h_map.sa


Generated by gen_html_sa_files from ICSI. Contact gomes@icsi.berkeley.edu for details
 
------------------------->  GNU Sather - sourcefile  <-------------------------
-- Copyright (C) 1995 by International Computer Science Institute            --
-- This file is part of the GNU Sather library. It is free software; you may --
-- redistribute  and/or modify it under the terms of the GNU Library General --
-- Public  License (LGPL)  as published  by the  Free  Software  Foundation; --
-- either version 2 of the license, or (at your option) any later version.   --
-- This  library  is distributed  in the  hope that it will  be  useful, but --
-- WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See Doc/LGPL for more details.       --
-- The license text is also available from:  Free Software Foundation, Inc., --
-- 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA                     --
-------------->  Please email comments to <bug-sather@gnu.org>  <--------------

-- h_map.sa: Hash table based map class
-- Author: Benedict A. Gomes <gomes@samosa.ICSI.Berkeley.EDU>


class MAP{ITP,TTP} < $MAP{ITP,TTP}

class MAP{ITP,TTP} < $MAP{ITP,TTP} is -- Map implementation based on a hash table. -- -- Usage: -- m ::= #MAP{INT,STR}; -- m[3] := "foo"; -- m[4] := "bar"; -- loop #OUT+b.elt!; end; -- include H_MAP_IMPL{ITP,TTP}; include MAP_INCL{ITP,TTP}; end; -- MAP{ITP,TTP}

class VMAP{ITP,TTP} < $VMAP{ITP,TTP}

class VMAP{ITP,TTP} < $VMAP{ITP,TTP} is -- Hash table based on data buckets include H_MAP_IMPL{ITP,TTP} delete->private delete, aset->private aset; include MAP_INCL{ITP,TTP}; is_eq(a:$OB):BOOL is -- Return true if 'self' and 'v' have the same value typecase a when $RO_BAG{TUP{ITP,TTP}} then if size /= a.size then return false; end; loop e:TUP{ITP,TTP} := a.unique!; if count(e)/=a.count(e) then return false; end; end; return true; else return false end; end; hash:INT is res:INT := 0; loop e ::= elt!; res := res.bxor(elt_hash(e)); end; return res; end; end; -- VMAP{ITP,TTP}

class H_MAP_IMPL{ITP,TTP}

class H_MAP_IMPL{ITP,TTP} is -- Hash table based on data buckets private include DYNAMIC_DATABUCKET_TABLE{ITP,TTP} -- Make public create->create, map_has_ind->has_ind, map_copy->copy, map_pair!->elt!, map_key!->ind!, map_delete->map_delete, map_aget->aget, map_aset->aset; insert(e:TUP{ITP,TTP}):SAME is res ::= copy; res.aset(e.t1,e.t2); return res; end; target!:TTP is loop i ::= ind!; yield aget(i); end; end; delete(e:TUP{ITP,TTP}) is delete(e.t1) end; delete(k:ITP) pre ~void(self) is dummy ::= map_delete(k) end; size: INT is return n_inds end; end;