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- // Copyright 2019 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() {
- android.RegisterModuleType("rust_proc_macro", ProcMacroFactory)
- }
- type ProcMacroCompilerProperties struct {
- }
- type procMacroDecorator struct {
- *baseCompiler
- *flagExporter
- Properties ProcMacroCompilerProperties
- }
- type procMacroInterface interface {
- ProcMacro() bool
- }
- var _ compiler = (*procMacroDecorator)(nil)
- var _ exportedFlagsProducer = (*procMacroDecorator)(nil)
- func ProcMacroFactory() android.Module {
- module, _ := NewProcMacro(android.HostSupportedNoCross)
- return module.Init()
- }
- func NewProcMacro(hod android.HostOrDeviceSupported) (*Module, *procMacroDecorator) {
- module := newModule(hod, android.MultilibFirst)
- procMacro := &procMacroDecorator{
- baseCompiler: NewBaseCompiler("lib", "lib64", InstallInSystem),
- flagExporter: NewFlagExporter(),
- }
- // Don't sanitize procMacros
- module.sanitize = nil
- module.compiler = procMacro
- return module, procMacro
- }
- func (procMacro *procMacroDecorator) compilerProps() []interface{} {
- return append(procMacro.baseCompiler.compilerProps(),
- &procMacro.Properties)
- }
- func (procMacro *procMacroDecorator) compilerFlags(ctx ModuleContext, flags Flags) Flags {
- flags = procMacro.baseCompiler.compilerFlags(ctx, flags)
- flags.RustFlags = append(flags.RustFlags, "--extern proc_macro")
- return flags
- }
- func (procMacro *procMacroDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) buildOutput {
- fileName := procMacro.getStem(ctx) + ctx.toolchain().ProcMacroSuffix()
- outputFile := android.PathForModuleOut(ctx, fileName)
- srcPath, _ := srcPathFromModuleSrcs(ctx, procMacro.baseCompiler.Properties.Srcs)
- ret := TransformSrctoProcMacro(ctx, srcPath, deps, flags, outputFile)
- procMacro.baseCompiler.unstrippedOutputFile = outputFile
- return ret
- }
- func (procMacro *procMacroDecorator) getStem(ctx ModuleContext) string {
- stem := procMacro.baseCompiler.getStemWithoutSuffix(ctx)
- validateLibraryStem(ctx, stem, procMacro.crateName())
- return stem + String(procMacro.baseCompiler.Properties.Suffix)
- }
- func (procMacro *procMacroDecorator) autoDep(ctx android.BottomUpMutatorContext) autoDep {
- return rlibAutoDep
- }
- func (procMacro *procMacroDecorator) ProcMacro() bool {
- return true
- }
- func (procMacro *procMacroDecorator) everInstallable() bool {
- // Proc_macros are never installed
- return false
- }
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