cypher-dto-macros 0.3.0

The macros for cypher-dto.
Documentation 
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use super::entity::Entity;
use crate::derive::{self, EntityType};
use proc_macro::TokenStream;
use quote::{__private::TokenStream as TokenStream2, quote};
use syn::{DeriveInput, Ident};

pub struct Node {
    inner: Entity,
    id: Entity,
}
impl Node {
    pub fn new(input: DeriveInput) -> Self {
        let (inner, id) = Entity::new(input, EntityType::Node);
        Self { inner, id }
    }

    pub fn to_token_stream(&self) -> TokenStream {
        let main_impl = self.main_entity_tokens();
        let id_impl = self.id_entity_tokens();
        quote! {
            #main_impl
            #id_impl
        }
        .into()
    }

    fn main_entity_tokens(&self) -> TokenStream2 {
        let main_ident = self.inner.ident();
        let idents = self.inner.fields().inner().iter().map(|f| f.ident());
        let from_boltmaps = self.inner.fields().inner().iter().map(|f| f.from_boltmap());
        let id_ident = self.id.ident();
        let id_idents = self.id.fields().inner().iter().map(|f| f.ident());
        let entity_impl = self.inner.entity_impl();
        let builder_impl = self.inner.builder_impl();
        quote! {
            #entity_impl
            impl ::cypher_dto::NodeEntity for #main_ident {
                type Id = #id_ident;
                fn identifier(&self) -> Self::Id {
                    #id_ident {
                        #( #id_idents: self.#id_idents.clone(), )*
                    }
                }
            }
            impl TryFrom<::neo4rs::Node> for #main_ident {
                type Error = ::cypher_dto::Error;
                fn try_from(value: ::neo4rs::Node) -> ::std::result::Result<Self, Self::Error> {
                    Ok(Self {
                        #(#idents: #from_boltmaps),*
                    })
                }
            }
            #builder_impl
        }
    }

    fn id_entity_tokens(&self) -> TokenStream2 {
        let main_ident = self.inner.ident();
        let id_ident = self.id.ident();
        let comment = format!("The unique identifier for a [`{}`] node.", main_ident);
        let idents: Vec<&Ident> = self.id.fields().inner().iter().map(|f| f.ident()).collect();
        let types = self.id.fields().inner().iter().map(|f| f.typ().as_type());
        let from_boltmaps = self.id.fields().inner().iter().map(|f| f.from_boltmap());
        let entity_impl = self.id.entity_impl();
        let serde = derive::derive_serde();
        let vis = self.id.vis();
        quote! {
            #[doc = #comment]
            #[derive(Clone, Debug, PartialEq, #serde)]
            #vis struct #id_ident {
                #( #idents: #types, )*
            }
            #entity_impl
            impl ::cypher_dto::NodeId for #id_ident {
                type T = #main_ident;
            }
            impl From<#main_ident> for #id_ident {
                fn from(value: #main_ident) -> Self {
                    Self {
                        #( #idents: value.#idents, )*
                    }
                }
            }
            impl TryFrom<::neo4rs::Node> for #id_ident {
                type Error = ::cypher_dto::Error;
                fn try_from(value: ::neo4rs::Node) -> ::std::result::Result<Self, Self::Error> {
                    Ok(Self {
                        #(#idents: #from_boltmaps),*
                    })
                }
            }
        }
    }
}

// impl NodeEntity for Person {
//     type Id = PersonId;
//     fn identifier(&self) -> Self::Id {
//         PersonId {
//             id: self.id.clone(),
//         }
//     }
// }
// impl TryFrom<Node> for Person {
//     type Error = Error;
//     fn try_from(value: Node) -> Result<Self, Self::Error> {
//         let map = Neo4jMap::Node(&value);
//         Ok(Self {
//             id: value
//                 .get("id")
//                 .ok_or(Error::MissingField("id".to_owned()))?,
//             name: value
//                 .get("name")
//                 .ok_or(Error::MissingField("name".to_owned()))?,
//             age: match value.get::<i64>("age") {
//                 Some(age) => Some(
//                     age.try_into()
//                         .map_err(|_| Error::TypeMismatch("age".to_owned()))?,
//                 ),
//                 None => None,
//             },
//             created_at: Some(map.get_timestamp("created_at")?),
//             updated_at: Some(map.get_timestamp("updated_at")?),
//         })
//     }
// }
//
// //
// // PersonId
// //
// #[derive(Clone, Debug, PartialEq)]
// pub struct PersonId {
//     pub id: String,
// }
// impl NodeId for PersonId {
//     type T = Person;
// }
// impl From<Person> for PersonId {
//     fn from(value: Person) -> Self {
//         PersonId { id: value.id }
//     }
// }
// impl TryFrom<Node> for PersonId {
//     type Error = Error;
//     fn try_from(value: Node) -> Result<Self, Self::Error> {
//         Ok(Self {
//             id: value
//                 .get("id")
//                 .ok_or(Error::MissingField("id".to_owned()))?,
//         })
//     }
// }