132 lines
3.5 KiB
Rust
132 lines
3.5 KiB
Rust
use std::io;
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use super::packed;
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use super::BinarySource;
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use super::BytesBinarySource;
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use super::Embeddable;
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use super::IOValue;
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use super::NestedValue;
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use super::Reader;
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use super::Writer;
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pub trait DomainParse<D: Embeddable> {
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fn parse_embedded(&mut self, v: &IOValue) -> io::Result<D>;
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}
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pub trait DomainDecode<D: Embeddable> {
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fn decode_embedded<'de, 'src, S: BinarySource<'de>>(
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&mut self,
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src: &'src mut S,
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read_annotations: bool,
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) -> io::Result<D>;
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}
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pub trait DomainEncode<D: Embeddable> {
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fn encode_embedded<W: Writer>(&mut self, w: &mut W, d: &D) -> io::Result<()>;
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}
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impl<'a, D: Embeddable, T: DomainParse<D>> DomainParse<D> for &'a mut T {
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fn parse_embedded(&mut self, v: &IOValue) -> io::Result<D> {
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(**self).parse_embedded(v)
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}
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}
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impl<'a, D: Embeddable, T: DomainDecode<D>> DomainDecode<D> for &'a mut T {
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fn decode_embedded<'de, 'src, S: BinarySource<'de>>(
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&mut self,
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src: &'src mut S,
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read_annotations: bool,
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) -> io::Result<D> {
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(**self).decode_embedded(src, read_annotations)
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}
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}
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pub struct DebugDomainEncode;
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impl<D: Embeddable> DomainEncode<D> for DebugDomainEncode {
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fn encode_embedded<W: Writer>(&mut self, w: &mut W, d: &D) -> io::Result<()> {
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d.debug_encode(w)
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}
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}
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pub struct FromStrDomainParse;
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impl<Err: Into<io::Error>, D: Embeddable + std::str::FromStr<Err = Err>> DomainParse<D>
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for FromStrDomainParse
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{
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fn parse_embedded(&mut self, v: &IOValue) -> io::Result<D> {
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Ok(D::from_str(v.value().to_string()?).map_err(|e| e.into())?)
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}
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}
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pub struct IOValueDomainCodec;
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impl DomainDecode<IOValue> for IOValueDomainCodec {
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fn decode_embedded<'de, 'src, S: BinarySource<'de>>(
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&mut self,
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src: &'src mut S,
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read_annotations: bool,
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) -> io::Result<IOValue> {
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packed::PackedReader::new(src, IOValueDomainCodec).demand_next(read_annotations)
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}
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}
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impl DomainEncode<IOValue> for IOValueDomainCodec {
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fn encode_embedded<W: Writer>(&mut self, w: &mut W, d: &IOValue) -> io::Result<()> {
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w.write(self, d)
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}
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}
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pub struct NoEmbeddedDomainCodec;
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impl<D: Embeddable> DomainDecode<D> for NoEmbeddedDomainCodec {
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fn decode_embedded<'de, 'src, S: BinarySource<'de>>(
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&mut self,
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_src: &'src mut S,
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_read_annotations: bool,
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) -> io::Result<D> {
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Err(io::Error::new(
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io::ErrorKind::Unsupported,
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"Embedded values not supported here",
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))
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}
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}
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impl<D: Embeddable> DomainEncode<D> for NoEmbeddedDomainCodec {
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fn encode_embedded<W: Writer>(&mut self, _w: &mut W, _d: &D) -> io::Result<()> {
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Err(io::Error::new(
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io::ErrorKind::Unsupported,
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"Embedded values not supported here",
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))
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}
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}
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pub struct ViaCodec<C>(C);
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impl<C> ViaCodec<C> {
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pub fn new(c: C) -> Self {
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ViaCodec(c)
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}
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}
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impl<D: Embeddable, C: DomainDecode<D>> DomainParse<D> for ViaCodec<C> {
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fn parse_embedded(&mut self, v: &IOValue) -> io::Result<D> {
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let bs = packed::PackedWriter::encode_iovalue(v)?;
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self.0
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.decode_embedded(&mut BytesBinarySource::new(&bs), true)
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}
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}
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impl<D: Embeddable, C: DomainParse<D>> DomainDecode<D> for ViaCodec<C> {
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fn decode_embedded<'de, 'src, S: BinarySource<'de>>(
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&mut self,
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src: &'src mut S,
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read_annotations: bool,
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) -> io::Result<D> {
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let v = src
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.packed(IOValueDomainCodec)
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.demand_next(read_annotations)?;
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self.0.parse_embedded(&v)
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}
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}
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