sexpression

s-expression parser

npm install sexpression
8 downloads in the last week
16 downloads in the last month

Installation

npm install sexpression

Usage

var sexpression = require('sexpression');
sexpression.parse('()')
//=> null

sexpression.parse('(1 -2 3.45)')      
//=> [1, -2, 3.45]

sexpression.parse('(a b c)')          
//=> [{ name: 'a' }, { name: 'b' }, { name: 'c' }]

sexpression.parse('(a b (1 2) "a")')  
//=> [{ name: 'a' }, { name: 'b' }, [1, 2], 'a']

sexpression.parse('(:hoge 1 :fuga 2)')
//=> { hoge: 1, fuga: 2 }

sexpression.parse('(a b :hoge 1 :fuga 2 c)')
//=> [{ name: 'a' }, { name: 'b'}, { hoge: 1, fuga: 2 }, { name: c }]

sexpression.parse('(1 . 2)')
//=> { car: 1, cdr: 2 }

sexpression.parse('((hoge . 1) (fuga . 2))')
//=> [{ car: { name: 'hoge'}, cdr: 1}, { car: { name: 'fuga' }, cdr: 2 }]
sexpression.stringify([]);           
//=> 'nil'

sexpression.stringify([1, -2, 3.45]) 
//=> '(1 -2 3.45)'

sexpression.stringify([{ name: 'a' }, { name: 'b' }, [1, 2], 'a']) 
//=> '(a b (1 2) "a")'

sexpression.stringify({ car: 1, cdr: 2})  
//=> '(1 . 2)'

sexpression.stringify([{ car: { name: 'hoge'}, cdr: 1}, { car: { name: 'fuga' }, cdr: 2 }])  
//=> '((hoge . 1) (fuga . 2))'

sexpression.stringify({ a: 1, b: 2})                     
//=> '(:a 1 :b 2)'

sexpression.stringify([1, { hoge: 1, fuga: 2 }, "aaa"])  
//=> '(1 (:hoge 1 :fuga 2) "aaa")'

sexpression.stringify({ a: 1, b: 2}, 'alist') 
//=> '(("a" . 1) ("b" . 2))'

sexpression.stringify([1, { hoge: 1, fuga: 2 }, "aaa"], 'alist') 
//=> '(1 (('hoge' . 1) ('fuga' . 2)) 'aaa')'
sexpression.parse('hoge')  //=> { name: 'hoge' }
sexpression.parse('hoge') instanceof sexpression.Symbol  //=> true
sexpression.parse('hoge') === sexpression.parse('hoge')  //=> true
npm loves you