nishimia

A fully functional interpreter for a custom language called nishimia, weird name I know. However, its real and does interpret the language below with support for:

• variables and bindings
• data types :
  • integers
  • booleans
  • arrays
  • hash tables
  • null
• functions
• built in functions
• if-conditions
• Closures
• functions are first-class citizens, this means you can pass them as arguments or return them as values,
• error handling out of the box

here is a sinppet of the syntax with all the available features :

var five = 5;
var ten = 10;

var add = func(x, y) {
	return x + y;
};

var added = add(five,ten);

var multiply = func(x, y) {
	return x * y;
};

var value = 10 * 15 + 8 / 7 - 3 * ( 7 + 8); // evaluated as (10 * 15) + (8 / 7) - (3 * (7 + 8))

var multiplied = multiply(five, add(ten,10));

var devide = func(x, y) {
	if y > 0 {
		return x / y;
	} else {
		return 0;
	}
};

var isPositive = func(x) {
	if x >= 0 {
		return true;
	}

	return false;
};

var positive = isPositive(-10);

var isZero = func(x) {
	return x == 0;
};

var isNotZero = func(x) {
	return x != 0;
};

var isNegativeOrZero = func(x) {
	return x <= 0;
};

var max = func(x, y) {
	if x > y {
		return x ;
	}

	if x < y {
		return y ;
	}

	return x;
};


var name = "yassine benaid";
len(name); // len is built in here , and this comment is not supported by the way

var getAdditionClosure = func(x) {
	return func(i) { return x + i;};
};


var additionClosure = getAdditionClosure(2);
additionClosure(5);

var AcceptClosure = func(closure,value){
	return closure(value);
};

AcceptClosure(func(v){
	return v * 15;
},10)

var myArr = [1,2,3,"yassinebenaid"]
myArr[0];
myArr[2+2-1];


var myHash = {
	"name": "yassinebenaid",
	"age": 21,
	"role": func() {
		return "web developer";
	}
};

myHash["name"];
myHash["age"];
myHash["role"]();

Installation && Testing

To get started , clone this repository , then in the project directory run : go build -o nishimia , this will build an executable file named nishimia,

The interpreter comes with a repl out of the box , run ./nishimia with no arguments to get started

To run a source code from a file pass the path as first argument , run ./nishimia path/to/file.ns