Ticket #6465: 6465.diff

cli/class-block-plugin-checker.php

@@ -455 +455 @@
         }
 
         /**
+         * Determine whether a block is top-level or a child block.
+         *
+         * @param object $block The block in question.
+         *
+         * @return bool True if the block is top-level; false if it is a child block that can only be used within other blocks in the plugin.
+         */
+        public function is_top_level_block( $block ) {
+                $ancestors = $block->parent ?? [];
+                $ancestors = array_merge( $ancestors, $block->ancestor ?? [] );
+
+                // If it has no parent or ancestor blocks, it's top-level.
+                if ( empty( $ancestors ) ) {
+                        return true;
+                }
+
+                foreach ( $ancestors as $ancestor_block_name ) {
+                        // If it has an ancestor outside of this plugin, like `core/column`, then it's also top-level.
+                        if ( ! isset( $this->blocks[ $ancestor_block_name ] ) ) {
+                                return true;
+                        }
+                }
+
+                return false;   
+        }
+
+        /**
          * Check functions below here. Must be named `check_*()`.
          */
 
@@ -791 +817 @@
 
                 $top_level_blocks = array_filter(
                         $this->blocks,
-                        function( $block ) {
-                                return ! isset( $block->parent ) || is_null( $block->parent );
-                        }
+                        array( $this, 'is_top_level_block' )
                 );
 
                 if ( count( $top_level_blocks ) > 1 ) {