NoBey/uniswap-v2
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optimistic swaps (#53)

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* alternative flash lending (renting) design

* add rent interface

* fix stack too deep error

rearrange order of k condition math

ignore erroneous out of gas errors in tests

* try removing rent in favor of monolithic swap

IUniswapV2Borrower -> IUniswapV2Callee

update tests

* fix implementation

* clean up math a bit

* amount{0,1}In -> amount{0,1}InNet

* charge on all inputs, not just net

* removed unnecessary safemath

* add to != token check

don't indent in scope

rename reserve{0,1}Next -> reserve{0,1}Adjusted

* > instead of >=

simplify algebra

reserve{0,1}Adjusted -> balance{0,1}Adjusted

add comments

* add some optimistic swap test cases
This commit is contained in:
Noah Zinsmeister
2020-02-17 15:06:43 -07:00
committed by GitHub
parent 3f5feaa369
commit b742e92502
5 changed files with 94 additions and 49 deletions
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5
contracts/interfaces/IUniswapV2Callee.sol Normal file
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@ -0,0 +1,5 @@
pragma solidity =0.5.16;
interface IUniswapV2Callee {
function uniswapV2Call(address sender, uint amount0, uint amount1, bytes calldata data) external;
}

11
contracts/interfaces/IUniswapV2Exchange.sol
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@ -23,7 +23,14 @@ interface IUniswapV2Exchange {
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(address indexed sender, address indexed tokenIn, uint amountIn, uint amountOut, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
@ -37,7 +44,7 @@ interface IUniswapV2Exchange {
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(address tokenIn, uint amountOut, address to) external;
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;