The sexp package

[ Tags: gpl, language, library, parsing, program ] [ Propose Tags ]

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Properties

Versions 0.5, 0.6, 0.7
Dependencies attoparsec, base (==4.*), bytestring, cmdargs, mtl, syb [details]
License GPL-3
Author Alexandru Scvortov <scvalex@gmail.com>
Maintainer scvalex@gmail.com
Category Language, Parsing
Home page https://github.com/scvalex/sexp
Source repository head: git clone https://github.com/scvalex/sexp.git
Uploaded Tue Feb 12 18:43:53 UTC 2013 by AlexandruScvortov
Distributions NixOS:0.7
Executables sexp
Downloads 1137 total (19 in the last 30 days)
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Readme for sexp-0.5

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sexp

S-Expression parsing/printing made fun and easy

What

sexp provides an S-expression data-type, and printers and parsers that work on all data-types that have Typeable and Data instances.

λ > import Language.Sexp

λ > data MyType = Foo { unFoo :: Int } deriving ( Data, Show, Typeable )

λ > instance Sexpable MyType

λ > toSexp (Foo 23)
List [Atom "Foo",List [Atom "unFoo",Atom "23"]]

λ > printMach (toSexp (Foo 23))
"(Foo (unFoo 23))"

λ > parseExn (printMach (toSexp (Foo 23)))
[List [Atom "Foo",List [Atom "unFoo",Atom "23"]]]

λ > fromSexp (head (parseExn (printMach (toSexp (Foo 23))))) :: Maybe MyType
Just (Foo {unFoo = 23})