private IEnumerable <ExportDefinition> GetExportDefinitions()
{
List <ExportDefinition> exports = new List <ExportDefinition>();
_contractNamesOnNonInterfaces = new HashSet <string>();
// GetExportMembers should only contain the type itself along with the members declared on it,
// it should not contain any base types, members on base types or interfaces on the type.
foreach (MemberInfo member in GetExportMembers(_type))
{
foreach (ExportAttribute exportAttribute in member.GetAttributes <ExportAttribute>())
{
AttributedExportDefinition attributedExportDefinition = CreateExportDefinition(member, exportAttribute);
if (exportAttribute.GetType() == CompositionServices.InheritedExportAttributeType)
{
// Any InheritedExports on the type itself are contributed during this pass
// and we need to do the book keeping for those.
if (!_contractNamesOnNonInterfaces.Contains(attributedExportDefinition.ContractName))
{
exports.Add(new ReflectionMemberExportDefinition(member.ToLazyMember(), attributedExportDefinition, this));
_contractNamesOnNonInterfaces.Add(attributedExportDefinition.ContractName);
}
}
else
{
exports.Add(new ReflectionMemberExportDefinition(member.ToLazyMember(), attributedExportDefinition, this));
}
}
}
// GetInheritedExports should only contain InheritedExports on base types or interfaces.
// The order of types returned here is important because it is used as a
// priority list of which InhertedExport to choose if multiple exists with
// the same contract name. Therefore ensure that we always return the types
// in the hierarchy from most derived to the lowest base type, followed
// by all the interfaces that this type implements.
foreach (Type type in GetInheritedExports(_type))
{
foreach (InheritedExportAttribute exportAttribute in type.GetAttributes <InheritedExportAttribute>())
{
AttributedExportDefinition attributedExportDefinition = CreateExportDefinition(type, exportAttribute);
if (!_contractNamesOnNonInterfaces.Contains(attributedExportDefinition.ContractName))
{
exports.Add(new ReflectionMemberExportDefinition(type.ToLazyMember(), attributedExportDefinition, this));
if (!type.IsInterface)
{
_contractNamesOnNonInterfaces.Add(attributedExportDefinition.ContractName);
}
}
}
}
_contractNamesOnNonInterfaces = null; // No need to hold this state around any longer
return(exports);
}
private IEnumerable<ExportDefinition> GetExportDefinitions()
{
List<ExportDefinition> exports = new List<ExportDefinition>();
this._contractNamesOnNonInterfaces = new HashSet<string>();
// GetExportMembers should only contain the type itself along with the members declared on it,
// it should not contain any base types, members on base types or interfaces on the type.
foreach (MemberInfo member in GetExportMembers(this._type))
{
foreach (ExportAttribute exportAttribute in member.GetAttributes<ExportAttribute>())
{
var attributedExportDefinition = new AttributedExportDefinition(this, member, exportAttribute);
if (exportAttribute.GetType() == CompositionServices.InheritedExportAttributeType)
{
// Any InheritedExports on the type itself are contributed during this pass
// and we need to do the book keeping for those.
if (!this._contractNamesOnNonInterfaces.Contains(attributedExportDefinition.ContractName))
{
exports.Add(new ReflectionMemberExportDefinition(member.ToLazyMember(), attributedExportDefinition, this));
this._contractNamesOnNonInterfaces.Add(attributedExportDefinition.ContractName);
}
}
else
{
exports.Add(new ReflectionMemberExportDefinition(member.ToLazyMember(), attributedExportDefinition, this));
}
}
}
// GetInheritedExports should only contain InheritedExports on base types or interfaces.
// The order of types returned here is important because it is used as a
// priority list of which InhertedExport to choose if multiple exists with
// the same contract name. Therefore ensure that we always return the types
// in the hiearchy from most derived to the lowest base type, followed
// by all the interfaces that this type implements.
foreach (Type type in GetInheritedExports(this._type))
{
foreach (InheritedExportAttribute exportAttribute in type.GetAttributes<InheritedExportAttribute>())
{
var attributedExportDefinition = new AttributedExportDefinition(this, type, exportAttribute);
if (!this._contractNamesOnNonInterfaces.Contains(attributedExportDefinition.ContractName))
{
exports.Add(new ReflectionMemberExportDefinition(type.ToLazyMember(), attributedExportDefinition, this));
if (!type.IsInterface)
{
this._contractNamesOnNonInterfaces.Add(attributedExportDefinition.ContractName);
}
}
}
}
this._contractNamesOnNonInterfaces = null; // No need to hold this state around any longer
return exports;
}