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use crate::ser::Error;
use serde::ser;
use std::str;
pub struct PartSerializer<S> {
sink: S,
}
impl<S: Sink> PartSerializer<S> {
pub fn new(sink: S) -> Self {
PartSerializer { sink }
}
}
pub trait Sink: Sized {
type Ok;
fn serialize_static_str(
self,
value: &'static str,
) -> Result<Self::Ok, Error>;
fn serialize_str(self, value: &str) -> Result<Self::Ok, Error>;
fn serialize_string(self, value: String) -> Result<Self::Ok, Error>;
fn serialize_none(self) -> Result<Self::Ok, Error>;
fn serialize_some<T: ?Sized + ser::Serialize>(
self,
value: &T,
) -> Result<Self::Ok, Error>;
fn unsupported(self) -> Error;
}
impl<S: Sink> ser::Serializer for PartSerializer<S> {
type Ok = S::Ok;
type Error = Error;
type SerializeSeq = ser::Impossible<S::Ok, Error>;
type SerializeTuple = ser::Impossible<S::Ok, Error>;
type SerializeTupleStruct = ser::Impossible<S::Ok, Error>;
type SerializeTupleVariant = ser::Impossible<S::Ok, Error>;
type SerializeMap = ser::Impossible<S::Ok, Error>;
type SerializeStruct = ser::Impossible<S::Ok, Error>;
type SerializeStructVariant = ser::Impossible<S::Ok, Error>;
fn serialize_bool(self, v: bool) -> Result<S::Ok, Error> {
self.sink
.serialize_static_str(if v { "true" } else { "false" })
}
fn serialize_i8(self, v: i8) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_i16(self, v: i16) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_i32(self, v: i32) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_i64(self, v: i64) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_u8(self, v: u8) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_u16(self, v: u16) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_u32(self, v: u32) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_u64(self, v: u64) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_u128(self, v: u128) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_i128(self, v: i128) -> Result<S::Ok, Error> {
self.serialize_integer(v)
}
fn serialize_f32(self, v: f32) -> Result<S::Ok, Error> {
self.serialize_floating(v)
}
fn serialize_f64(self, v: f64) -> Result<S::Ok, Error> {
self.serialize_floating(v)
}
fn serialize_char(self, v: char) -> Result<S::Ok, Error> {
self.sink.serialize_string(v.to_string())
}
fn serialize_str(self, value: &str) -> Result<S::Ok, Error> {
self.sink.serialize_str(value)
}
fn serialize_bytes(self, value: &[u8]) -> Result<S::Ok, Error> {
match str::from_utf8(value) {
Ok(value) => self.sink.serialize_str(value),
Err(err) => Err(Error::Utf8(err)),
}
}
fn serialize_unit(self) -> Result<S::Ok, Error> {
Err(self.sink.unsupported())
}
fn serialize_unit_struct(self, name: &'static str) -> Result<S::Ok, Error> {
self.sink.serialize_static_str(name)
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> Result<S::Ok, Error> {
self.sink.serialize_static_str(variant)
}
fn serialize_newtype_struct<T: ?Sized + ser::Serialize>(
self,
_name: &'static str,
value: &T,
) -> Result<S::Ok, Error> {
value.serialize(self)
}
fn serialize_newtype_variant<T: ?Sized + ser::Serialize>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<S::Ok, Error> {
Err(self.sink.unsupported())
}
fn serialize_none(self) -> Result<S::Ok, Error> {
self.sink.serialize_none()
}
fn serialize_some<T: ?Sized + ser::Serialize>(
self,
value: &T,
) -> Result<S::Ok, Error> {
self.sink.serialize_some(value)
}
fn serialize_seq(
self,
_len: Option<usize>,
) -> Result<Self::SerializeSeq, Error> {
Err(self.sink.unsupported())
}
fn serialize_tuple(
self,
_len: usize,
) -> Result<Self::SerializeTuple, Error> {
Err(self.sink.unsupported())
}
fn serialize_tuple_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeTuple, Error> {
Err(self.sink.unsupported())
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, Error> {
Err(self.sink.unsupported())
}
fn serialize_map(
self,
_len: Option<usize>,
) -> Result<Self::SerializeMap, Error> {
Err(self.sink.unsupported())
}
fn serialize_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeStruct, Error> {
Err(self.sink.unsupported())
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Error> {
Err(self.sink.unsupported())
}
}
impl<S: Sink> PartSerializer<S> {
fn serialize_integer<I>(self, value: I) -> Result<S::Ok, Error>
where
I: itoa::Integer,
{
let mut buf = itoa::Buffer::new();
let part = buf.format(value);
ser::Serializer::serialize_str(self, part)
}
fn serialize_floating<F>(self, value: F) -> Result<S::Ok, Error>
where
F: ryu::Float,
{
let mut buf = ryu::Buffer::new();
let part = buf.format(value);
ser::Serializer::serialize_str(self, part)
}
}