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- "======================================================================
- |
- | ArrayedCollection Method Definitions
- |
- ======================================================================"
-
-
- "======================================================================
- |
- | Copyright (C) 1990, 1991 Free Software Foundation, Inc.
- | Written by Steve Byrne.
- |
- | This file is part of GNU Smalltalk.
- |
- | GNU Smalltalk is free software; you can redistribute it and/or modify it
- | under the terms of the GNU General Public License as published by the Free
- | Software Foundation; either version 1, or (at your option) any later version.
- |
- | GNU Smalltalk 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 the GNU General Public License for more
- | details.
- |
- | You should have received a copy of the GNU General Public License along with
- | GNU Smalltalk; see the file COPYING. If not, write to the Free Software
- | Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- |
- ======================================================================"
-
-
- "
- | Change Log
- | ============================================================================
- | Author Date Change
- | sbyrne 25 Apr 89 created.
- |
- "
-
- SequenceableCollection variableSubclass: #ArrayedCollection
- instanceVariableNames: ''
- classVariableNames: ''
- poolDictionaries: ''
- category: nil.
-
- ArrayedCollection comment:
- 'My instances are objects that are generally fixed size, and are accessed
- by an integer index. The ordering of my instance''s elements is determined
- externally; I will not rearrange the order of the elements.' !
-
- !ArrayedCollection class methodsFor: 'instance creation'!
-
- with: element1
- | anArrayedCollection |
- anArrayedCollection _ self new: 1.
- anArrayedCollection at: 1 put: element1.
- ^anArrayedCollection
- !
-
- with: element1 with: element2
- | anArrayedCollection |
- anArrayedCollection _ self new: 2.
- anArrayedCollection at: 1 put: element1.
- anArrayedCollection at: 2 put: element2.
- ^anArrayedCollection
- !
-
- with: element1 with: element2 with: element3
- | anArrayedCollection |
- anArrayedCollection _ self new: 3.
- anArrayedCollection at: 1 put: element1.
- anArrayedCollection at: 2 put: element2.
- anArrayedCollection at: 3 put: element3.
- ^anArrayedCollection
- !
-
- with: element1 with: element2 with: element3 with: element4
- | anArrayedCollection |
- anArrayedCollection _ self new: 4.
- anArrayedCollection at: 1 put: element1.
- anArrayedCollection at: 2 put: element2.
- anArrayedCollection at: 3 put: element3.
- anArrayedCollection at: 4 put: element4.
- ^anArrayedCollection
- !!
-
-
-
- !ArrayedCollection methodsFor: 'basic'!
-
- add: value
- self shouldNotImplement
- !!
-
-
-
- !ArrayedCollection methodsFor: 'comparing'!
-
- = anArrayedCollection
- "Return true if the receiver and anArrayedCollection represent arrays
- with equal contents."
- self size = anArrayedCollection size ifFalse: [ ^false ].
- 1 to: self size do:
- [ :i | (self at: i) = (anArrayedCollection at: i)
- ifFalse: [ ^false ] ].
- ^true
- !
-
- hash
- "Return the hash value of the array"
- "### I don't like this hashing algorithm"
- | hashValue |
- hashValue _ 0.
- self do: [ :element | hashValue _ ((hashValue bitShift: 1)
- bitXor: element hash)
- bitAnd: 16r1FFFFFFF ].
- ^hashValue
- !!
-
-
- !ArrayedCollection methodsFor: 'printing'!
-
- printOn: aStream
- | firstTime |
- aStream nextPutAll: self classNameString.
- aStream nextPutAll: ' ('.
- firstTime _ true.
- self do:
- [ :element | firstTime ifTrue: [ firstTime _ false ]
- ifFalse: [ aStream nextPut: Character space ].
- element storeOn: aStream ].
- aStream nextPut: $)
- !!
-
-
-
- !ArrayedCollection methodsFor: 'storing'!
-
- storeOn: aStream
- | index |
- aStream nextPutAll: '(('; nextPutAll: self classNameString;
- nextPutAll: ' basicNew: '.
- self basicSize printOn: aStream.
- aStream nextPut: $).
- index _ 1.
- self do:
- [ :element | aStream nextPutAll: ' at: '.
- index printOn: aStream.
- aStream nextPutAll: ' put: '.
- element storeOn: aStream.
- aStream nextPut: $;.
- index _ index + 1 ].
- index > 1 ifTrue: [ aStream nextPutAll: ' yourself' ].
- aStream nextPut: $)
- !!
-
-