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Merge pull request #620 from matthiasbeyer/libimagerror/replace-unwraps

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Libimagerror/replace unwraps
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Matthias Beyer 2016-08-05 13:19:18 +02:00 committed by GitHub
commit dd7d7b45ef
1 changed files with 8 additions and 6 deletions
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14
libimagerror/src/trace.rs
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@ -62,10 +62,12 @@ pub fn trace_error_dbg(e: &Error) {
/// processed.
fn print_trace_maxdepth(idx: u64, e: &Error, max: u64) -> Option<&Error> {
if e.cause().is_some() && idx > 0 {
match print_trace_maxdepth(idx - 1, e.cause().unwrap(), max) {
None => write!(stderr(), "\n").ok(),
Some(_) => write!(stderr(), " -- caused:\n").ok(),
};
e.cause().map(|cause| {
match print_trace_maxdepth(idx - 1, cause, max) {
None => write!(stderr(), "\n").ok(),
Some(_) => write!(stderr(), " -- caused:\n").ok(),
};
});
} else {
write!(stderr(), "\n").ok();
}
@ -75,13 +77,13 @@ fn print_trace_maxdepth(idx: u64, e: &Error, max: u64) -> Option<&Error> {
/// Count errors in `Error::cause()` recursively
fn count_error_causes(e: &Error) -> u64 {
1 + if e.cause().is_some() { count_error_causes(e.cause().unwrap()) } else { 0 }
1 + e.cause().map(|c| count_error_causes(c)).unwrap_or(0)
}
fn print_trace_dbg(idx: u64, e: &Error) {
debug!("{}: {}", Red.blink().paint(format!("ERROR[{:>4}]", idx)), e.description());
if e.cause().is_some() {
print_trace_dbg(idx + 1, e.cause().unwrap());
e.cause().map(|c| print_trace_dbg(idx + 1, c));
}
}