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26 lines
779 B
Racket
26 lines
779 B
Racket
#lang racket/base
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(require (for-syntax racket/base br/syntax) br/define)
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(provide (all-defined-out))
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(define-macro-cases report
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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-macro-cases report-datum
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[(_ STX-EXPR) #`(report-datum STX-EXPR #,(syntax->datum #'STX-EXPR))]
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[(_ STX-EXPR NAME)
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#'(let ([stx STX-EXPR])
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(eprintf "~a = ~v\n" 'NAME (if (eof-object? stx)
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stx
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(syntax->datum stx)))
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stx)])
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(define-macro (define-multi-version MULTI-NAME NAME)
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#'(define-macro (MULTI-NAME X (... ...))
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#'(begin (NAME X) (... ...))))
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(define-multi-version report* report)
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