feat: add kdl (#4227)

* feat: add kdl

* feat: comment queries

* fix(kdl): comments properly highlighted now

* feat(kdl): folds

* chore: bump revision to feature-complete parser

* fix: folds

README.md

@@ -245,6 +245,7 @@ We are looking for maintainers to add more parsers and to write query files for
 - [x] [JSON with comments](https://gitlab.com/WhyNotHugo/tree-sitter-jsonc.git) (maintained by @WhyNotHugo)
 - [x] [jsonnet](https://github.com/sourcegraph/tree-sitter-jsonnet) (maintained by @nawordar)
 - [x] [julia](https://github.com/tree-sitter/tree-sitter-julia) (maintained by @theHamsta)
+- [x] [kdl](https://github.com/amaanq/tree-sitter-kdl) (experimental, maintained by @amaanq)
 - [x] [kotlin](https://github.com/fwcd/tree-sitter-kotlin) (maintained by @SalBakraa)
 - [x] [lalrpop](https://github.com/traxys/tree-sitter-lalrpop) (maintained by @traxys)
 - [x] [latex](https://github.com/latex-lsp/tree-sitter-latex) (maintained by @theHamsta, @clason)

lockfile.json

@@ -218,6 +218,9 @@
   "julia": {
     "revision": "9d368185be7e8139f2eda93d8b0acc2a54031718"
   },
+  "kdl": {
+    "revision": "3a67244a48e9446248fc48117afe11dab19b030a"
+  },
   "kotlin": {
     "revision": "e4637037a5fe6f25fe66c305669faa0855f35692"
   },

lua/nvim-treesitter/parsers.lua

@@ -374,6 +374,16 @@ list.java = {
   maintainers = { "@p00f" },
 }
 
+list.kdl = {
+  install_info = {
+    url = "https://github.com/amaanq/tree-sitter-kdl",
+    branch = "master",
+    files = { "src/parser.c", "src/scanner.c" },
+  },
+  maintainers = { "@amaanq" },
+  experimental = true,
+}
+
 list.kotlin = {
   install_info = {
     url = "https://github.com/fwcd/tree-sitter-kotlin",

queries/kdl/folds.scm

@@ -0,0 +1,3 @@
+; Folds
+
+(node_children) @fold

queries/kdl/highlights.scm

@@ -0,0 +1,55 @@
+; Types
+
+(node (identifier) @type)
+
+(type) @type
+
+(annotation_type) @type.builtin
+
+; Properties
+
+(prop (identifier) @property)
+
+; Variables
+
+(identifier) @variable
+
+; Operators
+[
+ "="
+ "+"
+ "-"
+] @operator
+
+; Literals
+
+(string) @string
+
+(escape) @string.escape
+
+(number) @number
+
+(number (decimal) @float)
+(number (exponent) @float)
+(number (decimal) (exponent) @float)
+
+(boolean) @boolean
+
+; Misc
+
+"null" @constant.builtin
+
+["{" "}"] @punctuation.bracket
+
+["(" ")"] @punctuation.bracket
+
+; Comments
+
+[
+  (single_line_comment)
+  (multi_line_comment)
+] @comment
+
+(node (node_comment) (#set! "priority" 105)) @comment
+(node (node_field (node_field_comment) (#set! "priority" 105)) @comment)
+(node_children (node_children_comment) (#set! "priority" 105)) @comment