"

 COPYRIGHT (c) 1989-92 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.

"

SequenceableCollection subclass:#ArrayedCollection

       instanceVariableNames:''

       classVariableNames:''

       poolDictionaries:''

       category:'Collections-Abstract'

!

ArrayedCollection comment:'

COPYRIGHT (c) 1989-92 by Claus Gittinger

             All Rights Reserved

ArrayedCollections are collections where the elements can be accessed via an integer index.

%W% %E%

written spring 89 by claus

'!

!ArrayedCollection class methodsFor:'instance creation'!

with:element

    "return a new SequenceableCollection with one element:anObject"

    |newCollection|

    newCollection := self new:1.

    newCollection at:1 put:element.

    ^newCollection

!

with:first with:second

    "return a new SequenceableCollection with two elements"

    |newCollection|

    newCollection := self new:2.

    newCollection at:1 put:first.

    newCollection at:2 put:second.

    ^newCollection

!

with:first with:second with:third

    "return a new SequenceableCollection with three elements"

    |newCollection|

    newCollection := self new:3.

    newCollection at:1 put:first.

    newCollection at:2 put:second.

    newCollection at:3 put:third.

    ^newCollection

!

with:first with:second with:third with:forth

    "return a new SequenceableCollection with four elements"

    |newCollection|

    newCollection := self new:4.

    newCollection at:1 put:first.

    newCollection at:2 put:second.

    newCollection at:3 put:third.

    newCollection at:4 put:forth.

    ^newCollection

!

with:one with:two with:three with:four with:five

    "return a new SequenceableCollection with five elements"

    |newCollection|

    newCollection := self new:5.

    newCollection at:1 put:one.

    newCollection at:2 put:two.

    newCollection at:3 put:three.

    newCollection at:4 put:four.

    newCollection at:5 put:five.

    ^newCollection

!

withAll:aCollection

    "return a new Collection with all elements taken from the argument,

     aCollection"

    |newCollection newSize

     index "{ Class: SmallInteger }" |

    newSize := aCollection size.

    newCollection := self new:newSize.

    (aCollection isKindOf:SequenceableCollection) ifTrue:[

        "aCollection has indexed elements"

        newCollection replaceFrom:1 to:newSize with:aCollection startingAt:1

    ] ifFalse:[

        "must enumerate the elements"

        index := 1.

        aCollection do:[:element |

            newCollection at:index put:element.

            index := index + 1

        ]

    ].

    ^ newCollection

! !

!ArrayedCollection methodsFor:'error handling'!

indexMustBeInteger

    "report an error that index must be Integer"

    ^ self error:'index must be integer'

!

indexOutOfRange:theIndex

    "report an error that index is out of range"

    ^ self error:'index is out of range'

!

fixedSizeError

    "report an error that size of the collection cannot be changed"

    ^ self error:'cannot change size'

! !

!ArrayedCollection methodsFor:'accessing'!

size

    "return the ArrayedCollections size - redefined since SequenceableCollection

     does it in a slow way"

    ^ self basicSize

!

at:index

    "return the index's element of the collection"

    ^ self basicAt:index

!

at:index put:anObject

    "put the argument as index's element into the collection"

    ^ self basicAt:index put:anObject

! !

!ArrayedCollection methodsFor:'storing'!

storeOn:aStream

    "output a printed representation (which can be re-read)

     onto the argument aStream"

    |index "{ Class: SmallInteger }"|

    aStream nextPutAll:'('.

    aStream nextPutAll:self class name.

    aStream nextPutAll:' new:'.

    self size printOn:aStream.

    aStream nextPutAll:')'.

    index := 1.

    self do:[:element |

        aStream nextPutAll:' at:'.

        index printOn:aStream.

        aStream nextPutAll:' put:'.

        element storeOn:aStream.

        aStream nextPut:$;.

        index := index + 1

    ].

    index > 1 ifTrue:[aStream nextPutAll:' yourself'].

    aStream nextPut:$)

! !