Trait Enum

pub trait Enum:
    Eq
    + Sized
    + Copy
    + Debug
    + Default
    + Send
    + Sync
    + 'static {
    const NAME: &'static str;
    const VALUES: &'static [Self] = _;

    // Required methods
    fn value(&self) -> i32;
    fn from_i32(v: i32) -> Option<Self>;
    fn from_str(s: &str) -> Option<Self>;
}

Trait implemented by all protobuf enum types.

Additionally, generated enums also implement EnumFull trait, which provides access to reflection.

Required Associated Constants

const NAME: &'static str

Enum name as specified in .proto file.

There’s full reflection when non-lite runtime code generation is used, and enums implement EnumFull trait. This operation is for lite runtime.

Provided Associated Constants

const VALUES: &'static [Self] = _

All enum values for enum type.

Required Methods

fn value(&self) -> i32

Get enum i32 value.

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

Try to create an enum from i32 value. Return None if value is unknown.

fn from_str(s: &str) -> Option<Self>

Try to create an enum from &str value. Return None if str is unknown.

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

impl Enum for Label

const NAME: &'static str = "Label"

const VALUES: &'static [Label] = _

impl Enum for Type

const NAME: &'static str = "Type"

const VALUES: &'static [Type] = _

impl Enum for CType

const NAME: &'static str = "CType"

const VALUES: &'static [CType] = _

impl Enum for JSType

const NAME: &'static str = "JSType"

const VALUES: &'static [JSType] = _

impl Enum for OptimizeMode

const NAME: &'static str = "OptimizeMode"

const VALUES: &'static [OptimizeMode] = _

impl Enum for IdempotencyLevel

const NAME: &'static str = "IdempotencyLevel"

const VALUES: &'static [IdempotencyLevel] = _

impl Enum for Feature

const NAME: &'static str = "Feature"

const VALUES: &'static [Feature] = _

impl Enum for NullValue

const NAME: &'static str = "NullValue"

const VALUES: &'static [NullValue] = _

impl Enum for Syntax

const NAME: &'static str = "Syntax"

const VALUES: &'static [Syntax] = _

impl Enum for Cardinality

const NAME: &'static str = "Cardinality"

const VALUES: &'static [Cardinality] = _

impl Enum for Kind

const NAME: &'static str = "Kind"

const VALUES: &'static [Kind] = _