jlox

Crafting Interpreters

Install

``sh
yarn global add jlox
`

or

`sh
npm install -g jlox
`

Usage


`sh
jlox --path=
`

Syntax

$3

`
var a = 123;
var b;
b = 223;
var c = "hello world";
`

$3

`
print "hello world";
print 3 * 4;
`

$3

`
var name = "John"; // username
print name;
`

$3

`
(5 + 6) * 10 - 12 / 3;
`

$3

`
var a = 5;
print a * 5;
print "John" + " " + "Doe";
// 25
// John Doe
`

$3

`
var a = 3;
if (a < 4)
print 111;
else
print 222;
// 111
`

$3

`
print "hi" or 2; // "hi".
print nil or "yes"; // "yes".

var a = 3;
if (a > 2 and a == 3)
print("if statement");
else
print("else statement");
// if statement
`

$3


`
var a = 0;
var temp;

for (var b = 1; a < 10000; b = temp + b) {
print a;
temp = a;
a = b;
}
`

$3


`
var a = 1;
while (a < 10) {
print a;
a = a + 1;
}
`

$3

`
fun sayHi(first, last) {
return "Hi, " + first + " " + last + "!";
}

print sayHi("Dear", "Reader"); // Hi, Dear Reader!
`

$3


`
class Breakfast {
cook(something) {
print "cook " + something + ".";
}
}

Breakfast().cook("egg");
`

$3


`

class Doughnut {
cook() {
print "Fry until golden brown.";
}
}

class BostonCream < Doughnut {
cook() {
super.cook();
print "Pipe full of custard and coat with chocolate.";
}
}

BostonCream().cook();
``