Call functions

src/types.h

@@ -118,6 +118,7 @@ typedef struct GroundFunction {
     size_t argSize;
     GroundValueType returnType;
     GroundProgram program;
+    size_t startLine;
 } GroundFunction;
 
 
@@ -142,6 +143,9 @@ GroundValue createListGroundValue(List in);
 // Creates a GroundValue conatining (in), with type FUNCTION.
 GroundValue createFunctionGroundValue(GroundFunction* in);
 
+// Creates a Groundvalue with type NONE.
+GroundValue createNoneGroundValue();
+
 // Creates a deep copy of a GroundValue
 GroundValue copyGroundValue(const GroundValue* gv);