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sanity check for eol, no comment values in delimited lists

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svn: r6718
This commit is contained in:
Eli Barzilay 2007-06-22 18:56:54 +00:00
parent ff1189600a
commit 85b045360a
1 changed files with 9 additions and 5 deletions
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14
collects/scribble/reader.ss
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@ -102,6 +102,12 @@
(datum->syntax-object #f d (placeholder-loc sp))
(datum->syntax-object sp d sp)))
(define eol-token "\n")
(define (eol-syntax? stx) (eq? eol-token (syntax-e stx)))
;; sanity check, in case this gets violated in the future
(unless (eol-syntax? (datum->syntax-object #f eol-token))
(error 'reader "internal error [invalid assumption]"))
;; --------------------------------------------------------------------------
;; main reader function for @ constructs
@ -127,7 +133,7 @@
(let ([x (read-syntax/recursive source-name inp)])
(if (eof-object? x)
(read-error "expected a ']'")
(loop (cons x r)))))))
(loop (if (special-comment? x) r (cons x r))))))))
(define (read-from-bytes-exact-or-identifier bs)
(let ([inp (open-input-bytes bs)]
@ -148,8 +154,6 @@
(loop (sub1 i))))
r))
(define eol-token "\n")
(define (get-attrs)
(and (regexp-match/fail-without-reading open-attrs inp)
(read-delimited-list close-attrs)))
@ -202,8 +206,8 @@
(if (and (pair? stxs) (syntax? stx) (syntax? (car stxs))
(string? (syntax-e stx))
(string? (syntax-e (car stxs)))
(not (eq? eol-token (syntax-e stx)))
(not (eq? eol-token (syntax-e (car stxs)))))
(not (eol-syntax? stx))
(not (eol-syntax? (car stxs))))
(let ([fst (car stxs)])
(cons (datum->syntax-object stx
(string-append (syntax-e fst) (syntax-e stx))