From bfc850e99a26747de847fcc15b4786836e8dc4c0 Mon Sep 17 00:00:00 2001
From: CreepySkeleton <creepy-skeleton@yandex.ru>
Date: Thu, 5 Mar 2020 11:35:21 +0300
Subject: [PATCH] Suppress warnings in generated code

---
 clap_derive/src/derives/from_argmatches.rs | 80 ++++++++++++++--------
 clap_derive/src/derives/into_app.rs        | 24 +++++++
 clap_derive/src/derives/subcommand.rs      | 12 ++++
 3 files changed, 88 insertions(+), 28 deletions(-)

diff --git a/clap_derive/src/derives/from_argmatches.rs b/clap_derive/src/derives/from_argmatches.rs
index 1201d9314c9..40113029cee 100644
--- a/clap_derive/src/derives/from_argmatches.rs
+++ b/clap_derive/src/derives/from_argmatches.rs
@@ -16,6 +16,58 @@ use syn::{punctuated::Punctuated, spanned::Spanned, Token};
 
 use super::{sub_type, Attrs, Kind, ParserKind, Ty};
 
+pub fn gen_for_struct(
+    struct_name: &syn::Ident,
+    fields: &Punctuated<syn::Field, Token![,]>,
+    parent_attribute: &Attrs,
+) -> proc_macro2::TokenStream {
+    let constructor = gen_constructor(fields, parent_attribute);
+
+    quote! {
+        #[allow(dead_code, unreachable_code, unused_variables)]
+        #[allow(
+            clippy::style,
+            clippy::complexity,
+            clippy::pedantic,
+            clippy::restriction,
+            clippy::perf,
+            clippy::deprecated,
+            clippy::nursery,
+            clippy::cargo
+        )]
+        #[deny(clippy::correctness)]
+        impl ::clap::FromArgMatches for #struct_name {
+            fn from_arg_matches(matches: &::clap::ArgMatches) -> Self {
+                #struct_name #constructor
+            }
+        }
+    }
+}
+
+pub fn gen_for_enum(name: &syn::Ident) -> proc_macro2::TokenStream {
+    quote! {
+        #[allow(dead_code, unreachable_code, unused_variables)]
+        #[allow(
+            clippy::style,
+            clippy::complexity,
+            clippy::pedantic,
+            clippy::restriction,
+            clippy::perf,
+            clippy::deprecated,
+            clippy::nursery,
+            clippy::cargo
+        )]
+        #[deny(clippy::correctness)]
+        impl ::clap::FromArgMatches for #name {
+            fn from_arg_matches(matches: &::clap::ArgMatches) -> Self {
+                let (name, subcmd) = matches.subcommand();
+                <#name as ::clap::Subcommand>::from_subcommand(name, subcmd)
+                    .unwrap()
+            }
+        }
+    }
+}
+
 pub fn gen_constructor(
     fields: &Punctuated<syn::Field, Token![,]>,
     parent_attribute: &Attrs,
@@ -155,31 +207,3 @@ pub fn gen_constructor(
         #( #fields ),*
     }}
 }
-
-pub fn gen_for_struct(
-    struct_name: &syn::Ident,
-    fields: &Punctuated<syn::Field, Token![,]>,
-    parent_attribute: &Attrs,
-) -> proc_macro2::TokenStream {
-    let constructor = gen_constructor(fields, parent_attribute);
-
-    quote! {
-        impl ::clap::FromArgMatches for #struct_name {
-            fn from_arg_matches(matches: &::clap::ArgMatches) -> Self {
-                #struct_name #constructor
-            }
-        }
-    }
-}
-
-pub fn gen_for_enum(name: &syn::Ident) -> proc_macro2::TokenStream {
-    quote! {
-        impl ::clap::FromArgMatches for #name {
-            fn from_arg_matches(matches: &::clap::ArgMatches) -> Self {
-                let (name, subcmd) = matches.subcommand();
-                <#name as ::clap::Subcommand>::from_subcommand(name, subcmd)
-                    .unwrap()
-            }
-        }
-    }
-}
diff --git a/clap_derive/src/derives/into_app.rs b/clap_derive/src/derives/into_app.rs
index a705b3b580d..da4c8c1afc9 100644
--- a/clap_derive/src/derives/into_app.rs
+++ b/clap_derive/src/derives/into_app.rs
@@ -34,6 +34,18 @@ pub fn gen_for_struct(
     let augment_clap = gen_augment_clap_fn(fields, &attrs);
 
     let tokens = quote! {
+        #[allow(dead_code, unreachable_code, unused_variables)]
+        #[allow(
+            clippy::style,
+            clippy::complexity,
+            clippy::pedantic,
+            clippy::restriction,
+            clippy::perf,
+            clippy::deprecated,
+            clippy::nursery,
+            clippy::cargo
+        )]
+        #[deny(clippy::correctness)]
         impl ::clap::IntoApp for #struct_name {
             #into_app
             #augment_clap
@@ -47,6 +59,18 @@ pub fn gen_for_enum(name: &syn::Ident) -> TokenStream {
     let app_name = env::var("CARGO_PKG_NAME").ok().unwrap_or_default();
 
     quote! {
+        #[allow(dead_code, unreachable_code, unused_variables)]
+        #[allow(
+            clippy::style,
+            clippy::complexity,
+            clippy::pedantic,
+            clippy::restriction,
+            clippy::perf,
+            clippy::deprecated,
+            clippy::nursery,
+            clippy::cargo
+        )]
+        #[deny(clippy::correctness)]
         impl ::clap::IntoApp for #name {
             fn into_app<'b>() -> ::clap::App<'b> {
                 let app = ::clap::App::new(#app_name)
diff --git a/clap_derive/src/derives/subcommand.rs b/clap_derive/src/derives/subcommand.rs
index 6e167b08097..7b04eb7a079 100644
--- a/clap_derive/src/derives/subcommand.rs
+++ b/clap_derive/src/derives/subcommand.rs
@@ -21,6 +21,18 @@ pub fn gen_for_enum(name: &Ident, attrs: &[Attribute], e: &DataEnum) -> TokenStr
     let augment_subcommands = gen_augment_subcommands(&e.variants, &attrs);
 
     quote! {
+        #[allow(dead_code, unreachable_code, unused_variables)]
+        #[allow(
+            clippy::style,
+            clippy::complexity,
+            clippy::pedantic,
+            clippy::restriction,
+            clippy::perf,
+            clippy::deprecated,
+            clippy::nursery,
+            clippy::cargo
+        )]
+        #[deny(clippy::correctness)]
         impl ::clap::Subcommand for #name {
             #augment_subcommands
             #from_subcommand