(unless (or (symbolp x)
(nth-value 1 (valid-js-identifier x))
(and (consp x)
- (member (car x) '(get =))))
+ (member (car x) '(get = property))))
(error "Bad Javascript lvalue ~S" x)))
;;; Process the Javascript AST to reduce some syntax sugar.
(js-expr operand)))))
(js-format ")"))
;; Accessors
+ (property
+ (js-expr (car args))
+ (js-format "[")
+ (js-expr (cadr args))
+ (js-format "]"))
(get
(multiple-value-bind (identifier identifierp)
(valid-js-identifier (car args))
(define-builtin storage-vector-p (x)
(js!bool
- (js!selfcall
- "var x = " x ";"
- "return typeof x === 'object' && 'length' in x;")))
+ (js!selfcall*
+ `(var (x ,x))
+ `(return (and (=== (typeof x) "object") (in "length" x))))))
(define-builtin make-storage-vector (n)
- (js!selfcall
- "var r = [];"
- "r.length = " n ";"
- "return r;" ))
+ (js!selfcall*
+ `(var (r #()))
+ `(= (get r "length") ,n)
+ `(return r)))
(define-builtin storage-vector-size (x)
- `(code ,x ".length"))
+ `(get ,x "length"))
(define-builtin resize-storage-vector (vector new-size)
- `(code "(" ,vector ".length = " ,new-size ")"))
+ `(= (get ,vector "length") ,new-size))
(define-builtin storage-vector-ref (vector n)
- (js!selfcall
- "var x = " "(" vector ")[" n "];"
- "if (x === undefined) throw 'Out of range';"
- "return x;" ))
+ (js!selfcall*
+ `(var (x (get ,vector ,n)))
+ `(if (=== x undefined) (throw "Out of range."))
+ `(return x)))
(define-builtin storage-vector-set (vector n value)
- (js!selfcall
- "var x = " vector ";"
- "var i = " n ";"
- "if (i < 0 || i >= x.length) throw 'Out of range';"
- "return x[i] = " value ";" ))
+ (js!selfcall*
+ `(var (x ,vector))
+ `(var (i ,n))
+ `(if (or (< i 0) (>= i (get x "length")))
+ (throw "Out of range."))
+ `(return (= (property x i) ,value))))
(define-builtin concatenate-storage-vector (sv1 sv2)
- (js!selfcall
- "var sv1 = " sv1 ";"
- "var r = sv1.concat(" sv2 ");"
- "r.type = sv1.type;"
- "r.stringp = sv1.stringp;"
- "return r;" ))
+ (js!selfcall*
+ `(var (sv1 ,sv1))
+ `(var (r (call (get sv1 "concat") ,sv2)))
+ `(= (get r "type") (get sv1 "type"))
+ `(= (get r "stringp") (get sv1 "stringp"))
+ `(return r)))
(define-builtin get-internal-real-time ()
"(new Date()).getTime()")