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sugar/debug.rkt

42 lines
1.1 KiB
Racket

#lang racket/base
(require (for-syntax racket/base racket/syntax))
(provide (all-defined-out))
(define-syntax (report stx)
(syntax-case stx ()
[(_ expr) #'(report expr expr)]
[(_ expr name)
#'(begin
(displayln (format "~a = ~v" 'name expr) (current-error-port))
expr)]))
(define-syntax (report* stx)
(syntax-case stx ()
[(_ expr ...) (datum->syntax stx `(begin ,@(map (λ(arg) `(report ,arg)) (syntax->datum #'(expr ...)))))]))
(define-syntax-rule (repeat num expr ...)
(for/last ([i (in-range num)])
expr ...))
(define-syntax-rule (time-repeat num expr ...)
(time (repeat num expr ...)))
(define-syntax (time-repeat* stx)
(syntax-case stx ()
[(_ num expr ...)
(let ([num (syntax->datum #'num)])
(datum->syntax stx `(values ,@(map (λ(arg) `(time-repeat ,num ,arg)) (syntax->datum #'(expr ...))))))]))
(define-syntax (compare stx)
(syntax-case stx ()
[(_ expr id id-alts ...)
(let ([expr (syntax->datum #'expr)]
[id (syntax->datum #'id)])
(datum->syntax stx `(values ,expr ,@(map (λ(id-alt) `(let ([,id ,id-alt]) ,expr)) (syntax->datum #'(id-alts ...))))))]))