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[vector] works for no-colon, too

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This commit is contained in:
ben 2016-03-09 03:14:45 -05:00
parent 62109f33db
commit cdae13498c
6 changed files with 380 additions and 358 deletions
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12
private/common.rkt
View File

@ -20,6 +20,7 @@
;; TODO
make-alias
make-keyword-alias
;; TODO
)
@ -125,9 +126,16 @@
(or (parser stx)
(syntax-parse stx
[_:id
#:with id-stx (format-id stx "~a" id-sym)
#:with id-stx (format-id id-sym "~a" (syntax-e id-sym))
(syntax/loc stx id-stx)]
[(_ e* ...)
#:with id-stx (format-id stx "~a" id-sym)
#:with id-stx (format-id id-sym "~a" (syntax-e id-sym))
#:with app-stx (format-id stx "#%app")
(syntax/loc stx (app-stx id-stx e* ...))])))
(define ((make-keyword-alias id-sym parser) stx)
(or (parser stx)
(syntax-parse stx
[(_ e* ...)
#:with id-stx (format-id stx "~a" id-sym)
(syntax/loc stx (id-stx e* ...))])))

34
private/math.rkt
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@ -3,8 +3,6 @@
;; Constant-folding math operators.
;; Where possible, they simplify their arguments.
;; TODO the or- stuff is not so pretty, but it's working anyway
(provide
+: -: *: /:
;; Same signature as the racket/base operators,
@ -16,6 +14,7 @@
;; --
(for-syntax
stx->num
nat/expand
int/expand
num/expand)
@ -36,6 +35,14 @@
(define (division-by-zero stx)
(raise-syntax-error '/ "division by zero" stx))
(define (stx->num stx)
(syntax-parse stx
[v:num/expand
(if (identifier? #'v.expanded)
(quoted-stx-value? #'v.evidence)
(quoted-stx-value? #'v.expanded))]
[_ #f]))
;; Simplify a list of expressions using an associative binary operator.
;; Return either:
;; - A numeric value
@ -53,21 +60,18 @@
prev
(reverse (if prev (cons prev acc) acc)))
;; else: pop the next argument from e*, fold if it's a constant
(syntax-parse (car e*)
[v:num/expand
(define v (or (quoted-stx-value? #'v.expanded)
(quoted-stx-value? #'v.evidence)))
(let ([v (stx->num (car e*))])
(if v
;; then: reduce the number
(if prev
;; Watch for division-by-zero
(if (and (zero? v) (eq? / op))
(division-by-zero stx)
(loop (op prev v) acc (cdr e*)))
(loop v acc (cdr e*)))]
[v
(loop v acc (cdr e*)))
;; else: save value in acc
(let ([acc+ (cons (car e*) (if prev (cons prev acc) acc))])
(loop #f acc+ (cdr e*)))])))]
(loop #f acc+ (cdr e*)))))))]
[else #f]))
(define-values (nat-key nat? nat-define nat-let)
@ -85,8 +89,8 @@
;; -----------------------------------------------------------------------------
(define-syntax define-num: (make-alias 'define num-define))
(define-syntax let-num: (make-alias 'let num-let))
(define-syntax define-num: (make-keyword-alias 'define num-define))
(define-syntax let-num: (make-keyword-alias 'let num-let))
(define-syntax make-numeric-operator
(syntax-parser
@ -109,11 +113,9 @@
(define-syntax expt: (make-alias 'expt
(lambda (stx) (syntax-parse stx
[(_ n1:num/expand n2:num/expand)
(let ([v1 (or (quoted-stx-value? #'n1.expanded)
(quoted-stx-value? #'n1.evidence))]
[v2 (or (quoted-stx-value? #'n2.expanded)
(quoted-stx-value? #'n2.evidence))])
[(_ n1 n2)
(let ([v1 (stx->num #'n1)]
[v2 (stx->num #'n2)])
(and v1 v2 ;; Should never fail
(quasisyntax/loc stx #,(expt v1 v2))))]
[_ #f]))))

257
private/vector.rkt Normal file
View File

@ -0,0 +1,257 @@
#lang typed/racket/base
(provide
define-vector:
let-vector:
vector-length:
vector-ref:
vector-set!:
vector-map:
vector-map!:
vector-append:
vector->list:
vector->immutable-vector:
vector-fill!:
vector-take:
vector-take-right:
vector-drop:
vector-drop-right:
; vector-split-at:
; vector-split-at-right:
;; --- private
(for-syntax parse-vector-length)
)
;; -----------------------------------------------------------------------------
(require
(only-in racket/unsafe/ops
unsafe-vector-set!
unsafe-vector-ref)
trivial/private/math
racket/vector
(for-syntax
trivial/private/common
typed/racket/base
syntax/parse))
;; =============================================================================
(begin-for-syntax
(define (small-vector-size? n)
(< n 20))
(define (vector-bounds-error sym v-stx i)
(raise-syntax-error
sym
"Index out-of-bounds"
(syntax->datum v-stx)
i
(list v-stx)))
(define (parse-vector-length stx)
(syntax-parse stx #:literals (#%plain-app vector make-vector build-vector)
[(~or '#(e* ...)
#(e* ...)
;; TODO #{} #[] #6{} ...
(#%plain-app vector e* ...)
(vector e* ...))
(length (syntax-e #'(e* ...)))]
[(~or (make-vector n e* ...)
(#%plain-app make-vector n e* ...)
(build-vector n e* ...)
(#%plain-app build-vector n e* ...))
#:with n-stx (stx->num #'n)
#:when (syntax-e #'n-stx)
(syntax-e #'n-stx)]
[_ #f]))
(define-values (vector-length-key vec? vec-define vec-let)
(make-value-property 'vector:length parse-vector-length))
(define-syntax-class/predicate vector/length vec?)
)
;; -----------------------------------------------------------------------------
(define-syntax define-vector: (make-keyword-alias 'define vec-define))
(define-syntax let-vector: (make-keyword-alias 'let vec-let))
(define-syntax vector-length: (make-alias #'vector-length
(lambda (stx) (syntax-parse stx
[(_ v:vector/length)
(syntax/loc stx 'v.evidence)]
[_ #f]))))
(define-syntax vector-ref: (make-alias #'vector-ref
(lambda (stx) (syntax-parse stx
[(_ v:vector/length e)
#:with i-stx (stx->num #'e)
#:when (syntax-e #'i-stx)
(let ([i (syntax-e #'i-stx)])
(unless (< i (syntax-e #'v.evidence))
(vector-bounds-error 'vector-ref: #'v i))
(syntax/loc stx (unsafe-vector-ref v.expanded 'i-stx)))]
[_ #f]))))
(define-syntax vector-set!: (make-alias #'vector-set!
(lambda (stx) (syntax-parse stx
[(_ v:vector/length e val)
#:with i-stx (stx->num #'e)
#:when (syntax-e #'i-stx)
(let ([i (syntax-e #'i-stx)])
(unless (< i (syntax-e #'v.evidence))
(vector-bounds-error 'vector-set!: #'v i))
(syntax/loc stx (unsafe-vector-set! v.expanded 'i-stx val)))]
[_ #f]))))
(define-syntax vector-map: (make-alias #'vector-map
(lambda (stx) (syntax-parse stx
[(_ f v:vector/length)
#:with f+ (gensym 'f)
#:with v+ (gensym 'v)
#:with v++ (syntax-property
(if (small-vector-size? (syntax-e #'v.evidence))
(with-syntax ([(i* ...) (for/list ([i (in-range (syntax-e #'v.evidence))]) i)])
(syntax/loc stx
(let ([f+ f] [v+ v.expanded])
(vector (f+ (unsafe-vector-ref v+ 'i*)) ...))))
(syntax/loc stx
(let ([f+ f] [v+ v.expanded])
(build-vector 'v.evidence (lambda ([i : Integer])
(f+ (vector-ref: v+ i)))))))
vector-length-key
(syntax-e #'v.evidence))
(syntax/loc stx v++)]
[_ #f]))))
(define-syntax vector-map!: (make-alias #'vector-map!
(lambda (stx) (syntax-parse stx
[(_ f v:vector/length)
#:with f+ (gensym 'f)
#:with v+ (gensym 'v)
#:with v++ (syntax-property
#'(let ([f+ f]
[v+ v.expanded])
(for ([i (in-range 'v.evidence)])
(unsafe-vector-set! v+ i (f+ (unsafe-vector-ref v+ i))))
v+)
vector-length-key
(syntax-e #'v.evidence))
(syntax/loc stx v++)]
[_ #f]))))
(define-syntax vector-append: (make-alias #'vector-append
(lambda (stx) (syntax-parse stx
[(_ v1:vector/length v2:vector/length)
#:with v1+ (gensym 'v1)
#:with v2+ (gensym 'v2)
(define l1 (syntax-e #'v1.evidence))
(define l2 (syntax-e #'v2.evidence))
(syntax-property
(if (and (small-vector-size? l1)
(small-vector-size? l2))
(with-syntax ([(i1* ...) (for/list ([i (in-range l1)]) i)]
[(i2* ...) (for/list ([i (in-range l2)]) i)])
(syntax/loc stx
(let ([v1+ v1.expanded]
[v2+ v2.expanded])
(vector (vector-ref: v1+ i1*) ...
(vector-ref: v2+ i2*) ...))))
(quasisyntax/loc stx
(let ([v1+ v1.expanded]
[v2+ v2.expanded])
(build-vector
#,(+ l1 l2)
(lambda (i)
(if (< i '#,l1)
(unsafe-vector-ref v1+ i)
(unsafe-vector-ref v2+ i)))))))
vector-length-key
(+ l1 l2))]
[_ #f]))))
(define-syntax vector->list: (make-alias #'vector->list
(lambda (stx) (syntax-parse stx
[(_ v:vector/length)
#:with v+ (gensym 'v)
(define len (syntax-e #'v.evidence))
(if (small-vector-size? len)
(with-syntax ([(i* ...) (for/list ([i (in-range len)]) i)])
(syntax/loc stx
(let ([v+ v.expanded])
(list (unsafe-vector-ref v+ i*) ...))))
(syntax/loc stx
(let ([v+ v.expanded])
(build-list 'v.evidence (lambda (i) (unsafe-vector-ref v+ i))))))]
[_ #f]))))
(define-syntax vector->immutable-vector: (make-alias #'vector->immutable-vector
(lambda (stx) (syntax-parse stx
[(_ v:vector/length)
(syntax-property
(syntax/loc stx (vector->immutable-vector v.expanded))
vector-length-key
(syntax-e #'v.evidence))]
[_ #f]))))
(define-syntax vector-fill!: (make-alias #'vector-fill!
(lambda (stx) (syntax-parse stx
[(_ v:vector/length val)
#:with v+ (gensym 'v)
(define len (syntax-e #'v.evidence))
(syntax-property
(syntax/loc stx
(let ([v+ v.expanded])
(for ([i (in-range 'v.evidence)])
(unsafe-vector-set! v+ i val))))
vector-length-key
(syntax-e #'v.evidence))]
[_ #f]))))
(begin-for-syntax (define-syntax-rule (make-slice-op left? take?)
(lambda (stx)
(syntax-parse stx
[(op-name v:vector/length n)
#:with n-stx (stx->num #'n)
#:when (exact-nonnegative-integer? (syntax-e #'n-stx))
#:with (lo hi)
(if 'take?
(if 'left?
(list 0 (syntax-e #'n-stx))
(list
(- (syntax-e #'v.evidence) (syntax-e #'n-stx))
(syntax-e #'v.evidence)))
(if 'left?
(list (syntax-e #'n-stx) (syntax-e #'v.evidence))
(list 0 (- (syntax-e #'v.evidence) (syntax-e #'n-stx)))))
#:with n+ (gensym 'n)
#:with v+ (gensym 'v)
(unless (<= (syntax-e #'n-stx) (syntax-e #'v.evidence))
(vector-bounds-error (syntax-e #'op-name) #'v
(if 'take? (if 'left? (syntax-e #'hi) (syntax-e #'lo))
(if 'left? (syntax-e #'lo) (syntax-e #'hi)))))
(syntax-property
(syntax/loc stx
(let ([v+ v.expanded]
[n+ (-: 'hi 'lo)])
(build-vector n+ (lambda ([i : Integer]) (unsafe-vector-ref v+ (+: i 'lo))))))
vector-length-key
(syntax-e #'v.evidence))]
[(op-name v n:int/expand)
(vector-bounds-error (syntax-e #'op-name) #'v (stx->num #'n.expanded))]
[_ #f]))))
(define-syntax vector-take:
(make-alias #'vector-take (make-slice-op #t #t)))
(define-syntax vector-take-right:
(make-alias #'vector-take-right (make-slice-op #f #t)))
(define-syntax vector-drop-right:
(make-alias #'vector-drop-right (make-slice-op #f #f)))
(define-syntax vector-drop:
(make-alias #'vector-drop (make-slice-op #t #f)))

102
test/vector-pass.rkt
View File

@ -6,58 +6,6 @@
trivial/vector
typed/rackunit)
(require/typed (for-template trivial/vector)
(parse-vector-length (-> Syntax (Option Natural))))
;; -- parse-vector-length
;; --- '#
(check-equal?
(parse-vector-length #'#())
0)
; (check-equal?
; (parse-vector-length #`#,'#(1 2))
; 2)
(check-equal?
(parse-vector-length #'#(1 2 3 4))
4)
(check-equal?
(parse-vector-length #'#(a b c e s aue d al))
8)
;; --- vector
(check-equal?
(parse-vector-length #'(vector))
0)
(check-equal?
(parse-vector-length #'(vector 0 1))
2)
;; --- make-vector
(check-equal?
(parse-vector-length #'(make-vector -1 1))
#f)
(check-equal?
(parse-vector-length #'(make-vector 0 8))
0)
(check-equal?
(parse-vector-length #'(make-vector 3 3))
3)
(check-equal?
(parse-vector-length #'(make-vector 99))
99)
;; --- build-vector
(check-equal?
;; Type error
(parse-vector-length #'(build-vector -1))
#f)
(check-equal?
(parse-vector-length #'(build-vector 0 (lambda (x) x)))
0)
(check-equal?
(parse-vector-length #'(build-vector 3 (lambda (x) 8)))
3)
(check-equal?
(parse-vector-length #'(build-vector 61 add1))
61)
;; -- vector-length:
(check-equal?
(vector-length: '#()) 0)
@ -304,3 +252,53 @@
(check-equal? (vector-ref: v 0) 1))
;; -- let-vector:
)
;; -----------------------------------------------------------------------------
; ;; -- parse-vector-length
; ;; --- '#
; (check-equal?
; (parse-vector-length #'#())
; 0)
;; (check-equal?
;; (parse-vector-length #`#,'#(1 2))
;; 2)
; (check-equal?
; (parse-vector-length #'#(1 2 3 4))
; 4)
; (check-equal?
; (parse-vector-length #'#(a b c e s aue d al))
; 8)
; ;; --- vector
; (check-equal?
; (parse-vector-length #'(vector))
; 0)
; (check-equal?
; (parse-vector-length #'(vector 0 1))
; 2)
; ;; --- make-vector
; (check-equal?
; (parse-vector-length #'(make-vector -1 1))
; #f)
; (check-equal?
; (parse-vector-length #'(make-vector 0 8))
; 0)
; (check-equal?
; (parse-vector-length #'(make-vector 3 3))
; 3)
; (check-equal?
; (parse-vector-length #'(make-vector 99))
; 99)
; ;; --- build-vector
; (check-equal?
; ;; Type error
; (parse-vector-length #'(build-vector -1))
; #f)
; (check-equal?
; (parse-vector-length #'(build-vector 0 (lambda (x) x)))
; 0)
; (check-equal?
; (parse-vector-length #'(build-vector 3 (lambda (x) 8)))
; 3)
; (check-equal?
; (parse-vector-length #'(build-vector 61 add1))
; 61)

298
vector.rkt
View File

@ -1,8 +1,8 @@
#lang typed/racket/base
;; TOOD abstract some designs
(provide
(all-from-out racket/vector)
define-vector:
let-vector:
vector-length:
@ -20,288 +20,26 @@
vector-drop-right:
; vector-split-at:
; vector-split-at-right:
;; --- private
(for-syntax parse-vector-length)
)
;; -----------------------------------------------------------------------------
(require
(only-in racket/unsafe/ops
unsafe-vector-set!
unsafe-vector-ref)
racket/vector
trivial/math
(for-syntax
typed/racket/base
racket/syntax
syntax/id-table
syntax/parse
syntax/stx
trivial/private/common
(only-in trivial/private/vector
define-vector:
let-vector:
vector-length:
vector-ref:
vector-set!:
vector-map:
vector-map!:
vector-append:
vector->list:
vector->immutable-vector:
vector-fill!:
vector-take:
vector-take-right:
vector-drop:
vector-drop-right:
))
;; =============================================================================
(define-for-syntax vector-length-key 'vector:length)
(define-for-syntax id+vector-length (make-free-id-table))
(begin-for-syntax (define-syntax-class vector/length
#:attributes (expanded length)
(pattern e
#:with e+ (expand-expr #'e)
#:with len (parse-vector-length #'e+)
#:when (syntax-e #'len)
#:attr expanded #'e+
#:attr length #'len)
))
(define-syntax (define-vector: stx)
(syntax-parse stx
[(_ name:id v:vector/length)
(free-id-table-set! id+vector-length #'name (syntax-e #'v.length))
#'(define name v.expanded)]
[(_ e* ...)
#'(define e* ...)]))
(define-syntax (let-vector: stx)
(syntax-parse stx
[(_ ([name*:id v*:vector/length] ...) e* ...)
#'(let ([name* v*.expanded] ...)
(let-syntax ([name* (make-rename-transformer
(syntax-property #'name*
vector-length-key
'v*.length))] ...)
e* ...))]
[(_ e* ...)
#'(let e* ...)]))
(define-for-syntax (vector-bounds-error sym v-stx i)
(raise-syntax-error
sym
"Index out-of-bounds"
(syntax->datum v-stx)
i
(list v-stx)))
(define-syntax (vector-length: stx)
(syntax-parse stx
[(_ v:vector/length)
(syntax/loc stx 'v.length)]
[_:id
(syntax/loc stx vector-length)]
[(_ e* ...)
(syntax/loc stx (vector-length e* ...))]))
(define-syntax (vector-ref: stx)
(syntax-parse stx
[(_ v:vector/length i:nat/expand)
(unless (< (syntax-e #'i.expanded) (syntax-e #'v.length))
(vector-bounds-error 'vector-ref: #'v (syntax-e #'i.expanded)))
(syntax/loc stx (unsafe-vector-ref v.expanded 'i.expanded))]
[_:id
(syntax/loc stx vector-ref)]
[(_ e* ...)
(syntax/loc stx (vector-ref e* ...))]))
(define-syntax (vector-set!: stx)
(syntax-parse stx
[(_ v:vector/length i:nat/expand val)
(unless (< (syntax-e #'i.expanded) (syntax-e #'v.length))
(vector-bounds-error 'vector-set!: #'v (syntax-e #'i.expanded)))
(syntax/loc stx (unsafe-vector-set! v.expanded 'i.expanded val))]
[_:id
(syntax/loc stx vector-set!)]
[(_ e* ...)
(syntax/loc stx (vector-set! e* ...))]))
(define-syntax (vector-map: stx)
(syntax-parse stx
[(_ f v:vector/length)
#:with f+ (gensym 'f)
#:with v+ (gensym 'v)
#:with v++ (syntax-property
(if (small-vector-size? (syntax-e #'v.length))
(with-syntax ([(i* ...) (for/list ([i (in-range (syntax-e #'v.length))]) i)])
(syntax/loc stx
(let ([f+ f] [v+ v.expanded])
(vector (f+ (unsafe-vector-ref v+ 'i*)) ...))))
(syntax/loc stx
(let ([f+ f] [v+ v.expanded])
(build-vector 'v.length (lambda ([i : Integer])
(f+ (vector-ref: v+ i)))))))
vector-length-key
(syntax-e #'v.length))
(syntax/loc stx v++)]
[_:id
(syntax/loc stx vector-map)]
[(_ e* ...)
(syntax/loc stx (vector-map e* ...))]))
(define-syntax (vector-map!: stx)
(syntax-parse stx
[(_ f v:vector/length)
#:with f+ (gensym 'f)
#:with v+ (gensym 'v)
#:with v++ (syntax-property
#'(let ([f+ f]
[v+ v.expanded])
(for ([i (in-range 'v.length)])
(unsafe-vector-set! v+ i (f+ (unsafe-vector-ref v+ i))))
v+)
vector-length-key
(syntax-e #'v.length))
(syntax/loc stx v++)]
[_:id
(syntax/loc stx vector-map!)]
[(_ e* ...)
(syntax/loc stx (vector-map! e* ...))]))
(define-syntax (vector-append: stx)
(syntax-parse stx
[(_ v1:vector/length v2:vector/length)
#:with v1+ (gensym 'v1)
#:with v2+ (gensym 'v2)
(define l1 (syntax-e #'v1.length))
(define l2 (syntax-e #'v2.length))
(syntax-property
(if (and (small-vector-size? l1)
(small-vector-size? l2))
(with-syntax ([(i1* ...) (for/list ([i (in-range l1)]) i)]
[(i2* ...) (for/list ([i (in-range l2)]) i)])
(syntax/loc stx
(let ([v1+ v1.expanded]
[v2+ v2.expanded])
(vector (vector-ref: v1+ i1*) ...
(vector-ref: v2+ i2*) ...))))
(quasisyntax/loc stx
(let ([v1+ v1.expanded]
[v2+ v2.expanded])
(build-vector
#,(+ l1 l2)
(lambda (i)
(if (< i '#,l1)
(unsafe-vector-ref v1+ i)
(unsafe-vector-ref v2+ i)))))))
vector-length-key
(+ l1 l2))]
[_:id
(syntax/loc stx vector-append)]
[(_ e* ...)
(syntax/loc stx (vector-append e* ...))]))
(define-syntax (vector->list: stx)
(syntax-parse stx
[(_ v:vector/length)
#:with v+ (gensym 'v)
(define len (syntax-e #'v.length))
(if (small-vector-size? len)
(with-syntax ([(i* ...) (for/list ([i (in-range len)]) i)])
(syntax/loc stx
(let ([v+ v.expanded])
(list (unsafe-vector-ref v+ i*) ...))))
(syntax/loc stx
(let ([v+ v.expanded])
(build-list 'v.length (lambda (i) (unsafe-vector-ref v+ i))))))]
[_:id
(syntax/loc stx vector->list)]
[(_ e* ...)
(syntax/loc stx (vector->list e* ...))]))
(define-syntax (vector->immutable-vector: stx)
(syntax-parse stx
[(_ v:vector/length)
(syntax-property
(syntax/loc stx (vector->immutable-vector v.expanded))
vector-length-key
(syntax-e #'v.length))]
[_:id
(syntax/loc stx vector->immutable-vector)]
[(_ e* ...)
(syntax/loc stx (vector->immutable-vector e* ...))]))
(define-syntax (vector-fill!: stx)
(syntax-parse stx
[(_ v:vector/length val)
#:with v+ (gensym 'v)
(define len (syntax-e #'v.length))
(syntax-property
(syntax/loc stx
(let ([v+ v.expanded])
(for ([i (in-range 'v.length)])
(unsafe-vector-set! v+ i val))))
vector-length-key
(syntax-e #'v.length))]
[_:id
(syntax/loc stx vector->fill!)]
[(_ e* ...)
(syntax/loc stx (vector->fill! e* ...))]))
(begin-for-syntax (define-syntax-rule (make-slice-op op-name left? take?)
(lambda (stx)
(syntax-parse stx
[(_ v:vector/length n:nat/expand)
#:with (lo hi)
(if 'take?
(if 'left?
(list 0 (syntax-e #'n.expanded))
(list
(- (syntax-e #'v.length) (syntax-e #'n.expanded))
(syntax-e #'v.length)))
(if 'left?
(list (syntax-e #'n.expanded) (syntax-e #'v.length))
(list 0 (- (syntax-e #'v.length) (syntax-e #'n.expanded)))))
#:with n+ (gensym 'n)
#:with v+ (gensym 'v)
(unless (<= (syntax-e #'n.expanded) (syntax-e #'v.length))
(vector-bounds-error 'op-name #'v
(if 'take? (if 'left? (syntax-e #'hi) (syntax-e #'lo))
(if 'left? (syntax-e #'lo) (syntax-e #'hi)))))
(syntax-property
(syntax/loc stx
(let ([v+ v.expanded]
[n+ (-: 'hi 'lo)])
(build-vector n+ (lambda ([i : Integer]) (unsafe-vector-ref v+ (+: i 'lo))))))
vector-length-key
(syntax-e #'v.length))]
[(_ v n:int/expand)
(vector-bounds-error 'op-name #'v (syntax-e #'n.expanded))]
[_:id
(syntax/loc stx op-name)]
[(_ e* (... ...))
(syntax/loc stx (op-name e* (... ...)))]))))
(define-syntax vector-take: (make-slice-op vector-take #t #t))
(define-syntax vector-take-right: (make-slice-op vector-take-right #f #t))
(define-syntax vector-drop-right: (make-slice-op vector-drop-right #f #f))
(define-syntax vector-drop: (make-slice-op vector-drop #t #f))
;; -----------------------------------------------------------------------------
(define-for-syntax (small-vector-size? n)
(< n 20))
;; Assume `stx` is creating a vector; get the length of the vector to-be-made
(define-for-syntax (parse-vector-length stx)
(cond
[(syntax-property stx vector-length-key)
=> (lambda (x) x)]
[(identifier? stx)
(free-id-table-ref id+vector-length stx #f)]
[else
(syntax-parse stx #:literals (#%plain-app vector make-vector build-vector)
[(~or '#(e* ...)
#(e* ...)
;; TODO #{} #[] #6{} ...
(#%plain-app vector e* ...)
(vector e* ...))
(length (syntax->list #'(e* ...)))]
[(~or (make-vector n e* ...)
(#%plain-app make-vector n e* ...)
(build-vector n e* ...)
(#%plain-app build-vector n e* ...))
(and (exact-nonnegative-integer? (syntax-e #'n)) (syntax-e #'n))]
[_
#f])]))

19
vector/no-colon.rkt Normal file
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@ -0,0 +1,19 @@
#lang typed/racket/base
(provide (rename-out
(define-vector: define-vector)
(let-vector: let-vector)
(vector-length: vector-length)
(vector-ref: vector-ref)
(vector-set!: vector-set!)
(vector-map: vector-map)
(vector-map!: vector-map!)
(vector-append: vector-append)
(vector->list: vector->list)
(vector->immutable-vector: vector->immutable-vector)
(vector-fill!: vector-fill!)
(vector-take: vector-take)
(vector-take-right: vector-take-right)
(vector-drop: vector-drop)
(vector-drop-right: vector-drop-right)
))
(require trivial/vector)