xavier-derive 0.1.7

Derive module of Xavier. Xavier is a lightweight and versatile XML parsing library designed to streamline the process of handling XML data with ease and efficiency.
Documentation 
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extern crate proc_macro;

use syn::{DataEnum, DataUnion, DeriveInput, Error, Fields, FieldsNamed, FieldsUnnamed};
use proc_macro::TokenStream;
use quote::quote;
use syn::Data::{Enum, Struct, Union};
use syn::parse_macro_input;
use crate::serialize::parser::streams::{SerStreamType, XmlSerStream};

//Debug imports
#[allow(unused_imports)]
use syn::{File, parse2};
#[allow(unused_imports)]
use log::debug;

pub fn impl_xml_serializable(input: TokenStream) -> TokenStream {
    let input = parse_macro_input!(input as DeriveInput);
    let (impl_generics, ty_generics, where_clause) = &input.generics.split_for_impl();
    let object_name = &input.ident;

    let xml_code = match &input.data {
        Struct(obj) => match &obj.fields {
            Fields::Named(FieldsNamed { .. }) => { XmlSerStream::stream(&input, SerStreamType::Complex) },
            Fields::Unnamed(FieldsUnnamed { .. }) => { XmlSerStream::stream(&input, SerStreamType::Simple) }
            Fields::Unit => { XmlSerStream::stream(&input, SerStreamType::Empty) }
        },
        Enum(DataEnum { .. }) => { XmlSerStream::stream(&input, SerStreamType::Enum) },
        Union(DataUnion { .. }) => {
            let message = "Proc macro 'xml serialize' does not support this type of object config.";
            return Error::new_spanned(object_name, message).to_compile_error().into();
        }
    };

    let expanded = quote! {
        impl #impl_generics xavier::serialize::macro_trait::XmlSerializable for #object_name #ty_generics #where_clause {
            fn to_xml(&self, xa_tag_name: Option<&str>, xa_root: bool) -> String {
                #xml_code
            }
        }
        impl xavier::serialize::macro_trait::XmlSerializable for Box<#object_name> {
            fn to_xml(&self, xa_tag_name: Option<&str>, xa_root: bool) -> String {
                #xml_code
            }
        }
    };

    // let dbg_object = "TestCollectionInner";
    // if object_name == dbg_object {
    //     let syntax: File = parse2(TokenStream::from(expanded.clone()).into()).expect("Failed to parse tokens as a file");
    //     let formatted = prettyplease::unparse(&syntax);
    //     println!("{}", formatted);
    // }
    TokenStream::from(expanded)
}