exchange.IO(“abi”, …)

在发明者量化交易平台主要通过exchange.IO()函数实现区块链相关的各种功能、调用。 以下文档把exchange.IO()函数根据其功能分别描述。 exchange.IO("abi", ...)函数的调用方式用于注册ABI。

exchange.IO(k, address, abiContent)

k
true
string
```address```参数用于指定智能合约的地址。
address
true
string
```abiContent```参数用于指定智能合约的```ABI```。
abiContent
true
string

```javascript
function main() {
    // register Uniswap SwapRouter02 abi
    var routerAddress = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"
    var abi = `[{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactOutputParams","name":"params","type":"tuple"}],"name":"exactOutput","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"}]`
    
    // abi只使用了局部的exactOutput方法的内容，完整的abi可以在网上搜索
    exchange.IO("abi", routerAddress, abi)
}

调用的智能合约方法如果是标准ERC20方法，则不需要注册。 获取合约的ABI内容可以通过下面URL获取，只取result字段，例如：

https://api.etherscan.io/api?module=contract&action=getabi&address=0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45

Threads exchange.IO("api", "eth", ...)