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worked on OrderedCollection.st

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This commit is contained in:
hyunghwan.chung 2018-05-25 17:56:08 +00:00
parent d1cfaed466
commit 4c8797e8ad
1 changed files with 69 additions and 30 deletions
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97
moo/kernel/Collect.moo
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@ -82,7 +82,7 @@ class SequenceableCollection(Collection)
}
}
## -------------------------------------------------------------------------------
## -------------------------------------------------------------------------------
class(#pointer) Array(SequenceableCollection)
{
method size
@ -291,7 +291,7 @@ class(#byte) ByteArray(Array)
class OrderedCollection(SequenceableCollection)
{
var contents.
var buffer.
var firstIndex.
var lastIndex. ## this is the last index plus 1.
@ -308,7 +308,7 @@ class OrderedCollection(SequenceableCollection)
method initialize: size
{
self.contents := Array new: size.
self.buffer := Array new: size.
self.firstIndex := size div: 2.
self.lastIndex := self.firstIndex.
}
@ -318,34 +318,52 @@ class OrderedCollection(SequenceableCollection)
^self.lastIndex - self.firstIndex.
}
method capacity
{
^self.buffer size
}
method at: index
{
| i |
i := index + self.firstIndex.
if (i >= self.firstIndex and: [i < self.lastIndex]) { ^self.contents at: index }.
if (i >= self.firstIndex and: [i < self.lastIndex]) { ^self.buffer at: index }.
Exception signal: ('index ' & index asString & ' out of range').
}
method at: index put: obj
{
## replace an existing element. it doesn't grow the buffer.
| i |
i := index + self.firstIndex.
if (i >= self.firstIndex and: [i < self.lastIndex]) { ^self.contents at: index put: obj }.
if (i >= self.firstIndex and: [i < self.lastIndex]) { ^self.buffer at: index put: obj }.
Exception signal: ('index ' & index asString & ' out of range').
}
method first
{
self emptyCheck.
^self.buffer at: self.firstIndex.
}
method last
{
self emptyCheck.
^self.buffer at: self.lastIndex.
}
method addFirst: obj
{
if (self.firstIndex == 0) { self growBy: 8 shiftBy: 8 }.
self.firstIndex := self.firstIndex - 1.
^self.contents at: self.firstIndex put: obj.
^self.buffer at: self.firstIndex put: obj.
}
method addLast: obj
{
| k |
if (self.lastIndex == self.contents size) { self growBy: 8 shiftBy: 0 }.
k := self.contents at: self.lastIndex put: obj.
if (self.lastIndex == self.buffer size) { self growBy: 8 shiftBy: 0 }.
k := self.buffer at: self.lastIndex put: obj.
self.lastIndex := self.lastIndex + 1.
^k.
}
@ -365,8 +383,8 @@ class OrderedCollection(SequenceableCollection)
{
| obj |
self emptyCheck.
obj := self.contents at: self.firstIndex.
self.contents at: self.firstIndex put: nil.
obj := self.buffer at: self.firstIndex.
self.buffer at: self.firstIndex put: nil.
self.firstIndex := self.firstIndex + 1.
^obj.
}
@ -376,28 +394,38 @@ class OrderedCollection(SequenceableCollection)
| obj li |
self emptyCheck.
li := self.lastIndex - 1.
obj := self.contents at: li.
self.contents at: li put: nil.
obj := self.buffer at: li.
self.buffer at: li put: nil.
self.lastIndex := li.
^obj
}
method removeIndex: index
method removeAtIndex: index
{
## remove the element at the given position.
| obj |
obj := self at: index.
self.contents replaceFrom: index + self.firstIndex
to: self.lastIndex - 2
with: self.contents
startingAt: index + self.firstIndex + 1.
self.lastIndex := self.lastIndex - 1.
self.contents at: self.lastIndex put: nil.
System log(System.Log.FATAL, S'REMOVING ... ', obj, '--->', self.lastIndex, S'\n').
self removeIndex: index + self.firstIndex.
##self.buffer
## replaceFrom: index + self.firstIndex
## to: self.lastIndex - 2
## with: self.buffer
## startingAt: index + self.firstIndex + 1.
##self.lastIndex := self.lastIndex - 1.
##self.buffer at: self.lastIndex put: nil.
^obj
}
method remove: obj ifAbsent: error_block
{
| i |
i := self.firstIndex.
while (i < self.lastIndex)
{
if (obj = (self.buffer at: i)) { ^self removeIndex: i }.
i := i + 1.
}.
^error_block value.
}
## ------------------------------------------------
@ -405,13 +433,13 @@ System log(System.Log.FATAL, S'REMOVING ... ', obj, '--->', self.lastIndex, S'\n
## ------------------------------------------------
method do: block
{
##^self.firstIndex to: (self.lastIndex - 1) do: [:i | block value: (self.contents at: i)].
##^self.firstIndex to: (self.lastIndex - 1) do: [:i | block value: (self.buffer at: i)].
| i |
i := self.firstIndex.
while (i < self.lastIndex)
{
block value: (self.contents at: i).
block value: (self.buffer at: i).
i := i + 1.
}.
}
@ -422,32 +450,43 @@ System log(System.Log.FATAL, S'REMOVING ... ', obj, '--->', self.lastIndex, S'\n
method growBy: grow_size shiftBy: shift_count
{
| newcon |
newcon := (self.contents class) new: (self.contents size + grow_size).
newcon := (self.buffer class) new: (self.buffer size + grow_size).
newcon replaceFrom: (self.firstIndex + shift_count)
to: (self.lastIndex - 1 + shift_count)
with: self.contents startingAt: (self.firstIndex).
self.contents := newcon.
with: self.buffer startingAt: (self.firstIndex).
self.buffer := newcon.
self.firstIndex := self.firstIndex + shift_count.
self.lastIndex := self.lastIndex + shift_count.
}
method insert: obj at: index
method insert: obj before: index
{
## internal use only - index must be between 0 and self size inclusive
| i start |
if (self size == self.contents size) { self growBy: 8 shiftBy: 8 }.
if (self size == self.buffer size) { self growBy: 8 shiftBy: 8 }.
start := self.firstIndex + index.
i := self.lastIndex.
while (i > start)
{
self.contents at: i put: (self.contents at: i - 1).
self.buffer at: i put: (self.buffer at: i - 1).
i := i - 1.
}.
self.lastIndex := self.lastIndex + 1.
self.contents at: index + self.firstIndex put: obj.
self.buffer at: index + self.firstIndex put: obj.
^obj
}
method removeIndex: index
{
self.buffer
replaceFrom: index
to: self.lastIndex - 2
with: self.buffer
startingAt: index + 1.
self.lastIndex := self.lastIndex - 1.
self.buffer at: self.lastIndex put: nil.
}
}
## -------------------------------------------------------------------------------