toasty 0.11.0

An async ORM for Rust supporting SQL and NoSQL databases
Documentation 
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use toasty_core::stmt;

use crate::engine::mir;

/// Passes another node's output through unchanged.
///
/// Fills a reserved node slot (see [`Store::reserve`](super::Store::reserve))
/// once planning knows which node actually produces the slot's value. Other
/// statements reference the reserved slot before its producer is planned; the
/// alias makes that reference concrete without rewriting their edges. At
/// execution the pass-through is a move between variable slots — rows are
/// never touched. A future copy-propagation pass may eliminate these.
#[derive(Debug)]
pub(crate) struct Alias {
    /// The node whose output is passed through.
    pub(crate) input: mir::NodeId,

    /// The output type (same as input).
    pub(crate) ty: stmt::Type,
}

impl From<Alias> for mir::Node {
    fn from(value: Alias) -> Self {
        mir::Operation::Alias(value).into()
    }
}