mod error;
pub use error::Error;
use alloc::string::ToString;
use ciborium_io::Write;
use ciborium_ll::*;
use serde::{ser, Serialize as _};
struct Serializer<W: Write>(Encoder<W>);
impl<W: Write> From<W> for Serializer<W> {
#[inline]
fn from(writer: W) -> Self {
Self(writer.into())
}
}
impl<W: Write> From<Encoder<W>> for Serializer<W> {
#[inline]
fn from(writer: Encoder<W>) -> Self {
Self(writer)
}
}
impl<'a, W: Write> ser::Serializer for &'a mut Serializer<W>
where
W::Error: core::fmt::Debug,
{
type Ok = ();
type Error = Error<W::Error>;
type SerializeSeq = CollectionSerializer<'a, W>;
type SerializeTuple = CollectionSerializer<'a, W>;
type SerializeTupleStruct = CollectionSerializer<'a, W>;
type SerializeTupleVariant = CollectionSerializer<'a, W>;
type SerializeMap = CollectionSerializer<'a, W>;
type SerializeStruct = CollectionSerializer<'a, W>;
type SerializeStructVariant = CollectionSerializer<'a, W>;
#[inline]
fn serialize_bool(self, v: bool) -> Result<(), Self::Error> {
Ok(self.0.push(match v {
false => Header::Simple(simple::FALSE),
true => Header::Simple(simple::TRUE),
})?)
}
#[inline]
fn serialize_i8(self, v: i8) -> Result<(), Self::Error> {
self.serialize_i64(v.into())
}
#[inline]
fn serialize_i16(self, v: i16) -> Result<(), Self::Error> {
self.serialize_i64(v.into())
}
#[inline]
fn serialize_i32(self, v: i32) -> Result<(), Self::Error> {
self.serialize_i64(v.into())
}
#[inline]
fn serialize_i64(self, v: i64) -> Result<(), Self::Error> {
Ok(self.0.push(match v.is_negative() {
false => Header::Positive(v as u64),
true => Header::Negative(v as u64 ^ !0),
})?)
}
#[inline]
fn serialize_i128(self, v: i128) -> Result<(), Self::Error> {
let (tag, raw) = match v.is_negative() {
false => (tag::BIGPOS, v as u128),
true => (tag::BIGNEG, v as u128 ^ !0),
};
match (tag, u64::try_from(raw)) {
(tag::BIGPOS, Ok(x)) => return Ok(self.0.push(Header::Positive(x))?),
(tag::BIGNEG, Ok(x)) => return Ok(self.0.push(Header::Negative(x))?),
_ => {}
}
let bytes = raw.to_be_bytes();
let mut slice = &bytes[..];
while !slice.is_empty() && slice[0] == 0 {
slice = &slice[1..];
}
self.0.push(Header::Tag(tag))?;
self.0.push(Header::Bytes(Some(slice.len())))?;
Ok(self.0.write_all(slice)?)
}
#[inline]
fn serialize_u8(self, v: u8) -> Result<(), Self::Error> {
self.serialize_u64(v.into())
}
#[inline]
fn serialize_u16(self, v: u16) -> Result<(), Self::Error> {
self.serialize_u64(v.into())
}
#[inline]
fn serialize_u32(self, v: u32) -> Result<(), Self::Error> {
self.serialize_u64(v.into())
}
#[inline]
fn serialize_u64(self, v: u64) -> Result<(), Self::Error> {
Ok(self.0.push(Header::Positive(v))?)
}
#[inline]
fn serialize_u128(self, v: u128) -> Result<(), Self::Error> {
if let Ok(x) = u64::try_from(v) {
return self.serialize_u64(x);
}
let bytes = v.to_be_bytes();
let mut slice = &bytes[..];
while !slice.is_empty() && slice[0] == 0 {
slice = &slice[1..];
}
self.0.push(Header::Tag(tag::BIGPOS))?;
self.0.push(Header::Bytes(Some(slice.len())))?;
Ok(self.0.write_all(slice)?)
}
#[inline]
fn serialize_f32(self, v: f32) -> Result<(), Self::Error> {
self.serialize_f64(v.into())
}
#[inline]
fn serialize_f64(self, v: f64) -> Result<(), Self::Error> {
Ok(self.0.push(Header::Float(v))?)
}
#[inline]
fn serialize_char(self, v: char) -> Result<(), Self::Error> {
self.serialize_str(&v.to_string())
}
#[inline]
fn serialize_str(self, v: &str) -> Result<(), Self::Error> {
let bytes = v.as_bytes();
self.0.push(Header::Text(bytes.len().into()))?;
Ok(self.0.write_all(bytes)?)
}
#[inline]
fn serialize_bytes(self, v: &[u8]) -> Result<(), Self::Error> {
self.0.push(Header::Bytes(v.len().into()))?;
Ok(self.0.write_all(v)?)
}
#[inline]
fn serialize_none(self) -> Result<(), Self::Error> {
Ok(self.0.push(Header::Simple(simple::NULL))?)
}
#[inline]
fn serialize_some<U: ?Sized + ser::Serialize>(self, value: &U) -> Result<(), Self::Error> {
value.serialize(self)
}
#[inline]
fn serialize_unit(self) -> Result<(), Self::Error> {
self.serialize_none()
}
#[inline]
fn serialize_unit_struct(self, _name: &'static str) -> Result<(), Self::Error> {
self.serialize_unit()
}
#[inline]
fn serialize_unit_variant(
self,
_name: &'static str,
_index: u32,
variant: &'static str,
) -> Result<(), Self::Error> {
self.serialize_str(variant)
}
#[inline]
fn serialize_newtype_struct<U: ?Sized + ser::Serialize>(
self,
_name: &'static str,
value: &U,
) -> Result<(), Self::Error> {
value.serialize(self)
}
#[inline]
fn serialize_newtype_variant<U: ?Sized + ser::Serialize>(
self,
name: &'static str,
_index: u32,
variant: &'static str,
value: &U,
) -> Result<(), Self::Error> {
if name != "@@TAG@@" || variant != "@@UNTAGGED@@" {
self.0.push(Header::Map(Some(1)))?;
self.serialize_str(variant)?;
}
value.serialize(self)
}
#[inline]
fn serialize_seq(self, length: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
self.0.push(Header::Array(length))?;
Ok(CollectionSerializer {
encoder: self,
ending: length.is_none(),
tag: false,
})
}
#[inline]
fn serialize_tuple(self, length: usize) -> Result<Self::SerializeTuple, Self::Error> {
self.serialize_seq(Some(length))
}
#[inline]
fn serialize_tuple_struct(
self,
_name: &'static str,
length: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.serialize_seq(Some(length))
}
#[inline]
fn serialize_tuple_variant(
self,
name: &'static str,
_index: u32,
variant: &'static str,
length: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
match (name, variant) {
("@@TAG@@", "@@TAGGED@@") => Ok(CollectionSerializer {
encoder: self,
ending: false,
tag: true,
}),
_ => {
self.0.push(Header::Map(Some(1)))?;
self.serialize_str(variant)?;
self.0.push(Header::Array(Some(length)))?;
Ok(CollectionSerializer {
encoder: self,
ending: false,
tag: false,
})
}
}
}
#[inline]
fn serialize_map(self, length: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
self.0.push(Header::Map(length))?;
Ok(CollectionSerializer {
encoder: self,
ending: length.is_none(),
tag: false,
})
}
#[inline]
fn serialize_struct(
self,
_name: &'static str,
length: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.0.push(Header::Map(Some(length)))?;
Ok(CollectionSerializer {
encoder: self,
ending: false,
tag: false,
})
}
#[inline]
fn serialize_struct_variant(
self,
_name: &'static str,
_index: u32,
variant: &'static str,
length: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
self.0.push(Header::Map(Some(1)))?;
self.serialize_str(variant)?;
self.0.push(Header::Map(Some(length)))?;
Ok(CollectionSerializer {
encoder: self,
ending: false,
tag: false,
})
}
#[inline]
fn is_human_readable(&self) -> bool {
false
}
}
macro_rules! end {
() => {
#[inline]
fn end(self) -> Result<(), Self::Error> {
if self.ending {
self.encoder.0.push(Header::Break)?;
}
Ok(())
}
};
}
struct CollectionSerializer<'a, W: Write> {
encoder: &'a mut Serializer<W>,
ending: bool,
tag: bool,
}
impl<'a, W: Write> ser::SerializeSeq for CollectionSerializer<'a, W>
where
W::Error: core::fmt::Debug,
{
type Ok = ();
type Error = Error<W::Error>;
#[inline]
fn serialize_element<U: ?Sized + ser::Serialize>(
&mut self,
value: &U,
) -> Result<(), Self::Error> {
value.serialize(&mut *self.encoder)
}
end!();
}
impl<'a, W: Write> ser::SerializeTuple for CollectionSerializer<'a, W>
where
W::Error: core::fmt::Debug,
{
type Ok = ();
type Error = Error<W::Error>;
#[inline]
fn serialize_element<U: ?Sized + ser::Serialize>(
&mut self,
value: &U,
) -> Result<(), Self::Error> {
value.serialize(&mut *self.encoder)
}
end!();
}
impl<'a, W: Write> ser::SerializeTupleStruct for CollectionSerializer<'a, W>
where
W::Error: core::fmt::Debug,
{
type Ok = ();
type Error = Error<W::Error>;
#[inline]
fn serialize_field<U: ?Sized + ser::Serialize>(
&mut self,
value: &U,
) -> Result<(), Self::Error> {
value.serialize(&mut *self.encoder)
}
end!();
}
impl<'a, W: Write> ser::SerializeTupleVariant for CollectionSerializer<'a, W>
where
W::Error: core::fmt::Debug,
{
type Ok = ();
type Error = Error<W::Error>;
#[inline]
fn serialize_field<U: ?Sized + ser::Serialize>(
&mut self,
value: &U,
) -> Result<(), Self::Error> {
if !self.tag {
return value.serialize(&mut *self.encoder);
}
self.tag = false;
match value.serialize(crate::tag::Serializer) {
Ok(x) => Ok(self.encoder.0.push(Header::Tag(x))?),
_ => Err(Error::Value("expected tag".into())),
}
}
end!();
}
impl<'a, W: Write> ser::SerializeMap for CollectionSerializer<'a, W>
where
W::Error: core::fmt::Debug,
{
type Ok = ();
type Error = Error<W::Error>;
#[inline]
fn serialize_key<U: ?Sized + ser::Serialize>(&mut self, key: &U) -> Result<(), Self::Error> {
key.serialize(&mut *self.encoder)
}
#[inline]
fn serialize_value<U: ?Sized + ser::Serialize>(
&mut self,
value: &U,
) -> Result<(), Self::Error> {
value.serialize(&mut *self.encoder)
}
end!();
}
impl<'a, W: Write> ser::SerializeStruct for CollectionSerializer<'a, W>
where
W::Error: core::fmt::Debug,
{
type Ok = ();
type Error = Error<W::Error>;
#[inline]
fn serialize_field<U: ?Sized + ser::Serialize>(
&mut self,
key: &'static str,
value: &U,
) -> Result<(), Self::Error> {
key.serialize(&mut *self.encoder)?;
value.serialize(&mut *self.encoder)?;
Ok(())
}
end!();
}
impl<'a, W: Write> ser::SerializeStructVariant for CollectionSerializer<'a, W>
where
W::Error: core::fmt::Debug,
{
type Ok = ();
type Error = Error<W::Error>;
#[inline]
fn serialize_field<U: ?Sized + ser::Serialize>(
&mut self,
key: &'static str,
value: &U,
) -> Result<(), Self::Error> {
key.serialize(&mut *self.encoder)?;
value.serialize(&mut *self.encoder)
}
end!();
}
#[inline]
pub fn into_writer<T: ?Sized + ser::Serialize, W: Write>(
value: &T,
writer: W,
) -> Result<(), Error<W::Error>>
where
W::Error: core::fmt::Debug,
{
let mut encoder = Serializer::from(writer);
value.serialize(&mut encoder)
}