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authorAndy Wingo <wingo@pobox.com>2009-02-20 12:50:15 +0100
committerAndy Wingo <wingo@pobox.com>2009-02-21 00:33:03 +0100
commite80ce73d209892bae3bea80853d9e0e16cd82ed1 (patch)
treee26c629b2b05091853793542180f79e66cde3a5c /module/language/ecmascript/function.scm
parent8f4e84855e3d88b1dbe929683c5c4d9312986ed8 (diff)
downloadguile-e80ce73d209892bae3bea80853d9e0e16cd82ed1.tar.gz
implement more of the standard runtime
* 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.
Diffstat (limited to 'module/language/ecmascript/function.scm')
-rw-r--r--module/language/ecmascript/function.scm81
1 files changed, 81 insertions, 0 deletions
diff --git a/module/language/ecmascript/function.scm b/module/language/ecmascript/function.scm
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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 function)
+ #:use-module (oop goops)
+ #:use-module (language ecmascript base)
+ #:export (*function-prototype* *program-wrappers* new))
+
+
+(define-class <js-program-wrapper> (<js-object>))
+
+(define *program-wrappers* (make-doubly-weak-hash-table 31))
+
+(define *function-prototype* (make <js-object> #:class "Function"
+ #:value (lambda args *undefined*)))
+
+(define-js-method *function-prototype* (toString)
+ (format #f "~A" (js-value this)))
+
+(define-js-method *function-prototype* (apply this-arg array)
+ (cond ((or (null? array) (eq? array *undefined*))
+ (call/this this-arg (js-value this)))
+ ((is-a? array <js-array-object>)
+ (call/this this-arg
+ (lambda ()
+ (apply (js-value this)
+ (vector->list (js-array-vector array))))))
+ (else
+ (throw 'TypeError 'apply array))))
+
+(define-js-method *function-prototype* (call this-arg . args)
+ (call/this this-arg
+ (lambda ()
+ (apply (js-value this) args))))
+
+(define-method (pget (o <applicable>) p)
+ (let ((wrapper (hashq-ref *program-wrappers* o)))
+ (if wrapper
+ (pget wrapper p)
+ (pget *function-prototype* p))))
+
+(define-method (pput (o <applicable>) p v)
+ (let ((wrapper (hashq-ref *program-wrappers* o)))
+ (if wrapper
+ (pput wrapper p v)
+ (let ((wrapper (make <js-program-wrapper> #:value o #:class "Function"
+ #:prototype *function-prototype*)))
+ (hashq-set! *program-wrappers* o wrapper)
+ (pput wrapper p v)))))
+
+(define-method (js-prototype (o <applicable>))
+ (let ((wrapper (hashq-ref *program-wrappers* o)))
+ (if wrapper
+ (js-prototype wrapper)
+ #f)))
+
+(define-method (new (f <applicable>) . initargs)
+ (let ((o (make <js-object>
+ #:prototype (or (js-prototype f) *object-prototype*))))
+ (let ((new-o (with-fluid *this* o (lambda () (apply f initargs)))))
+ (if (is-a? new-o <js-object>)
+ new-o
+ o))))