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26 lines
494 B
Go
26 lines
494 B
Go
package errutil
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// type marker for exceptions
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type exception struct {
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error
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}
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// Throw panics with err wrapped properly so that it can be catched by Catch.
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func Throw(err error) {
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panic(exception{err})
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}
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// Catch tries to catch an error thrown by Throw and stop the panic. If the
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// panic is not caused by Throw, the panic is not stopped.
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func Catch(perr *error) {
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r := recover()
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if r == nil {
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return
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}
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if exc, ok := r.(exception); ok {
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*perr = exc.error
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} else {
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panic(r)
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}
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}
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