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Diffstat (limited to 'book/src/guides/adding_languages.md')
| -rw-r--r-- | book/src/guides/adding_languages.md | 67 |
1 files changed, 7 insertions, 60 deletions
diff --git a/book/src/guides/adding_languages.md b/book/src/guides/adding_languages.md index 0cd6c27b..5be7a264 100644 --- a/book/src/guides/adding_languages.md +++ b/book/src/guides/adding_languages.md @@ -2,40 +2,8 @@ ## Language configuration -To add a new language, you need to add a `language` entry to the -[`languages.toml`][languages.toml] found in the root of the repository; -this `languages.toml` file is included at compilation time, and is -distinct from the `languages.toml` file in the user's [configuration -directory](../configuration.md). - -```toml -[[language]] -name = "mylang" -scope = "scope.mylang" -injection-regex = "^mylang$" -file-types = ["mylang", "myl"] -comment-token = "#" -indent = { tab-width = 2, unit = " " } -language-server = { command = "mylang-lsp", args = ["--stdio"] } -``` - -These are the available keys and descriptions for the file. - -| Key | Description | -| ---- | ----------- | -| `name` | The name of the language | -| `scope` | A string like `source.js` that identifies the language. Currently, we strive to match the scope names used by popular TextMate grammars and by the Linguist library. Usually `source.<name>` or `text.<name>` in case of markup languages | -| `injection-regex` | regex pattern that will be tested against a language name in order to determine whether this language should be used for a potential [language injection][treesitter-language-injection] site. | -| `file-types` | The filetypes of the language, for example `["yml", "yaml"]`. Extensions and full file names are supported. | -| `shebangs` | The interpreters from the shebang line, for example `["sh", "bash"]` | -| `roots` | A set of marker files to look for when trying to find the workspace root. For example `Cargo.lock`, `yarn.lock` | -| `auto-format` | Whether to autoformat this language when saving | -| `diagnostic-severity` | Minimal severity of diagnostic for it to be displayed. (Allowed values: `Error`, `Warning`, `Info`, `Hint`) | -| `comment-token` | The token to use as a comment-token | -| `indent` | The indent to use. Has sub keys `tab-width` and `unit` | -| `language-server` | The Language Server to run. Has sub keys `command` and `args` | -| `config` | Language Server configuration | -| `grammar` | The tree-sitter grammar to use (defaults to the value of `name`) | +To add a new language, you need to add a `[[language]]` entry to the +`languages.toml` (see the [language configuration section]). When adding a new language or Language Server configuration for an existing language, run `cargo xtask docgen` to add the new configuration to the @@ -45,32 +13,12 @@ When adding a Language Server configuration, be sure to update the ## Grammar configuration -If a tree-sitter grammar is available for the language, add a new `grammar` +If a tree-sitter grammar is available for the language, add a new `[[grammar]]` entry to `languages.toml`. -```toml -[[grammar]] -name = "mylang" -source = { git = "https://github.com/example/mylang", rev = "a250c4582510ff34767ec3b7dcdd3c24e8c8aa68" } -``` - -Grammar configuration takes these keys: - -| Key | Description | -| --- | ----------- | -| `name` | The name of the tree-sitter grammar | -| `source` | The method of fetching the grammar - a table with a schema defined below | - -Where `source` is a table with either these keys when using a grammar from a -git repository: - -| Key | Description | -| --- | ----------- | -| `git` | A git remote URL from which the grammar should be cloned | -| `rev` | The revision (commit hash or tag) which should be fetched | -| `subpath` | A path within the grammar directory which should be built. Some grammar repositories host multiple grammars (for example `tree-sitter-typescript` and `tree-sitter-ocaml`) in subdirectories. This key is used to point `hx --grammar build` to the correct path for compilation. When omitted, the root of repository is used | - -Or a `path` key with an absolute path to a locally available grammar directory. +You may use the `source.path` key rather than `source.git` with an absolute path +to a locally available grammar for testing, but switch to `source.git` before +submitting a pull request. ## Queries @@ -91,8 +39,7 @@ the last matching query supersedes the ones before it. See - If a parser is segfaulting or you want to remove the parser, make sure to remove the compiled parser in `runtime/grammar/<name>.so` -[treesitter-language-injection]: https://tree-sitter.github.io/tree-sitter/syntax-highlighting#language-injection -[languages.toml]: https://github.com/helix-editor/helix/blob/master/languages.toml +[language configuration section]: ../languages.md [neovim-query-precedence]: https://github.com/helix-editor/helix/pull/1170#issuecomment-997294090 [install-lsp-wiki]: https://github.com/helix-editor/helix/wiki/How-to-install-the-default-language-servers [lang-support]: ../lang-support.md |