public XmlHighlightingDefinition(XshdSyntaxDefinition xshd, IHighlightingDefinitionReferenceResolver resolver)
        {
            this.Name = xshd.Name;
            // Create HighlightingRuleSet instances
            var rnev = new RegisterNamedElementsVisitor(this);

            xshd.AcceptElements(rnev);
            // Assign MainRuleSet so that references can be resolved
            foreach (XshdElement element in xshd.Elements)
            {
                XshdRuleSet xrs = element as XshdRuleSet;
                if (xrs != null && xrs.Name == null)
                {
                    if (MainRuleSet != null)
                    {
                        throw Error(element, "Duplicate main RuleSet. There must be only one nameless RuleSet!");
                    }
                    else
                    {
                        MainRuleSet = rnev.ruleSets[xrs];
                    }
                }
            }
            if (MainRuleSet == null)
            {
                throw new HighlightingDefinitionInvalidException("Could not find main RuleSet.");
            }
            // Translate elements within the rulesets (resolving references and processing imports)
            xshd.AcceptElements(new TranslateElementVisitor(this, rnev.ruleSets, resolver));

            foreach (var p in xshd.Elements.OfType <XshdProperty>())
            {
                propDict.Add(p.Name, p.Value);
            }
        }
		public XmlHighlightingDefinition(XshdSyntaxDefinition xshd, IHighlightingDefinitionReferenceResolver resolver)
		{
			this.Name = xshd.Name;
			// Create HighlightingRuleSet instances
			var rnev = new RegisterNamedElementsVisitor(this);
			xshd.AcceptElements(rnev);
			// Assign MainRuleSet so that references can be resolved
			foreach (XshdElement element in xshd.Elements) {
				XshdRuleSet xrs = element as XshdRuleSet;
				if (xrs != null && xrs.Name == null) {
					if (MainRuleSet != null)
						throw Error(element, "Duplicate main RuleSet. There must be only one nameless RuleSet!");
					else
						MainRuleSet = rnev.ruleSets[xrs];
				}
			}
			if (MainRuleSet == null)
				throw new HighlightingDefinitionInvalidException("Could not find main RuleSet.");
			// Translate elements within the rulesets (resolving references and processing imports)
			xshd.AcceptElements(new TranslateElementVisitor(this, rnev.ruleSets, resolver));
		}