Add V0 support for floats and doubles

PiperOrigin-RevId: 547503785

rust/test/shared/accessors_test.rs

@@ -40,6 +40,8 @@ fn test_default_accessors() {
     assert_eq!(msg.default_sint64(), 46);
     assert_eq!(msg.default_uint32(), 43);
     assert_eq!(msg.default_uint64(), 44);
+    assert_eq!(msg.default_float(), 51.5);
+    assert_eq!(msg.default_double(), 52000.0);
     assert_eq!(msg.default_bool(), true);
 }
 
@@ -134,6 +136,36 @@ fn test_optional_uint64_accessors() {
     assert_eq!(msg.optional_uint64(), 0);
 }
 
+#[test]
+fn test_optional_float_accessors() {
+    let mut msg = TestAllTypes::new();
+    assert_eq!(msg.optional_float_opt(), None);
+    assert_eq!(msg.optional_float(), 0.0);
+
+    msg.optional_float_set(Some(3.14));
+    assert_eq!(msg.optional_float_opt(), Some(3.14));
+    assert_eq!(msg.optional_float(), 3.14);
+
+    msg.optional_float_set(None);
+    assert_eq!(msg.optional_float_opt(), None);
+    assert_eq!(msg.optional_float(), 0.0);
+}
+
+#[test]
+fn test_optional_double_accessors() {
+    let mut msg = TestAllTypes::new();
+    assert_eq!(msg.optional_double_opt(), None);
+    assert_eq!(msg.optional_double(), 0.0);
+
+    msg.optional_double_set(Some(-10.99));
+    assert_eq!(msg.optional_double_opt(), Some(-10.99));
+    assert_eq!(msg.optional_double(), -10.99);
+
+    msg.optional_double_set(None);
+    assert_eq!(msg.optional_double_opt(), None);
+    assert_eq!(msg.optional_double(), 0.0);
+}
+
 #[test]
 fn test_optional_bool_accessors() {
     let mut msg = TestAllTypes::new();

src/google/protobuf/compiler/rust/accessors/accessors.cc

@@ -55,6 +55,8 @@ std::unique_ptr<AccessorGenerator> AccessorGenerator::For(
     case FieldDescriptor::TYPE_SINT64:
     case FieldDescriptor::TYPE_UINT32:
     case FieldDescriptor::TYPE_UINT64:
+    case FieldDescriptor::TYPE_FLOAT:
+    case FieldDescriptor::TYPE_DOUBLE:
     case FieldDescriptor::TYPE_BOOL:
       if (field.desc().is_repeated()) return nullptr;
       return ForSingularScalar(field);

src/google/protobuf/compiler/rust/naming.cc

@@ -122,6 +122,10 @@ absl::string_view PrimitiveRsTypeName(Context<FieldDescriptor> field) {
       return "u32";
     case FieldDescriptor::TYPE_UINT64:
       return "u64";
+    case FieldDescriptor::TYPE_FLOAT:
+      return "f32";
+    case FieldDescriptor::TYPE_DOUBLE:
+      return "f64";
     case FieldDescriptor::TYPE_BYTES:
       return "&[u8]";
     default:
@@ -143,6 +147,8 @@ bool IsSupportedFieldType(Context<FieldDescriptor> field) {
           field.desc().type() == FieldDescriptor::TYPE_SINT64 ||
           field.desc().type() == FieldDescriptor::TYPE_UINT32 ||
           field.desc().type() == FieldDescriptor::TYPE_UINT64 ||
+          field.desc().type() == FieldDescriptor::TYPE_FLOAT ||
+          field.desc().type() == FieldDescriptor::TYPE_DOUBLE ||
           field.desc().type() == FieldDescriptor::TYPE_BYTES);
 }