author | Claus Gittinger <cg@exept.de> |
Mon, 25 Sep 2000 16:27:44 +0200 | |
changeset 5626 | 91a2b608702f |
parent 5557 | f5f8d236027c |
child 6548 | e47779f9bbfa |
permissions | -rw-r--r-- |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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"{ Package: 'stx:libbasic' }" |
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SequenceableCollection subclass:#ArrayedCollection |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Collections-Abstract' |
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! |
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!ArrayedCollection class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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All Rights Reserved |
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|
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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! |
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documentation |
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" |
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ArrayedCollection is an abstract superclass for all collections where |
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the elements can be accessed via an integer index, |
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AND the collection is a fixed size collection. |
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Those fixed size collections cannot easily grow, since they store the |
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elements directly within the object and a grow operation can only be done |
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by #becoming another object. |
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(other collections keep a reference to the physical container, which |
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can be easily replaced) |
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[Warning:] |
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currently, ST/X supports growing fix-size collections |
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(such as Arrays, ByteArrays and Strings). However, this |
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is done in a very slow way (using #become). |
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Become is a very slow operation in a direct-pointer smalltalk |
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system. |
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\ |
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Therefore, you SHOULD rewrite any application that does this, |
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to make use of OrderedCollections or any other collection which |
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can grow faster. |
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To remind you of that, a warning message is sent to the |
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standard error whenever such an operation is performed (see #grow). |
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\ |
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Also note, that some other smalltalk systems do NOT allow |
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fix size collection to change their size, and that future |
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ST/X versions may be changed to trigger an error (instead of a |
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warning) in those situations. |
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[author:] |
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Claus Gittinger |
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[see also:] |
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OrderedCollection Array |
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" |
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! ! |
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!ArrayedCollection class methodsFor:'instance creation'! |
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newFrom:aCollection |
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"Return an instance of me containing the same elements as aCollection." |
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|newArray idx sz| |
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sz := aCollection size. |
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newArray := self new:sz. |
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aCollection isSequenceable ifTrue:[ |
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newArray replaceFrom:1 to:sz with:aCollection startingAt:1 |
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] ifFalse:[ |
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idx := 1. |
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aCollection do:[:element | |
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newArray at:idx put:element. |
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idx := idx + 1. |
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]. |
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]. |
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^ newArray |
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Array newFrom: #[1 2 3] |
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#[1 2 3] as: Array |
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#[1 2 3] as: ByteArray |
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#($c $h $r) as: String |
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#($c $h $r) as: Text |
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" |
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! |
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with:element |
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"return a new SequenceableCollection with one element:anObject" |
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|newCollection| |
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newCollection := self new:1. |
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newCollection at:1 put:element. |
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^newCollection |
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" |
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OrderedCollection with:1 |
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SortedCollection with:99 |
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" |
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! |
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with:first with:second |
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"return a new SequenceableCollection with two elements" |
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|newCollection| |
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newCollection := self new:2. |
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newCollection at:1 put:first; at:2 put:second. |
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^newCollection |
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" |
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OrderedCollection with:1 with:2 |
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SortedCollection with:99 with:3 |
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Array with:1 with:2 |
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"Modified: 22.1.1997 / 19:35:43 / cg" |
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! |
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with:a1 with:a2 with:a3 |
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"return a new SequenceableCollection with three elements" |
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|newCollection| |
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newCollection := self new:3. |
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newCollection at:1 put:a1; at:2 put:a2; at:3 put:a3. |
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^ newCollection |
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" |
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OrderedCollection with:1 with:2 with:3 |
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Array with:1 with:2 with:3 |
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" |
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"Modified: 22.1.1997 / 19:35:47 / cg" |
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! |
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with:a1 with:a2 with:a3 with:a4 |
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"return a new SequenceableCollection with four elements" |
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|newCollection| |
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newCollection := self new:4. |
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newCollection at:1 put:a1; at:2 put:a2; at:3 put:a3; at:4 put:a4. |
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^ newCollection |
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" |
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OrderedCollection with:1 with:2 with:3 with:4 |
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Array with:1 with:2 with:3 with:4 |
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" |
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"Modified: 22.1.1997 / 19:35:52 / cg" |
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! |
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with:a1 with:a2 with:a3 with:a4 with:a5 |
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"return a new SequenceableCollection with five elements" |
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|newCollection| |
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newCollection := self new:5. |
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newCollection at:1 put:a1; at:2 put:a2; at:3 put:a3; at:4 put:a4; |
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at:5 put:a5. |
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^ newCollection |
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" |
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OrderedCollection with:1 with:2 with:3 with:4 with:5 |
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Array with:1 with:2 with:3 with:4 with:5 |
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" |
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"Modified: 22.1.1997 / 19:35:57 / cg" |
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! |
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with:a1 with:a2 with:a3 with:a4 with:a5 with:a6 |
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"return a new SequenceableCollection with six elements" |
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|newCollection| |
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newCollection := self new:6. |
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newCollection at:1 put:a1; at:2 put:a2; at:3 put:a3; at:4 put:a4; |
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at:5 put:a5; at:6 put:a6. |
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^ newCollection |
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" |
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OrderedCollection with:1 with:2 with:3 with:4 with:5 with:6 |
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Array with:1 with:2 with:3 with:4 with:5 with:6 |
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" |
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"Modified: 22.1.1997 / 19:36:03 / cg" |
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! |
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with:a1 with:a2 with:a3 with:a4 with:a5 with:a6 with:a7 |
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"return a new SequenceableCollection with seven elements" |
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|newCollection| |
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newCollection := self new:7. |
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newCollection at:1 put:a1; at:2 put:a2; at:3 put:a3; at:4 put:a4; |
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at:5 put:a5; at:6 put:a6; at:7 put:a7. |
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^ newCollection |
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" |
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OrderedCollection with:1 with:2 with:3 with:4 with:5 with:6 with:7 |
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Array with:1 with:2 with:3 with:4 with:5 with:6 with:7 |
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" |
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"Modified: 22.1.1997 / 19:36:20 / cg" |
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! |
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with:a1 with:a2 with:a3 with:a4 with:a5 with:a6 with:a7 with:a8 |
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"return a new SequenceableCollection with eight elements" |
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|newCollection| |
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newCollection := self new:8. |
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newCollection at:1 put:a1; at:2 put:a2; at:3 put:a3; at:4 put:a4; |
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at:5 put:a5; at:6 put:a6; at:7 put:a7; at:8 put:a8. |
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^ newCollection |
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" |
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OrderedCollection with:1 with:2 with:3 with:4 with:5 with:6 with:7 with:8 |
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Array with:1 with:2 with:3 with:4 with:5 with:6 with:7 with:8 |
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238 |
" |
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|
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"Modified: 22.1.1997 / 19:35:21 / cg" |
1 | 241 |
! |
242 |
||
243 |
withAll:aCollection |
|
244 |
"return a new Collection with all elements taken from the argument, |
|
245 |
aCollection" |
|
246 |
||
247 |
|newCollection newSize |
|
248 |
index "{ Class: SmallInteger }" | |
|
249 |
||
250 |
newSize := aCollection size. |
|
251 |
newCollection := self new:newSize. |
|
359 | 252 |
aCollection isSequenceable ifTrue:[ |
1998 | 253 |
"/ |
254 |
"/ aCollection has indexed elements |
|
255 |
"/ a block-replace may be faster |
|
256 |
"/ |
|
257 |
newCollection replaceFrom:1 to:newSize with:aCollection startingAt:1 |
|
1 | 258 |
] ifFalse:[ |
1998 | 259 |
"/ |
260 |
"/ must enumerate the elements individually |
|
261 |
"/ |
|
262 |
index := 1. |
|
263 |
aCollection do:[:element | |
|
264 |
newCollection at:index put:element. |
|
265 |
index := index + 1 |
|
266 |
] |
|
1 | 267 |
]. |
268 |
^ newCollection |
|
125 | 269 |
|
270 |
" |
|
271 |
OrderedCollection withAll:#(1 2 3 4 5) |
|
272 |
SortedCollection withAll:#(99 17 53 1 101) |
|
273 |
" |
|
1171 | 274 |
|
275 |
"Modified: 13.4.1996 / 12:14:38 / cg" |
|
1 | 276 |
! ! |
277 |
||
2125 | 278 |
!ArrayedCollection class methodsFor:'queries'! |
68 | 279 |
|
602 | 280 |
growIsCheap |
281 |
"return true, if this collection can easily grow |
|
282 |
(i.e. without a need for become:). |
|
283 |
Since this is the superclass of all indexed fix-size collections, |
|
284 |
return false here." |
|
68 | 285 |
|
602 | 286 |
^ false |
2 | 287 |
! ! |
288 |
||
249 | 289 |
!ArrayedCollection methodsFor:'copying'! |
290 |
||
291 |
copyEmptyAndGrow:size |
|
292 |
"return a new instance of the receivers species with size |
|
293 |
nilled elements and any named instance variables copied." |
|
294 |
||
295 |
"special case for Array, which has no named instance vars" |
|
296 |
||
356 | 297 |
|cls| |
298 |
||
299 |
(cls := self class) instSize == 0 ifTrue:[ |
|
300 |
^ cls new:size |
|
249 | 301 |
]. |
302 |
^ super copyEmptyAndGrow:size |
|
303 |
! ! |
|
304 |
||
602 | 305 |
!ArrayedCollection methodsFor:'error handling'! |
306 |
||
307 |
fixedSizeError |
|
1998 | 308 |
"{ Pragma: +optSpace }" |
309 |
||
602 | 310 |
"report an error that size of the collection cannot be changed. |
1171 | 311 |
This is not used right now (instead, a warning is sent to stderr |
1579 | 312 |
in the #grow method); however, future versions of ST/X may no longer |
1171 | 313 |
allow fixed size collection to grow. |
314 |
Read the documentation on why things are that way ..." |
|
602 | 315 |
|
316 |
^ self error:'cannot change size' |
|
1171 | 317 |
|
1579 | 318 |
"Modified: 18.7.1996 / 21:39:09 / cg" |
602 | 319 |
! ! |
320 |
||
321 |
!ArrayedCollection methodsFor:'printing & storing'! |
|
322 |
||
323 |
storeOn:aStream |
|
324 |
"output a printed representation (which can be re-read with readFrom:) |
|
325 |
onto the argument aStream. Redefined to output index access." |
|
326 |
||
327 |
|index "{ Class: SmallInteger }"| |
|
328 |
||
329 |
thisContext isRecursive ifTrue:[ |
|
5498 | 330 |
Object recursiveStoreStringSignal raiseRequestWith:self. |
2290 | 331 |
'ArrayedCollection [error]: storeOn: of self referencing collection.' errorPrintCR. |
332 |
aStream nextPutAll:'#recursive'. |
|
333 |
^ self |
|
602 | 334 |
]. |
335 |
||
336 |
aStream nextPutAll:'(('; nextPutAll:self class name; nextPutAll:' new:'. |
|
337 |
self size printOn:aStream. |
|
338 |
aStream nextPutAll:')'. |
|
339 |
index := 1. |
|
340 |
self do:[:element | |
|
2290 | 341 |
aStream nextPutAll:' at:'. index printOn:aStream. aStream nextPutAll:' put:('. |
342 |
element storeOn:aStream. |
|
343 |
aStream nextPutAll:');'. |
|
344 |
index := index + 1 |
|
602 | 345 |
]. |
346 |
index > 1 ifTrue:[aStream nextPutAll:' yourself']. |
|
347 |
aStream nextPut:$) |
|
348 |
||
349 |
" |
|
350 |
(Array with:(1@2) with:(1->2)) storeString |
|
351 |
" |
|
1414 | 352 |
|
2290 | 353 |
"Modified: 28.1.1997 / 00:39:59 / cg" |
602 | 354 |
! ! |
355 |
||
5557 | 356 |
!ArrayedCollection methodsFor:'queries'! |
357 |
||
358 |
size |
|
359 |
"redefined to re-enable size->basicSize forwarding |
|
360 |
(it is caught in SequencableCollection)" |
|
361 |
||
362 |
^ self basicSize |
|
363 |
! ! |
|
364 |
||
2 | 365 |
!ArrayedCollection methodsFor:'resizing'! |
1 | 366 |
|
2 | 367 |
grow:newSize |
125 | 368 |
"grow the receiver i.e. cut off everything after newSize. |
369 |
Warning: this may be a slow operation due to the use of become |
|
370 |
- you should write your collection classes to avoid the use of become. |
|
155 | 371 |
You have been warned." |
2 | 372 |
|
599 | 373 |
|newArray oldSize sender| |
1 | 374 |
|
27 | 375 |
oldSize := self size. |
376 |
(newSize ~~ oldSize) ifTrue:[ |
|
2125 | 377 |
InfoPrinting ifTrue:[ |
378 |
"/ |
|
379 |
"/ output a warning - you should rewrite your application |
|
380 |
"/ to use some collection which implements grow: more efficient |
|
381 |
"/ (i.e. use OrderedCollection instead of Array ..) |
|
382 |
"/ |
|
383 |
'ArrayedCollection [info]: slow grow operation (' infoPrint. |
|
384 |
self class name infoPrint. ') via ' infoPrint. |
|
385 |
sender := thisContext sender. |
|
386 |
sender methodPrintString infoPrint. |
|
387 |
' from ' infoPrint. sender sender methodPrintString infoPrintCR. |
|
388 |
]. |
|
360 | 389 |
|
2125 | 390 |
newArray := self species new:newSize. |
391 |
newArray replaceFrom:1 to:(newSize min:oldSize) with:self. |
|
392 |
self become:newArray. |
|
2 | 393 |
] |
125 | 394 |
|
395 |
" |
|
590
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parents:
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diff
changeset
|
396 |
#(1 2 3 4 5 6) add:7 |
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|
397 |
#(1 2 3 4 5 6) remove:5 |
125 | 398 |
#(1 2 3 4 5 6) copy grow:3 |
155 | 399 |
#(1 2 3 4 5 6) copy grow:10 |
125 | 400 |
'hello world' copy grow:5 |
155 | 401 |
'hello' copy grow:20 |
125 | 402 |
" |
1428 | 403 |
|
2125 | 404 |
"Modified: 10.1.1997 / 15:14:43 / cg" |
360 | 405 |
! |
406 |
||
407 |
removeAll |
|
1998 | 408 |
"{ Pragma: +optSpace }" |
409 |
||
1164 | 410 |
"remove all elements from the receiver. Returns the receiver. |
411 |
||
1111 | 412 |
For ArrayedCollections (which are actually fixed-size collections), |
413 |
this is a slow operation, since a #become: is required to update |
|
414 |
all owners. Better use a collection which is prepared for growing |
|
415 |
(i.e. an OrderedCollection). |
|
416 |
We output a warning message here, to remind you about that." |
|
417 |
||
2125 | 418 |
'ArrayedCollection [info]: slow removeAll operation (' infoPrint. |
1428 | 419 |
self class name infoPrint. ')' infoPrintCR. |
360 | 420 |
|
421 |
self become:(self copyEmpty) |
|
422 |
||
423 |
" |
|
424 |
#(1 2 3 4 5) copy removeAll |
|
425 |
#(1 2 3 4 5) removeAll |
|
426 |
" |
|
1111 | 427 |
|
2125 | 428 |
"Modified: 10.1.1997 / 15:14:55 / cg" |
2 | 429 |
! ! |
1 | 430 |
|
602 | 431 |
!ArrayedCollection methodsFor:'testing'! |
432 |
||
433 |
includesKey:anIndex |
|
434 |
"return true, if anIndex is a valid key. |
|
435 |
NOTICE: in ST-80, this message is only defined for Dictionaries, |
|
436 |
however, having a common protocol with indexed collections |
|
437 |
often simplifies things." |
|
438 |
||
439 |
^ (anIndex >= 1) and:[anIndex <= self size] |
|
1 | 440 |
|
602 | 441 |
" |
442 |
#(1 2 3) includesKey:4 |
|
443 |
#(1 2 3) includesKey:3 |
|
444 |
" |
|
1 | 445 |
! ! |
446 |
||
2125 | 447 |
!ArrayedCollection class methodsFor:'documentation'! |
628 | 448 |
|
449 |
version |
|
5626 | 450 |
^ '$Header: /cvs/stx/stx/libbasic/ArrayedCollection.st,v 1.48 2000-09-25 14:27:44 cg Exp $' |
628 | 451 |
! ! |