Solidity Interface & Canonical Declaration
function repay(address asset, uint256 amount, uint256 interestRateMode, address onBehalfOf) external returns (uint256)
偿还之前在借贷储备池中借取的借款,销毁对应的债务代币并恢复健康因子。
理论基础执行 Gas: 95,000 ~ 170,000 gas
返回值类型: uint256
Calldata 调用数据 ABI 编码布局账本
| Calldata Offset | Type | Parameter Name | Semantic Role |
|---|---|---|---|
| 0x00 ~ 0x03 (4B) | bytes4 | Method ID (msg.sig) | repay(address,uint256,uint256,address) 的 4 字节函数选择器 |
| 0x04 ~ 0x23 (32B) | address | asset | 偿还的底层资产 |
| 0x24 ~ 0x43 (32B) | uint256 | amount | 还款数量(可填最大值全额结清) |
| 0x44 ~ 0x63 (32B) | uint256 | interestRateMode | 偿还的债务利率类型 |
| 0x64 ~ 0x83 (32B) | address | onBehalfOf | 被偿还债务的借款人账户 |
Keccak-256 密码学哈希推导链
标准 ASCII 签名字符串: repay(address,uint256,uint256,address)
完整 256 位 Keccak 哈希: 0x573ade81da917875600753138ed8197ed3f106cda3a0b9d55b18d160638e02a9
截取前 4 字节 (Big-Endian): 0x573ade81
EVM 运行时调度器汇编代码特征 (Dispatcher Opcodes)
// 1. Load the first 32 bytes of transaction calldata
[0x0000] PUSH1 0x00
[0x0002] CALLDATALOAD
// 2. Right-shift by 224 bits (0xe0) to isolate the 4-byte selector
[0x0003] PUSH1 0xe0
[0x0005] SHR
// 3. Match against target selector 0x573ade81 and branch
[0x0006] DUP1
[0x0007] PUSH4 0x573ade81
[0x000c] EQ
[0x000d] PUSH2 0x0050
[0x0010] JUMPI // Jump to implementation if matched