public override void Init(Irony.Parsing.ParsingContext context, Irony.Parsing.ParseTreeNode treeNode)
{
base.Init(context, treeNode);
if (treeNode.ChildNodes.Count == 1)
{
Value = new IntegerAstNode()
{
Value = 1
};
PeriodicType = PeriodicTypeAst.Day;
}
else
{
Value = AddChild("value", treeNode.FirstChild) as ExpressionAstNode;
string periodType = treeNode.ChildNodes[1].FindTokenAndGetText().ToLower();
switch (periodType)
{
case "month":
case "months": PeriodicType = PeriodicTypeAst.Month; break;
case "days":
case "day": PeriodicType = PeriodicTypeAst.Day; break;
default:
throw new ArgumentException("Unregconized period type:" + periodType);
}
}
}
/// <summary>
/// Convert periodic type in ast node to the type in model
/// </summary>
/// <param name="periodicTypeAst"></param>
/// <returns></returns>
private PeriodicType PeriodicTypeConvert(PeriodicTypeAst periodicTypeAst)
{
switch (periodicTypeAst)
{
case PeriodicTypeAst.Day:
return PeriodicType.Day;
case PeriodicTypeAst.Week:
return PeriodicType.Week;
case PeriodicTypeAst.Month:
return PeriodicType.Month;
default:
throw new ArgumentException("Unexpected periodic type from AST node: " + periodicTypeAst.ToString());
}
}