/// <summary>
/// Visit a parse tree produced by the <c>identifierExpression</c>
/// labeled alternative in <see cref="AntlrConditionParser.expression"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitIdentifierExpression([NotNull] AntlrConditionParser.IdentifierExpressionContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by the <c>identifierExpression</c>
/// labeled alternative in <see cref="AntlrConditionParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitIdentifierExpression([NotNull] AntlrConditionParser.IdentifierExpressionContext context)
{
}
public override Result VisitIdentifierExpression(AntlrConditionParser.IdentifierExpressionContext context)
{
var identifier = context.IDENTIFIER().GetText();
var obj = _param;
foreach (var propName in identifier.Split('.'))
{
var prop = obj.GetType().GetRuntimeProperty(propName);
if (prop == null)
{
prop = obj.GetType().GetRuntimeProperties().FirstOrDefault(p => string.Equals(p.Name, propName, StringComparison.InvariantCultureIgnoreCase));
}
if (prop == null)
{
var customField = obj.GetType().GetProperty("CustomFields");
if (customField == null)
{
throw new Exception($"Property {identifier} not found");
}
var custom = (IDictionary <string, object>)customField.GetValue(obj);
if (!custom.ContainsKey(propName))
{
throw new Exception($"Property {identifier} not found");
}
obj = custom[propName];
}
else
{
obj = prop.GetValue(obj);
}
}
var result = new Result();
switch (obj)
{
case int i:
result.Decimal = i;
break;
case uint ui:
result.Decimal = ui;
break;
case short s:
result.Decimal = s;
break;
case ushort us:
result.Decimal = us;
break;
case byte b:
result.Decimal = b;
break;
case sbyte sb:
result.Decimal = sb;
break;
case long l:
result.Decimal = l;
break;
case ulong ul:
result.Decimal = ul;
break;
case float fl:
result.Decimal = (decimal?)fl;
break;
case double db:
result.Decimal = (decimal?)db;
break;
case bool bo:
result.Bool = bo;
break;
case string str:
result.String = str;
break;
default:
result.Object = obj;
break;
}
return(result);
}