Cirru EDN in Nim

Load Cirru EDN in Nim.

Usage

requires "cirru_edn >= 0.4.10"

import cirru_edn

parseCirruEdn("do 1") # gets 1
parseCirruEdn("[] 1 2 3")

let x = genCrEdnList(genCrEdn(1))

echo $x # stringify

type detection:

import cirru_edn

let x = parseCirruEdn("do 1") # gets 1

case x.kind:
of crEdnNil: # ...
of crEdnBool: # ...
of crEdnNumber: # ...
of crEdnKeyword: # ...
of crEdnString: # ...
of crEdnSymbol: # ...
of crEdnVector: # ...
of crEdnList: # ...
of crEdnMap: # ...
of crEdnRecord: # ...

formatToCirru(x) # returns string
formatToCirru(x, true) # turn on useInline option

Functions for generating data:

genCrEdn()
genCrEdn(true)
genCrEdn(1)
genCrEdn("a")
genCrEdnKeyword("k")
genCrEdnSymbol("s")
genCrEdnList(genCrEdn(1), genCrEdn(1))
genCrEdnVector(genCrEdn(1), genCrEdn(1))
genCrEdnSet(genCrEdn(1), genCrEdn(2))
genCrEdnMap(genCrEdnKeyword("a"), genCrEdn(2)) # even number of arguments
genCrEdnRecord("Demo", genCrEdn("a"), genCrEdn(2)) # odd number of arguments, string keys

Syntax

Cirru EDN is based on Cirru Text Syntax, on top of that is some syntax for EDN:

• Lists and vectors:

[] 1 2 3

list 1 2 3

• HashMaps:

{}
  :a 1
  :b 3

• Record:

Record name and record fields are represented in symbols:

%{} Demo
  a 1
  b 2

• Sets:

#{} 1 2 3

• Literals, since Cirru use lines for expressions, need do for extracting a top value:

do 1

do :k

do nil

do 'sym

• Strings, needs to be prefixed with a |(or a single escaped "):

do |short

do "|long text"

• Quoted Cirru code(based on types from Cirru Parser):

{}
  :code $ quote
    def a (x y) (+ x y)

License

MIT