protobuf::types

Trait ProtobufType

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pub trait ProtobufType {
    type Value: ProtobufValue + Clone + 'static;

    // Required methods
    fn wire_type() -> WireType;
    fn read(is: &mut CodedInputStream<'_>) -> ProtobufResult<Self::Value>;
    fn compute_size(value: &Self::Value) -> u32;
    fn get_from_unknown(unknown_values: &UnknownValues) -> Option<Self::Value>;
    fn write_with_cached_size(
        field_number: u32,
        value: &Self::Value,
        os: &mut CodedOutputStream<'_>,
    ) -> ProtobufResult<()>;

    // Provided methods
    fn compute_size_with_length_delimiter(value: &Self::Value) -> u32 { ... }
    fn get_cached_size(value: &Self::Value) -> u32 { ... }
    fn get_cached_size_with_length_delimiter(value: &Self::Value) -> u32 { ... }
}
Expand description

Protobuf elementary type as generic trait

Required Associated Types§

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type Value: ProtobufValue + Clone + 'static

Rust type of value

Required Methods§

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fn wire_type() -> WireType

Wire type when writing to stream

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fn read(is: &mut CodedInputStream<'_>) -> ProtobufResult<Self::Value>

Read value from CodedInputStream

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fn compute_size(value: &Self::Value) -> u32

Compute wire size

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fn get_from_unknown(unknown_values: &UnknownValues) -> Option<Self::Value>

Get value from UnknownValues

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fn write_with_cached_size( field_number: u32, value: &Self::Value, os: &mut CodedOutputStream<'_>, ) -> ProtobufResult<()>

Write a value with previously cached size

Provided Methods§

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fn compute_size_with_length_delimiter(value: &Self::Value) -> u32

Compute size adding length prefix if wire type is length delimited (i. e. string, bytes, message)

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fn get_cached_size(value: &Self::Value) -> u32

Get previously computed size

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fn get_cached_size_with_length_delimiter(value: &Self::Value) -> u32

Get previously cached size with length prefix

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§