diff options
| author | Gokul Soumya | 2021-10-23 02:41:19 +0000 |
|---|---|---|
| committer | GitHub | 2021-10-23 02:41:19 +0000 |
| commit | 4ee92cad19cc94f0751f91fa9391d1899353d740 (patch) | |
| tree | 794be048905f5d5026ba1968dc0152d12473c024 /book/src/guides/textobject.md | |
| parent | c5298caa752dee136ab1a21dae27a702a00d8eea (diff) | |
Add treesitter textobjects (#728)
* Add treesitter textobject queries
Only for Go, Python and Rust for now.
* Add tree-sitter textobjects
Only has functions and class objects as of now.
* Fix tests
* Add docs for tree-sitter textobjects
* Add guide for creating new textobject queries
* Add parameter textobject
Only parameter.inside is implemented now, parameter.around
will probably require custom predicates akin to nvim' `make-range`
since we want to select a trailing comma too (a comma will be
an anonymous node and matching against them doesn't work similar
to named nodes)
* Simplify TextObject cell init
Diffstat (limited to 'book/src/guides/textobject.md')
| -rw-r--r-- | book/src/guides/textobject.md | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/book/src/guides/textobject.md b/book/src/guides/textobject.md new file mode 100644 index 00000000..50b3b574 --- /dev/null +++ b/book/src/guides/textobject.md @@ -0,0 +1,30 @@ +# Adding Textobject Queries + +Textobjects that are language specific ([like functions, classes, etc][textobjects]) +require an accompanying tree-sitter grammar and a `textobjects.scm` query file +to work properly. Tree-sitter allows us to query the source code syntax tree +and capture specific parts of it. The queries are written in a lisp dialect. +More information on how to write queries can be found in the [official tree-sitter +documentation](tree-sitter-queries). + +Query files should be placed in `runtime/queries/{language}/textobjects.scm` +when contributing. Note that to test the query files locally you should put +them under your local runtime directory (`~/.config/helix/runtime` on Linux +for example). + +The following [captures][tree-sitter-captures] are recognized: + +| Capture Name | +| --- | +| `function.inside` | +| `function.around` | +| `class.inside` | +| `class.around` | +| `parameter.inside` | + +[Example query files][textobject-examples] can be found in the helix GitHub repository. + +[textobjects]: ../usage.md#textobjects +[tree-sitter-queries]: https://tree-sitter.github.io/tree-sitter/using-parsers#query-syntax +[tree-sitter-captures]: https://tree-sitter.github.io/tree-sitter/using-parsers#capturing-nodes +[textobject-examples]: https://github.com/search?q=repo%3Ahelix-editor%2Fhelix+filename%3Atextobjects.scm&type=Code&ref=advsearch&l=&l= |