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ProtoDecodeError

toolkit::contract_support::grpc_repr

Enum ProtoDecodeError 

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pub enum ProtoDecodeError {
    ViaString(ViaStringParseError),
    MissingMessage(MissingRequiredMessage),
}
Expand description

Error returned by the fallible decode path (TryFromProto::try_from_proto_wire and the generated inherent try_from_proto).

An enum rather than a single boxed type so a caller can distinguish an absent required message from a malformed via_string field by variant, without downcasting a Box<dyn Error>. The two failures want different handling: a missing message is a wire-shape/version-skew problem, a bad string is a value problem.

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ViaString(ViaStringParseError)

A #[proto_bridge(via_string)] field carried a value its FromStr rejected.

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MissingMessage(MissingRequiredMessage)

A required nested message was absent on the wire.

Trait Implementations§

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impl Debug for ProtoDecodeError

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Display for ProtoDecodeError

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fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Error for ProtoDecodeError

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fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

Read more
1.0.0 · Source§

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
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impl From<MissingRequiredMessage> for ProtoDecodeError

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fn from(source: MissingRequiredMessage) -> ProtoDecodeError

Converts to this type from the input type.
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impl From<ViaStringParseError> for ProtoDecodeError

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fn from(source: ViaStringParseError) -> ProtoDecodeError

Converts to this type from the input type.

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