spec - language-server-rust.rq

Idea	File	Status	Summary	Katz
language_server_rust	reqlan rq/extension/language/support/language-server-rust.rq	in-progress	A Rust binary replaces the Langium language-server process. The extension launches `reqlan-lsp` over stdio. Open `.rq` buffers parse with [parser_rust]. The open sequence is ["open-file-sequencing.rq".open_file_algorithm]. Workspace names and rename targets come from the ideas index under [application_memory]. Inbound hints wait for the host snapshot of that index. The inbound inlay hover is markdown. It lists each referencer as a file link. An idea hover shows styled idea content when ["../syntax/features-syntax.rq".idea_content_tooltip] is on. A closed file has no retained syntax tree. Go-to-definition cost is ["../syntax/features-syntax-highlighting.rq".reference_goto_definition_speed]. When the engine is `rust`, the server also serves `rq:[…]` document links, go-to-definition, and missing-idea diagnostics in non- `.rq` comments. One resolution supplies the link, the definition target, and the underline. The host strips file document links; Ctrl + click uses definition ( ["../syntax/features-syntax-highlighting.rq".editor_reference_activation] ). The host serves those links when the engine is `node`. Host commands prefer LSP custom requests, napi extract, and the ideas index. Move / delete planners still use Langium until index-backed planners land. The setting `reqlan.languageServer.engine` selects the binary. The default is `rust`. `node` remains only when the setting says so, or when the binary is not on disk yet. A local extension build compiles this binary with the napi addon ( [extension_host_native_stage] ). The extension launches `bin/reqlan-lsp`, else that release build. It never launches a debug build, because a debug build is slow and the extension build does not refresh it. Code actions match ["../vsc-primitives.rq".code_actions]: ignore, create below, import fixes, search or wrap, idea move and delete, and barrel page. Attribute and name catalogs drive completion. Rename and find-references use open buffers plus the ideas index. Inlay hints honour `reqlan.referencesInlayHints.enabled` and the host inbound snapshot. An import link uses the parser token span ( [import_from] ). The path links to the file. An imported idea name and its alias each link to that declaration. A namespace reference links the alias and the idea as separate names. A missing leaf reports an unresolved idea on that name. Related: [language_server], [grammar_and_parser], [analytical_rust_port], [vsix_export].	0.580

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