INNER CODE UNIT · Rust

expecting

stepancheg/rust-protobuf · protobuf-examples/customize-serde/src/lib.rs:44

        fn expecting(&self, formatter: &mut Formatter) -> std::fmt::Result {
            write!(formatter, "a string, an integer or none")
        }

        fn visit_str<R>(self, v: &str) -> Result<Self::Value, R>
        where
            R: serde::de::Error,
        {
            match E::enum_descriptor().value_by_name(v) {
                Some(v) => Ok(Some(EnumOrUnknown::from_i32(v.value()))),
                None => Err(serde::de::Error::custom(format!(
                    "unknown enum value: {}",
                    v
                ))),
            }
        }

        fn visit_i32<R>(self, v: i32) -> Result<Self::Value, R>

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