Fix visibility warnings

crates/hir_ty/src/diagnostics/pattern.rs

@@ -4,7 +4,7 @@
 mod deconstruct_pat;
 // TODO: find a better place for this?
 mod pat_util;
-pub mod usefulness;
+pub(crate) mod usefulness;
 
 use hir_def::{body::Body, EnumVariantId, LocalFieldId, VariantId};
 use la_arena::Idx;
@@ -13,7 +13,7 @@ use crate::{db::HirDatabase, AdtId, InferenceResult, Interner, Substitution, Ty,
 
 use self::pat_util::EnumerateAndAdjustIterator;
 
-pub type PatId = Idx<Pat>;
+pub(crate) type PatId = Idx<Pat>;
 
 #[derive(Clone, Debug)]
 pub(crate) enum PatternError {
@@ -21,15 +21,15 @@ pub(crate) enum PatternError {
 }
 
 #[derive(Clone, Debug, PartialEq)]
-pub struct FieldPat {
-    pub field: LocalFieldId,
-    pub pattern: Pat,
+pub(crate) struct FieldPat {
+    pub(crate) field: LocalFieldId,
+    pub(crate) pattern: Pat,
 }
 
 #[derive(Clone, Debug, PartialEq)]
-pub struct Pat {
-    pub ty: Ty,
-    pub kind: Box<PatKind>,
+pub(crate) struct Pat {
+    pub(crate) ty: Ty,
+    pub(crate) kind: Box<PatKind>,
 }
 
 impl Pat {
@@ -39,7 +39,7 @@ impl Pat {
 }
 
 #[derive(Clone, Debug, PartialEq)]
-pub enum PatKind {
+pub(crate) enum PatKind {
     Wild,
 
     /// `x`, `ref x`, `x @ P`, etc.

crates/hir_ty/src/diagnostics/pattern/pat_util.rs

@@ -1,6 +1,6 @@
 use std::iter::{Enumerate, ExactSizeIterator};
 
-pub struct EnumerateAndAdjust<I> {
+pub(crate) struct EnumerateAndAdjust<I> {
     enumerate: Enumerate<I>,
     gap_pos: usize,
     gap_len: usize,
@@ -23,7 +23,7 @@ where
     }
 }
 
-pub trait EnumerateAndAdjustIterator {
+pub(crate) trait EnumerateAndAdjustIterator {
     fn enumerate_and_adjust(
         self,
         expected_len: usize,

crates/hir_ty/src/diagnostics/pattern/usefulness.rs

@@ -906,7 +906,7 @@ mod helper {
     /// [this comment]: https://github.com/rust-lang/rust/issues/34511#issuecomment-373423999
     // FIXME(eddyb) false positive, the lifetime parameter is "phantom" but needed.
     #[allow(unused_lifetimes)]
-    pub trait Captures<'a> {}
+    pub(crate) trait Captures<'a> {}
 
     impl<'a, T: ?Sized> Captures<'a> for T {}
 }