edgarkit 0.1.1

An unofficial Rust client for the SEC EDGAR system
Documentation 
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use serde::{Deserializer, de};
use std::fmt;
use std::str::FromStr;

/// Deserializes a string into a u64
pub fn deserialize_str_to_u64<'de, D>(deserializer: D) -> Result<u64, D::Error>
where
    D: Deserializer<'de>,
{
    struct Visitor;

    impl<'de> de::Visitor<'de> for Visitor {
        type Value = u64;

        fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
            formatter.write_str("a string containing a u64")
        }

        fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
        where
            E: de::Error,
        {
            u64::from_str(v).map_err(E::custom)
        }

        fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
        where
            E: de::Error,
        {
            u64::from_str(&v).map_err(E::custom)
        }

        fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
        where
            E: de::Error,
        {
            Ok(v)
        }

        fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
        where
            E: de::Error,
        {
            u64::try_from(v).map_err(E::custom)
        }
    }

    deserializer.deserialize_any(Visitor)
}