suzanne.soy/extensible-parser-specifications
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Fix for 6.4 and 6.5 where with-disappeared-uses does not allow multiple body statements.

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This commit is contained in:
Georges Dupéron 2016-08-29 23:16:57 +02:00
parent 6475b89bc8
commit 468495937c
1 changed files with 34 additions and 32 deletions
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66
private/define-syntax+simple-api.rkt
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@ -33,35 +33,37 @@
#:with colon-stxclass (format-id #'cls ":~a" #'cls)
#:with name-forward (format-id #'name "~a-forward-attributes" #'name)
(with-disappeared-uses
(define c (syntax-local-value/record #'cls syntax/parse:stxclass?))
(define attrs (syntax/parse:stxclass-attrs c))
(define/with-syntax (attr-name …) (map syntax/parse:attr-name attrs))
(define/with-syntax (attr-name/ctx …)
(stx-map (λ (a) (datum->syntax #'body (syntax-e a)))
#'(attr-name …)))
(define-temp-ids "~a/arg" (attr-name …))
(define/with-syntax (attr-depth …) (map syntax/parse:attr-depth attrs))
#'(begin
(define (name stx2)
(syntax-parameterize ([stx (make-rename-transformer #'stx2)])
(syntax-parse stx2
[(name colon-stxclass) . body])))
(define (private-simple-api stx/arg attr-name/arg …)
(syntax-parameterize ([stx (make-rename-transformer #'stx/arg)])
(syntax-parse #'nothing
[(~bind [(attr-name/ctx attr-depth) attr-name/arg] …)
. body])))
(define-syntax (name-forward stx3)
(syntax-case stx3 ()
[(_)
#`(private-simple-api
stx
(attribute #,(datum->syntax stx3 'attr-name))
…)]
[(_ forward-args-prefix)
#`(private-simple-api
stx
(attribute #,(format-id stx3 "~a.~a"
#'forward-args-prefix
'attr-name))
…)]))))])))
(let ()
(define c (syntax-local-value/record #'cls syntax/parse:stxclass?))
(define attrs (syntax/parse:stxclass-attrs c))
(define/with-syntax (attr-name …) (map syntax/parse:attr-name attrs))
(define/with-syntax (attr-name/ctx …)
(stx-map (λ (a) (datum->syntax #'body (syntax-e a)))
#'(attr-name …)))
(define-temp-ids "~a/arg" (attr-name …))
(define/with-syntax (attr-depth …)
(map syntax/parse:attr-depth attrs))
#'(begin
(define (name stx2)
(syntax-parameterize ([stx (make-rename-transformer #'stx2)])
(syntax-parse stx2
[(name colon-stxclass) . body])))
(define (private-simple-api stx/arg attr-name/arg …)
(syntax-parameterize ([stx (make-rename-transformer #'stx/arg)])
(syntax-parse #'nothing
[(~bind [(attr-name/ctx attr-depth) attr-name/arg] …)
. body])))
(define-syntax (name-forward stx3)
(syntax-case stx3 ()
[(_)
#`(private-simple-api
stx
(attribute #,(datum->syntax stx3 'attr-name))
…)]
[(_ forward-args-prefix)
#`(private-simple-api
stx
(attribute #,(format-id stx3 "~a.~a"
#'forward-args-prefix
'attr-name))
…)])))))])))