| static private ConvertToPascalCase ( string camelCaseName ) : string | ||
| camelCaseName | string | |
| return | string | |
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
int result = 0;
// What's happening in this code? We express [Flags] enums in JSON as arrays of
// strings. On deserialization, we walk the array, locate each string,
// and convert it to its equivalent enum value. Because we don't have a strong
// sense of the destination type, we simply treat the enum values as numbers
// and OR them together. This number will eventually be unboxed and assigned
// to the target enum property.
// Read start of array
reader.Read();
while (reader.TokenType == JsonToken.String)
{
string enumName = EnumConverter.ConvertToPascalCase((string)reader.Value);
result |= (int)Enum.Parse(objectType, enumName);
reader.Read();
}
return(result);
}
public void EnumConverter_ConvertToPascalCase()
{
Assert.Equal("M", EnumConverter.ConvertToPascalCase("m"));
Assert.Equal("MD", EnumConverter.ConvertToPascalCase("md"));
Assert.Equal("MD5", EnumConverter.ConvertToPascalCase("md5"));
Assert.Equal("MDFoo", EnumConverter.ConvertToPascalCase("mdFoo"));
Assert.Equal("Mfoo", EnumConverter.ConvertToPascalCase("mfoo"));
// NOTE: our heuristics for identifying two letter terms that
// require casing as a group are necessarily limited to our
// specific cases. Doing a reasonable job of this requires
// maintaining a dictionary of two letter words to distinguish
// them from two letter acronyms (which are cased as a group).
// Even with a dictionary, there is overlap, such as with
// Io, a moon of jupiter, and IO.
Assert.Equal("METoo", EnumConverter.ConvertToPascalCase("meToo"));
}