/// <summary>
/// Writes the specified syntax definition.
/// </summary>
public void WriteDefinition(XshdSyntaxDefinition definition)
{
if (definition == null)
throw new ArgumentNullException("definition");
writer.WriteStartElement("SyntaxDefinition", Namespace);
if (definition.Name != null)
writer.WriteAttributeString("name", definition.Name);
if (definition.Extensions != null)
writer.WriteAttributeString("extensions", string.Join(";", definition.Extensions.ToArray()));
definition.AcceptElements(this);
writer.WriteEndElement();
}
static XshdSyntaxDefinition ParseDefinition(XmlReader reader)
{
Debug.Assert(reader.LocalName == "SyntaxDefinition");
XshdSyntaxDefinition def = new XshdSyntaxDefinition();
def.Name = reader.GetAttribute("name");
string extensions = reader.GetAttribute("extensions");
if (extensions != null)
def.Extensions.AddRange(extensions.Split(';'));
ParseElements(def.Elements, reader);
Debug.Assert(reader.NodeType == XmlNodeType.EndElement);
Debug.Assert(reader.LocalName == "SyntaxDefinition");
return def;
}
/// <summary>
/// Creates a highlighting definition from the XSHD file.
/// </summary>
public static IHighlightingDefinition Load(XshdSyntaxDefinition syntaxDefinition, IHighlightingDefinitionReferenceResolver resolver)
{
if (syntaxDefinition == null)
throw new ArgumentNullException("syntaxDefinition");
return new XmlHighlightingDefinition(syntaxDefinition, resolver);
}
XshdSyntaxDefinition ParseDefinition(XmlElement syntaxDefinition)
{
XshdSyntaxDefinition def = new XshdSyntaxDefinition();
def.Name = syntaxDefinition.GetAttributeOrNull("name");
if (syntaxDefinition.HasAttribute("extensions")) {
def.Extensions.AddRange(syntaxDefinition.GetAttribute("extensions").Split(';', '|'));
}
XshdRuleSet mainRuleSetElement = null;
foreach (XmlElement element in syntaxDefinition.GetElementsByTagName("RuleSet")) {
XshdRuleSet ruleSet = ImportRuleSet(element);
def.Elements.Add(ruleSet);
if (ruleSet.Name == null)
mainRuleSetElement = ruleSet;
if (syntaxDefinition["Digits"] != null) {
// create digit highlighting rule
const string optionalExponent = @"([eE][+-]?[0-9]+)?";
const string floatingPoint = @"\.[0-9]+";
ruleSet.Elements.Add(
new XshdRule {
ColorReference = GetColorReference(syntaxDefinition["Digits"]),
RegexType = XshdRegexType.IgnorePatternWhitespace,
Regex = @"\b0[xX][0-9a-fA-F]+"
+ @"|"
+ @"(\b\d+(" + floatingPoint + ")?"
+ @"|" + floatingPoint + ")"
+ optionalExponent
});
}
}
if (syntaxDefinition.HasAttribute("extends") && mainRuleSetElement != null) {
// convert 'extends="HTML"' to '<Import ruleSet="HTML/" />' in main rule set.
mainRuleSetElement.Elements.Add(
new XshdImport { RuleSetReference = new XshdReference<XshdRuleSet>(
syntaxDefinition.GetAttribute("extends"), string.Empty
) });
}
return def;
}
