feat(treesitter): install firestore rules parser

.config/nvim/lua/casraf/plugins/treesitter.lua

@@ -95,6 +95,37 @@ return {
 
       vim.filetype.add({ extension = { ejs = "ejs" } })
       vim.treesitter.language.register("embedded_template", "ejs")
+
+      -- Firestore Rules tree-sitter parser
+      local parser_config = require('nvim-treesitter.parsers').get_parser_configs()
+      parser_config.firestore_rules = {
+        install_info = {
+          url = "https://github.com/grimsteel/tree-sitter-firestore-rules",
+          files = { "src/parser.c" },
+          branch = "main",
+          generate_requires_npm = false,
+          requires_generate_from_grammar = false,
+        },
+        filetype = "firestorerules",
+      }
+      vim.filetype.add({
+        pattern = {
+          ["firestore%.rules"] = "firestorerules",
+          ["storage%.rules"] = "firestorerules",
+          [".*%.rules"] = {
+            priority = -1,
+            function(path, bufnr)
+              local content = vim.api.nvim_buf_get_lines(bufnr, 0, 5, false)
+              for _, line in ipairs(content) do
+                if line:match("service%s+cloud%.firestore") or line:match("service%s+firebase%.storage") then
+                  return "firestorerules"
+                end
+              end
+            end,
+          },
+        },
+      })
+      vim.treesitter.language.register("firestore_rules", "firestorerules")
     end, 0)
   end
 }

.config/nvim/queries/firestore_rules/highlights.scm

@@ -0,0 +1,53 @@
+(bool) @constant.builtin
+(type) @type.builtin
+(number) @number
+(hex_number) @number
+(string) @string
+(bytes) @string.special
+"null" @constant.builtin
+(action) @constant.builtin
+(path) @module
+(comment) @comment
+(function_block function_name: (ident) @function)
+(call function_name: (ident) @function)
+"cloud.firestore" @variable.builtin
+"rules_version" @variable.builtin
+[
+ "match"
+ "allow"
+ "if"
+ "return"
+ "function"
+ "let"
+ "service"
+] @keyword
+[
+ "*"
+ "/"
+ "+"
+ "%"
+ "in"
+ "is"
+ "-"
+ ">="
+ "<="
+ ">"
+ "<"
+ "=="
+ "="
+ "!="
+ "&&"
+ "||"
+] @operator
+[
+ ":"
+ ";"
+] @punctuation.delimiter
+[
+ "{"
+ "}"
+ "["
+ "]"
+ "("
+ ")"
+] @punctuation.bracket