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#lang typed/racket/base
(require racket/performance-hint
"../unsafe.rkt"
"utils.rkt")
(provide (all-defined-out))
(define-syntax-rule (for-each-array+data-index ds-expr f-expr)
(let*: ([ds : Indexes ds-expr]
[dims : Index (vector-length ds)])
(define-syntax-rule (f js j)
((ann f-expr (Indexes Nonnegative-Fixnum -> Void)) js j))
(cond
[(= dims 0) (f ds 0)]
[else
(define: js : Indexes (make-vector dims 0))
(case dims
[(1) (define: d0 : Index (unsafe-vector-ref ds 0))
(let: j0-loop : Void ([j0 : Nonnegative-Fixnum 0])
(when (j0 . < . d0)
(unsafe-vector-set! js 0 j0)
(f js j0)
(j0-loop (+ j0 1))))]
[(2) (define: d0 : Index (unsafe-vector-ref ds 0))
(define: d1 : Index (unsafe-vector-ref ds 1))
(let: j0-loop : Void ([j0 : Nonnegative-Fixnum 0]
[j : Nonnegative-Fixnum 0])
(when (j0 . < . d0)
(unsafe-vector-set! js 0 j0)
(let: j1-loop : Void ([j1 : Nonnegative-Fixnum 0]
[j : Nonnegative-Fixnum j])
(cond [(j1 . < . d1)
(unsafe-vector-set! js 1 j1)
(f js j)
(j1-loop (+ j1 1) (unsafe-fx+ j 1))]
[else
(j0-loop (+ j0 1) j)]))))]
[else (let: i-loop : Nonnegative-Fixnum ([i : Nonnegative-Fixnum 0]
[j : Nonnegative-Fixnum 0])
(cond [(i . < . dims)
(define: di : Index (unsafe-vector-ref ds i))
(let: ji-loop : Nonnegative-Fixnum ([ji : Nonnegative-Fixnum 0]
[j : Nonnegative-Fixnum j])
(cond [(ji . < . di)
(unsafe-vector-set! js i ji)
(ji-loop (+ ji 1) (i-loop (+ i 1) j))]
[else j]))]
[else (f js j)
(unsafe-fx+ j 1)]))
(void)])])))
(define-syntax-rule (for-each-array-index ds-expr f-expr)
(let*: ([ds : Indexes ds-expr]
[dims : Index (vector-length ds)])
(define-syntax-rule (f js)
((ann f-expr (Indexes -> Void)) js))
(cond
[(= dims 0) (f ds)]
[else
(define: js : Indexes (make-vector dims 0))
(case dims
[(1) (define: d0 : Index (unsafe-vector-ref ds 0))
(let: j0-loop : Void ([j0 : Nonnegative-Fixnum 0])
(when (j0 . < . d0)
(unsafe-vector-set! js 0 j0)
(f js)
(j0-loop (+ j0 1))))]
[(2) (define: d0 : Index (unsafe-vector-ref ds 0))
(define: d1 : Index (unsafe-vector-ref ds 1))
(let: j0-loop : Void ([j0 : Nonnegative-Fixnum 0])
(when (j0 . < . d0)
(unsafe-vector-set! js 0 j0)
(let: j1-loop : Void ([j1 : Nonnegative-Fixnum 0])
(cond [(j1 . < . d1)
(unsafe-vector-set! js 1 j1)
(f js)
(j1-loop (+ j1 1))]
[else
(j0-loop (+ j0 1))]))))]
[else (let: i-loop : Void ([i : Nonnegative-Fixnum 0])
(cond [(i . < . dims)
(define: di : Index (unsafe-vector-ref ds i))
(let: ji-loop : Void ([ji : Nonnegative-Fixnum 0])
(when (ji . < . di)
(unsafe-vector-set! js i ji)
(i-loop (+ i 1))
(ji-loop (+ ji 1))))]
[else (f js)]))])])))
(define-syntax-rule (for-each-data-index ds-expr f-expr)
(let*: ([ds : Indexes ds-expr]
[dims : Index (vector-length ds)])
(define-syntax-rule (f j)
((ann f-expr (Nonnegative-Fixnum -> Void)) j))
(cond
[(= dims 0) (f 0)]
[else
(case dims
[(1) (define: d0 : Index (unsafe-vector-ref ds 0))
(let: j0-loop : Void ([j0 : Nonnegative-Fixnum 0])
(when (j0 . < . d0)
(f j0)
(j0-loop (+ j0 1))))]
[(2) (define: d0 : Index (unsafe-vector-ref ds 0))
(define: d1 : Index (unsafe-vector-ref ds 1))
(let: j0-loop : Void ([j0 : Nonnegative-Fixnum 0]
[j : Nonnegative-Fixnum 0])
(when (j0 . < . d0)
(let: j1-loop : Void ([j1 : Nonnegative-Fixnum 0]
[j : Nonnegative-Fixnum j])
(cond [(j1 . < . d1)
(f j)
(j1-loop (+ j1 1) (unsafe-fx+ j 1))]
[else
(j0-loop (+ j0 1) j)]))))]
[else (let: i-loop : Nonnegative-Fixnum ([i : Nonnegative-Fixnum 0]
[j : Nonnegative-Fixnum 0])
(cond [(i . < . dims)
(define: di : Index (unsafe-vector-ref ds i))
(let: ji-loop : Nonnegative-Fixnum ([ji : Nonnegative-Fixnum 0]
[j : Nonnegative-Fixnum j])
(cond [(ji . < . di)
(ji-loop (+ ji 1) (i-loop (+ i 1) j))]
[else j]))]
[else (f j)
(unsafe-fx+ j 1)]))
(void)])])))
(define-syntax-rule (inline-build-array-data ds-expr g-expr A)
(let*: ([ds : Indexes ds-expr]
[dims : Index (vector-length ds)])
(define-syntax-rule (g js j)
((ann g-expr (Indexes Nonnegative-Fixnum -> A)) js j))
(define: size : Nonnegative-Fixnum
(let: loop : Nonnegative-Fixnum ([k : Nonnegative-Fixnum 0] [size : Nonnegative-Fixnum 1])
(cond [(k . < . dims) (loop (+ k 1) (unsafe-fx* size (unsafe-vector-ref ds k)))]
[else size])))
(cond [(= size 0) (ann (vector) (Vectorof A))]
[else
(define: js0 : Indexes (make-vector dims 0))
(define: vs : (Vectorof A) (make-vector size (g js0 0)))
(for-each-array+data-index ds (λ (js j) (unsafe-vector-set! vs j (g js j))))
vs])))
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