mirror of
https://git.savannah.gnu.org/git/guile.git
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53befeb700
(Not quite finished, the following will be done tomorrow. module/srfi/*.scm module/rnrs/*.scm module/scripts/*.scm testsuite/*.scm guile-readline/* )
121 lines
4.7 KiB
Scheme
121 lines
4.7 KiB
Scheme
;;; ECMAScript for Guile
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;; Copyright (C) 2009 Free Software Foundation, Inc.
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library 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 GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;; Code:
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(define-module (language ecmascript array)
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#:use-module (oop goops)
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#:use-module (language ecmascript base)
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#:use-module (language ecmascript function)
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#:export (*array-prototype* new-array))
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(define-class <js-array-object> (<js-object>)
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(vector #:init-value #() #:accessor js-array-vector #:init-keyword #:vector))
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(define (new-array . vals)
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(let ((o (make <js-array-object> #:class "Array"
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#:prototype *array-prototype*)))
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(pput o 'length (length vals))
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(let ((vect (js-array-vector o)))
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(let lp ((i 0) (vals vals))
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(cond ((not (null? vals))
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(vector-set! vect i (car vals))
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(lp (1+ i) (cdr vals)))
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(else o))))))
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(define *array-prototype* (make <js-object> #:class "Array"
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#:value new-array
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#:constructor new-array))
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(hashq-set! *program-wrappers* new-array *array-prototype*)
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(pput *array-prototype* 'prototype *array-prototype*)
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(pput *array-prototype* 'constructor new-array)
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(define-method (pget (o <js-array-object>) p)
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(cond ((and (integer? p) (exact? p) (>= p 0))
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(let ((v (js-array-vector o)))
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(if (< p (vector-length v))
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(vector-ref v p)
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(next-method))))
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((or (and (symbol? p) (eq? p 'length))
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(and (string? p) (string=? p "length")))
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(vector-length (js-array-vector o)))
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(else (next-method))))
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(define-method (pput (o <js-array-object>) p v)
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(cond ((and (integer? p) (exact? p) (>= 0 p))
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(let ((vect (js-array-vector o)))
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(if (< p (vector-length vect))
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(vector-set! vect p)
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;; Fixme: round up to powers of 2?
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(let ((new (make-vector (1+ p) 0)))
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(vector-move-left! vect 0 (vector-length vect) new 0)
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(set! (js-array-vector o) new)
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(vector-set! new p)))))
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((or (and (symbol? p) (eq? p 'length))
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(and (string? p) (string=? p "length")))
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(let ((vect (js-array-vector o)))
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(let ((new (make-vector (->uint32 v) 0)))
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(vector-move-left! vect 0 (min (vector-length vect) (->uint32 v))
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new 0)
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(set! (js-array-vector o) new))))
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(else (next-method))))
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(define-js-method *array-prototype* (toString)
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(format #f "~A" (js-array-vector this)))
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(define-js-method *array-prototype* (concat . rest)
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(let* ((len (apply + (->uint32 (pget this 'length))
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(map (lambda (x) (->uint32 (pget x 'length)))
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rest)))
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(rv (make-vector len 0)))
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(let lp ((objs (cons this rest)) (i 0))
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(cond ((null? objs) (make <js-array-object> #:class "Array"
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#:prototype *array-prototype*
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#:vector rv))
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((is-a? (car objs) <js-array-object>)
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(let ((v (js-array-vector (car objs))))
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(vector-move-left! v 0 (vector-length v)
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rv i (+ i (vector-length v)))
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(lp (cdr objs) (+ i (vector-length v)))))
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(else
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(error "generic array concats not yet implemented"))))))
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(define-js-method *array-prototype* (join . separator)
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(let lp ((i (1- (->uint32 (pget this 'length)))) (l '()))
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(if (< i 0)
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(string-join l (if separator (->string (car separator)) ","))
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(lp (1+ i)
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(cons (->string (pget this i)) l)))))
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(define-js-method *array-prototype* (pop)
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(let ((len (->uint32 (pget this 'length))))
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(if (zero? len)
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*undefined*
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(let ((ret (pget this (1- len))))
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(pput this 'length (1- len))
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ret))))
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(define-js-method *array-prototype* (push . args)
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(let lp ((args args))
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(if (null? args)
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(->uint32 (pget this 'length))
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(begin (pput this (->uint32 (pget this 'length)) (car args))
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(lp (cdr args))))))
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