/// <summary>
/// Override this message to change the parsing of spans.
/// </summary>
/// <param name="spanBegin">The span begin.</param>
/// <param name="document">The document.</param>
/// <param name="words">The words.</param>
/// <param name="span">The span.</param>
/// <param name="lineOffset">The line offset.</param>
/// <returns>
/// <c>true</c> if this method has parsed the span (customized parsing).
/// <c>false</c> to parse the span as normal.
/// </returns>
protected virtual bool OverrideSpan(string spanBegin, IDocument document, List<TextWord> words, Span span, ref int lineOffset)
{
return false;
}
/// <summary>
/// Gets the rule set for a span.
/// </summary>
/// <param name="span">The span.</param>
/// <returns>The rule set.</returns>
public HighlightRuleSet GetRuleSet(Span span)
{
if (span == null)
{
return _defaultRuleSet;
}
else
{
if (span.RuleSet != null)
{
if (span.RuleSet.Reference != null)
return span.RuleSet.Highlighter.GetRuleSet(null);
else
return span.RuleSet;
}
else
{
return null;
}
}
}
void UpdateSpanStateVariables()
{
inSpan = (currentSpanStack != null && !currentSpanStack.IsEmpty);
activeSpan = inSpan ? currentSpanStack.Peek() : null;
activeRuleSet = GetRuleSet(activeSpan);
}
void UpdateSpanCountryVariables()
{
_inSpan = (_currentSpanStack != null && !_currentSpanStack.IsEmpty);
_activeSpan = _inSpan ? _currentSpanStack.Peek() : null;
_activeRuleSet = GetRuleSet(_activeSpan);
}
/// <summary>
/// Initializes a new instance of the <see cref="TextWord"/> class.
/// </summary>
/// <param name="document">The document.</param>
/// <param name="span">The <see cref="Span"/>.</param>
/// <param name="line">The line.</param>
/// <param name="offset">The offset.</param>
/// <param name="length">The length.</param>
/// <param name="color">The color.</param>
/// <param name="hasDefaultColor">if set to <c>true</c> [has default color].</param>
public TextWord(IDocument document, Span span, LineSegment line, int offset, int length, HighlightColor color, bool hasDefaultColor)
{
Debug.Assert(document != null);
Debug.Assert(line != null);
Debug.Assert(color != null);
this.document = document;
_span = span;
this.line = line;
this.offset = offset;
this.length = length;
this.color = color;
this.hasDefaultColor = hasDefaultColor;
}