protected virtual bool TryUncommentBlock(SnapshotSpan span, ITextEdit edit, BlockCommentFormat format, out SnapshotSpan result)
{
Contract.Requires <ArgumentNullException>(edit != null, "edit");
Contract.Requires <ArgumentNullException>(format != null, "format");
string blockStart = format.StartText;
string blockEnd = format.EndText;
int startLen = span.Start.GetContainingLine().Length;
int endLen = span.End.GetContainingLine().Length;
TrimSpan(ref span);
//sp. case no selection, try and uncomment the current line.
if (span.IsEmpty)
{
span = new SnapshotSpan(span.Start.GetContainingLine().Start + ScanToNonWhitespaceChar(span.Start.GetContainingLine()), span.End.GetContainingLine().End);
}
// Check that comment start and end blocks are possible.
if ((span.Start - span.Start.GetContainingLine().Start) + blockStart.Length <= startLen && (span.End - span.End.GetContainingLine().Start) - blockStart.Length >= 0)
{
string startText = span.Snapshot.GetText(span.Start.Position, blockStart.Length);
if (startText == blockStart)
{
SnapshotSpan linespan = span;
linespan = new SnapshotSpan(span.End - blockEnd.Length, span.End);
string endText = linespan.GetText();
if (endText == blockEnd)
{
//yes, block comment selected; remove it
edit.Delete(linespan);
edit.Delete(span.Start.Position, blockStart.Length);
result = span;
return(true);
}
}
}
result = default(SnapshotSpan);
return(false);
}
protected virtual bool TryUncommentBlock(SnapshotSpan span, ITextEdit edit, BlockCommentFormat format, out SnapshotSpan result)
{
Contract.Requires<ArgumentNullException>(edit != null, "edit");
Contract.Requires<ArgumentNullException>(format != null, "format");
string blockStart = format.StartText;
string blockEnd = format.EndText;
int startLen = span.Start.GetContainingLine().Length;
int endLen = span.End.GetContainingLine().Length;
TrimSpan(ref span);
//sp. case no selection, try and uncomment the current line.
if (span.IsEmpty)
{
span = new SnapshotSpan(span.Start.GetContainingLine().Start + ScanToNonWhitespaceChar(span.Start.GetContainingLine()), span.End.GetContainingLine().End);
}
// Check that comment start and end blocks are possible.
if ((span.Start - span.Start.GetContainingLine().Start) + blockStart.Length <= startLen && (span.End - span.End.GetContainingLine().Start) - blockStart.Length >= 0)
{
string startText = span.Snapshot.GetText(span.Start.Position, blockStart.Length);
if (startText == blockStart)
{
SnapshotSpan linespan = span;
linespan = new SnapshotSpan(span.End - blockEnd.Length, span.End);
string endText = linespan.GetText();
if (endText == blockEnd)
{
//yes, block comment selected; remove it
edit.Delete(linespan);
edit.Delete(span.Start.Position, blockStart.Length);
result = span;
return true;
}
}
}
result = default(SnapshotSpan);
return false;
}
protected virtual SnapshotSpan CommentBlock(SnapshotSpan span, ITextEdit edit, BlockCommentFormat format)
{
Contract.Requires<ArgumentNullException>(edit != null, "edit");
Contract.Requires<ArgumentNullException>(format != null, "format");
//sp. case no selection
if (span.IsEmpty)
{
span = new SnapshotSpan(span.Start.GetContainingLine().Start + ScanToNonWhitespaceChar(span.Start.GetContainingLine()), span.End.GetContainingLine().End);
}
// add start comment
edit.Insert(span.Start, format.StartText);
// add end comment
edit.Insert(span.End, format.EndText);
return span;
}
protected virtual SnapshotSpan CommentBlock(SnapshotSpan span, ITextEdit edit, BlockCommentFormat format)
{
Contract.Requires <ArgumentNullException>(edit != null, "edit");
Contract.Requires <ArgumentNullException>(format != null, "format");
//sp. case no selection
if (span.IsEmpty)
{
span = new SnapshotSpan(span.Start.GetContainingLine().Start + ScanToNonWhitespaceChar(span.Start.GetContainingLine()), span.End.GetContainingLine().End);
}
// add start comment
edit.Insert(span.Start, format.StartText);
// add end comment
edit.Insert(span.End, format.EndText);
return(span);
}
protected virtual SnapshotSpan CommentBlock(SnapshotSpan span, [NotNull] ITextEdit edit, [NotNull] BlockCommentFormat format)
{
Requires.NotNull(edit, nameof(edit));
Requires.NotNull(format, nameof(format));
//sp. case no selection
if (span.IsEmpty)
{
span = new SnapshotSpan(span.Start.GetContainingLine().Start + ScanToNonWhitespaceChar(span.Start.GetContainingLine()), span.End.GetContainingLine().End);
}
// add start comment
edit.Insert(span.Start, format.StartText);
// add end comment
edit.Insert(span.End, format.EndText);
return(span);
}