir, src.String())
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outFile := android.PathForModuleGen(ctx, pathtools.ReplaceExtension(relPath, ext))
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implicits := g.implicitInputs
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optionalFlags := append([]string{}, g.properties.Flags...)
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if g.properties.Version != "" {
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optionalFlags = append(optionalFlags, "--version "+g.properties.Version)
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hash := "notfrozen"
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if !strings.HasPrefix(baseDir, ctx.Config().BuildDir()) {
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hashFile := android.ExistentPathForSource(ctx, baseDir, ".hash")
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if hashFile.Valid() {
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hash = "$$(read -r <" + hashFile.Path().String() + " hash extra; printf '%s' \"$$hash\")"
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implicits = append(implicits, hashFile.Path())
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g.hashFile = hashFile.Path()
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}
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}
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optionalFlags = append(optionalFlags, "--hash "+hash)
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}
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if g.properties.GenTrace {
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optionalFlags = append(optionalFlags, "-t")
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}
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if g.properties.Stability != nil {
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optionalFlags = append(optionalFlags, "--stability", *g.properties.Stability)
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}
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var headers android.WritablePaths
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if g.properties.Lang == langJava {
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ctx.Build(pctx, android.BuildParams{
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Rule: aidlJavaRule,
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Input: src,
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Implicits: implicits,
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Output: outFile,
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Args: map[string]string{
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"imports": g.importFlags,
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"outDir": g.genOutDir.String(),
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"optionalFlags": strings.Join(optionalFlags, " "),
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},
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})
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} else if g.properties.Lang == langRust {
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ctx.Build(pctx, android.BuildParams{
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Rule: aidlRustRule,
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Input: src,
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Implicits: implicits,
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Output: outFile,
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Args: map[string]string{
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"imports": g.importFlags,
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"outDir": g.genOutDir.String(),
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"optionalFlags": strings.Join(optionalFlags, " "),
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},
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})
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} else {
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typeName := strings.TrimSuffix(filepath.Base(relPath), ".aidl")
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packagePath := filepath.Dir(relPath)
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baseName := typeName
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// TODO(b/111362593): aidl_to_cpp_common.cpp uses heuristics to figure out if
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// an interface name has a leading I. Those same heuristics have been
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// moved here.
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if len(baseName) >= 2 && baseName[0] == 'I' &&
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strings.ToUpper(baseName)[1] == baseName[1] {
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baseName = strings.TrimPrefix(typeName, "I")
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}
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prefix := ""
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if g.properties.Lang == langNdk || g.properties.Lang == langNdkPlatform {
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prefix = "aidl"
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}
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headers = append(headers, g.genHeaderDir.Join(ctx, prefix, packagePath,
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typeName+".h"))
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headers = append(headers, g.genHeaderDir.Join(ctx, prefix, packagePath,
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"Bp"+baseName+".h"))
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headers = append(headers, g.genHeaderDir.Join(ctx, prefix, packagePath,
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"Bn"+baseName+".h"))
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if g.properties.GenLog {
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optionalFlags = append(optionalFlags, "--log")
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}
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aidlLang := g.properties.Lang
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if aidlLang == langNdkPlatform {
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aidlLang = "ndk"
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}
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ctx.Build(pctx, android.BuildParams{
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Rule: aidlCppRule,
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Input: src,
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Implicits: implicits,
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Output: outFile,
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ImplicitOutputs: headers,
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Args: map[string]string{
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"imports": g.importFlags,
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"lang": aidlLang,
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"headerDir": g.genHeaderDir.String(),
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"outDir": g.genOutDir.String(),
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"optionalFlags": strings.Join(optionalFlags, " "),
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},
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})
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}
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return outFile, headers.Paths()
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}
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func (g *aidlGenRule) GeneratedSourceFiles() android.Paths {
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return g.genOutputs.Paths()
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}
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func (g *aidlGenRule) Srcs() android.Paths {
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return g.genOutputs.Paths()
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}
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func (g *aidlGenRule) GeneratedDeps() android.Paths {
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return g.genHeaderDeps
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}
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func (g *aidlGenRule) GeneratedHeaderDirs() android.Paths {
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return android.Paths{g.genHeaderDir}
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}
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func (g *aidlGenRule) DepsMutator(ctx android.BottomUpMutatorContext) {
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// original interface
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ctx.AddDependency(ctx.Module(), interfaceDep, g.properties.BaseName+aidlInterfaceSuffix)
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if !proptools.Bool(g.properties.Unstable) {
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// for checkapi timestamps
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ctx.AddDependency(ctx.Module(), apiDep, g.properties.BaseName+aidlApiSuffix)
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}
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// imported interfaces
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ctx.AddDependency(ctx.Module(), importInterfaceDep, wrap("", g.properties.ImportsWithoutVersion, aidlInterfaceSuffix)...)
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ctx.AddReverseDependency(ctx.Module(), nil, aidlMetadataSingletonName)
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}
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func aidlGenFactory() android.Module {
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g := &aidlGenRule{}
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g.AddProperties(&g.properties)
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android.InitAndroidModule(g)
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return g
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}
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