public static bool FieldIsElementsPeer(Field f)
{
if (f == null) return false;
return f.GetAttribute(SystemTypes.ElementsPeerAttribute) != null;
}
public static bool FieldIsAdditive(Field field) {
if (field == null) return false;
AttributeNode attr = field.GetAttribute(SystemTypes.AdditiveAttribute);
if (attr == null) return false;
ExpressionList exprs = attr.Expressions;
if (exprs == null || exprs.Count != 1) return true;
Literal lit = exprs[0] as Literal;
if (lit != null && (lit.Value is bool)) return (bool)lit.Value;
else return false;
}
public override Field VisitField(Field field) {
Field retVal = base.VisitField(field);
AttributeNode attrNode = field.GetAttribute(SystemTypes.AdditiveAttribute);
bool isAdditive = IsAdditive(attrNode);
if (isAdditive && attrNode != null) {
if (field.IsPrivate) {
this.HandleError(attrNode, Error.AttributeNotAllowedOnPrivateMember, this.GetTypeName(attrNode.Type));
}
}
#region Can't have both [Rep] and [Additive] (or Rep's owned synonyms)
if (MemberIsRep(field) && isAdditive) {
this.HandleError(field, Error.ConflictingAttributes, this.GetTypeName(SystemTypes.RepAttribute),
this.GetTypeName(SystemTypes.AdditiveAttribute));
}
#endregion
return retVal;
}