104 lines
4.0 KiB
Plaintext
104 lines
4.0 KiB
Plaintext
# ACC-20C 兼容层协议 - 状态同步合约
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# 版本: 1.0
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# 路径: charter-std/acc/acc20c_sync.ch
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# --- 核心原则 ---
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# 1. 被动执行: 本合约仅作为执行器，被动接收来自 CBPP 区块扫描器的指令。
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# 2. 权限控制: 只有授权的区块扫描器服务（通过地址识别）才能调用本合约的更新函数。
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# 3. 目标明确: 主要职责是触发元数据合约的更新，或在极端情况下更新包装器合约的状态。
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# --- 标准库与接口导入 ---
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import std::types::{ Address, Uint256, Uint64, String }
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# 导入元数据合约接口
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import charter-std::acc::acc20c_metadata::{ IMetadataGenerator }
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# 导入包装器合约接口
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import charter-std::acc::acc20c_wrapper::{ IAcc20CWrapper }
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# --- 合约状态定义 ---
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state {
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# 授权的 CBPP 区块扫描器服务地址
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scanner_service_address: Address,
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# 元数据生成器合约地址
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metadata_generator: Address,
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# 包装器合约地址
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wrapper_contract: Address,
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}
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# --- 事件定义 ---
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event StateSynced {
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wrapper_token_id: Uint256,
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sync_type: String, # 例如 "VALUATION_UPDATE", "OWNERSHIP_CHANGE"
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block_number: Uint64,
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}
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# --- 合约初始化 ---
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fn constructor(scanner_addr: Address, metadata_addr: Address, wrapper_addr: Address) {
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state.scanner_service_address = scanner_addr;
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state.metadata_generator = metadata_addr;
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state.wrapper_contract = wrapper_addr;
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}
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# --- 核心功能函数 ---
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# @dev 由区块扫描器调用，以更新底层资产估值
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# @param acc20_contract 发生估值更新的 ACC-20 合约地址
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# @param acc20_token_id 发生估值更新的 ACC-20 代币 ID
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# @param new_valuation 新的估值
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fn update_valuation(acc20_contract: Address, acc20_token_id: Uint256, new_valuation: Uint256) {
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# 权限检查：只有授权的扫描器才能调用
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require(msg.sender == state.scanner_service_address, "Unauthorized scanner service");
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let wrapper = IAcc20CWrapper(state.wrapper_contract);
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let wrapper_id = wrapper.get_wrapper_id(acc20_contract, acc20_token_id);
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# 如果该资产已被包装，则触发相应的更新
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if wrapper_id != 0 {
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# 在真实的实现中，这里可能会调用元数据合约的一个函数来强制刷新缓存
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# 或者直接在链上记录这个更新，以便元数据合约下次生成时使用
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# 为简化，此处仅触发一个事件
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emit StateSynced {
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wrapper_token_id: wrapper_id,
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sync_type: "VALUATION_UPDATE",
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block_number: block.number,
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};
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}
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}
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# @dev 由区块扫描器调用，处理底层资产状态的重大变更（例如，被司法冻结）
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# @param acc20_contract 发生状态变更的 ACC-20 合约地址
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# @param acc20_token_id 发生状态变更的 ACC-20 代币 ID
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# @param new_status_code 新的状态码
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fn handle_critical_status_change(acc20_contract: Address, acc20_token_id: Uint256, new_status_code: Uint64) {
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require(msg.sender == state.scanner_service_address, "Unauthorized scanner service");
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let wrapper = IAcc20CWrapper(state.wrapper_contract);
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let wrapper_id = wrapper.get_wrapper_id(acc20_contract, acc20_token_id);
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if wrapper_id != 0 {
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# 如果底层资产被冻结，则同步冻结包装后的资产
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if new_status_code == 2 { # 假设 2 代表“冻结”
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wrapper.freeze_asset(wrapper_id);
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}
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# 如果底层资产恢复正常，则同步解冻
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else if new_status_code == 1 { # 假设 1 代表“活跃”
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wrapper.unfreeze_asset(wrapper_id);
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}
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emit StateSynced {
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wrapper_token_id: wrapper_id,
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sync_type: "CRITICAL_STATUS_CHANGE",
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block_number: block.number,
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};
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}
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}
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# --- 管理员函数 ---
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# @dev 更新授权的扫描器服务地址
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fn set_scanner_address(new_address: Address) {
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# 假设合约的 admin 是部署者
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require(msg.sender == state.admin, "Only admin can set scanner address");
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state.scanner_service_address = new_address;
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}
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