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parse blocks

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This commit is contained in:
Jon Rafkind 2010-07-16 14:21:02 -06:00
parent 00094ba4e3
commit 3d26928a3c
1 changed files with 19 additions and 3 deletions
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22
collects/honu/core/private/parse.rkt
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@ -17,7 +17,8 @@
syntax/name
racket/match
syntax/stx
(for-syntax "util.ss")
(for-syntax "util.ss"
macro-debugger/emit)
(for-syntax syntax/private/stxparse/runtime-prose
syntax/private/stxparse/runtime
)
@ -379,7 +380,10 @@
#:with result #'assignment.result
#:with rest #'assignment.rest]
[pattern ((#%braces stuff ...) . rest)
#:with result (let-values ([(parsed dont-care)
#:with result
(do-parse-block #'(stuff ...))
#;
(let-values ([(parsed dont-care)
(parse-block-one/2 #'(stuff ...) context)])
(printf "Parsed ~a. Dont care rest ~a\n" parsed dont-care)
parsed)]
@ -544,7 +548,7 @@
#;
[pattern (~seq (~var expr honu-identifier) (~optional honu-comma))]
[pattern (~seq (~var expr (expression-1 the-expression-context)) (~optional honu-comma)) #:with result #'expr.result]
[pattern (~seq (~var expr (expression-1 the-expression-context)) (~optional honu-comma)) #:with result (apply-scheme-syntax #'expr.result)]
#;
[pattern ((~seq (~var expr (expression-1 the-expression-context)) (~optional honu-comma)) ...)])
@ -720,3 +724,15 @@
(raise-syntax-error 'honu-syntax "should have been handled already")
#;
(parse-block-one/2 #'(expr ...) the-expression-context))])))
(define (do-parse-block block)
(define parsed
(let loop ([out '()]
[rest block])
(if (stx-null? rest)
out
(let-values ([(out* rest*) (parse-block-one/2 rest the-top-block-context)])
(loop (cons out* out)
rest*)))))
(with-syntax ([(out ...) (reverse parsed)])
#'(begin out ...)))