regexlit

Documentation

Overview

Package regexlit defines clover's /regex/ literal syntax: a value bracketed by slashes is a regular expression, anything else is not. It is the single source of truth shared by the directive grammar (which parses and renders such values) and the pattern engine (which compiles them), so the two can never disagree on what counts as a regex.

Index

• Constants
• func Body(s string) (string, bool)
• func Is(s string) bool

Constants

const Delim = '/'

Delim opens and closes a regex literal. Slashes are used for sed/perl familiarity, chosen over a re: prefix.

Functions

func Body

func Body(s string) (string, bool)

Body returns the pattern between a literal's delimiters, leaving any internal escapes intact for the regex engine. ok is false when s is not a complete regex literal.

func Is

func Is(s string) bool

Is reports whether s is a complete regex literal - opened and closed by an unescaped Delim with no unescaped Delim between. A backslash escapes the next character, so /a\/b/ is one literal but /a/b/ is not (and a lone / is a plain slash, not an empty regex).