/usr/share/rep/0.90.2/lisp/rep/data/symbol-table.jl is in librep-dev 0.90.2-1.3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | #| symbol-table.jl -- use modules to provide efficient symbol tables
$Id$
Copyright (C) 2000 John Harper <john@dcs.warwick.ac.uk>
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|#
;; Commentary:
;; Structures provide the most efficient means of maintaining mappings
;; from symbols to values (tables using eq hashing would be comparable,
;; but less efficient since they're more general).
;; However, I don't want to expose the first-class structure interface
;; to general code, hence these wrappers for making anonymous
;; structures
(define-structure rep.data.symbol-table
(export make-symbol-table
symbol-table-ref
symbol-table-set
symbol-table-boundp
symbol-table-walk)
(open rep
rep.structures)
(define-structure-alias symbol-table rep.data.symbol-table)
(define (make-symbol-table)
(make-structure))
(define (symbol-table-ref table var)
(and (structure-bound-p table var)
(%structure-ref table var)))
(define (symbol-table-set table var value)
(structure-define table var value))
(define (symbol-table-boundp table var)
(structure-bound-p table var))
(define (symbol-table-walk fun table)
(structure-walk fun table)))
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