dynamic-graphql-derive 0.10.2

Dynamic GraphQL schema macro
Documentation 
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use proc_macro2::TokenStream;
use quote::ToTokens;
use quote::quote;
use syn::Generics;

use super::common::impl_suppress_tupple_clippy_error;
use crate::utils::crate_name::get_crate_name;
use crate::utils::derive_types::BaseStruct;
use crate::utils::derive_types::TupleField;

pub type App = BaseStruct<TupleField, Generics>;

fn impl_suppress_clippy_error(app: &App) -> TokenStream {
    impl_suppress_tupple_clippy_error(&app.ident, &app.generics, app.data.fields.len())
}

fn impl_create_schema(app: &App) -> TokenStream {
    let crate_name = get_crate_name();
    let ident = &app.ident;
    let (impl_generics, ty_generics, where_clause) = app.generics.split_for_impl();

    quote! {
        impl #impl_generics #ident #ty_generics #where_clause {
            pub fn create_schema() -> #crate_name::dynamic::SchemaBuilder {
                let registry = #crate_name::internal::Registry::new();
                let registry = registry.register::<Self>();
                registry.create_schema()
            }
        }
    }
}

fn impl_register(app: &App) -> TokenStream {
    let crate_name = get_crate_name();
    let ident = &app.ident;
    let registers: TokenStream = app
        .data
        .fields
        .iter()
        .map(|field| {
            let ty = &field.ty;
            quote! {
                let registry = registry.register::<#ty>();
            }
        })
        .collect();
    let (impl_generics, ty_generics, where_clause) = app.generics.split_for_impl();
    quote! {
        impl #impl_generics #crate_name::internal::Register for #ident #ty_generics #where_clause {
            fn register(registry: #crate_name::internal::Registry) -> #crate_name::internal::Registry {
                #registers
                registry
            }
        }
    }
}

impl ToTokens for App {
    fn to_tokens(&self, tokens: &mut TokenStream) {
        let impl_register = impl_register(self);
        let impl_create_schema = impl_create_schema(self);
        let impl_suppress_clippy_error = impl_suppress_clippy_error(self);
        tokens.extend(quote! {
            #impl_register
            #impl_create_schema
            #impl_suppress_clippy_error
        });
    }
}