6 files changed, 69 insertions, 1 deletions

diff --git a/tools/aapt2/ResourceUtils.cpp b/tools/aapt2/ResourceUtils.cpp
index 3623b1112bc6..469128b1e50b 100644
--- a/tools/aapt2/ResourceUtils.cpp
+++ b/tools/aapt2/ResourceUtils.cpp
@@ -800,7 +800,12 @@ std::unique_ptr<Item> ParseBinaryResValue(const ResourceType& type, const Config
       }
 
       // This is a normal reference.
-      return util::make_unique<Reference>(data, ref_type);
+      auto reference = util::make_unique<Reference>(data, ref_type);
+      if (res_value.dataType == android::Res_value::TYPE_DYNAMIC_REFERENCE ||
+          res_value.dataType == android::Res_value::TYPE_DYNAMIC_ATTRIBUTE) {
+        reference->is_dynamic = true;
+      }
+      return reference;
     } break;
   }
 
diff --git a/tools/aapt2/ResourceUtils_test.cpp b/tools/aapt2/ResourceUtils_test.cpp
index c016cb44af00..b08bf9a1ff17 100644
--- a/tools/aapt2/ResourceUtils_test.cpp
+++ b/tools/aapt2/ResourceUtils_test.cpp
@@ -109,6 +109,20 @@ TEST(ResourceUtilsTest, ParsePrivateReference) {
   EXPECT_TRUE(private_ref);
 }
 
+TEST(ResourceUtilsTest, ParseBinaryDynamicReference) {
+  android::Res_value value = {};
+  value.data = util::HostToDevice32(0x01);
+  value.dataType = android::Res_value::TYPE_DYNAMIC_REFERENCE;
+  std::unique_ptr<Item> item = ResourceUtils::ParseBinaryResValue(ResourceType::kId,
+                                                                  android::ConfigDescription(),
+                                                                  android::ResStringPool(), value,
+                                                                  nullptr);
+
+  Reference* ref = ValueCast<Reference>(item.get());
+  EXPECT_TRUE(ref->is_dynamic);
+  EXPECT_EQ(ref->id.value().id, 0x01);
+}
+
 TEST(ResourceUtilsTest, FailToParseAutoCreateNonIdReference) {
   bool create = false;
   bool private_ref = false;
diff --git a/tools/aapt2/Resources.proto b/tools/aapt2/Resources.proto
index 7498e132d943..8a2f5afa7255 100644
--- a/tools/aapt2/Resources.proto
+++ b/tools/aapt2/Resources.proto
@@ -269,6 +269,11 @@ message CompoundValue {
   }
 }
 
+// Message holding a boolean, so it can be optionally encoded.
+message Boolean {
+  bool value = 1;
+}
+
 // A value that is a reference to another resource. This reference can be by name or resource ID.
 message Reference {
   enum Type {
@@ -289,6 +294,9 @@ message Reference {
 
   // Whether this reference is referencing a private resource (@*package:type/entry).
   bool private = 4;
+
+  // Whether this reference is dynamic.
+  Boolean is_dynamic = 5;
 }
 
 // A value that represents an ID. This is just a placeholder, as ID values are used to occupy a
diff --git a/tools/aapt2/format/proto/ProtoDeserialize.cpp b/tools/aapt2/format/proto/ProtoDeserialize.cpp
index efbf636878f2..4cd6e930915d 100644
--- a/tools/aapt2/format/proto/ProtoDeserialize.cpp
+++ b/tools/aapt2/format/proto/ProtoDeserialize.cpp
@@ -634,6 +634,7 @@ static bool DeserializeReferenceFromPb(const pb::Reference& pb_ref, Reference* o
                                        std::string* out_error) {
   out_ref->reference_type = DeserializeReferenceTypeFromPb(pb_ref.type());
   out_ref->private_reference = pb_ref.private_();
+  out_ref->is_dynamic = pb_ref.is_dynamic().value();
 
   if (pb_ref.id() != 0) {
     out_ref->id = ResourceId(pb_ref.id());
diff --git a/tools/aapt2/format/proto/ProtoSerialize.cpp b/tools/aapt2/format/proto/ProtoSerialize.cpp
index e4b3fce52166..d9f6c193fc2f 100644
--- a/tools/aapt2/format/proto/ProtoSerialize.cpp
+++ b/tools/aapt2/format/proto/ProtoSerialize.cpp
@@ -418,6 +418,9 @@ static void SerializeReferenceToPb(const Reference& ref, pb::Reference* pb_ref)
 
   pb_ref->set_private_(ref.private_reference);
   pb_ref->set_type(SerializeReferenceTypeToPb(ref.reference_type));
+  if (ref.is_dynamic) {
+    pb_ref->mutable_is_dynamic()->set_value(ref.is_dynamic);
+  }
 }
 
 template <typename T>
diff --git a/tools/aapt2/format/proto/ProtoSerialize_test.cpp b/tools/aapt2/format/proto/ProtoSerialize_test.cpp
index e7f23302652c..61a8335e17a7 100644
--- a/tools/aapt2/format/proto/ProtoSerialize_test.cpp
+++ b/tools/aapt2/format/proto/ProtoSerialize_test.cpp
@@ -608,4 +608,41 @@ TEST(ProtoSerializeTest, SerializeAndDeserializeOverlayable) {
   ASSERT_FALSE(search_result.value().entry->overlayable_item);
 }
 
+TEST(ProtoSerializeTest, SerializeAndDeserializeDynamicReference) {
+  Reference ref(ResourceId(0x00010001));
+  ref.is_dynamic = true;
+
+  pb::Item pb_item;
+  SerializeItemToPb(ref, &pb_item);
+
+  ASSERT_TRUE(pb_item.has_ref());
+  EXPECT_EQ(pb_item.ref().id(), ref.id.value().id);
+  EXPECT_TRUE(pb_item.ref().is_dynamic().value());
+
+  std::unique_ptr<Item> item = DeserializeItemFromPb(pb_item, android::ResStringPool(),
+                                                     android::ConfigDescription(), nullptr,
+                                                     nullptr, nullptr);
+  Reference* actual_ref = ValueCast<Reference>(item.get());
+  EXPECT_EQ(actual_ref->id.value().id, ref.id.value().id);
+  EXPECT_TRUE(actual_ref->is_dynamic);
+}
+
+TEST(ProtoSerializeTest, SerializeAndDeserializeNonDynamicReference) {
+  Reference ref(ResourceId(0x00010001));
+
+  pb::Item pb_item;
+  SerializeItemToPb(ref, &pb_item);
+
+  ASSERT_TRUE(pb_item.has_ref());
+  EXPECT_EQ(pb_item.ref().id(), ref.id.value().id);
+  EXPECT_FALSE(pb_item.ref().has_is_dynamic());
+
+  std::unique_ptr<Item> item = DeserializeItemFromPb(pb_item, android::ResStringPool(),
+                                                     android::ConfigDescription(), nullptr,
+                                                     nullptr, nullptr);
+  Reference* actual_ref = ValueCast<Reference>(item.get());
+  EXPECT_EQ(actual_ref->id.value().id, ref.id.value().id);
+  EXPECT_FALSE(actual_ref->is_dynamic);
+}
+
 }  // namespace aapt