JS porth

This is like Porth but implmented in javascript.

Purpose

Porth only supports linux, so this can be run in the broswer so people on all operating systems can see the beauty of Porth.

Future Plans

I plan to make an interactive playground and website for people to try porth in javascript I am going to add more intrinsics such as write_document so people can make websites in porth.

How to run

you can see js_porth in action at https://eulerthedestroyer.github.io/js-porth/ in order to run, clone this repository and then run npm run build-html

Example

If you want to see an example, go to ./src/example.porth That file gets generated into ./generated.js

1 while dup 100 < do
  dup 15 mod 0 = if
    "FizzBuzz" print
  else dup 3 mod 0 = if
    "Fizz" print
  else dup 5 mod 0 = if
    "Buzz" print
  else 
    dup print
  end
  1 +
end drop

let stack = []; 

Array.prototype.lt = function () {
    return this.push(this.pop() > this.pop())
}
Array.prototype.eq = function () {
    return this.push(this.pop() === this.pop())
}
Array.prototype.mod = function () {
    let a = this.pop()
    let b=  this.pop()
    return this.push(b % a )
}
Array.prototype.over = function () {
    let a = this.pop()
    let b = this.pop()
    if (a === undefined || b === undefined) {
        throw new Error("not enough arguments for over intrinsic")
    }
    this.push(b)
    this.push(a)
    this.push(b)
}
Array.prototype.dup = function () {
    let a = this.pop()
    this.push(a)
    this.push(a)
}
Array.prototype.drop = function () {
    this.pop()
}
Array.prototype.plus = function () {
    stack.push(stack.pop() + stack.pop())
}
Array.prototype.print = function () {
    console.log(stack.pop())
}
Array.prototype.swap = function () {
    let a = stack.pop()
    let b = stack.pop()
    if (a === undefined || b === undefined) {
        throw new Error("not enough arguments for swap intrinsic")
    }
    stack.push(a)
    stack.push(b)
}
    stack.push(1);

// while loop
while (
    ((stack) => { stack.dup();
stack.push(100);
stack.lt(); ; return stack.pop() })(stack)) { stack.dup();
stack.push(15);
stack.mod();
stack.push(0);
stack.eq();
if(stack.pop()){stack.push("FizzBuzz");
stack.print()}else{ stack.dup();
stack.push(3);
stack.mod();
stack.push(0);
stack.eq(); if(stack.pop()){stack.push("Fizz");
stack.print()}else{ stack.dup();
stack.push(5);
stack.mod();
stack.push(0);
stack.eq(); if(stack.pop()){stack.push("Buzz");
stack.print()}else{ ; stack.dup();
stack.print()}}};
stack.push(1);
stack.plus() } ;
stack.drop()