public bool ScanTokenAndProvideInfoAboutIt(TokenInfo tokenInfo, ref int state)
{
if (_lexer == null)
{
return(false);
}
ScanTokenInfo info = _lexer.GetToken((ScanState)state);
if (info == null)
{
return(false);
}
state = (int)info.State;
_lastColor = (TokenColor)info.Color;
_colorizeEnd = info.ColorizeEnd;
tokenInfo.Color = _lastColor;
tokenInfo.Type = (TokenType)info.Type;
tokenInfo.Trigger = (TokenTriggers)info.Triggers;
if (info.Token == null)
{
return(false);
}
tokenInfo.StartIndex = info.Token.Location.Column - 1;
tokenInfo.EndIndex = info.Token.Location.EndColumn - 2;
return(!info.IsEndOfLine);
}
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>
/// Implementation of<c>GetLineTokens</c>(). Don't use this method directly!
/// </summary>
IEnumerable <ScanTokenInfo> GetLineTokens(ScanLexer lex, ScanState scanState)
{
ScanTokenInfo info = lex.GetToken(scanState);
scanState = info.State;
while (!info.IsEndOfLine)
{
yield return(info);
info = lex.GetToken(scanState);
scanState = info.State;
}
}
