"

 COPYRIGHT (c) 1993 by Claus Gittinger

	       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:libbasic3' }"

ClassChange subclass:#MethodChange

	instanceVariableNames:'selector methodCategory privacy previousVersion'

	classVariableNames:''

	poolDictionaries:''

	category:'System-Changes'

!

!MethodChange class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1993 by Claus Gittinger

	       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.

"

!

documentation

"

    instances represent method-changes (as done in the browser). 

    They are typically held in a ChangeSet.

    [author:]

        Claus Gittinger

"

! !

!MethodChange class methodsFor:'instance creation'!

class:cls selector:sel source:src category:cat

    ^ self basicNew class:cls selector:sel source:src category:cat

!

className:clsName selector:sel source:src category:cat

    ^ self basicNew className:clsName selector:sel source:src category:cat

! !

!MethodChange methodsFor:'accessing'!

category

    ^ methodCategory 

!

category: aCategory

    methodCategory := aCategory

    "Created: / 7.2.1998 / 19:47:53 / cg"

!

changeMethod

    |cls|

    cls := self changeClass.

    cls isNil ifTrue:[^ nil].

    ^ cls compiledMethodAt:selector 

    "Created: / 7.2.1998 / 19:47:53 / cg"

!

changeSelector

    ^ selector

    "Created: / 6.2.1998 / 13:29:25 / cg"

!

class:cls selector:sel source:src category:cat

    self className:(cls name) selector:sel source:src category:cat

!

className:clsName selector:sel source:src category:cat

    self className:clsName selector:sel source:src category:cat privacy:nil

!

className:clsName selector:sel source:src category:cat privacy:priv

    src isString ifFalse:[self halt].

    className := clsName.

    selector := sel.

    source := src.

    methodCategory := cat.

    privacy := priv.

    "Created: / 16.2.1998 / 12:29:49 / cg"

    "Modified: / 16.2.1998 / 14:28:12 / cg"

!

methodCategory

    ^ methodCategory

    "Created: / 7.2.1998 / 19:47:53 / cg"

!

previousPackage

    | isNewMethod |

    isNewMethod := self previousVersion isNil.

    isNewMethod ifFalse:[

        ^ self previousVersion package.

    ].

    ^ nil

!

previousVersion

    "return the value of the instance variable 'previousVersion' (automatically generated)"

    ^ previousVersion

!

previousVersion:something

    "set the value of the instance variable 'previousVersion' (automatically generated)"

    previousVersion := something.

!

previousVersionSource

    "return the value of the instance variable 'previousVersion' (automatically generated)"

    previousVersion isNil ifTrue:[^ nil].

    ^ previousVersion source

!

selector

    ^ selector

    "Created: / 6.2.1998 / 13:29:25 / cg"

!

selector:aSymbol

    selector := aSymbol

    "Created: / 6.2.1998 / 13:29:25 / cg"

! !

!MethodChange methodsFor:'applying'!

apply

    "apply the change"

    |className class|

    className := self className.

    class := Smalltalk classNamed:className.

    class isNil ifTrue:[

        class := Parser evaluate:className

    ].

    class isNil ifTrue:[

        self error:('Cannot apply change for missing class: ' , className).

    ].

    class compile:source classified:methodCategory logged:true.

! !

!MethodChange methodsFor:'comparing'!

isForSameAs:changeB

    "return true, if the given change represents a change for the same

     thingy as the receiver (i.e. same method, same definition etc.)."

    "/ I am a methodChange - B must be as well.

    changeB isMethodChange ifFalse:[^ false].   

    selector ~= changeB selector ifTrue:[^ false].

    className ~= changeB className ifTrue:[^ false].

    ^ true

!

sameAs:changeB

    "return true, if the given change represents the same change as the receiver."

    (self isForSameAs:changeB) ifFalse:[^ false].   

    ^ self sameSourceAs:changeB

! !

!MethodChange methodsFor:'printing & storing'!

printOn:aStream

    "append a user printed representation of the receiver to aStream.

     The format is suitable for a human - not meant to be read back."

!

printWithoutClassNameOn:aStream

    (className endsWith:' class') ifTrue:[

        aStream nextPutAll:'class '

    ].

    aStream nextPutAll:selector 

!

printWithoutOwningClassOn:aStream

    self halt.

    (className endsWith:' class') ifTrue:[

        aStream nextPutAll:'class '

    ].

    aStream nextPutAll:selector 

! !

!MethodChange methodsFor:'queries'!

isMethodChange

    ^ true

    "Created: / 7.2.1998 / 19:26:59 / cg"

! !

!MethodChange class methodsFor:'documentation'!

version

! !