rust: Move compiler interface to compiler.go

Refactor cleanup

Bug: 309943184
Test: m nothing
Change-Id: I7dcb0af64a4db71fdc46c0876b22e5015c02438e

rust/compiler.go

@@ -34,6 +34,44 @@ const (
 	DylibLinkage
 )
 
+type compiler interface {
+	initialize(ctx ModuleContext)
+	compilerFlags(ctx ModuleContext, flags Flags) Flags
+	cfgFlags(ctx ModuleContext, flags Flags) Flags
+	featureFlags(ctx ModuleContext, flags Flags) Flags
+	compilerProps() []interface{}
+	compile(ctx ModuleContext, flags Flags, deps PathDeps) buildOutput
+	compilerDeps(ctx DepsContext, deps Deps) Deps
+	crateName() string
+	rustdoc(ctx ModuleContext, flags Flags, deps PathDeps) android.OptionalPath
+
+	// Output directory in which source-generated code from dependencies is
+	// copied. This is equivalent to Cargo's OUT_DIR variable.
+	CargoOutDir() android.OptionalPath
+
+	// CargoPkgVersion returns the value of the Cargo_pkg_version property.
+	CargoPkgVersion() string
+
+	// CargoEnvCompat returns whether Cargo environment variables should be used.
+	CargoEnvCompat() bool
+
+	inData() bool
+	install(ctx ModuleContext)
+	relativeInstallPath() string
+	everInstallable() bool
+
+	nativeCoverage() bool
+
+	Disabled() bool
+	SetDisabled()
+
+	stdLinkage(ctx *depsContext) RustLinkage
+	noStdlibs() bool
+
+	unstrippedOutputFilePath() android.Path
+	strippedOutputFilePath() android.OptionalPath
+}
+
 func (compiler *baseCompiler) edition() string {
 	return proptools.StringDefault(compiler.Properties.Edition, config.DefaultEdition)
 }