teo_runtime/value/convert/into/
str.rs

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use teo_result::Error;
use crate::value::Value;

impl<'a> TryFrom<&'a Value> for &'a str {

    type Error = Error;

    fn try_from(value: &'a Value) -> Result<Self, Self::Error> {
        match value {
            Value::String(s) => Ok(s.as_str()),
            _ => Err(Error::new(format!("Cannot convert {} into &str", value.type_hint()))),
        }
    }
}

impl<'a> TryFrom<&'a Value> for Option<&'a str> {

    type Error = Error;

    fn try_from(value: &'a Value) -> Result<Option<&'a str>, Self::Error> {
        match value {
            Value::Null => Ok(None),
            Value::String(s) => Ok(Some(s.as_str())),
            _ => Err(Error::new(format!("Cannot convert {} into Option<&str>", value.type_hint()))),
        }
    }
}