package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^
(?#Block)
(?<block>(?:[a-z0-9]+)(?:-[a-z0-9]+)*)
(?:__
(?#Element)
(?<element>(?:[a-z0-9]+)(?:-[a-z0-9]+)*)
)?
(?:--
(?#Modifier)
(?<modifier>(?:[a-z0-9]+)(?:-[a-z0-9]+)*)
)?
$`)
var str = `block__element--modifier`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/