154 lines
4.3 KiB
Scheme
154 lines
4.3 KiB
Scheme
![]() |
#!/usr/bin/env ikarus --script
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(define (racompile x)
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;;;
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(define-syntax record-case
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(lambda (x)
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(define (enumerate fld* i)
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(syntax-case fld* ()
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[() #'()]
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[(x . x*)
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(with-syntax ([i i] [i* (enumerate #'x* (fx+ i 1))])
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#'(i . i*))]))
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(define (generate-body ctxt cls*)
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(syntax-case cls* (else)
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[() (with-syntax ([x x]) #'(error #f "unmatched ~s in ~s" v #'x))]
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[([else b b* ...]) #'(begin b b* ...)]
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[([(rec-name rec-field* ...) b b* ...] . rest) (identifier? #'rec-name)
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(with-syntax ([altern (generate-body ctxt #'rest)]
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[(id* ...) (enumerate #'(rec-field* ...) 0)]
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[rtd #'(type-descriptor rec-name)])
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#'(if (#%$record/rtd? v rtd)
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(let ([rec-field* (#%$record-ref v id*)] ...)
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b b* ...)
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altern))]))
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(syntax-case x ()
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[(_ expr cls* ...)
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(with-syntax ([body (generate-body #'_ #'(cls* ...))])
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#'(let ([v expr]) body))])))
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;;;
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(define-record constant (val))
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(define (mkconst v) (make-constant v))
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(define-record int (val))
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(define (mkint v) (make-int v))
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(define-record set (lhs rhs))
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(define (mkset x v) (make-set x v))
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(define-record reg (name))
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(define (mkreg x) (make-reg x))
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(define-record primcall (op rand*))
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(define (mkprm op . rand*) (make-primcall op rand*))
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(define-record seq (e0 e1))
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(define (mkseq e0 e1) (make-seq e0 e1))
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;;;
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(define (recordize x)
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(define who 'recordize)
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;;;
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(define (E x r)
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(cond
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[(pair? x)
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(case (car x)
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[(quote) (mkconst (cadr x))]
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[else (error who "invalid expression ~s" x)])]
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[else (error who "invalid expression ~s" x)]))
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;;;
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(E x '()))
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;;;
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(define (specify-representation x)
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(define who 'specify-representation)
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;;;
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(define fixnum-scale 4)
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;;;
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(define (immediate? c)
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(or (fixnum? c)))
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;;;
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(define (immediate-rep c)
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(cond
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[(fixnum? c) (mkint (* c fixnum-scale))]
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[else (error 'immediate-rep "invalid ~s" c)]))
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;;;
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(define (Tail x)
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(record-case x
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[(constant c)
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(if (immediate? c)
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(immediate-rep c)
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x)]
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[else (error who "invalid tail ~s" x)]))
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;;;
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(Tail x))
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;;;
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(define (impose-calling-convention x)
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(define who 'impose-calling-convention)
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;;;
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(define rv-register (mkreg '%eax))
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;;;
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(define (Tail x)
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(record-case x
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[(constant c)
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(mkseq (mkset rv-register x)
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(mkprm 'return rv-register))]
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[else (error who "invalid tail ~s" x)]))
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;;;
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(Tail x))
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;;;
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(define (linearize x)
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(define who 'linearize)
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;;;
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(define (op x)
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(record-case x
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[(register r) r]
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[(constant c) `(obj ,c)]
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[(int i) `(int ,i)]
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;;;
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(define (Effect x ac)
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(record-case x
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[(seq e0 e1)
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(Effect e0 (Effect e1 ac))]
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[(set targ v)
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(cons `(movl ,(op v) ,(op targ)) ac)]
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[else (error who "invalid effect ~s" x)]))
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;;;
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(define (Tail x ac)
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(record-case x
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[(seq e0 e1)
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(Effect e0 (Tail e1 ac))]
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[(primcall op rands)
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(case op
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[(return)
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(cons '(ret) ac)]
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[else (error who "invalid tail prim ~s" op)])]
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[else (error who "invalid tail ~s" x)]))
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;;;
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(list (Tail x '())))
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;;;
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(define (compile x)
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(let* ([x (expand x)]
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[x (recordize x)]
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[x (specify-representation x)]
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[x (impose-calling-convention x)]
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[x* (linearize x)]
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[code (car (#%list*->code*
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(lambda (x) #f)
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x*))])
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((#%$code->closure code))))
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(compile x))
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(define-syntax add-tests-with-string-output
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(syntax-rules (=>)
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[(_ name [expr* => str*] ...)
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(begin
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(printf "SECTION ~a ...\n" 'name)
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(let ([str str*]
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[expr 'expr*])
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(printf "testing ~s\n" expr)
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(let ([r (with-output-to-string
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(lambda ()
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(write (racompile expr))
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(newline)))])
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(unless (string=? r str)
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(error #f "expected ~s, got ~s\n" str r))))
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...)]))
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(load "tests/tests-1.1-req.scm")
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