Auto merge of #8657 - flip1995:raw_lint_desc, r=flip1995

Allow raw lint descriptions

update_lints now understands raw strings in declare_clippy_lint descriptions.

Supersedes  #8655

cc `@Alexendoo` thanks for addressing this so quickly. I build a little bit simpler version of your patch. I don't think it really matters what `Literal` we're trying to tokenize, since we assume later, that it is some sort of `str`.

changelog: none

Author: bors

CHANGELOG.md

@@ -3272,6 +3272,7 @@ Released 2018-09-13
 [`eq_op`]: https://rust-lang.github.io/rust-clippy/master/index.html#eq_op
 [`equatable_if_let`]: https://rust-lang.github.io/rust-clippy/master/index.html#equatable_if_let
 [`erasing_op`]: https://rust-lang.github.io/rust-clippy/master/index.html#erasing_op
+[`err_expect`]: https://rust-lang.github.io/rust-clippy/master/index.html#err_expect
 [`eval_order_dependence`]: https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
 [`excessive_precision`]: https://rust-lang.github.io/rust-clippy/master/index.html#excessive_precision
 [`exhaustive_enums`]: https://rust-lang.github.io/rust-clippy/master/index.html#exhaustive_enums

clippy_dev/src/update_lints.rs

@@ -359,7 +359,7 @@ fn parse_contents(contents: &str, module: &str, lints: &mut Vec<Lint>) {
             // group,
             Ident(group) Comma
             // "description" }
-            Literal{kind: LiteralKind::Str{..}, ..}(desc) CloseBrace
+            Literal{..}(desc) CloseBrace
         );
         lints.push(Lint::new(name, group, desc, module));
     }
@@ -397,6 +397,9 @@ fn parse_deprecated_contents(contents: &str, lints: &mut Vec<DeprecatedLint>) {
 /// Removes the line splices and surrounding quotes from a string literal
 fn remove_line_splices(s: &str) -> String {
     let s = s
+        .strip_prefix('r')
+        .unwrap_or(s)
+        .trim_matches('#')
         .strip_prefix('"')
         .and_then(|s| s.strip_suffix('"'))
         .unwrap_or_else(|| panic!("expected quoted string, found `{}`", s));

clippy_lints/src/lib.register_all.rs

@@ -157,6 +157,7 @@ store.register_group(true, "clippy::all", Some("clippy_all"), vec![
     LintId::of(methods::CHARS_NEXT_CMP),
     LintId::of(methods::CLONE_DOUBLE_REF),
     LintId::of(methods::CLONE_ON_COPY),
+    LintId::of(methods::ERR_EXPECT),
     LintId::of(methods::EXPECT_FUN_CALL),
     LintId::of(methods::EXTEND_WITH_DRAIN),
     LintId::of(methods::FILTER_MAP_IDENTITY),

clippy_lints/src/lib.register_lints.rs

@@ -286,6 +286,7 @@ store.register_lints(&[
     methods::CLONE_DOUBLE_REF,
     methods::CLONE_ON_COPY,
     methods::CLONE_ON_REF_PTR,
+    methods::ERR_EXPECT,
     methods::EXPECT_FUN_CALL,
     methods::EXPECT_USED,
     methods::EXTEND_WITH_DRAIN,

clippy_lints/src/lib.register_style.rs

@@ -59,6 +59,7 @@ store.register_group(true, "clippy::style", Some("clippy_style"), vec![
     LintId::of(methods::BYTES_NTH),
     LintId::of(methods::CHARS_LAST_CMP),
     LintId::of(methods::CHARS_NEXT_CMP),
+    LintId::of(methods::ERR_EXPECT),
     LintId::of(methods::INTO_ITER_ON_REF),
     LintId::of(methods::ITER_CLONED_COLLECT),
     LintId::of(methods::ITER_NEXT_SLICE),