AVOScript 0.2.0

little language just4fun

AVOScript

little language just for fun

requires python 3.10.x!

Getting Started

Install

git clone https://github.com/ethosa/avoscipt
cd avoscript
pip install requirements.txt

Launch

python avoscript.py -h

flags

• -v/--version AVOScript version

  python avoscript.py -v
  

• -i/--interactive interactive mode

  python avoscript.py -i
  

• -s/--script execute script

  python avoscript.py -s "var a = 1; echo a;"
  

• -f/--file execute code from file

  python avoscript.py -f tests/test_code.avo
  

Available Statements

• built-in types:
  • string

    var s = "My " + "string"
    

  • integer

    var i = 1 + 2 * 5;
    

  • float

    var f = 0.25 / 2.0;
    

  • boolean

    var b = true;
    

  • array

    var arr = [
      0,
      3.14,
      "Hello, world",
      true, [
        "array in other array"
      ]
    ]
    var second_element = arr[1]
    

• if-elif-else

  if false {
    echo(1);
  } elif 3 > 2 and 3 < 2 {
    echo(2);
  } elif 2 > 5 {
    echo(3);
  } else {
    echo(0);
  }
  

• echo-read

  var i = 10;
  echo(1, true, 2 > 3, i;  # separated by " ");
  var input = read("write data here");
  echo input;
  

• while

  var i = 0;
  while i < 10 {
    if i == 2 {
      continue;
    } elif i == 5 {
      break;
    }
    ++i;
  }
  

• for

  for var i = 0; i <= 5; ++i {
    echo("C-like syntax", i)
  }
  for i in [5, "OK", 3.14159, [], false] {
    echo("Python-like syntax", i)
  }
  

• func

  func factorial(num) {
    var i = 1;
    var result = 1;
    while i <= num {
      result *= i;
      ++i;
    }
    return result;
  }
  echo 5, factorial(5);
  
  func kwargs(a, b=3.14159, name="Andrew") {
    echo("arguments is", a, b, name)
  }
  kwargs(0);
  kwargs(0, name="Ethosa");
  

• import

  import MODULE_NAME
  import math
  from module import MyObj, MyObj2
  
  var x = MyObj();
  x::smth();
  
  some_function_from_module();
  pow(...);  # can throw error
  # ok
  math.pow(...);
  MODULE_NAME.pow(...);
  

• switch-case-else

  var i = "hi";
  switch i {
    case 0 {  # i == 0
      echo("... ok");
    }
    case [1, 2, 1023] {  # i in [1, 2, 1023]
      echo("no no no");
    }
    case "hi" {  # i == "hi"
     echo("yes");
    }
    else {}  # otherwise (optionally)
  }
  
  # result from switch case
  var result = switch i {
    case "hi" {"hello, man";}
  }
  echo(result);
  

• ternary operator

  # CONDITION ? TRUE_STMT : FALSE_STMT
  # TRUE_STMT if CONDITION else FALSE_STMT
  var i = 1 > 2 ? "what ..." : "okay";
  echo(i);
  i = "okay" if 2 > 1 else "what ..."
  echo(i);
  

• lambda

  var a = (a) => {
    echo(a, "lambda is cool");
  }
  a(5);
  

• class

  abstract class Animal {
    func say() {
    }
  }
  class Cat : Animal {
    func say() {
      echo("meow");
    }
  }
  class Dog : Animal {
    func say() {
      echo("woof");
    }
  }
  var a1 = Animal();
  var a2 = Cat();
  var a3 = Dog();
  a1::say();
  a2::say();
  a3::say();
  

• interface

  interface Interface {
    func on_failure()
    func on_result()
  }
  interface Animal {
    var color = "black";
    var age = 0;
  }
  
  class MyClass : ParentClass of Interface, Animal {}