public static bool GetSystemNullableFields(this CorType type, out TokenAndName hasValueInfo, out TokenAndName valueInfo)
{
hasValueInfo = new TokenAndName();
valueInfo = new TokenAndName();
if (type == null || !type.IsSystemNullable)
{
return(false);
}
var cls = type.Class;
var mdi = cls?.Module?.GetMetaDataInterface <IMetaDataImport>();
var fields = MetaDataUtils.GetFields(mdi, cls?.Token ?? 0);
if (fields.Count != 2)
{
return(false);
}
if (fields[0].Name != "hasValue")
{
return(false);
}
if (fields[1].Name != "value")
{
return(false);
}
hasValueInfo = fields[0];
valueInfo = fields[1];
return(true);
}
public static bool GetSystemNullableFields(this CorType type, out TokenAndName hasValueInfo, out TokenAndName valueInfo, out CorType nullableElemType) {
nullableElemType = null;
if (!type.GetSystemNullableFields(out hasValueInfo, out valueInfo))
return false;
nullableElemType = type.FirstTypeParameter;
return nullableElemType != null;
}
public static bool GetSystemNullableFields(this CorType type, out TokenAndName hasValueInfo, out TokenAndName valueInfo, out CorType nullableElemType)
{
nullableElemType = null;
if (!type.GetSystemNullableFields(out hasValueInfo, out valueInfo))
{
return(false);
}
nullableElemType = type.FirstTypeParameter;
return(nullableElemType != null);
}
public static bool GetSystemNullableFields(this CorType type, out TokenAndName hasValueInfo, out TokenAndName valueInfo) {
hasValueInfo = new TokenAndName();
valueInfo = new TokenAndName();
if (type == null || !type.IsSystemNullable)
return false;
var cls = type.Class;
var mdi = cls?.Module?.GetMetaDataInterface<IMetaDataImport>();
var fields = MetaDataUtils.GetFields(mdi, cls?.Token ?? 0);
if (fields.Count != 2)
return false;
if (fields[0].Name != "hasValue")
return false;
if (fields[1].Name != "value")
return false;
hasValueInfo = fields[0];
valueInfo = fields[1];
return true;
}
/// <summary>
/// Gets the <c>System.Nullable</c> fields if it's a nullable type
/// </summary>
/// <param name="hasValueInfo">Updated with <c>hasValue</c> field</param>
/// <param name="valueInfo">Updated with 'value' field</param>
/// <param name="nullableElemType">Updated with nullable element type</param>
/// <returns></returns>
public bool GetSystemNullableFields(out TokenAndName hasValueInfo, out TokenAndName valueInfo, out CorType nullableElemType)
{
return(Utils.GetSystemNullableFields(this, out hasValueInfo, out valueInfo, out nullableElemType));
}
/// <summary>
/// Gets the <c>System.Nullable</c> fields if it's a nullable type
/// </summary>
/// <param name="hasValueInfo">Updated with <c>hasValue</c> field</param>
/// <param name="valueInfo">Updated with 'value' field</param>
/// <returns></returns>
public bool GetSystemNullableFields(out TokenAndName hasValueInfo, out TokenAndName valueInfo)
{
return(Utils.GetSystemNullableFields(this, out hasValueInfo, out valueInfo));
}