sql/cmucl-compat.lisp

   1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
   2 ;;;; *************************************************************************
   3 ;;;; FILE IDENTIFICATION
   4 ;;;;
   5 ;;;; Name:          cmucl-compat.lisp
   6 ;;;; Purpose:       Compatiblity library for CMUCL functions
   7 ;;;; Programmer:    Kevin M. Rosenberg
   8 ;;;; Date Started:  Feb 2002
   9 ;;;;
  10 ;;;; $Id$
  11 ;;;;
  12 ;;;; This file, part of CLSQL, is Copyright (c) 2002-2006 by Kevin M. Rosenberg
  13 ;;;;
  14 ;;;; CLSQL users are granted the rights to distribute and use this software
  15 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
  16 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
  17 ;;;; *************************************************************************
  18
  19 (in-package #:cl-user)
  20
  21 (defpackage #:cmucl-compat
  22   (:use #:common-lisp)
  23   (:export
  24    #:shrink-vector
  25    #:make-sequence-of-type
  26    #:result-type-or-lose
  27    #:required-argument
  28    ))
  29 (in-package #:cmucl-compat)
  30
  31 #+(or cmu scl)
  32 (defmacro required-argument ()
  33   `(ext:required-argument))
  34
  35 #-(or cmu scl)
  36 (defun required-argument ()
  37   (error "~&A required keyword argument was not supplied"))
  38
  39 #+(or cmu scl)
  40 (defmacro shrink-vector (vec len)
  41   `(lisp::shrink-vector ,vec ,len))
  42
  43 #+sbcl
  44 (defmacro shrink-vector (vec len)
  45   `(sb-kernel::shrink-vector ,vec ,len))
  46
  47 #-(or cmu sbcl scl)
  48 (defmacro shrink-vector (vec len)
  49   "Shrinks a vector. Optimized if vector has a fill pointer.
  50 Needs to be a macro to overwrite value of VEC."
  51   (let ((new-vec (gensym)))
  52     `(cond
  53       ((adjustable-array-p ,vec)
  54        (adjust-array ,vec ,len))
  55       ((typep ,vec 'simple-array)
  56        (let ((,new-vec (make-array ,len :element-type
  57                                    (array-element-type ,vec))))
  58          (check-type ,len fixnum)
  59          (locally (declare (optimize (speed 3) (safety 0) (space 0)) )
  60            (dotimes (i ,len)
  61              (declare (fixnum i))
  62              (setf (aref ,new-vec i) (aref ,vec i))))
  63          (setq ,vec ,new-vec)))
  64       ((typep ,vec 'vector)
  65         (setf (fill-pointer ,vec) ,len)
  66         ,vec)
  67       (t
  68        (error "Unable to shrink vector ~S which is type-of ~S" ,vec (type-of ,vec)))
  69        )))
  70
  71
  72 #-(or cmu scl)
  73 (defun make-sequence-of-type (type length)
  74   "Returns a sequence of the given TYPE and LENGTH."
  75   (make-sequence type length))
  76
  77 #+(or cmu scl)
  78 (if (fboundp 'lisp::make-sequence-of-type)
  79     (defun make-sequence-of-type (type len)
  80       (lisp::make-sequence-of-type type len))
  81   (defun make-sequence-of-type (type len)
  82     (common-lisp::make-sequence-of-type type len)))
  83
  84 #-(or cmu scl)
  85 (defun result-type-or-lose (type nil-ok)
  86   (unless (or type nil-ok)
  87     (error "NIL output type invalid for this sequence function"))
  88   (case type
  89     ((list cons)
  90      'list)
  91     ((string simple-string base-string simple-base-string)
  92      'string)
  93     (simple-vector
  94      'simple-vector)
  95     (vector
  96      'vector)
  97     (t
  98      (error "~S is a bad type specifier for sequence functions." type))
  99     ))
 100
 101 #+(or cmu scl)
 102 (defun result-type-or-lose (type nil-ok)
 103   (lisp::result-type-or-lose type nil-ok))