On 2013-10-23 23:15:28 -0500, Gregory Gelfond wrote: > I would like to develop a simple compiler for a declarative language in > Racket (as a personal project), and am at a bit of a loss as to how to > proceed with respect to how to process text in Racket. What is the > standard means of reading a sequence of string (or characters) from a > file?
Depending on how you plan to process the input, there are several functions you can choose from. Most of them are documented here: http://docs.racket-lang.org/reference/Byte_and_String_Input.html In particular, you may want to look at `read-line`, `read-string`, `port->string`. These functions are generic over ports (you'll probably want to make an input file port using `open-input-file`). > Also, I'm coming from Python, and was wondering if there was anything > similar to the LEPL library available for Racket. The basic idea is that > the library provides a syntax similar to EBNF syntax allowing me to > declare the grammar, and then generates a parser for me, whose function > interface is defined by the nonterminal symbols of the grammar. Danny Yoo's "ragg" library might be what you're looking for: http://hashcollision.org/ragg/ Cheers, Asumu ____________________ Racket Users list: http://lists.racket-lang.org/users
