orelang is a simple programming language in JSON. (JSONで記述するシンプルなプログラミング言語、orelang)

cd demo
deno run -A ../ore.js ./simple_geo3x3.orelang

import { orelang } from "https://code4fukui.github.io/orelang/orelang.js";

await orelang.run(["call", "https://code4fukui.github.io/orelang/demo/sum.orelang", 10, 20]);

• +, -, *, /, %, =, >, <, <=, >=, &&, ||, !
  • [op, expression1, expression2]
  • operators.
• step
  • ["step", expression, ...]
  • evaluates all given expressions.
  • returns result of evaluation on last expression.
    • novalue is not counted as "last expression".
    • if there's no valid expression evaluation in steps, it will return novalue.
• set
  • ["set", "identifier", expression]
  • variable named identifier will be initialized with value expression. overwrite is allowed.
  • returns evaluated value of expression
• get
  • ["get", "identifier"]
  • retrieves value of variable with the identifier.
• if
  • ["if", cond, on_true, on_false]
• while
  • ["while", condition, expression]
  • evaluates expression while condition is true.
  • returns result of evaluation on last expression.
    • novalue is not counted as "last expression".
    • if there's no valid expression evaluation in while loop, it will return novalue.
• until
  • ["until", condition, expression]
  • evaluates expression until condition is false.
  • returns result of evaluation on last expression.
    • novalue is not counted as "last expression".
    • if there's no valid expression evaluation in while loop, it will return novalue.
• break
• func
  • ["func", "identifier", expression]
• return
• call
  • ["call", "identifier", expression, ...]
• import
  • ["import", "URL or path"]
• print
• push
• pop

• String.charAt
• String.indexOf
• String.length
• String.parseInt
• String.parseFloat

• Math.floor

• Array
• Array.length
• Array.getAt
• Array.setAt

• orelang