Victim is dynamically typed interpreted scripting language written in Haskell. The name is inspired by source code of malloc.

You need Glasgow Haskell Compiler and Cabal to install Victim interpreter on your computer.

cabal install -O2 --overwrite-policy=always 

creates Victim symlink to original binary.

To run Victim interpreter.

Victim main.v

Examples are stored under example folder.

-- this is a single line comment

{-
 this
 is
 a
 multi
 line
 comment
-}

var keyword is used to declare a variable.

var num := null;    -- declare
num := 42           -- assign

-- single line conditional statements doesnt require braces
var cond := true;
if (cond) print( "yeey" );


-- multi line conditional statements require braces
var a  := 2;
var b  := 3;
var op := "add";

if ( op == "add" )
{
    var res := a + b;
    print(res);
}
else if ( op == "mul" )
{
    var res := a * b;
    print(res);
}
else    print( "unknown operation!" );

case statements are clean alternatives of if-else statements. case keyword used to create a case statement, following expression is evaluated once and compared with the values of each when label. If none of them match, otherwise is executed.

var a  := 2;
var b  := 3;
var op := "mul";


case (op)
{
    when "add" =>
    {
        var f := anon x, y -> x + y;
        print( f(a, b) );
    }

    when "mul" =>
    {
        var f := anon x, y -> x * y;
        print( f(a, b) );
    }
    
    otherwise =>
        print("Unknown op!");
}

while and for keywords are used to create loop statements.

while loops in the Victim language contain 2 sections; cond and body.

while cond expression is true, the body block is executed.

[ pseudo ]
while (cond) { statement(s); }

var condition := true;

while (condition)
{
    print( "YES!" );
}

for loops in the Victim language contain 4 sections; init, cond, after and body.

init section is used for the decleration or assignment of variables.

cond section is evaluated before each execution the body. If it is left empty, it's considered as true like in the language of the gods.

after section is evaluated after each execution of the body. It can be empty.

body section contains what will be executed in the loop statement.

[ pseudo ]
for (init; cond; after) { statement(s); }

for (var i := 0; i < 42; i := i + 1)
{
    print( i );
}

following statements are also valid in Victim.

for (;;)
    print( "C is the best!" );

for (;; print("C is the best!"));

-- like the good old C

loops support both continue and break statements.

Named functions can be created with fn keyword.

fn add(a, b)
{
    return a + b;
}

Functions are not required to have return statement. return statement without an expression and functions without return statements return null.

Anonymous functions can be created with the anon keyword. Anonymous functions are expressions, therefore, they need to be assigned to a variable or passed into the function as a parameter.

-- passed
fn apply (f, a, b)
{
    return f(a, b);
}

print( apply(anon x, y -> x**y, 5, 6) );

-- assigned
var f := anon x -> x**2;
print( f(5) );

Please open an issue to discuss what you would like to change.

MIT