basis/hash-sets/sequences/sequences.factor

   1 ! Copyright (C) 2013 John Benediktsson
   2 ! See http://factorcode.org/license.txt for BSD license
   3
   4 USING: accessors combinators hash-sets hash-sets.wrapped kernel
   5 parser sequences sets vocabs.loader ;
   6
   7 IN: hash-sets.sequences
   8
   9 ERROR: not-a-sequence object ;
  10
  11 TUPLE: sequence-wrapper < wrapped-key ;
  12
  13 C: <sequence-wrapper> sequence-wrapper
  14
  15 M: sequence-wrapper equal?
  16     over sequence-wrapper?
  17     [ [ underlying>> ] bi@ sequence= ]
  18     [ 2drop f ] if ; inline
  19
  20 M: sequence-wrapper hashcode*
  21     underlying>> [ sequence-hashcode ] recursive-hashcode ; inline
  22
  23 TUPLE: sequence-hash-set < wrapped-hash-set ;
  24
  25 : <sequence-hash-set> ( n -- shash-set )
  26     <hash-set> sequence-hash-set boa ; inline
  27
  28 M: sequence-hash-set wrap-key
  29     drop dup sequence? [ <sequence-wrapper> ] [ not-a-sequence ] if ;
  30
  31 M: sequence-hash-set clone
  32     underlying>> clone sequence-hash-set boa ; inline
  33
  34 : >sequence-hash-set ( members -- shash-set )
  35     [ <sequence-wrapper> ] map >hash-set sequence-hash-set boa ;
  36
  37 SYNTAX: SHS{ \ } [ >sequence-hash-set ] parse-literal ;
  38
  39 { "hash-sets.sequences" "prettyprint" } "hash-sets.sequences.prettyprint" require-when