这个正则表达式是否可以优化（减少匹配步骤）

Question

需要处理的要求：

only ascii letters in lower register [a-z], digits [0-9], "/" and "-"
the string should begin with "/"
"/" and "-" should not stand next to each other nor self in ANY combination 
string must end with a ascii letters in lower register [a-z], digits [0-9] and "/"

到目前为止：

^((?:(?![0-9a-z\/\-]*?(\/|\-)(\/|\-)))\/[0-9a-z\/\-]*?[0-9a-z\/]$)

链接到调试regex debugger

Answer 1

如果我理解你的要求，你可以使用这种模式：

\A/(?>[a-z0-9]+[-/])*[a-z0-9]++/?\z