Macro define_plan_node 

macro_rules! define_plan_node {
    (
        $(#[$meta:meta])*
        pub struct $name:ident {
            $($field:ident: $type:ty),* $(,)?
        }
        enum: $enum_variant:ident
        input: ZeroInputNode
    ) => { ... };
    (
        $(#[$meta:meta])*
        pub struct $name:ident {
            $($field:ident: $type:ty),* $(,)?
        }
        manage_enum: $category:ident :: $variant:ident as $enum_variant:ident
        input: ZeroInputNode
    ) => { ... };
    (
        $(#[$meta:meta])*
        pub struct $name:ident {
            $($field:ident: $type:ty),* $(,)?
        }
        enum: $enum_variant:ident
        input: MultipleInputNode
    ) => { ... };
}

Macro for defining plan nodes (ZeroInputNode and MultipleInputNode variants)

Example

use linkrs_query::define_plan_node;

struct TagProp;

define_plan_node! {
    pub struct GetVerticesNode {
        space_id: i32,
        src_vids: String,
        tag_props: Vec<TagProp>,
    }
    enum: GetVertices
    input: ZeroInputNode
}