/// <summary>
/// Initializes a new instance of the EnumDefinition class
/// Populates this object with information extracted from the XML
/// </summary>
/// <param name="theNode">XML node describing the Enum object</param>
/// <param name="manager">The data dictionary manager constructing this type.</param>
public EnumDefinition(XElement theNode, DictionaryManager manager)
: base(theNode, TypeId.EnumType)
{
// ByteSize may be set either directly as an integer or by inference from the Type field.
// If no Type field is present then the type is assumed to be 'int'
if (theNode.Element("ByteSize") != null)
{
SetByteSize(theNode.Element("ByteSize").Value);
}
else
{
string baseTypeName = theNode.Element("Type") != null ? theNode.Element("Type").Value : "int";
BaseType = manager.GetElementType(baseTypeName);
BaseType = DictionaryManager.DereferenceTypeDef(BaseType);
FixedSizeBytes = BaseType.FixedSizeBytes.Value;
}
// Common properties are parsed by the base class.
// Remaining properties are the Name/Value Literal elements
List<LiteralDefinition> theLiterals = new List<LiteralDefinition>();
foreach (var literalNode in theNode.Elements("Literal"))
{
theLiterals.Add(new LiteralDefinition(literalNode));
}
m_Literals = new ReadOnlyCollection<LiteralDefinition>(theLiterals);
// Check the name. If it's null then make one up
if (theNode.Element("Name") == null)
{
Name = String.Format("Enum_{0}", Ref);
}
}
/// <summary>
/// Overrides the initial type.
/// </summary>
/// <param name="theInitialType">The initial type.</param>
public void OverrideInitialType (TypeDefinition theInitialType)
{
InitialType = theInitialType;
}
/// <summary>
/// Follow typedefs until a concrete type is found
/// </summary>
/// <param name="theType"></param>
/// <returns>Type definition aliased by theType</returns>
public static TypeDefinition DereferenceTypeDef(TypeDefinition theType)
{
TypedefDefinition theTypeDef = theType as TypedefDefinition;
while (theTypeDef != null)
{
theType = theTypeDef.AliasedType;
theTypeDef = theType as TypedefDefinition;
}
return theType;
}
/// <summary>
/// Initializes a new instance of the <see cref="Value"/> class.
/// </summary>
/// <param name="theTypeDefinition">The type definition.</param>
/// <param name="parent">The parent.</param>
public Value(TypeDefinition theTypeDefinition, Value parent)
{
FundamentalType = InitialType = theTypeDefinition;
Parent = parent;
}
/// <summary>
/// Initializes a new instance of the AttributeDefinition class
/// Constructor. Create a new object by reading contents from the XML node.
/// </summary>
/// <param name="attributeNode">The attribute node.</param>
/// <param name="theManager">The manager.</param>
/// <param name="parentType">The parent structure.</param>
public AttributeDefinition(XElement attributeNode, DictionaryManager theManager, TypeDefinition parentType)
{
Name = attributeNode.Element("Name").Value;
if (attributeNode.Element("Discriminator") == null)
{
Discriminator = string.Empty;
HasDiscriminator = false;
}
else
{
Discriminator = attributeNode.Element("Discriminator").Value;
HasDiscriminator = true;
}
if (attributeNode.Element("ByteOffset") != null)
{
int byteOffset;
if (!int.TryParse(attributeNode.Element("ByteOffset").Value, out byteOffset))
{
throw new DataDictionaryException("{0} : failed to parse ByteOffset as an integer", attributeNode.ToString());
}
ByteOffset = byteOffset;
}
HasLengthIndicator = false;
if (attributeNode.Element("ByteSize") != null)
{
LengthIndicator = attributeNode.Element("ByteSize").Value;
HasLengthIndicator = true;
}
// Type of the attribute may identified by a number that is the Ref field of a type somewhere
// or by the name of the type
// or by the XML element nested within the attribute definition
if (attributeNode.Element("Type") != null)
{
Type = theManager.GetElementType(attributeNode.Element("Type").Value);
}
else
{
// Nested type
Type = theManager.GetNestedTypeDefinition(attributeNode);
}
// Follow aliases of typedefs so that the underlying type is stored
TypeDefinition theType = Type;
while (theType is TypedefDefinition)
{
theType = ((TypedefDefinition)theType).AliasedType;
}
// Finally, if we've just created a Switch type set the discriminator
if (theType != null && theType.TypeId == TypeId.SwitchType)
{
SwitchDefinition theSwitchDefinition = Type as SwitchDefinition;
if (string.IsNullOrEmpty(Discriminator))
{
throw new DataDictionaryException("Attribute {0}: no discriminator supplied for Switch {1}", Name, Type.Name);
}
StructureDefinition structureDefinition = (StructureDefinition)parentType;
theSwitchDefinition.Discriminator = structureDefinition.AttributeDefinitions[Discriminator];
theSwitchDefinition.Discriminator.DiscriminatorFor = this;
}
}
