Use thiserror for error handling with less boilerplate

src/oned/one_d_reader.rs

@@ -125,7 +125,7 @@ pub trait OneDReader: Reader {
             }
         }
 
-        Err(Exceptions::notFound)
+        Err(Exceptions::NOT_FOUND)
     }
 
     /**
@@ -212,7 +212,7 @@ pub fn recordPattern(row: &BitArray, start: usize, counters: &mut [u32]) -> Resu
 
     let end = row.getSize();
     if start >= end {
-        return Err(Exceptions::notFound);
+        return Err(Exceptions::NOT_FOUND);
     }
 
     let mut isWhite = !row.get(start);
@@ -235,7 +235,7 @@ pub fn recordPattern(row: &BitArray, start: usize, counters: &mut [u32]) -> Resu
     // If we read fully the last section of pixels and filled up our counters -- or filled
     // the last counter but ran off the side of the image, OK. Otherwise, a problem.
     if !(counterPosition == numCounters || (counterPosition == numCounters - 1 && i == end)) {
-        return Err(Exceptions::notFound);
+        return Err(Exceptions::NOT_FOUND);
     }
     Ok(())
 }
@@ -253,7 +253,7 @@ pub fn recordPatternInReverse(row: &BitArray, start: usize, counters: &mut [u32]
         }
     }
     if numTransitionsLeft >= 0 {
-        return Err(Exceptions::notFound);
+        return Err(Exceptions::NOT_FOUND);
     }
     recordPattern(row, start + 1, counters)?;