mirror of
https://git.savannah.gnu.org/git/guile.git
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6d5f8c324e
* libguile/read.c (scm_read_r6rs_block_comment):
* test-suite/tests/reader.test ("reading"): Fix reading of #||||#,
originally reported in bug debbugs.gnu.org/9672, by Bruno Haible.
Thanks, Bruno!
452 lines
16 KiB
Scheme
452 lines
16 KiB
Scheme
;;;; reader.test --- Reader test. -*- coding: iso-8859-1; mode: scheme -*-
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;;;;
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;;;; Copyright (C) 1999, 2001, 2002, 2003, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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;;;; Jim Blandy <jimb@red-bean.com>
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;;;;
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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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(define-module (test-suite reader)
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:use-module (srfi srfi-1)
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:use-module (test-suite lib))
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(define exception:eof
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(cons 'read-error "end of file$"))
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(define exception:unexpected-rparen
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(cons 'read-error "unexpected \")\"$"))
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(define exception:unexpected-rsqbracket
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(cons 'read-error "unexpected \"]\"$"))
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(define exception:unterminated-block-comment
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(cons 'read-error "unterminated `#. \\.\\.\\. .#' comment$"))
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(define exception:unknown-character-name
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(cons 'read-error "unknown character name .*$"))
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(define exception:unknown-sharp-object
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(cons 'read-error "Unknown # object: .*$"))
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(define exception:eof-in-string
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(cons 'read-error "end of file in string constant$"))
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(define exception:eof-in-symbol
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(cons 'read-error "end of file while reading symbol$"))
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(define exception:illegal-escape
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(cons 'read-error "illegal character in escape sequence: .*$"))
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(define exception:missing-expression
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(cons 'read-error "no expression after #;"))
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(define exception:mismatched-paren
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(cons 'read-error "mismatched close paren"))
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(define (read-string s)
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(with-fluids ((%default-port-encoding #f))
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(with-input-from-string s (lambda () (read)))))
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(define (with-read-options opts thunk)
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(let ((saved-options (read-options)))
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(dynamic-wind
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(lambda ()
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(read-options opts))
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thunk
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(lambda ()
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(read-options saved-options)))))
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(with-test-prefix "reading"
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(pass-if "0"
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(equal? (read-string "0") 0))
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(pass-if "1++i"
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(equal? (read-string "1++i") '1++i))
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(pass-if "1+i+i"
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(equal? (read-string "1+i+i") '1+i+i))
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(pass-if "1+e10000i"
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(equal? (read-string "1+e10000i") '1+e10000i))
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(pass-if "-nan.0-1i"
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(not (equal? (imag-part (read-string "-nan.0-1i"))
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(imag-part (read-string "-nan.0+1i")))))
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;; At one time the arg list for "Unknown # object: ~S" didn't make it out
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;; of read.c. Check that `format' can be applied to this error.
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(pass-if "error message on bad #"
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(catch #t
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(lambda ()
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(read-string "#ZZZ")
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;; oops, this # is supposed to be unrecognised
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#f)
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(lambda (key subr message args rest)
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(apply format #f message args)
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;; message and args are ok
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#t)))
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(pass-if "block comment"
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(equal? '(+ 1 2 3)
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(read-string "(+ 1 #! this is a\ncomment !# 2 3)")))
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(pass-if "block comment finishing s-exp"
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(equal? '(+ 2)
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(read-string "(+ 2 #! a comment\n!#\n) ")))
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(pass-if "R6RS lexeme comment"
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(equal? '(+ 1 2 3)
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(read-string "(+ 1 #!r6rs 2 3)")))
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(pass-if "partial R6RS lexeme comment"
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(equal? '(+ 1 2 3)
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(read-string "(+ 1 #!r6r !# 2 3)")))
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(pass-if "R6RS/SRFI-30 block comment"
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(equal? '(+ 1 2 3)
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(read-string "(+ 1 #| this is a\ncomment |# 2 3)")))
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(pass-if "R6RS/SRFI-30 nested block comment"
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(equal? '(a b c)
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(read-string "(a b c #| d #| e |# f |#)")))
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(pass-if "R6RS/SRFI-30 nested block comment (2)"
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(equal? '(a b c)
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(read-string "(a b c #|||||||#)")))
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(pass-if "R6RS/SRFI-30 nested block comment (3)"
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(equal? '(a b c)
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(read-string "(a b c #||||||||#)")))
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(pass-if "R6RS/SRFI-30 block comment syntax overridden"
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;; To be compatible with 1.8 and earlier, we should be able to override
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;; this syntax.
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(with-fluids ((%read-hash-procedures (fluid-ref %read-hash-procedures)))
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(read-hash-extend #\| (lambda args 'not))
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(fold (lambda (x y result)
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(and result (eq? x y)))
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#t
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(read-string "(this is #| a comment)")
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`(this is not a comment))))
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(pass-if "unprintable symbol"
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;; The reader tolerates unprintable characters for symbols.
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(equal? (string->symbol "\x01\x02\x03")
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(read-string "\x01\x02\x03")))
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(pass-if "CR recognized as a token delimiter"
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;; In 1.8.3, character 0x0d was not recognized as a delimiter.
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(equal? (read-string "one\x0dtwo") 'one))
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(pass-if "returned strings are mutable"
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;; Per R5RS Section 3.4, "Storage Model", `read' is supposed to return
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;; mutable objects.
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(let ((str (with-input-from-string "\"hello, world\"" read)))
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(string-set! str 0 #\H)
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(string=? str "Hello, world")))
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(pass-if "square brackets are parens"
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(equal? '() (read-string "[]")))
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(pass-if-exception "paren mismatch" exception:unexpected-rparen
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(read-string "'[)"))
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(pass-if-exception "paren mismatch (2)" exception:unexpected-rsqbracket
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(read-string "'(]"))
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(pass-if-exception "paren mismatch (3)" exception:mismatched-paren
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(read-string "'(foo bar]"))
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(pass-if-exception "paren mismatch (4)" exception:mismatched-paren
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(read-string "'[foo bar)")))
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(pass-if-exception "radix passed to number->string can't be zero"
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exception:out-of-range
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(number->string 10 0))
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(pass-if-exception "radix passed to number->string can't be one either"
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exception:out-of-range
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(number->string 10 1))
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(with-test-prefix "mismatching parentheses"
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(pass-if-exception "opening parenthesis"
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exception:eof
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(read-string "("))
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(pass-if-exception "closing parenthesis following mismatched opening"
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exception:unexpected-rparen
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(read-string ")"))
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(pass-if-exception "closing square bracket following mismatched opening"
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exception:unexpected-rsqbracket
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(read-string "]"))
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(pass-if-exception "opening vector parenthesis"
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exception:eof
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(read-string "#("))
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(pass-if-exception "closing parenthesis following mismatched vector opening"
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exception:unexpected-rparen
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(read-string ")")))
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(with-test-prefix "exceptions"
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;; Reader exceptions: although they are not documented, they may be relied
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;; on by some programs, hence these tests.
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(pass-if-exception "unterminated block comment"
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exception:unterminated-block-comment
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(read-string "(+ 1 #! comment\n..."))
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(pass-if-exception "R6RS/SRFI-30 unterminated nested block comment"
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exception:unterminated-block-comment
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(read-string "(foo #| bar #| |#)"))
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(pass-if-exception "unknown character name"
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exception:unknown-character-name
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(read-string "#\\theunknowncharacter"))
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(pass-if-exception "unknown sharp object"
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exception:unknown-sharp-object
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(read-string "#?"))
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(pass-if-exception "eof in string"
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exception:eof-in-string
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(read-string "\"the string that never ends"))
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(pass-if-exception "illegal escape in string"
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exception:illegal-escape
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(read-string "\"some string \\???\"")))
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(with-test-prefix "read-options"
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(pass-if "case-sensitive"
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(not (eq? 'guile 'GuiLe)))
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(pass-if "case-insensitive"
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(eq? 'guile
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(with-read-options '(case-insensitive)
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(lambda ()
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(read-string "GuiLe")))))
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(pass-if "prefix keywords"
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(eq? #:keyword
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(with-read-options '(keywords prefix case-insensitive)
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(lambda ()
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(read-string ":KeyWord")))))
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(pass-if "prefix non-keywords"
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(symbol? (with-read-options '(keywords prefix)
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(lambda ()
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(read-string "srfi88-keyword:")))))
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(pass-if "postfix keywords"
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(eq? #:keyword
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(with-read-options '(keywords postfix)
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(lambda ()
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(read-string "keyword:")))))
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(pass-if "long postfix keywords"
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(eq? #:keyword0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
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(with-read-options '(keywords postfix)
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(lambda ()
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(read-string "keyword0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789:")))))
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(pass-if "`:' is not a postfix keyword (per SRFI-88)"
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(eq? ':
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(with-read-options '(keywords postfix)
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(lambda ()
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(read-string ":")))))
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(pass-if "no positions"
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(let ((sexp (with-read-options '()
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(lambda ()
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(read-string "(+ 1 2 3)")))))
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(and (not (source-property sexp 'line))
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(not (source-property sexp 'column)))))
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(pass-if "positions"
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(let ((sexp (with-read-options '(positions)
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(lambda ()
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(read-string "(+ 1 2 3)")))))
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(and (equal? (source-property sexp 'line) 0)
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(equal? (source-property sexp 'column) 0))))
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(pass-if "positions on quote"
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(let ((sexp (with-read-options '(positions)
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(lambda ()
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(read-string "'abcde")))))
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(and (equal? (source-property sexp 'line) 0)
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(equal? (source-property sexp 'column) 0))))
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(pass-if "position of SCSH block comment"
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;; In Guile 2.0.0 the reader would not update the port's position
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;; when reading an SCSH block comment.
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(let ((sexp (with-read-options '(positions)
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(lambda ()
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(read-string "#!foo\nbar\nbaz\n!#\n(hello world)\n")))))
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(= 4 (source-property sexp 'line))))
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(with-test-prefix "r6rs-hex-escapes"
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(pass-if-exception "non-hex char in two-digit hex-escape"
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exception:illegal-escape
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(with-input-from-string "\"\\x0g;\"" read))))
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(pass-if-exception "non-hex char in four-digit hex-escape"
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exception:illegal-escape
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(with-input-from-string "\"\\x000g;\"" read))))
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(pass-if-exception "non-hex char in six-digit hex-escape"
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exception:illegal-escape
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(with-input-from-string "\"\\x00000g;\"" read))))
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(pass-if-exception "no semicolon at termination of one-digit hex-escape"
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exception:illegal-escape
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(with-input-from-string "\"\\x0\"" read))))
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(pass-if-exception "no semicolon at termination of three-digit hex-escape"
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exception:illegal-escape
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(with-input-from-string "\"\\x000\"" read))))
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(pass-if "two-digit hex escape"
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(eqv?
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(string-ref (with-input-from-string "\"--\\xff;--\"" read) 2)))
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(integer->char #xff)))
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(pass-if "four-digit hex escape"
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(eqv?
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(string-ref (with-input-from-string "\"--\\x0100;--\"" read) 2)))
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(integer->char #x0100)))
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(pass-if "six-digit hex escape"
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(eqv?
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(string-ref (with-input-from-string "\"--\\x010300;--\"" read) 2)))
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(integer->char #x010300)))
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(pass-if "escaped characters match non-escaped ASCII characters"
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(string=?
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(with-input-from-string "\"\\x41;\\x0042;\\x000043;\"" read)))
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"ABC"))
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(pass-if "write R6RS string escapes"
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(let* ((s1 (apply string
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(map integer->char '(#x8 ; backspace
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#x18 ; cancel
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#x20 ; space
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#x30 ; zero
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#x40 ; at sign
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))))
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(s2 (with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(with-output-to-string
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(lambda () (write s1)))))))
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(lset= eqv?
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(string->list s2)
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(list #\" #\\ #\b #\\ #\x #\1 #\8 #\; #\space #\0 #\@ #\"))))
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(pass-if "display R6RS string escapes"
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(string=?
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(let ((pt (open-output-string))
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(s1 (apply string (map integer->char
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'(#xFF #x100 #xFFF #x1000 #xFFFF #x10000)))))
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(set-port-encoding! pt "ASCII")
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(set-port-conversion-strategy! pt 'escape)
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(display s1 pt)
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(get-output-string pt))))
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"\\xff;\\x100;\\xfff;\\x1000;\\xffff;\\x10000;"))
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(pass-if "one-digit hex escape"
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(eqv? (with-input-from-string "#\\xA" read)
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(integer->char #x0A)))
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(pass-if "two-digit hex escape"
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(eqv? (with-input-from-string "#\\xFF" read)
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(integer->char #xFF)))
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(pass-if "four-digit hex escape"
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(eqv? (with-input-from-string "#\\x00FF" read)
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(integer->char #xFF)))
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(pass-if "eight-digit hex escape"
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(eqv? (with-input-from-string "#\\x00006587" read)
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(integer->char #x6587)))
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(pass-if "write R6RS escapes"
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(string=?
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(with-read-options '(r6rs-hex-escapes)
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(lambda ()
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(with-output-to-string
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(lambda ()
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(write (integer->char #x80))))))
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"#\\x80")))
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(with-test-prefix "hungry escapes"
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(pass-if "default not hungry"
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;; Assume default setting of not hungry.
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(equal? (with-input-from-string "\"foo\\\n bar\""
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read)
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"foo bar"))
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(pass-if "hungry"
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(dynamic-wind
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(lambda ()
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(read-enable 'hungry-eol-escapes))
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(lambda ()
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(equal? (with-input-from-string "\"foo\\\n bar\""
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read)
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"foobar"))
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(lambda ()
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(read-disable 'hungry-eol-escapes))))))
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(with-test-prefix "#;"
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(for-each
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(lambda (pair)
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(pass-if (car pair)
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(equal? (with-input-from-string (car pair) read) (cdr pair))))
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'(("#;foo 10". 10)
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("#;(10 20 30) foo" . foo)
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("#; (10 20 30) foo" . foo)
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("#;\n10\n20" . 20)))
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(pass-if "#;foo"
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(eof-object? (with-input-from-string "#;foo" read)))
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(pass-if-exception "#;"
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exception:missing-expression
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(with-input-from-string "#;" read))
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(pass-if-exception "#;("
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exception:eof
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(with-input-from-string "#;(" read)))
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(with-test-prefix "#'"
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(for-each
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(lambda (pair)
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(pass-if (car pair)
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(equal? (with-input-from-string (car pair) read) (cdr pair))))
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'(("#'foo". (syntax foo))
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("#`foo" . (quasisyntax foo))
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("#,foo" . (unsyntax foo))
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("#,@foo" . (unsyntax-splicing foo)))))
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(with-test-prefix "#{}#"
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(pass-if (equal? (read-string "#{}#") '#{}#))
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(pass-if (not (equal? (read-string "(a #{.}# b)") '(a . b))))
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(pass-if (equal? (read-string "#{a}#") 'a))
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(pass-if (equal? (read-string "#{a b}#") '#{a b}#))
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(pass-if-exception "#{" exception:eof-in-symbol
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(read-string "#{"))
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(pass-if (equal? (read-string "#{a\\x20;b}#") '#{a b}#)))
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(begin-deprecated
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(with-test-prefix "deprecated #{}# escapes"
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(pass-if (equal? (read-string "#{a\\ b}#") '#{a b}#))))
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;;; Local Variables:
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;;; eval: (put 'with-read-options 'scheme-indent-function 1)
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;;; End:
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