lowest precedence, and all reporters should have 10 as the precedence.
The possible values for ARG are :agentset, :boolean, :number, :command-block,
- or t for wildcard.
+ :string, or t for wildcard. For optional arguments, ARG can be a list of the form
+ (ARG :optional) where ARG is one of the aforementioned values.
The need for a parser between the lexer and the transpiler is because NetLogo
needs two passes to turn into something that can be used. This is the only entry
(error "Can't have a prim that wants a token and has a precedence of less than 20: ~A" prim))
(let*
((args (if (prim-is-infix prim) (cdr (prim-args prim)) (prim-args prim)))
- (half-parsed-remainder (parse-internal (cdr lexed-ast) :remaining-args (append args (list :done-with-args))))
+ (half-parsed-remainder
+ (parse-internal (cdr lexed-ast) :remaining-args (append args (list :done-with-args))))
(breakpoint (or
(position-if (lambda (form) (or (not (listp form)) (not (eql :arg (car form))))) half-parsed-remainder)
(length half-parsed-remainder)))
(already-parsed-limbo-forms
(subseq half-parsed-remainder breakpoint (min (length args) (length half-parsed-remainder))))
+ (num-optional-forms (- (length args) breakpoint))
(middle-forms
(cons
(if
(prim-is-infix prim)
- (reconfigure-due-to-precedence prev-item prim (mapcar #'cadr (subseq half-parsed-remainder 0 breakpoint)))
+ ; There's a potential bug here about infix operators with optional forms, where the first item is optional
+ ; I don't consider that super likely though...
+ (append
+ (reconfigure-due-to-precedence prev-item prim (mapcar #'cadr (subseq half-parsed-remainder 0 breakpoint)))
+ (loop :repeat num-optional-forms :collect :optional))
(cons
(prim-name prim)
- (mapcar #'cadr (subseq half-parsed-remainder 0 breakpoint))))
- already-parsed-limbo-forms)))
+ (append
+ (mapcar #'cadr (subseq half-parsed-remainder 0 breakpoint))
+ (loop :repeat num-optional-forms :collect :optional)))) ; we save the place for optionals for the transpiler
+ already-parsed-limbo-forms)));)
+ (let
+ ((arg-at-bp (nth breakpoint args)))
+ (when (and arg-at-bp (or (not (listp arg-at-bp)) (not (find :optional arg-at-bp))))
+ (error "Stopped collecting arguments, but non optional arguments remain")))
(append
(butlast middle-forms)
(parse-internal
(defprim :green () 10)
(defprim :white () 10)
+; booleans
+(defprim :true () 10)
+(defprim :false () 10)
+
(defstructureprim :globals)
(defstructureprim :breed)
(defstructureprim :turtles-own)