rustdoc: Don't show hidden trait methods

By skipping trait items whose attributes include `hidden`, we void
showing
such trait methods.

2 files changed, 60 insertions, 0 deletions

diff --git a/src/test/rustdoc/hidden-trait-methods-with-document-hidden-items.rs b/src/test/rustdoc/hidden-trait-methods-with-document-hidden-items.rs
new file mode 100644
index 00000000000..95b3e9b6523
--- /dev/null
+++ b/src/test/rustdoc/hidden-trait-methods-with-document-hidden-items.rs
@@ -0,0 +1,31 @@
+// compile-flags: -Z unstable-options --document-hidden-items
+
+// test for trait methods with `doc(hidden)` with `--document-hidden-items` passed.
+#![crate_name = "foo"]
+
+// @has foo/trait.Trait.html
+// @has - '//*[@id="associatedtype.Foo"]' 'type Foo'
+// @has - '//*[@id="associatedtype.Bar"]' 'type Bar'
+// @has - '//*[@id="tymethod.f"]' 'fn f()'
+// @has - '//*[@id="tymethod.g"]' 'fn g()'
+pub trait Trait {
+    #[doc(hidden)]
+    type Foo;
+    type Bar;
+    #[doc(hidden)]
+    fn f();
+    fn g();
+}
+
+// @has foo/struct.S.html
+// @has - '//*[@id="associatedtype.Foo"]' 'type Foo'
+// @has - '//*[@id="associatedtype.Bar"]' 'type Bar'
+// @has - '//*[@id="method.f"]' 'fn f()'
+// @has - '//*[@id="method.g"]' 'fn g()'
+pub struct S;
+impl Trait for S {
+    type Foo = ();
+    type Bar = ();
+    fn f() {}
+    fn g() {}
+}
diff --git a/src/test/rustdoc/hidden-trait-methods.rs b/src/test/rustdoc/hidden-trait-methods.rs
new file mode 100644
index 00000000000..e924ba7d0ac
--- /dev/null
+++ b/src/test/rustdoc/hidden-trait-methods.rs
@@ -0,0 +1,29 @@
+// test for trait methods with `doc(hidden)`.
+#![crate_name = "foo"]
+
+// @has foo/trait.Trait.html
+// @!has - '//*[@id="associatedtype.Foo"]' 'type Foo'
+// @has - '//*[@id="associatedtype.Bar"]' 'type Bar'
+// @!has - '//*[@id="tymethod.f"]' 'fn f()'
+// @has - '//*[@id="tymethod.g"]' 'fn g()'
+pub trait Trait {
+    #[doc(hidden)]
+    type Foo;
+    type Bar;
+    #[doc(hidden)]
+    fn f();
+    fn g();
+}
+
+// @has foo/struct.S.html
+// @!has - '//*[@id="associatedtype.Foo"]' 'type Foo'
+// @has - '//*[@id="associatedtype.Bar"]' 'type Bar'
+// @!has - '//*[@id="method.f"]' 'fn f()'
+// @has - '//*[@id="method.g"]' 'fn g()'
+pub struct S;
+impl Trait for S {
+    type Foo = ();
+    type Bar = ();
+    fn f() {}
+    fn g() {}
+}