Method from_str

src/sql/src/names.rs:948–959

(s: &str)

    type Err = PlanError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        let err = || PlanError::Unstructured(format!("couldn't parse SchemaId {}", s));
        // Validate the (single-byte, ASCII) tag before slicing so that a
        // multi-byte leading character doesn't slice inside a UTF-8 boundary.
        let variant = match s.chars().next() {
            Some('s') => SchemaId::System,
            Some('u') => SchemaId::User,
            _ => return Err(err()),
        };
        let val: u64 = s[1..].parse().map_err(|_| err())?;
        Ok(variant(val))
    }
}

/// The identifier for a database.