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sexp: S-Expression parsing/printing made fun and easy

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

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Versions [RSS] 0.5, 0.6, 0.7
Dependencies attoparsec, base (>=4 && <5), bytestring, cmdargs, mtl, syb [details]
License GPL-3.0-only
Author Alexandru Scvortov <scvalex@gmail.com>
Maintainer scvalex@gmail.com
Category Language, Parsing
Home page https://github.com/scvalex/sexp
Source repo head: git clone https://github.com/scvalex/sexp.git
Uploaded by AlexandruScvortov at 2013-02-12T18:43:53Z
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Reverse Dependencies 1 direct, 0 indirect [details]
Executables sexp
Downloads 2739 total (10 in the last 30 days)
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Status Docs uploaded by user
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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})