1 files changed, 78 insertions, 0 deletions
diff --git a/module/language/ecmascript/function.scm b/module/language/ecmascript/function.scm
new file mode 100644
index 000000000..710c5cb1c
--- /dev/null
+++ b/module/language/ecmascript/function.scm
@@ -0,0 +1,78 @@
+;;; 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 function)
+  #:use-module (oop goops)
+  #:use-module (language ecmascript base)
+  #:export (*function-prototype* *program-wrappers*))
+
+
+(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 (js-constructor (o <applicable>))
+  (let ((wrapper (hashq-ref *program-wrappers* o)))
+    (if wrapper
+        (js-constructor wrapper)
+        #f)))