MiniInspector.st
author Stefan Vogel <sv@exept.de>
Thu, 14 Dec 1995 23:42:02 +0100
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parent 720 f31e0e5ab6e0
child 903 234a9d6e4492
permissions -rw-r--r--
Add SemaphoreSet.
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 COPYRIGHT (c) 1989 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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Object subclass:#MiniInspector
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	 instanceVariableNames:'inspectedObject'
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	 classVariableNames:''
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	 poolDictionaries:''
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	 category:'System-Debugging-Support'
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!
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!MiniInspector class methodsFor:'documentation'!
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copyright
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 COPYRIGHT (c) 1989 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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documentation
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    a primitive (non graphical) inspector for use on systems without
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    graphics or when the real inspector dies.
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! !
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!MiniInspector class methodsFor:'instance creation'!
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openOn:anObject
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    |anInspector|
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    anInspector := (self new) initializeFor:anObject.
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    anInspector enter
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! !
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!MiniInspector methodsFor:'private'!
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commandLoop
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    |cmd done valid|
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    'Inspector:' printNewline.
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    ' ' printNewline.
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    done := false.
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    [done] whileFalse:[
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	valid := false.
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	cmd := self getCommand.
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	(cmd == $0) ifTrue:[
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	    valid := true.
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	    self inspectInstvar:0 of:inspectedObject
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	].
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	(cmd == $1) ifTrue:[
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	    valid := true.
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	    self inspectInstvar:1 of:inspectedObject
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	].
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	(cmd == $2) ifTrue:[
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	    valid := true.
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	    self inspectInstvar:2 of:inspectedObject
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	].
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	(cmd == $3) ifTrue:[
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	    valid := true.
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	    self inspectInstvar:3 of:inspectedObject
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	].
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	(cmd == $i) ifTrue:[
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	    valid := true.
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	    self printInstVarsOf:inspectedObject
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	].
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	(cmd == $p) ifTrue:[
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	    valid := true.
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	    inspectedObject printNewline
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	].
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	(cmd == $q) ifTrue:[valid := true. done := true ].
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	valid ifFalse: [
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	    'valid commands:
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   (i)nstvars
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   (p)rint
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   (1-9) inspect instvar
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   (q)uit'       errorPrintNewline
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	]
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    ].
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    ^ cmd
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!
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enter
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    self commandLoop.
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    ^ nil
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!
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getCommand
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    |cmd c|
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    'inspector> ' print.
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    cmd := Character fromUser.
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    c := cmd.
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    [ c isEndOfLineCharacter ] whileFalse: [
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	c := Character fromUser
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    ].
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    ^ cmd
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!
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initializeFor:anObject
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    inspectedObject := anObject.
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    ^self
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!
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inspectInstvar:which of:anObject
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    which > (anObject class instSize) ifTrue:[
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	'invalid instvar' printNewline
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    ] ifFalse: [
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	(anObject instVarAt:which) inspect
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    ]
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!
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printInstVarsOf:anObject
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    |n|
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    n := anObject class instSize.
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    'number of instvars: ' print. n printNewline.
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    1 to:n do:[:i |
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	'  ' print. i print. ': ' print.
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	(anObject instVarAt:i) printNewline
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    ]
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! !
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!MiniInspector class methodsFor:'documentation'!
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version
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    ^ '$Header: /cvs/stx/stx/libbasic/MiniInspector.st,v 1.15 1995-12-09 15:04:49 cg Exp $'
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! !