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"
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COPYRIGHT (c) 1988 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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Object subclass:#Message
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instanceVariableNames:'selector args'
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classVariableNames:''
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poolDictionaries:''
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category:'Kernel-Methods'
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!
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Message comment:'
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COPYRIGHT (c) 1988 by Claus Gittinger
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All Rights Reserved
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these are only created, when a message fails (i.e. is not understood) -
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the selector and arguments are put into an instance of Message, which is then
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passed to doesNotUnderstand:aMessage as argument.
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This allows for re-evaluation of the failed send (after some cleanup).
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As an example of its use, see the implementation of the Autoload-class.
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$Header: /cvs/stx/stx/libbasic/Message.st,v 1.6 1994-02-25 13:00:38 claus Exp $
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'!
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!Message class methodsFor:'instance creation'!
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selector:aSymbol
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"return a new message object for a send without arguments"
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^ self basicNew selector:aSymbol
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arguments:nil
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!
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selector:aSymbol with:anArg
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"return a new message object for a send with one argument"
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^ self basicNew selector:aSymbol
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arguments:(Array with:anArg)
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!
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selector:aSymbol with:arg1 with:arg2
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"return a new message object for a send with two arguments"
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^ self basicNew selector:aSymbol
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arguments:(Array with:arg1 with:arg2)
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!
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selector:aSymbol withAll:argArray
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"return a new message object for a send with many arguments"
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^ self basicNew selector:aSymbol
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arguments:argArray
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! !
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!Message methodsFor:'private accessing'!
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selector:aSymbol arguments:argArray
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"set selector and arguments of the receiver"
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selector := aSymbol.
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args := argArray
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! !
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!Message methodsFor:'sending'!
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sendTo:aReceiver
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"send the selector with argument to a receiver"
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aReceiver perform:selector withArguments:args
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! !
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!Message methodsFor:'accessing'!
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selector
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"return the selector of the message"
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^ selector
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!
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arguments
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"return the arguments of the message"
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^ args
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! !
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!Message methodsFor:'printing'!
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displayString
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"return a string for display in inspectors etc."
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^ 'Message(' , selector , ')'
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!
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printOn:aStream
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"return a string for printing the receiver"
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selector printOn:aStream
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! !
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