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

25 lines
681 B
Rust

use super::Embeddable;
use super::IOResult;
use super::IOValue;
pub trait DomainDecode<D: Embeddable> {
fn decode_embedded_iovalue(&mut self, v: IOValue) -> IOResult<D>;
}
pub struct IOValueDomainDecode;
impl DomainDecode<IOValue> for IOValueDomainDecode {
fn decode_embedded_iovalue(&mut self, v: IOValue) -> IOResult<IOValue> {
Ok(v)
}
}
pub struct NoEmbeddedDomainDecode;
impl<D: Embeddable> DomainDecode<D> for NoEmbeddedDomainDecode {
fn decode_embedded_iovalue(&mut self, _v: IOValue) -> IOResult<D> {
Err(std::io::Error::new(std::io::ErrorKind::Unsupported,
"Embedded values not supported here"))
}
}