1// Copyright 2019 The Android Open Source Project 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15package rust 16 17import ( 18 "android/soong/android" 19) 20 21func init() { 22 android.RegisterModuleType("rust_proc_macro", ProcMacroFactory) 23} 24 25type ProcMacroCompilerProperties struct { 26} 27 28type procMacroDecorator struct { 29 *baseCompiler 30 *flagExporter 31 32 Properties ProcMacroCompilerProperties 33} 34 35type procMacroInterface interface { 36 ProcMacro() bool 37} 38 39var _ compiler = (*procMacroDecorator)(nil) 40var _ exportedFlagsProducer = (*procMacroDecorator)(nil) 41 42func ProcMacroFactory() android.Module { 43 module, _ := NewProcMacro(android.HostSupportedNoCross) 44 return module.Init() 45} 46 47func NewProcMacro(hod android.HostOrDeviceSupported) (*Module, *procMacroDecorator) { 48 module := newModule(hod, android.MultilibFirst) 49 50 procMacro := &procMacroDecorator{ 51 baseCompiler: NewBaseCompiler("lib", "lib64", InstallInSystem), 52 flagExporter: NewFlagExporter(), 53 } 54 55 // Don't sanitize procMacros 56 module.sanitize = nil 57 module.compiler = procMacro 58 59 return module, procMacro 60} 61 62func (procMacro *procMacroDecorator) compilerProps() []interface{} { 63 return append(procMacro.baseCompiler.compilerProps(), 64 &procMacro.Properties) 65} 66 67func (procMacro *procMacroDecorator) compilerFlags(ctx ModuleContext, flags Flags) Flags { 68 flags = procMacro.baseCompiler.compilerFlags(ctx, flags) 69 flags.RustFlags = append(flags.RustFlags, "--extern proc_macro") 70 flags.RustFlags = append(flags.RustFlags, "-C metadata="+ctx.ModuleName()) 71 return flags 72} 73 74func (procMacro *procMacroDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) buildOutput { 75 fileName := procMacro.getStem(ctx) + ctx.toolchain().ProcMacroSuffix() 76 outputFile := android.PathForModuleOut(ctx, fileName) 77 srcPath := crateRootPath(ctx, procMacro) 78 ret := TransformSrctoProcMacro(ctx, srcPath, deps, flags, outputFile) 79 procMacro.baseCompiler.unstrippedOutputFile = outputFile 80 81 return ret 82} 83 84func (procMacro *procMacroDecorator) getStem(ctx ModuleContext) string { 85 stem := procMacro.baseCompiler.getStemWithoutSuffix(ctx) 86 validateLibraryStem(ctx, stem, procMacro.crateName()) 87 88 return stem + String(procMacro.baseCompiler.Properties.Suffix) 89} 90 91func (procMacro *procMacroDecorator) autoDep(ctx android.BottomUpMutatorContext) autoDep { 92 return rlibAutoDep 93} 94 95func (procMacro *procMacroDecorator) ProcMacro() bool { 96 return true 97} 98 99func (procMacro *procMacroDecorator) everInstallable() bool { 100 // Proc_macros are never installed 101 return false 102} 103 104func (library *procMacroDecorator) moduleInfoJSON(ctx ModuleContext, moduleInfoJSON *android.ModuleInfoJSON) { 105 library.baseCompiler.moduleInfoJSON(ctx, moduleInfoJSON) 106 107 moduleInfoJSON.Class = []string{"PROC_MACRO_LIBRARIES"} 108} 109