"
 COPYRIGHT (c) 2006 by eXept Software AG
              All Rights Reserved

 This software is furnished under a license and may be used
 only in accordance with the terms of that license and with the
 inclusion of the above copyright notice.   This software may not
 be provided or otherwise made available to, or used by, any
 other person.  No title to or ownership of the software is
 hereby transferred.
"
"{ Package: 'stx:libbasic' }"

Object subclass:#Lookup
	instanceVariableNames:''
	classVariableNames:''
	poolDictionaries:''
	category:'Kernel-Classes'
!

!Lookup class methodsFor:'documentation'!

copyright
"
 COPYRIGHT (c) 2006 by eXept Software AG
              All Rights Reserved

 This software is furnished under a license and may be used
 only in accordance with the terms of that license and with the
 inclusion of the above copyright notice.   This software may not
 be provided or otherwise made available to, or used by, any
 other person.  No title to or ownership of the software is
 hereby transferred.
"
! !

!Lookup class methodsFor:'accessing'!

builtin

    ^BuiltinLookup instance

    "Created: / 26-04-2010 / 19:26:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!Lookup methodsFor:'lookup'!

lookupMethodForSelector:aSelector directedTo:searchClass for:aReceiver withArguments:argArrayOrNil from:sendingContext
    "invoked by the VM to ask me for a method to call.
     The arguments are: the selector, receiver and arguments,
     the class to start the search in (for here-, super and directed sends)
     the sending context.

     The returned method object will be put into the inline- and polyCache
     at the call site; it might therefore be called more than once for the
     same receiver-class/selector combination (once for each call site).
     If I return nil, a doesNotUnderstand will be invoked."

     |cls md method|

     cls := searchClass.
     cls isNil ifTrue:[ cls := aReceiver class ].
     [ cls notNil ] whileTrue:[
        md := cls methodDictionary.
        method := md at:aSelector ifAbsent:nil.
        method notNil ifTrue:[^ method ].
        cls := cls superclass.
     ].
     ^ nil
! !

!Lookup class methodsFor:'documentation'!

version_SVN
    ^ '$Id: Lookup.st 10517 2010-04-26 18:26:38Z vranyj1 $'
! !