public void Restyle()
{
// Get the current text from the editor.
string text = null;
string filename = null;
RunOnWinFormsThread(() =>
{
if (ShouldCancel)
{
return;
}
filename = _owner.Filename;
text = _editor.Text;
});
if (ShouldCancel)
{
return;
}
// First, do a fast easy pass over the input to find its maximum width,
// so that we can keep the horizontal scrollbar up-to-date.
MaximumInfo maximumInfo = CalculateMaximumInfo(text, _configurator.TextEditorConfig.Indentation);
RunOnWinFormsThread(() =>
{
if (ShouldCancel)
{
return;
}
_owner.SetMaximumInfo(maximumInfo);
_owner.ClearLineMarks();
});
// Create a Smile Lexer to begin lexical analysis on it.
SmileLibInterop.Lexer lexer = new SmileLibInterop.Lexer(text, 0, text.Length, filename, 1, 1, true);
// Spin over the input, collect tokens in approximately ~64K chunks (or ~1024 tokens),
// and pass them to the LexicalStyler class to style.
int currentChunkSize = 0;
const int MaximumChunkSize = 64 * 1024;
const int TokenWeight = 8 * 8; // Approximate guess for how much memory a Token object uses.
List <Token> tokens = new List <Token>();
Token token;
while ((token = lexer.Next()).Kind != TokenKind.EOI)
{
tokens.Add(token);
currentChunkSize += token.Position.Length + TokenWeight;
if (currentChunkSize >= MaximumChunkSize)
{
if (ShouldCancel)
{
break;
}
RunOnWinFormsThread(() =>
{
if (ShouldCancel)
{
return;
}
LexicalStyler.StyleTokens(_editor, _owner, tokens);
});
tokens.Clear();
currentChunkSize = 0;
if (ShouldCancel)
{
break;
}
}
}
if (tokens.Any())
{
RunOnWinFormsThread(() =>
{
if (ShouldCancel)
{
return;
}
LexicalStyler.StyleTokens(_editor, _owner, tokens);
});
}
}
