/// <summary>
/// Return a fragment of a text line, safely ensuring that "start" and "end" position are within the boundaries
/// of the line. |options| can be used to customize the behavior.
/// </summary>
public static TextLineFragment GetFragment(
this ITextSnapshotLine line,
int start,
int end,
TextLineFragment.Options options) {
return TextLineFragment.Create(line, start, end, options);
}
/// <summary>
/// Return a fragment of a text line, safely ensuring that "start" and "end" position are within the boundaries
/// of the line. |options| can be used to customize the behavior.
/// </summary>
public static TextLineFragment GetFragment(
this ITextSnapshotLine line,
int start,
int end,
TextLineFragment.Options options)
{
return(TextLineFragment.Create(line, start, end, options));
}
private string GetMarker(ITextSnapshotLine line, TextLineFragment fragment, SnapshotPoint point) {
string[] markers = {
"for(",
};
return markers
.Where(marker => fragment.GetText(point - line.Start, marker.Length) == marker)
.FirstOrDefault();
}
private string GetMarker(ITextSnapshotLine line, TextLineFragment fragment, SnapshotPoint point) {
string[] markers = {
"else",
"else if",
};
var match = markers
.Where(marker => fragment.GetText(point - line.Start, marker.Length) == marker)
.FirstOrDefault();
if (match != null) {
// If last character of line is not "{", we are good
var end = line.GetFragment(line.End.Position - 1, line.End.Position, TextLineFragment.Options.Default);
if (end.GetText() != "{")
return null;
}
return match;
}
/// <summary>
/// Return a fragment of a text line, safely ensuring that "start" and "end" position are within the boundaries
/// of the line. |options| can be used to customize the behavior.
/// </summary>
public static TextLineFragment Create(ITextSnapshotLine line, int start, int end, TextLineFragment.Options options) {
if (start < line.Start.Position) {
start = line.Start.Position;
}
if ((options & TextLineFragment.Options.IncludeLineBreak) == TextLineFragment.Options.IncludeLineBreak) {
if (end > line.EndIncludingLineBreak.Position)
end = line.EndIncludingLineBreak.Position;
} else {
if (end > line.End.Position)
end = line.End.Position;
}
if (start > end) {
return new TextLineFragment(line, start, 0, options);
}
var count = end - start;
return new TextLineFragment(line, start, count, options);
}