Separate hidden API flags needed in sdk snapshots for S and T

Previously, the behavior of the stub_flags and all_flags properties
was different between S and T. In S they contained paths for the
complete set of stub flags and all the encoded flags. However, in T
they contained filtered sets of flags which if used in S would prevent
build checks from detecting possible inconsistencies. Also, a new
signature_patterns property was added in T that is not supported in S.

This change creates separate properties/files for T and reverts the
behavior of the properties/files that were added in S back to how they
behaved in S. The new properties are called filtered_stub_flags and
filtered_flags.

The S and T properties are tagged with the appropriate
supported_build_releases tag to ensure that they are only output when
specifically targeted.

Bug: 197842263
Test: m nothing
Change-Id: Iec8b9c539796c507245b69c0aed980fde6d8694f
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 420489e..5eb7acf 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -5058,8 +5058,9 @@
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -5109,8 +5110,9 @@
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -5238,8 +5240,9 @@
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -5324,8 +5327,9 @@
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -5408,8 +5412,9 @@
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -7441,8 +7446,9 @@
 					annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 					metadata: "my-bootclasspath-fragment/metadata.csv",
 					index: "my-bootclasspath-fragment/index.csv",
-					stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-					all_flags: "my-bootclasspath-fragment/all-flags.csv",
+					signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+					filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+					filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 				},
 			}
 
diff --git a/java/bootclasspath_fragment.go b/java/bootclasspath_fragment.go
index 79c73ca..20bbff3 100644
--- a/java/bootclasspath_fragment.go
+++ b/java/bootclasspath_fragment.go
@@ -767,14 +767,20 @@
 	// The path to the generated index.csv file.
 	Index_path android.OptionalPath
 
-	// The path to the generated signature-patterns.csv file.
-	Signature_patterns_path android.OptionalPath
-
 	// The path to the generated stub-flags.csv file.
-	Stub_flags_path android.OptionalPath
+	Stub_flags_path android.OptionalPath `supported_build_releases:"S"`
 
 	// The path to the generated all-flags.csv file.
-	All_flags_path android.OptionalPath
+	All_flags_path android.OptionalPath `supported_build_releases:"S"`
+
+	// The path to the generated signature-patterns.csv file.
+	Signature_patterns_path android.OptionalPath `supported_build_releases:"T+"`
+
+	// The path to the generated filtered-stub-flags.csv file.
+	Filtered_stub_flags_path android.OptionalPath `supported_build_releases:"T+"`
+
+	// The path to the generated filtered-flags.csv file.
+	Filtered_flags_path android.OptionalPath `supported_build_releases:"T+"`
 }
 
 func (b *bootclasspathFragmentSdkMemberProperties) PopulateFromVariant(ctx android.SdkMemberContext, variant android.Module) {
@@ -793,10 +799,13 @@
 	b.Metadata_path = android.OptionalPathForPath(hiddenAPIInfo.MetadataPath)
 	b.Index_path = android.OptionalPathForPath(hiddenAPIInfo.IndexPath)
 
-	b.Signature_patterns_path = android.OptionalPathForPath(hiddenAPIInfo.SignaturePatternsPath)
 	b.Stub_flags_path = android.OptionalPathForPath(hiddenAPIInfo.StubFlagsPath)
 	b.All_flags_path = android.OptionalPathForPath(hiddenAPIInfo.AllFlagsPath)
 
+	b.Signature_patterns_path = android.OptionalPathForPath(hiddenAPIInfo.SignaturePatternsPath)
+	b.Filtered_stub_flags_path = android.OptionalPathForPath(hiddenAPIInfo.FilteredStubFlagsPath)
+	b.Filtered_flags_path = android.OptionalPathForPath(hiddenAPIInfo.FilteredFlagsPath)
+
 	// Copy stub_libs properties.
 	b.Stub_libs = module.properties.Api.Stub_libs
 	b.Core_platform_stub_libs = module.properties.Core_platform_api.Stub_libs
@@ -861,9 +870,13 @@
 	copyOptionalPath(b.Annotation_flags_path, "annotation_flags")
 	copyOptionalPath(b.Metadata_path, "metadata")
 	copyOptionalPath(b.Index_path, "index")
-	copyOptionalPath(b.Signature_patterns_path, "signature_patterns")
+
 	copyOptionalPath(b.Stub_flags_path, "stub_flags")
 	copyOptionalPath(b.All_flags_path, "all_flags")
+
+	copyOptionalPath(b.Signature_patterns_path, "signature_patterns")
+	copyOptionalPath(b.Filtered_stub_flags_path, "filtered_stub_flags")
+	copyOptionalPath(b.Filtered_flags_path, "filtered_flags")
 }
 
 var _ android.SdkMemberType = (*bootclasspathFragmentMemberType)(nil)
@@ -889,6 +902,12 @@
 
 		// The path to the all-flags.csv file created by the bootclasspath_fragment.
 		All_flags *string `android:"path"`
+
+		// The path to the filtered-stub-flags.csv file created by the bootclasspath_fragment.
+		Filtered_stub_flags *string `android:"path"`
+
+		// The path to the filtered-flags.csv file created by the bootclasspath_fragment.
+		Filtered_flags *string `android:"path"`
 	}
 }
 
@@ -915,7 +934,7 @@
 
 // produceHiddenAPIOutput returns a path to the prebuilt all-flags.csv or nil if none is specified.
 func (module *prebuiltBootclasspathFragmentModule) produceHiddenAPIOutput(ctx android.ModuleContext, contents []android.Module, input HiddenAPIFlagInput) *HiddenAPIOutput {
-	pathForOptionalSrc := func(src *string) android.Path {
+	pathForOptionalSrc := func(src *string, defaultPath android.Path) android.Path {
 		if src == nil {
 			return nil
 		}
@@ -938,13 +957,19 @@
 			AnnotationFlagsPath:   pathForSrc("hidden_api.annotation_flags", module.prebuiltProperties.Hidden_api.Annotation_flags),
 			MetadataPath:          pathForSrc("hidden_api.metadata", module.prebuiltProperties.Hidden_api.Metadata),
 			IndexPath:             pathForSrc("hidden_api.index", module.prebuiltProperties.Hidden_api.Index),
-			SignaturePatternsPath: pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Signature_patterns),
-			StubFlagsPath:         pathForSrc("hidden_api.stub_flags", module.prebuiltProperties.Hidden_api.Stub_flags),
-			AllFlagsPath:          pathForSrc("hidden_api.all_flags", module.prebuiltProperties.Hidden_api.All_flags),
+			SignaturePatternsPath: pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Signature_patterns, nil),
+			// TODO: Temporarily handle stub_flags/all_flags properties until prebuilts have been updated.
+			StubFlagsPath: pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Stub_flags, nil),
+			AllFlagsPath:  pathForOptionalSrc(module.prebuiltProperties.Hidden_api.All_flags, nil),
 		},
+
 		EncodedBootDexFilesByModule: encodedBootDexJarsByModule,
 	}
 
+	// TODO: Temporarily fallback to stub_flags/all_flags properties until prebuilts have been updated.
+	output.FilteredStubFlagsPath = pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Filtered_stub_flags, output.StubFlagsPath)
+	output.FilteredFlagsPath = pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Filtered_flags, output.AllFlagsPath)
+
 	return &output
 }
 
diff --git a/java/hiddenapi_modular.go b/java/hiddenapi_modular.go
index b9a1ca7..f1e30f3 100644
--- a/java/hiddenapi_modular.go
+++ b/java/hiddenapi_modular.go
@@ -548,18 +548,18 @@
 	}
 }
 
-// StubFlagSubset returns a SignatureCsvSubset that contains a path to a stub-flags.csv file and a
-// path to a signature-patterns.csv file that defines a subset of the monolithic stub flags file,
-// i.e. out/soong/hiddenapi/hiddenapi-stub-flags.txt, against which it will be compared.
+// StubFlagSubset returns a SignatureCsvSubset that contains a path to a filtered-stub-flags.csv
+// file and a path to a signature-patterns.csv file that defines a subset of the monolithic stub
+// flags file, i.e. out/soong/hiddenapi/hiddenapi-stub-flags.txt, against which it will be compared.
 func (i *HiddenAPIInfo) StubFlagSubset() SignatureCsvSubset {
-	return SignatureCsvSubset{i.StubFlagsPath, i.SignaturePatternsPath}
+	return SignatureCsvSubset{i.FilteredStubFlagsPath, i.SignaturePatternsPath}
 }
 
-// FlagSubset returns a SignatureCsvSubset that contains a path to an all-flags.csv file and a
+// FlagSubset returns a SignatureCsvSubset that contains a path to a filtered-flags.csv file and a
 // path to a signature-patterns.csv file that defines a subset of the monolithic flags file, i.e.
 // out/soong/hiddenapi/hiddenapi-flags.csv, against which it will be compared.
 func (i *HiddenAPIInfo) FlagSubset() SignatureCsvSubset {
-	return SignatureCsvSubset{i.AllFlagsPath, i.SignaturePatternsPath}
+	return SignatureCsvSubset{i.FilteredFlagsPath, i.SignaturePatternsPath}
 }
 
 var HiddenAPIInfoProvider = blueprint.NewProvider(HiddenAPIInfo{})
@@ -784,9 +784,6 @@
 // HiddenAPIFlagOutput contains paths to output files from the hidden API flag generation for a
 // bootclasspath_fragment module.
 type HiddenAPIFlagOutput struct {
-	// The path to the generated stub-flags.csv file.
-	StubFlagsPath android.Path
-
 	// The path to the generated annotation-flags.csv file.
 	AnnotationFlagsPath android.Path
 
@@ -796,12 +793,21 @@
 	// The path to the generated index.csv file.
 	IndexPath android.Path
 
+	// The path to the generated stub-flags.csv file.
+	StubFlagsPath android.Path
+
 	// The path to the generated all-flags.csv file.
 	AllFlagsPath android.Path
 
 	// The path to the generated signature-patterns.txt file which defines the subset of the
 	// monolithic hidden API files provided in this.
 	SignaturePatternsPath android.Path
+
+	// The path to the generated filtered-stub-flags.csv file.
+	FilteredStubFlagsPath android.Path
+
+	// The path to the generated filtered-flags.csv file.
+	FilteredFlagsPath android.Path
 }
 
 // bootDexJarByModule is a map from base module name (without prebuilt_ prefix) to the boot dex
@@ -1067,11 +1073,13 @@
 	// Store the paths in the info for use by other modules and sdk snapshot generation.
 	output := HiddenAPIOutput{
 		HiddenAPIFlagOutput: HiddenAPIFlagOutput{
-			StubFlagsPath:       filteredStubFlagsCSV,
-			AnnotationFlagsPath: annotationFlagsCSV,
-			MetadataPath:        metadataCSV,
-			IndexPath:           indexCSV,
-			AllFlagsPath:        filteredFlagsCSV,
+			AnnotationFlagsPath:   annotationFlagsCSV,
+			MetadataPath:          metadataCSV,
+			IndexPath:             indexCSV,
+			StubFlagsPath:         stubFlagsCSV,
+			AllFlagsPath:          allFlagsCSV,
+			FilteredStubFlagsPath: filteredStubFlagsCSV,
+			FilteredFlagsPath:     filteredFlagsCSV,
 		},
 		EncodedBootDexFilesByModule: encodedBootDexJarsByModule,
 	}
diff --git a/sdk/bootclasspath_fragment_sdk_test.go b/sdk/bootclasspath_fragment_sdk_test.go
index e1ae474..ff2af43 100644
--- a/sdk/bootclasspath_fragment_sdk_test.go
+++ b/sdk/bootclasspath_fragment_sdk_test.go
@@ -138,8 +138,8 @@
         metadata: "hiddenapi/metadata.csv",
         index: "hiddenapi/index.csv",
         signature_patterns: "hiddenapi/signature-patterns.csv",
-        stub_flags: "hiddenapi/filtered-stub-flags.csv",
-        all_flags: "hiddenapi/filtered-flags.csv",
+        filtered_stub_flags: "hiddenapi/filtered-stub-flags.csv",
+        filtered_flags: "hiddenapi/filtered-flags.csv",
     },
 }
 
@@ -166,8 +166,8 @@
         metadata: "hiddenapi/metadata.csv",
         index: "hiddenapi/index.csv",
         signature_patterns: "hiddenapi/signature-patterns.csv",
-        stub_flags: "hiddenapi/filtered-stub-flags.csv",
-        all_flags: "hiddenapi/filtered-flags.csv",
+        filtered_stub_flags: "hiddenapi/filtered-stub-flags.csv",
+        filtered_flags: "hiddenapi/filtered-flags.csv",
     },
 }
 
@@ -339,8 +339,8 @@
         metadata: "hiddenapi/metadata.csv",
         index: "hiddenapi/index.csv",
         signature_patterns: "hiddenapi/signature-patterns.csv",
-        stub_flags: "hiddenapi/filtered-stub-flags.csv",
-        all_flags: "hiddenapi/filtered-flags.csv",
+        filtered_stub_flags: "hiddenapi/filtered-stub-flags.csv",
+        filtered_flags: "hiddenapi/filtered-flags.csv",
     },
 }
 
@@ -424,8 +424,8 @@
         metadata: "hiddenapi/metadata.csv",
         index: "hiddenapi/index.csv",
         signature_patterns: "hiddenapi/signature-patterns.csv",
-        stub_flags: "hiddenapi/filtered-stub-flags.csv",
-        all_flags: "hiddenapi/filtered-flags.csv",
+        filtered_stub_flags: "hiddenapi/filtered-stub-flags.csv",
+        filtered_flags: "hiddenapi/filtered-flags.csv",
     },
 }
 
@@ -649,8 +649,8 @@
         metadata: "hiddenapi/metadata.csv",
         index: "hiddenapi/index.csv",
         signature_patterns: "hiddenapi/signature-patterns.csv",
-        stub_flags: "hiddenapi/filtered-stub-flags.csv",
-        all_flags: "hiddenapi/filtered-flags.csv",
+        filtered_stub_flags: "hiddenapi/filtered-stub-flags.csv",
+        filtered_flags: "hiddenapi/filtered-flags.csv",
     },
 }
 
@@ -852,8 +852,8 @@
         metadata: "hiddenapi/metadata.csv",
         index: "hiddenapi/index.csv",
         signature_patterns: "hiddenapi/signature-patterns.csv",
-        stub_flags: "hiddenapi/filtered-stub-flags.csv",
-        all_flags: "hiddenapi/filtered-flags.csv",
+        filtered_stub_flags: "hiddenapi/filtered-stub-flags.csv",
+        filtered_flags: "hiddenapi/filtered-flags.csv",
     },
 }
 
diff --git a/sdk/sdk_test.go b/sdk/sdk_test.go
index f5f6898..83294f6 100644
--- a/sdk/sdk_test.go
+++ b/sdk/sdk_test.go
@@ -753,9 +753,8 @@
         annotation_flags: "hiddenapi/annotation-flags.csv",
         metadata: "hiddenapi/metadata.csv",
         index: "hiddenapi/index.csv",
-        signature_patterns: "hiddenapi/signature-patterns.csv",
-        stub_flags: "hiddenapi/filtered-stub-flags.csv",
-        all_flags: "hiddenapi/filtered-flags.csv",
+        stub_flags: "hiddenapi/stub-flags.csv",
+        all_flags: "hiddenapi/all-flags.csv",
     },
 }
 
@@ -781,9 +780,8 @@
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/annotation-flags.csv -> hiddenapi/annotation-flags.csv
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/metadata.csv -> hiddenapi/metadata.csv
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/index.csv -> hiddenapi/index.csv
-.intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/signature-patterns.csv -> hiddenapi/signature-patterns.csv
-.intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/filtered-stub-flags.csv -> hiddenapi/filtered-stub-flags.csv
-.intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/filtered-flags.csv -> hiddenapi/filtered-flags.csv
+.intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/stub-flags.csv -> hiddenapi/stub-flags.csv
+.intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/all-flags.csv -> hiddenapi/all-flags.csv
 .intermediates/mysdklibrary.stubs/android_common/javac/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_api.txt -> sdk_library/public/mysdklibrary.txt
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_removed.txt -> sdk_library/public/mysdklibrary-removed.txt