regexp/syntax: Enable hand crafted regexp/syntax.Regexp being compiled into a regexp.Regex #18888
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Comments
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#14078 has a previous rejected proposal to add a Compile func to regexp. |
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Also, there's a workaround: https://play.golang.org/p/nQUihJnWOj |
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So, shouldn't be clear in the docs that its usage is discouraged? |
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It's not discouraged. We just don't expect people will want to use it so we don't promote it. |
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What version of Go are you using (
go version)?1.8
What operating system and processor architecture are you using (
go env)?NA
What did you do?
I was trying to make an utility library like https://github.com/Miserlou/easy-expressions to
return a Go regexp but I could not use the syntax types defined in the public pkg regexp/syntax
The intended was to have an API like
where
reis a*regexp.Regexpthat matches "+\d.+\d"What did you expect to see?
A function to Compile a crafted syntax.Regexp
What did you see instead?
No easy way to do that
Proposal
I could see no easy way to implement it, but most of the required machinery is already in regexp module source.
Is it possible to introduce the function
func CompileRegexp(expr syntax.Regexp) (*Regexp, error)in the 1.9 API?The text was updated successfully, but these errors were encountered: