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|
use lib::*;
use ser::{Error, Impossible, Serialize, Serializer};
impl Error for fmt::Error {
fn custom<T: Display>(_msg: T) -> Self {
fmt::Error
}
}
macro_rules! fmt_primitives {
($($f:ident: $t:ty,)*) => {
$(
fn $f(self, v: $t) -> fmt::Result {
Display::fmt(&v, self)
}
)*
};
}
/// ```edition2018
/// use serde::Serialize;
/// use std::fmt::{self, Display};
///
/// #[derive(Serialize)]
/// #[serde(rename_all = "kebab-case")]
/// pub enum MessageType {
/// StartRequest,
/// EndRequest,
/// }
///
/// impl Display for MessageType {
/// fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
/// self.serialize(f)
/// }
/// }
/// ```
impl<'a, 'b> Serializer for &'a mut fmt::Formatter<'b> {
type Ok = ();
type Error = fmt::Error;
type SerializeSeq = Impossible<(), fmt::Error>;
type SerializeTuple = Impossible<(), fmt::Error>;
type SerializeTupleStruct = Impossible<(), fmt::Error>;
type SerializeTupleVariant = Impossible<(), fmt::Error>;
type SerializeMap = Impossible<(), fmt::Error>;
type SerializeStruct = Impossible<(), fmt::Error>;
type SerializeStructVariant = Impossible<(), fmt::Error>;
fmt_primitives! {
serialize_bool: bool,
serialize_i8: i8,
serialize_i16: i16,
serialize_i32: i32,
serialize_i64: i64,
serialize_u8: u8,
serialize_u16: u16,
serialize_u32: u32,
serialize_u64: u64,
serialize_f32: f32,
serialize_f64: f64,
serialize_char: char,
serialize_str: &str,
serialize_unit_struct: &'static str,
}
serde_if_integer128! {
fmt_primitives! {
serialize_i128: i128,
serialize_u128: u128,
}
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> fmt::Result {
Display::fmt(variant, self)
}
fn serialize_newtype_struct<T: ?Sized>(self, _name: &'static str, value: &T) -> fmt::Result
where
T: Serialize,
{
Serialize::serialize(value, self)
}
fn serialize_bytes(self, _v: &[u8]) -> fmt::Result {
Err(fmt::Error)
}
fn serialize_none(self) -> fmt::Result {
Err(fmt::Error)
}
fn serialize_some<T: ?Sized>(self, _value: &T) -> fmt::Result
where
T: Serialize,
{
Err(fmt::Error)
}
fn serialize_unit(self) -> fmt::Result {
Err(fmt::Error)
}
fn serialize_newtype_variant<T: ?Sized>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> fmt::Result
where
T: Serialize,
{
Err(fmt::Error)
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, fmt::Error> {
Err(fmt::Error)
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, fmt::Error> {
Err(fmt::Error)
}
fn serialize_tuple_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleStruct, fmt::Error> {
Err(fmt::Error)
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, fmt::Error> {
Err(fmt::Error)
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, fmt::Error> {
Err(fmt::Error)
}
fn serialize_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeStruct, fmt::Error> {
Err(fmt::Error)
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, fmt::Error> {
Err(fmt::Error)
}
fn collect_str<T: ?Sized>(self, value: &T) -> fmt::Result
where
T: Display,
{
Display::fmt(value, self)
}
}
|
