364 lines
12 KiB
Rust
364 lines
12 KiB
Rust
use serde::Serialize;
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use super::value::writer::Writer;
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use super::value::Encoder;
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pub use super::error::Error;
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type Result<T> = std::result::Result<T, Error>;
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#[derive(Debug)]
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pub struct Serializer<'a, W: Writer> {
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pub write: &'a mut W,
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}
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impl<'a, W: Writer> Serializer<'a, W> {
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pub fn new(write: &'a mut W) -> Self {
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Serializer { write }
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}
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}
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#[derive(Debug)]
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pub struct SerializeCompound<'a, 'b, W: Writer> {
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ser: &'a mut Serializer<'b, W>,
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c: W::Compound,
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}
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#[derive(Debug)]
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pub struct SerializeDictionary<'a, 'b, W: Writer> {
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ser: &'a mut Serializer<'b, W>,
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d: W::Dictionary,
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key_p: Option<W::KeyPointer>,
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}
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impl<'a, 'b, W: Writer> serde::Serializer for &'a mut Serializer<'b, W> {
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type Ok = W::Pointer;
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type Error = Error;
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type SerializeSeq = SerializeCompound<'a, 'b, W>;
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type SerializeTuple = SerializeCompound<'a, 'b, W>;
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type SerializeTupleStruct = SerializeCompound<'a, 'b, W>;
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type SerializeTupleVariant = SerializeCompound<'a, 'b, W>;
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type SerializeMap = SerializeDictionary<'a, 'b, W>;
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type SerializeStruct = SerializeCompound<'a, 'b, W>;
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type SerializeStructVariant = SerializeCompound<'a, 'b, W>;
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fn serialize_bool(self, v: bool) -> Result<Self::Ok> {
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Ok(self.write.write_bool(v)?)
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}
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fn serialize_i8(self, v: i8) -> Result<Self::Ok> {
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Ok(self.write.write_i8(v)?)
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}
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fn serialize_i16(self, v: i16) -> Result<Self::Ok> {
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Ok(self.write.write_i16(v)?)
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}
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fn serialize_i32(self, v: i32) -> Result<Self::Ok> {
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Ok(self.write.write_i32(v)?)
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}
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fn serialize_i64(self, v: i64) -> Result<Self::Ok> {
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Ok(self.write.write_i64(v)?)
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}
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fn serialize_u8(self, v: u8) -> Result<Self::Ok> {
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Ok(self.write.write_u8(v)?)
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}
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fn serialize_u16(self, v: u16) -> Result<Self::Ok> {
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Ok(self.write.write_u16(v)?)
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}
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fn serialize_u32(self, v: u32) -> Result<Self::Ok> {
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Ok(self.write.write_u32(v)?)
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}
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fn serialize_u64(self, v: u64) -> Result<Self::Ok> {
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Ok(self.write.write_u64(v)?)
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}
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fn serialize_f32(self, v: f32) -> Result<Self::Ok> {
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Ok(self.write.write_f32(v)?)
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}
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fn serialize_f64(self, v: f64) -> Result<Self::Ok> {
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Ok(self.write.write_f64(v)?)
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}
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fn serialize_char(self, v: char) -> Result<Self::Ok> {
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let mut c = self.write.start_record(1)?;
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let p = self.write.write_symbol("UnicodeScalar")?;
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self.write.extend_compound(&mut c, p)?;
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let p = self.write.write_u32(v as u32)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(self.write.end_compound(c)?)
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}
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fn serialize_str(self, v: &str) -> Result<Self::Ok> {
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Ok(self.write.write_string(v)?)
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}
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fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok> {
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Ok(self.write.write_bytes(v)?)
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}
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fn serialize_none(self) -> Result<Self::Ok> {
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let mut c = self.write.start_record(0)?;
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let p = self.write.write_symbol("None")?;
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self.write.extend_compound(&mut c, p)?;
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Ok(self.write.end_compound(c)?)
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}
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fn serialize_some<T: ?Sized>(self, v: &T) -> Result<Self::Ok> where T: Serialize {
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let mut c = self.write.start_record(1)?;
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let p = self.write.write_symbol("Some")?;
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self.write.extend_compound(&mut c, p)?;
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let p = v.serialize(&mut *self)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(self.write.end_compound(c)?)
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}
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fn serialize_unit(self) -> Result<Self::Ok> {
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let mut c = self.write.start_record(0)?;
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let p = self.write.write_symbol("tuple")?;
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self.write.extend_compound(&mut c, p)?;
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Ok(self.write.end_compound(c)?)
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}
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fn serialize_unit_struct(self, name: &'static str) -> Result<Self::Ok> {
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let mut c = self.write.start_record(0)?;
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let p = self.write.write_symbol(name)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(self.write.end_compound(c)?)
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}
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fn serialize_unit_variant(self,
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_name: &'static str,
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_variant: u32,
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variant_name: &'static str) ->
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Result<Self::Ok>
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{
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let mut c = self.write.start_record(0)?;
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let p = self.write.write_symbol(variant_name)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(self.write.end_compound(c)?)
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}
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fn serialize_newtype_struct<T: ?Sized>(self, name: &'static str, value: &T) ->
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Result<Self::Ok> where T: Serialize
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{
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match super::value::magic::receive_output_value(name, value) {
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Some(v) => {
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Ok(Encoder::new(self.write).write(&v)?)
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}
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None => {
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// TODO: This is apparently discouraged, and we should apparently just serialize `value`?
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let mut c = self.write.start_record(1)?;
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let p = self.write.write_symbol(name)?;
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self.write.extend_compound(&mut c, p)?;
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let p = value.serialize(&mut *self)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(self.write.end_compound(c)?)
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}
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}
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}
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fn serialize_newtype_variant<T: ?Sized>(self,
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_name: &'static str,
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_variant: u32,
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variant_name: &'static str,
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value: &T) ->
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Result<Self::Ok> where T: Serialize
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{
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let mut c = self.write.start_record(1)?;
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let p = self.write.write_symbol(variant_name)?;
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self.write.extend_compound(&mut c, p)?;
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let p = value.serialize(&mut *self)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(self.write.end_compound(c)?)
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}
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fn serialize_seq(self, count: Option<usize>) -> Result<Self::SerializeSeq> {
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let c = match count {
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Some(n) => self.write.start_sequence(n as u64)?,
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None => match self.write.stream_sequence()? {
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Some(c) => c,
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None => return Err(Error::StreamingSerializationUnsupported),
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}
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};
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Ok(SerializeCompound { ser: self, c })
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}
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fn serialize_tuple(self, count: usize) -> Result<Self::SerializeTuple> {
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let mut c = self.write.start_record(count as u64)?;
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let p = self.write.write_symbol("tuple")?;
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self.write.extend_compound(&mut c, p)?;
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Ok(SerializeCompound { ser: self, c })
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}
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fn serialize_tuple_struct(self, name: &'static str, count: usize) ->
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Result<Self::SerializeTupleStruct>
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{
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let mut c = self.write.start_record(count as u64)?;
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let p = self.write.write_symbol(name)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(SerializeCompound { ser: self, c })
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}
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fn serialize_tuple_variant(self,
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_name: &'static str,
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_variant: u32,
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variant_name: &'static str,
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count: usize) ->
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Result<Self::SerializeTupleVariant>
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{
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let mut c = self.write.start_record(count as u64)?;
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let p = self.write.write_symbol(variant_name)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(SerializeCompound { ser: self, c })
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}
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fn serialize_map(self, count: Option<usize>) -> Result<Self::SerializeMap> {
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let d = match count {
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Some(n) => self.write.start_dictionary(n as u64)?,
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None => match self.write.stream_dictionary()? {
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Some(d) => d,
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None => return Err(Error::StreamingSerializationUnsupported),
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}
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};
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Ok(SerializeDictionary { ser: self, d, key_p: None })
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}
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fn serialize_struct(self, name: &'static str, count: usize) -> Result<Self::SerializeStruct> {
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let mut c = self.write.start_record(count as u64)?;
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let p = self.write.write_symbol(name)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(SerializeCompound { ser: self, c })
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}
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fn serialize_struct_variant(self,
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_name: &'static str,
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_variant: u32,
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variant_name: &'static str,
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count: usize) ->
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Result<Self::SerializeStructVariant>
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{
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let mut c = self.write.start_record(count as u64)?;
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let p = self.write.write_symbol(variant_name)?;
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self.write.extend_compound(&mut c, p)?;
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Ok(SerializeCompound { ser: self, c })
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}
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}
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impl<'a, 'b, W: Writer> serde::ser::SerializeMap for SerializeDictionary<'a, 'b, W> {
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type Ok = W::Pointer;
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type Error = Error;
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fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<()> where T: Serialize {
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let kp1 = key.serialize(&mut *self.ser)?;
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self.key_p = Some(self.ser.write.extend_dictionary_key(&mut self.d, kp1)?);
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Ok(())
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}
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fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<()> where T: Serialize {
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let vp1 = value.serialize(&mut *self.ser)?;
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Ok(self.ser.write.extend_dictionary_value(&mut self.d, self.key_p.take().unwrap(), vp1)?)
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}
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fn end(self) -> Result<Self::Ok> {
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Ok(self.ser.write.end_dictionary(self.d)?)
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}
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}
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impl<'a, 'b, W: Writer> serde::ser::SerializeStruct for SerializeCompound<'a, 'b, W> {
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type Ok = W::Pointer;
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type Error = Error;
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fn serialize_field<T: ?Sized>(&mut self, _name: &'static str, value: &T) -> Result<()>
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where T: Serialize
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{
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let p = value.serialize(&mut *self.ser)?;
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Ok(self.ser.write.extend_compound(&mut self.c, p)?)
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}
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fn end(self) -> Result<Self::Ok> {
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Ok(self.ser.write.end_compound(self.c)?)
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}
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}
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impl<'a, 'b, W: Writer> serde::ser::SerializeStructVariant for SerializeCompound<'a, 'b, W> {
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type Ok = W::Pointer;
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type Error = Error;
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fn serialize_field<T: ?Sized>(&mut self, _name: &'static str, value: &T) -> Result<()>
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where T: Serialize
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{
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let p = value.serialize(&mut *self.ser)?;
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Ok(self.ser.write.extend_compound(&mut self.c, p)?)
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}
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fn end(self) -> Result<Self::Ok> {
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Ok(self.ser.write.end_compound(self.c)?)
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}
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}
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impl<'a, 'b, W: Writer> serde::ser::SerializeTuple for SerializeCompound<'a, 'b, W> {
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type Ok = W::Pointer;
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type Error = Error;
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fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<()> where T: Serialize {
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let p = value.serialize(&mut *self.ser)?;
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Ok(self.ser.write.extend_compound(&mut self.c, p)?)
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}
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fn end(self) -> Result<Self::Ok> {
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Ok(self.ser.write.end_compound(self.c)?)
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}
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}
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impl<'a, 'b, W: Writer> serde::ser::SerializeTupleStruct for SerializeCompound<'a, 'b, W> {
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type Ok = W::Pointer;
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type Error = Error;
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fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<()> where T: Serialize {
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let p = value.serialize(&mut *self.ser)?;
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Ok(self.ser.write.extend_compound(&mut self.c, p)?)
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}
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fn end(self) -> Result<Self::Ok> {
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Ok(self.ser.write.end_compound(self.c)?)
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}
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}
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impl<'a, 'b, W: Writer> serde::ser::SerializeTupleVariant for SerializeCompound<'a, 'b, W> {
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type Ok = W::Pointer;
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type Error = Error;
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fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<()> where T: Serialize {
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let p = value.serialize(&mut *self.ser)?;
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Ok(self.ser.write.extend_compound(&mut self.c, p)?)
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}
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fn end(self) -> Result<Self::Ok> {
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Ok(self.ser.write.end_compound(self.c)?)
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}
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}
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impl<'a, 'b, W: Writer> serde::ser::SerializeSeq for SerializeCompound<'a, 'b, W> {
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type Ok = W::Pointer;
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type Error = Error;
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fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<()> where T: Serialize {
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let p = value.serialize(&mut *self.ser)?;
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Ok(self.ser.write.extend_compound(&mut self.c, p)?)
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}
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fn end(self) -> Result<Self::Ok> {
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Ok(self.ser.write.end_compound(self.c)?)
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}
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}
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pub fn to_writer<W: Writer, T: Serialize>(write: &mut W, value: &T) -> Result<W::Pointer> {
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let mut ser: Serializer<'_, W> = Serializer::new(write);
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value.serialize(&mut ser)
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}
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