public BracketFinder(NemerleSource source, int startLine,
int startCol, NemerleScanner scanner, IVsTextColorState colorState)
{
#region Init fields
Scanner = scanner;
Source = source;
StartLine = startLine;
Lex = scanner.GetNewLexer();
Lex.SetFileName(source.GetFilePath());
ColorState = colorState;
_lineCount = source.GetLineCount();
var line = startLine - 1;
_buffer = new string[1] {
source.GetText(line, 0, line, source.GetLineLength(line))
};
_startBufferLine = line;
#endregion
#region 2. Determine that it is a paired token. 3. Determine paired token.
// Get tokens of line under text carret into dynamic array.
List <ScanTokenInfo> lineToks = GetLineTokens(startLine, true);
// Find index of token which located under text carret.
int index = FindIndex(lineToks, x => x.Token.Location.Contains(startLine, startCol));
if (index < 0)
{
return;
}
// If index is corret get corresponding token.
ScanTokenInfo startBraceInfo = lineToks[index];
// Remember it, if token have paired token.
if (IsPairedToken(startBraceInfo.Token))
{
StartBraceInfo = startBraceInfo;
}
else
{
// otherwise try get right-hand token...
startBraceInfo = RightHand(lineToks, index);
// Remember it, if token have paired token.
if (IsPairedToken(startBraceInfo.Token))
{
StartBraceInfo = startBraceInfo;
}
}
#endregion
}
/// <summary>
/// Get tokens of specified line.
/// </summary>
/// <param name="line">Line number which tokens it is necessary retrieve</param>
/// <param name="isForward">Direction of iteration (true is forward)</param>
/// <returns>Token list</returns>
List <ScanTokenInfo> GetLineTokens(int nline, bool isForward)
{
int line = nline - 1;
ScanState scanState = GetLineState(nline);
string lineText;
int index = line - _startBufferLine;
// читаем буферами по BufferLen стрк, чтобы ускорить работу
if (index < 0 || index >= _buffer.Length)
{
int start, end;
if (isForward)
{
end = Math.Min(_lineCount - 1, line + BufferLen);
start = line;
}
else
{
start = Math.Max(0, line - BufferLen);
end = line;
}
var str = Source.GetText(start, 0, end, Source.GetLineLength(end));
_buffer = str.Split(new string[] { "\r\n", "\n", "\r" }, StringSplitOptions.None);
_startBufferLine = start;
index = line - _startBufferLine;
}
lineText = _buffer[index];
Scanner.SetSource(lineText, 0);
Lex.SetLine(nline, lineText, 0, null, null);
List <ScanTokenInfo> lst = new List <ScanTokenInfo>();
foreach (ScanTokenInfo var in GetLineTokens(Lex, scanState))
{
lst.Add(var);
}
if (!isForward)
{
lst.Reverse();
}
return(lst);
}
internal void ShowInfo(NemerleSource source)
{
if (!IsAutoUpdate)
return;
Action action = () =>
{
_checkCountLabel.Text = (++_checkCount).ToString();
_items.Clear();
ProjectInfo projectInfo = source.ProjectInfo;
if (projectInfo == null || !projectInfo.Engine.IsProjectAvailable)
return;
switch (_displayType.SelectedIndex)
{
case 0: // Tokens
string code = source.GetText();
LexerBase lex = new LexerString((ManagerClass)projectInfo.Engine, code,
new Location(source.FileIndex, 1, 1));
//lex.BeginParseFile();
lex.Keywords = lex.Manager.CoreEnv.Keywords;
AstUtils.FillList(lex, _items);
break;
case 1: // AST
//var ns = projectInfo.Engine.Project.CompileUnits
// .GetTopNamespace(source.FileIndex);
//AstUtils.FillList(ns, _items);
break;
}
_grid.RowCount = _items.Count;
_grid.Invalidate();
_grid.Update();
};
_checkCountLabel.BeginInvoke(action);
}