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102 lines
4.8 KiB
Markdown
102 lines
4.8 KiB
Markdown
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# Luau Language Server
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An implementation ofa language server for the [Luau](https://github.com/Roblox/luau) programming language.
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## Getting Started
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Install the extension from the VSCode Marketplace or OpenVSX Registry:
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- VSCode Marketplace: https://marketplace.visualstudio.com/items?itemName=JohnnyMorganz.luau-lsp
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- OpenVSX Registry: https://open-vsx.org/extension/JohnnyMorganz/luau-lsp
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Alternatively, check out [Getting Started for Language Server Clients](https://github.com/JohnnyMorganz/luau-lsp/blob/main/editors/README.md)
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to setup your own client for a different editor
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### For General Users
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The language server should be immediately usable for general Luau code after installation.
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String require support is provided for module paths, using `require("module")`.
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Type definitions can be provided by configuring `luau-lsp.types.definitionFiles`, with corresponding
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documentation added using `luau-lsp.types.documentationFiles`.
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If you use Luau in a different environment and are interested in using the language server, or
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looking for any specific features, please get in touch!
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### For Rojo Users (requires `v7.3.0+`)
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By default, the latest Roblox type definitions and documentation are preloaded out of the box.
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This can be disabled by configuring `luau-lsp.platform.type`.
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The language server uses Rojo-style sourcemaps to resolve DataModel instance trees for intellisense.
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This is done by running `rojo sourcemap --watch default.project.json --output sourcemap.json`.
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The server listens to changes of a `sourcemap.json` file present at the workspace root. It is recommended to add this
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file to your `.gitignore`.
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The following settings are configurable for sourcemap generation:
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- `luau-lsp.sourcemap.enabled`: Whether sourcemap support is enabled (default: on)
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- `luau-lsp.sourcemap.autogenerate`: Whether sourcemaps are automatically generated by the client. If disabled, the server will listen to manual changes to a `sourcemap.json` file (default: on)
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- `luau-lsp.sourcemap.rojoProjectFile`: What project file to use (default: `default.project.json`)
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- `luau-lsp.sourcemap.includeNonScripts`: Whether to include non script instances in the sourcemap. May be disabled for expensive DataModels (default: on)
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- `luau-lsp.sourcemap.sourcemapFile`: What sourcemap file to use (default: `sourcemap.json`)
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If you do not use Rojo, you can still use the Luau Language Server, you just need to manually generate a `sourcemap.json`
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file for your particular project layout.
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> Note: in the diagnostics type checker, the types for DataModel (DM) instances will resolve to `any`. This is a current limitation to reduce false positives.
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> However, autocomplete and hover intellisense will correctly resolve the DM type.
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> To enable this mode for diagnostics, set `luau-lsp.diagnostics.strictDatamodelTypes` (off by default).
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> [Read more](https://github.com/JohnnyMorganz/luau-lsp/issues/83#issuecomment-1192865024).
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**A companion Studio plugin is available to provide DataModel information for Instances which are not part of your Rojo build / filetree: [Plugin Marketplace](https://www.roblox.com/library/10913122509/Luau-Language-Server-Companion)**
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## Standalone
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The tool can run standalone, similar to [`luau-analyze`](https://github.com/JohnnyMorganz/luau-analyze-rojo), to provide type and lint warnings in CI, with full Rojo resolution and API types support.
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The entry point for the analysis tool is `luau-lsp analyze`.
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Install the binary and run `luau-lsp --help` for more information.
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## Supported Features
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- [x] Diagnostics (incl. type errors)
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- [x] Autocompletion
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- [x] Hover
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- [x] Signature Help
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- [x] Go To Definition
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- [x] Go To Type Definition
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- [x] Find References
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- [x] Document Link
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- [x] Document Symbol
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- [x] Color Provider
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- [x] Rename
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- [x] Semantic Tokens
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- [x] Inlay Hints
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- [x] Documentation Comments ([Moonwave Style](https://github.com/evaera/moonwave) - supporting both `--- comment` and `--[=[ comment ]=]`, but must be next to statement)
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- [x] Code Actions
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- [x] Workspace Symbols
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- [x] Folding Range
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- [x] Call Hierarchy
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The following are extra features defined in the LSP specification, but most likely do not apply to Luau or are not necessary.
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They can be investigated at a later time:
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- [ ] Go To Declaration (do not apply)
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- [ ] Go To Implementation (do not apply)
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- [ ] Code Lens (not necessary)
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- [ ] Document Highlight (not necessary - editor highlighting is sufficient)
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- [ ] Selection Range (not necessary - editor selection is sufficient)
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- [ ] Inline Value (applies for debuggers only)
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- [ ] Moniker
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- [ ] Formatting (see [stylua](https://github.com/JohnnyMorganz/StyLua))
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- [ ] Type Hierarchy (Luau currently does not provide any [public] ways to define type hierarchies)
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## Build From Source
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```sh
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mkdir build && cd build
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cmake .. -DCMAKE_BUILD_TYPE=Release
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cmake --build . --target Luau.LanguageServer.CLI --config Release
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```
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