Trait OneofConstraintsExt 

pub trait OneofConstraintsExt {
    // Required method
    fn oneof_constraints(&self) -> ConstraintDecodeResult<OneofRules>;

    // Provided method
    fn try_is_required(&self) -> Result<bool, ConstraintDecodeError> { ... }
}

Extension trait for extracting buf.validate.oneof rules from a oneof descriptor.

Required Methods

fn oneof_constraints(&self) -> ConstraintDecodeResult<OneofRules>

Returns the OneofRules for this oneof, if any.

Errors

Returns an error if the extension value cannot be transcoded to OneofRules.

Provided Methods

fn try_is_required(&self) -> Result<bool, ConstraintDecodeError>

Returns true if this oneof requires exactly one field to be set.

Errors

Returns an error if the extension value cannot be transcoded to OneofRules.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl OneofConstraintsExt for OneofDescriptor

fn oneof_constraints(&self) -> ConstraintDecodeResult<OneofRules>

Implementors