Laid initial nim project structure and fixed a bug with inheritance

JAPL/parser.py

@@ -401,7 +401,10 @@ class Parser(object):
             while True:
                 if len(parameters) >= 255:
                     raise self.throw(self.peek(), "Cannot have more than 255 arguments")
-                parameters.append(self.consume(TokenType.ID, "Expecting parameter name"))
+                parameter = self.consume(TokenType.ID, "Expecting parameter name")
+                if parameter in parameters:
+                    raise self.throw(self.peek(), "Multiple parameters with the same name in function declaration are not allowed")
+                parameters.append(parameter)
                 if not self.match(TokenType.COMMA):
                     break
         self.consume(TokenType.RP, "Unexpected error while parsing function declaration")

JAPL/types/japlclass.py

@@ -17,8 +17,11 @@ class JAPLClass(Callable):
     def get_method(self, name: str):
         if name in self.methods:
             return self.methods[name]
-        elif self.superclass and name in self.superclass.methods:
-            return self.superclass.methods[name]
+        superclass = self.superclass
+        while superclass:
+            if name in superclass.methods:
+                return superclass.methods[name]
+            superclass = superclass.superclass
 
     def __repr__(self):
         return f"<class '{self.name}'>"

examples/fib.jpl

@@ -5,6 +5,8 @@ fun fib(n) {
   return fib(n - 2) + fib(n - 1);
 }
 
-for (var i = 0; i < 20; i = i + 1) {
-  print fib(i);
-}
+
+var start = clock();
+fib(30);
+var end = clock() - start;
+print(end);