optd_core/rules/
ir.rs

1// Copyright (c) 2023-2024 CMU Database Group
2//
3// Use of this source code is governed by an MIT-style license that can be found in the LICENSE file or at
4// https://opensource.org/licenses/MIT.
5
6use crate::nodes::NodeType;
7
8pub enum RuleMatcher<T: NodeType> {
9    /// Match a node of type `typ`.
10    MatchNode { typ: T, children: Vec<Self> },
11    /// Match "discriminant" (Only check for variant matches---don't consider
12    /// inner data).
13    /// This may be useful when, for example, one has an enum variant such as
14    /// ConstantExpr(ConstantType), and one wants to match on all ConstantExpr
15    /// regardless of the inner ConstantType.
16    MatchDiscriminant {
17        typ_discriminant: std::mem::Discriminant<T>,
18        children: Vec<Self>,
19    },
20    /// Match any plan node.
21    Any,
22    /// Match all plan node.
23    AnyMany,
24}
optd_core/rules/ir.rs

optd_core/rules/
ir.rs
