public ITextSnapshot Apply()
{
var text = new StringBuilder(_snapshot.GetText());
var changes = new List <MockTextChange>();
// Apply changes
foreach (var edit in _edits.OrderByDescending(e => e.Position).ThenByDescending(e => e, EditTypeComparer.Instance))
{
MockTextChange change;
if (edit is ReplacementEdit replace)
{
text.Remove(replace.Position, replace.Length);
text.Insert(replace.Position, replace.Text);
change = new MockTextChange(
new SnapshotSpan(_snapshot, replace.Position, replace.Length),
replace.Position,
replace.Text
);
}
else if (edit is InsertionEdit insert)
{
text.Insert(insert.Position, insert.Text);
change = new MockTextChange(
new SnapshotSpan(_snapshot, insert.Position, 0),
insert.Position,
insert.Text
);
}
else
{
DeletionEdit delete = (DeletionEdit)edit;
text.Remove(delete.Position, delete.Length);
change = new MockTextChange(
new SnapshotSpan(_snapshot, delete.Position, delete.Length),
delete.Position,
string.Empty
);
}
changes.Add(change);
}
changes.Reverse();
MockTextSnapshot previous = _snapshot;
MockTextSnapshot res = ((MockTextBuffer)_snapshot.TextBuffer)._snapshot = new MockTextSnapshot(
(MockTextBuffer)_snapshot.TextBuffer,
text.ToString(),
_snapshot,
changes.ToArray()
);
_applied = true;
((MockTextBuffer)_snapshot.TextBuffer).EditApplied(previous);
return(res);
}
public ITextSnapshot Apply()
{
StringBuilder text = new StringBuilder(_snapshot.GetText());
var deletes = new NormalizedSnapshotSpanCollection(
_snapshot,
_edits.OfType <DeletionEdit>()
.Select(edit => new Span(edit.Position, edit.Length))
);
// apply the deletes
for (int i = deletes.Count - 1; i >= 0; i--)
{
text.Remove(deletes[i].Start, deletes[i].Length);
}
// now apply the inserts
int curDelete = 0, adjust = 0;
int deletesBorrowed = 0;
foreach (var insert in _edits.OfType <InsertionEdit>())
{
while (curDelete < deletes.Count && deletes[curDelete].Start < insert.Position)
{
if (deletes[curDelete].Start + deletes[curDelete].Length < insert.Position)
{
adjust -= deletes[curDelete].Length - deletesBorrowed;
deletesBorrowed = 0;
curDelete++;
}
else
{
int deletesUsed = insert.Position - deletes[curDelete].Start;
adjust -= deletesUsed;
deletesBorrowed += deletesUsed;
break;
}
}
text.Insert(insert.Position + adjust, insert.Text);
adjust += insert.Text.Length;
}
List <MockTextChange> changes = new List <MockTextChange>();
adjust = 0;
foreach (var curEdit in _edits.OrderBy(e => e.Position))
{
InsertionEdit insert = curEdit as InsertionEdit;
if (insert != null)
{
changes.Add(
new MockTextChange(
new SnapshotSpan(_snapshot, insert.Position, 0),
insert.Position + adjust,
insert.Text
)
);
adjust += insert.Text.Length;
}
else
{
DeletionEdit delete = (DeletionEdit)curEdit;
changes.Add(
new MockTextChange(
new SnapshotSpan(_snapshot, delete.Position, delete.Length),
delete.Position + adjust,
""
)
);
adjust -= delete.Length;
}
}
var previous = _snapshot;
var res = ((MockTextBuffer)_snapshot.TextBuffer)._snapshot = new MockTextSnapshot(
(MockTextBuffer)_snapshot.TextBuffer,
text.ToString(),
_snapshot,
changes.ToArray()
);
_applied = true;
((MockTextBuffer)_snapshot.TextBuffer).EditApplied(previous);
return(res);
}
public ITextSnapshot Apply()
{
// this works for non-overlapping edits...
StringBuilder text = new StringBuilder(_snapshot.GetText());
List <MockTextChange> changes = new List <MockTextChange>();
for (int i = 0; i < _edits.Count; i++)
{
var curEdit = _edits[i];
int adjust = 0;
for (int j = 0; j < i; j++)
{
var compEdit = _edits[j];
DeletionEdit del = compEdit as DeletionEdit;
if (del != null)
{
if ((compEdit.Position) < curEdit.Position)
{
adjust -= del.Length;
}
}
else
{
if ((compEdit.Position) <= curEdit.Position)
{
adjust += ((InsertionEdit)compEdit).Text.Length;
}
}
}
InsertionEdit insert = curEdit as InsertionEdit;
if (insert != null)
{
changes.Add(
new MockTextChange(
new SnapshotSpan(
_snapshot,
insert.Position,
0
),
insert.Position + adjust,
insert.Text
)
);
text.Insert(insert.Position + adjust, insert.Text);
}
else
{
DeletionEdit delete = curEdit as DeletionEdit;
changes.Add(
new MockTextChange(
new SnapshotSpan(
_snapshot,
delete.Position,
delete.Length
),
delete.Position + adjust,
""
)
);
text.Remove(delete.Position + adjust, delete.Length);
}
}
var res = ((MockTextBuffer)_snapshot.TextBuffer)._snapshot = new MockTextSnapshot(
(MockTextBuffer)_snapshot.TextBuffer,
text.ToString(),
_snapshot,
changes.ToArray()
);
_applied = true;
((MockTextBuffer)_snapshot.TextBuffer).EditApplied();
return(res);
}
public ITextSnapshot Apply()
{
StringBuilder text = new StringBuilder(_snapshot.GetText());
var deletes = new NormalizedSnapshotSpanCollection(
_snapshot,
_edits.Where(edit => edit is DeletionEdit)
.Select(edit =>
new Span(
((DeletionEdit)edit).Position,
((DeletionEdit)edit).Length
)
)
);
// apply the deletes
for (int i = deletes.Count - 1; i >= 0; i--)
{
text.Remove(deletes[i].Start, deletes[i].Length);
}
// now apply the inserts
int curDelete = 0, adjust = 0;
foreach (InsertionEdit insert in _edits.Where(edit => edit is InsertionEdit))
{
while (curDelete < deletes.Count && deletes[curDelete].Start < insert.Position)
{
adjust -= deletes[curDelete++].Length;
}
text.Insert(insert.Position + adjust, insert.Text);
adjust += insert.Text.Length;
}
List <MockTextChange> changes = new List <MockTextChange>();
for (int i = 0; i < _edits.Count; i++)
{
var curEdit = _edits[i];
InsertionEdit insert = curEdit as InsertionEdit;
if (insert != null)
{
changes.Add(
new MockTextChange(
new SnapshotSpan(
_snapshot,
insert.Position,
0
),
insert.Position + adjust,
insert.Text
)
);
}
else
{
DeletionEdit delete = curEdit as DeletionEdit;
changes.Add(
new MockTextChange(
new SnapshotSpan(
_snapshot,
delete.Position,
delete.Length
),
delete.Position + adjust,
""
)
);
}
}
var res = ((MockTextBuffer)_snapshot.TextBuffer)._snapshot = new MockTextSnapshot(
(MockTextBuffer)_snapshot.TextBuffer,
text.ToString(),
_snapshot,
changes.ToArray()
);
_applied = true;
((MockTextBuffer)_snapshot.TextBuffer).EditApplied();
return(res);
}
