Method init

internal/re/regexp.go:58–97

()

}

func (this *Regexp) init() {
	this.id = atomic.AddUint64(&lastId, 1)
	this.idString = "re:" + types.String(this.id)

	if len(this.exp) == 0 {
		return
	}

	var exp = strings.TrimSpace(this.exp)

	// 去掉前面的(?...)
	if prefixReg.MatchString(exp) {
		var matches = prefixReg.FindStringSubmatch(exp)
		var modifiers = matches[1]
		if strings.Contains(modifiers, "i") {
			this.isCaseInsensitive = true
		}
		exp = exp[len(matches[0]):]
	}

	var keywords = this.ParseKeywords(exp)

	var filteredKeywords = []string{}
	var minLength = 1
	var isValid = true
	for _, keyword := range keywords {
		if len(keyword) <= minLength {
			isValid = false
			break
		}
	}
	if isValid {
		filteredKeywords = keywords
	}

	this.keywords = filteredKeywords
	if len(filteredKeywords) > 0 {
		this.keywordsMap = NewRuneTree(filteredKeywords)
	}
}

func (this *Regexp) Keywords() []string {
	return this.keywords