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Improved out-of-range error messages

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This commit is contained in:
Josh Mitchell
2020-11-15 17:44:49 +11:00
parent 4a71ed001c
commit 2221531f75
2 changed files with 15 additions and 8 deletions
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19
src/errors.rs
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@@ -29,15 +29,15 @@ pub enum Error {
NullInStr(std::ffi::NulError),
CouldNotCheckNAtoms(Box<Error>),
/// Step was out of range for usize on this platform
StepSizeOutOfRange(i32),
StepOutOfRange(i32),
/// natoms was out of range for usize on this platform
NumAtomsOutOfRange(c_int),
/// A numeric cast from `value` failed during `task`
CastToCintFailed {
source: std::num::TryFromIntError,
task: ErrorTask,
value: usize,
},
/// A numeric cast from `value` failed during `task`
NumAtomsOutOfRange(c_int),
}
impl Error {
@@ -137,9 +137,16 @@ impl std::fmt::Display for Error {
CouldNotCheckNAtoms(_err) => {
write!(f, "Failed to read number of atoms in trajectory file")
}
StepSizeOutOfRange(n) | NumAtomsOutOfRange(n) => {
write!(f, "Step {} does not fit in usize on this platform", n)
}
StepOutOfRange(n) => write!(
f,
"Illegal step size while reading trajectory: Failed to cast {} to usize.",
n
),
NumAtomsOutOfRange(n) => write!(
f,
"Illegal number of atoms while reading trajectory: Failed to cast {} to usize.",
n
),
CastToCintFailed { value, task, .. } => write!(
f,
"Numeric cast from {value}:usize to C int failed while {task}",