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match: avoid recording full paths

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Use a syntax object to store a source location, letting the
marshal process for syntax objects deal with non-relative
paths.
This commit is contained in:
Matthew Flatt 2015-12-09 16:44:00 -07:00
parent 2743ea06bb
commit 1d7429f1d7
2 changed files with 12 additions and 8 deletions
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10
racket/collects/racket/match/gen-match.rkt
View File

@ -2,7 +2,7 @@
(require "patterns.rkt" "compiler.rkt"
syntax/stx syntax/parse racket/syntax
(for-template racket/base (only-in "runtime.rkt" match:error fail)))
(for-template racket/base (only-in "runtime.rkt" match:error fail syntax-srclocs)))
(provide go go/one)
@ -33,17 +33,13 @@
(syntax-e #'fname)]
[_ 'match]))
(define len (length (syntax->list es)))
(define srcloc-list (list #`(quote #,(syntax-source stx))
#`(quote #,(syntax-line stx))
#`(quote #,(syntax-column stx))
#`(quote #,(syntax-position stx))
#`(quote #,(syntax-span stx))))
(define srcloc-stx (datum->syntax #f 'srcloc stx))
(define/with-syntax (xs ...) (generate-temporaries es))
(define/with-syntax (exprs ...) es)
(define/with-syntax outer-fail (generate-temporary #'fail))
(define/with-syntax orig-expr (if (= 1 len) (stx-car #'(xs ...)) #'(list xs ...)))
(define/with-syntax raise-error
(quasisyntax/loc stx (match:error orig-expr (list (srcloc #,@srcloc-list)) 'form-name)))
(quasisyntax/loc stx (match:error orig-expr (syntax-srclocs (quote-syntax #,srcloc-stx)) 'form-name)))
(define parsed-clauses
(for/list ([clause (syntax->list clauses)]
[pats (syntax->list #'(pats ...))]

10
racket/collects/racket/match/runtime.rkt
View File

@ -9,7 +9,8 @@
fail
matchable?
match-prompt-tag
mlist? mlist->list)
mlist? mlist->list
syntax-srclocs)
(define match-prompt-tag (make-continuation-prompt-tag 'match))
@ -58,3 +59,10 @@
(cond
[(null? l) null]
[else (cons (mcar l) (mlist->list (mcdr l)))]))
(define (syntax-srclocs stx)
(list (srcloc (syntax-source stx)
(syntax-line stx)
(syntax-column stx)
(syntax-position stx)
(syntax-span stx))))