mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-05-01 10:26:12 +03:00
d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
60 lines
2.6 KiB
Plaintext
60 lines
2.6 KiB
Plaintext
-- Created on: 1993-01-07
|
|
-- Created by: Remi LEQUETTE
|
|
-- Copyright (c) 1993-1999 Matra Datavision
|
|
-- Copyright (c) 1999-2014 OPEN CASCADE SAS
|
|
--
|
|
-- This file is part of Open CASCADE Technology software library.
|
|
--
|
|
-- This library is free software; you can redistribute it and/or modify it under
|
|
-- the terms of the GNU Lesser General Public License version 2.1 as published
|
|
-- by the Free Software Foundation, with special exception defined in the file
|
|
-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
|
|
-- distribution for complete text of the license and disclaimer of any warranty.
|
|
--
|
|
-- Alternatively, this file may be used under the terms of Open CASCADE
|
|
-- commercial license or contractual agreement.
|
|
|
|
generic class MapHasher from TCollection (Key as any)
|
|
|
|
---Purpose: A hasher on the keys of a map instantiated from the
|
|
-- Collections component.
|
|
-- A hasher provides two functions:
|
|
-- - The hashing function (HashCode) transforms a key
|
|
-- into a bucket index in the map. The number of values
|
|
-- that can be computed by the hashing function is equal
|
|
-- to the number of buckets in the map.
|
|
-- - IsEqual is the equality test between two keys.
|
|
-- Hashers are used as parameters in generic maps
|
|
-- provided by the Collections component.
|
|
-- MapHasher is a generic class which depends on the type
|
|
-- of keys, provided that Key is a type from the Standard
|
|
-- package. In such cases MapHasher may be directly
|
|
-- instantiated with Key. Note that the package TColStd
|
|
-- provides some of these instantiations.
|
|
-- But if Key is not a type from the Standard package you
|
|
-- must consider MapHasher as a template and build a class
|
|
-- which includes its functions, in order to use it as a hasher
|
|
-- in a map instantiated from the Collections component.
|
|
-- Note that TCollection_AsciiString and
|
|
-- TCollection_ExtendedString classes correspond to
|
|
-- these specifications, in consequence they may be used as
|
|
-- hashers: when Key is one of these two types you may just
|
|
-- define the hasher as the same type at the time of
|
|
-- instantiation of your map.
|
|
|
|
is
|
|
HashCode(myclass; K : Key; Upper : Integer) returns Integer;
|
|
---Level: Public
|
|
---Purpose: Returns a HasCode value for the Key <K> in the
|
|
-- range 0..Upper.
|
|
-- Default ::HashCode(K,Upper)
|
|
|
|
IsEqual(myclass; K1, K2 : Key) returns Boolean;
|
|
---Level: Public
|
|
---Purpose: Returns True when the two keys are the same. Two
|
|
-- same keys must have the same hashcode, the
|
|
-- contrary is not necessary.
|
|
-- Default K1 == K2
|
|
|
|
end MapHasher;
|