tests/reader.pure.lisp

   1 ;;;; tests related to the Lisp reader
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (in-package "CL-USER")
  15
  16 (assert (equal (symbol-name '#:|fd\sA|) "fdsA"))
  17
  18 ;;; Prior to sbcl-0.7.2.10, SBCL disobeyed the ANSI requirements on
  19 ;;; returning NIL for unset dispatch-macro-character functions. (bug
  20 ;;; 151, fixed by Alexey Dejenka sbcl-devel "bug 151" 2002-04-12)
  21 (assert (not (get-dispatch-macro-character #\# #\{)))
  22 (assert (not (get-dispatch-macro-character #\# #\0)))
  23 ;;; And we might as well test that we don't have any cross-compilation
  24 ;;; shebang residues left...
  25 (assert (not (get-dispatch-macro-character #\# #\!)))
  26 ;;; Also test that all the illegal sharp macro characters are
  27 ;;; recognized as being illegal.
  28 (loop for char in '(#\Backspace #\Tab #\Newline #\Linefeed
  29                     #\Page #\Return #\Space #\) #\<)
  30    do (assert (get-dispatch-macro-character #\# char)))
  31
  32 (assert (not (ignore-errors (get-dispatch-macro-character #\! #\0)
  33                             t)))
  34
  35 ;;; In sbcl-0.7.3, GET-MACRO-CHARACTER and SET-MACRO-CHARACTER didn't
  36 ;;; use NIL to represent the no-macro-attached-to-this-character case
  37 ;;; as ANSI says they should. (This problem is parallel to the
  38 ;;; GET-DISPATCH-MACRO misbehavior fixed in sbcl-0.7.2.10, but
  39 ;;; was fixed a little later.)
  40 (dolist (customizable-char
  41          ;; According to ANSI "2.1.4 Character Syntax Types", these
  42          ;; characters are reserved for the programmer.
  43          '(#\? #\! #\[ #\] #\{ #\}))
  44   ;; So they should have no macro-characterness.
  45   (multiple-value-bind (macro-fun non-terminating-p)
  46       (get-macro-character customizable-char)
  47     (assert (null macro-fun))
  48     ;; Also, in a bit of ANSI weirdness, NON-TERMINATING-P can be
  49     ;; true only when MACRO-FUN is true. (When the character
  50     ;; is not a macro character, it can be embedded in a token,
  51     ;; so it'd be more logical for NON-TERMINATING-P to be T in
  52     ;; this case; but ANSI says it's NIL in this case.
  53     (assert (null non-terminating-p))))
  54
  55 ;;; rudimentary test of SET-SYNTAX-FROM-CHAR, just to verify that it
  56 ;;; wasn't totally broken by the GET-MACRO-CHARACTER/SET-MACRO-CHARACTER
  57 ;;; fixes in 0.7.3.16
  58 (assert (= 123579 (read-from-string "123579")))
  59 (let ((*readtable* (copy-readtable)))
  60   (set-syntax-from-char #\7 #\;)
  61   (assert (= 1235 (read-from-string "123579"))))
  62
  63 ;;; PARSE-INTEGER must signal an error of type PARSE-ERROR if it is
  64 ;;; unable to parse an integer and :JUNK-ALLOWED is NIL.
  65 (macrolet ((assert-parse-error (form)
  66              `(multiple-value-bind (val cond)
  67                   (ignore-errors ,form)
  68                 (assert (null val))
  69                 (assert (typep cond 'parse-error)))))
  70   (assert-parse-error (parse-integer "    "))
  71   (assert-parse-error (parse-integer "12 a"))
  72   (assert-parse-error (parse-integer "12a"))
  73   (assert-parse-error (parse-integer "a"))
  74   (assert (= (parse-integer "12") 12))
  75   (assert (= (parse-integer "   12   ") 12))
  76   (assert (= (parse-integer "   12asdb" :junk-allowed t) 12)))
  77
  78 ;;; #A notation enforces that once one 0 dimension has been found, all
  79 ;;; subsequent ones are also 0.
  80 (assert (equal (array-dimensions (read-from-string "#3A()"))
  81                '(0 0 0)))
  82 (assert (equal (array-dimensions (read-from-string "#3A(())"))
  83                '(1 0 0)))
  84 (assert (equal (array-dimensions (read-from-string "#3A((() ()))"))
  85                '(1 2 0)))
  86
  87 ;;; Bug reported by Nikodemus Siivola on sbcl-devel 2003-07-21:
  88 ;;; package misconfiguration
  89 (assert (eq
  90          (handler-case (with-input-from-string (s "cl:") (read s))
  91            (end-of-file (c)
  92              'good))
  93          'good))
  94
  95 ;;; Bugs found by Paul Dietz
  96 (assert (equal (multiple-value-list
  97                 (parse-integer "   123      "))
  98                '(123 12)))
  99
 100 (let* ((base "xxx 123  yyy")
 101        (intermediate (make-array 8 :element-type (array-element-type base)
 102                                  :displaced-to base
 103                                  :displaced-index-offset 2))
 104        (string (make-array 6 :element-type (array-element-type base)
 105                            :displaced-to intermediate
 106                            :displaced-index-offset 1)))
 107   (assert (equal (multiple-value-list
 108                   (parse-integer string))
 109                  '(123 6))))