Add parenthesized expressions

corpus/declarations.txt

@@ -106,6 +106,7 @@ Binary arithmetic operators
 a {
   width: calc(100% - 80px);
   aspect-ratio: 1/2;
+  font-size: calc(10px + (56 - 10) * ((100vw - 320px) / (1920 - 320)));
 }
 
 ---
@@ -119,7 +120,20 @@ a {
         (call_expression (function_name) (arguments (binary_expression (integer_value (unit)) (integer_value (unit))))))
       (declaration
         (property_name)
-        (binary_expression (integer_value) (integer_value))))))
+        (binary_expression (integer_value) (integer_value)))
+      (declaration
+        (property_name)
+        (call_expression
+          (function_name)
+          (arguments
+            (binary_expression
+              (binary_expression
+                (integer_value (unit))
+                (parenthesized_value (binary_expression (integer_value) (integer_value))))
+              (parenthesized_value
+                (binary_expression
+                  (parenthesized_value (binary_expression (integer_value (unit)) (integer_value (unit))))
+                  (parenthesized_value (binary_expression (integer_value) (integer_value))))))))))))
 
 ============================
 Strings

grammar.js

@@ -261,9 +261,16 @@ module.exports = grammar({
       $.float_value,
       $.string_value,
       $.binary_expression,
+      $.parenthesized_value,
       $.call_expression
     )),
 
+    parenthesized_value: $ => seq(
+      '(',
+      $._value,
+      ')'
+    ),
+
     color_value: $ => seq('#', token.immediate(/[0-9a-fA-F]{3,8}/)),
 
     string_value: $ => token(choice(

src/grammar.json

@@ -1197,6 +1197,10 @@
             "type": "SYMBOL",
             "name": "binary_expression"
           },
+          {
+            "type": "SYMBOL",
+            "name": "parenthesized_value"
+          },
           {
             "type": "SYMBOL",
             "name": "call_expression"
@@ -1204,6 +1208,23 @@
         ]
       }
     },
+    "parenthesized_value": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "STRING",
+          "value": "("
+        },
+        {
+          "type": "SYMBOL",
+          "name": "_value"
+        },
+        {
+          "type": "STRING",
+          "value": ")"
+        }
+      ]
+    },
     "color_value": {
       "type": "SEQ",
       "members": [
@@ -1560,10 +1581,6 @@
       "type": "PATTERN",
       "value": "[a-zA-Z-_][a-zA-Z0-9-_]*"
     },
-    "plain_value": {
-      "type": "PATTERN",
-      "value": "[a-zA-Z-_][^;()\\[\\]\\s]*"
-    },
     "at_keyword": {
       "type": "PATTERN",
       "value": "@[a-zA-Z-_]+"
@@ -1587,6 +1604,10 @@
           }
         ]
       }
+    },
+    "plain_value": {
+      "type": "PATTERN",
+      "value": "[-_]*[a-zA-Z][^;()\\[\\]\\s]*"
     }
   },
   "extras": [