Auto merge of #8871 - Serial-ATA:cargo-dev-deprecate, r=giraffate

Add `cargo dev deprecate`

changelog: none

I wrote this awhile ago when `regex` was still a dependency. Is it alright to add it back?

Author: bors

clippy_dev/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 
 [dependencies]
 aho-corasick = "0.7"
-clap = "3.1"
+clap = "3.2"
 indoc = "1.0"
 itertools = "0.10.1"
 opener = "0.5"

clippy_dev/src/main.rs

@@ -5,6 +5,7 @@
 use clap::{Arg, ArgAction, ArgMatches, Command, PossibleValue};
 use clippy_dev::{bless, fmt, lint, new_lint, serve, setup, update_lints};
 use indoc::indoc;
+
 fn main() {
     let matches = get_clap_config();
 
@@ -85,6 +86,11 @@ fn main() {
             let uplift = matches.contains_id("uplift");
             update_lints::rename(old_name, new_name, uplift);
         },
+        Some(("deprecate", matches)) => {
+            let name = matches.get_one::<String>("name").unwrap();
+            let reason = matches.get_one("reason");
+            update_lints::deprecate(name, reason);
+        },
         _ => {},
     }
 }
@@ -266,6 +272,18 @@ fn get_clap_config() -> ArgMatches {
                     .long("uplift")
                     .help("This lint will be uplifted into rustc"),
             ]),
+            Command::new("deprecate").about("Deprecates the given lint").args([
+                Arg::new("name")
+                    .index(1)
+                    .required(true)
+                    .help("The name of the lint to deprecate"),
+                Arg::new("reason")
+                    .long("reason")
+                    .short('r')
+                    .required(false)
+                    .takes_value(true)
+                    .help("The reason for deprecation"),
+            ]),
         ])
         .get_matches()
 }

clippy_dev/src/new_lint.rs

@@ -138,7 +138,7 @@ fn to_camel_case(name: &str) -> String {
         .collect()
 }
 
-fn get_stabilization_version() -> String {
+pub(crate) fn get_stabilization_version() -> String {
     fn parse_manifest(contents: &str) -> Option<String> {
         let version = contents
             .lines()