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.

module/language/ecmascript/function.scm

@@ -0,0 +1,81 @@
+;;; 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))))