Merge "Support using java_sdk_library components in stub_libs" am: f03aaf5fc7

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/1752643

Change-Id: I4bc60c3680fc2fa94ba12731b7f5179f8d5e3212

java/bootclasspath_fragment_test.go

@@ -197,7 +197,7 @@ func TestBootclasspathFragment_StubLibs(t *testing.T) {
 				],
 			},
 			core_platform_api: {
-				stub_libs: ["mycoreplatform"],
+				stub_libs: ["mycoreplatform.stubs"],
 			},
 		}
 

java/hiddenapi_modular.go

@@ -586,6 +586,13 @@ type StubDexJarsByModule map[string]ModuleStubDexJars
 // addStubDexJar adds a stub dex jar path provided by the specified module for the specified scope.
 func (s StubDexJarsByModule) addStubDexJar(ctx android.ModuleContext, module android.Module, scope *HiddenAPIScope, stubDexJar android.Path) {
 	name := android.RemoveOptionalPrebuiltPrefix(module.Name())
+
+	// Each named module provides one dex jar for each scope. However, in some cases different API
+	// versions of a single classes are provided by separate modules. e.g. the core platform
+	// version of java.lang.Object is provided by the legacy.art.module.platform.api module but the
+	// public version is provided by the art.module.public.api module. In those cases it is necessary
+	// to treat all those modules as they were the same name, otherwise it will result in multiple
+	// definitions of a single class being passed to hidden API processing which will cause an error.
 	if name == scope.nonUpdatablePrebuiltModule || name == scope.nonUpdatableSourceModule {
 		// Treat all *android-non-updatable* modules as if they were part of an android-non-updatable
 		// java_sdk_library.
@@ -606,6 +613,14 @@ func (s StubDexJarsByModule) addStubDexJar(ctx android.ModuleContext, module and
 		// conscrypt.module.public.api java_sdk_library which will be the case once the former has been
 		// migrated to a module_lib API.
 		name = "conscrypt.module.public.api"
+	} else if d, ok := module.(SdkLibraryComponentDependency); ok {
+		sdkLibraryName := d.SdkLibraryName()
+		if sdkLibraryName != nil {
+			// The module is a component of a java_sdk_library so use the name of the java_sdk_library.
+			// e.g. if this module is `foo.system.stubs` and is part of the `foo` java_sdk_library then
+			// use `foo` as the name.
+			name = *sdkLibraryName
+		}
 	}
 	stubDexJarsByScope := s[name]
 	if stubDexJarsByScope == nil {

java/sdk_library.go

@@ -675,10 +675,13 @@ func (c *commonToSdkLibraryAndImport) initCommonAfterDefaultsApplied(ctx android
 		return false
 	}
 
+	namePtr := proptools.StringPtr(c.module.BaseModuleName())
+	c.sdkLibraryComponentProperties.SdkLibraryName = namePtr
+
 	// Only track this sdk library if this can be used as a shared library.
 	if c.sharedLibrary() {
 		// Use the name specified in the module definition as the owner.
-		c.sdkLibraryComponentProperties.SdkLibraryToImplicitlyTrack = proptools.StringPtr(c.module.BaseModuleName())
+		c.sdkLibraryComponentProperties.SdkLibraryToImplicitlyTrack = namePtr
 	}
 
 	return true
@@ -922,15 +925,19 @@ func (c *commonToSdkLibraryAndImport) SdkRemovedTxtFile(ctx android.BaseModuleCo
 
 func (c *commonToSdkLibraryAndImport) sdkComponentPropertiesForChildLibrary() interface{} {
 	componentProps := &struct {
+		SdkLibraryName              *string
 		SdkLibraryToImplicitlyTrack *string
 	}{}
 
+	namePtr := proptools.StringPtr(c.module.BaseModuleName())
+	componentProps.SdkLibraryName = namePtr
+
 	if c.sharedLibrary() {
 		// Mark the stubs library as being components of this java_sdk_library so that
 		// any app that includes code which depends (directly or indirectly) on the stubs
 		// library will have the appropriate <uses-library> invocation inserted into its
 		// manifest if necessary.
-		componentProps.SdkLibraryToImplicitlyTrack = proptools.StringPtr(c.module.BaseModuleName())
+		componentProps.SdkLibraryToImplicitlyTrack = namePtr
 	}
 
 	return componentProps
@@ -949,6 +956,8 @@ func (c *commonToSdkLibraryAndImport) stubLibrariesCompiledForDex() bool {
 
 // Properties related to the use of a module as an component of a java_sdk_library.
 type SdkLibraryComponentProperties struct {
+	// The name of the java_sdk_library/_import module.
+	SdkLibraryName *string `blueprint:"mutated"`
 
 	// The name of the java_sdk_library/_import to add to a <uses-library> entry
 	// in the AndroidManifest.xml of any Android app that includes code that references
@@ -966,6 +975,11 @@ func (e *EmbeddableSdkLibraryComponent) initSdkLibraryComponent(module android.M
 	module.AddProperties(&e.sdkLibraryComponentProperties)
 }
 
+// to satisfy SdkLibraryComponentDependency
+func (e *EmbeddableSdkLibraryComponent) SdkLibraryName() *string {
+	return e.sdkLibraryComponentProperties.SdkLibraryName
+}
+
 // to satisfy SdkLibraryComponentDependency
 func (e *EmbeddableSdkLibraryComponent) OptionalImplicitSdkLibrary() *string {
 	return e.sdkLibraryComponentProperties.SdkLibraryToImplicitlyTrack
@@ -982,6 +996,9 @@ func (e *EmbeddableSdkLibraryComponent) OptionalSdkLibraryImplementation() *stri
 type SdkLibraryComponentDependency interface {
 	UsesLibraryDependency
 
+	// SdkLibraryName returns the name of the java_sdk_library/_import module.
+	SdkLibraryName() *string
+
 	// The optional name of the sdk library that should be implicitly added to the
 	// AndroidManifest of an app that contains code which references the sdk library.
 	//