rust: Add stub support for rust_ffi modules

This adds stubs support for rust_ffi and rust_ffi_shared modules. Usage
should match current cc usage. The stubs generator leveraged is the cc
stubs generator.

Bug: 203478530
Test: m blueprint_tests
Change-Id: I043b9714a357cd5fe17c183ccdf86900f5172e0e
diff --git a/cc/cc.go b/cc/cc.go
index 0db5c40..57b5e3c 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -160,6 +160,8 @@
 	Installable         *bool
 	// RelativeInstallPath returns the relative install path for this module.
 	RelativeInstallPath string
+	// TODO(b/362509506): remove this once all apex_exclude uses are switched to stubs.
+	RustApexExclude bool
 }
 
 var LinkableInfoProvider = blueprint.NewProvider[*LinkableInfo]()
@@ -943,6 +945,11 @@
 	return depTag == runtimeDepTag
 }
 
+func ExcludeInApexDepTag(depTag blueprint.DependencyTag) bool {
+	ccLibDepTag, ok := depTag.(libraryDependencyTag)
+	return ok && ccLibDepTag.excludeInApex
+}
+
 // Module contains the properties and members used by all C/C++ module types, and implements
 // the blueprint.Module interface.  It delegates to compiler, linker, and installer interfaces
 // to construct the output file.  Behavior can be customized with a Customizer, or "decorator",
@@ -1529,6 +1536,10 @@
 	return false
 }
 
+func (c *Module) RustApexExclude() bool {
+	return false
+}
+
 func (c *Module) IsStubsImplementationRequired() bool {
 	if lib := c.library; lib != nil {
 		return lib.IsStubsImplementationRequired()
@@ -2360,6 +2371,8 @@
 		OnlyInRecovery:       mod.OnlyInRecovery(),
 		Installable:          mod.Installable(),
 		RelativeInstallPath:  mod.RelativeInstallPath(),
+		// TODO(b/362509506): remove this once all apex_exclude uses are switched to stubs.
+		RustApexExclude: mod.RustApexExclude(),
 	}
 }
 
@@ -3354,9 +3367,12 @@
 				depFile = sharedLibraryInfo.TableOfContents
 
 				if !sharedLibraryInfo.IsStubs {
-					depPaths.directImplementationDeps = append(depPaths.directImplementationDeps, android.OutputFileForModule(ctx, dep, ""))
-					if info, ok := android.OtherModuleProvider(ctx, dep, ImplementationDepInfoProvider); ok {
-						depPaths.transitiveImplementationDeps = append(depPaths.transitiveImplementationDeps, info.ImplementationDeps)
+					// TODO(b/362509506): remove this additional check once all apex_exclude uses are switched to stubs.
+					if !linkableInfo.RustApexExclude {
+						depPaths.directImplementationDeps = append(depPaths.directImplementationDeps, android.OutputFileForModule(ctx, dep, ""))
+						if info, ok := android.OtherModuleProvider(ctx, dep, ImplementationDepInfoProvider); ok {
+							depPaths.transitiveImplementationDeps = append(depPaths.transitiveImplementationDeps, info.ImplementationDeps)
+						}
 					}
 				}