/// <summary>
/// Parses a Thrift field from the specified PropertyInfo.
/// If the PropertyInfo is not declared as a Thrift field, returns null.
/// </summary>
private static ThriftField ParseField(PropertyInfo propertyInfo)
{
var attr = propertyInfo.GetCustomAttribute <ThriftFieldAttribute>();
if (attr == null)
{
return(null);
}
var propertyTypeInfo = propertyInfo.PropertyType.GetTypeInfo();
var nullableType = Nullable.GetUnderlyingType(propertyInfo.PropertyType);
if (attr.IsRequired)
{
if (attr.DefaultValue != null)
{
throw ThriftParsingException.DefaultValueOnRequiredField(propertyInfo);
}
if (nullableType != null)
{
throw ThriftParsingException.RequiredNullableField(propertyInfo);
}
}
else
{
if (attr.DefaultValue == null && propertyTypeInfo.IsValueType && nullableType == null)
{
throw ThriftParsingException.OptionalValueField(propertyInfo);
}
}
if (attr.DefaultValue != null)
{
if (attr.Converter == null)
{
if (attr.DefaultValue.GetType() != (nullableType ?? propertyInfo.PropertyType))
{
throw ThriftParsingException.DefaultValueOfWrongType(propertyInfo);
}
}
else
{
if (attr.DefaultValue.GetType() != attr.ThriftConverter.FromType)
{
throw ThriftParsingException.DefaultValueOfWrongType(propertyInfo);
}
}
}
return(new ThriftField(attr.Id, attr.Name, attr.IsRequired, attr.DefaultValue, attr.ThriftConverter, propertyInfo));
}
