Support WIT grammar (#4525)

book/src/generated/lang-support.md

@@ -126,6 +126,7 @@
 | wast | ✓ |  |  |  |
 | wat | ✓ |  |  |  |
 | wgsl | ✓ |  |  | `wgsl_analyzer` |
+| wit | ✓ |  | ✓ |  |
 | xit | ✓ |  |  |  |
 | xml | ✓ |  | ✓ |  |
 | yaml | ✓ |  | ✓ | `yaml-language-server` |

languages.toml

@@ -1917,3 +1917,25 @@ roots = []
 [[grammar]]
 name = "xml"
 source = { git = "https://github.com/RenjiSann/tree-sitter-xml", rev = "422528a43630db6dcc1e222d1c5ee3babd559473" }
+
+[[language]]
+name = "wit"
+scope = "source.wit"
+injection-regex = "wit"
+file-types = ["wit"]
+roots = []
+comment-token = "//"
+indent = { tab-width = 2, unit = "  " }
+
+[language.auto-pairs]
+'(' = ')'
+'{' = '}'
+'[' = ']'
+'"' = '"'
+"'" = "'"
+"<" = ">"
+
+[[grammar]]
+name = "wit"
+source = { git = "https://github.com/hh9527/tree-sitter-wit", rev = "c917790ab9aec50c5fd664cbfad8dd45110cfff3" }
+ 

runtime/queries/wit/highlights.scm

@@ -0,0 +1,67 @@
+(line_comment) @comment.line
+(block_comment) @comment.block
+(ty (ident) @type)
+
+(item_type name: (ident) @type)
+(item_record name: (ident) @type)
+(item_variant name: (ident) @type)
+(item_flags name: (ident) @type)
+(item_enum name: (ident) @type)
+(item_union name: (ident) @type)
+(item_resource name: (ident) @type)
+
+(item_use from: (ident) @namespace)
+(use_item name: (ident) @type)
+(item_func name: (ident) @function)
+(method name: (ident) @function.method)
+(fields (named_ty name: (ident) @variable.other.member))
+(input (args (named_ty name: (ident) @variable.parameter)))
+(output (args (named_ty name: (ident) @variable.other.member)))
+(flags (ident) @constant)
+(enum_items (ident) @constant)
+(variant_item tag: (ident) @type.enum.variant)
+
+[
+  (unit)
+
+  "u8" "u16" "u32" "u64"
+  "s8" "s16" "s32" "s64"
+  "float32" "float64"
+  "char" "bool" "string"
+] @type.builtin
+
+[
+  "list"
+  "option"
+  "result"
+  "tuple"
+  "future"
+  "stream"
+] @function.macro
+
+[ "," ":" ] @punctuation.delimiter
+[ "(" ")" "{" "}" "<" ">" ] @punctuation.bracket
+[ "=" "->" ] @operator
+
+[
+  "record"
+  "flags"
+  "variant"
+  "enum"
+  "union"
+  "type"
+  "resource"
+] @keyword.storage.type
+
+"func" @keyword
+
+[
+  "static"
+] @keyword.storage.modifier
+
+[
+  (star)
+  "use"
+  "as"
+  "from"
+] @keyword.control.import

runtime/queries/wit/indents.scm

@@ -0,0 +1,13 @@
+[
+  (use_items)
+  (fields)
+  (variant_items)
+  (variant_payload)
+  (flags)
+  (enum_items)
+  (union_items)
+  (args)
+  (resource_items)
+] @indent
+
+[ "}" ")" ] @outdent