Solidity Interface & Canonical Declaration
function isApprovedForAll(address owner, address operator) external view returns (bool)
查询指定操作员(operator)是否已被授予对资产所有者(owner)全部代币资产的管理权限。
理论基础执行 Gas: 2,100 ~ 4,000 gas (view)
返回值类型: bool
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) | isApprovedForAll(address,address) 的 4 字节函数选择器 |
| 0x04 ~ 0x23 (32B) | address | owner | 资产所有者地址 |
| 0x24 ~ 0x43 (32B) | address | operator | 待核验的操作员地址 |
Keccak-256 密码学哈希推导链
标准 ASCII 签名字符串: isApprovedForAll(address,address)
完整 256 位 Keccak 哈希: 0xe985e9c5c6636c6879256001057b28ccac7718ef0ac56553ff9b926452cab8a3
截取前 4 字节 (Big-Endian): 0xe985e9c5
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 0xe985e9c5 and branch
[0x0006] DUP1
[0x0007] PUSH4 0xe985e9c5
[0x000c] EQ
[0x000d] PUSH2 0x0050
[0x0010] JUMPI // Jump to implementation if matched