preserves/implementations/rust/preserves/src/value/domain.rs

39 lines
1.0 KiB
Rust

use super::BinarySource;
use super::Embeddable;
use super::IOResult;
use super::IOValue;
use super::Reader;
use super::packed::PackedReader;
pub trait DomainDecode<D: Embeddable> {
fn decode_embedded<'de, 'src, S: BinarySource<'de>>(
&mut self,
src: &'src mut S,
read_annotations: bool,
) -> IOResult<D>;
}
pub struct IOValueDomainDecode;
impl DomainDecode<IOValue> for IOValueDomainDecode {
fn decode_embedded<'de, 'src, S: BinarySource<'de>>(
&mut self,
src: &'src mut S,
read_annotations: bool,
) -> IOResult<IOValue> {
PackedReader::new(src, IOValueDomainDecode).demand_next(read_annotations)
}
}
pub struct NoEmbeddedDomainDecode;
impl<D: Embeddable> DomainDecode<D> for NoEmbeddedDomainDecode {
fn decode_embedded<'de, 'src, S: BinarySource<'de>>(
&mut self,
_src: &'src mut S,
_read_annotations: bool,
) -> IOResult<D> {
Err(std::io::Error::new(std::io::ErrorKind::Unsupported, "Embedded values not supported here"))
}
}