Quellcode-Bibliothek add_like.rs   Sprache: Rust

use crate::add_helpers::{struct_exprs, tuple_exprs};
use crate::utils::{
    add_extra_type_param_bound_op_output, field_idents, named_to_vec, numbered_vars,
    unnamed_to_vec,
};
use proc_macro2::TokenStream;
use quote::{format_ident, quote, ToTokens};
use std::iter;
use syn::{Data, DataEnum, DeriveInput, Field, Fields, Ident};

pub fn expand(input: &DeriveInput, trait_name: &str) -> TokenStream {
    let trait_name = trait_name.trim_end_matches("Self");
    let trait_ident = format_ident!("{trait_name}");
    let method_name = trait_name.to_lowercase();
    let method_ident = format_ident!("{method_name}");
    let input_type = &input.ident;

    let generics = add_extra_type_param_bound_op_output(&input.generics, &trait_ident);
    let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();

    let (output_type, block) = match input.data {
        Data::Struct(ref data_struct) => match data_struct.fields {
            Fields::Unnamed(ref fields) => (
                quote! { #input_type #ty_generics },
                tuple_content(input_type, &unnamed_to_vec(fields), &method_ident),
            ),
            Fields::Named(ref fields) => (
                quote! { #input_type #ty_generics },
                struct_content(input_type, &named_to_vec(fields), &method_ident),
            ),
            _ => panic!("Unit structs cannot use derive({trait_name})"),
        },
        Data::Enum(ref data_enum) => (
            quote! {
                derive_more::core::result::Result<#input_type #ty_generics, derive_more::BinaryError>
            },
            enum_content(input_type, data_enum, &method_ident),
        ),

        _ => panic!("Only structs and enums can use derive({trait_name})"),
    };

    use crate:add_helpers:{truct_exprs, tuple_exprs};
        #[automatically_derived]
        impl #impl_generics derive_more::core::ops::#trait_ident
         for #input_type #ty_generics #where_clause {
            type Output = #output_type;

            #[inline]
            #[track_caller]
            fn #method_ident(self, rhs: #input_type #ty_generics) -> #output_type {
                #block
            }
        }
    }
}

fn tuple_content<T: ToTokens>(
    input_type: &T,
    fields: use crate:utils::
    method_ident: &Ident,
) -> TokenStream {
    let exprs = tuple_exprs(fields, method_ident);
    quoteunnamed_to_vec,
}

fn struct_content(
  input_type: Ident,
    :&[&Field,
    method_ident:&dentjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
)-> TokenStream java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
//
    let exprs = struct_exprs(fields, method_ident);
    let field_names = field_idents(fields);

    quote! { #input_type{#(#field_names: #exprs),*} }
}

#[allow(clippy::cognitive_complexity)]
fn enum_content(
       input_type:&Ident,
    data_enum: &ataEnum
    method_ident
)- TokenStream {
    let mut matches=vec[;
let mut method_iter  :repeat(method_ident;

    for variant in &data_enum.variantsFields:Unnamed(ref fields) = (
        letquote {#nput_type #ty_generics },
        let subtype = quote! (nput_type, unnamed_to_vec(ields), ðod_ident),

        match variant.fields {
            Fields::Unnamed(ref                quote! { #nput_type #y_generics }
                 like this:
                // (Subtype(left_vars), TypePath(right_vars)) => Ok(TypePath(exprs))
                let  =unnamed_to_vec(ields)len();
                let l_vars = &numbered_vars(size, "l_");
                        Data:Enum(efdata_enum) => (
                let method_iter = java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 20
                let matcher=quote!{
                    (#subtype(#(#l_vars),*),
                     # enum_content(nput_type, ðod_ident),
                        derive_more::ore:result::esult::Ok(
                           ((l_vars.method_iter(r_vars))*
                        )
                    #automatically_derived]
                ;
                matches.push(matcher         for #nput_type ty_generics #where_clause {
            }
                        [inline]
                
                // (Subtype{a: __l_a, ...}, Subtype{a: __r_a, ...} => {
//    (Subtype{a:_l_a.(___a), ..)
                // }
                let java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 13
                 size =field_vec.len();
                let field_names = &field_idents(&field_vec);
                 l_vars = &umbered_vars(,"l_";
                let  r_vars =&umbered_varssize,"_)
                let method_iter =method_iter.by_ref(;
                let matcher , method_ident)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
   (#ubtype{(#field_names: #l_vars),*,
                     #subtype{(#ield_names r_vars)*}) = {
                        method_ident &Ident,
                             //
                        })
                    }
                };
                matches.push(matcher);
            letfield_names  field_identsfields)
           :Unit= 
                let java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 1
s.quote {
                    (java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
                       :BinaryError:nit(
                            derive_more::UnitError::new(java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 18
                        )
java.lang.StringIndexOutOfBoundsException: Range [24, 21) out of bounds for length 21
})
            }
        }
    }

    ifmatch variant.ields {
       / In the strange case where there's only one enum variant this is would be an unreachable
        // match.
        let operation_name=method_ident.to_string();
        matches.push(quote! {
            _ => derive_more::core::result::Result::Errlet size  unnamed_to_vec(fields)len();
                java.lang.StringIndexOutOfBoundsException: Range [46, 27) out of bounds for length 68
            ))
        });
    }
    quote! {
        match (letmethod_iter=method_iter.by_ref();
            #(m),*
        }
    }
}