public object VisitSpan(XshdSpan span)
{
span.BeginColorReference.AcceptVisitor(this);
span.SpanColorReference.AcceptVisitor(this);
span.EndColorReference.AcceptVisitor(this);
return(span.RuleSetReference.AcceptVisitor(this));
}
static XshdSpan ParseSpan(XmlReader reader)
{
XshdSpan span = new XshdSpan();
SetPosition(span, reader);
span.BeginRegex = reader.GetAttribute("begin");
span.EndRegex = reader.GetAttribute("end");
span.Multiline = reader.GetBoolAttribute("multiline") ?? false;
span.SpanColorReference = ParseColorReference(reader);
span.RuleSetReference = ParseRuleSetReference(reader);
if (!reader.IsEmptyElement)
{
reader.Read();
while (reader.NodeType != XmlNodeType.EndElement)
{
Debug.Assert(reader.NodeType == XmlNodeType.Element);
switch (reader.Name)
{
case "Begin":
if (span.BeginRegex != null)
{
throw Error(reader, "Duplicate Begin regex");
}
span.BeginColorReference = ParseColorReference(reader);
span.BeginRegex = reader.ReadElementString();
span.BeginRegexType = XshdRegexType.IgnorePatternWhitespace;
break;
case "End":
if (span.EndRegex != null)
{
throw Error(reader, "Duplicate End regex");
}
span.EndColorReference = ParseColorReference(reader);
span.EndRegex = reader.ReadElementString();
span.EndRegexType = XshdRegexType.IgnorePatternWhitespace;
break;
case "RuleSet":
if (span.RuleSetReference.ReferencedElement != null)
{
throw Error(reader, "Cannot specify both inline RuleSet and RuleSet reference");
}
span.RuleSetReference = new XshdReference <XshdRuleSet>(ParseRuleSet(reader));
reader.Read();
break;
default:
throw new NotSupportedException("Unknown element " + reader.Name);
}
}
}
return(span);
}
public object VisitSpan(XshdSpan span)
{
if (span.RuleSetReference.InlineElement != null)
{
return(span.RuleSetReference.AcceptVisitor(this));
}
XshdSyntaxDefinition definition = allSyntaxDefinitions.SingleOrDefault(def => def.Name == span.RuleSetReference.ReferencedDefinition);
if (definition != null && visitedDefinitons.Add(definition))
{
foundColors.AddRange(definition.Elements.OfType <XshdColor>());
}
return(null);
}
public object VisitSpan(XshdSpan span)
{
string endRegex = span.EndRegex;
if (string.IsNullOrEmpty(span.BeginRegex) && string.IsNullOrEmpty(span.EndRegex))
{
throw Error(span, "Span has no start/end regex.");
}
if (!span.Multiline)
{
if (endRegex == null)
{
endRegex = "$";
}
else if (span.EndRegexType == XshdRegexType.IgnorePatternWhitespace)
{
endRegex = "($|" + endRegex + "\n)";
}
else
{
endRegex = "($|" + endRegex + ")";
}
}
HighlightingColor wholeSpanColor = GetColor(span, span.SpanColorReference);
return(new HighlightingSpan
{
StartExpression = CreateRegex(span, span.BeginRegex, span.BeginRegexType),
EndExpression = CreateRegex(span, endRegex, span.EndRegexType),
RuleSet = GetRuleSet(span, span.RuleSetReference),
StartColor = GetColor(span, span.BeginColorReference),
SpanColor = wholeSpanColor,
EndColor = GetColor(span, span.EndColorReference),
SpanColorIncludesStart = true,
SpanColorIncludesEnd = true
});
}