Protobuf.Common

type FieldNumber = UInt

data WireType

https://developers.google.com/protocol-buffers/docs/encoding#structure

Constructors

• VarInt
• Bits64
• LenDel
• Bits32

Instances

• Eq WireType
• Generic WireType _
• Ord WireType
• Bounded WireType
• Enum WireType
• BoundedEnum WireType
• Show WireType

newtype Bytes

Representation of a bytes Scalar Value Type field.

Constructors

• Bytes ArrayBuffer

Instances

• Show Bytes
• Eq Bytes
• Newtype Bytes _
• Default Bytes

class Default a  where

In Protobuf, zero values are “default values” and have special semantics.

Members

• default :: a
• isDefault :: a -> Boolean

Instances

• Default String
• Default Int
• Default Number
• Default (Long Signed)
• Default (Long Unsigned)
• Default Float32
• Default Boolean
• Default UInt
• Default Bytes
• (BoundedEnum a) => Default a

fromDefault :: forall a. Default a => Eq a => a -> Maybe a

Turns a default value into Nothing.

toDefault :: forall a. Default a => Maybe a -> a

Turns Nothing into a default value.

The Protobuf spec requires that a field being set to zero (“default”) and a missing field are equivalent states. Because of this, there is no way to tell whether a missing field from a received message is really missing or if the sender meant that the field value is zero. We can use this function to manually choose whether we want a missing field to mean that it’s missing, or to mean that it’s zero.