Simplify included import items handling

Author: GuillaumeGomez

src/librustdoc/clean/inline.rs

@@ -498,7 +498,7 @@ fn build_module(cx: &DocContext<'_>, did: DefId, visited: &mut FxHashSet<DefId>)
                         visibility: clean::Public,
                         stability: None,
                         deprecation: None,
-                        inner: clean::ImportItem(clean::Import::Simple(
+                        inner: clean::ImportItem(clean::Import::new_simple(
                             item.ident.to_string(),
                             clean::ImportSource {
                                 path: clean::Path {
@@ -514,7 +514,7 @@ fn build_module(cx: &DocContext<'_>, did: DefId, visited: &mut FxHashSet<DefId>)
                                 },
                                 did: None,
                             },
-                            false,
+                            true,
                         )),
                     });
                 } else if let Some(i) =

src/librustdoc/clean/mod.rs

@@ -2269,12 +2269,12 @@ impl Clean<Vec<Item>> for doctree::Import<'_> {
                         visibility: self.vis.clean(cx),
                         stability: None,
                         deprecation: None,
-                        inner: ImportItem(Import::Glob(resolve_use_source(cx, path), false)),
+                        inner: ImportItem(Import::new_glob(resolve_use_source(cx, path), false)),
                     });
                     return items;
                 }
             }
-            Import::Glob(resolve_use_source(cx, path), true)
+            Import::new_glob(resolve_use_source(cx, path), true)
         } else {
             let name = self.name;
             if !please_inline {
@@ -2297,9 +2297,6 @@ impl Clean<Vec<Item>> for doctree::Import<'_> {
                     Some(self.attrs),
                     &mut visited,
                 ) {
-                    // In case this is a macro, we don't want to show the reexport, only the macro
-                    // itself.
-                    let is_macro = matches!(path.res, Res::Def(DefKind::Macro(_), _));
                     items.push(Item {
                         name: None,
                         attrs: self.attrs.clean(cx),
@@ -2308,16 +2305,16 @@ impl Clean<Vec<Item>> for doctree::Import<'_> {
                         visibility: self.vis.clean(cx),
                         stability: None,
                         deprecation: None,
-                        inner: ImportItem(Import::Simple(
+                        inner: ImportItem(Import::new_simple(
                             self.name.clean(cx),
                             resolve_use_source(cx, path),
-                            is_macro,
+                            false,
                         )),
                     });
                     return items;
                 }
             }
-            Import::Simple(name.clean(cx), resolve_use_source(cx, path), false)
+            Import::new_simple(name.clean(cx), resolve_use_source(cx, path), true)
         };
 
         vec![Item {

src/librustdoc/clean/types.rs

@@ -177,6 +177,7 @@ impl Item {
     pub fn is_stripped(&self) -> bool {
         match self.inner {
             StrippedItem(..) => true,
+            ImportItem(ref i) => !i.should_be_displayed,
             _ => false,
         }
     }
@@ -1653,24 +1654,30 @@ pub struct Impl {
 }
 
 #[derive(Clone, Debug)]
-pub enum Import {
-    // use source as str;
-    // The bool indicates whether it imports a macro or not.
-    Simple(String, ImportSource, bool),
-    // use source::*;
-    // The bool indicates whether this is from an import.
-    Glob(ImportSource, bool),
+pub struct Import {
+    pub kind: ImportKind,
+    pub source: ImportSource,
+    pub should_be_displayed: bool,
 }
 
 impl Import {
-    pub fn should_be_displayed(&self) -> bool {
-        match *self {
-            Self::Simple(_, _, is_macro) => !is_macro,
-            Self::Glob(_, is_from_import) => is_from_import,
-        }
+    pub fn new_simple(name: String, source: ImportSource, should_be_displayed: bool) -> Self {
+        Self { kind: ImportKind::Simple(name), source, should_be_displayed }
+    }
+
+    pub fn new_glob(source: ImportSource, should_be_displayed: bool) -> Self {
+        Self { kind: ImportKind::Glob, source, should_be_displayed }
     }
 }
 
+#[derive(Clone, Debug)]
+pub enum ImportKind {
+    // use source as str;
+    Simple(String),
+    // use source::*;
+    Glob,
+}
+
 #[derive(Clone, Debug)]
 pub struct ImportSource {
     pub path: Path,

src/librustdoc/html/format.rs

@@ -1149,19 +1149,19 @@ impl PrintWithSpace for hir::Mutability {
 
 impl clean::Import {
     crate fn print(&self) -> impl fmt::Display + '_ {
-        display_fn(move |f| match *self {
-            clean::Import::Simple(ref name, ref src, _) => {
-                if *name == src.path.last_name() {
-                    write!(f, "use {};", src.print())
+        display_fn(move |f| match self.kind {
+            clean::ImportKind::Simple(ref name) => {
+                if *name == self.source.path.last_name() {
+                    write!(f, "use {};", self.source.print())
                 } else {
-                    write!(f, "use {} as {};", src.print(), *name)
+                    write!(f, "use {} as {};", self.source.print(), *name)
                 }
             }
-            clean::Import::Glob(ref src, _) => {
-                if src.path.segments.is_empty() {
+            clean::ImportKind::Glob => {
+                if self.source.path.segments.is_empty() {
                     write!(f, "use *;")
                 } else {
-                    write!(f, "use {}::*;", src.print())
+                    write!(f, "use {}::*;", self.source.print())
                 }
             }
         })

src/librustdoc/html/render/mod.rs

@@ -2074,14 +2074,12 @@ fn item_module(w: &mut Buffer, cx: &Context, item: &clean::Item, items: &[clean:
             }
 
             clean::ImportItem(ref import) => {
-                if import.should_be_displayed() {
-                    write!(
-                        w,
-                        "<tr><td><code>{}{}</code></td></tr>",
-                        myitem.visibility.print_with_space(),
-                        import.print()
-                    );
-                }
+                write!(
+                    w,
+                    "<tr><td><code>{}{}</code></td></tr>",
+                    myitem.visibility.print_with_space(),
+                    import.print()
+                );
             }
 
             _ => {
@@ -4440,8 +4438,9 @@ fn item_ty_to_strs(ty: &ItemType) -> (&'static str, &'static str) {
 fn sidebar_module(buf: &mut Buffer, items: &[clean::Item]) {
     let mut sidebar = String::new();
 
-    if items.iter().any(|it| it.type_() == ItemType::ExternCrate || it.type_() == ItemType::Import)
-    {
+    if items.iter().any(|it| {
+        it.type_() == ItemType::ExternCrate || (it.type_() == ItemType::Import && !it.is_stripped())
+    }) {
         sidebar.push_str(&format!(
             "<li><a href=\"#{id}\">{name}</a></li>",
             id = "reexports",

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -758,7 +758,7 @@ impl<'a, 'tcx> DocFolder for LinkCollector<'a, 'tcx> {
                 debug!("ignoring extern crate item {:?}", item.def_id);
                 return self.fold_item_recur(item);
             }
-            ImportItem(Import::Simple(ref name, ..)) => Some(name.clone()),
+            ImportItem(Import { kind: ImportKind::Simple(ref name, ..), .. }) => Some(name.clone()),
             MacroItem(..) => None,
             _ => item.name.clone(),
         };

src/test/rustdoc/reexport-check.rs

@@ -0,0 +1,11 @@
+#![crate_name = "foo"]
+
+// @!has 'foo/index.html' '//code' 'pub use self::i32;'
+// @has 'foo/index.html' '//tr[@class="module-item"]' 'i32'
+// @has 'foo/i32/index.html'
+pub use std::i32;
+// @!has 'foo/index.html' '//code' 'pub use self::string::String;'
+// @has 'foo/index.html' '//tr[@class="module-item"]' 'String'
+pub use std::string::String;
+// @!has 'foo/index.html' '//code' 'pub use self::string::*;'
+pub use std::string::*;