Move declare_clippy_lint back into clippy_lints

Author: smoelius

clippy_dev/src/lib.rs

@@ -186,17 +186,11 @@ fn gather_from_file(dir_entry: &walkdir::DirEntry) -> impl Iterator<Item = Lint>
     let path_buf = path.with_file_name(filename);
     let mut rel_path = path_buf
         .strip_prefix(clippy_project_root().join("clippy_lints/src"))
-        .map(PathBuf::from)
-        .or_else(|_| {
-            path_buf
-                .strip_prefix(clippy_project_root().join("clippy_utils/src"))
-                .map(|c| Path::new("utils").join(c))
-        })
-        .expect("only files in `clippy_lints/src` or `clippy_utils/src` should be looked at");
+        .expect("only files in `clippy_lints/src` should be looked at");
     // If the lints are stored in mod.rs, we get the module name from
     // the containing directory:
     if filename == "mod" {
-        rel_path = rel_path.parent().unwrap().to_path_buf();
+        rel_path = rel_path.parent().unwrap();
     }
 
     let module = rel_path
@@ -219,15 +213,13 @@ fn parse_contents(content: &str, module: &str) -> impl Iterator<Item = Lint> {
     lints.chain(deprecated).collect::<Vec<Lint>>().into_iter()
 }
 
-/// Collects all .rs files in the `clippy_lints/src` and `clippy_utils/src` directories
+/// Collects all .rs files in the `clippy_lints/src` directory
 fn lint_files() -> impl Iterator<Item = walkdir::DirEntry> {
     // We use `WalkDir` instead of `fs::read_dir` here in order to recurse into subdirectories.
     // Otherwise we would not collect all the lints, for example in `clippy_lints/src/methods/`.
-    let clippy_lints_path = clippy_project_root().join("clippy_lints/src");
-    let clippy_utils_path = clippy_project_root().join("clippy_utils/src");
-    WalkDir::new(clippy_lints_path)
+    let path = clippy_project_root().join("clippy_lints/src");
+    WalkDir::new(path)
         .into_iter()
-        .chain(WalkDir::new(clippy_utils_path).into_iter())
         .filter_map(Result::ok)
         .filter(|f| f.path().extension() == Some(OsStr::new("rs")))
 }

clippy_lints/src/lib.rs

@@ -46,9 +46,103 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_lint::LintId;
 use rustc_session::Session;
 
+/// Macro used to declare a Clippy lint.
+///
+/// Every lint declaration consists of 4 parts:
+///
+/// 1. The documentation, which is used for the website
+/// 2. The `LINT_NAME`. See [lint naming][lint_naming] on lint naming conventions.
+/// 3. The `lint_level`, which is a mapping from *one* of our lint groups to `Allow`, `Warn` or
+///    `Deny`. The lint level here has nothing to do with what lint groups the lint is a part of.
+/// 4. The `description` that contains a short explanation on what's wrong with code where the
+///    lint is triggered.
+///
+/// Currently the categories `style`, `correctness`, `complexity` and `perf` are enabled by default.
+/// As said in the README.md of this repository, if the lint level mapping changes, please update
+/// README.md.
+///
+/// # Example
+///
+/// ```
+/// #![feature(rustc_private)]
+/// extern crate rustc_session;
+/// use rustc_session::declare_tool_lint;
+/// use clippy_lints::declare_clippy_lint;
+///
+/// declare_clippy_lint! {
+///     /// **What it does:** Checks for ... (describe what the lint matches).
+///     ///
+///     /// **Why is this bad?** Supply the reason for linting the code.
+///     ///
+///     /// **Known problems:** None. (Or describe where it could go wrong.)
+///     ///
+///     /// **Example:**
+///     ///
+///     /// ```rust
+///     /// // Bad
+///     /// Insert a short example of code that triggers the lint
+///     ///
+///     /// // Good
+///     /// Insert a short example of improved code that doesn't trigger the lint
+///     /// ```
+///     pub LINT_NAME,
+///     pedantic,
+///     "description"
+/// }
+/// ```
+/// [lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
 #[macro_export]
 macro_rules! declare_clippy_lint {
-    ( $($x:tt)* ) => { clippy_utils::declare_clippy_lint!($($x)*); }
+    { $(#[$attr:meta])* pub $name:tt, style, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, correctness, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Deny, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, complexity, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, perf, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, pedantic, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, restriction, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, cargo, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, nursery, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, internal, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
+        }
+    };
+    { $(#[$attr:meta])* pub $name:tt, internal_warn, $description:tt } => {
+        declare_tool_lint! {
+            $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
+        }
+    };
 }
 
 #[macro_export]

clippy_lints/src/utils.rs

@@ -1,7 +1,7 @@
 //! A group of attributes that can be attached to Rust code in order
 //! to generate a clippy lint detecting said code automatically.
 
-use crate::{declare_clippy_lint, get_attr};
+use crate::utils::get_attr;
 use rustc_ast::ast::{Attribute, LitFloatType, LitKind};
 use rustc_ast::walk_list;
 use rustc_data_structures::fx::FxHashMap;

clippy_utils/src/author.rs renamed to clippy_lints/src/utils/author.rs

@@ -1,6 +1,6 @@
 //! checks for attributes
 
-use crate::{declare_clippy_lint, get_attr};
+use crate::utils::get_attr;
 use rustc_ast::ast::{Attribute, InlineAsmTemplatePiece};
 use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass, LintContext};

clippy_utils/src/inspector.rs renamed to clippy_lints/src/utils/inspector.rs

@@ -1,7 +1,7 @@
 use crate::consts::{constant_simple, Constant};
-use crate::{
-    declare_clippy_lint, is_expn_of, match_def_path, match_qpath, match_type, method_calls, path_to_res, paths,
-    run_lints, snippet, span_lint, span_lint_and_help, span_lint_and_sugg, SpanlessEq,
+use crate::utils::{
+    is_expn_of, match_def_path, match_qpath, match_type, method_calls, path_to_res, paths, run_lints, snippet,
+    span_lint, span_lint_and_help, span_lint_and_sugg, SpanlessEq,
 };
 use if_chain::if_chain;
 use rustc_ast::ast::{Crate as AstCrate, ItemKind, LitKind, NodeId};

clippy_utils/src/internal_lints.rs renamed to clippy_lints/src/utils/internal_lints.rs

@@ -0,0 +1,6 @@
+pub mod author;
+pub mod inspector;
+#[cfg(feature = "internal-lints")]
+pub mod internal_lints;
+
+pub use clippy_utils::*;

clippy_lints/src/utils/mod.rs

@@ -30,7 +30,6 @@ pub mod sym_helper;
 #[allow(clippy::module_name_repetitions)]
 pub mod ast_utils;
 pub mod attrs;
-pub mod author;
 pub mod camel_case;
 pub mod comparisons;
 pub mod conf;
@@ -39,9 +38,6 @@ mod diagnostics;
 pub mod eager_or_lazy;
 pub mod higher;
 mod hir_utils;
-pub mod inspector;
-#[cfg(feature = "internal-lints")]
-pub mod internal_lints;
 pub mod numeric_literal;
 pub mod paths;
 pub mod ptr;
@@ -90,105 +86,6 @@ use smallvec::SmallVec;
 
 use crate::consts::{constant, Constant};
 
-/// Macro used to declare a Clippy lint.
-///
-/// Every lint declaration consists of 4 parts:
-///
-/// 1. The documentation, which is used for the website
-/// 2. The `LINT_NAME`. See [lint naming][lint_naming] on lint naming conventions.
-/// 3. The `lint_level`, which is a mapping from *one* of our lint groups to `Allow`, `Warn` or
-///    `Deny`. The lint level here has nothing to do with what lint groups the lint is a part of.
-/// 4. The `description` that contains a short explanation on what's wrong with code where the
-///    lint is triggered.
-///
-/// Currently the categories `style`, `correctness`, `complexity` and `perf` are enabled by default.
-/// As said in the README.md of this repository, if the lint level mapping changes, please update
-/// README.md.
-///
-/// # Example
-///
-/// ```
-/// #![feature(rustc_private)]
-/// extern crate rustc_session;
-/// use rustc_session::declare_tool_lint;
-/// use clippy_utils::declare_clippy_lint;
-///
-/// declare_clippy_lint! {
-///     /// **What it does:** Checks for ... (describe what the lint matches).
-///     ///
-///     /// **Why is this bad?** Supply the reason for linting the code.
-///     ///
-///     /// **Known problems:** None. (Or describe where it could go wrong.)
-///     ///
-///     /// **Example:**
-///     ///
-///     /// ```rust
-///     /// // Bad
-///     /// Insert a short example of code that triggers the lint
-///     ///
-///     /// // Good
-///     /// Insert a short example of improved code that doesn't trigger the lint
-///     /// ```
-///     pub LINT_NAME,
-///     pedantic,
-///     "description"
-/// }
-/// ```
-/// [lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
-#[macro_export]
-macro_rules! declare_clippy_lint {
-    { $(#[$attr:meta])* pub $name:tt, style, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, correctness, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Deny, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, complexity, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, perf, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, pedantic, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, restriction, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, cargo, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, nursery, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, internal, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
-        }
-    };
-    { $(#[$attr:meta])* pub $name:tt, internal_warn, $description:tt } => {
-        declare_tool_lint! {
-            $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
-        }
-    };
-}
-
 pub fn parse_msrv(msrv: &str, sess: Option<&Session>, span: Option<Span>) -> Option<RustcVersion> {
     if let Ok(version) = RustcVersion::parse(msrv) {
         return Some(version);

clippy_utils/src/lib.rs

@@ -1,4 +1,4 @@
-thread 'rustc' panicked at 'Would you like some help with that?', clippy_utils/src/internal_lints.rs
+thread 'rustc' panicked at 'Would you like some help with that?', clippy_lints/src/utils/internal_lints.rs
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 
 error: internal compiler error: unexpected panic