protected override Constant DoResolveValue(EmitContext ec)
{
if (ValueExpr != null)
{
Constant c = ValueExpr.ResolveAsConstant(ec, this);
if (c == null)
{
return(null);
}
if (c is EnumConstant)
{
c = ((EnumConstant)c).Child;
}
c = c.ImplicitConversionRequired(ec, ParentEnum.UnderlyingType, Location);
if (c == null)
{
return(null);
}
if (!IsValidEnumType(c.Type))
{
Enum.Error_1008(Location);
return(null);
}
return(new EnumConstant(c, MemberType));
}
if (prev_member == null)
{
return(new EnumConstant(
New.Constantify(ParentEnum.UnderlyingType), MemberType));
}
if (!prev_member.ResolveValue())
{
return(null);
}
try {
return((EnumConstant)prev_member.value.Increment());
} catch (OverflowException) {
Report.Error(543, Location, "The enumerator value `{0}' is too " +
"large to fit in its type `{1}'", GetSignatureForError(),
TypeManager.CSharpName(ParentEnum.UnderlyingType));
return(null);
}
}
