Aerodlyn Test Scripting Language (ATSL) is an attempt to "create" a scripting language. I was inspired to mess with ANTLR as one of my classes has assignments that work with ANTLR.
So, this is mostly an experiment to implement an object-oriented scripting language. I was originally going to do the implementation in C++ but ANTLR has a somewhat annoying issue where functions must return a type of ANTLR's design, instead of one of my choosing, and working with that and arithmetic operations was rather annoying. So I instead decided to use Java instead.
begin script Fib
begin function f
as int with int x
begin if x <= 1 then
return x
end if
return (call f <- x - 1) + (call f <- x - 2)
end function f
call write <- "The 25th term of the Fibonacci sequence is: ", (call f <- 25)
end script Fib
The above script showcases if-statements, recursion, functions, and printing to the console. The above script also gives an example of one of the limitations of ATSL, that is due to the way functions are called: if there are multiple function calls in an arithmetic expression, they must be surrounded by parentheses (as seen in return (call f <- x - 1) + (call f <- x - 2)). I recommend doing this anyway for readability.
The 'Generate_Sources' and 'Clean' scripts are for development purposes (intelli-sense). Simply remove / comment out the 'Delete unneeded files' execution from 'pom.xml'. Of course, you will need Maven. To compile, run mvn package and run mvn exec:java -Dexec.args="..." where ... is the name of the file to parse, to execute.