/// <summary>
/// Gets the constraint defined for the field by reflection.
/// </summary>
/// <returns></returns>
private Asn1Constraint GetConstraints()
{
Asn1Constraint Constraint = null;
Object[] attrs;
if (IsInheritedFrom(typeof(Asn1Integer)))
{
attrs = MemberInfo.GetCustomAttributes(typeof(Asn1IntegerBound), true);
if (attrs.Length > 0)
{
Constraint = attrs[0] as Asn1IntegerBound;
}
}
else if (IsInheritedFrom(typeof(Asn1String)))
{
attrs = MemberInfo.GetCustomAttributes(typeof(Asn1StringConstraint), true);
if (attrs.Length > 0)
{
Constraint = attrs[0] as Asn1StringConstraint;
}
}
else if (IsInheritedFrom(typeof(Asn1HomogeneousComposition <>)))
{
attrs = MemberInfo.GetCustomAttributes(typeof(Asn1SizeConstraint), true);
if (attrs.Length > 0)
{
Constraint = attrs[0] as Asn1SizeConstraint;
}
}
return(Constraint);
}
/// <summary>
/// Create a new instance of FieldMetaData with a given MemberInfo.
/// </summary>
/// <param name="outRef">Indicates the reference of the out object that hold this constraint.</param>
/// <param name="info"></param>
/// <remarks>
/// AttachedTag, Constraint will be set automatically by reflection.
/// </remarks>
protected Asn1ConstraintedFieldMetadata(Asn1Object outRef, MemberInfo info)
{
OutReference = outRef;
MemberInfo = info;
//Get AttachedTag
AttachedTag = null;
var attrs = MemberInfo.GetCustomAttributes(typeof(Asn1Tag), true);
if (attrs.Length != 0)
{
//Only the first tag is valid.
Asn1Tag tag = attrs[0] as Asn1Tag;
if (tag.TagType != Asn1TagType.Context && tag.TagType != Asn1TagType.Application)
{
throw new Asn1UserDefinedTypeInconsistent(ExceptionMessages.UserDefinedTypeInconsistent
+ " Only Context-Specific tag and Application tag are allowed.");
}
AttachedTag = tag;
}
//Get Constraint
Constraint = GetConstraints();
}
/// <summary>
/// Create a new instance of FieldMetaData with a given MemberInfo.
/// </summary>
/// <param name="outRef">Indicates the reference of the out object that hold this constraint.</param>
/// <param name="info"></param>
/// <remarks>
/// AttachedTag, Constraint will be set automatically by reflection.
/// </remarks>
protected Asn1ConstraintedFieldMetadata(Asn1Object outRef, MemberInfo info)
{
OutReference = outRef;
MemberInfo = info;
//Get AttachedTag
AttachedTag = null;
var attrs = MemberInfo.GetCustomAttributes(typeof(Asn1Tag), true);
if (attrs.Length != 0)
{
//Only the first tag is valid.
Asn1Tag tag = attrs[0] as Asn1Tag;
if (tag.TagType != Asn1TagType.Context && tag.TagType != Asn1TagType.Application)
{
throw new Asn1UserDefinedTypeInconsistent(ExceptionMessages.UserDefinedTypeInconsistent
+ " Only Context-Specific tag and Application tag are allowed.");
}
AttachedTag = tag;
}
//Get Constraint
Constraint = GetConstraints();
}
/// <summary>
/// Gets the constraint defined for the field by reflection.
/// </summary>
/// <returns></returns>
private Asn1Constraint GetConstraints()
{
Asn1Constraint Constraint = null;
Object[] attrs;
if (IsInheritedFrom(typeof(Asn1Integer)))
{
attrs = MemberInfo.GetCustomAttributes(typeof(Asn1IntegerBound), true);
if (attrs.Length > 0)
{
Constraint = attrs[0] as Asn1IntegerBound;
}
}
else if (IsInheritedFrom(typeof(Asn1String)))
{
attrs = MemberInfo.GetCustomAttributes(typeof(Asn1StringConstraint), true);
if (attrs.Length > 0)
{
Constraint = attrs[0] as Asn1StringConstraint;
}
}
else if (IsInheritedFrom(typeof (Asn1HomogeneousComposition<>)))
{
attrs = MemberInfo.GetCustomAttributes(typeof (Asn1SizeConstraint), true);
if (attrs.Length > 0)
{
Constraint = attrs[0] as Asn1SizeConstraint;
}
}
//TODO: add more when needed.
return Constraint;
}
