internal static RuleExpression GetRuleSetAttributeArgument(this GrammarNavigator nav, string attributeName, bool required = true)
{
var attr = nav.GetAttributes().FirstOrDefault(a => a.Name == attributeName);
if (attr == null)
{
if (required)
{
throw new InvalidOperationException(string.Format("Attribute [{0}] not found on rule set [{1}]!", attributeName, nav.CurrPath));
}
else
{
return(null);
}
}
//if (attr.Arguments.Count != 1 || !(attr.Arguments.First() is RuleExpression.RuleUsage))
if (attr.Arguments.Count != 1)
{
throw new InvalidOperationException(string.Format("Attribute [{0}] arguments is invalid on rule set [{1}]!", attributeName, nav.CurrPath));
}
var expression = attr.Arguments.First();
return(expression);
}
// IndentedWriter _log = new IndentedWriter();
private AnalyzerGraphBuilder(string rootRuleSetName, RuleSet[] ruleSets)
{
_ruleSets = ruleSets;
_rootRuleSetName = rootRuleSetName;
_expressionsVisitor = new RuleExpressionLoggingVisitor(this);
_nav = new GrammarNavigator(ruleSets);
}
