feat(parsers): add wat

SUPPORTED_LANGUAGES.md

@@ -322,6 +322,7 @@ jsx (queries only)[^jsx] | unstable | `HFIJ ` | @steelsojka
 [vimdoc](https://github.com/neovim/tree-sitter-vimdoc) | unstable | `H  J ` | @clason
 [vrl](https://github.com/belltoy/tree-sitter-vrl) | unstable | `HFIJL` | @belltoy
 [vue](https://github.com/tree-sitter-grammars/tree-sitter-vue) | unstable | `HFIJ ` | @WhyNotHugo, @lucario387
+[wat](https://github.com/g-plane/tree-sitter-wat) | unstable | `HF   ` | @g-plane
 [wgsl](https://github.com/szebniok/tree-sitter-wgsl) | unstable | `HFIJ ` | @szebniok
 [wgsl_bevy](https://github.com/tree-sitter-grammars/tree-sitter-wgsl-bevy) | unstable | `HFI  ` | @theHamsta
 [wing](https://github.com/winglang/tree-sitter-wing) | unstable | `HF JL` | @gshpychka, @MarkMcCulloh

lua/nvim-treesitter/parsers.lua

@@ -2560,6 +2560,14 @@ return {
     requires = { 'html_tags' },
     tier = 2,
   },
+  wat = {
+    install_info = {
+      revision = '357bbe6053f261b205f5835a87a6ae094226cc57',
+      url = 'https://github.com/g-plane/tree-sitter-wat',
+    },
+    maintainers = { '@g-plane' },
+    tier = 2,
+  },
   wgsl = {
     install_info = {
       revision = '40259f3c77ea856841a4e0c4c807705f3e4a2b65',

runtime/queries/wat/folds.scm

@@ -0,0 +1,21 @@
+[
+  (block_block)
+  (block_if)
+  (block_if_else)
+  (block_if_then)
+  (block_loop)
+  (block_try_table)
+  (module)
+  (module_field_data)
+  (module_field_elem)
+  (module_field_export)
+  (module_field_func)
+  (module_field_global)
+  (module_field_import)
+  (module_field_memory)
+  (module_field_start)
+  (module_field_table)
+  (module_field_tag)
+  (rec_type)
+  (type_def)
+] @fold

runtime/queries/wat/highlights.scm

@@ -0,0 +1,143 @@
+[
+  (block_comment)
+  (line_comment)
+] @comment
+
+((block_comment)+ @comment.documentation
+  (#match? @comment.documentation "^;;;\\s+.*"))
+
+[
+  "block"
+  "data"
+  "declare"
+  "elem"
+  "end"
+  "export"
+  "field"
+  "final"
+  "global"
+  "item"
+  "local"
+  "memory"
+  "module"
+  "null"
+  "offset"
+  "pagesize"
+  "param"
+  "rec"
+  "ref"
+  "result"
+  "shared"
+  "start"
+  "sub"
+  "table"
+  "tag"
+  "try_table"
+  "unshared"
+] @keyword
+
+"func" @keyword.function
+
+"import" @keyword.import
+
+[
+  "type"
+  "struct"
+  "array"
+] @keyword.type
+
+"mut" @keyword.modifier
+
+"loop" @keyword.repeat
+
+[
+  "catch"
+  "catch_ref"
+  "catch_all"
+  "catch_all_ref"
+] @keyword.exception
+
+[
+  "if"
+  "then"
+  "else"
+] @keyword.conditional
+
+[
+  (integer)
+  (uinteger)
+] @number
+
+(float) @number.float
+
+(instr_name) @operator
+
+[
+  "("
+  ")"
+] @punctuation.bracket
+
+(annotation_start) @attribute
+
+(string) @string
+
+((annotation_elem) @string
+  (#match? @string "^\".*\"$"))
+
+[
+  (num_type)
+  (vec_type)
+  (packed_type)
+] @type.builtin
+
+((ref_type) @type.builtin
+  (#match? @type.builtin "^(any|eq|i31|struct|array|null|(null)?func|(null)?exn|(null)?extern)ref$"))
+
+((heap_type) @type.builtin
+  (#match? @type.builtin "^(any|eq|i31|struct|array|null|(null)?func|(null)?exn|(null)?extern)$"))
+
+(identifier) @variable
+
+(index
+  (uinteger) @variable)
+
+(param
+  (identifier) @variable.parameter)
+
+(field
+  (identifier) @variable.member)
+
+(module
+  (identifier) @module)
+
+([
+  (block_block)
+  (block_if)
+  (block_loop)
+  (block_try_table)
+]
+  (identifier) @label)
+
+(module_field_func
+  (identifier) @function)
+
+(extern_type_func
+  (identifier) @function)
+
+(module_field_start
+  (index
+    [
+      (identifier)
+      (uinteger)
+    ] @function.call))
+
+(plain_instr
+  ((instr_name) @operator
+    (#match? @operator "^(return_)?call$"))
+  [
+    (identifier)
+    (integer)
+  ] @function.call)
+
+(type_def
+  (identifier) @type)