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// Copyright
2025 The Android
Open Source Project
//
// 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 rust
import (
"android/soong/android"
)
func init() {
// Rust objects are
object files built with --emit=obj.
android.RegisterModuleType(
"rust_object", RustObjectFactory)
android.RegisterModuleType(
"rust_object_host", RustObjectHostFactory)
}
type ObjectProperties struct {
// Indicates that this
module is a CRT
object. CRT objects will be
split
//
into a variant per-API level
between min_sdk_version
and current.
Crt
*bool
}
type objectDecorator struct {
*baseCompiler
Properties ObjectProperties
}
type objectInterface
interface {
crt() bool
}
var _ objectInterface = (
*objectDecorator)(nil)
var _ compiler = (
*objectDecorator)(nil)
// rust_object produces an
object file.
func RustObjectFactory() android.
Module {
module, _ := NewRustObject(android.HostAndDeviceSupported)
return
module.Init()
}
// rust_object_host produces an
object file for host only.
func RustObjectHostFactory() android.
Module {
module, _ := NewRustObject(android.HostSupported)
return
module.Init()
}
func NewRustObject(hod android.HostOrDeviceSupported) (
*Module, *objectDecorator) {
module := newModule(hod, android.MultilibFirst)
object := &objectDecorator{
baseCompiler: NewBaseCompiler(
"",
"", NoInstall),
}
module.compiler =
object
return
module,
object
}
func (
object *objectDecorator) begin(ctx BaseModuleContext) {
object.baseCompiler.
begin(ctx)
}
func (
object *objectDecorator) compilerFlags(ctx ModuleContext, flags Flags) Flags {
flags =
object.baseCompiler.compilerFlags(ctx, flags)
return flags
}
func (
object *objectDecorator) compilerDeps(ctx DepsContext, deps Deps) Deps {
deps =
object.baseCompiler.compilerDeps(ctx, deps)
return deps
}
func (
object *objectDecorator) crt() bool {
return Bool(
object.Properties.Crt)
}
func (
object *objectDecorator) compilerProps() []interface{} {
return
append(
object.baseCompiler.compilerProps(),
&
object.Properties)
}
func (
object *objectDecorator) nativeCoverage() bool {
return true
}
func (
object *objectDecorator) emitType() string {
return
"obj"
}
func (
object *objectDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) buildOutput {
fileName :=
object.getStem(ctx) +
".o"
outputFile := android.PathForModuleOut(ctx, fileName)
ret := buildOutput{outputFile: outputFile}
crateRootPath :=
object.crateRootPath(ctx)
flags.RustFlags =
append(flags.RustFlags, deps.depFlags...)
object.baseCompiler.unstrippedOutputFile = outputFile
checkJsonFile := android.PathForModuleOut(ctx, outputFile.Base()+
".checkJson")
object.checkJsonFile = android.OptionalPathForPath(checkJsonFile)
ret.kytheFile = TransformSrcToObject(ctx, crateRootPath, deps, flags, outputFile, check
JsonFile).kytheFile
return ret
}
func (object *objectDecorator) autoDep(ctx android.BottomUpMutatorContext) autoDep {
// rust_objects are not linked so selecting deps for them doesn't make sense.
panic("rust_objects should not declare rustlibs dependencies")
}
func (object *objectDecorator) install(ctx ModuleContext) {
// Objects aren't installable, so do nothing.
}
func (object *objectDecorator) everInstallable() bool {
// Objects aren't installable.
return false
}