List <TextWord> ParseLine(IDocument document) { List <TextWord> words = new List <TextWord>(); HighlightColor markNext = null; currentOffset = 0; currentLength = 0; UpdateSpanStateVariables(); int currentLineLength = currentLine.Length; int currentLineOffset = currentLine.Offset; for (int i = 0; i < currentLineLength; ++i) { char ch = document.GetCharAt(currentLineOffset + i); switch (ch) { case '\n': case '\r': PushCurWord(document, ref markNext, words); ++currentOffset; continue; case ' ': PushCurWord(document, ref markNext, words); if (activeSpan != null && activeSpan.Color.HasBackground) { words.Add(new TextWord.SpaceTextWord(activeSpan.Color)); } else { words.Add(TextWord.Space); } ++currentOffset; continue; case '\t': PushCurWord(document, ref markNext, words); if (activeSpan != null && activeSpan.Color.HasBackground) { words.Add(new TextWord.TabTextWord(activeSpan.Color)); } else { words.Add(TextWord.Tab); } ++currentOffset; continue; } // handle escape characters char escapeCharacter = '\0'; if (activeSpan != null && activeSpan.EscapeCharacter != '\0') { escapeCharacter = activeSpan.EscapeCharacter; } else if (activeRuleSet != null) { escapeCharacter = activeRuleSet.EscapeCharacter; } if (escapeCharacter != '\0' && escapeCharacter == ch) { // we found the escape character if (activeSpan != null && activeSpan.End != null && activeSpan.End.Length == 1 && escapeCharacter == activeSpan.End[0]) { // the escape character is a end-doubling escape character // it may count as escape only when the next character is the escape, too if (i + 1 < currentLineLength) { if (document.GetCharAt(currentLineOffset + i + 1) == escapeCharacter) { currentLength += 2; PushCurWord(document, ref markNext, words); ++i; continue; } } } else { // this is a normal \-style escape ++currentLength; if (i + 1 < currentLineLength) { ++currentLength; } PushCurWord(document, ref markNext, words); ++i; continue; } } // highlight digits if (!inSpan && (Char.IsDigit(ch) || (ch == '.' && i + 1 < currentLineLength && Char.IsDigit(document.GetCharAt(currentLineOffset + i + 1)))) && currentLength == 0) { bool ishex = false; bool isfloatingpoint = false; if (ch == '0' && i + 1 < currentLineLength && Char.ToUpper(document.GetCharAt(currentLineOffset + i + 1)) == 'X') // hex digits { const string hex = "0123456789ABCDEF"; ++currentLength; ++i; // skip 'x' ++currentLength; ishex = true; while (i + 1 < currentLineLength && hex.IndexOf(Char.ToUpper(document.GetCharAt(currentLineOffset + i + 1))) != -1) { ++i; ++currentLength; } } else { ++currentLength; while (i + 1 < currentLineLength && Char.IsDigit(document.GetCharAt(currentLineOffset + i + 1))) { ++i; ++currentLength; } } if (!ishex && i + 1 < currentLineLength && document.GetCharAt(currentLineOffset + i + 1) == '.') { isfloatingpoint = true; ++i; ++currentLength; while (i + 1 < currentLineLength && Char.IsDigit(document.GetCharAt(currentLineOffset + i + 1))) { ++i; ++currentLength; } } if (i + 1 < currentLineLength && Char.ToUpper(document.GetCharAt(currentLineOffset + i + 1)) == 'E') { isfloatingpoint = true; ++i; ++currentLength; if (i + 1 < currentLineLength && (document.GetCharAt(currentLineOffset + i + 1) == '+' || document.GetCharAt(currentLine.Offset + i + 1) == '-')) { ++i; ++currentLength; } while (i + 1 < currentLine.Length && Char.IsDigit(document.GetCharAt(currentLineOffset + i + 1))) { ++i; ++currentLength; } } if (i + 1 < currentLine.Length) { char nextch = Char.ToUpper(document.GetCharAt(currentLineOffset + i + 1)); if (nextch == 'F' || nextch == 'M' || nextch == 'D') { isfloatingpoint = true; ++i; ++currentLength; } } if (!isfloatingpoint) { bool isunsigned = false; if (i + 1 < currentLineLength && Char.ToUpper(document.GetCharAt(currentLineOffset + i + 1)) == 'U') { ++i; ++currentLength; isunsigned = true; } if (i + 1 < currentLineLength && Char.ToUpper(document.GetCharAt(currentLineOffset + i + 1)) == 'L') { ++i; ++currentLength; if (!isunsigned && i + 1 < currentLineLength && Char.ToUpper(document.GetCharAt(currentLineOffset + i + 1)) == 'U') { ++i; ++currentLength; } } } words.Add(new TextWord(document, currentLine, currentOffset, currentLength, DigitColor, false)); currentOffset += currentLength; currentLength = 0; continue; } // Check for SPAN ENDs if (inSpan) { if (activeSpan.End != null && activeSpan.End.Length > 0) { if (MatchExpr(currentLine, activeSpan.End, i, document, activeSpan.IgnoreCase)) { PushCurWord(document, ref markNext, words); string regex = GetRegString(currentLine, activeSpan.End, i, document); currentLength += regex.Length; words.Add(new TextWord(document, currentLine, currentOffset, currentLength, activeSpan.EndColor, false)); currentOffset += currentLength; currentLength = 0; i += regex.Length - 1; currentSpanStack.Pop(); UpdateSpanStateVariables(); continue; } } } // check for SPAN BEGIN if (activeRuleSet != null) { Span mySpan = null; foreach (Span span in activeRuleSet.Spans) { if (span.IsBeginSingleWord && currentLength != 0) { continue; } if (span.IsBeginStartOfLine.HasValue && span.IsBeginStartOfLine.Value != (currentLength == 0 && words.TrueForAll( delegate(TextWord textWord) { return(textWord.Type != TextWordType.Word); }))) { continue; } if (!MatchExpr(currentLine, span.Begin, i, document, activeRuleSet.IgnoreCase)) { continue; } mySpan = span; break; } if (mySpan != null) { PushCurWord(document, ref markNext, words); string regex = GetRegString(currentLine, mySpan.Begin, i, document); if (!OverrideSpan(regex, document, words, mySpan, ref i)) { currentLength += regex.Length; words.Add(new TextWord(document, currentLine, currentOffset, currentLength, mySpan.BeginColor, false)); currentOffset += currentLength; currentLength = 0; i += regex.Length - 1; if (currentSpanStack == null) { currentSpanStack = new SpanStack(); } currentSpanStack.Push(mySpan); mySpan.IgnoreCase = activeRuleSet.IgnoreCase; UpdateSpanStateVariables(); } continue; } } // check if the char is a delimiter if (activeRuleSet != null && (int)ch < 256 && activeRuleSet.Delimiters[(int)ch]) { PushCurWord(document, ref markNext, words); if (currentOffset + currentLength + 1 < currentLine.Length) { ++currentLength; PushCurWord(document, ref markNext, words); continue; } } ++currentLength; } PushCurWord(document, ref markNext, words); OnParsedLine(document, currentLine, words); return(words); }