Trait Enumeration 

pub trait Enumeration:
    Clone
    + Copy
    + PartialEq
    + Eq
    + Hash
    + Debug {
    // Required methods
    fn from_i32(value: i32) -> Option<Self>;
    fn to_i32(&self) -> i32;
    fn proto_name(&self) -> &'static str;

    // Provided method
    fn from_proto_name(_name: &str) -> Option<Self> { ... }
}

Trait implemented by all generated protobuf enum types.

Required Methods

fn from_i32(value: i32) -> Option<Self>

Convert from an i32 wire value to the enum.

Returns Some for known variants, None for unknown values.

fn to_i32(&self) -> i32

Convert the enum to its i32 wire value.

fn proto_name(&self) -> &'static str

The name of this enum variant as it appears in the .proto file.

Provided Methods

fn from_proto_name(_name: &str) -> Option<Self>

Look up a variant by its protobuf name string.

Returns Some for recognized names, None for unrecognized names. The default implementation always returns None; generated code overrides this with a match on all known variant names.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors