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;;; ECMAScript for Guile
;; Copyright (C) 2009 Free Software Foundation, Inc.
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;;; Code:
(define-module (language ecmascript impl)
#:use-module (oop goops)
#:use-module (language ecmascript base)
#:use-module (language ecmascript function)
#:use-module (language ecmascript array)
#:re-export (*undefined* *this* call/this*
pget pput pdel has-property?
->boolean ->number
new-object new new-array)
#:export (js-init get-this
typeof
bitwise-not logical-not
shift
mod
band bxor bior
make-enumerator))
(define-class <js-module-object> (<js-object>)
(module #:init-form (current-module) #:init-keyword #:module
#:getter js-module))
(define-method (pget (o <js-module-object>) (p <string>))
(pget o (string->symbol p)))
(define-method (pget (o <js-module-object>) (p <symbol>))
(let ((v (module-variable (js-module o) p)))
(if v
(variable-ref v)
(next-method))))
(define-method (pput (o <js-module-object>) (p <string>) v)
(pput o (string->symbol p) v))
(define-method (pput (o <js-module-object>) (p <symbol>) v)
(module-define! (js-module o) p v))
(define-method (prop-attrs (o <js-module-object>) (p <symbol>))
(cond ((module-local-variable (js-module o) p) '())
((module-variable (js-module o) p) '(DontDelete ReadOnly))
(else (next-method))))
(define-method (prop-attrs (o <js-module-object>) (p <string>))
(prop-attrs o (string->symbol p)))
(define-method (prop-keys (o <js-module-object>))
(append (hash-map->list (lambda (k v) k) (module-obarray (js-module o)))
(next-method)))
;; we could make a renamer, but having obj['foo-bar'] should be enough
(define (js-require modstr)
(make <js-module-object> #:module
(resolve-interface (map string->symbol (string-split modstr #\.)))))
(define-class <js-global-object> (<js-module-object>))
(define-method (js-module (o <js-global-object>))
(current-module))
(define (init-js-bindings! mod)
(module-define! mod 'NaN +nan.0)
(module-define! mod 'Infinity +inf.0)
(module-define! mod 'undefined *undefined*)
(module-define! mod 'require js-require)
;; isNAN, isFinite, parseFloat, parseInt, eval
;; decodeURI, decodeURIComponent, encodeURI, encodeURIComponent
;; Object Function Array String Boolean Number Date RegExp Error EvalError
;; RangeError ReferenceError SyntaxError TypeError URIError
(module-define! mod 'Object *object-prototype*)
(module-define! mod 'Array *array-prototype*))
(define (js-init)
(cond ((get-this))
(else
(fluid-set! *this* (make <js-global-object>))
(init-js-bindings! (current-module)))))
(define (get-this)
(fluid-ref *this*))
(define (typeof x)
(cond ((eq? x *undefined*) "undefined")
((null? x) "object")
((boolean? x) "boolean")
((number? x) "number")
((string? x) "string")
((procedure? x) "function")
((is-a? x <js-object>) "object")
(else "scm")))
(define bitwise-not lognot)
(define (logical-not x)
(not (->boolean (->primitive x))))
(define shift ash)
(define band logand)
(define bxor logxor)
(define bior logior)
(define mod modulo)
(define-method (+ (a <string>) (b <string>))
(string-append a b))
(define-method (+ (a <string>) b)
(string-append a (->string b)))
(define-method (+ a (b <string>))
(string-append (->string a) b))
(define-method (+ a b)
(+ (->number a) (->number b)))
(define-method (- a b)
(- (->number a) (->number b)))
(define-method (* a b)
(* (->number a) (->number b)))
(define-method (/ a b)
(/ (->number a) (->number b)))
(define-method (< a b)
(< (->number a) (->number b)))
(define-method (< (a <string>) (b <string>))
(string< a b))
(define-method (<= a b)
(<= (->number a) (->number b)))
(define-method (<= (a <string>) (b <string>))
(string<= a b))
(define-method (>= a b)
(>= (->number a) (->number b)))
(define-method (>= (a <string>) (b <string>))
(string>= a b))
(define-method (> a b)
(> (->number a) (->number b)))
(define-method (> (a <string>) (b <string>))
(string> a b))
(define (obj-and-prototypes o)
(if o
(cons o (obj-and-prototypes (js-prototype o)))
'()))
(define (make-enumerator obj)
(let ((props (make-hash-table 23)))
(for-each (lambda (o)
(for-each (lambda (k) (hashq-set! props k #t))
(prop-keys o)))
(obj-and-prototypes obj))
(apply new-array (filter (lambda (p)
(not (prop-has-attr? obj p 'DontEnum)))
(hash-map->list (lambda (k v) k) props)))))
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