1// Test structures with cyclic references. 2// These can only be handled in pointer/callback mode, 3// see associated .options files. 4 5syntax = "proto2"; 6 7message TreeNode 8{ 9 optional int32 leaf = 1; 10 optional TreeNode left = 2; 11 optional TreeNode right = 3; 12} 13 14message Dictionary 15{ 16 repeated KeyValuePair dictItem = 1; 17} 18 19message KeyValuePair 20{ 21 required string key = 1; 22 optional string stringValue = 2; 23 optional int32 intValue = 3; 24 optional Dictionary dictValue = 4; 25 optional TreeNode treeValue = 5; 26} 27 28