craft.nft 合约 概览 操作 (23) 结构体 (34) 表 (9) 应用二进制接口 结构体 (34) rules rules 的表格行类型 { "name": "rules", "base": "", "fields": [ { "name": "rule_name", "type": "name" }, { "name": "rule_display", "type": "string" }, { "name": "rules", "type": "RuleItem[]" }, { "name": "total_weight", "type": "uint64" } ] }