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;;; ECMAScript for Guile
;; Copyright (C) 2009 Free Software Foundation, Inc.
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;;
;; This program 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 General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, 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
new-object new new-array)
#:export (js-init get-this
typeof
bitwise-not logical-not
shift
mod
band bxor bior))
(define-class <js-global-object> (<js-object>))
(define-method (pget (o <js-global-object>) (p <string>))
(pget o (string->symbol p)))
(define-method (pget (o <js-global-object>) (p <symbol>))
(let ((v (module-variable (current-module) p)))
(if v
(variable-ref v)
(next-method))))
(define-method (pput (o <js-global-object>) (p <string>) v)
(pput o (string->symbol p) v))
(define-method (pput (o <js-global-object>) (p <symbol>) v)
(module-define! (current-module) p v))
(define-method (prop-attrs (o <js-global-object>) (p <symbol>))
(cond ((module-local-variable (current-module) p)
'())
((module-variable (current-module) p)
'(DontDelete ReadOnly))
(else (next-method))))
(define-method (prop-attrs (o <js-global-object>) (p <string>))
(prop-attrs o (string->symbol p)))
(define (init-js-bindings! mod)
(module-define! mod 'NaN +nan.0)
(module-define! mod 'Infinity +inf.0)
(module-define! mod 'undefined *undefined*)
;; 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)))
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