Jonathan Brouwer e04af73628 Rollup merge of #150586 - intra-doc-assoc-alias, r=GuillaumeGomez ...

rustdoc: Fix intra-doc link bugs involving type aliases and associated items

This PR:
- Add support for linking to fields of variants behind a type alias.
- Correctly resolve links to fields and variants behind a type alias to the alias's version of the docs.
- Refactor some intra-doc links code to make it simpler.
- Add tests for the status quo of linking to associated items behind aliases.

Future steps:
- Nail down the rules of when inherent and trait impls are inlined into an alias's docs, and when impls on the alias appear for the aliased type.
- Adjust the resolutions of intra-doc links, through aliases, to associated items based on these rules.

r? @GuillaumeGomez

2026-01-14 22:29:55 +01:00

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anchors

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assoc

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async

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auto

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auxiliary

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const-generics

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constant

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cross-crate-info

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deref

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doc-cfg

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doctest

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duplicate_impls

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enum

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extern

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generic-associated-types

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impl

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inline_cross

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inline_local

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intra-doc

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intra-doc-crate

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jump-to-def

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macro

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macro-expansion

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merge-cross-crate-info

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notable-trait

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primitive

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private

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reexport

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sidebar

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source-code-pages

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synthetic_auto

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test_option_check

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type-alias

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all.rs

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anon-fn-params.rs

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anonymous-lifetime.rs

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array-links.link_box_generic.html

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array-links.link_box_u32.html

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array-links.link_slice_generic.html

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array-links.link_slice_u32.html

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array-links.rs

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asm-foreign2.rs

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asm-foreign.rs

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asref-for-and-of-local-82465.rs

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attributes-2021-edition.rs

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attributes-inlining-108281.rs

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attributes-re-export-2021-edition.rs

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attributes-re-export.rs

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attributes.rs

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bad-codeblock-syntax.rs

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blank-line-in-doc-block-47197.rs

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bold-tag-101743.rs

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bounds.rs

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cap-lints.rs

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cfg-bool.rs

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cfg-doctest.rs

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check-styled-link.rs

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check.rs

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codeblock-title.rs

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comment-in-doctest.rs

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const-fn-76501.rs

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const-fn-effects.rs

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const-fn.rs

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const-intrinsic.rs

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constructor-imports.rs

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crate-doc-hidden-109695.rs

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crate-version-escape.rs

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crate-version-extra.rs

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crate-version.rs

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cross-crate-links.rs

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custom_code_classes.rs

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decl-line-wrapping-empty-arg-list.decl.html

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decl-line-wrapping-empty-arg-list.rs

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decl-trailing-whitespace.declaration.html

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decl-trailing-whitespace.rs

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deep-structures.rs

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default-theme.rs

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default-trait-method-link.rs

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default-trait-method.rs

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demo-allocator-54478.rs

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deprecated-future-staged-api.rs

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deprecated-future.rs

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deprecated.rs

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deref-methods-19190-foreign-type.rs

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deref-methods-19190-inline.rs

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deref-methods-19190.rs

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deref-mut-35169-2.rs

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deref-mut-35169.rs

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description_default.rs

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description.rs

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display-hidden-items.rs

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doc_auto_cfg_reexports.rs

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doc_auto_cfg.rs

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doc-attr-comment-mix-42760.rs

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doc-attribute.rs

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doc-auto-cfg-public-in-private.rs

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doc-auto-cfg.rs

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doc-hidden-crate.rs

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doc-hidden-method-13698.rs

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doc-on-keyword.rs

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doc-test-attr-18199.rs

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document-hidden-items-15347.rs

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double-hyphen-to-dash.rs

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double-quote-escape.rs

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duplicate-flags.rs

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dyn-compatibility.rs

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early-unindent.rs

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edition-doctest.rs

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edition-flag.rs

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elided-lifetime.rs

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empty-doc-comment.rs

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empty-mod-public.rs

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empty-section.rs

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empty-tuple-struct-118180.rs

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ensure-src-link.rs

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extremely_long_typename.extremely_long_typename.html

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extremely_long_typename.rs

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feature-gate-doc_auto_cfg.rs

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ffi.rs

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file-creation-111249.rs

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files-creation-hidden.rs

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fn-bound.rs

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fn-pointer-arg-name.rs

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fn-sidebar.rs

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fn-type.rs

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footnote-definition-without-blank-line-100638.rs

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footnote-ids.rs

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footnote-in-summary.rs

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footnote-reference-ids.rs

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footnote-reference-in-footnote-def.rs

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force-target-feature.rs

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force-unstable-if-unmarked-106421-not-internal.rs

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force-unstable-if-unmarked-106421.rs

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foreigntype.rs

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glob-shadowing.rs

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heading-levels-89309.rs

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heterogeneous-concat.rs

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hidden-line.rs

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hidden-methods.rs

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hidden-trait-methods-with-document-hidden-items.rs

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hidden-trait-methods.rs

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hide-unstable-trait.rs

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higher-ranked-trait-bounds.rs

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highlight-invalid-rust-12834.rs

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ice-type-error-19181.rs

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import-remapped-paths.rs

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impossible-default.rs

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include_str_cut.rs

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index-page.rs

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infinite-redirection-16265-1.rs

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infinite-redirection-16265-2.rs

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infinite-redirection.rs

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inherent-projections.rs

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inline-default-methods.rs

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inline-rename-34473.rs

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internal.rs

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invalid$crate$name.rs

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item-desc-list-at-start.item-table.html

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item-desc-list-at-start.rs

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keyword.rs

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lifetime-name.rs

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line-breaks.rs

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link-on-path-with-generics.rs

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link-title-escape.rs

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links-in-headings.rs

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logo-class-default.rs

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logo-class-rust.rs

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logo-class.rs

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markdown-60482.rs

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markdown-table-escape-pipe-27862.rs

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masked.rs

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method-list.rs

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mixing-doc-comments-and-attrs.rs

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mixing-doc-comments-and-attrs.S1_top-doc.html

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mixing-doc-comments-and-attrs.S2_top-doc.html

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mixing-doc-comments-and-attrs.S3_top-doc.html

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mod-stackoverflow.rs

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multiple-foreigns-w-same-name-99734.rs

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multiple-import-levels.rs

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multiple-mods-w-same-name-99734.rs

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multiple-mods-w-same-name-doc-inline-83375.rs

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multiple-mods-w-same-name-doc-inline-last-item-83375.rs

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multiple-structs-w-same-name-99221.rs

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mut-params.rs

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namespaces.rs

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nested-items-issue-111415.rs

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nested-modules.rs

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no-run-still-checks-lints.rs

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no-stack-overflow-25295.rs

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no-unit-struct-field.rs

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non_lifetime_binders.rs

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nul-error.rs

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playground-arg.rs

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playground-empty.rs

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playground-none.rs

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playground-syntax-error.rs

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playground.rs

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process-termination.rs

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pub-method.rs

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pub-use-loop-107350.rs

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pub-use-root-path-95873.rs

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range-arg-pattern.rs

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raw-ident-eliminate-r-hashtag.rs

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read-more-unneeded.rs

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recursion1.rs

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recursion2.rs

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recursion3.rs

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redirect-map-empty.rs

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redirect-map.rs

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redirect-rename.rs

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redirect.rs

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remove-duplicates.rs

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remove-url-from-headings.rs

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repr.rs

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resolve-ice-124363.rs

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return-type-notation.rs

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safe-intrinsic.rs

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sanitizer-option.rs

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search-index-summaries.rs

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search-index.rs

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short-docblock-codeblock.rs

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short-docblock.rs

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short-line.md

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sized_trait.rs

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slice-links.link_box_generic.html

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slice-links.link_box_u32.html

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slice-links.link_slice_generic.html

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slice-links.link_slice_u32.html

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slice-links.rs

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smart-punct.rs

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smoke.rs

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sort-53812.rs

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sort-modules-by-appearance.rs

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stability.rs

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staged-api-deprecated-unstable-32374.rs

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staged-api-feature-issue-27759.rs

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static-root-path.rs

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static.rs

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strip-block-doc-comments-stars.docblock.html

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strip-block-doc-comments-stars.rs

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strip-priv-imports-pass-27104.rs

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struct-arg-pattern.rs

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struct-field.rs

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structfields.rs

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summary-codeblock-31899.rs

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summary-header-46377.rs

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summary-reference-link-30366.rs

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tab_title.rs

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table-in-docblock.rs

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target-feature.rs

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task-lists.rs

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test-lists.rs

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test-parens.rs

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test-strikethrough.rs

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thread-local-src.rs

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titles.rs

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toggle-item-contents.rs

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toggle-method.rs

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toggle-trait-fn.rs

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trait-aliases.rs

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trait-item-info.rs

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trait-self-link.rs

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trait-src-link.rs

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trait-visibility.rs

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traits-in-bodies.rs

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tuple-struct-fields-doc.rs

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tuple-struct-where-clause-34928.rs

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tuples.link1_i32.html

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tuples.link1_t.html

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tuples.link2_i32.html

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tuples.link2_t.html

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tuples.link2_tu.html

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tuples.link_unit.html

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tuples.rs

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type-layout-flag-required.rs

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type-layout.rs

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typedef-inner-variants-lazy_type_alias.rs

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typedef-inner-variants.rs

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typedef.rs

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underscore-import-61592.rs

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unindent.md

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unindent.rs

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union-fields-html.rs

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union.rs

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unit-return.rs

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unsafe-binder.rs

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use-attr.rs

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useless_lifetime_bound.rs

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variadic.rs

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viewpath-rename.rs

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viewpath-self.rs

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visibility.rs

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where-clause-order.rs

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where-sized.rs

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where.alpha_trait_decl.html

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where.charlie_fn_decl.html

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where.golf_type_alias_decl.html

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where.rs

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where.SWhere_Echo_impl.html

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where.SWhere_Simd_item-decl.html

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where.SWhere_TraitWhere_item-decl.html

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whitespace-after-where-clause.enum2.html

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whitespace-after-where-clause.enum.html

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whitespace-after-where-clause.rs

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whitespace-after-where-clause.struct2.html

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whitespace-after-where-clause.trait2.html

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whitespace-after-where-clause.union2.html

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without-redirect.rs

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wrapping.rs

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