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Implement suggestions from code review.
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@ -70,35 +70,36 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
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);
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top_level_module.is_crate = true;
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// Attach the crate's exported macros to the top-level module.
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// In the case of macros 2.0 (`pub macro`), and for built-in `derive`s as well
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// (_e.g._, `Copy`), these are wrongly bundled in there too, so we need to fix that by
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// In the case of macros 2.0 (`pub macro`), and for built-in `derive`s or attributes as
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// well (_e.g._, `Copy`), these are wrongly bundled in there too, so we need to fix that by
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// moving them back to their correct locations.
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krate.exported_macros.iter().for_each(|def| {
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macro_rules! try_some {($($body:tt)*) => ({
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fn fn_once<R, F: FnOnce() -> R> (f: F) -> F { f }
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fn_once(|| Some({ $($body)* }))()
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})}
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// In the case of dummy items, some of the following operations may fail. We propagate
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// that within a `?`-capturing block, so as to fallback to the basic behavior.
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let containing_module_of_def = try_some! {
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/// A return value of `None` signifies a fallback to the default behavior (locating
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/// the macro at the root of the crate).
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fn containing_mod_of_macro<'module, 'hir>(
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def: &'_ rustc_hir::MacroDef<'_>,
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tcx: TyCtxt<'_>,
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top_level_module: &'module mut Module<'hir>,
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) -> Option<&'module mut Module<'hir>> {
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// The `def` of a macro in `exported_macros` should correspond to either:
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// - a `#[macro-export] macro_rules!` macro,
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// - a built-in `derive` macro such as the ones in `::core`,
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// - a built-in `derive` (or attribute) macro such as the ones in `::core`,
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// - a `pub macro`.
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// Only the last two need to be fixed, thus:
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if def.ast.macro_rules {
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return None;
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}
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let macro_parent_module = self.cx.tcx.def_path({
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/* Because of #77828 we cannot do the simpler:
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let macro_parent_module = tcx.def_path(tcx.parent_module(def.hir_id).to_def_id());
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// and instead have to do: */
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let macro_parent_module = tcx.def_path({
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use rustc_middle::ty::DefIdTree;
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self.cx
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.tcx
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/* Because of #77828 we cannot do the simpler:
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.parent_module(def.hir_id).to_def_id()
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// and instead have to do: */
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.parent(self.cx.tcx.hir().local_def_id(def.hir_id).to_def_id())?
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tcx.parent(tcx.hir().local_def_id(def.hir_id).to_def_id())?
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});
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let mut cur_mod = &mut top_level_module;
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// HACK: rustdoc has no way to lookup `doctree::Module`s by their HirId. Instead,
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// lookup the module by its name, by looking at each path segment one at a time.
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// WARNING: this will probably break in the presence of re-exports or shadowing.
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let mut cur_mod = top_level_module;
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for path_segment in macro_parent_module.data {
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let path_segment = path_segment.to_string();
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cur_mod = cur_mod.mods.iter_mut().find(|module| {
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@ -108,9 +109,10 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
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)
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})?;
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}
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cur_mod
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};
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if let Some(module) = containing_module_of_def {
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Some(cur_mod)
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}
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if let Some(module) = containing_mod_of_macro(def, self.cx.tcx, &mut top_level_module) {
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&mut module.macros
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} else {
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&mut top_level_module.macros
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@ -1,9 +1,17 @@
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//! See issue #74355
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#![feature(decl_macro, no_core, rustc_attrs)]
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#![crate_name = "krate"]
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#![feature(decl_macro)]
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#![no_core]
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// @has krate/some_module/macro.my_macro.html
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pub mod some_module {
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//
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pub mod inner {
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// @has krate/inner/macro.my_macro.html
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pub macro my_macro() {}
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// @has krate/inner/macro.test.html
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#[rustc_builtin_macro]
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pub macro test($item:item) {}
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// @has krate/inner/macro.Clone.html
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#[rustc_builtin_macro]
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pub macro Clone($item:item) {}
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}
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