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37 lines
1.3 KiB
Racket
37 lines
1.3 KiB
Racket
#lang debug racket/base
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(require racket/match
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(for-syntax racket/base)
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"quad.rkt")
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(provide (all-defined-out))
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(struct pipeline (passes)
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#:constructor-name make-pipeline
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#:guard (λ (procs name)
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(unless ((list-of procedure?) procs)
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(raise-argument-error 'bad-input-to-compiler-constructor "list of procedures" procs))
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procs)
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#:property prop:procedure
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(λ args (apply (apply compose1 (reverse (pipeline-passes (car args)))) (cdr args))))
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(define (compiler-append c passes)
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(make-pipeline (append (pipeline-passes c) passes)))
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(define-syntax (define-pass stx)
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(syntax-case stx ()
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[(_ (PASS-NAME ARG OTHER-ARG ...)
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#:pre PRECOND-PROC
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#:post POSTCOND-PROC
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EXPRS ...)
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#`(define PASS-NAME
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(make-pipeline
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(list
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(procedure-rename
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#,(syntax/loc stx
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(λ (ARG OTHER-ARG ...)
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(unless (PRECOND-PROC ARG)
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(raise-argument-error 'PASS-NAME (format "~a" 'PRECOND-PROC) ARG))
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(define res (let () EXPRS ...))
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(unless (POSTCOND-PROC res)
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(raise-argument-error 'PASS-NAME (format "~a" 'POSTCOND-PROC) res))
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res))
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'PASS-NAME))))])) |