grammar: Add apply to control declaration

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>

tree-sitter-p4/grammar.js

@@ -83,7 +83,7 @@ export default grammar({
         variableDeclaration: $ => seq(optional($.annotations), $.typeRef, field('variable_name', $.identifier), optional(seq($.assignment, $.expression)), $._semicolon),
 
         // Control declarations
-        control_declaration: $ => seq($.control, $.identifier, $.parameters, '{', repeat(choice($.table_declaration, $.action_declaration)), '}'),
+        control_declaration: $ => seq($.control, $.identifier, $.parameters, '{', repeat(choice($.table_declaration, $.action_declaration)), $.apply, $.statement, '}'),
         action_declaration: $ => seq($.action, $.identifier, $.parameters, $.statement),
         table_declaration: $ => seq($.table, $.identifier, '{', optional($.table_property_list), '}'),
 

tree-sitter-p4/test/corpus/control.txt

@@ -9,6 +9,8 @@ control simple() {
       x: exact;
     }
   }
+  apply {
+  }
 };
 
 ---
@@ -47,6 +49,10 @@ control simple() {
      )
     )
    )
+   (apply)
+   (statement
+    (blockStatement)
+   )
   )
  )
 )