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symbol.st
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1992-02-15
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2KB
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101 lines
"======================================================================
|
| Symbol Method Definitions
|
======================================================================"
"======================================================================
|
| Copyright (C) 1990, 1991, 1992 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
| sbb 16 Mar 91 Class creation now separate statement.
|
| sbb 21 Sep 90 Added printOn: to print the un-sharped version of the
| symbol, since string printOn: changed.
|
| sbyrne 19 Sep 89 Changed to use real method categories.
|
| sbyrne 25 Apr 89 created.
|
"
String variableByteSubclass: #Symbol
instanceVariableNames: ''
classVariableNames: ''
poolDictionaries: ''
category: nil
!
Symbol comment:
'My instances are unique throughout the Smalltalk system. My instances
behave for the most part like strings, except that they print differently,
and I guarantee that any two instances that have the same printed
representation are in fact the same instance.' !
!Symbol class methodsFor: 'instance creation'!
internCharacter: aCharacter
| s |
s _ String new: 1.
s at: 1 put: aCharacter.
^self intern: s
!!
!Symbol methodsFor: 'converting'!
asSymbol
^self
!!
!Symbol methodsFor: 'misc'!
species
^String
!!
!Symbol methodsFor: 'printing'!
printOn: aStream
aStream nextPutAll: self
!!
!Symbol methodsFor: 'storing'!
storeOn: aStream
aStream nextPut: $#;
nextPutAll: self
!!