pasukon - Grammar language

home terminal code edit

pasukon is a grammar language created in 2020 by Federico Ramirez.

Source code:

git clone https://github.com/gosukiwi/Pasukon

#947on PLDB

4Years Old

Try now: Web

JavaScript practical parser generator library using combinators

pasukon website
pasukon is developed on GitHub and has 109 stars
pasukon first developed in https://github.com/gosukiwi/Pasukon/issues
Read more about pasukon on the web: 1.

Example from the web:

lex
  match  NUMBER     /[0-9]+(?:\.[0-9]+)?/
  match  PLUS       '+'
  match  MINUS      '-'
  match  TIMES      '*'
  match  DIV        '/'
  match  POPEN      '('
  match  PCLOSE     ')'
  ignore WHITESPACE /^\s+/
/lex

addition
  | (subtraction as :lhs) then :PLUS then (subtraction as :rhs)
  |> 'return $.lhs + $.rhs'
  | subtraction
  ;

subtraction
  | (multiplication as :lhs) then :MINUS then (multiplication as :rhs)
  |> 'return $.lhs - $.rhs'
  | multiplication
  ;

multiplication
  | (division as :lhs) then :TIMES then (division as :rhs)
  |> 'return $.lhs * $.rhs'
  | division
  ;

division
  | (expression as :lhs) then :DIV then (expression as :rhs)
  |> 'return $.lhs / $.rhs'
  | expression
  ;

expression
  | :POPEN then (addition as :expr) then :PCLOSE
  |> 'return $.expr'
  | number
  ;

number
  | :NUMBER 'return +$1'
  ;

start
  | addition
  ;