Add select binding

src/grammar.json

@@ -744,6 +744,10 @@
           "named": true,
           "value": "any"
         },
+        {
+          "type": "SYMBOL",
+          "name": "pattern_binding"
+        },
         {
           "type": "ALIAS",
           "content": {
@@ -755,6 +759,45 @@
         }
       ]
     },
+    "pattern_binding": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "FIELD",
+          "name": "value",
+          "content": {
+            "type": "ALIAS",
+            "content": {
+              "type": "STRING",
+              "value": "any"
+            },
+            "named": true,
+            "value": "any"
+          }
+        },
+        {
+          "type": "FIELD",
+          "name": "operator",
+          "content": {
+            "type": "ALIAS",
+            "content": {
+              "type": "STRING",
+              "value": "@"
+            },
+            "named": true,
+            "value": "operator"
+          }
+        },
+        {
+          "type": "FIELD",
+          "name": "binding",
+          "content": {
+            "type": "SYMBOL",
+            "name": "identifier"
+          }
+        }
+      ]
+    },
     "_case_value": {
       "type": "CHOICE",
       "members": [

src/node-types.json

@@ -321,6 +321,42 @@
       }
     }
   },
+  {
+    "type": "pattern_binding",
+    "named": true,
+    "fields": {
+      "binding": {
+        "multiple": false,
+        "required": true,
+        "types": [
+          {
+            "type": "identifier",
+            "named": true
+          }
+        ]
+      },
+      "operator": {
+        "multiple": false,
+        "required": true,
+        "types": [
+          {
+            "type": "operator",
+            "named": true
+          }
+        ]
+      },
+      "value": {
+        "multiple": false,
+        "required": true,
+        "types": [
+          {
+            "type": "any",
+            "named": true
+          }
+        ]
+      }
+    }
+  },
   {
     "type": "property",
     "named": true,
@@ -499,6 +535,10 @@
           "type": "interpreted_string_literal",
           "named": true
         },
+        {
+          "type": "pattern_binding",
+          "named": true
+        },
         {
           "type": "raw_string_literal",
           "named": true