author | Claus Gittinger <cg@exept.de> |
Thu, 09 Jun 2016 12:42:07 +0200 | |
changeset 3900 | d9f7c0265cc0 |
parent 3838 | c2875c56b614 |
child 4004 | 1c39c504fb49 |
permissions | -rw-r--r-- |
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"{ Package: 'stx:libbasic2' }" |
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"{ NameSpace: Smalltalk }" |
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SequenceableCollection subclass:#SegmentedOrderedCollection |
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instanceVariableNames:'segments maxSegmentSize tally' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Collections-Sequenceable' |
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! |
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!SegmentedOrderedCollection class methodsFor:'documentation'! |
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documentation |
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" |
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SegmentedOrderedCollections are intended as a replacement for huge OrderedCollections or Lists. |
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They keep their elements in chunks (segments), allowing for fast |
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adding/removing at either end AND relatively fast add/remove inside the collection. |
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For huge collections, the performance is much better when adding/removing inner elements. |
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However, notice: when only removing at either end only, an OrderedCollection is faster. |
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The break-even in performance depends on the number of elements and the usage pattern. |
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Consider it with (say) > 10000 elements and many adds/removes from the inside. |
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This class was added to support huge selection-in-lists (>100k elements), which are |
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constantly changing by adding/removing elements at arbitrary positions. |
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Possibly unfinished (may need optimized search and replace). |
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[author:] |
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Claus Gittinger |
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[see also:] |
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Array OrderedCollection BTree |
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" |
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! ! |
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!SegmentedOrderedCollection class methodsFor:'instance creation'! |
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new |
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"return an initialized instance" |
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^ self basicNew initialize. |
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! |
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new:size |
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"return an initialized instance with space for size elements. |
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However, be aware that the logical size is 0" |
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^ self basicNew initialize. |
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! ! |
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!SegmentedOrderedCollection methodsFor:'accessing'! |
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at:index |
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"return the element at index, anInteger" |
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|segStart segEnd| |
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(index between:1 and:tally) ifFalse:[ |
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^ self indexNotIntegerOrOutOfBounds:index |
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]. |
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segStart := 1. |
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segments do:[:seg | |
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segEnd := segStart + (seg size - 1). |
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(index between:segStart and:segEnd) ifTrue:[ |
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^ seg at:(index - segStart + 1). |
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]. |
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segStart := segEnd + 1. |
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]. |
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self error:'oops - should not be here' |
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! |
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at:index put:newElement |
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"set the element at index, to be anInteger. |
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Return anObject (sigh)." |
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|segStart segEnd| |
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(index between:1 and:tally) ifFalse:[ |
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^ self indexNotIntegerOrOutOfBounds:index |
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]. |
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segStart := 1. |
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segments do:[:seg | |
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segEnd := segStart + (seg size - 1). |
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(index between:segStart and:segEnd) ifTrue:[ |
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^ seg at:(index - segStart + 1) put:newElement. |
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]. |
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segStart := segEnd + 1. |
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]. |
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self error:'oops - should not be here' |
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! |
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first |
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"return the first element" |
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tally == 0 ifTrue:[^ self emptyCollectionError]. |
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^ segments first first |
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! |
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last |
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"return the last element" |
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tally == 0 ifTrue:[^ self emptyCollectionError]. |
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^ segments last last |
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! ! |
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!SegmentedOrderedCollection methodsFor:'adding & removing'! |
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add:anObject |
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"add anObject to the end. |
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Returns the object (sigh)" |
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|seg| |
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(seg := segments last) size >= maxSegmentSize ifTrue:[ |
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self splitSegmentAt:(segments size). |
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seg := segments last. |
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]. |
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seg add:anObject. |
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tally := tally + 1. |
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self changed:#insert: with:tally. |
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^ anObject. |
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! |
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add:anObject beforeIndex:index |
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"insert the first argument, anObject into the collection before slot index. |
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Return the receiver (sigh - ST-80 compatibility). |
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Notice, that this is modifies the receiver NOT a copy." |
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|prevSeg segStart| |
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index == (tally+1) ifTrue:[ |
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^ self add:anObject |
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]. |
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segStart := 1. |
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segments do:[:seg | |
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|segEnd| |
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segEnd := segStart + (seg size - 1). |
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(index between:segStart and:segEnd) ifTrue:[ |
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index == segStart ifTrue:[ |
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prevSeg notNil ifTrue:[ |
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prevSeg size < seg size ifTrue:[ |
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prevSeg add:anObject. |
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tally := tally + 1. |
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^ anObject |
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]. |
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]. |
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]. |
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seg add:anObject beforeIndex:(index - segStart + 1). |
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tally := tally + 1. |
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self changed:#insert: with:index. |
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^ anObject |
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]. |
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segStart := segEnd + 1. |
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prevSeg := seg. |
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]. |
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self error:'oops - should not be here' |
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! |
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addFirst:anObject |
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"add anObject to the beginning (insert as new first element)." |
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|seg| |
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(seg := segments first) size >= maxSegmentSize ifTrue:[ |
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171 |
self splitSegmentAt:1. |
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seg := segments first. |
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]. |
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seg addFirst:anObject. |
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tally := tally + 1. |
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self changed:#insert: with:1 |
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! |
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removeAll |
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"remove all elements from the receiver. Returns the receiver." |
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|prevSize| |
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prevSize := tally. |
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segments := OrderedCollection with:(OrderedCollection new). |
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tally := 0. |
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self changed:#removeFrom: with:(Array with:1 with:prevSize) |
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"Modified: / 30-07-2013 / 19:31:05 / cg" |
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191 |
! |
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192 |
|
2916 | 193 |
removeFirst |
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194 |
"remove the first element from the collection; return the element. |
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If there is no element in the receiver collection, raise an error." |
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196 |
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197 |
^ self removeFirstIfAbsent:[self emptyCollectionError] |
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198 |
! |
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199 |
|
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200 |
removeFirstIfAbsent:exceptionBlock |
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201 |
"remove the first element from the collection; return the element. |
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202 |
If there is no element in the receiver collection, return the value from |
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exceptionBlock. |
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Destructive: modifies the receiver" |
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205 |
|
2916 | 206 |
|seg el| |
207 |
||
208 |
tally == 0 ifTrue:[ |
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209 |
^ exceptionBlock value |
2916 | 210 |
]. |
211 |
seg := segments first. |
|
212 |
el := seg removeFirst. |
|
213 |
seg isEmpty ifTrue:[ |
|
3671 | 214 |
tally == 1 ifTrue:[ |
215 |
segments := OrderedCollection with:(OrderedCollection new). |
|
216 |
] ifFalse:[ |
|
217 |
segments removeFirst. |
|
218 |
] |
|
2916 | 219 |
]. |
220 |
tally := tally - 1. |
|
3328
deaef41ffd6f
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
3327
diff
changeset
|
221 |
self changed:#remove: with:1. |
2916 | 222 |
^ el |
223 |
! |
|
224 |
||
225 |
removeFromIndex:startIndex toIndex:endIndex |
|
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
226 |
"remove the elements stored under startIndex up to and including |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
227 |
the elements under stopIndex. |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
228 |
Return the receiver. |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
229 |
Returning the receiver here is a historic leftover - it may change. |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
230 |
Please use yourself in a cascade, if you need the receiver's value |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
231 |
when using this method." |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
232 |
|
2916 | 233 |
|segStart segEnd removing segIndex nextSegIndex seg| |
234 |
||
235 |
(startIndex between:1 and:tally) ifFalse:[ |
|
236 |
^ self indexNotIntegerOrOutOfBounds:startIndex |
|
237 |
]. |
|
238 |
(endIndex between:1 and:tally) ifFalse:[ |
|
239 |
^ self indexNotIntegerOrOutOfBounds:endIndex |
|
240 |
]. |
|
241 |
||
242 |
segStart := 1. |
|
243 |
segIndex := 1. |
|
244 |
removing := false. |
|
3211 | 245 |
[ |
2916 | 246 |
seg := segments at:segIndex. |
247 |
nextSegIndex := segIndex + 1. |
|
248 |
||
249 |
segEnd := segStart + (seg size - 1). |
|
250 |
||
251 |
removing ifFalse:[ |
|
2935
d15b179aabfb
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2916
diff
changeset
|
252 |
"still searching for the segment" |
2916 | 253 |
(startIndex between:segStart and:segEnd) ifTrue:[ |
254 |
(endIndex between:segStart and:segEnd) ifTrue:[ |
|
255 |
seg removeFromIndex:(startIndex - segStart + 1) toIndex:(endIndex - segStart + 1). |
|
256 |
seg isEmpty ifTrue:[ |
|
257 |
segments removeAtIndex:segIndex. |
|
3671 | 258 |
segments isEmpty ifTrue:[ |
259 |
segments := OrderedCollection with:(OrderedCollection new). |
|
260 |
] |
|
2916 | 261 |
]. |
262 |
tally := tally - (endIndex - startIndex + 1). |
|
3328
deaef41ffd6f
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
3327
diff
changeset
|
263 |
self changed:#removeFrom: with:(Array with:startIndex with:endIndex). |
2916 | 264 |
^ self. |
265 |
]. |
|
266 |
seg removeFromIndex:(startIndex - segStart + 1). |
|
267 |
seg isEmpty ifTrue:[ |
|
268 |
segments removeAtIndex:segIndex. |
|
3671 | 269 |
segments isEmpty ifTrue:[ |
270 |
segments := OrderedCollection with:(OrderedCollection new). |
|
271 |
]. |
|
2916 | 272 |
nextSegIndex := segIndex. |
273 |
]. |
|
274 |
removing := true. |
|
275 |
]. |
|
276 |
] ifTrue:[ |
|
277 |
(endIndex between:segStart and:segEnd) ifTrue:[ |
|
278 |
seg removeFromIndex:1 toIndex:(endIndex - segStart + 1). |
|
279 |
seg isEmpty ifTrue:[ |
|
280 |
segments removeAtIndex:segIndex. |
|
3671 | 281 |
segments isEmpty ifTrue:[ |
282 |
segments := OrderedCollection with:(OrderedCollection new). |
|
283 |
] |
|
2916 | 284 |
]. |
285 |
tally := tally - (endIndex - startIndex + 1). |
|
3328
deaef41ffd6f
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
3327
diff
changeset
|
286 |
self changed:#removeFrom: with:(Array with:startIndex with:endIndex). |
2916 | 287 |
^ self. |
288 |
] ifFalse:[ |
|
289 |
"/ remove the whole segment |
|
290 |
segments removeAtIndex:segIndex. |
|
3671 | 291 |
segments isEmpty ifTrue:[ |
292 |
segments := OrderedCollection with:(OrderedCollection new). |
|
293 |
]. |
|
2916 | 294 |
nextSegIndex := segIndex. |
295 |
] |
|
296 |
]. |
|
297 |
segStart := segEnd + 1. |
|
298 |
segIndex := nextSegIndex. |
|
3211 | 299 |
] loop. |
2916 | 300 |
! |
301 |
||
302 |
removeLast |
|
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
303 |
"remove the last element from the collection; return the element" |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
304 |
|
2916 | 305 |
|seg el| |
306 |
||
307 |
tally == 0 ifTrue:[ |
|
308 |
^ self emptyCollectionError |
|
309 |
]. |
|
310 |
seg := segments last. |
|
311 |
el := seg removeLast. |
|
312 |
seg isEmpty ifTrue:[ |
|
3671 | 313 |
tally == 1 ifTrue:[ |
314 |
segments := OrderedCollection with:(OrderedCollection new). |
|
315 |
] ifFalse:[ |
|
316 |
segments removeLast. |
|
317 |
] |
|
2916 | 318 |
]. |
319 |
tally := tally - 1. |
|
3328
deaef41ffd6f
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
3327
diff
changeset
|
320 |
self changed:#remove: with:(1 + tally). |
2916 | 321 |
^ el |
322 |
! ! |
|
323 |
||
324 |
!SegmentedOrderedCollection methodsFor:'enumerating'! |
|
325 |
||
326 |
do:aBlock |
|
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
327 |
"evaluate the argument, aBlock for every element in the collection." |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
328 |
|
2916 | 329 |
segments do:[:seg | |
330 |
seg do:aBlock |
|
331 |
]. |
|
332 |
! |
|
333 |
||
334 |
keysAndValuesDo:aBlock |
|
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
335 |
"evaluate the argument, aBlock for every element in the collection, |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
336 |
passing both index and element as arguments." |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
337 |
|
2916 | 338 |
|idx| |
339 |
||
340 |
idx := 1. |
|
341 |
segments do:[:seg | |
|
342 |
seg do:[:each | |
|
343 |
aBlock value:idx value:each. |
|
344 |
idx := idx + 1. |
|
345 |
] |
|
346 |
]. |
|
347 |
! ! |
|
348 |
||
2948
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
349 |
!SegmentedOrderedCollection methodsFor:'grow & shrink'! |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
350 |
|
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
351 |
grow:newSize |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
352 |
"adjust the logical size to newSize" |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
353 |
|
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
354 |
|numExtraSegments segStart segEnd segIndex seg| |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
355 |
|
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
356 |
newSize == 0 ifTrue:[ |
3671 | 357 |
segments := OrderedCollection with:(OrderedCollection new). |
2948
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
358 |
tally := 0. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
359 |
^ self |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
360 |
]. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
361 |
|
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
362 |
newSize < tally ifTrue:[ |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
363 |
"/ shrinking |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
364 |
segStart := 1. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
365 |
segIndex := 1. |
3211 | 366 |
[ |
2948
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
367 |
seg := segments at:segIndex. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
368 |
segEnd := segStart + (seg size - 1). |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
369 |
(newSize between:segStart and:segEnd) ifTrue:[ |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
370 |
(segments at:segIndex) removeFromIndex:(newSize - segStart + 1 + 1). |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
371 |
segments removeFromIndex:segIndex+1. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
372 |
tally := newSize. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
373 |
^ self |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
374 |
]. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
375 |
segStart := segEnd + 1. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
376 |
segIndex := segIndex + 1. |
3211 | 377 |
] loop. |
2948
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
378 |
"/ not reached |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
379 |
]. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
380 |
|
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
381 |
"/ growing |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
382 |
numExtraSegments := (newSize - tally) // maxSegmentSize + 1. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
383 |
numExtraSegments timesRepeat:[ |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
384 |
segments add:((OrderedCollection new:maxSegmentSize) grow:maxSegmentSize) |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
385 |
]. |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
386 |
tally := newSize |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
387 |
! ! |
dc6efd25377b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2935
diff
changeset
|
388 |
|
2916 | 389 |
!SegmentedOrderedCollection methodsFor:'initialization'! |
390 |
||
391 |
initialize |
|
392 |
"Invoked when a new instance is created." |
|
393 |
||
3066
5ec162bc812d
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
3056
diff
changeset
|
394 |
segments := OrderedCollection with:(OrderedCollection new). |
2916 | 395 |
maxSegmentSize := 200. |
396 |
tally := 0. |
|
3066
5ec162bc812d
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
3056
diff
changeset
|
397 |
|
5ec162bc812d
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
3056
diff
changeset
|
398 |
"Modified: / 30-07-2013 / 19:31:12 / cg" |
2916 | 399 |
! ! |
400 |
||
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
401 |
!SegmentedOrderedCollection methodsFor:'private'! |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
402 |
|
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
403 |
splitSegmentAt:segmentIndex |
3838 | 404 |
|seg segSize rightPart| |
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
405 |
|
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
406 |
seg := segments at:segmentIndex. |
3838 | 407 |
segSize := seg size. |
408 |
||
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
409 |
rightPart := OrderedCollection new:20. |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
410 |
rightPart grow:10. |
3838 | 411 |
rightPart replaceFrom:1 to:10 with:seg startingAt:(segSize - 9). |
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
412 |
|
3838 | 413 |
seg removeFromIndex:(segSize - 9) toIndex:segSize. |
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
414 |
|
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
415 |
segments add:rightPart afterIndex:segmentIndex. |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
416 |
! ! |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
417 |
|
2916 | 418 |
!SegmentedOrderedCollection methodsFor:'queries'! |
419 |
||
3014 | 420 |
isFixedSize |
421 |
"return true if the receiver cannot grow" |
|
422 |
||
423 |
^ false |
|
424 |
! |
|
425 |
||
2916 | 426 |
size |
2949
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
427 |
"return the number of elements in the collection" |
bc40924d516b
class: SegmentedOrderedCollection
Claus Gittinger <cg@exept.de>
parents:
2948
diff
changeset
|
428 |
|
2916 | 429 |
^ tally |
430 |
! ! |
|
431 |
||
432 |
!SegmentedOrderedCollection class methodsFor:'documentation'! |
|
433 |
||
434 |
version |
|
3671 | 435 |
^ '$Header$' |
2916 | 436 |
! |
437 |
||
438 |
version_CVS |
|
3671 | 439 |
^ '$Header$' |
2916 | 440 |
! ! |
441 |