using System.Text;
using System.Collections;
using System.Collections.Generic;
+using M17N;
using M17N.Core;
namespace M17N.Core
{
internal MSymbol key;
internal object val;
- private bool front_sticky;
- private bool rear_sticky;
+
+ [FlagsAttribute]
+ internal enum Flag : byte
+ {
+ None = 0,
+ FrontSticky = 1,
+ RearSticky = 2,
+ Sensitive = 4
+ };
+ internal Flag flags;
public MSymbol Key { get { return key; } }
public object Val { get { return val; } }
- public bool FrontSticky { get { return front_sticky; } }
- public bool RearSticky { get { return rear_sticky; } }
+ public bool FrontSticky
+ {
+ get { return (flags & Flag.FrontSticky) != Flag.None; }
+ }
+ public bool RearSticky
+ {
+ get { return (flags & Flag.RearSticky) != Flag.None; }
+ }
+ public bool Sensitive
+ {
+ get { return (flags & Flag.Sensitive) != Flag.None; }
+ }
public MTextProperty (MSymbol key, object val)
{
}
public MTextProperty (MSymbol key, object val,
- bool front_sticky, bool rear_sticky)
+ bool front_sticky, bool rear_sticky, bool sensitive)
{
this.key = key;
this.val = val;
- this.front_sticky = front_sticky;
- this.rear_sticky = rear_sticky;
+ if (front_sticky)
+ flags |= Flag.FrontSticky;
+ if (rear_sticky)
+ flags |= Flag.RearSticky;
+ if (sensitive)
+ flags |= Flag.Sensitive;
+ }
+
+ public override string ToString ()
+ {
+ return key.ToString () + ":" + val;
}
}
return this.sb.ToString ().CompareTo (other.sb.ToString ());
}
- public override String ToString () { return sb.ToString (); }
+ public override String ToString () { return "\"" + sb.ToString () + "\""; }
private static bool surrogate_high_p (char c)
{
return i;
}
+ private void check_pos (int pos, bool tail_ok)
+ {
+ if (pos < 0 || (tail_ok ? pos > nchars : pos >= nchars))
+ throw new Exception ("Invalid MText position:" + pos);
+ }
+
+ private bool check_range (int from, int to, bool zero_ok)
+ {
+ if (from < 0 || (zero_ok ? from > to : from >= to)
+ || to > nchars)
+ throw new Exception ("Invalid MText range");
+ return (from == to);
+ }
+
private void insert (int pos, MText mt2, int from, int to)
{
+ check_pos (pos, true);
+
+ if (from == to)
+ return;
int pos_idx = pos_to_idx (this, pos);
int from_idx = pos_to_idx (mt2, from);
int to_idx = pos_to_idx (mt2, to);
nchars += to - from;
foreach (MPlist plist in mt2.intervals)
- if (intervals.find (plist.Key) == null)
- intervals.push (plist.Key, new MInterval (plist.Key, this));
+ if (intervals.Find (plist.Key) == null)
+ intervals.Push (plist.Key, new MInterval (plist.Key, this));
foreach (MPlist plist in intervals)
{
- MPlist p = mt2.intervals.find (plist.Key);
+ MPlist p = mt2.intervals.Find (plist.Key);
MInterval interval;
- if (p.IsEmpty)
- interval = new MInterval (plist.Key, to - from);
+ if (p == null)
+ interval = new MInterval (plist.Key, this, to - from);
else
- interval = ((MInterval) p.Val).copy (from, to);
- ((MInterval) plist.Val).insert (pos, interval);
+ interval = ((MInterval) p.Val).Copy (from, to);
+ ((MInterval) plist.Val).Insert (pos, interval);
}
}
+ private void insert (int pos, int c)
+ {
+ check_pos (pos, true);
+
+ int pos_idx = pos_to_idx (this, pos);
+
+ if (c < 0x10000)
+ {
+ char ch = (char) c;
+ sb.Insert (pos_idx, ch);
+ }
+ else
+ {
+ char high = (char) (0xD800 + ((c - 0x10000) >> 10));
+ char low = (char) (0xDC00 + ((c - 0x10000) & 0x3FF));
+ sb.Insert (pos_idx, low);
+ sb.Insert (pos_idx, high);
+ }
+ nchars++;
+ foreach (MPlist plist in intervals)
+ ((MInterval) plist.Val).Insert (pos,
+ new MInterval (plist.Key, this, 1));
+ }
+
public int this[int i]
{
set {
}
}
- public MText dup ()
+ public MText Dup ()
{
- return (new MText (sb.ToString ()));
+ MText mt = new MText (sb.ToString ());
+
+ foreach (MPlist p in intervals)
+ mt.intervals.Add (p.Key, ((MInterval) p.Val).Copy (0, Length));
+ return mt;
+ }
+
+ public MText Ins (int pos, int c)
+ {
+ insert (pos, c);
+ return this;
}
- public MText ins (int pos, MText mt)
+ public MText Ins (int pos, MText mt)
{
insert (pos, mt, 0, mt.nchars);
return this;
}
- public MText ins (int pos, MText mt, int from, int to)
+ public MText Ins (int pos, MText mt, int from, int to)
{
insert (pos, mt, from, to);
return this;
}
- public MText del (int from, int to)
+ public MText Cat (int c)
{
+ insert (nchars, c);
+ return this;
+ }
+
+ public MText Del (int from, int to)
+ {
+ if (check_range (from, to, true))
+ return this;
+
sb.Remove (from, pos_to_idx (this, to) - pos_to_idx (this, from));
nchars -= to - from;
- foreach (MPlist plist in intervals)
- ((MInterval) plist.Val).delete (from, to);
+ if (nchars > 0)
+ foreach (MPlist plist in intervals)
+ ((MInterval) plist.Val).Delete (from, to);
+ else
+ intervals = new MPlist ();
return this;
}
- public object get_prop (int pos, MSymbol key)
+ public object GetProp (int pos, MSymbol key)
{
- MInterval i = (MInterval) intervals.find (key).Val;
+ check_pos (pos, false);
+ MInterval i = (MInterval) intervals.Get (key);
if (i == null)
return null;
- MTextProperty prop = i.get (pos);
+ MTextProperty prop = i.Get (pos);
return (prop != null ? prop.Val : null);
}
- public object get_prop (int pos, MSymbol key, out MTextProperty prop)
+ public object GetProp (int pos, MSymbol key, out MTextProperty prop)
{
- MInterval i = (MInterval) intervals.find (key).Val;
+ check_pos (pos, false);
+ MInterval i = (MInterval) intervals.Get (key);
if (i == null)
return (prop = null);
- prop = i.get (pos);
+ prop = i.Get (pos);
return (prop != null ? prop.Val : null);
}
- public object get_prop (int pos, MSymbol key, out MTextProperty[] array)
+ public object GetProp (int pos, MSymbol key, out MTextProperty[] array)
{
- MInterval i = (MInterval) intervals.find (key).Val;
+ check_pos (pos, false);
+ MInterval i = (MInterval) intervals.Get (key);
if (i == null)
return (array = null);
- MTextProperty prop = i.get (pos, out array);
+ MTextProperty prop = i.Get (pos, out array);
return (prop != null ? prop.Val : null);
}
- public void push_prop (int from, int to, MSymbol key, object val)
+ public void PushProp (int from, int to, MSymbol key, object val)
{
- push_prop (from, to, new MTextProperty (key, val));
+ if (! check_range (from, to, true))
+ PushProp (from, to, new MTextProperty (key, val));
}
- public void push_prop (int from, int to, MTextProperty prop)
+ public void PushProp (int from, int to, MTextProperty prop)
{
if (from < 0)
{
if (default_property == null)
default_property = new MPlist ();
- default_property.push (prop.key, prop.val);
+ default_property.Push (prop.key, prop.val);
}
else
{
- MInterval root = (MInterval) intervals.find (prop.key).Val;
+ if (check_range (from, to, true))
+ return;
+
+ MPlist p = intervals.Find (prop.key);
+ MInterval root;
- if (root == null)
+ if (p == null)
{
root = new MInterval (prop.key, this);
- intervals.push (prop.key, root);
+ intervals.Push (prop.key, root);
}
+ else
+ root = (MInterval) p.Val;
+
root.Push (from, to, prop);
}
}
+ public void PopProp (int from, int to, MSymbol key)
+ {
+ if (from < 0)
+ {
+ if (default_property == null)
+ return;
+ MPlist p = default_property.Find (key);
+
+ if (p != null)
+ p.Pop ();
+ }
+ else
+ {
+ if (check_range (from, to, true))
+ return;
+
+ MPlist p = intervals.Find (key);
+
+ if (p != null)
+ {
+ MInterval root = (MInterval) p.Val;
+ root.Pop (from, to);
+ root.MergeAfterChange (from, to);
+ }
+ }
+ }
+
+ public void DumpProp ()
+ {
+ Console.Write ("(");
+ foreach (MPlist p in intervals)
+ ((MInterval) p.Val).Dump (true);
+ Console.WriteLine (")");
+ }
+
+ public void DumpPropNested ()
+ {
+ foreach (MPlist p in intervals)
+ ((MInterval) p.Val).DumpNested (true);
+ }
+
private class MInterval
{
// position: 0 1 2 3 4 5 6 7
// [7 (3 4)]
// [3 (1 2)] [3 (4 6)]
// [1 (0 1)] [2 (2 3)] [1 (6 7)]
- private int total_length;
- private int from, to;
- private MSymbol key;
- private Stack<MTextProperty> stack;
- private MInterval left, right, parent;
+ //
+ private static int count = 0;
+ private int ID;
+ private int Length;
+ private int From, To;
+ private MSymbol Key;
+ private MPlist Stack;
+ private MInterval Left, Right, Parent;
private MText mtext;
- public MInterval (MSymbol key, int length)
+ public MInterval (MSymbol key, MText mt, int length)
{
if (length <= 0)
throw new Exception ("Invalid interval length");
- this.key = key;
- total_length = length;
- stack = new Stack<MTextProperty> ();
+ Key = key;
+ mtext = mt;
+ Length = length;
+ Stack = new MPlist ();
+ ID = count++;
}
public MInterval (MSymbol key, MText mt)
{
- this.key = key;
+ Key = key;
mtext = mt;
- total_length = mt.sb.Length;
- from = 0;
- to = total_length;
- stack = new Stack<MTextProperty> ();
+ Length = mt.sb.Length;
+ From = 0;
+ To = Length;
+ Stack = new MPlist ();
+ ID = count++;
}
- public MTextProperty get (int pos)
+ public MTextProperty Get (int pos)
{
MInterval i = find (pos);
- return (i.stack.Count > 0 ? i.stack.Peek () : null);
+ return (i.Stack.IsEmpty ? null : (MTextProperty) i.Stack.Val);
}
- public MTextProperty get (int pos, out MTextProperty[] array)
+ public MTextProperty Get (int pos, out MTextProperty[] array)
{
MInterval i = find (pos);
- if (i.stack.Count == 0)
+ if (i.Stack.IsEmpty)
{
array = null;
return null;
}
- array = i.stack.ToArray ();
- return i.stack.Peek ();
+ array = new MTextProperty[i.Stack.Count];
+
+ int idx;
+ MPlist p;
+ for (idx = 0, p = i.Stack; ! p.IsEmpty; idx++, p = p.Next)
+ array[idx] = (MTextProperty) p.Val;
+ return array[0];
}
- private MInterval (MSymbol key, int length, Stack<MTextProperty> stack)
+ private MInterval (MSymbol key, MText mt, int length, MPlist stack)
{
- this.key = key;
- total_length = length;
- from = 0;
- to = total_length;
- stack = new Stack<MTextProperty> (stack);
+ Key = key;
+ mtext = mt;
+ Length = length;
+ From = 0;
+ To = Length;
+ Stack = stack.Clone ();
+ ID = count++;
}
-
private void update_from_to ()
{
- if (parent != null)
+ if (Parent == null)
+ {
+ From = LeftLength;
+ To = Length - RightLength;
+ }
+ else if (Parent.Left == this)
+ {
+ From = Parent.From - Length + LeftLength;
+ To = Parent.From - RightLength;
+ }
+ else
{
- from = parent.from - total_length + LeftLength;
- to = parent.from - RightLength;
+ From = Parent.To + LeftLength;
+ To = Parent.To + Length - RightLength;
}
}
private int LeftLength
{
- get { return (left == null ? 0 : left.total_length); }
+ get { return (Left == null ? 0 : Left.Length); }
}
private int RightLength
{
- get { return (right == null ? 0 : right.total_length); }
+ get { return (Right == null ? 0 : Right.Length); }
}
- private MInterval LeftMostNode
+ private MInterval LeftMost
{
- get { return (left == null ? this : left.LeftMostNode); }
+ get {
+ if (Left == null)
+ return this;
+ Left.update_from_to ();
+ return Left.LeftMost;
+ }
}
- private MInterval RightMostNode
+ private MInterval RightMost
{
- get { return (right == null ? this : right.RightMostNode); }
+ get {
+ if (Right == null)
+ return this;
+ Right.update_from_to ();
+ return Right.RightMost;
+ }
}
- private MInterval LeftNode {
+ private MInterval Prev {
get {
MInterval i;
- if (left != null)
- for (i = left; i.right != null; i = i.right);
+ if (Left != null)
+ for (i = Left; i.Right != null; i = i.Right)
+ i.update_from_to ();
else
- for (i = parent; i != null && i.left == null; i = i.parent);
+ {
+ MInterval child = this;
+ for (i = Parent; i != null && i.Left == child;
+ child = i, i = i.Parent)
+ i.update_from_to ();
+ }
return i;
}
}
- private MInterval RightNode {
+ private MInterval Next {
get {
MInterval i;
- if (right != null)
- for (i = right; i.left != null; i = i.left);
+ if (Right != null)
+ for (i = Right; i.Left != null; i = i.Left)
+ i.update_from_to ();
else
- for (i = parent; i != null && i.right == null; i = i.parent);
+ {
+ MInterval child = this;
+ for (i = Parent; i != null && i.Right == child;
+ child = i, i = i.Parent)
+ i.update_from_to ();
+ }
return i;
}
}
private MInterval find (int pos)
{
update_from_to ();
- if (pos < from)
- return left.find (pos);
- if (pos >= to)
- return right.find (pos);
+ if (pos < From)
+ return Left.find (pos);
+ if (pos >= To)
+ return Right.find (pos);
return this;
}
+ private bool mergeable (MInterval i)
+ {
+ MPlist p1, p2;
+
+ for (p1 = Stack, p2 = i.Stack; ! p1.IsEmpty && ! p2.IsEmpty;
+ p1 = p1.Next, p2 = p2.Next)
+ if (p1.Val != p2.Val)
+ return false;
+ return (p1.IsEmpty && p2.IsEmpty);
+ }
+
// p-. or .-p p-. or .-p
// .-this-. .-right-.
// left .-right-. -> .-this-. c2
// c1 c2 left c1
private MInterval promote_right ()
{
- int right_length = right.total_length;
+ int right_length = Right.Length;
MInterval c1;
- if (parent == null)
- mtext.intervals.put (key, right);
- else if (parent.left == this)
- parent.left = right;
+ if (Parent == null)
+ mtext.intervals.Put (Key, Right);
+ else if (Parent.Left == this)
+ Parent.Left = Right;
else
- parent.right = right;
- right.parent = parent;
- c1 = right.left;
- right.left = this;
-
- parent = right;
- right = c1;
- parent.total_length += total_length;
- total_length -= right_length;
+ Parent.Right = Right;
+ Right.Parent = Parent;
+ c1 = Right.Left;
+ Right.Left = this;
+
+ Parent = Right;
+ Right = c1;
+ Parent.Length += Length;
+ Length -= right_length;
if (c1 != null)
{
- c1.parent = this;
- parent.total_length -= c1.total_length;
- total_length += c1.total_length;
+ c1.Parent = this;
+ Parent.Length -= c1.Length;
+ Length += c1.Length;
}
- return parent;
+ return Parent;
}
// p-. or .-p p-. or .-p
// c1 c2 c2 right
private MInterval promote_left ()
{
- int left_length = left.total_length;
+ int left_length = Left.Length;
MInterval c1;
- if (parent == null)
- mtext.intervals.put (key, left);
- else if (parent.left == this)
- parent.left = left;
+ if (Parent == null)
+ mtext.intervals.Put (Key, Left);
+ else if (Parent.Left == this)
+ Parent.Left = Left;
else
- parent.right = left;
- left.parent = parent;
- c1 = left.left;
- left.right = this;
-
- parent = left;
- left = c1;
- parent.total_length += total_length;
- total_length -= left_length;
+ Parent.Right = Left;
+ Left.Parent = Parent;
+ c1 = Left.Left;
+ Left.Right = this;
+
+ Parent = Left;
+ Left = c1;
+ Parent.Length += Length;
+ Length -= left_length;
if (c1 != null)
{
- c1.parent = this;
- parent.total_length -= c1.total_length;
- total_length += c1.total_length;
+ c1.Parent = this;
+ Parent.Length -= c1.Length;
+ Length += c1.Length;
}
- return parent;
+ return Parent;
}
private MInterval balance ()
if (diff > 0)
{
- new_diff = (i.total_length - i.LeftLength
- + i.left.RightLength - i.left.LeftLength);
+ new_diff = (i.Length - i.LeftLength
+ + i.Left.RightLength - i.Left.LeftLength);
if (Math.Abs (new_diff) >= diff)
break;
i = i.promote_left ();
- i.right.balance ();
+ i.Right.balance ();
}
else if (diff < 0)
{
- new_diff = (i.total_length - i.RightLength
- + i.right.LeftLength - i.right.RightLength);
+ new_diff = (i.Length - i.RightLength
+ + i.Right.LeftLength - i.Right.RightLength);
if (Math.Abs (new_diff) >= diff)
break;
i = i.promote_right ();
- i.left.balance ();
+ i.Left.balance ();
}
}
return i;
}
- public MInterval copy (int start, int end)
+ public MInterval Copy (int start, int end)
{
- MInterval this_copy, left_copy = null, right_copy = null;
+ MInterval copy, left_copy = null, right_copy = null;
update_from_to ();
- if (start < from)
+
+ if (start < From)
{
- if (end <= from)
- return left.copy (start, end);
- left_copy = left.copy (start, from);
+ if (end <= From)
+ return Left.Copy (start, end);
+ left_copy = Left.Copy (start, From);
}
- else if (end > to)
+ if (end > To)
{
- if (start >= to)
- return right.copy (start, end);
- right_copy = right.copy (to, end);
+ if (start >= To)
+ return Right.Copy (start, end);
+ right_copy = Right.Copy (To, end);
}
- this_copy = new MInterval (key, end - start, stack);
- this_copy.left = left_copy;
- this_copy.right = right_copy;
- return this_copy;
+ copy = new MInterval (Key, null, end - start, Stack);
+ remove_properties (MTextProperty.Flag.Sensitive);
+ if (left_copy != null)
+ {
+ copy.Left = left_copy;
+ left_copy.Parent = copy;
+ }
+ if (right_copy != null)
+ {
+ copy.Right = right_copy;
+ right_copy.Parent = copy;
+ }
+ return copy;
}
// this-. ==> this-.
// right
private MInterval divide_right (int pos)
{
- update_from_to ();
-
- MInterval interval = new MInterval (key, to - pos, stack);
+ MInterval interval = new MInterval (Key, mtext, To - pos, Stack);
- total_length -= to - pos;
- if (right != null)
+ M17N.DebugPrint ("divide-right({0}) at ", pos); DumpOne (false, true);
+ To = pos;
+ if (Right != null)
{
- right.parent = interval;
- interval.total_length += right.total_length;
+ interval.Right = Right;
+ Right.Parent = interval;
+ interval.Length += Right.Length;
}
- interval.parent = this;
- right = interval;
+ interval.Parent = this;
+ Right = interval;
return interval;
}
// left
private MInterval divide_left (int pos)
{
- update_from_to ();
-
- MInterval interval = new MInterval (key, to - pos, stack);
+ MInterval interval = new MInterval (Key, mtext, pos - From, Stack);
- total_length -= to - pos;
- if (left != null)
+ M17N.DebugPrint ("divide-left({0}) at ", pos); DumpOne (false, true);
+ From = pos;
+ if (Left != null)
{
- left.parent = interval;
- interval.total_length += left.total_length;
+ interval.Left = Left;
+ Left.Parent = interval;
+ interval.Length += Left.Length;
}
- interval.parent = this;
- left = interval;
+ interval.Parent = this;
+ Left = interval;
return interval;
}
- public void insert (int pos, MInterval interval)
+ private void remove_properties (MTextProperty.Flag flags)
{
- update_from_to ();
- if (pos < from)
+ for (MPlist p = Stack; ! p.IsEmpty;)
{
- LeftNode.insert (pos, interval);
- return;
+ MTextProperty prop = (MTextProperty) p.Val;
+
+ if ((prop.flags & flags) == flags)
+ p.Pop ();
+ else
+ p = p.Next;
}
- if (pos >= to)
+ }
+
+ private void inherit_front_properties (MPlist plist)
+ {
+ for (MInterval i = LeftMost; i != null; i = i.Next)
{
- RightNode.insert (pos, interval);
- return;
+ if (! Stack.IsEmpty)
+ break;
+ for (MPlist p = plist; ! p.IsEmpty; p = p.Next)
+ {
+ MTextProperty prop = (MTextProperty) p.Val;
+
+ if ((prop.flags & MTextProperty.Flag.RearSticky)
+ == MTextProperty.Flag.RearSticky)
+ i.Stack.Add (prop.key, prop);
+ }
}
- if (pos > from)
- {
- divide_right (pos).insert (pos, interval);
- return;
- }
+ }
- // POS == FROM
- if (left != null && LeftNode.stack.Count > 0)
+ private void inherit_rear_properties (MPlist plist)
+ {
+ for (MInterval i = RightMost; i != null; i = i.Prev)
{
- Stack<MTextProperty> s = new Stack<MTextProperty> ();
-
- foreach (MTextProperty p in LeftNode.stack)
- if (p.RearSticky)
- s.Push (p);
- if (s.Count > 0)
+ if (! Stack.IsEmpty)
+ break;
+ for (MPlist p = plist; ! p.IsEmpty; p = p.Next)
{
- for (MInterval i = interval.LeftMostNode;
- i != null && i.stack.Count == 0;
- i = i.LeftNode)
- foreach (MTextProperty p in s)
- i.stack.Push (p);
+ MTextProperty prop = (MTextProperty) p.Val;
+
+ if ((prop.flags & MTextProperty.Flag.FrontSticky)
+ == MTextProperty.Flag.FrontSticky)
+ i.Stack.Add (prop.key, prop);
}
}
- if (stack.Count > 0)
+ }
+
+ private MInterval delete_node_forward ()
+ {
+ if (Parent != null)
{
- Stack<MTextProperty> s = new Stack<MTextProperty> ();
+ int len = Length - RightLength;
- foreach (MTextProperty p in stack)
- if (p.FrontSticky)
- s.Push (p);
- if (s.Count > 0)
- {
- for (MInterval i = interval.RightMostNode;
- i != null && i.stack.Count == 0;
- i = i.RightNode)
- foreach (MTextProperty p in s)
- i.stack.Push (p);
- }
+ for (MInterval i = Parent; i != null; i = i.Parent)
+ i.Length -= len;
+ if (Parent.Left == this)
+ Parent.Left = Right;
+ else
+ Parent.Right = Right;
}
- // INTERVAL is ready to insert.
- //
- // .-this-. ==> .-this-.
- // left-. left-.
- // child interval
- // child
+ if (Right != null)
+ {
+ Right.Parent = Parent;
+ return Right.LeftMost;
+ }
+ return Parent;
+ }
- if (left != null)
+ private MInterval delete_node_backward ()
+ {
+ if (Parent != null)
{
- MInterval i = left.RightMostNode;
-
- i.left = interval;
- interval.parent = i;
- for (; i != null; i = i.parent)
- i.total_length += interval.total_length;
+ int len = Length - RightLength;
+
+ for (MInterval i = Parent; i != null; i = i.Parent)
+ i.Length -= len;
+ if (Parent.Left == this)
+ Parent.Left = Left;
+ else
+ Parent.Right = Left;
+ }
+
+ if (Left != null)
+ {
+ Left.Parent = Parent;
+ return Left.RightMost;
+ }
+ return Parent;
+ }
+
+ private void set_mtext (MText mt)
+ {
+ mtext = mt;
+ if (Left != null)
+ Left.set_mtext (mt);
+ if (Right != null)
+ Right.set_mtext (mt);
+ }
+
+ private MInterval graft (MInterval interval, bool forward, out int len)
+ {
+ MInterval i;
+
+ len = 0;
+ if (forward)
+ {
+ i = interval.LeftMost;
+ while (i != null)
+ {
+ if (! mergeable (i))
+ break;
+ len += i.Length - i.RightLength;
+ i = i.delete_node_forward ();
+ }
}
else
{
- left = interval;
+ i = interval.RightMost;
+ while (i != null)
+ {
+ if (! mergeable (i))
+ break;
+ len += i.Length - i.LeftLength;
+ i = i.delete_node_backward ();
+ }
+ }
- for (MInterval i = this; i != null; i = i.parent)
- i.total_length += interval.total_length;
+ Length += len;
+ To += len;
+ for (MInterval prev = this, ii = this.Parent; ii != null;
+ prev = ii, ii = ii.Parent)
+ {
+ ii.Length += len;
+ if (prev == ii.Left)
+ {
+ ii.From += len;
+ ii.To += len;;
+ }
}
+ if (i != null)
+ while (i.Parent != null) i = i.Parent;
+ return i;
}
- private void update_parent (MInterval i)
+ public void Insert (int pos, MInterval interval)
{
- if (parent == null)
- mtext.intervals.put (key, i);
- else
+ update_from_to ();
+ M17N.DebugPrint ("insert({0}) at {1} in ", interval.Length, pos);
+ DumpOne (false, false);
+
+ interval.set_mtext (mtext);
+
+ if (pos < From)
+ Prev.Insert (pos, interval);
+ else if (pos == From)
{
- int diff;
+ MInterval prev = Prev;
- if (parent.right == i)
+ if (prev != null)
{
- diff = parent.right.total_length - i.total_length;
- parent.right = i;
+ if (Left == null)
+ {
+ prev.Insert (pos, interval);
+ return;
+ }
+ prev.remove_properties
+ (MTextProperty.Flag.Sensitive|MTextProperty.Flag.RearSticky);
+ interval.inherit_front_properties (prev.Stack);
}
- else
+ remove_properties
+ (MTextProperty.Flag.Sensitive|MTextProperty.Flag.FrontSticky);
+ interval.inherit_rear_properties (Stack);
+
+ int len;
+ interval = graft (interval, false, out len);
+ if (interval != null && prev != null)
+ interval = prev.graft (interval, true, out len);
+ if (interval != null)
+ {
+ MInterval i;
+
+ if (Left != null)
+ {
+ // .-this-. ==> .-this-.
+ // left-. .-left-.
+ // child child-.
+ // interval
+ i = Left.RightMost;
+ i.Right = interval;
+ }
+ else
+ {
+ Left = interval;
+ i = this;
+ }
+ interval.Parent = i;
+ for (; i != null; i = i.Parent)
+ i.Length += interval.Length;
+ }
+ }
+ else if (pos < To)
+ {
+ remove_properties (MTextProperty.Flag.Sensitive);
+
+ int len;
+ interval = graft (interval, true, out len);
+ pos += len;
+ if (interval != null)
+ interval = graft (interval, false, out len);
+ if (interval != null)
+ {
+ divide_right (pos);
+ Right.Left = interval;
+ interval.Parent = Right;
+ for (MInterval i = Right; i != null; i = i.Parent)
+ i.Length += interval.Length;
+ }
+ }
+ else if (pos == To)
+ {
+ MInterval next = Next;
+
+ if (next != null)
{
- diff = parent.left.total_length - i.total_length;
- parent.left = i;
+ if (Right == null)
+ {
+ next.Insert (pos, interval);
+ return;
+ }
+ next.remove_properties
+ (MTextProperty.Flag.Sensitive|MTextProperty.Flag.FrontSticky);
+ interval.inherit_rear_properties (next.Stack);
+ }
+ remove_properties
+ (MTextProperty.Flag.Sensitive|MTextProperty.Flag.RearSticky);
+ interval.inherit_front_properties (Stack);
+
+ int len;
+ interval = graft (interval, true, out len);
+ if (interval != null && next != null)
+ interval = next.graft (interval, false, out len);
+ if (interval != null)
+ {
+ MInterval i;
+
+ if (Right != null)
+ {
+ // .-this-. ==> .-this-.
+ // .-right .-right
+ // child .-child
+ // interval
+
+ i = Right.LeftMost;
+ i.Left = interval;
+ }
+ else
+ {
+ Right = interval;
+ i = this;
+ }
+ interval.Parent = i;
+ for (; i != null; i = i.Parent)
+ i.Length += interval.Length;
}
- for (i = parent; i != null; i = i.parent)
- i.total_length += diff;
}
+ else // (pos > To)
+ Next.Insert (pos, interval);
+ M17N.DebugPrint (" done\n");
}
- public void delete (int start, int end)
+ private void vacate_node (MInterval interval)
+ {
+ vacate_node (interval, null);
+ }
+
+ private void vacate_node (MInterval interval, MInterval stop)
+ {
+ if (interval != null)
+ M17N.DebugPrint ("vacate #{0} to #{1}\n", ID, interval.ID);
+ else
+ M17N.DebugPrint ("vacate #{0} to null\n", ID);
+ if (interval != null)
+ interval.Parent = Parent;
+ if (Parent == null)
+ {
+ if (mtext != null)
+ mtext.intervals.Put (Key, interval);
+ }
+ else
+ {
+ if (this == Parent.Right)
+ Parent.Right = interval;
+ else
+ Parent.Left = interval;
+
+ int diff = Length;
+ if (interval != null)
+ diff -= interval.Length;
+ for (MInterval i = Parent; i != stop; i = i.Parent)
+ i.Length -= diff;
+ }
+ }
+
+ public void Delete (int start, int end)
{
update_from_to ();
- if (start < from)
+ M17N.DebugPrint ("delete({0} {1}) from ", start, end); DumpOne (false, true);
+ if (start < From)
{
- if (end <= from)
+ if (end <= From)
{
- left.delete (start, end);
+ Left.Delete (start, end);
return;
}
- left.delete (start, from);
- start = from;
+ Left.Delete (start, From);
+ To -= From - start;
+ end -= From - start;
+ From = start;
}
- else if (end > to)
+ if (end > To)
{
- if (start >= to)
+ if (start >= To)
{
- right.delete (start, end);
+ Right.Delete (start, end);
return;
}
- right.delete (to, end);
- end = to;
+ Right.Delete (To, end);
+ end = To;
}
- if (start == from && end == to)
+ if (start == From && end == To)
{
- if (left == null)
- update_parent (right);
- else if (right == null)
- update_parent (left);
+ if (Right == null)
+ {
+ vacate_node (Left);
+ }
else
{
- MInterval i;
+ if (Left != null)
+ {
+ MInterval i;
- for (i = right; i.left != null; i = i.left)
- i.total_length += left.total_length;
- i.total_length += left.total_length;
- i.left = left;
- update_parent (right);
+ for (i = Right; i.Left != null; i = i.Left)
+ i.Length += Left.Length;
+ i.Length += Left.Length;
+ i.Left = Left;
+ Left.Parent = i;
+ }
+ vacate_node (Right);
}
}
else
{
int len = end - start;
- for (MInterval i = this; i != null; i = i.parent)
- i.total_length -= len;
+ for (MInterval i = this; i != null; i = i.Parent)
+ i.Length -= len;
}
}
- public MTextProperty Push (int start, int end, MTextProperty prop)
+ public void Push (int start, int end, MTextProperty prop)
{
update_from_to ();
- if (start < from)
+ M17N.DebugPrint ("push({0} {1}) at ", start, end); DumpOne (false, true);
+ if (start < From)
{
- left.Push (start, end, prop);
- if (end <= from)
- return prop;
- start = from;
+ if (end <= From)
+ {
+ Left.Push (start, end, prop);
+ return;
+ }
+ Left.Push (start, From, prop);
+ start = From;
}
- else if (end > to)
+ if (end > To)
{
- right.Push (start, end, prop);
- if (start >= to)
- return prop;
- end = to;
+ if (start >= To)
+ {
+ Right.Push (start, end, prop);
+ return;
+ }
+ Right.Push (To, end, prop);
+ end = To;
}
- if (start > from)
- divide_left (from);
- if (end < to)
+ if (start > From)
+ divide_left (start);
+ if (end < To)
divide_right (end);
- stack.Push (prop);
- return prop;
+ Stack.Push (prop.key, prop);
+ }
+
+ private static void merge_nodes (MInterval head, MInterval tail)
+ {
+ M17N.DebugPrint ("merging "); head.DumpOne (true, false);
+ M17N.DebugPrint (" through "); tail.DumpOne (true, false);
+
+ int from = head.From;
+ int to = tail.To;
+ MInterval root;
+
+ for (root = head; root.To + root.RightLength < to;
+ root = root.Parent);
+
+ M17N.DebugPrint (" common root is "); root.DumpOne (false, true);
+
+ if (from < root.From)
+ {
+ MInterval prev = root.Prev;
+
+ while (true)
+ {
+ M17N.DebugPrint ("merging "); prev.DumpOne (false, true);
+ prev.vacate_node (prev.Left, root);
+ if (prev == head)
+ break;
+ if (prev.Left != null)
+ prev = prev.Left.RightMost;
+ else
+ prev = prev.Parent;
+ }
+ }
+ if (root.To < to)
+ {
+ MInterval next = root.Next;
+
+ while (true)
+ {
+ M17N.DebugPrint ("merging "); next.DumpOne (false, true);
+ next.vacate_node (next.Right, root);
+ if (next == tail)
+ break;
+ if (next.Right != null)
+ next = next.Right.LeftMost;
+ else
+ next = next.Parent;
+ }
+ }
+ }
+
+ public void MergeAfterChange (int start, int end)
+ {
+ update_from_to ();
+ if (start < From)
+ {
+ Prev.MergeAfterChange (start, end);
+ return;
+ }
+
+ MInterval head = this, tail = this, i;
+
+ if (start == From && start > 0)
+ {
+ i = Prev;
+ if (mergeable (i))
+ head = i;
+ }
+ while (tail.To < end)
+ {
+ i = tail.Next;
+ if (! tail.mergeable (i))
+ {
+ if (head != tail)
+ merge_nodes (head, tail);
+ head = i;
+ }
+ tail = i;
+ }
+ while (true)
+ {
+ i = tail.Next;
+ if (i == null || ! tail.mergeable (i))
+ break;
+ tail = i;
+ }
+ if (head != tail)
+ merge_nodes (head, tail);
+ }
+
+ public void Pop (int start, int end)
+ {
+ update_from_to ();
+ M17N.DebugPrint ("pop({0} {1}) at ", start, end); DumpOne (false, true);
+ if (start < From)
+ {
+ if (end <= From)
+ {
+ Left.Pop (start, end);
+ return;
+ }
+ Left.Pop (start, From);
+ start = From;
+ }
+ if (end > To)
+ {
+ if (start >= To)
+ {
+ Right.Pop (start, end);
+ return;
+ }
+ Right.Pop (To, end);
+ end = To;
+ }
+
+ if (! Stack.IsEmpty)
+ {
+ if (start > From)
+ divide_left (start);
+ if (end < To)
+ divide_right (end);
+ Stack.Pop ();
+ }
+ }
+
+ private void DumpOne (bool with_prop, bool newline)
+ {
+ DumpOne (with_prop, newline, false);
+ }
+
+ private void DumpOne (bool with_prop, bool newline, bool force)
+ {
+ if (force || M17N.debug)
+ {
+ Console.Write ("#{0}({1} {2} {3}", ID, Length, From, To);
+ if (with_prop)
+ foreach (MPlist p in Stack)
+ Console.Write (" " + p.Val);
+ Console.Write (")");
+ if (newline)
+ Console.WriteLine ();
+ if (Length <= 0)
+ throw new Exception ("Invalid interval length");
+ }
+ }
+
+ public void Dump () { Dump (false); }
+
+ public void Dump (bool force)
+ {
+ if (force || M17N.debug)
+ {
+ update_from_to ();
+
+ if (Left != null)
+ Left.Dump (force);
+ if (From > 0)
+ Console.Write (" ");
+ DumpOne (true, false, force);
+ if (Right != null)
+ Right.Dump (force);
+ }
+ }
+
+ private int Depth {
+ get { return (Parent == null ? 0 : Parent.Depth + 1); }
+ }
+
+ public void DumpNested (bool force)
+ {
+ DumpNested ("", force);
+ }
+
+ public void DumpNested (string indent, bool force)
+ {
+ if (force || M17N.debug)
+ {
+ int indent_type = (Parent == null ? 1
+ : Parent.Left == this ? 0 : 2);
+
+ update_from_to ();
+ if (Left != null)
+ {
+ if (indent_type <= 1)
+ Left.DumpNested (indent + " ", force);
+ else
+ Left.DumpNested (indent + "| ", force);
+ }
+ if (indent_type == 0)
+ Console.Write (indent + ".-");
+ else if (indent_type == 2)
+ Console.Write (indent + "`-");
+ DumpOne (true, true, true);
+ if (Right != null)
+ {
+ if (indent_type >= 1)
+ Right.DumpNested (indent + " ", force);
+ else
+ Right.DumpNested (indent + "| ", force);
+ }
+ }
}
}
projects / m17n / m17n-lib-cs.git / blobdiff