JackGoldsworth/HwK2

An imperative JVM language created using ANTLR and ASM.

HwK2

An imperative JVM language that I started using Jakub Dziworski's tutorial. However, my language is going in a different direction than the original tutorial, so the end results will be quite different. The goal of this language is not to be used, but for me to learn from.

What can be done:

• Create variables with values and references.
• Do basic math. (add, subtract, divide, and multiply).
• Print using variables and values.
• Functions.
• Loops.
• Control statements.

Goal:

This is up for change, but this is currently how I would like the language to look when I decide to stop working on it.

var test = 4
var arrTest = String<5>

fn add(int: x, int: y) -> int {
    ret x + y
}

var total = add(test, 3)
arrTest<0> = total.toStr()

print(total)

for(i in [0, 4]) {
    print(arrTest<i>)
}

Current Example

var param1 = "Test"
var param2 = 5
var response = testFunc(param1, param2)
print(response)

fn testFunc(String: thing, Int: test) -> String {
    print(thing)
    print(test)
    ret thing
}

Which compiles down to:

 public static void main(java.lang.String[]);
     descriptor: ([Ljava/lang/String;)V
     flags: ACC_PUBLIC, ACC_STATIC
     Code:
       stack=100, locals=3, args_size=1
          0: ldc           #25                 // String \"Test\"
          2: astore_0
          3: bipush        5
          5: istore_1
          6: aload_0
          7: iload_1
          8: invokestatic  #27                 // Method testFunc:(Ljava/lang/String;I)Ljava/lang/String;
         11: astore_2
         12: getstatic     #14                 // Field java/lang/System.out:Ljava/io/PrintStream;
         15: aload_2
         16: invokevirtual #20                 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
         19: return
 
   public static java.lang.String testFunc(java.lang.String, int);
     descriptor: (Ljava/lang/String;I)Ljava/lang/String;
     flags: ACC_PUBLIC, ACC_STATIC
     Code:
       stack=100, locals=2, args_size=2
          0: getstatic     #14                 // Field java/lang/System.out:Ljava/io/PrintStream;
          3: aload_0
          4: invokevirtual #20                 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
          7: getstatic     #14                 // Field java/lang/System.out:Ljava/io/PrintStream;
         10: iload_1
         11: invokevirtual #23                 // Method java/io/PrintStream.println:(I)V
         14: aload_0
         15: areturn