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improve error handling

This commit is contained in:
mos 2024-10-10 14:31:07 +02:00
parent f34c06758f
commit ea962dc8cf
1 changed files with 9 additions and 5 deletions
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14
src/lib.rs
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@ -7,7 +7,9 @@ pub enum ReadError {
pub enum Error { pub enum Error {
Read(ReadError), Read(ReadError),
BadParam(String), BadPopSize,
BadMut,
BadCrossRatio,
BadMove(Pos), BadMove(Pos),
} }
@ -71,7 +73,9 @@ impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self { match self {
Error::Read(e) => write!(f, "{e}"), Error::Read(e) => write!(f, "{e}"),
Error::BadParam(s) => write!(f, "{s}"), Error::BadPopSize => write!(f, "population size cannot be 0"),
Error::BadMut => write!(f, "mutation length too large"),
Error::BadCrossRatio => write!(f, "crossover ratio cannot be 0"),
Error::BadMove(pos) => write!(f, "invalid move ({pos})"), Error::BadMove(pos) => write!(f, "invalid move ({pos})"),
} }
} }
@ -511,15 +515,15 @@ pub fn run(config: Config, rle: Option<String>) -> Result<(), Error> {
.unwrap(); .unwrap();
if config.pop_size == 0 { if config.pop_size == 0 {
return Err(Error::BadParam("population size cannot be 0".into())); return Err(Error::BadPopSize);
} }
if config.mut_max > config.dna_size { if config.mut_max > config.dna_size {
return Err(Error::BadParam("mutation length too large".into())); return Err(Error::BadMut);
} }
if config.cross_ratio == 0 { if config.cross_ratio == 0 {
return Err(Error::BadParam("crossover ratio cannot be 0".into())); return Err(Error::BadCrossRatio);
} }
let map = if let Some(rle) = rle { let map = if let Some(rle) = rle {