fix @rust functions

grammar.js

@@ -29,8 +29,9 @@ module.exports = grammar({
     function_definition: $ => choice($.func, $.block),
     func: $ => seq(
       'func', $._spacing,
-      $.identifier, $._spacing, choice(seq('@', $.identifier, '!{', $._spacing, repeat(choice(/./, $._spacing)), $._spacing, '}'), $.block),
+      $.identifier, $._spacing, choice(seq('@', $.identifier, '!', $.blocky), $.block),
     ),
+    blocky: $ => seq('{', repeat(choice($.blocky, /./)), '}'),
     block: $ => seq(
       '{', $._spacing, repeat(seq(/[^ \n\r\t|]+/, $._spacing)), '|', 
         repeat($._statement), 

src/grammar.json

@@ -150,35 +150,11 @@
                 },
                 {
                   "type": "STRING",
-                  "value": "!{"
+                  "value": "!"
                 },
                 {
                   "type": "SYMBOL",
-                  "name": "_spacing"
-                },
-                {
-                  "type": "REPEAT",
-                  "content": {
-                    "type": "CHOICE",
-                    "members": [
-                      {
-                        "type": "PATTERN",
-                        "value": "."
-                      },
-                      {
-                        "type": "SYMBOL",
-                        "name": "_spacing"
-                      }
-                    ]
-                  }
-                },
-                {
-                  "type": "SYMBOL",
-                  "name": "_spacing"
-                },
-                {
-                  "type": "STRING",
-                  "value": "}"
+                  "name": "blocky"
                 }
               ]
             },
@@ -190,6 +166,35 @@
         }
       ]
     },
+    "blocky": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "STRING",
+          "value": "{"
+        },
+        {
+          "type": "REPEAT",
+          "content": {
+            "type": "CHOICE",
+            "members": [
+              {
+                "type": "SYMBOL",
+                "name": "blocky"
+              },
+              {
+                "type": "PATTERN",
+                "value": "."
+              }
+            ]
+          }
+        },
+        {
+          "type": "STRING",
+          "value": "}"
+        }
+      ]
+    },
     "block": {
       "type": "SEQ",
       "members": [

src/node-types.json

@@ -133,6 +133,21 @@
       ]
     }
   },
+  {
+    "type": "blocky",
+    "named": true,
+    "fields": {},
+    "children": {
+      "multiple": true,
+      "required": false,
+      "types": [
+        {
+          "type": "blocky",
+          "named": true
+        }
+      ]
+    }
+  },
   {
     "type": "call",
     "named": true,
@@ -313,6 +328,10 @@
           "type": "block",
           "named": true
         },
+        {
+          "type": "blocky",
+          "named": true
+        },
         {
           "type": "identifier",
           "named": true
@@ -614,7 +633,7 @@
     }
   },
   {
-    "type": "!{",
+    "type": "!",
     "named": false
   },
   {