You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
26 lines
789 B
Racket
26 lines
789 B
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)
|
|
#'(let ([expr-result expr])
|
|
(eprintf "~a = ~v\n" 'name expr-result)
|
|
expr-result)]))
|
|
|
|
(define-syntax (report-datum stx)
|
|
(syntax-case stx ()
|
|
[(_ stx-expr) (with-syntax ([datum (syntax->datum #'stx-expr)])
|
|
#'(report-datum stx-expr datum))]
|
|
[(_ stx-expr name)
|
|
#'(let ()
|
|
(eprintf "~a = ~v\n" 'name (syntax->datum stx-expr))
|
|
stx-expr)]))
|
|
|
|
(define-syntax-rule (define-multi-version multi-name name)
|
|
(define-syntax-rule (multi-name x (... ...))
|
|
(begin (name x) (... ...))))
|
|
|
|
(define-multi-version report* report) |