Announcement

I've stopped using helm (which I mostly written this package for) on a daily basis, so I don't really keep up with the development of tree sitter, and nvim-tree-sitter. So this project won't receive any attention from me in the near future.

If you are interested in mainaining the project, feel free to fork the repo, and if the fork is maintained I will gladly delegate you this repository or link it.

tree-sitter-go-template

Golang templates grammar for tree-sitter.

NeoVim integration using nvim-treesitter

Add gotmpl parser following nvim-treesitter instructions

local parser_config = require'nvim-treesitter.parsers'.get_parser_configs()
parser_config.gotmpl = {
  install_info = {
    url = "https://github.com/ngalaiko/tree-sitter-go-template",
    files = {"src/parser.c"}
  },
  filetype = "gotmpl",
  used_by = {"gohtmltmpl", "gotexttmpl", "gotmpl", "yaml"}
}

Note that yaml is listed under used_by. I've set this to highlight helm templates as Go Templates instead of yaml. To ensure that yaml highlighting is still working, you should set up language injection for gotmpl filetypes.

Run :TSInstallFromGrammar gotmpl to download and compile the grammar into your tree-sitter installation

Setup filetype detection in ~/.config/nvim/ftdetect/gotmpl.vim:

autocmd BufNewFile,BufRead * if search('{{.\+}}', 'nw') | setlocal filetype=gotmpl | endif

Define language injection for yaml in ~/.config/nvim/queries/gotmpl/injections.scm:
```
(text) @yaml
```

Define highlights in ~/.config/nvim/queries/gotmpl/highlights.scm, for example:

; Identifiers

[
    (field)
    (field_identifier)
] @property

(variable) @variable

; Function calls

(function_call
  function: (identifier) @function)

(method_call
  method: (selector_expression
    field: (field_identifier) @method))

; Operators

"|" @operator
":=" @operator

; Builtin functions

((identifier) @function.builtin
 (#match? @function.builtin "^(and|call|html|index|slice|js|len|not|or|print|printf|println|urlquery|eq|ne|lt|ge|gt|ge)$"))

; Delimiters

"." @punctuation.delimiter
"," @punctuation.delimiter

"{{" @punctuation.bracket
"}}" @punctuation.bracket
"{{-" @punctuation.bracket
"-}}" @punctuation.bracket
")" @punctuation.bracket
"(" @punctuation.bracket

; Keywords

[
    "else"
    "else if"
    "if"
    "with"
] @conditional

[
    "range"
    "end"
    "template"
    "define"
    "block"
] @keyword

; Literals

[
  (interpreted_string_literal)
  (raw_string_literal)
  (rune_literal)
] @string

(escape_sequence) @string.special

[
  (int_literal)
  (float_literal)
  (imaginary_literal)
] @number

[
    (true)
    (false)
] @boolean

[
  (nil)
] @constant.builtin

(comment) @comment
(ERROR) @error

MikaelElkiaer/tree-sitter-go-template

Announcement

tree-sitter-go-template

NeoVim integration using nvim-treesitter