add noreturn and unreachable

tree-sitter-brolang/grammar.js

@@ -242,7 +242,7 @@ module.exports = grammar({
     _type_constant: $ => seq(optional('-'), choice($.integer, $.character)),
 
     builtin_type: _ => choice(
-      'void', 'type', 'anyopaque', 'bool', 'int', 'uint', 'float', 'range',
+      'void', 'noreturn', 'type', 'anyopaque', 'bool', 'int', 'uint', 'float', 'range',
       'i8', 'i16', 'i32', 'i64', 'u8', 'u16', 'u32', 'u64',
       'isize', 'usize', 'f32', 'f64',
       'c_char', 'c_schar', 'c_uchar', 'c_short', 'c_ushort',
@@ -462,6 +462,7 @@ module.exports = grammar({
       $.character,
       $.boolean,
       $.null,
+      $.unreachable,
       $.undefined,
     ),
 
@@ -645,6 +646,7 @@ module.exports = grammar({
 
     boolean: _ => choice('true', 'false'),
     null: _ => 'null',
+    unreachable: _ => 'unreachable',
     undefined: _ => 'undefined',
     sink: _ => '_',
 
@@ -653,10 +655,10 @@ module.exports = grammar({
       alias(choice(
         'test', 'func', 'c_func', 'struct', 'c_struct', 'opaque', 'union', 'enum',
         'distinct', 'alias', 'import', 'hide', 'return', 'try', 'catch', 'mut',
-        'null', 'undefined', 'orelse', 'and', 'or', 'xor', 'if', 'while', 'for',
+        'null', 'unreachable', 'undefined', 'orelse', 'and', 'or', 'xor', 'if', 'while', 'for',
         'expand', 'break', 'continue', 'defer', 'errdefer', 'yield', 'match', 'else',
         'true', 'false',
-        'void', 'type', 'anyopaque', 'bool', 'int', 'uint', 'float', 'range',
+        'void', 'noreturn', 'type', 'anyopaque', 'bool', 'int', 'uint', 'float', 'range',
         'i8', 'i16', 'i32', 'i64', 'u8', 'u16', 'u32', 'u64',
         'isize', 'usize', 'f32', 'f64',
         'c_char', 'c_schar', 'c_uchar', 'c_short', 'c_ushort',

tree-sitter-brolang/queries/highlights.scm

@@ -17,6 +17,7 @@
 
 [
   (null)
+  (unreachable)
   (undefined)
 ] @constant.builtin
 

tree-sitter-brolang/src/grammar.json

@@ -1577,6 +1577,10 @@
           "type": "STRING",
           "value": "void"
         },
+        {
+          "type": "STRING",
+          "value": "noreturn"
+        },
         {
           "type": "STRING",
           "value": "type"
@@ -3215,6 +3219,10 @@
           "type": "SYMBOL",
           "name": "null"
         },
+        {
+          "type": "SYMBOL",
+          "name": "unreachable"
+        },
         {
           "type": "SYMBOL",
           "name": "undefined"
@@ -5003,6 +5011,10 @@
       "type": "STRING",
       "value": "null"
     },
+    "unreachable": {
+      "type": "STRING",
+      "value": "unreachable"
+    },
     "undefined": {
       "type": "STRING",
       "value": "undefined"
@@ -5094,6 +5106,10 @@
                   "type": "STRING",
                   "value": "null"
                 },
+                {
+                  "type": "STRING",
+                  "value": "unreachable"
+                },
                 {
                   "type": "STRING",
                   "value": "undefined"
@@ -5170,6 +5186,10 @@
                   "type": "STRING",
                   "value": "void"
                 },
+                {
+                  "type": "STRING",
+                  "value": "noreturn"
+                },
                 {
                   "type": "STRING",
                   "value": "type"

tree-sitter-brolang/src/node-types.json

@@ -882,6 +882,10 @@
         {
           "type": "undefined",
           "named": true
+        },
+        {
+          "type": "unreachable",
+          "named": true
         }
       ]
     }
@@ -2356,6 +2360,11 @@
       ]
     }
   },
+  {
+    "type": "unreachable",
+    "named": true,
+    "fields": {}
+  },
   {
     "type": "variable_declaration",
     "named": true,
@@ -2924,6 +2933,10 @@
     "type": "mut",
     "named": false
   },
+  {
+    "type": "noreturn",
+    "named": false
+  },
   {
     "type": "null",
     "named": false
@@ -3004,6 +3017,10 @@
     "type": "union",
     "named": false
   },
+  {
+    "type": "unreachable",
+    "named": false
+  },
   {
     "type": "usize",
     "named": false

tree-sitter-brolang/test/highlight/types.bro

@@ -22,3 +22,9 @@ clear func($K, $V type) void {
 
 Generated :: alias struct_type!(.auto, {"value"}, {i32}, {null})
 #                  ^^^^^^^^^^^^ function.builtin
+
+fail func() noreturn {
+#           ^^^^^^^^ type.builtin
+  unreachable
+# ^^^^^^^^^^^ constant.builtin
+}