object Process(ExpectedValueEnum expectedValueType)
{
object val = null;
AntlrInputStream input = new AntlrInputStream(paramExprContent);
ParamExprGrammarLexer lexer = new ParamExprGrammarLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
ParamExprGrammarParser parser = new ParamExprGrammarParser(tokens);
parser.RemoveErrorListeners();
ParamExprLogger.resetStream();
parser.AddErrorListener(new ParamExprErrorListener());
IParseTree tree = parser.param_expr();
ParseTreeWalker walker = new ParseTreeWalker();
ParamExprListener eval = new ParamExprListener(tokens);
eval.RevitElement = _element;
eval.RevitParameterName = _paramName;
try
{
walker.Walk(eval, tree);
if (eval.HasValue)
{
val = eval.Value;
UnitType = eval.UnitType;
}
}
catch
{
}
return(val);
}
/// <summary>
/// Check for a special parameter value containing the Paramater expression
/// </summary>
/// <param name="paramValue">the Parameter value</param>
/// <param name="element">the Element</param>
/// <param name="paramName">the Parameter Name</param>
/// <returns>the resolved Parameter Expression value or null if not resolved</returns>
public static ParamExprResolver CheckForParameterExpr(string paramValue, Element element, string paramName, ExpectedValueEnum expectedDataType, out object propertyValue)
{
propertyValue = null;
string paramValuetrim = paramValue.Trim();
if (IsParameterExpr(paramValue))
{
ParamExprResolver pResv = new ParamExprResolver(element, paramName, paramValuetrim);
switch (expectedDataType)
{
case ExpectedValueEnum.STRINGVALUE:
propertyValue = pResv.GetStringValue();
break;
case ExpectedValueEnum.DOUBLEVALUE:
propertyValue = pResv.GetDoubleValue();
break;
case ExpectedValueEnum.INTVALUE:
propertyValue = pResv.GetIntValue();
break;
default:
break;
}
return(pResv);
}
return(null);
}
