Add defined array node

prism_compile.c

@@ -1131,6 +1131,16 @@ pm_compile_defined_expr0(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *co
       case PM_FALSE_NODE:
         dtype = DEFINED_FALSE;
         break;
+      case PM_ARRAY_NODE: {
+        pm_array_node_t *array_node = (pm_array_node_t *) node;
+        for (size_t index = 0; index < array_node->elements.size; index++) {
+          pm_compile_defined_expr0(iseq, array_node->elements.nodes[index], ret, src, popped, scope_node, dummy_line_node, lineno, true, lfinish);
+          if (!lfinish[1]) {
+            lfinish[1] = NEW_LABEL(lineno);
+          }
+          ADD_INSNL(ret, &dummy_line_node, branchunless, lfinish[1]);
+        }
+      }
       case PM_STRING_NODE:
       case PM_AND_NODE:
       case PM_OR_NODE:

test/ruby/test_compile_prism.rb

@@ -93,6 +93,7 @@ module Prism
       assert_prism_eval("defined? self")
       assert_prism_eval("defined? true")
       assert_prism_eval("defined? false")
+      assert_prism_eval("defined? [A, B, C]")
       assert_prism_eval("defined? 'str'")
       assert_prism_eval("defined? a && b")
       assert_prism_eval("defined? a || b")