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Turnbull China Bikeride
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Turnbull China Bikeride - Disc 2.iso
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printHier
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1991-09-13
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2KB
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61 lines
"Print out the class inheritance hierarchy."
"======================================================================
|
| 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 LICENSE. If not, write to the Free Software
| Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
======================================================================"
!Behavior methodsFor: 'demo'!
printHierarchy
"I my entire subclassclass hierarchy on the terminal."
self printSubclasses: 0
!!
!Behavior methodsFor: 'private'!
printSubclasses: level
"I print my name, and then all my subclasses, each indented according
to its position in the hierarchy."
| mySubclasses |
self indentToLevel: level.
self name printNl.
mySubclasses _ self subclasses asSortedCollection:
[ :a :b | (a name isNil or: [ b name isNil ])
ifTrue: [ true ]
ifFalse: [ a name <= b name ] ].
mySubclasses do:
[ :subclass | subclass class ~~ Metaclass
ifTrue: [ subclass printSubclasses: level + 1 ] ]
!
indentToLevel: level
level timesRepeat:
[ stdout next: (self hierarchyIndent) put: Character space ]
!
hierarchyIndent
^4
!!
Object printHierarchy!