Patrick LeBoutillier wrote:
Hi all,
In the process of writing an SQL parser I started by writing a lexer. The code can be found here: http://hpaste.org/fastcgi/hpaste.fcgi/view?id=4736#a4736
You can run it like this in ghci:
Prelude SQL.Lexer> runLexer "select * from TABLE order by FIELD" [Token Reserved "select",Token Space " ",Token Operator "*",Token Space " ",Token Reserved "from",Token Space " ",Token Identifier "TABLE",Token Space " ",Token Reserved "order",Token Space " ",Token Reserved "by",Token Space " ",Token Identifier "FIELD"]
Since this is pretty much my first Haskell project over 10 lines long, I'm looking for some feedback of any kind. Ultimately I would like to use this lexer to build a functional SQL parser using Parsec.
Thanks,
Patrick
Hi Patrick - I like it! I'm still a Haskell beginner, but even to me, your code seems very clear and easy to understand. I've been thinking of doing some simple parsers too, so I was wondering - may I use this code of yours as a base for them? Well done, and thanks for doing this! - Andy