libsql 0.9.30

The libSQL database library
Documentation 
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use crate::hrana::HranaRows;
use crate::hrana::HttpSend;
use crate::Row;
use bytes::Bytes;
use futures::Stream;

pub struct Rows {
    pub(super) inner: Box<dyn RowsInner>,
}

impl Rows {
    pub async fn next(&mut self) -> crate::Result<Option<Row>> {
        self.inner.next().await
    }

    pub fn column_count(&self) -> i32 {
        self.inner.column_count()
    }

    pub fn column_name(&self, idx: i32) -> Option<&str> {
        self.inner.column_name(idx)
    }

    /// Converts current [crate::Rows] into asynchronous stream, fetching rows
    /// one by one. This stream can be further used with [futures::StreamExt]
    /// operators.
    pub fn into_stream(mut self) -> impl Stream<Item = crate::Result<Row>> + Unpin {
        Box::pin(async_stream::try_stream! {
            if let Some(row) = self.next().await? {
                yield row
            }
        })
    }
}

#[async_trait::async_trait(?Send)]
pub(super) trait RowsInner {
    async fn next(&mut self) -> crate::Result<Option<Row>>;

    fn column_count(&self) -> i32;

    fn column_name(&self, idx: i32) -> Option<&str>;
}

#[async_trait::async_trait(?Send)]
impl<S, T> RowsInner for HranaRows<S, T>
where
    T: HttpSend + Sync + Send + 'static,
    S: Stream<Item = std::io::Result<Bytes>> + Unpin,
{
    async fn next(&mut self) -> crate::Result<Option<Row>> {
        self.next().await
    }

    fn column_count(&self) -> i32 {
        self.column_count()
    }

    fn column_name(&self, idx: i32) -> Option<&str> {
        self.column_name(idx)
    }
}