message_set_methods.rb in dry-schema-1.3.1

- old
+ new

@@ -10,11 +10,11 @@
         module MessageSetMethods
           # Filtered message hints from all messages
           #
           # @return [Array<Message::Hint>]
           attr_reader :hints
-          
+
           # Configuration option to enable/disable showing errors
           #
           # @return [Boolean]
           attr_reader :failures
 
@@ -35,9 +35,56 @@
           # @api public
           def to_h
             @to_h ||= failures ? messages_map : messages_map(hints)
           end
           alias_method :to_hash, :to_h
+
+          private
+
+          # @api private
+          def unique_paths
+            messages.uniq(&:path).map(&:path)
+          end
+
+          # @api private
+          def messages_map(messages = self.messages)
+            return EMPTY_HASH if empty?
+
+            messages.reduce(placeholders) { |hash, msg|
+              node = msg.path.reduce(hash) { |a, e| a.is_a?(Hash) ? a[e] : a.last[e] }
+              (node[0].is_a?(::Array) ? node[0] : node) << msg.dump
+              hash
+            }
+          end
+
+          # @api private
+          #
+          # rubocop:disable Metrics/AbcSize
+          # rubocop:disable Metrics/PerceivedComplexity
+          def initialize_placeholders!
+            @placeholders = unique_paths.each_with_object(EMPTY_HASH.dup) { |path, hash|
+              curr_idx = 0
+              last_idx = path.size - 1
+              node = hash
+
+              while curr_idx <= last_idx
+                key = path[curr_idx]
+
+                next_node =
+                  if node.is_a?(Array) && key.is_a?(Symbol)
+                    node_hash = (node << [] << {}).last
+                    node_hash[key] || (node_hash[key] = curr_idx < last_idx ? {} : [])
+                  else
+                    node[key] || (node[key] = curr_idx < last_idx ? {} : [])
+                  end
+
+                node = next_node
+                curr_idx += 1
+              end
+            }
+          end
+          # rubocop:enable Metrics/AbcSize
+          # rubocop:enable Metrics/PerceivedComplexity
         end
       end
     end
   end
 end