"

 COPYRIGHT (c) 1995 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.

"

Object subclass:#ClassOrganizer

	instanceVariableNames:'globalComment categoryArray categoryStops elementArray class

		categories'

	classVariableNames:''

	poolDictionaries:''

	category:'Kernel-Support'

!

!ClassOrganizer class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1995 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

"

    in contrast to other smalltalks, ST/X does not keep the

    method <-> category associations in the class (as organization),

    but instead keeps the category as an instance variable of methods.

    For compatibility with (fileOut-) files which include a class organization

    message, 'aClass organization' returns an instance of this class, which

    implements the category change functionality.

    Also, some PD code seems to use & define methods for ClassOrganizers 

    - having this (somewhat dummy) class around helps to fileIn that code.

    Notice, that instances of ClassOrganizer are NOT used in the current ST/X

    system; all of this is pure compatibility mimicri.

    This is an additional goody class; therefore:

    THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTOR ``AS IS'' AND

    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    ARE DISCLAIMED.  IN NO EVENT SHALL THE CONTRIBUTOR BE LIABLE

    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

    SUCH DAMAGE.

    [author:]

        Claus Gittinger

"

! !

!ClassOrganizer class methodsFor:'instance creation'!

for:aClass

    "create & return a new instance of myself, to organize aClass"

    ^ self new class:aClass

! !

!ClassOrganizer methodsFor:'accessing'!

addCategory:aCategory

    "ignored."

    "

     Number organization addCategory:'foo'. 

    "

    "Created: / 17.4.1998 / 14:42:16 / cg"

!

categories

    "return a collection of my classes method-categorySymbols"

    |set|

    ].

    "

     SmallInteger organization categories 

    "

!

categoryOfElement:aSelectorSymbol

    "return the category for the method specified by aSelectorSymbol.

     Return nil, if there is no such method."

    |m|

    m := class compiledMethodAt:aSelectorSymbol.

    m isNil ifTrue:[^ nil].

    ^ m category

    "

     Number organization categoryOfElement:#foo. 

     Object organization categoryOfElement:#==   

    "

!

classComment

    "return the classes comment"

    ^ class comment

    "

     Number organization classComment  

    "

!

elements

    "return a collection of my classes selectors"

    |set|

    ].

    "

     SmallInteger organization elements 

    "

!

listAtCategoryNamed:aCategorySymbol

    "return a collection of selectors whose methods are categorized

     as aCategorySymbol"

    |list|

    list := OrderedCollection new.

    class methodDictionary keysAndValuesDo:[:sel :mthd |

        mthd category == aCategorySymbol ifTrue:[list add:sel]

    ].

    ^ list asArray

    "

     SmallInteger organization listAtCategoryNamed:#arithmetic 

    "

! !

!ClassOrganizer methodsFor:'changing'!

changeFromString:organizationString

    "take category<->selector associations from aString, and change

     the categories of those methods. 

     Only required when filing in ST-80 code, which changes the categorization

     this way."

    |a category m|

    "

     (mis(use) parser for the scanning

    "

    a := Compiler evaluate:'#(' , organizationString , ')'.

    (a isMemberOf:Array) ifFalse:[^ self error:'malformed argument'].

    a do:[:row |

        category := row at:1.

        2 to:row size do:[:idx |

            |selector|

            selector := row at:idx.

            m := class compiledMethodAt:selector.

            m isNil ifTrue:[

                Transcript showCR:'no method for ' , selector , ' in ', class name

            ] ifFalse:[

                m category:category.

            ]

        ]

    ].

    class changed:#organization

    "

     TestClass 

        organization

            changeFromString:'( ''category1'' #foo1 #foo2 foo3)

                              ( ''category2'' #bar1 #bar2)'

    "

!

classify:aSelector under:aCategory

    "change the category of the method stored under aSelector

     to aCategory."

    |m list|

    class isNil ifTrue:[

        "/ sigh used without a class ...

        categories isNil ifTrue:[

            categories := Dictionary new.

        ].

        list := categories at:aCategory ifAbsent:nil.

        list isNil ifTrue:[

            list := OrderedCollection new.

            categories at:aCategory put:list.

        ].

        list add:aSelector.

        ^ self.

    ].

    m := class compiledMethodAt:aSelector.

    m notNil ifTrue:[

        m category:aCategory

    ].

    class changed:#organization

    "Created: 20.6.1997 / 18:01:18 / cg"

    "Modified: 20.6.1997 / 18:09:37 / cg"

! !

!ClassOrganizer methodsFor:'printing & storing'!

printOn:aStream

    |coll|

    class notNil ifTrue:[

        coll := IdentityDictionary new.

        class methodDictionary keysAndValuesDo:[:sel :mthd |

            |cat list|

            cat := mthd category.

            list := coll at:cat ifAbsent:[].

            list isNil ifTrue:[

                coll at:cat put:(list := OrderedCollection new).

            ].

            list add:sel

        ].

    ] ifFalse:[

        coll := categories

    ].

    coll keysAndValuesDo:[:category :list |

        aStream nextPut:$(.

        aStream nextPutAll:category asString storeString.

        list do:[:selector |

            aStream space.

            selector storeOn:aStream

        ].

        aStream nextPut:$).

        aStream cr

    ]

    "

     Number organization printString

    "

    "Modified: 20.6.1997 / 18:08:15 / cg"

! !

!ClassOrganizer methodsFor:'private access'!

class:aClass

    "set the class"

! !

!ClassOrganizer class methodsFor:'documentation'!

version

! !