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use thiserror::Error;
pub fn to_vec<T: serde::Serialize + ?Sized>(value: &T) -> Result<Vec<u8>, super::Error> {
serde::Serialize::serialize(value, Serializer).map_err(|e| super::Error {
description: e.to_string(),
protocol: crate::CodecProtocol::Raw,
})
}
#[derive(Error, Debug)]
enum Error {
#[error("IPLD kind not supported by the raw codec")]
KindNotSupported,
#[error("i/o error when serializing: {0}")]
Other(String),
}
impl serde::ser::Error for Error {
fn custom<T>(msg: T) -> Self
where
T: std::fmt::Display,
{
Error::Other(msg.to_string())
}
}
struct Serializer;
macro_rules! reject {
($($method:ident $t:ty),*) => {
$(
fn $method(self, _: $t) -> Result<Self::Ok, Self::Error> {
Err(Error::KindNotSupported)
}
)*
};
}
impl serde::ser::Serializer for Serializer {
type Ok = Vec<u8>;
type Error = Error;
type SerializeSeq = serde::ser::Impossible<Vec<u8>, Error>;
type SerializeTuple = serde::ser::Impossible<Vec<u8>, Error>;
type SerializeTupleStruct = serde::ser::Impossible<Vec<u8>, Error>;
type SerializeTupleVariant = serde::ser::Impossible<Vec<u8>, Error>;
type SerializeMap = serde::ser::Impossible<Vec<u8>, Error>;
type SerializeStruct = serde::ser::Impossible<Vec<u8>, Error>;
type SerializeStructVariant = serde::ser::Impossible<Vec<u8>, Error>;
fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok, Self::Error> {
Ok(v.to_owned())
}
reject! {
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
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_some<T: ?Sized>(self, _: &T) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
Err(Error::KindNotSupported)
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_unit_variant(
self,
_: &'static str,
_: u32,
_: &'static str,
) -> Result<Self::Ok, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_newtype_struct<T: ?Sized>(
self,
_: &'static str,
_: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
Err(Error::KindNotSupported)
}
fn serialize_newtype_variant<T: ?Sized>(
self,
_: &'static str,
_: u32,
_: &'static str,
_: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
Err(Error::KindNotSupported)
}
fn serialize_seq(self, _: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_tuple(self, _: usize) -> Result<Self::SerializeTuple, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_tuple_struct(
self,
_: &'static str,
_: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_tuple_variant(
self,
_: &'static str,
_: u32,
_: &'static str,
_: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_map(self, _: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_struct(
self,
_: &'static str,
_: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
Err(Error::KindNotSupported)
}
fn serialize_struct_variant(
self,
_: &'static str,
_: u32,
_: &'static str,
_: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
Err(Error::KindNotSupported)
}
}