//! A list of path names.

/// The struct hold a list of path names.
/// Users of the Toql library should use the paths! macro to
/// build it. The `paths!` macro provides compile time garanties.
/// Unlike [Query](crate::query::Query) Paths is not typesafe.
/// This will be improved in the future.
pub struct Paths {
    pub list: Vec<String>,
}

impl Paths {
    pub fn top() -> Self {
        Self::from(vec![])
    }

    pub fn from(fields: Vec<String>) -> Self {
        Paths { list: fields }
    }
    pub fn into_inner(self) -> Vec<String> {
        self.list
    }
}

#[cfg(test)]
mod test {
    use super::Paths;

    #[test]
    fn paths_top() {
        assert!(Paths::top().into_inner().is_empty());
    }
    #[test]
    fn paths_from() {
        assert_eq!(
            Paths::from(vec!["level1".to_string()]).into_inner(),
            ["level1"]
        );
    }
}