Enum RuleMatcher 

pub enum RuleMatcher<T: NodeType> {
    MatchNode {
        typ: T,
        children: Vec<Self>,
    },
    MatchDiscriminant {
        typ_discriminant: Discriminant<T>,
        children: Vec<Self>,
    },
    Any,
    AnyMany,
}

Variants

MatchNode

Match a node of type typ.

Fields

typ: T

children: Vec<Self>

MatchDiscriminant

Match “discriminant” (Only check for variant matches—don’t consider inner data). This may be useful when, for example, one has an enum variant such as ConstantExpr(ConstantType), and one wants to match on all ConstantExpr regardless of the inner ConstantType.

Fields

typ_discriminant: Discriminant<T>

children: Vec<Self>

Any

Match any plan node.

AnyMany

Match all plan node.