Emulate #[serde(transparent)] in serialization (#32)

Author: FSMaxB

CHANGELOG.md

@@ -6,6 +6,9 @@
   * The old macros can be replaced like follows: `int!(42)` -> `Int::from(42_i32)` etc.
 * The `int!` and `uint!` macros now support arbitrary const expressions, not just literals
 * `Int::new` and `UInt::new` are now const
+* Breaking: Serialization of `Int` and `UInt` now call the serialization of `i64` and `u64` directly instead of
+  serializing them as newtype structs, emulating `#[serde(transparent)]`.
+  This doesn't make a difference for `serde_json` for example, but it could make a difference for other serializers
 
 # 0.2.2
 

src/int.rs

@@ -613,7 +613,7 @@ impl Serialize for Int {
     where
         S: Serializer,
     {
-        serializer.serialize_newtype_struct("Int", &self.0)
+        self.0.serialize(serializer)
     }
 }
 

src/uint.rs

@@ -604,7 +604,7 @@ impl Serialize for UInt {
     where
         S: Serializer,
     {
-        serializer.serialize_newtype_struct("UInt", &self.0)
+        self.0.serialize(serializer)
     }
 }
 

tests/int.rs

@@ -13,10 +13,7 @@ fn serialize() {
 }
 
 fn assert_serialize(number: i32) {
-    assert_ser_tokens(
-        &Int::from(number),
-        &[Token::NewtypeStruct { name: "Int" }, Token::I64(number as _)],
-    )
+    assert_ser_tokens(&Int::from(number), &[Token::I64(number as _)])
 }
 
 #[test]

tests/uint.rs

@@ -12,10 +12,7 @@ fn serialize() {
 }
 
 fn assert_serialize(number: u32) {
-    assert_ser_tokens(
-        &UInt::from(number),
-        &[Token::NewtypeStruct { name: "UInt" }, Token::U64(number as _)],
-    )
+    assert_ser_tokens(&UInt::from(number), &[Token::U64(number as _)])
 }
 
 #[test]