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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
ret.kytheFile = TransformSrcToObject(ctx, crateRootPath, deps, flags, outputFile).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
}
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