package validate

import (
	"regexp"
)

var (
	ErrNoMatch = NewError("invalid format")
)

// Match validates that a string matches a regular expression. Compile the
// expression once with regexp.MustCompile and reuse the returned validator.
func Match(re *regexp.Regexp) func(string) error {
	return func(value string) error {
		if !re.MatchString(value) {
			return ErrNoMatch
		}
		return nil
	}
}