feat(types): Add a ValueCodec for Uint complex type (#19164)

Co-authored-by: Likhita Polavarapu <78951027+likhita-809@users.noreply.github.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

types/codec_test.go

@@ -10,3 +10,9 @@ import (
 func TestIntValue(t *testing.T) {
 	colltest.TestValueCodec(t, IntValue, math.NewInt(10005994859))
 }
+
+func TestUintValue(t *testing.T) {
+	colltest.TestValueCodec(t, UintValue, math.NewUint(1337))
+	colltest.TestValueCodec(t, UintValue, math.ZeroUint())
+	colltest.TestValueCodec(t, UintValue, math.NewUintFromString("1000000000000000000"))
+}

types/collections.go

@@ -33,6 +33,9 @@ var (
 	// IntValue represents a collections.ValueCodec to work with Int.
 	IntValue collcodec.ValueCodec[math.Int] = intValueCodec{}
 
+	// UintValue represents a collections.ValueCodec to work with Uint.
+	UintValue collcodec.ValueCodec[math.Uint] = uintValueCodec{}
+
 	// TimeKey represents a collections.KeyCodec to work with time.Time
 	// Deprecated: exists only for state compatibility reasons, should not
 	// be used for new storage keys using time. Please use the time KeyCodec
@@ -52,6 +55,11 @@ var (
 	LengthPrefixedBytesKey collcodec.KeyCodec[[]byte] = lengthPrefixedBytesKey{collections.BytesKey}
 )
 
+const (
+	Int  string = "math.Int"
+	Uint string = "math.Uint"
+)
+
 type addressUnion interface {
 	AccAddress | ValAddress | ConsAddress
 	String() string
@@ -198,7 +206,43 @@ func (i intValueCodec) Stringify(value math.Int) string {
 }
 
 func (i intValueCodec) ValueType() string {
-	return "math.Int"
+	return Int
+}
+
+type uintValueCodec struct{}
+
+func (i uintValueCodec) Encode(value math.Uint) ([]byte, error) {
+	return value.Marshal()
+}
+
+func (i uintValueCodec) Decode(b []byte) (math.Uint, error) {
+	v := new(math.Uint)
+	err := v.Unmarshal(b)
+	if err != nil {
+		return math.Uint{}, err
+	}
+	return *v, nil
+}
+
+func (i uintValueCodec) EncodeJSON(value math.Uint) ([]byte, error) {
+	return value.MarshalJSON()
+}
+
+func (i uintValueCodec) DecodeJSON(b []byte) (math.Uint, error) {
+	v := new(math.Uint)
+	err := v.UnmarshalJSON(b)
+	if err != nil {
+		return math.Uint{}, err
+	}
+	return *v, nil
+}
+
+func (i uintValueCodec) Stringify(value math.Uint) string {
+	return value.String()
+}
+
+func (i uintValueCodec) ValueType() string {
+	return Uint
 }
 
 type timeKeyCodec struct{}