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e80ce73d20
* module/language/Makefile.am: * module/language/ecmascript/impl.scm: * module/language/ecmascript/array.scm: * module/language/ecmascript/base.scm: * module/language/ecmascript/function.scm: Split out the runtime into different files. Implement more of the spec's runtime.
81 lines
2.8 KiB
Scheme
81 lines
2.8 KiB
Scheme
;;; ECMAScript for Guile
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;; Copyright (C) 2009 Free Software Foundation, Inc.
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; see the file COPYING. If not, write to
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;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(define-module (language ecmascript function)
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#:use-module (oop goops)
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#:use-module (language ecmascript base)
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#:export (*function-prototype* *program-wrappers* new))
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(define-class <js-program-wrapper> (<js-object>))
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(define *program-wrappers* (make-doubly-weak-hash-table 31))
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(define *function-prototype* (make <js-object> #:class "Function"
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#:value (lambda args *undefined*)))
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(define-js-method *function-prototype* (toString)
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(format #f "~A" (js-value this)))
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(define-js-method *function-prototype* (apply this-arg array)
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(cond ((or (null? array) (eq? array *undefined*))
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(call/this this-arg (js-value this)))
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((is-a? array <js-array-object>)
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(call/this this-arg
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(lambda ()
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(apply (js-value this)
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(vector->list (js-array-vector array))))))
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(else
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(throw 'TypeError 'apply array))))
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(define-js-method *function-prototype* (call this-arg . args)
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(call/this this-arg
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(lambda ()
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(apply (js-value this) args))))
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(define-method (pget (o <applicable>) p)
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(let ((wrapper (hashq-ref *program-wrappers* o)))
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(if wrapper
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(pget wrapper p)
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(pget *function-prototype* p))))
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(define-method (pput (o <applicable>) p v)
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(let ((wrapper (hashq-ref *program-wrappers* o)))
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(if wrapper
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(pput wrapper p v)
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(let ((wrapper (make <js-program-wrapper> #:value o #:class "Function"
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#:prototype *function-prototype*)))
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(hashq-set! *program-wrappers* o wrapper)
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(pput wrapper p v)))))
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(define-method (js-prototype (o <applicable>))
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(let ((wrapper (hashq-ref *program-wrappers* o)))
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(if wrapper
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(js-prototype wrapper)
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#f)))
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(define-method (new (f <applicable>) . initargs)
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(let ((o (make <js-object>
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#:prototype (or (js-prototype f) *object-prototype*))))
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(let ((new-o (with-fluid *this* o (lambda () (apply f initargs)))))
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(if (is-a? new-o <js-object>)
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new-o
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o))))
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