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rely on syntax objects preserving source locations

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Rely on the representation of source locations in syntax objects, so
that its marshaling can take care of problems with absolute paths.
This commit is contained in:
Matthew Flatt 2015-12-09 17:24:20 -07:00
parent 6b8490b78b
commit 904f83ecf3
2 changed files with 15 additions and 34 deletions
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29
scribble-lib/scribble/doclang.rkt
View File

@ -68,31 +68,26 @@
[(_ s e)
(if (string? (syntax-e #'s))
#'s
(with-syntax ([src (syntax-source #'e)]
[line (syntax-line #'e)]
[col (syntax-column #'e)]
[pos (syntax-position #'e)]
[span (syntax-column #'e)])
#'(check-pre-part e (vector 'src 'line 'col 'pos 'span))))]))
(with-syntax ([loc (datum->syntax #f 'loc #'e)])
#'(check-pre-part e (quote-syntax loc))))]))
(define (check-pre-part v s)
(define (check-pre-part v loc-stx)
(if (pre-part? v)
v
(error
(format
"~a: not valid in document body (need a pre-part for decode) in: ~e"
(cond
[(and (vector-ref s 0)
(vector-ref s 1))
[(and (syntax-source loc-stx)
(syntax-line loc-stx))
(format "~a:~a:~a"
(vector-ref s 0)
(vector-ref s 1)
(vector-ref s 2))]
[(and (vector-ref s 0)
(vector-ref s 3))
(syntax-source loc-stx)
(syntax-line loc-stx)
(syntax-column loc-stx))]
[(and (syntax-source loc-stx)
(syntax-position loc-stx))
(format "~a:::~a"
(vector-ref s 0)
(vector-ref s 1)
(vector-ref s 3))]
(syntax-source loc-stx)
(syntax-position loc-stx))]
[else 'document])
v))))

20
scribble-lib/scribble/private/qsloc.rkt
View File

@ -3,20 +3,6 @@
(provide quote-syntax/loc)
(define-syntax (quote-syntax/loc stx)
(syntax-case stx ()
[(_ id)
(with-syntax ([loc (let ([s #'id])
(vector (syntax-source s)
(syntax-line s)
(syntax-column s)
(syntax-position s)
(syntax-span s)))])
#'(let ([s (*quote-syntax/loc id)])
(datum->syntax s (syntax-e s) 'loc s)))]))
(define-syntax *quote-syntax/loc
(syntax-rules ()
[(_ (sub ...)) (datum->syntax #f (list (quote-syntax/loc sub) ...))]
[(_ id) (quote-syntax id)]))
;; Source locations are now preserved in the bytecode form of `quote-syntax`:
(define-syntax-rule (quote-syntax/loc d)
(quote-syntax d))