26 lines
672 B
Scheme
26 lines
672 B
Scheme
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; Copyright (c) 1993, 1994 Richard Kelsey and Jonathan Rees. See file COPYING.
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; Portable versions of low-level things that would really like to rely
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; on the Scheme 48 VM or on special features provided by the byte code
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; compiler.
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(define (vector-unassigned? v i) #f)
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(define (flush-the-symbol-table!) #f)
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(define maybe-open-input-file open-input-file)
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(define maybe-open-output-file open-output-file)
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; Suppress undefined export warnings.
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(define-syntax %file-name%
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(syntax-rules ()
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((%file-name%) "")))
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(define-syntax structure-ref
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(syntax-rules ()
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((structure-ref ?struct ?name)
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(error "structure-ref isn't implemented" '?struct '?name))))
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