author | Claus Gittinger <cg@exept.de> |
Wed, 07 May 2003 11:48:30 +0200 | |
changeset 7254 | c96b2f224aa2 |
parent 6752 | 3584b9380c85 |
child 8893 | 99996b25482e |
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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240 |
"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" |
|
7254 | 276 |
! |
277 |
||
278 |
withSize:size |
|
279 |
"return a new collection of size. |
|
280 |
For variable size collections, this is different from #new:, |
|
281 |
in that #new: creates an empty collection with preallocated size, |
|
282 |
while #withSize: creates a non empty one." |
|
283 |
||
284 |
^ self new:size. |
|
285 |
||
286 |
" |
|
287 |
(OrderedCollection new:10) |
|
288 |
(OrderedCollection withSize:10) |
|
289 |
(Array new:10) |
|
290 |
(Array withSize:10) |
|
291 |
" |
|
1 | 292 |
! ! |
293 |
||
2125 | 294 |
!ArrayedCollection class methodsFor:'queries'! |
68 | 295 |
|
602 | 296 |
growIsCheap |
297 |
"return true, if this collection can easily grow |
|
298 |
(i.e. without a need for become:). |
|
299 |
Since this is the superclass of all indexed fix-size collections, |
|
300 |
return false here." |
|
68 | 301 |
|
602 | 302 |
^ false |
2 | 303 |
! ! |
304 |
||
249 | 305 |
!ArrayedCollection methodsFor:'copying'! |
306 |
||
307 |
copyEmptyAndGrow:size |
|
308 |
"return a new instance of the receivers species with size |
|
309 |
nilled elements and any named instance variables copied." |
|
310 |
||
311 |
"special case for Array, which has no named instance vars" |
|
312 |
||
356 | 313 |
|cls| |
314 |
||
315 |
(cls := self class) instSize == 0 ifTrue:[ |
|
316 |
^ cls new:size |
|
249 | 317 |
]. |
318 |
^ super copyEmptyAndGrow:size |
|
319 |
! ! |
|
320 |
||
602 | 321 |
!ArrayedCollection methodsFor:'error handling'! |
322 |
||
323 |
fixedSizeError |
|
1998 | 324 |
"{ Pragma: +optSpace }" |
325 |
||
602 | 326 |
"report an error that size of the collection cannot be changed. |
1171 | 327 |
This is not used right now (instead, a warning is sent to stderr |
1579 | 328 |
in the #grow method); however, future versions of ST/X may no longer |
1171 | 329 |
allow fixed size collection to grow. |
330 |
Read the documentation on why things are that way ..." |
|
602 | 331 |
|
332 |
^ self error:'cannot change size' |
|
1171 | 333 |
|
1579 | 334 |
"Modified: 18.7.1996 / 21:39:09 / cg" |
602 | 335 |
! ! |
336 |
||
337 |
!ArrayedCollection methodsFor:'printing & storing'! |
|
338 |
||
339 |
storeOn:aStream |
|
340 |
"output a printed representation (which can be re-read with readFrom:) |
|
341 |
onto the argument aStream. Redefined to output index access." |
|
342 |
||
343 |
|index "{ Class: SmallInteger }"| |
|
344 |
||
345 |
thisContext isRecursive ifTrue:[ |
|
5498 | 346 |
Object recursiveStoreStringSignal raiseRequestWith:self. |
2290 | 347 |
'ArrayedCollection [error]: storeOn: of self referencing collection.' errorPrintCR. |
348 |
aStream nextPutAll:'#recursive'. |
|
349 |
^ self |
|
602 | 350 |
]. |
351 |
||
352 |
aStream nextPutAll:'(('; nextPutAll:self class name; nextPutAll:' new:'. |
|
353 |
self size printOn:aStream. |
|
354 |
aStream nextPutAll:')'. |
|
355 |
index := 1. |
|
356 |
self do:[:element | |
|
2290 | 357 |
aStream nextPutAll:' at:'. index printOn:aStream. aStream nextPutAll:' put:('. |
358 |
element storeOn:aStream. |
|
359 |
aStream nextPutAll:');'. |
|
360 |
index := index + 1 |
|
602 | 361 |
]. |
362 |
index > 1 ifTrue:[aStream nextPutAll:' yourself']. |
|
363 |
aStream nextPut:$) |
|
364 |
||
365 |
" |
|
366 |
(Array with:(1@2) with:(1->2)) storeString |
|
367 |
" |
|
1414 | 368 |
|
2290 | 369 |
"Modified: 28.1.1997 / 00:39:59 / cg" |
602 | 370 |
! ! |
371 |
||
5557 | 372 |
!ArrayedCollection methodsFor:'queries'! |
373 |
||
374 |
size |
|
375 |
"redefined to re-enable size->basicSize forwarding |
|
376 |
(it is caught in SequencableCollection)" |
|
377 |
||
378 |
^ self basicSize |
|
6548 | 379 |
! |
380 |
||
381 |
speciesForAdding |
|
382 |
"redefined here, since grow is not cheap. |
|
383 |
Used by functions which create a growing collection (see collect:with:, for example)" |
|
384 |
||
385 |
^ OrderedCollection |
|
5557 | 386 |
! ! |
387 |
||
2 | 388 |
!ArrayedCollection methodsFor:'resizing'! |
1 | 389 |
|
2 | 390 |
grow:newSize |
125 | 391 |
"grow the receiver i.e. cut off everything after newSize. |
392 |
Warning: this may be a slow operation due to the use of become |
|
393 |
- you should write your collection classes to avoid the use of become. |
|
155 | 394 |
You have been warned." |
2 | 395 |
|
6752 | 396 |
|newArray oldSize sender| |
1 | 397 |
|
27 | 398 |
oldSize := self size. |
399 |
(newSize ~~ oldSize) ifTrue:[ |
|
2125 | 400 |
InfoPrinting ifTrue:[ |
401 |
"/ |
|
402 |
"/ output a warning - you should rewrite your application |
|
403 |
"/ to use some collection which implements grow: more efficient |
|
404 |
"/ (i.e. use OrderedCollection instead of Array ..) |
|
405 |
"/ |
|
406 |
'ArrayedCollection [info]: slow grow operation (' infoPrint. |
|
407 |
self class name infoPrint. ') via ' infoPrint. |
|
6752 | 408 |
sender := thisContext sender. |
409 |
sender methodPrintString infoPrint. |
|
410 |
' from ' infoPrint. sender sender methodPrintString infoPrintCR. |
|
2125 | 411 |
]. |
360 | 412 |
|
2125 | 413 |
newArray := self species new:newSize. |
414 |
newArray replaceFrom:1 to:(newSize min:oldSize) with:self. |
|
415 |
self become:newArray. |
|
2 | 416 |
] |
125 | 417 |
|
418 |
" |
|
590
3ffb78fb2716
report sender in slow grow warning
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parents:
528
diff
changeset
|
419 |
#(1 2 3 4 5 6) add:7 |
3ffb78fb2716
report sender in slow grow warning
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parents:
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diff
changeset
|
420 |
#(1 2 3 4 5 6) remove:5 |
125 | 421 |
#(1 2 3 4 5 6) copy grow:3 |
155 | 422 |
#(1 2 3 4 5 6) copy grow:10 |
125 | 423 |
'hello world' copy grow:5 |
155 | 424 |
'hello' copy grow:20 |
125 | 425 |
" |
1428 | 426 |
|
2125 | 427 |
"Modified: 10.1.1997 / 15:14:43 / cg" |
360 | 428 |
! |
429 |
||
430 |
removeAll |
|
1998 | 431 |
"{ Pragma: +optSpace }" |
432 |
||
1164 | 433 |
"remove all elements from the receiver. Returns the receiver. |
434 |
||
1111 | 435 |
For ArrayedCollections (which are actually fixed-size collections), |
436 |
this is a slow operation, since a #become: is required to update |
|
437 |
all owners. Better use a collection which is prepared for growing |
|
438 |
(i.e. an OrderedCollection). |
|
439 |
We output a warning message here, to remind you about that." |
|
440 |
||
2125 | 441 |
'ArrayedCollection [info]: slow removeAll operation (' infoPrint. |
1428 | 442 |
self class name infoPrint. ')' infoPrintCR. |
360 | 443 |
|
444 |
self become:(self copyEmpty) |
|
445 |
||
446 |
" |
|
447 |
#(1 2 3 4 5) copy removeAll |
|
448 |
#(1 2 3 4 5) removeAll |
|
449 |
" |
|
1111 | 450 |
|
2125 | 451 |
"Modified: 10.1.1997 / 15:14:55 / cg" |
2 | 452 |
! ! |
1 | 453 |
|
2125 | 454 |
!ArrayedCollection class methodsFor:'documentation'! |
628 | 455 |
|
456 |
version |
|
7254 | 457 |
^ '$Header: /cvs/stx/stx/libbasic/ArrayedCollection.st,v 1.53 2003-05-07 09:48:30 cg Exp $' |
628 | 458 |
! ! |