Add configuration for raw pointer heuristic

Author: Qwaz

clippy_lints/src/lib.rs

@@ -535,7 +535,8 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
     store.register_late_pass(move || Box::new(feature_name::FeatureName));
     store.register_late_pass(move || Box::new(iter_not_returning_iterator::IterNotReturningIterator));
     store.register_late_pass(move || Box::new(if_then_panic::IfThenPanic));
-    store.register_late_pass(|| Box::new(non_send_field_in_send_ty::NonSendFieldInSendTy));
+    let enable_raw_pointer_heuristic = conf.enable_raw_pointer_heuristic;
+    store.register_late_pass(move || Box::new(non_send_field_in_send_ty::NonSendFieldInSendTy::new(enable_raw_pointer_heuristic)));
 }
 
 #[rustfmt::skip]

clippy_lints/src/non_send_field_in_send_ty.rs

@@ -6,7 +6,7 @@ use rustc_hir::def_id::DefId;
 use rustc_hir::{Item, ItemKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::{self, subst::GenericArgKind, Ty};
-use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::symbol::Symbol;
 use rustc_span::{sym, Span};
 
@@ -48,10 +48,29 @@ declare_clippy_lint! {
     "there is field that does not implement `Send` in a `Send` struct"
 }
 
-declare_lint_pass!(NonSendFieldInSendTy => [NON_SEND_FIELD_IN_SEND_TY]);
+#[derive(Copy, Clone)]
+pub struct NonSendFieldInSendTy {
+    enable_raw_pointer_heuristic: bool,
+}
+
+impl NonSendFieldInSendTy {
+    pub fn new(enable_raw_pointer_heuristic: bool) -> Self {
+        Self {
+            enable_raw_pointer_heuristic,
+        }
+    }
+}
+
+impl_lint_pass!(NonSendFieldInSendTy => [NON_SEND_FIELD_IN_SEND_TY]);
 
 impl<'tcx> LateLintPass<'tcx> for NonSendFieldInSendTy {
     fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) {
+        let ty_allowed_in_send = if self.enable_raw_pointer_heuristic {
+            ty_allowed_with_raw_pointer_heuristic
+        } else {
+            ty_implements_send_or_copy
+        };
+
         // Checks if we are in `Send` impl item.
         // We start from `Send` impl instead of `check_field_def()` because
         // single `AdtDef` may have multiple `Send` impls due to generic
@@ -157,13 +176,6 @@ fn collect_generic_params<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Vec<Ty<
         .collect()
 }
 
-/// Determine if the given type is allowed in an ADT that implements `Send`
-fn ty_allowed_in_send(cx: &LateContext<'tcx>, ty: Ty<'tcx>, send_trait: DefId) -> bool {
-    // TODO: check configuration and call `ty_implements_send_or_copy()` or
-    // `ty_allowed_with_raw_pointer_heuristic()`
-    ty_allowed_with_raw_pointer_heuristic(cx, ty, send_trait)
-}
-
 /// Determine if the given type is `Send` or `Copy`
 fn ty_implements_send_or_copy(cx: &LateContext<'tcx>, ty: Ty<'tcx>, send_trait: DefId) -> bool {
     implements_trait(cx, ty, send_trait, &[]) || is_copy(cx, ty)

clippy_lints/src/utils/conf.rs

@@ -284,6 +284,10 @@ define_Conf! {
     ///
     /// The list of unicode scripts allowed to be used in the scope.
     (allowed_scripts: Vec<String> = vec!["Latin".to_string()]),
+    /// Lint: NON_SEND_FIELD_IN_SEND_TY.
+    ///
+    /// Whether to apply the raw pointer heuristic in `non_send_field_in_send_ty` lint.
+    (enable_raw_pointer_heuristic: bool = true),
 }
 
 /// Search for the configuration file.

tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr

@@ -1,4 +1,4 @@
-error: error reading Clippy's configuration file `$DIR/clippy.toml`: unknown field `foobar`, expected one of `avoid-breaking-exported-api`, `msrv`, `blacklisted-names`, `cognitive-complexity-threshold`, `cyclomatic-complexity-threshold`, `doc-valid-idents`, `too-many-arguments-threshold`, `type-complexity-threshold`, `single-char-binding-names-threshold`, `too-large-for-stack`, `enum-variant-name-threshold`, `enum-variant-size-threshold`, `verbose-bit-mask-threshold`, `literal-representation-threshold`, `trivial-copy-size-limit`, `pass-by-value-size-limit`, `too-many-lines-threshold`, `array-size-threshold`, `vec-box-size-threshold`, `max-trait-bounds`, `max-struct-bools`, `max-fn-params-bools`, `warn-on-all-wildcard-imports`, `disallowed-methods`, `disallowed-types`, `unreadable-literal-lint-fractions`, `upper-case-acronyms-aggressive`, `cargo-ignore-publish`, `standard-macro-braces`, `enforced-import-renames`, `allowed-scripts`, `third-party` at line 5 column 1
+error: error reading Clippy's configuration file `$DIR/clippy.toml`: unknown field `foobar`, expected one of `avoid-breaking-exported-api`, `msrv`, `blacklisted-names`, `cognitive-complexity-threshold`, `cyclomatic-complexity-threshold`, `doc-valid-idents`, `too-many-arguments-threshold`, `type-complexity-threshold`, `single-char-binding-names-threshold`, `too-large-for-stack`, `enum-variant-name-threshold`, `enum-variant-size-threshold`, `verbose-bit-mask-threshold`, `literal-representation-threshold`, `trivial-copy-size-limit`, `pass-by-value-size-limit`, `too-many-lines-threshold`, `array-size-threshold`, `vec-box-size-threshold`, `max-trait-bounds`, `max-struct-bools`, `max-fn-params-bools`, `warn-on-all-wildcard-imports`, `disallowed-methods`, `disallowed-types`, `unreadable-literal-lint-fractions`, `upper-case-acronyms-aggressive`, `cargo-ignore-publish`, `standard-macro-braces`, `enforced-import-renames`, `allowed-scripts`, `enable-raw-pointer-heuristic`, `third-party` at line 5 column 1
 
 error: aborting due to previous error