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This commit is contained in:
Matthew Butterick 2016-05-25 22:48:42 -07:00
parent 4bccc6c034
commit 3e036415b2
1 changed files with 15 additions and 4 deletions
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19
beautiful-racket/br/demo/hdl/expander.rkt
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@ -23,7 +23,7 @@
([(PARTNAME-BUS-LEFT ...) (prefix-id #'PARTNAME "-" #'(BUS-LEFT ...))]
[CHIP-MODULE-PATH (format-string "~a.hdl.rkt" #'PARTNAME)])
#'(begin
(require (import-chip CHIP-MODULE-PATH) (for-syntax (import-chip CHIP-MODULE-PATH)))
(require (import-chip CHIP-MODULE-PATH) #;(for-syntax (import-chip CHIP-MODULE-PATH)))
(handle-buses ((PARTNAME-BUS-LEFT . BUS-LEFT-ARGS) BUS-RIGHT-EXPR) ...))))
@ -34,13 +34,13 @@
[(_ module-path)
(expand-import #'module-path)]))))
(require (for-syntax rackunit))
(define-macro (handle-buses BUS-ASSIGNMENTS ...)
(let-values
([(in-bus-assignments out-bus-assignments)
(syntax-case-partition #'(BUS-ASSIGNMENTS ...) ()
[((PREFIXED-WIRE . _) _)
(let ([pw (syntax-shift-phase-level #'PREFIXED-WIRE 0)])
(let ()
#|
phase 1 binding with `for-syntax` import active, no shift: (works)
'(#<module-path-index:("Nand.hdl.rkt")> a #<module-path-index:("Nand.hdl.rkt")> Nand-a 0 1 0)
@ -49,7 +49,18 @@ phase 1 binding without `for-syntax` import (only regular require), but shifted
phase 1 binding of `input-bus?` with shift 1:
'(#<module-path-index:("helper.rkt" br/demo/hdl/expander)> input-bus #<module-path-index:("helper.rkt" br/demo/hdl/expander)> input-bus 0 0 0)
|#
(syntax-local-eval (syntax-shift-phase-level #`(input-bus? #,pw) 1)))])])
(syntax-local-eval (with-syntax ([ib (syntax-shift-phase-level #'input-bus? 1)]
[pw (syntax-shift-phase-level #'PREFIXED-WIRE 3)])
#;(report (identifier-binding #'input-bus? 0))
#;(report (identifier-binding #'ib 1))
#;(report (identifier-binding #'PREFIXED-WIRE 0))
#;(report (identifier-binding #'pw 1))
#'(ib pw))))])])
(check-equal? (length in-bus-assignments) 2)
(check-equal? (length out-bus-assignments) 1)
(error 'stop)
(with-pattern
([(((IN-BUS IN-BUS-ARG ...) IN-BUS-VALUE) ...) in-bus-assignments]
[(IN-BUS-WRITE ...) (suffix-id #'(IN-BUS ...) "-write")]