假设我有这个固态合约，我想计算minAmountOut2的结果，而不实际支付gas gas费。有可能实现吗?我认为这应该是理论上可行的，但我不确定如何实现它实际上....谢谢!
pragma solidity >=0.7.0 <0.9.0;
contract Storage {
constructor() payable {
// uint256 number;
address wbnb_addres = 0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c;
address pancake_swap_v2 = 0x10ED43C718714eb63d5aA57B78B54704E256024E;
uint amount = msg.value ;
address target_token_address = 0x0E09FaBB73Bd3Ade0a17ECC321fD13a19e81cE82;
address sender_address = tx.origin;
address[] memory address_input = new address[](2);
address_input[0] = wbnb_addres;
address_input[1] = target_token_address;
uint[] memory result = IPancakeRouter02(pancake_swap_v2).getAmountsOut(amount,address_input);
uint minAmountOut = result[1];
uint deadline = 1e30;
address[] memory address_output2 = new address[](2);
address_output2[0] = target_token_address;
address_output2[1] = wbnb_addres;
uint[] memory result2 = IPancakeRouter02(pancake_swap_v2).getAmountsOut(minAmountOut,address_output2);
uint minAmountOut2 = result2[1];
}
}
一种可能的方法是将结果转换为字符串并触发一个revert函数....然后当我在web3中运行estimatgas函数时，我得到了使用错误和异常处理的结果。
据我所知，estimateGas是唯一这样的函数。估计as应该几乎等于web3.eth。sendTransaction，它们之间的唯一区别是estimateGas实际上不发送事务，如果您的操作在调用函数时失败，则无法通过estimateGas获得有效结果。
现在构造函数中已经有了所有的代码。您可能希望将代码分成更小的函数，然后调用estimateGas。