1 year ago

I recently released a new PHP package called "Lexical". It provides a set of attributes and objects to build regular expression based lexers in PHP.

As somebody who enjoys experimenting with parsers and text processing, writing lexers has become a somewhat regular task for me.

Lexical provides a set of attributes that can be added to each case in the enumeration: Regex - accepts a single regular expression.

enum TokenType { #[Regex("[0-9]+")] case Number; #[Literal("+")] case Add; #[Literal("-")] case Subtract; #[Literal("*")] case Multiply; #[Literal("/")] case Divide; }