"

 Copyright (c) 2007-2010 Jan Vrany, SWING Research Group,

                           Czech Technical University in Prague

 Copyright (c) 2009-2010 eXept Software AG

 Permission is hereby granted, free of charge, to any person

 obtaining a copy of this software and associated documentation

 files (the 'Software'), to deal in the Software without

 restriction, including without limitation the rights to use,

 copy, modify, merge, publish, distribute, sublicense, and/or sell

 copies of the Software, and to permit persons to whom the

 Software is furnished to do so, subject to the following

 conditions:

 The above copyright notice and this permission notice shall be

 included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 OTHER DEALINGS IN THE SOFTWARE.

"

"{ Package: 'stx:libbasic3' }"

Object subclass:#ChangeSetDiff

	instanceVariableNames:'diffset'

	classVariableNames:''

	poolDictionaries:''

	category:'System-Changes-Diff'

!

!ChangeSetDiff class methodsFor:'documentation'!

copyright

"

 Copyright (c) 2007-2010 Jan Vrany, SWING Research Group,

                           Czech Technical University in Prague

 Copyright (c) 2009-2010 eXept Software AG

 Permission is hereby granted, free of charge, to any person

 obtaining a copy of this software and associated documentation

 files (the 'Software'), to deal in the Software without

 restriction, including without limitation the rights to use,

 copy, modify, merge, publish, distribute, sublicense, and/or sell

 copies of the Software, and to permit persons to whom the

 Software is furnished to do so, subject to the following

 conditions:

 The above copyright notice and this permission notice shall be

 included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 OTHER DEALINGS IN THE SOFTWARE.

"

! !

!ChangeSetDiff class methodsFor:'instance creation'!

new

    ^ self basicNew initialize.

! !

!ChangeSetDiff class methodsFor:'utilities'!

versionA:changesetA versionB:changesetB 

    ^ (self new)

        versionA:changesetA versionB:changesetB;

        diffset

    "Created: / 02-11-2009 / 16:12:31 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

versionA:changesetA versionB:changesetB versionBase: versionBase 

    ^ (self new)

        versionA:changesetA versionB:changesetB versionBase: versionBase;

        diffset

    "Created: / 03-11-2009 / 07:58:12 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!ChangeSetDiff methodsFor:'accessing'!

diffset

    ^ diffset

! !

!ChangeSetDiff methodsFor:'diffing'!

versionA:changesetA versionB:changesetB 

    self versionA:changesetA versionB:changesetB versionBase: nil

    "Created: / 31-10-2009 / 19:12:54 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 02-11-2009 / 18:38:48 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

versionA:a versionB:b versionBase: base

    |ds diffsByClass  |

    "For now, use diff algorithm in ChangeSet>>difSetsAgainst:

     it looks very optimized"

    diffsByClass := Dictionary new.

    ds := a diffSetsAgainst:b.

        (diffsByClass 

            at: (chg nonMetaClassName ifNil:[chg class name])

            ifAbsentPut:[ChangeSetDiffSet new name: chg nonMetaClassName]) 

        include := chgPair first isMethodChange not

                        or:[(AbstractSourceCodeManager isVersionMethodSelector:

                            chgPair first selector) not].

        include ifTrue:[

        (diffsByClass 

            at: chg nonMetaClassName

            ifAbsentPut:[ChangeSetDiffSet new name: chg nonMetaClassName]) 

        "Try to assign base version to each diff item"

        "Sorry, we are using O^2 algorithm here, I'm too lazy now :-)"

                versionBase := base detect:[:each|each isForSameAs: diff versionA] ifNone:[nil].

                        ifTrue:[versionBase := diff versionA asAntiChange]

                diff versionBase: versionBase.

    diffsByClass size = 1 

        ifTrue:[diffset addAll: diffsByClass anyOne diffs]

        ifFalse:[diffset addAll: diffsByClass values].

    diffset versionALabel: a name.

    diffset versionBLabel: b name.

        diffset versionBaseLabel: base name.        

    ].

    "Created: / 02-11-2009 / 16:17:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 29-06-2011 / 08:22:49 / Jan Vrany <enter your email here>"

    "Modified: / 06-07-2011 / 13:00:27 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!ChangeSetDiff methodsFor:'initialization'!

initialize

    "Invoked when a new instance is created."

    "/ please change as required (and remove this comment)

    diffset := ChangeSetDiffSet new.

    "/ super initialize.   -- commented since inherited method does nothing

    "Modified: / 06-07-2011 / 13:00:16 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!ChangeSetDiff class methodsFor:'documentation'!

version_CVS

! !