Add aidl.deps prop to include aidl implicit deps explicitly in Android.bp

In a follow-up CL, we should eventually disallow aidl.include_dirs in cc rules so that the deps are always explicit and compatible with Bazel migration.

Test: go test
Bug: 278059962
Change-Id: Ia786cc8634d03589dc008f10b01e6bb2b9f2c7f0

2 files changed, 48 insertions, 0 deletions

diff --git a/android/filegroup.go b/android/filegroup.go
index c259f2106..0ca5dc50e 100644
--- a/android/filegroup.go
+++ b/android/filegroup.go
@@ -81,6 +81,7 @@ type bazelFilegroupAttributes struct {
 type bazelAidlLibraryAttributes struct {
 	Srcs                bazel.LabelListAttribute
 	Strip_import_prefix *string
+	Deps                bazel.LabelListAttribute
 }
 
 // api srcs can be contained in filegroups.
@@ -119,9 +120,12 @@ func (fg *fileGroup) ConvertWithBp2build(ctx TopDownMutatorContext) {
 	// and then convert
 	if fg.ShouldConvertToAidlLibrary(ctx) {
 		tags := []string{"apex_available=//apex_available:anyapex"}
+		deps := bazel.MakeLabelListAttribute(BazelLabelForModuleDeps(ctx, fg.properties.Aidl.Deps))
+
 		attrs := &bazelAidlLibraryAttributes{
 			Srcs:                srcs,
 			Strip_import_prefix: fg.properties.Path,
+			Deps:                deps,
 		}
 
 		props := bazel.BazelTargetModuleProperties{
@@ -187,6 +191,14 @@ type fileGroupProperties struct {
 	// Create a make variable with the specified name that contains the list of files in the
 	// filegroup, relative to the root of the source tree.
 	Export_to_make_var *string
+
+	// aidl is explicitly provided for implicit aidl dependencies
+	// TODO(b/278298615): aidl prop is a no-op in Soong and is an escape hatch
+	// to include implicit aidl dependencies for bazel migration compatibility
+	Aidl struct {
+		// List of aidl files or filegroup depended on by srcs
+		Deps []string `android:"path"`
+	}
 }
 
 type fileGroup struct {
diff --git a/bp2build/filegroup_conversion_test.go b/bp2build/filegroup_conversion_test.go
index 7ce559d9b..273d55636 100644
--- a/bp2build/filegroup_conversion_test.go
+++ b/bp2build/filegroup_conversion_test.go
@@ -105,6 +105,42 @@ func TestFilegroupWithAidlSrcs(t *testing.T) {
 	}
 }
 
+func TestFilegroupWithAidlDeps(t *testing.T) {
+	bp := `
+	filegroup {
+		name: "bar",
+		srcs: ["bar.aidl"],
+	}
+	filegroup {
+		name: "foo",
+		srcs: ["aidl/foo.aidl"],
+		path: "aidl",
+		aidl: {
+			deps: [":bar"],
+		}
+	}`
+
+	t.Run("filegroup with aidl deps", func(t *testing.T) {
+		expectedBazelTargets := []string{
+			MakeBazelTargetNoRestrictions("aidl_library", "bar", AttrNameToString{
+				"srcs": `["bar.aidl"]`,
+				"tags": `["apex_available=//apex_available:anyapex"]`,
+			}),
+			MakeBazelTargetNoRestrictions("aidl_library", "foo", AttrNameToString{
+				"srcs":                `["aidl/foo.aidl"]`,
+				"strip_import_prefix": `"aidl"`,
+				"deps":                `[":bar"]`,
+				"tags":                `["apex_available=//apex_available:anyapex"]`,
+			}),
+		}
+		runFilegroupTestCase(t, Bp2buildTestCase{
+			Description:          "filegroup with aidl deps",
+			Blueprint:            bp,
+			ExpectedBazelTargets: expectedBazelTargets,
+		})
+	})
+}
+
 func TestFilegroupWithAidlAndNonAidlSrcs(t *testing.T) {
 	runFilegroupTestCase(t, Bp2buildTestCase{
 		Description: "filegroup with aidl and non-aidl srcs",