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Heed the reader settings implied by #!r6rs

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When encountering the #!r6rs directive, apply the appropriate reader
settings to the port.

* libguile/read.scm (read-string-as-list): New helper procedure.
  (scm_read_shebang): Set reader options implied by the R6RS syntax
  upon encountering the #!r6rs directive.
* test-suite/tests/reader.test (per-port-read-options): Add tests for
  the #!r6rs directive.
This commit is contained in:
Andreas Rottmann 2015-07-28 23:06:36 +02:00 • committed by Andy Wingo
parent aa13da5189
commit d77247b90b
3 changed files with 97 additions and 8 deletions
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45
test-suite/tests/reader.test
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@ -60,6 +60,11 @@
(lambda ()
(read-options saved-options)))))
(define (read-string-as-list s)
(with-input-from-string s
(lambda ()
(unfold eof-object? values (lambda (x) (read)) (read)))))
(with-test-prefix "reading"
(pass-if "0"
@ -432,14 +437,42 @@
(equal? '(guile GuiLe gUIle)
(with-read-options '(case-insensitive)
(lambda ()
(with-input-from-string "GUIle #!no-fold-case GuiLe gUIle"
(lambda ()
(list (read) (read) (read))))))))
(read-string-as-list "GUIle #!no-fold-case GuiLe gUIle")))))
(pass-if "case-insensitive"
(equal? '(GUIle guile guile)
(with-input-from-string "GUIle #!fold-case GuiLe gUIle"
(lambda ()
(list (read) (read) (read)))))))
(read-string-as-list "GUIle #!fold-case GuiLe gUIle")))
(with-test-prefix "r6rs"
(pass-if-equal "case sensitive"
'(guile GuiLe gUIle)
(with-read-options '(case-insensitive)
(lambda ()
(read-string-as-list "GUIle #!r6rs GuiLe gUIle"))))
(pass-if-equal "square brackets"
'((a b c) (foo 42 bar) (x . y))
(read-string-as-list "(a b c) #!r6rs [foo 42 bar] [x . y]"))
(pass-if-equal "hex string escapes"
'("native\x7fsyntax"
"\0"
"ascii\x7fcontrol"
"U\u0100BMP"
"U\U010402SMP")
(read-string-as-list (string-append "\"native\\x7fsyntax\" "
"#!r6rs "
"\"\\x0;\" "
"\"ascii\\x7f;control\" "
"\"U\\x100;BMP\" "
"\"U\\x10402;SMP\"")))
(with-test-prefix "keyword style"
(pass-if-equal "postfix disabled"
'(#:regular #:postfix postfix: #:regular2)
(with-read-options '(keywords postfix)
(lambda ()
(read-string-as-list "#:regular postfix: #!r6rs postfix: #:regular2"))))
(pass-if-equal "prefix disabled"
'(#:regular #:prefix :prefix #:regular2)
(with-read-options '(keywords prefix)
(lambda ()
(read-string-as-list "#:regular :prefix #!r6rs :prefix #:regular2")))))))
(with-test-prefix "#;"
(for-each