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linked-assocs: give linked-hash "LH{ }" literal pprint.

db4
John Benediktsson 2015-11-04 08:36:24 -08:00
parent 4ce72ddbfb
commit 40d454758e
1 changed files with 16 additions and 2 deletions
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18
basis/linked-assocs/linked-assocs.factor
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@ -1,7 +1,8 @@
! Copyright (C) 2008 Slava Pestov, James Cash.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors arrays assocs classes deques dlists fry kernel
sequences sequences.private ;
USING: accessors arrays assocs classes deques dlists fry
hashtables kernel parser prettyprint.backend prettyprint.custom
sequences.private ;
IN: linked-assocs
TUPLE: linked-assoc { assoc read-only } { dlist dlist read-only } ;
@ -60,3 +61,16 @@ M: linked-assoc assoc-like
M: linked-assoc equal?
over linked-assoc? [ [ dlist>> ] bi@ = ] [ 2drop f ] if ;
SYNTAX: LH{ \ } [ check-hashtable >linked-hash ] parse-literal ;
PREDICATE: linked-hash < linked-assoc assoc>> hashtable? ;
M: linked-hash pprint-delims drop \ LH{ \ } ;
M: linked-hash >pprint-sequence >alist ;
M: linked-hash pprint-narrow? drop t ;
M: linked-hash pprint*
[ pprint-object ] with-extra-nesting-level ;