I do sometimes do something similar, but without the check() function.
The exit points are explicit, it is guaranteed that errors will be
wrapped.
func do(name string) (err error) {
defer PWrapf(&err, "do(%s)", name)
s, err := works(name);
if err != nil {
return err
}
// ...
}
// PWrapf applies Wrapf to an error pointer
func PWrapf(err *error, format string, args ...interface{}) {
*err = errors.Wrapf(*err, format, args...)
}
On Sun, 14 Feb 2021 at 01:45, Michael MacInnis
<[email protected]> wrote:
>
> I've been playing around with reducing error handling boilerplate using
> standard language constructs.
>
> I'm currently doing something that looks like this:
>
> import (
> "github.com/michaelmacinnis/handle"
> )
>
> func do(name string) (err error) {
> check, handle := handle.Errorf(&err, "do(%s)", name); defer handle()
>
> s, err := works(name); check(err)
>
> // ...
> }
>
> Other than the named return value and check being a hidden return, are there
> reasons I would want to avoid doing this? I assume others have tried similar
> things but I haven't stumbled across any similar packages.
>
> Before using it in production I would probably want a linter that checks to
> make sure that the statement after handle.Error or handle.Errorf is defer
> blah, where blah is the name given to the second value returned by those
> functions and that all of this happens at the start of a function.
>
> Michael.
>
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