173c0e5ac5
The `data` crate is intended to be used as the manifest serialization
and deserialization format.
This blog post describes the motivation and goals for this crate:
https://rodarmor.com/blog/data
type: added
39 lines
891 B
Rust
39 lines
891 B
Rust
use crate::common::*;
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impl<'a> Data<'a> for u16 {
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const ALIGNMENT: usize = 2;
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const FIXED_SIZE: usize = 2;
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fn load(buffer: &'a [u8]) -> Result<Self> {
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Self::check(buffer)?;
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Ok(u16::from_le_bytes([buffer[0], buffer[1]]))
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}
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fn store(&self, buffer: &mut [u8]) -> Result<()> {
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Self::check(buffer)?;
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let bytes = self.to_le_bytes();
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buffer.copy_from_slice(&bytes);
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Ok(())
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn u16_round_trip() -> Result<()> {
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0u16.round_trip(&Buffer::new::<u16>(&[0, 0]))?;
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1u16.round_trip(&Buffer::new::<u16>(&[1, 0]))?;
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255u16.round_trip(&Buffer::new::<u16>(&[255, 0]))?;
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256u16.round_trip(&Buffer::new::<u16>(&[0, 1]))?;
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u16::max_value().round_trip(&Buffer::new::<u16>(&[0xFF, 0xFF]))?;
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Ok(())
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}
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#[test]
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fn u16_errors() {
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u16::error_test(&mut Buffer::new::<u16>(&[0, 0]));
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}
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}
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