public class MTextProperty
{
- private enum MTextPropertyFlagMask
- {
- FRONT_STICKY = 1,
- REAR_STICKY = 2
- };
-
- internal MProperty prop;
- internal byte flags;
- internal MText mtext;
- internal from;
- internal to;
+ private MProperty prop;
+ private bool front_sticky;
+ private bool rear_sticky;
+ private MText mtext;
- public MProperty Prop
- {
- get { return prop; }
- }
- public bool FrontSticky
- {
- get { return (flags & MTextPropertyFlagMask.FRONT_STICKY) != 0; }
- }
- public bool RearSticky
- {
- get { return (flags & MTextPropertyFlagMask.REAR_STICKY) != 0; }
- }
- public MText mtext
- {
- get { return mtext; }
- }
- public int from
- {
- get { return from; }
- }
- public int to
- {
- get { return to; }
- }
+ public MProperty Prop { get { return prop; } }
+ public bool FrontSticky { get { return front_sticky; } }
+ public bool RearSticky { get { return rear_sticky; } }
+ public MText Mtext { get { return mtext; } }
- public MTextProperty (bool front_sticky, bool rear_sticky)
+ public MTextProperty (MProperty prop, bool front_sticky, bool rear_sticky)
{
- this.flags = ((front_sticky ? MTextPropertyFlagMask.FRONT_STICKY : 0)
- | (rear_sticky ? MTextPropertyFlagMask.REAR_STICKY : 0));
+ this.prop = prop;
+ this.front_sticky = front_sticky;
+ this.rear_sticky = rear_sticky;
}
}
#if false
public enum MTextFormat format;
#endif
-
- private struct KeyIntervalPair
- {
- object key;
- MInterval interval;
- };
-
private StringBuilder sb;
private int nchars;
private int cache_pos;
private int cache_idx;
- private stack<KeyIntervalPair> root_intervals;
+ private MPlist intervals;
private MProperty default_property;
private bool read_only;
sb.Insert (pos_idx, mt2.sb.ToString (from_idx, to_idx - from_idx));
nchars += to - from;
- if (root_interval != null)
+
+ if (mt2.intervals != null
+ && ! mt2.intervals.tailp)
{
- MInterval interval = (mt2.root_interval == null
- ? null
- : mt2.root_interval.CopyTree (from, to));
- root_interval.Insert (pos, interval);
+ if (intervals == null)
+ intervals = new MPlist ();
+ foreach (MInterval interval in mt2.intervals)
+ if (intervals.find (interval.key) == null)
+ intervals.push (interval.key, new MInterval (interval.key, mt));
+ }
+
+ if (intervals != null)
+ {
+ foreach (MInterval root in intervals)
+ {
+ MInterval interval;
+
+ if (mt2.intervals != null
+ && ! mt2.intervals.tailp)
+ {
+ interval = mt2.intervals.find (root.key);
+ if (interval != null)
+ interval = interval.CopyTree (from, to);
+ }
+ if (interval == null)
+ interval = new MInterval (root.key, to - from);
+ root.Insert (pos, interval);
}
}
public void PushProp (int from, int to, MTextProperty prop)
{
- if (root_interval == null)
- root_interval = new MInterval (this);
+ MInterval root;
+
+ if (intervals == null
+ || (root = intervals.find (prop.key)) )
+ intervals = new MPlist (prop.key, new MInterval (prop.key, this));
+
root_interval.Push (from, to, prop);
}
// [1 (0 1)] [1 (2 3)]
private int total_length;
private int from, to;
- private object key;
+ private MSymbol key;
private Stack<MTextProperty> stack;
private MInterval left, right, parent;
private MText mtext;
- public MInterval (object key, int length)
+ public MInterval (MSymbol key, int length)
{
if (length <= 0)
throw new Exception ("Invalid interval length");
stack = new Stack<MTextProperty> ();
}
- private MInterval (object key, int length, Stack<MTextProperty> stack)
+ private MInterval (MSymbol key, int length, Stack<MTextProperty> stack)
{
this.key = key;
total_length = length;
stack = new Stack<MTextProperty> (stack);
}
- public MInterval (object key, MText mt)
+ public MInterval (MSymbol key, MText mt)
{
this.key = key;
mtext = mt;
stack = new Stack<MTextProperty> ();
}
- private MInterval find (int pos)
+ private void update_from_to ()
{
if (parent != null)
{
- from = parent.from - total_length;
- if (left != null)
- from += left.total_length;
- to = parent.from;
- if (right != null)
- to -= right.total_length;
+ from = parent.from - total_length + LeftLength;
+ to = parent.from - RightLength;
}
+ }
+
+ private int LeftLength
+ {
+ get { return (left == null ? 0 : left.total_length); }
+ }
+
+ private int RightLength
+ {
+ get { return (right == null ? 0 : right.total_length); }
+ }
+
+ private MInterval LeftMostNode
+ {
+ get { return (left == null ? this : left.LeftMostNode); }
+ }
+
+ private MInterval RightMostNode
+ {
+ get { return (right == null ? this : right.RightMostNode); }
+ }
+
+ private MInterval LeftNode {
+ get {
+ MInterval i;
+
+ if (left != null)
+ for (i = left; i.right != null; i = i.right);
+ else
+ for (i = parent; i != null && i.left == null; i = i.parent);
+ return i;
+ }
+ }
+
+ private MInterval RightNode {
+ get {
+ MInterval i;
+
+ if (right != null)
+ for (i = right; i.left != null; i = i.left);
+ else
+ for (i = parent; i != null && i.right == null; i = i.parent);
+ return i;
+ }
+ }
+
+ private MInterval find (int pos)
+ {
+ update_from_to ();
if (pos < from)
return left.find (pos);
if (pos >= to)
MInterval c1;
if (parent == null)
- mtext.update_root_interval (key, right);
+ mtext.root_intervals.put (key, right);
else if (parent.left == this)
parent.left = right;
else
private MInterval balance ()
{
- MInterval interval = this;
+ MInteval i = this;
while (true)
{
// .-this-.
// .-left-. .-right-.
- int left_length = (left == null ? 0 : left.total_length);
- int right_length = (right == null ? 0 : right.total_length);
- int length = total_length - left_length - right_length;
- int diff = ((left_length + length) -
- - (interval.total_end - this_end));
- int abs = Math.Abs (diff);
-
- if (left == null)
- diff =
-
- if (abs < this_end - this_start)
- break;
- if (diff < 0)
+ // c1 c2 c3 c4
+ int diff = i.LeftLength - i.RightLength;
+ int new_diff;
+
+ if (diff > 0)
{
- interval = interval.promote_right ();
- interval.left.balance ();
+ new_diff = (i.total_length - i.LeftLength
+ + i.left.RightLength - i.left.LeftLength);
+ if (Math.Abs (new_diff) >= diff)
+ break;
+ i = i.promote_left ();
+ i.right.balance ();
}
- else
+ else if (diff < 0)
{
- interval = interval.promote_left ();
- interval.right.balance ();
+ new_diff = (i.total_length - i.RightLength
+ + i.right.LeftLength - i.right.RightLength);
+ if (Math.Abs (new_diff) >= diff)
+ break;
+ i = i.promote_right ();
+ i.left.balance ();
}
}
return interval;
public MInterval CopyTree (int start, int end)
{
- MInterval interval_start, interval_end, interval;
- int offset_start, offset_end;
-
- start <<= 2;
- end <<= 2;
- interval_start = find (start, out offset_start);
- interval_end = find (end, out offset_end);
-
- interval = new MInterval ();
- interval.total_start = 0;
- interval.total_end = end - start;
- interval.stack = new Stack<MTextProperty> (interval_start.stack);
- interval = interval.divide_right (offset_start);
- while (interval_start != interval_end)
+ MInterval this_copy, left_copy, right_copy;
+
+ update_from_to ();
+ if (start < from)
{
- interval_start = interval_start.Right;
- interval = interval.divide_right (interval_start.End
- - interval_start.Start);
+ if (end <= from)
+ return left.CopyTree (start, end);
+ left_copy = left.CopyTree (start, from);
}
- return interval;
- }
-
- private MInterval CopyNode ()
- {
- return new MInterval (total_start, total_end, stack);
- }
-
- private int Start {
- get {
- return (left == null ? total_start : total_start + left.total_end);
- }
- }
-
- private int End {
- get {
- return (right == null ? total_end : total_end + right.total_start);
- }
- }
-
- private MInterval Left {
- get {
- MInterval i;
- if (left != null)
- for (i = left; i.right != null; i = i.right);
- else
- for (i = parent; i != null && i.total_start == 0; i = i.parent);
- return i;
- }
- }
-
- private MInterval Right {
- get {
- MInterval i;
- if (right != null)
- for (i = right; i.left != null; i = i.left);
- else
- for (i = parent; i != null && i.total_start < 0; i = i.parent);
- return i;
- }
- }
-
- public void Push (int start, int end, MTextProperty prop)
- {
- start <<= 2;
- if (prop.FrontSticky)
- start--;
- else
- start++;
- end <<= 2;
- if (prop.RearSticky)
- end++;
- else
- end--;
- if (start >= end)
- throw new Exception ("Invalid Text Property Range");
-
- push (start, end, prop);
- }
-
- public void Insert (int pos, MInterval interval)
- {
- if (pos < Start)
- Left.Insert (pos - total_start, interval);
- else if (pos > End)
- Right.Insert (pos - total_end, interval);
- else
+ else if (end > to)
{
- // position: 0 1 2 3
- // index: -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13
- // this |-----------<-----a----->-----|
- // |-----b-----| |--c--|
- //
- // interval <--A-->----------->
- // <--B-->----->
- // <--C-->
- //
- // new |-----------<-a-A->-----------------------|
- // |-----b-----| |-----------<--a-->-----|
- // |-a-B->-----| |--c--|
- // |-a-C-|
- int len = interval.total_end - interval.total_start;
- MInterval temp;
-
- total_end += len;
- for (temp = this; temp.parent != null;
- temp = temp.parent)
- temp.parent.total_end += len;
- temp = new MInterval ();
- temp.stack = new Stack<MTextProperty> (stack);
-
- temp = divide_right (Start + 2);
- temp.left = interval;
- right = interval;
- }
-
+ if (start >= to)
+ return right.CopyTree (start, end);
+ right_copy = right.CopyTree (to, end);
+ }
+ this_copy = MInteval (key, end - start, stack);
+ this_copy.left = left_copy;
+ this_copy.right = right_copy;
+ return this_copy;
}
+ // this-. ==> this-.
+ // right newright-.
+ // right
private MInterval divide_right (int pos)
{
- MInterval interval = CopyNode ();
- int this_start = Start;
- int this_end = End;
+ MInterval interval;
- if (left == null
- || (right != null && left.total_end < - right.total_start))
- {
- interval.left = this;
- interval.right = right;
- interval.parent = parent;
- if (parent != null)
- {
- if (total_start == 0)
- parent.left = interval;
- else
- parent.right = interval;
- }
- total_start = 0;
- total_end = pos - this_start;
- }
- else
+ update_from_to ();
+ interval = new MInterval (key, to - pos, stack);
+
+ total_length -= to - pos;
+ if (right != null)
{
- interval.total_start = pos - this_end;
- interval.total_end = 0;
- if (right != null)
- right.parent = interval;
- right = interval;
+ right->parent = interval;
+ interval.total_length += right->total_length;
}
-
+ interval->parent = this;
+ right = interval;
return interval;
}
+ // .-this ==> .-this
+ // left .-newleft
+ // left
private MInterval divide_left (int pos)
{
MInterval interval = CopyNode ();
return interval;
}
- private void push (int start, int end, MTextProperty prop)
+ public void Insert (int pos, MInterval interval)
{
- int this_start = Start;
- int this_end = End;
+ update_from_to ();
+ if (pos < from)
+ {
+ LeftNode.Insert (pos, interval);
+ return;
+ }
+ if (pos >= to)
+ {
+ RightNode.Insert (pos, interval);
+ return;
+ }
+ if (pos > from)
+ {
+ divide_right (pos).Insert (pos, interval);
+ return;
+ }
- if (start < this_start)
+ // POS == FROM
+ if (left != null && LeftNode.stack.Count > 0)
{
- if (end <= this_start)
+ Stack<MTextProperty> s = new Stack<MTextProperty> ();
+
+ foreach (MTextProperty p in LeftNode.stack)
+ if (p.RearSticky)
+ s.Push (p);
+ if (s.Count > 0)
{
- Left.push (start, end, prop);
- return;
+ for (MInterval i = interval.LeftMost;
+ i != null && i.stack.Count == 0;
+ i = i.LeftNode)
+ foreach (MTextProperty p in s)
+ i.stack.Push (p);
}
- Left.push (start, this_start, prop);
- start = this_start;
}
- if (this_end < end)
+ if (stack.Count > 0)
{
- if (this_end < start)
+ Stack<MTextProperty> s = new Stack<MTextProperty> ();
+
+ foreach (MTextProperty p in stack)
+ if (p.FrontSticky)
+ s.Push (p);
+ if (s.Count > 0)
{
- Right.push (start, end, prop);
- return;
+ for (MInterval i = interval.RightMostNode;
+ i != null && i.stack.Count == 0;
+ i = i.RightNode)
+ foreach (MTextProperty p in s)
+ i.stack.Push (p);
}
- Right.push (this_end, end, prop);
- end = this_end;
}
- if (this_start < start)
- divide_left (start);
- if (end < this_end)
+
+ // INTERVAL is ready to insert.
+ //
+ // .-this-. ==> .-this-.
+ // left-. left-.
+ // child interval
+ // child
+
+ if (left)
+ {
+ MInterval i = left.RightMostNode;
+
+ i.left = interval;
+ interval->parent = i;
+ for (; i != null; i = i.parent)
+ i.total_length += interval.total_length;
+ }
+ else
+ {
+ left = interval;
+
+ for (MInterval i = this; i != null; i = i.parent)
+ i.total_length += interval.total_length;
+ }
+ }
+
+ public MTextProperty Push (int start, int end, MTextProperty prop)
+ {
+ update_from_to ();
+ if (start < from)
+ {
+ left.Push (start, end, prop);
+ if (end <= from)
+ return prop;
+ start = from;
+ }
+ else if (end > to)
+ {
+ right.Push (start, end, prop);
+ if (start >= to)
+ return prop;
+ end = to;
+ }
+
+ if (start > from)
+ divide_left (from);
+ if (end < to)
divide_right (end);
stack.Push (prop);
+ return prop;
}
}
projects / m17n / m17n-lib-cs.git / commitdiff