add: attributes

Author: Anatoly03

example.nr

@@ -20,6 +20,11 @@ _CustomUnusedType, _custumUnusedVariable
 function(), Class(), _function()
 //structure<Hello, World <andEveryoneElse>> // THIS BREAKS: x < y
 
+#[builtin(hello)]
+fn WithComment() {
+    
+}
+
 // Import
 
 use x::y::z::{

src/syntax.json

@@ -18,6 +18,9 @@
 				{
 					"include": "#syntax"
 				},
+				{
+					"include": "#attribute"
+				},
 				{
 					"include": "#keywords"
 				},
@@ -188,6 +191,16 @@
 				}
 			]
 		},
+		"attribute": {
+			"begin": "#\\[",
+			"end": "\\]",
+			"patterns": [{
+				"begin": "[a-zA-Z_][a-zA-Z0-9_]\\s*\\(",
+				"end": "\\)"
+			}, {
+				"match": "[a-zA-Z_][a-zA-Z0-9_]"
+			}]
+		},
 		"keywords": {
 			"patterns": [{
 				"name": "keyword.control.nr",