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17 lines
487 B
Racket
17 lines
487 B
Racket
9 years ago
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#lang racket/base
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(require (for-syntax racket/base racket/syntax))
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(provide (all-defined-out))
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(define-syntax (report stx)
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(syntax-case stx ()
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[(_ expr) #'(report expr expr)]
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[(_ expr name)
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#'(let ([expr-result expr])
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(eprintf "~a = ~v\n" 'name expr-result)
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expr-result)]))
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(define-syntax-rule (define-multi-version multi-name name)
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(define-syntax-rule (multi-name x (... ...))
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(begin (name x) (... ...))))
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(define-multi-version report* report)
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