智能路由兑换函数
智能路由当前只有一个swapExactInput函数，用户可以调用其来触发交易。智能路由器会在内部处理交易数据并完成交易。
swapExactInput
名称：swapExactInput( address[], string[], uint256[], uint24[], SwapData)
描述：swapExactInput 函数是兑换操作的统一入口。
定义：
function swapExactInput(
address[] calldata path,
string[] calldata poolVersion,
uint256[] calldata versionLen,
uint24[] calldata fees,
SwapData calldata data
) external nonReentrant payable returns (uint256[] memory amountsOut) struct SwapData {
uint256 amountIn;
uint256 amountOutMin;
address to;
uint256 deadline;
}参数：
path：路径数组
poolVersion：pool的版本数组。大小写敏感
versionLen：相邻 pool 版本的长度数组。第一个要+1。
fees：fee率数组。fee率数组长度跟path数组长度一致，最后一个固定为零；v1和v2都填零，v3根据池子的费率填写。
data：[要兑换金额，兑换出的最小接受额，接受兑换金额地址，deadline] 示例：用1个TRX兑换为USDJ
Name
Value
Description
path
[WTRX address, USDT address, USDJ address]
path of tokens
poolVersion
['v1', 'v2']
poolVersion can be v1,V2,V3,usdt20psm,usdd202pool，2pooltusdusdt,usdc2pooltusdusdt,usdd2pooltusdusdt,usdj2pooltusdusdt, oldusdcpool,old3pool
versionLen
[2, 1]
array of counts of token numbers in poolVersions, eg: if path = [A,B,C,D],poolVersion = ['v2','v2','v3'],that means A->B use 'V2', B->C use 'V2',C->D use 'V3',so the versionLen = ['3','1']. The number of first poolversion count must +1
fees
[0,0,0]
poolFees used to distinguish V3 pools; all other pools are set to 0.
data
[1000000, 1, receiver, deadline]
SwapData
代码实现
主要利用 TronWeb 与合约交互, 初始化 TronWeb 实例后, 就能很方便的与线上合约交互。
const router = await tronWeb.contract(smartrouterAbi, nile.smartRouter);
const trx = '0x0000000000000000000000000000000000000000';
let result = await router
.swapExactInput(
[trx, nile.usdtToken, nile.usdjToken],
['v1', 'v2'],//小写
[2, 1],//第一个要加1
[0,0,0], //最后一个固定是零。只有V3有数字，V1，V2都是零
[1000000,1, //不带精度
'TXXXXXXXXXXXXXXXXXXXXXXXX', //接受兑换金额的地址自定义
Math.floor(Date.now() / 1000 + 86400)],//deadline 秒
)
.send({ callValue: 1000000 , feeLimit: 10000 * 1e6 }); //如果第一个是TRX,则value必须填写，且与要兑换的金额一致。如果第一个不是TRX，则value不需要填写。
console.log(result);完整代码
import { initTronWeb } from './tron.mjs';
import config from './config.js';
const { mainnet, nile } = config;
import utils from 'web3-utils';
const { toBN, toWei } = utils;
const tronWeb = await initTronWeb(nile);
let smartrouterAbi = [
{
"inputs": [
{
"internalType": "address",
"name": "_old3pool",
"type": "address"
},
{
"internalType": "address",
"name": "_usdcPool",
"type": "address"
},
{
"internalType": "address",
"name": "_v2Router",
"type": "address"
},
{
"internalType": "address",
"name": "_v1Foctroy",
"type": "address"
},
{
"internalType": "address",
"name": "_usdt",
"type": "address"
},
{
"internalType": "address",
"name": "_usdj",
"type": "address"
},
{
"internalType": "address",
"name": "_tusd",
"type": "address"
},
{
"internalType": "address",
"name": "_usdc",
"type": "address"
},
{
"internalType": "address",
"name": "_psmUsdd",
"type": "address"
},
{
"internalType": "address",
"name": "_v3Router",
"type": "address"
}
],
"stateMutability": "nonpayable",
"type": "constructor"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "pool",
"type": "address"
},
{
"indexed": false,
"internalType": "address[]",
"name": "tokens",
"type": "address[]"
}
],
"name": "AddPool",
"type": "event",
"stateMutability": "nonpayable"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "admin",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "pool",
"type": "address"
},
{
"indexed": false,
"internalType": "address[]",
"name": "tokens",
"type": "address[]"
}
],
"name": "ChangePool",
"type": "event",
"stateMutability": "nonpayable"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "buyer",
"type": "address"
},
{
"indexed": true,
"internalType": "uint256",
"name": "amountIn",
"type": "uint256"
},
{
"indexed": false,
"internalType": "uint256[]",
"name": "amountsOut",
"type": "uint256[]"
}
],
"name": "SwapExactETHForTokens",
"type": "event",
"stateMutability": "nonpayable"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "buyer",
"type": "address"
},
{
"indexed": true,
"internalType": "uint256",
"name": "amountIn",
"type": "uint256"
},
{
"indexed": false,
"internalType": "uint256[]",
"name": "amountsOut",
"type": "uint256[]"
}
],
"name": "SwapExactTokensForTokens",
"type": "event",
"stateMutability": "nonpayable"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "originOwner",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "newOwner",
"type": "address"
}
],
"name": "TransferAdminship",
"type": "event",
"stateMutability": "nonpayable"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "originOwner",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "newOwner",
"type": "address"
}
],
"name": "TransferOwnership",
"type": "event",
"stateMutability": "nonpayable"
},
{
"stateMutability": "payable",
"type": "fallback",
"name": "fallback"
},
{
"inputs": [],
"name": "admin",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "owner",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "psmUsdd",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "v1Factory",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "v2Router",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "v3Router",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"stateMutability": "payable",
"type": "receive",
"name": "receive"
},
{
"inputs": [
{
"internalType": "address",
"name": "newOwner",
"type": "address"
}
],
"name": "transferOwnership",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "newAdmin",
"type": "address"
}
],
"name": "transferAdminship",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "token",
"type": "address"
},
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "amount",
"type": "uint256"
}
],
"name": "retrieve",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "string",
"name": "poolVersion",
"type": "string"
},
{
"internalType": "address",
"name": "pool",
"type": "address"
},
{
"internalType": "address[]",
"name": "tokens",
"type": "address[]"
}
],
"name": "addPool",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "string",
"name": "poolVersion",
"type": "string"
},
{
"internalType": "address",
"name": "pool",
"type": "address"
},
{
"internalType": "address[]",
"name": "tokens",
"type": "address[]"
}
],
"name": "addUsdcPool",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "string",
"name": "poolVersion",
"type": "string"
},
{
"internalType": "address",
"name": "pool",
"type": "address"
},
{
"internalType": "address",
"name": "gemJoin",
"type": "address"
},
{
"internalType": "address[]",
"name": "tokens",
"type": "address[]"
}
],
"name": "addPsmPool",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "string",
"name": "poolVersion",
"type": "string"
}
],
"name": "isUsdcPool",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "string",
"name": "poolVersion",
"type": "string"
}
],
"name": "isPsmPool",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "pool",
"type": "address"
},
{
"internalType": "address[]",
"name": "tokens",
"type": "address[]"
}
],
"name": "changePool",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address[]",
"name": "path",
"type": "address[]"
},
{
"internalType": "string[]",
"name": "poolVersion",
"type": "string[]"
},
{
"internalType": "uint256[]",
"name": "versionLen",
"type": "uint256[]"
},
{
"internalType": "uint24[]",
"name": "fees",
"type": "uint24[]"
},
{
"components": [
{
"internalType": "uint256",
"name": "amountIn",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "amountOutMin",
"type": "uint256"
},
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "deadline",
"type": "uint256"
}
],
"internalType": "struct SmartExchangeRouter.SwapData",
"name": "data",
"type": "tuple"
}
],
"name": "swapExactInput",
"outputs": [
{
"internalType": "uint256[]",
"name": "amountsOut",
"type": "uint256[]"
}
],
"stateMutability": "payable",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "amountMinimum",
"type": "uint256"
},
{
"internalType": "address",
"name": "recipient",
"type": "address"
}
],
"name": "unwrapWTRX",
"outputs": [],
"stateMutability": "payable",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "amountMax",
"type": "uint256"
}
],
"name": "warpWTRX",
"outputs": [],
"stateMutability": "payable",
"type": "function"
}
];
const router = await tronWeb.contract(smartrouterAbi, nile.smartRouter);
const trx = '0x0000000000000000000000000000000000000000';
let result = await router
.swapExactInput(
[trx, nile.usdtToken, nile.usdjToken],
['v1', 'v2'],//小写
[2, 1],//第一个要加1
[0,0,0], //最后一个固定是零。只有V3有数字，V1，V2都是零
[1000000,1, //不带精度
'THP6c4MTraQZatHbkxTP3pdL4AsgdeN9sj', //接受兑换金额的地址自定义
Math.floor(Date.now() / 1000 + 86400)],//deadline 秒
)
.send({ callValue: 1000000 }); //如果第一个是TRX,则value必须填写，且与要兑换的金额一致。如果第一个不是TRX，则value不需要填写。
console.log(result);Last updated