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check the context we are expanding into

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svn: r17170
This commit is contained in:
Jon Rafkind 2009-12-03 00:44:11 +00:00
parent 3d10bff57c
commit 81b30db001
1 changed files with 17 additions and 1 deletions
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18
collects/honu/private/macro.ss
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@ -2,6 +2,7 @@
(require "honu.ss"
(for-syntax "debug.ss"
"contexts.ss"
scheme/base
syntax/parse
syntax/stx
@ -389,8 +390,23 @@
#:literals (honu-literal ...)
[(name pattern* ... . rrest)
(with-syntax ([(out (... ...)) (unpull #'pulled)])
;; TODO: use the proper `honu-unparsed' form depending on the context
(define (X) (raise-syntax-error (syntax->datum #'name) "implement for this context"))
(values
;; this is sort of ugly, is there a better way?
(cond
[(type-context? ctx) (X)]
[(type-or-expression-context? ctx) (X)]
[(expression-context? ctx) #'(honu-unparsed-expr out (... ...))]
[(expression-block-context? ctx)
#'(honu-unparsed-begin out (... ...))]
[(block-context? ctx)
#'(honu-unparsed-begin out (... ...))]
[(variable-definition-context? ctx) (X)]
[(constant-definition-context? ctx) (X)]
[(function-definition-context? ctx) (X)]
[(prototype-context? ctx) (X)]
[else #'(honu-unparsed-expr out (... ...))])
#;
#'(honu-unparsed-begin out (... ...))
#'rrest)
#;