/// <summary>
/// Returns a boolean value if we can determine whether the type is managed
/// without looking at its fields and Unset otherwise.
/// </summary>
private static ThreeState IsManagedTypeHelper(NamedTypeSymbol type)
{
// To match dev10, we treat enums as their underlying types.
if (type.IsEnumType())
{
type = type.GetEnumUnderlyingType();
}
// Short-circuit common cases.
switch (type.SpecialType)
{
case SpecialType.System_Void:
case SpecialType.System_Boolean:
case SpecialType.System_Char:
case SpecialType.System_SByte:
case SpecialType.System_Byte:
case SpecialType.System_Int16:
case SpecialType.System_UInt16:
case SpecialType.System_Int32:
case SpecialType.System_UInt32:
case SpecialType.System_Int64:
case SpecialType.System_UInt64:
case SpecialType.System_Decimal:
case SpecialType.System_Single:
case SpecialType.System_Double:
case SpecialType.System_IntPtr:
case SpecialType.System_UIntPtr:
case SpecialType.System_TypedReference:
case SpecialType.System_ArgIterator:
case SpecialType.System_RuntimeArgumentHandle:
return(ThreeState.False);
case SpecialType.None:
default:
// CONSIDER: could provide cases for other common special types.
break; // Proceed with additional checks.
}
if (type.AllTypeArgumentCount() > 0)
{
return(ThreeState.True);
}
switch (type.TypeKind)
{
case TypeKind.Enum:
return(ThreeState.False);
case TypeKind.Struct:
return(ThreeState.Unknown);
default:
return(ThreeState.True);
}
}
/// <summary>
/// Returns a boolean value if we can determine whether the type is managed
/// without looking at its fields and Unset otherwise.
/// </summary>
private static ThreeState IsManagedTypeHelper(NamedTypeSymbol type)
{
// To match dev10, we treat enums as their underlying types.
if (type.IsEnumType())
{
type = type.GetEnumUnderlyingType();
}
// Short-circuit common cases.
switch (type.SpecialType)
{
case SpecialType.System_Void:
case SpecialType.System_Boolean:
case SpecialType.System_Char:
case SpecialType.System_SByte:
case SpecialType.System_Byte:
case SpecialType.System_Int16:
case SpecialType.System_UInt16:
case SpecialType.System_Int32:
case SpecialType.System_UInt32:
case SpecialType.System_Int64:
case SpecialType.System_UInt64:
case SpecialType.System_Decimal:
case SpecialType.System_Single:
case SpecialType.System_Double:
case SpecialType.System_IntPtr:
case SpecialType.System_UIntPtr:
case SpecialType.System_TypedReference:
case SpecialType.System_ArgIterator:
case SpecialType.System_RuntimeArgumentHandle:
return ThreeState.False;
case SpecialType.None:
default:
// CONSIDER: could provide cases for other common special types.
break; // Proceed with additional checks.
}
if (type.AllTypeArgumentCount() > 0)
{
return ThreeState.True;
}
switch (type.TypeKind)
{
case TypeKind.Enum:
return ThreeState.False;
case TypeKind.Struct:
return ThreeState.Unknown;
default:
return ThreeState.True;
}
}
