public static List <IToken> SyntaxHighlight(FastColoredTextBox textbox)
{
List <IToken> tokens;
// TODO: This is slow on a large DAX expression and may cause flickering...
//textbox.SuspendDrawing(); // Doesn't work as we might be on a different thread
try
{
var lexer = new DAXLexer(new DAXCharStream(textbox.Text, Preferences.Current.UseSemicolonsAsSeparators));
lexer.RemoveErrorListeners();
tokens = lexer.GetAllTokens().ToList();
}
catch
{
textbox.ClearStyle(StyleIndex.All);
return(new List <IToken>());
}
textbox.BeginInvoke((MethodInvoker)(() =>
{
textbox.SuspendDrawing();
textbox.ClearStyle(StyleIndex.All);
foreach (var tok in tokens)
{
if (tok.Type == DAXLexer.Eof)
{
break;
}
var range = textbox.GetRange(tok.StartIndex, tok.StopIndex + 1);
if (tok.Channel == DAXLexer.KEYWORD_CHANNEL)
{
range.SetStyle(KeywordStyle);
}
else if (tok.Channel == DAXLexer.COMMENTS_CHANNEL)
{
range.SetStyle(CommentStyle);
}
else
{
switch (tok.Type)
{
case DAXLexer.INTEGER_LITERAL:
case DAXLexer.REAL_LITERAL:
case DAXLexer.STRING_LITERAL:
range.SetStyle(LiteralStyle); break;
case DAXLexer.OPEN_PARENS:
case DAXLexer.CLOSE_PARENS:
range.SetStyle(ParensStyle); break;
default:
range.SetStyle(PlainStyle); break;
}
}
}
textbox.ResumeDrawing();
}));
return(tokens);
}
private void ClearHighlighting()
{
var selectedRange = FastColoredTextBox.Selection.Clone();
FastColoredTextBox.ClearStyle(StyleIndex.All); //remove all old highlighting
FastColoredTextBox.Selection = selectedRange;
FastColoredTextBox.Invalidate();
}
public static void SyntaxHighlight(FastColoredTextBox textbox)
{
try
{
var lexer = new DAXLexer(new AntlrInputStream(textbox.Text));
lexer.RemoveErrorListeners();
textbox.ClearStyle(StyleIndex.All);
var tok = lexer.NextToken();
while (tok != null && tok.Type != DAXLexer.Eof)
{
var range = textbox.GetRange(tok.StartIndex, tok.StopIndex + 1);
if (tok.Channel == DAXLexer.KEYWORD_CHANNEL)
{
range.SetStyle(KeywordStyle);
}
else if (tok.Channel == DAXLexer.COMMENTS_CHANNEL)
{
range.SetStyle(CommentStyle);
}
else
{
switch (tok.Type)
{
case DAXLexer.INTEGER_LITERAL:
case DAXLexer.REAL_LITERAL:
case DAXLexer.STRING_LITERAL:
range.SetStyle(LiteralStyle); break;
case DAXLexer.OPEN_PARENS:
case DAXLexer.CLOSE_PARENS:
range.SetStyle(ParensStyle); break;
default:
range.SetStyle(PlainStyle); break;
}
}
tok = lexer.NextToken();
}
}
catch
{
// Ignore all errors encountered while doing async syntax highlighting
}
}
private void HilightTab()
{
if (tabFiles.TabPages.Count == 0)
{
return;
}
FastColoredTextBox fctb = (FastColoredTextBox)tabFiles.SelectedTab.Controls[0];
fctb.ClearStyle(StyleIndex.All);
foreach (DataRow row in Hilighters.Rows)
{
string Search = row[HilightSearch.Attributes.Search.ToString()].ToString();
bool isRegex = (bool)row[HilightSearch.Attributes.isRegex.ToString()];
Color foreColor = (Color)row[HilightSearch.Attributes.foreColor.ToString()];
Color backColor = (Color)row[HilightSearch.Attributes.backColor.ToString()];
TextStyle a = new TextStyle(new SolidBrush(foreColor), new SolidBrush(backColor), FontStyle.Regular);
fctb.Range.SetStyle(a, Search);
fctb.Range.SetFoldingMarkers("{", "}");
}
}
