Define "extend" for a message(the first argument module).

Define extensions range in the message module to allow extensions for this module.

Extension ranges are defined as a list of tuples {start, end}, where each tuple is an exclusive range starting and start and ending at end (the equivalent of start..end-1 in Elixir).

To simulate the Protobuf max keyword, you can use Protobuf.Extension.max/0.

Examples

These Protobuf definition:

message Foo {
  extensions 1, 10 to 20, 100 to max;
}copy

Would be translated in Elixir to:

extensions [{1, 2}, {10, 21}, {100, Protobuf.Extension.max()}]copy

Define a field for the message.

Corresponds to Protobuf declarations such as:

string query = 1;copy

or more generally

<type> <name> = <field_number>;copy

Arguments

• name — must be an atom representing the name of the field.
• field_number — must be an integer representing the field number.
• options - a keyword list of options, see below.

Options

• :proto3_optional - boolean representing whether the field is optional with the proto3 syntax. See the documentation

• :type - atom representing the type of the field.

• :repeated - boolean representing whether the field is repeated.

• :optional - boolean representing whether the field is optional.

• :required - boolean representing whether the field is required.

• :enum - boolean representing whether the field is a possible value of an enum.

• :map - boolean representing whether the field is a part of a map.

• :default - the default value of the field. Must be a valid Elixir term at compile time, that can be encoded with Protobuf and matches with the type of the field.

• :packed - boolean representing whether the field is packed.

• :deprecated - boolean representing whether the field is deprecated.

• :json_name - if present, specifies the name of the field when using the JSON mapping (see Protobuf.JSON). If not present, the default mapping will be used.

Define oneof in the message module.