Merge changes from topic "aidl_interface_bp2build"

* changes:
  add bp2build unit tests for aidl_interface
  AIDL source generation accounts for Bazel paths
  convert .aidl srcs for java_library
  add Partition method to LabelListAttribute

android/allowlists/allowlists.go

@@ -157,6 +157,7 @@ var (
 		"frameworks/av/media/liberror":                       Bp2BuildDefaultTrueRecursively,
 		"frameworks/av/services/minijail":                    Bp2BuildDefaultTrueRecursively,
 		"frameworks/base/media/tests/MediaDump":              Bp2BuildDefaultTrue,
+		"frameworks/base/services/tests/servicestests/aidl":  Bp2BuildDefaultTrue,
 		"frameworks/base/startop/apps/test":                  Bp2BuildDefaultTrue,
 		"frameworks/base/tests/appwidgets/AppWidgetHostTest": Bp2BuildDefaultTrueRecursively,
 		"frameworks/native/libs/adbd_auth":                   Bp2BuildDefaultTrueRecursively,
@@ -408,6 +409,7 @@ var (
 		"linker_config",
 		"java_import",
 		"java_import_host",
+		"aidl_interface_headers",
 	}
 
 	Bp2buildModuleDoNotConvertList = []string{

android/filegroup.go

@@ -16,6 +16,7 @@ package android
 
 import (
 	"path/filepath"
+	"regexp"
 	"strings"
 
 	"android/soong/bazel"
@@ -37,6 +38,34 @@ func IsFilegroup(ctx bazel.OtherModuleContext, m blueprint.Module) bool {
 	return ctx.OtherModuleType(m) == "filegroup"
 }
 
+var (
+	// ignoring case, checks for proto or protos as an independent word in the name, whether at the
+	// beginning, end, or middle. e.g. "proto.foo", "bar-protos", "baz_proto_srcs" would all match
+	filegroupLikelyProtoPattern = regexp.MustCompile("(?i)(^|[^a-z])proto(s)?([^a-z]|$)")
+	filegroupLikelyAidlPattern  = regexp.MustCompile("(?i)(^|[^a-z])aidl([^a-z]|$)")
+
+	ProtoSrcLabelPartition = bazel.LabelPartition{
+		Extensions:  []string{".proto"},
+		LabelMapper: isFilegroupWithPattern(filegroupLikelyProtoPattern),
+	}
+	AidlSrcLabelPartition = bazel.LabelPartition{
+		Extensions:  []string{".aidl"},
+		LabelMapper: isFilegroupWithPattern(filegroupLikelyAidlPattern),
+	}
+)
+
+func isFilegroupWithPattern(pattern *regexp.Regexp) bazel.LabelMapper {
+	return func(ctx bazel.OtherModuleContext, label bazel.Label) (string, bool) {
+		m, exists := ctx.ModuleFromName(label.OriginalModuleName)
+		labelStr := label.Label
+		if !exists || !IsFilegroup(ctx, m) {
+			return labelStr, false
+		}
+		likelyMatched := pattern.MatchString(label.OriginalModuleName)
+		return labelStr, likelyMatched
+	}
+}
+
 // https://docs.bazel.build/versions/master/be/general.html#filegroup
 type bazelFilegroupAttributes struct {
 	Srcs bazel.LabelListAttribute
@@ -232,3 +261,16 @@ func (fg *fileGroup) GetAidlLibraryLabel(ctx BazelConversionPathContext) string
 		return fg.GetBazelLabel(ctx, fg)
 	}
 }
+
+// Given a name in srcs prop, check to see if the name references a filegroup
+// and the filegroup is converted to aidl_library
+func IsConvertedToAidlLibrary(ctx BazelConversionPathContext, name string) bool {
+	if module, ok := ctx.ModuleFromName(name); ok {
+		if IsFilegroup(ctx, module) {
+			if fg, ok := module.(Bp2buildAidlLibrary); ok {
+				return fg.ShouldConvertToAidlLibrary(ctx)
+			}
+		}
+	}
+	return false
+}

android/fixture.go

@@ -642,6 +642,20 @@ type TestResult struct {
 	NinjaDeps []string
 }
 
+type TestPathContext struct {
+	*TestResult
+}
+
+var _ PathContext = &TestPathContext{}
+
+func (t *TestPathContext) Config() Config {
+	return t.TestResult.Config
+}
+
+func (t *TestPathContext) AddNinjaFileDeps(deps ...string) {
+	panic("unimplemented")
+}
+
 func createFixture(t *testing.T, buildDir string, preparers []*simpleFixturePreparer) Fixture {
 	config := TestConfig(buildDir, nil, "", nil)
 	ctx := NewTestContext(config)

android/paths.go

@@ -1978,6 +1978,18 @@ func PathForTesting(paths ...string) Path {
 	return testPath{basePath{path: p, rel: p}}
 }
 
+func PathForTestingWithRel(path, rel string) Path {
+	p, err := validateSafePath(path, rel)
+	if err != nil {
+		panic(err)
+	}
+	r, err := validatePath(rel)
+	if err != nil {
+		panic(err)
+	}
+	return testPath{basePath{path: p, rel: r}}
+}
+
 // PathsForTesting returns a Path constructed from each element in strs. It should only be used from within tests.
 func PathsForTesting(strs ...string) Paths {
 	p := make(Paths, len(strs))

android/proto.go

@@ -16,7 +16,6 @@ package android
 
 import (
 	"android/soong/bazel"
-	"regexp"
 	"strings"
 
 	"github.com/google/blueprint"
@@ -27,14 +26,6 @@ const (
 	canonicalPathFromRootDefault = true
 )
 
-var (
-	// ignoring case, checks for proto or protos as an independent word in the name, whether at the
-	// beginning, end, or middle. e.g. "proto.foo", "bar-protos", "baz_proto_srcs" would all match
-	filegroupLikelyProtoPattern = regexp.MustCompile("(?i)(^|[^a-z])proto(s)?([^a-z]|$)")
-
-	ProtoSrcLabelPartition = bazel.LabelPartition{Extensions: []string{".proto"}, LabelMapper: isProtoFilegroup}
-)
-
 // TODO(ccross): protos are often used to communicate between multiple modules.  If the only
 // way to convert a proto to source is to reference it as a source file, and external modules cannot
 // reference source files in other modules, then every module that owns a proto file will need to
@@ -213,13 +204,3 @@ func Bp2buildProtoProperties(ctx Bp2buildMutatorContext, m *ModuleBase, srcs baz
 
 	return info, true
 }
-
-func isProtoFilegroup(ctx bazel.OtherModuleContext, label bazel.Label) (string, bool) {
-	m, exists := ctx.ModuleFromName(label.OriginalModuleName)
-	labelStr := label.Label
-	if !exists || !IsFilegroup(ctx, m) {
-		return labelStr, false
-	}
-	likelyProtos := filegroupLikelyProtoPattern.MatchString(label.OriginalModuleName)
-	return labelStr, likelyProtos
-}

bazel/properties.go

@@ -119,7 +119,7 @@ func (ll *LabelList) uniqueParentDirectories() []string {
 	return dirs
 }
 
-// Add inserts the label Label at the end of the LabelList.
+// Add inserts the label Label at the end of the LabelList.Includes.
 func (ll *LabelList) Add(label *Label) {
 	if label == nil {
 		return
@@ -127,6 +127,14 @@ func (ll *LabelList) Add(label *Label) {
 	ll.Includes = append(ll.Includes, *label)
 }
 
+// AddExclude inserts the label Label at the end of the LabelList.Excludes.
+func (ll *LabelList) AddExclude(label *Label) {
+	if label == nil {
+		return
+	}
+	ll.Excludes = append(ll.Excludes, *label)
+}
+
 // Append appends the fields of other labelList to the corresponding fields of ll.
 func (ll *LabelList) Append(other LabelList) {
 	if len(ll.Includes) > 0 || len(other.Includes) > 0 {
@@ -137,6 +145,30 @@ func (ll *LabelList) Append(other LabelList) {
 	}
 }
 
+// Partition splits a LabelList into two LabelLists depending on the return value
+// of the predicate.
+// This function preserves the Includes and Excludes, but it does not provide
+// that information to the partition function.
+func (ll *LabelList) Partition(predicate func(label Label) bool) (LabelList, LabelList) {
+	predicated := LabelList{}
+	unpredicated := LabelList{}
+	for _, include := range ll.Includes {
+		if predicate(include) {
+			predicated.Add(&include)
+		} else {
+			unpredicated.Add(&include)
+		}
+	}
+	for _, exclude := range ll.Excludes {
+		if predicate(exclude) {
+			predicated.AddExclude(&exclude)
+		} else {
+			unpredicated.AddExclude(&exclude)
+		}
+	}
+	return predicated, unpredicated
+}
+
 // UniqueSortedBazelLabels takes a []Label and deduplicates the labels, and returns
 // the slice in a sorted order.
 func UniqueSortedBazelLabels(originalLabels []Label) []Label {
@@ -822,6 +854,29 @@ func (lla *LabelListAttribute) ResolveExcludes() {
 	}
 }
 
+// Partition splits a LabelListAttribute into two LabelListAttributes depending
+// on the return value of the predicate.
+// This function preserves the Includes and Excludes, but it does not provide
+// that information to the partition function.
+func (lla LabelListAttribute) Partition(predicate func(label Label) bool) (LabelListAttribute, LabelListAttribute) {
+	predicated := LabelListAttribute{}
+	unpredicated := LabelListAttribute{}
+
+	valuePartitionTrue, valuePartitionFalse := lla.Value.Partition(predicate)
+	predicated.SetValue(valuePartitionTrue)
+	unpredicated.SetValue(valuePartitionFalse)
+
+	for axis, selectValueLabelLists := range lla.ConfigurableValues {
+		for config, labelList := range selectValueLabelLists {
+			configPredicated, configUnpredicated := labelList.Partition(predicate)
+			predicated.SetSelectValue(axis, config, configPredicated)
+			unpredicated.SetSelectValue(axis, config, configUnpredicated)
+		}
+	}
+
+	return predicated, unpredicated
+}
+
 // OtherModuleContext is a limited context that has methods with information about other modules.
 type OtherModuleContext interface {
 	ModuleFromName(name string) (blueprint.Module, bool)

bazel/properties_test.go

@@ -310,6 +310,134 @@ func TestResolveExcludes(t *testing.T) {
 	}
 }
 
+func TestLabelListAttributePartition(t *testing.T) {
+	testCases := []struct {
+		name         string
+		input        LabelListAttribute
+		predicated   LabelListAttribute
+		unpredicated LabelListAttribute
+		predicate    func(label Label) bool
+	}{
+		{
+			name: "move all to predicated partition",
+			input: MakeLabelListAttribute(makeLabelList(
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+			)),
+			predicated: MakeLabelListAttribute(makeLabelList(
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+			)),
+			unpredicated: LabelListAttribute{},
+			predicate: func(label Label) bool {
+				return true
+			},
+		},
+		{
+			name: "move all to unpredicated partition",
+			input: MakeLabelListAttribute(makeLabelList(
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+			)),
+			predicated: LabelListAttribute{},
+			unpredicated: MakeLabelListAttribute(makeLabelList(
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+			)),
+			predicate: func(label Label) bool {
+				return false
+			},
+		},
+		{
+			name: "partition includes and excludes",
+			input: MakeLabelListAttribute(makeLabelList(
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+			)),
+			predicated: MakeLabelListAttribute(makeLabelList(
+				[]string{"keep1", "keep2"},
+				[]string{"keep1", "keep2"},
+			)),
+			unpredicated: MakeLabelListAttribute(makeLabelList(
+				[]string{"throw1", "throw2"},
+				[]string{"throw1", "throw2"},
+			)),
+			predicate: func(label Label) bool {
+				return strings.HasPrefix(label.Label, "keep")
+			},
+		},
+		{
+			name: "partition excludes only",
+			input: MakeLabelListAttribute(makeLabelList(
+				[]string{},
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+			)),
+			predicated: MakeLabelListAttribute(makeLabelList(
+				[]string{},
+				[]string{"keep1", "keep2"},
+			)),
+			unpredicated: MakeLabelListAttribute(makeLabelList(
+				[]string{},
+				[]string{"throw1", "throw2"},
+			)),
+			predicate: func(label Label) bool {
+				return strings.HasPrefix(label.Label, "keep")
+			},
+		},
+		{
+			name: "partition includes only",
+			input: MakeLabelListAttribute(makeLabelList(
+				[]string{"keep1", "throw1", "keep2", "throw2"},
+				[]string{},
+			)),
+			predicated: MakeLabelListAttribute(makeLabelList(
+				[]string{"keep1", "keep2"},
+				[]string{},
+			)),
+			unpredicated: MakeLabelListAttribute(makeLabelList(
+				[]string{"throw1", "throw2"},
+				[]string{},
+			)),
+			predicate: func(label Label) bool {
+				return strings.HasPrefix(label.Label, "keep")
+			},
+		},
+		{
+			name:         "empty partition",
+			input:        MakeLabelListAttribute(makeLabelList([]string{}, []string{})),
+			predicated:   LabelListAttribute{},
+			unpredicated: LabelListAttribute{},
+			predicate: func(label Label) bool {
+				return true
+			},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			predicated, unpredicated := tc.input.Partition(tc.predicate)
+			if !predicated.Value.Equals(tc.predicated.Value) {
+				t.Errorf("expected predicated labels to be %v; got %v", tc.predicated, predicated)
+			}
+			for axis, configs := range predicated.ConfigurableValues {
+				tcConfigs, ok := tc.predicated.ConfigurableValues[axis]
+				if !ok || !reflect.DeepEqual(configs, tcConfigs) {
+					t.Errorf("expected predicated labels to be %v; got %v", tc.predicated, predicated)
+				}
+			}
+			if !unpredicated.Value.Equals(tc.unpredicated.Value) {
+				t.Errorf("expected unpredicated labels to be %v; got %v", tc.unpredicated, unpredicated)
+			}
+			for axis, configs := range unpredicated.ConfigurableValues {
+				tcConfigs, ok := tc.unpredicated.ConfigurableValues[axis]
+				if !ok || !reflect.DeepEqual(configs, tcConfigs) {
+					t.Errorf("expected unpredicated labels to be %v; got %v", tc.unpredicated, unpredicated)
+				}
+			}
+		})
+	}
+}
+
 // labelAddSuffixForTypeMapper returns a LabelMapper that adds suffix to label name for modules of
 // typ
 func labelAddSuffixForTypeMapper(suffix, typ string) LabelMapper {

bp2build/Android.bp

@@ -18,6 +18,7 @@ bootstrap_go_package {
         "testing.go",
     ],
     deps: [
+        "aidl-soong-rules",
         "soong-android",
         "soong-android-allowlists",
         "soong-android-soongconfig",
@@ -36,6 +37,7 @@ bootstrap_go_package {
     ],
     testSrcs: [
         "aar_conversion_test.go",
+        "aidl_interface_conversion_test.go",
         "android_app_certificate_conversion_test.go",
         "android_app_conversion_test.go",
         "apex_conversion_test.go",

bp2build/aidl_interface_conversion_test.go

@@ -0,0 +1,249 @@
+package bp2build
+
+import (
+	"android/soong/aidl"
+	"android/soong/android"
+	"testing"
+)
+
+func runAidlInterfaceTestCase(t *testing.T, tc Bp2buildTestCase) {
+	t.Helper()
+	RunBp2BuildTestCase(
+		t,
+		func(ctx android.RegistrationContext) {
+			ctx.RegisterModuleType("aidl_interface", aidl.AidlInterfaceFactory)
+			ctx.RegisterModuleType("aidl_interface_headers", aidl.AidlInterfaceHeadersFactory)
+		},
+		tc,
+	)
+}
+
+func TestAidlInterfaceHeaders(t *testing.T) {
+	runAidlInterfaceTestCase(t, Bp2buildTestCase{
+		Description: `aidl_interface_headers`,
+		Blueprint: `
+aidl_interface_headers {
+    name: "aidl-interface-headers",
+	include_dir: "src",
+	srcs: [
+		"src/A.aidl",
+	],
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTargetNoRestrictions("aidl_library", "aidl-interface-headers", AttrNameToString{
+				"strip_import_prefix": `"src"`,
+				"hdrs":                `["src/A.aidl"]`,
+			}),
+		},
+	})
+}
+
+func TestAidlInterface(t *testing.T) {
+	runAidlInterfaceTestCase(t, Bp2buildTestCase{
+		Description: `aidl_interface with single "latest" aidl_interface import`,
+		Blueprint: `
+aidl_interface_headers {
+    name: "aidl-interface-headers",
+}
+aidl_interface {
+    name: "aidl-interface-import",
+    versions: [
+        "1",
+        "2",
+    ],
+}
+aidl_interface {
+    name: "aidl-interface1",
+    flags: ["--flag1"],
+    imports: [
+        "aidl-interface-import-V1",
+    ],
+    headers: [
+        "aidl-interface-headers",
+    ],
+    versions: [
+        "1",
+        "2",
+        "3",
+    ],
+}`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTargetNoRestrictions("aidl_library", "aidl-interface-headers", AttrNameToString{}),
+			MakeBazelTargetNoRestrictions("aidl_interface", "aidl-interface-import", AttrNameToString{
+				"backends": `[
+        "cpp",
+        "java",
+        "ndk",
+    ]`,
+				"versions": `[
+        "1",
+        "2",
+    ]`,
+			}),
+			MakeBazelTargetNoRestrictions("aidl_interface", "aidl-interface1", AttrNameToString{
+				"backends": `[
+        "cpp",
+        "java",
+        "ndk",
+    ]`,
+				"deps": `[
+        ":aidl-interface-import-V1",
+        ":aidl-interface-headers",
+    ]`,
+				"flags": `["--flag1"]`,
+				"versions": `[
+        "1",
+        "2",
+        "3",
+    ]`,
+			}),
+		},
+	})
+}
+
+func TestAidlInterfaceWithNoProperties(t *testing.T) {
+	runAidlInterfaceTestCase(t, Bp2buildTestCase{
+		Description: `aidl_interface no properties set`,
+		Blueprint: `
+aidl_interface {
+    name: "aidl-interface1",
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTargetNoRestrictions("aidl_interface", "aidl-interface1", AttrNameToString{
+				"backends": `[
+        "cpp",
+        "java",
+        "ndk",
+    ]`,
+			}),
+		},
+	})
+}
+
+func TestAidlInterfaceWithDisabledBackends(t *testing.T) {
+	runAidlInterfaceTestCase(t, Bp2buildTestCase{
+		Description: `aidl_interface with some backends disabled`,
+		Blueprint: `
+aidl_interface {
+    name: "aidl-interface1",
+    backend: {
+        ndk: {
+            enabled: false,
+        },
+        cpp: {
+            enabled: false,
+        },
+    },
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTargetNoRestrictions("aidl_interface", "aidl-interface1", AttrNameToString{
+				"backends": `["java"]`,
+			}),
+		},
+	})
+}
+
+func TestAidlInterfaceWithLatestImport(t *testing.T) {
+	runAidlInterfaceTestCase(t, Bp2buildTestCase{
+		Description: `aidl_interface with single "latest" aidl_interface import`,
+		Blueprint: `
+aidl_interface {
+    name: "aidl-interface-import",
+    versions: [
+        "1",
+        "2",
+    ],
+}
+aidl_interface {
+    name: "aidl-interface1",
+    imports: [
+        "aidl-interface-import",
+    ],
+    versions: [
+        "1",
+        "2",
+        "3",
+    ],
+}`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTargetNoRestrictions("aidl_interface", "aidl-interface-import", AttrNameToString{
+				"backends": `[
+        "cpp",
+        "java",
+        "ndk",
+    ]`,
+				"versions": `[
+        "1",
+        "2",
+    ]`,
+			}),
+			MakeBazelTargetNoRestrictions("aidl_interface", "aidl-interface1", AttrNameToString{
+				"backends": `[
+        "cpp",
+        "java",
+        "ndk",
+    ]`,
+				"deps": `[":aidl-interface-import-latest"]`,
+				"versions": `[
+        "1",
+        "2",
+        "3",
+    ]`,
+			}),
+		},
+	})
+}
+
+func TestAidlInterfaceWithVersionedImport(t *testing.T) {
+	runAidlInterfaceTestCase(t, Bp2buildTestCase{
+		Description: `aidl_interface with single versioned aidl_interface import`,
+		Blueprint: `
+aidl_interface {
+    name: "aidl-interface-import",
+    versions: [
+        "1",
+        "2",
+    ],
+}
+aidl_interface {
+    name: "aidl-interface1",
+    imports: [
+        "aidl-interface-import-V2",
+    ],
+    versions: [
+        "1",
+        "2",
+        "3",
+    ],
+}`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTargetNoRestrictions("aidl_interface", "aidl-interface-import", AttrNameToString{
+				"backends": `[
+        "cpp",
+        "java",
+        "ndk",
+    ]`,
+				"versions": `[
+        "1",
+        "2",
+    ]`,
+			}),
+			MakeBazelTargetNoRestrictions("aidl_interface", "aidl-interface1", AttrNameToString{
+				"backends": `[
+        "cpp",
+        "java",
+        "ndk",
+    ]`,
+				"deps": `[":aidl-interface-import-V2"]`,
+				"versions": `[
+        "1",
+        "2",
+        "3",
+    ]`,
+			}),
+		},
+	})
+}

bp2build/java_library_conversion_test.go

@@ -372,3 +372,132 @@ func TestJavaLibraryResourcesFailsWithMultipleDirs(t *testing.T) {
 		ExpectedBazelTargets: []string{},
 	})
 }
+
+func TestJavaLibraryAidl(t *testing.T) {
+	runJavaLibraryTestCase(t, Bp2buildTestCase{
+		Description:                "Java library - aidl creates separate dependency",
+		ModuleTypeUnderTest:        "java_library",
+		ModuleTypeUnderTestFactory: java.LibraryFactory,
+		Blueprint: `java_library {
+        name: "example_lib",
+        srcs: [
+			"a.java",
+			"b.java",
+			"a.aidl",
+			"b.aidl",
+		],
+        bazel_module: { bp2build_available: true },
+}`,
+		ExpectedBazelTargets: []string{
+			makeBazelTarget("aidl_library", "example_lib_aidl_library", AttrNameToString{
+				"srcs": `[
+        "a.aidl",
+        "b.aidl",
+    ]`,
+			}),
+			makeBazelTarget("java_aidl_library", "example_lib_java_aidl_library", AttrNameToString{
+				"deps": `[":example_lib_aidl_library"]`,
+			}),
+			makeBazelTarget("java_library", "example_lib", AttrNameToString{
+				"deps":    `[":example_lib_java_aidl_library"]`,
+				"exports": `[":example_lib_java_aidl_library"]`,
+				"srcs": `[
+        "a.java",
+        "b.java",
+    ]`,
+			}),
+		}})
+}
+
+func TestJavaLibraryAidlSrcsNoFileGroup(t *testing.T) {
+	runJavaLibraryTestCaseWithRegistrationCtxFunc(t, Bp2buildTestCase{
+		Description:                "Java library - aidl filegroup is parsed",
+		ModuleTypeUnderTest:        "java_library",
+		ModuleTypeUnderTestFactory: java.LibraryFactory,
+		Blueprint: `
+java_library {
+        name: "example_lib",
+        srcs: [
+			"a.java",
+			"b.aidl",
+		],
+        bazel_module: { bp2build_available: true },
+}`,
+		ExpectedBazelTargets: []string{
+			makeBazelTarget("aidl_library", "example_lib_aidl_library", AttrNameToString{
+				"srcs": `["b.aidl"]`,
+			}),
+			makeBazelTarget("java_aidl_library", "example_lib_java_aidl_library", AttrNameToString{
+				"deps": `[":example_lib_aidl_library"]`,
+			}),
+			makeBazelTarget("java_library", "example_lib", AttrNameToString{
+				"deps":    `[":example_lib_java_aidl_library"]`,
+				"exports": `[":example_lib_java_aidl_library"]`,
+				"srcs":    `["a.java"]`,
+			}),
+		},
+	}, func(ctx android.RegistrationContext) {
+		ctx.RegisterModuleType("filegroup", android.FileGroupFactory)
+	})
+}
+
+func TestJavaLibraryAidlFilegroup(t *testing.T) {
+	runJavaLibraryTestCaseWithRegistrationCtxFunc(t, Bp2buildTestCase{
+		Description:                "Java library - aidl filegroup is parsed",
+		ModuleTypeUnderTest:        "java_library",
+		ModuleTypeUnderTestFactory: java.LibraryFactory,
+		Blueprint: `
+filegroup {
+	name: "random_other_files",
+	srcs: [
+		"a.java",
+		"b.java",
+	],
+}
+filegroup {
+	name: "aidl_files",
+	srcs: [
+		"a.aidl",
+		"b.aidl",
+	],
+}
+java_library {
+        name: "example_lib",
+        srcs: [
+			"a.java",
+			"b.java",
+			":aidl_files",
+			":random_other_files",
+		],
+        bazel_module: { bp2build_available: true },
+}`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTargetNoRestrictions("aidl_library", "aidl_files", AttrNameToString{
+				"srcs": `[
+        "a.aidl",
+        "b.aidl",
+    ]`,
+			}),
+			makeBazelTarget("java_aidl_library", "example_lib_java_aidl_library", AttrNameToString{
+				"deps": `[":aidl_files"]`,
+			}),
+			makeBazelTarget("java_library", "example_lib", AttrNameToString{
+				"deps":    `[":example_lib_java_aidl_library"]`,
+				"exports": `[":example_lib_java_aidl_library"]`,
+				"srcs": `[
+        "a.java",
+        "b.java",
+        ":random_other_files",
+    ]`,
+			}),
+			MakeBazelTargetNoRestrictions("filegroup", "random_other_files", AttrNameToString{
+				"srcs": `[
+        "a.java",
+        "b.java",
+    ]`,
+			}),
+		},
+	}, func(ctx android.RegistrationContext) {
+		ctx.RegisterModuleType("filegroup", android.FileGroupFactory)
+	})
+}

go.mod

@@ -1,13 +1,17 @@
 module android/soong
 
-require google.golang.org/protobuf v0.0.0
-
-require github.com/google/blueprint v0.0.0
+require (
+	google.golang.org/protobuf v0.0.0
+	github.com/google/blueprint v0.0.0
+	android/soong/aidl v0.0.0
+)
 
 replace google.golang.org/protobuf v0.0.0 => ../../external/golang-protobuf
 
 replace github.com/google/blueprint v0.0.0 => ../blueprint
 
+replace android/soong/aidl v0.0.0 => ../../system/tools/aidl/build
+
 // Indirect deps from golang-protobuf
 exclude github.com/golang/protobuf v1.5.0
 

java/base.go

@@ -820,7 +820,7 @@ func (j *Module) individualAidlFlags(ctx android.ModuleContext, aidlFile android
 }
 
 func (j *Module) aidlFlags(ctx android.ModuleContext, aidlPreprocess android.OptionalPath,
-	aidlIncludeDirs android.Paths) (string, android.Paths) {
+	aidlIncludeDirs android.Paths, aidlSrcs android.Paths) (string, android.Paths) {
 
 	aidlIncludes := android.PathsForModuleSrc(ctx, j.deviceProperties.Aidl.Local_include_dirs)
 	aidlIncludes = append(aidlIncludes,
@@ -830,6 +830,7 @@ func (j *Module) aidlFlags(ctx android.ModuleContext, aidlPreprocess android.Opt
 
 	var flags []string
 	var deps android.Paths
+	var includeDirs android.Paths
 
 	flags = append(flags, j.deviceProperties.Aidl.Flags...)
 
@@ -837,21 +838,24 @@ func (j *Module) aidlFlags(ctx android.ModuleContext, aidlPreprocess android.Opt
 		flags = append(flags, "-p"+aidlPreprocess.String())
 		deps = append(deps, aidlPreprocess.Path())
 	} else if len(aidlIncludeDirs) > 0 {
-		flags = append(flags, android.JoinWithPrefix(aidlIncludeDirs.Strings(), "-I"))
+		includeDirs = append(includeDirs, aidlIncludeDirs...)
 	}
 
 	if len(j.exportAidlIncludeDirs) > 0 {
-		flags = append(flags, android.JoinWithPrefix(j.exportAidlIncludeDirs.Strings(), "-I"))
+		includeDirs = append(includeDirs, j.exportAidlIncludeDirs...)
 	}
 
 	if len(aidlIncludes) > 0 {
-		flags = append(flags, android.JoinWithPrefix(aidlIncludes.Strings(), "-I"))
+		includeDirs = append(includeDirs, aidlIncludes...)
 	}
 
-	flags = append(flags, "-I"+android.PathForModuleSrc(ctx).String())
+	includeDirs = append(includeDirs, android.PathForModuleSrc(ctx))
 	if src := android.ExistentPathForSource(ctx, ctx.ModuleDir(), "src"); src.Valid() {
-		flags = append(flags, "-I"+src.String())
+		includeDirs = append(includeDirs, src.Path())
 	}
+	flags = append(flags, android.JoinWithPrefix(includeDirs.Strings(), "-I"))
+	// add flags for dirs containing AIDL srcs that haven't been specified yet
+	flags = append(flags, genAidlIncludeFlags(ctx, aidlSrcs, includeDirs))
 
 	if Bool(j.deviceProperties.Aidl.Generate_traces) {
 		flags = append(flags, "-t")
@@ -935,9 +939,6 @@ func (j *Module) collectBuilderFlags(ctx android.ModuleContext, deps deps) javaB
 	// systemModules
 	flags.systemModules = deps.systemModules
 
-	// aidl flags.
-	flags.aidlFlags, flags.aidlDeps = j.aidlFlags(ctx, deps.aidlPreprocess, deps.aidlIncludeDirs)
-
 	return flags
 }
 
@@ -1046,6 +1047,9 @@ func (j *Module) compile(ctx android.ModuleContext, aaptSrcJar android.Path) {
 		ctx.PropertyErrorf("common_srcs", "common_srcs must be .kt files")
 	}
 
+	aidlSrcs := srcFiles.FilterByExt(".aidl")
+	flags.aidlFlags, flags.aidlDeps = j.aidlFlags(ctx, deps.aidlPreprocess, deps.aidlIncludeDirs, aidlSrcs)
+
 	nonGeneratedSrcJars := srcFiles.FilterByExt(".srcjar")
 	srcFiles = j.genSources(ctx, srcFiles, flags)
 

java/droiddoc.go

@@ -314,7 +314,7 @@ func (j *Javadoc) genSources(ctx android.ModuleContext, srcFiles android.Paths,
 	outSrcFiles := make(android.Paths, 0, len(srcFiles))
 	var aidlSrcs android.Paths
 
-	aidlIncludeFlags := genAidlIncludeFlags(srcFiles)
+	aidlIncludeFlags := genAidlIncludeFlags(ctx, srcFiles, android.Paths{})
 
 	for _, srcFile := range srcFiles {
 		switch srcFile.Ext() {

java/gen.go

@@ -15,6 +15,7 @@
 package java
 
 import (
+	"path/filepath"
 	"strconv"
 	"strings"
 
@@ -116,12 +117,31 @@ func genLogtags(ctx android.ModuleContext, logtagsFile android.Path) android.Pat
 	return javaFile
 }
 
-func genAidlIncludeFlags(srcFiles android.Paths) string {
+// genAidlIncludeFlags returns additional include flags based on the relative path
+// of each .aidl file passed in srcFiles. excludeDirs is a list of paths relative to
+// the Android checkout root that should not be included in the returned flags.
+func genAidlIncludeFlags(ctx android.PathContext, srcFiles android.Paths, excludeDirs android.Paths) string {
 	var baseDirs []string
+	excludeDirsStrings := excludeDirs.Strings()
 	for _, srcFile := range srcFiles {
 		if srcFile.Ext() == ".aidl" {
 			baseDir := strings.TrimSuffix(srcFile.String(), srcFile.Rel())
-			if baseDir != "" && !android.InList(baseDir, baseDirs) {
+			baseDir = filepath.Clean(baseDir)
+			baseDirSeen := android.InList(baseDir, baseDirs) || android.InList(baseDir, excludeDirsStrings)
+
+			// For go/bp2build mixed builds, a file may be listed under a
+			// directory in the Bazel output tree that is symlinked to a
+			// directory under the android source tree. We should only
+			// include one copy of this directory so that the AIDL tool
+			// doesn't find multiple definitions of the same AIDL class.
+			// This code comes into effect when filegroups are used in mixed builds.
+			bazelPathPrefix := android.PathForBazelOut(ctx, "").String()
+			bazelBaseDir, err := filepath.Rel(bazelPathPrefix, baseDir)
+			bazelBaseDirSeen := err == nil &&
+				android.InList(bazelBaseDir, baseDirs) ||
+				android.InList(bazelBaseDir, excludeDirsStrings)
+
+			if baseDir != "" && !baseDirSeen && !bazelBaseDirSeen {
 				baseDirs = append(baseDirs, baseDir)
 			}
 		}
@@ -136,8 +156,6 @@ func (j *Module) genSources(ctx android.ModuleContext, srcFiles android.Paths,
 	var protoSrcs android.Paths
 	var aidlSrcs android.Paths
 
-	aidlIncludeFlags := genAidlIncludeFlags(srcFiles)
-
 	for _, srcFile := range srcFiles {
 		switch srcFile.Ext() {
 		case ".aidl":
@@ -168,7 +186,7 @@ func (j *Module) genSources(ctx android.ModuleContext, srcFiles android.Paths,
 				individualFlags[aidlSrc.String()] = flags
 			}
 		}
-		srcJarFiles := genAidl(ctx, aidlSrcs, flags.aidlFlags+aidlIncludeFlags, individualFlags, flags.aidlDeps)
+		srcJarFiles := genAidl(ctx, aidlSrcs, flags.aidlFlags, individualFlags, flags.aidlDeps)
 		outSrcFiles = append(outSrcFiles, srcJarFiles...)
 	}
 

java/java.go

@@ -2259,16 +2259,27 @@ type javaDependencyLabels struct {
 	StaticDeps bazel.LabelListAttribute
 }
 
-// convertLibraryAttrsBp2Build converts a few shared attributes from java_* modules
-// and also separates dependencies into dynamic dependencies and static dependencies.
-// Each corresponding Bazel target type, can have a different method for handling
-// dynamic vs. static dependencies, and so these are returned to the calling function.
 type eventLogTagsAttributes struct {
 	Srcs bazel.LabelListAttribute
 }
 
+type aidlLibraryAttributes struct {
+	Srcs bazel.LabelListAttribute
+}
+
+type javaAidlLibraryAttributes struct {
+	Deps bazel.LabelListAttribute
+}
+
+// convertLibraryAttrsBp2Build converts a few shared attributes from java_* modules
+// and also separates dependencies into dynamic dependencies and static dependencies.
+// Each corresponding Bazel target type, can have a different method for handling
+// dynamic vs. static dependencies, and so these are returned to the calling function.
 func (m *Library) convertLibraryAttrsBp2Build(ctx android.TopDownMutatorContext) (*javaCommonAttributes, *javaDependencyLabels) {
 	var srcs bazel.LabelListAttribute
+	var deps bazel.LabelList
+	var staticDeps bazel.LabelList
+
 	archVariantProps := m.GetArchVariantProperties(ctx, &CommonProperties{})
 	for axis, configToProps := range archVariantProps {
 		for config, _props := range configToProps {
@@ -2282,18 +2293,18 @@ func (m *Library) convertLibraryAttrsBp2Build(ctx android.TopDownMutatorContext)
 	javaSrcPartition := "java"
 	protoSrcPartition := "proto"
 	logtagSrcPartition := "logtag"
+	aidlSrcPartition := "aidl"
 	srcPartitions := bazel.PartitionLabelListAttribute(ctx, &srcs, bazel.LabelPartitions{
 		javaSrcPartition:   bazel.LabelPartition{Extensions: []string{".java"}, Keep_remainder: true},
 		logtagSrcPartition: bazel.LabelPartition{Extensions: []string{".logtags", ".logtag"}},
 		protoSrcPartition:  android.ProtoSrcLabelPartition,
+		aidlSrcPartition:   android.AidlSrcLabelPartition,
 	})
 
 	javaSrcs := srcPartitions[javaSrcPartition]
 
-	var logtagsSrcs bazel.LabelList
 	if !srcPartitions[logtagSrcPartition].IsEmpty() {
 		logtagsLibName := m.Name() + "_logtags"
-		logtagsSrcs = bazel.MakeLabelList([]bazel.Label{{Label: ":" + logtagsLibName}})
 		ctx.CreateBazelTargetModule(
 			bazel.BazelTargetModuleProperties{
 				Rule_class:        "event_log_tags",
@@ -2304,8 +2315,45 @@ func (m *Library) convertLibraryAttrsBp2Build(ctx android.TopDownMutatorContext)
 				Srcs: srcPartitions[logtagSrcPartition],
 			},
 		)
+
+		logtagsSrcs := bazel.MakeLabelList([]bazel.Label{{Label: ":" + logtagsLibName}})
+		javaSrcs.Append(bazel.MakeLabelListAttribute(logtagsSrcs))
+	}
+
+	if !srcPartitions[aidlSrcPartition].IsEmpty() {
+		aidlLibs, aidlSrcs := srcPartitions[aidlSrcPartition].Partition(func(src bazel.Label) bool {
+			return android.IsConvertedToAidlLibrary(ctx, src.OriginalModuleName)
+		})
+
+		if !aidlSrcs.IsEmpty() {
+			aidlLibName := m.Name() + "_aidl_library"
+			ctx.CreateBazelTargetModule(
+				bazel.BazelTargetModuleProperties{
+					Rule_class:        "aidl_library",
+					Bzl_load_location: "//build/bazel/rules/aidl:library.bzl",
+				},
+				android.CommonAttributes{Name: aidlLibName},
+				&aidlLibraryAttributes{
+					Srcs: aidlSrcs,
+				},
+			)
+			aidlLibs.Add(&bazel.LabelAttribute{Value: &bazel.Label{Label: ":" + aidlLibName}})
+		}
+
+		javaAidlLibName := m.Name() + "_java_aidl_library"
+		ctx.CreateBazelTargetModule(
+			bazel.BazelTargetModuleProperties{
+				Rule_class:        "java_aidl_library",
+				Bzl_load_location: "//build/bazel/rules/java:aidl_library.bzl",
+			},
+			android.CommonAttributes{Name: javaAidlLibName},
+			&javaAidlLibraryAttributes{
+				Deps: aidlLibs,
+			},
+		)
+
+		staticDeps.Add(&bazel.Label{Label: ":" + javaAidlLibName})
 	}
-	javaSrcs.Append(bazel.MakeLabelListAttribute(logtagsSrcs))
 
 	var javacopts []string
 	if m.properties.Javacflags != nil {
@@ -2331,14 +2379,10 @@ func (m *Library) convertLibraryAttrsBp2Build(ctx android.TopDownMutatorContext)
 		Javacopts: bazel.MakeStringListAttribute(javacopts),
 	}
 
-	depLabels := &javaDependencyLabels{}
-
-	var deps bazel.LabelList
 	if m.properties.Libs != nil {
 		deps.Append(android.BazelLabelForModuleDeps(ctx, android.LastUniqueStrings(android.CopyOf(m.properties.Libs))))
 	}
 
-	var staticDeps bazel.LabelList
 	if m.properties.Static_libs != nil {
 		staticDeps.Append(android.BazelLabelForModuleDeps(ctx, android.LastUniqueStrings(android.CopyOf(m.properties.Static_libs))))
 	}
@@ -2352,6 +2396,7 @@ func (m *Library) convertLibraryAttrsBp2Build(ctx android.TopDownMutatorContext)
 	// and so this should be a static dependency.
 	staticDeps.Add(protoDepLabel)
 
+	depLabels := &javaDependencyLabels{}
 	depLabels.Deps = bazel.MakeLabelListAttribute(deps)
 	depLabels.StaticDeps = bazel.MakeLabelListAttribute(staticDeps)
 
@@ -2376,7 +2421,7 @@ func javaLibraryBp2Build(ctx android.TopDownMutatorContext, m *Library) {
 			// TODO(b/220869005) remove forced dependency on current public android.jar
 			deps.Add(bazel.MakeLabelAttribute("//prebuilts/sdk:public_current_android_sdk_java_import"))
 		}
-	} else if !depLabels.Deps.IsEmpty() {
+	} else if !deps.IsEmpty() {
 		ctx.ModuleErrorf("Module has direct dependencies but no sources. Bazel will not allow this.")
 	}
 

java/java_test.go

@@ -1747,3 +1747,37 @@ func TestImportMixedBuild(t *testing.T) {
 	android.AssertDeepEquals(t, "Implementation/Resources JARs are produced", expectedOutputFiles, android.NormalizePathsForTesting(javaInfo.ImplementationAndResourcesJars))
 	android.AssertDeepEquals(t, "Implementation JARs are produced", expectedOutputFiles, android.NormalizePathsForTesting(javaInfo.ImplementationJars))
 }
+
+func TestGenAidlIncludeFlagsForMixedBuilds(t *testing.T) {
+	bazelOutputBaseDir := filepath.Join("out", "bazel")
+	result := android.GroupFixturePreparers(
+		PrepareForIntegrationTestWithJava,
+		android.FixtureModifyConfig(func(config android.Config) {
+			config.BazelContext = android.MockBazelContext{
+				OutputBaseDir: bazelOutputBaseDir,
+			}
+		}),
+	).RunTest(t)
+
+	ctx := &android.TestPathContext{TestResult: result}
+
+	srcDirectory := filepath.Join("frameworks", "base")
+	srcDirectoryAlreadyIncluded := filepath.Join("frameworks", "base", "core", "java")
+	bazelSrcDirectory := android.PathForBazelOut(ctx, srcDirectory)
+	bazelSrcDirectoryAlreadyIncluded := android.PathForBazelOut(ctx, srcDirectoryAlreadyIncluded)
+	srcs := android.Paths{
+		android.PathForTestingWithRel(bazelSrcDirectory.String(), "bazelAidl.aidl"),
+		android.PathForTestingWithRel(bazelSrcDirectory.String(), "bazelAidl2.aidl"),
+		android.PathForTestingWithRel(bazelSrcDirectoryAlreadyIncluded.String(), "bazelAidlExclude.aidl"),
+		android.PathForTestingWithRel(bazelSrcDirectoryAlreadyIncluded.String(), "bazelAidl2Exclude.aidl"),
+	}
+	dirsAlreadyIncluded := android.Paths{
+		android.PathForTesting(srcDirectoryAlreadyIncluded),
+	}
+
+	expectedFlags := " -Iout/bazel/execroot/__main__/frameworks/base"
+	flags := genAidlIncludeFlags(ctx, srcs, dirsAlreadyIncluded)
+	if flags != expectedFlags {
+		t.Errorf("expected flags to be %q; was %q", expectedFlags, flags)
+	}
+}

tests/lib.sh

@@ -93,6 +93,7 @@ function create_mock_soong {
   symlink_directory external/go-cmp
   symlink_directory external/golang-protobuf
   symlink_directory external/starlark-go
+  symlink_directory system/tools/aidl
 
   touch "$MOCK_TOP/Android.bp"
 }