255 lines
11 KiB
Solidity
255 lines
11 KiB
Solidity
pragma solidity ^0.5.0;
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interface IUniswapExchange {
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event TokenPurchase(address indexed buyer, uint256 indexed eth_sold, uint256 indexed tokens_bought);
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event EthPurchase(address indexed buyer, uint256 indexed tokens_sold, uint256 indexed eth_bought);
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event AddLiquidity(address indexed provider, uint256 indexed eth_amount, uint256 indexed token_amount);
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event RemoveLiquidity(address indexed provider, uint256 indexed eth_amount, uint256 indexed token_amount);
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/**
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* @notice Convert ETH to Tokens.
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* @dev User specifies exact input (msg.value).
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* @dev User cannot specify minimum output or deadline.
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*/
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function () external payable;
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/**
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* @dev Pricing function for converting between ETH && Tokens.
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* @param inputAmount Amount of ETH or Tokens being sold.
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* @param inputReserve Amount of ETH or Tokens (input type) in exchange reserves.
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* @param outputReserve Amount of ETH or Tokens (output type) in exchange reserves.
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* @return Amount of ETH or Tokens bought.
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*/
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function getInputPrice(uint256 inputAmount, uint256 inputReserve, uint256 outputReserve) external view returns (uint256);
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/**
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* @dev Pricing function for converting between ETH && Tokens.
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* @param outputAmount Amount of ETH or Tokens being bought.
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* @param inputReserve Amount of ETH or Tokens (input type) in exchange reserves.
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* @param outputReserve Amount of ETH or Tokens (output type) in exchange reserves.
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* @return Amount of ETH or Tokens sold.
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*/
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function getOutputPrice(uint256 outputAmount, uint256 inputReserve, uint256 outputReserve) external view returns (uint256);
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/**
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* @notice Convert ETH to Tokens.
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* @dev User specifies exact input (msg.value) && minimum output.
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* @param minTokens Minimum Tokens bought.
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* @param deadline Time after which this transaction can no longer be executed.
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* @return Amount of Tokens bought.
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*/
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function ethToTokenSwapInput(uint256 minTokens, uint256 deadline) external payable returns (uint256);
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/**
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* @notice Convert ETH to Tokens && transfers Tokens to recipient.
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* @dev User specifies exact input (msg.value) && minimum output
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* @param minTokens Minimum Tokens bought.
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* @param deadline Time after which this transaction can no longer be executed.
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* @param recipient The address that receives output Tokens.
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* @return Amount of Tokens bought.
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*/
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function ethToTokenTransferInput(uint256 minTokens, uint256 deadline, address recipient) external payable returns(uint256);
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/**
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* @notice Convert ETH to Tokens.
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* @dev User specifies maximum input (msg.value) && exact output.
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* @param tokensBought Amount of tokens bought.
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* @param deadline Time after which this transaction can no longer be executed.
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* @return Amount of ETH sold.
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*/
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function ethToTokenSwapOutput(uint256 tokensBought, uint256 deadline) external payable returns(uint256);
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/**
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* @notice Convert ETH to Tokens && transfers Tokens to recipient.
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* @dev User specifies maximum input (msg.value) && exact output.
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* @param tokensBought Amount of tokens bought.
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* @param deadline Time after which this transaction can no longer be executed.
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* @param recipient The address that receives output Tokens.
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* @return Amount of ETH sold.
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*/
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function ethToTokenTransferOutput(uint256 tokensBought, uint256 deadline, address recipient) external payable returns (uint256);
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/**
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* @notice Convert Tokens to ETH.
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* @dev User specifies exact input && minimum output.
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* @param tokensSold Amount of Tokens sold.
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* @param minEth Minimum ETH purchased.
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* @param deadline Time after which this transaction can no longer be executed.
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* @return Amount of ETH bought.
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*/
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function tokenToEthSwapInput(uint256 tokensSold, uint256 minEth, uint256 deadline) external returns (uint256);
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/**
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* @notice Convert Tokens to ETH && transfers ETH to recipient.
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* @dev User specifies exact input && minimum output.
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* @param tokensSold Amount of Tokens sold.
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* @param minEth Minimum ETH purchased.
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* @param deadline Time after which this transaction can no longer be executed.
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* @param recipient The address that receives output ETH.
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* @return Amount of ETH bought.
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*/
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function tokenToEthTransferInput(uint256 tokensSold, uint256 minEth, uint256 deadline, address recipient) external returns (uint256);
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/**
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* @notice Convert Tokens to ETH.
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* @dev User specifies maximum input && exact output.
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* @param ethBought Amount of ETH purchased.
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* @param maxTokens Maximum Tokens sold.
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* @param deadline Time after which this transaction can no longer be executed.
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* @return Amount of Tokens sold.
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*/
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function tokenToEthSwapOutput(uint256 ethBought, uint256 maxTokens, uint256 deadline) external returns (uint256);
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/**
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* @notice Convert Tokens to ETH && transfers ETH to recipient.
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* @dev User specifies maximum input && exact output.
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* @param ethBought Amount of ETH purchased.
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* @param maxTokens Maximum Tokens sold.
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* @param deadline Time after which this transaction can no longer be executed.
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* @param recipient The address that receives output ETH.
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* @return Amount of Tokens sold.
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*/
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function tokenToEthTransferOutput(uint256 ethBought, uint256 maxTokens, uint256 deadline, address recipient) external returns (uint256);
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/**
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* @notice Convert Tokens (token) to Tokens (tokenAddr).
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* @dev User specifies exact input && minimum output.
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* @param tokensSold Amount of Tokens sold.
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* @param minTokensBought Minimum Tokens (tokenAddr) purchased.
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* @param minEthBought Minimum ETH purchased as intermediary.
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* @param deadline Time after which this transaction can no longer be executed.
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* @param tokenAddr The address of the token being purchased.
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* @return Amount of Tokens (tokenAddr) bought.
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*/
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function tokenToTokenSwapInput(
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uint256 tokensSold,
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uint256 minTokensBought,
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uint256 minEthBought,
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uint256 deadline,
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address tokenAddr)
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external returns (uint256);
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/**
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* @notice Convert Tokens (token) to Tokens (tokenAddr) && transfers
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* Tokens (tokenAddr) to recipient.
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* @dev User specifies exact input && minimum output.
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* @param tokensSold Amount of Tokens sold.
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* @param minTokensBought Minimum Tokens (tokenAddr) purchased.
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* @param minEthBought Minimum ETH purchased as intermediary.
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* @param deadline Time after which this transaction can no longer be executed.
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* @param recipient The address that receives output ETH.
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* @param tokenAddr The address of the token being purchased.
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* @return Amount of Tokens (tokenAddr) bought.
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*/
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function tokenToTokenTransferInput(
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uint256 tokensSold,
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uint256 minTokensBought,
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uint256 minEthBought,
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uint256 deadline,
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address recipient,
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address tokenAddr)
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external returns (uint256);
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/**
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* @notice Convert Tokens (token) to Tokens (tokenAddr).
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* @dev User specifies maximum input && exact output.
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* @param tokensBought Amount of Tokens (tokenAddr) bought.
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* @param maxTokensSold Maximum Tokens (token) sold.
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* @param maxEthSold Maximum ETH purchased as intermediary.
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* @param deadline Time after which this transaction can no longer be executed.
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* @param tokenAddr The address of the token being purchased.
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* @return Amount of Tokens (token) sold.
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*/
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function tokenToTokenSwapOutput(
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uint256 tokensBought,
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uint256 maxTokensSold,
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uint256 maxEthSold,
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uint256 deadline,
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address tokenAddr)
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external returns (uint256);
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/**
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* @notice Convert Tokens (token) to Tokens (tokenAddr) && transfers
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* Tokens (tokenAddr) to recipient.
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* @dev User specifies maximum input && exact output.
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* @param tokensBought Amount of Tokens (tokenAddr) bought.
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* @param maxTokensSold Maximum Tokens (token) sold.
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* @param maxEthSold Maximum ETH purchased as intermediary.
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* @param deadline Time after which this transaction can no longer be executed.
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* @param recipient The address that receives output ETH.
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* @param tokenAddr The address of the token being purchased.
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* @return Amount of Tokens (token) sold.
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*/
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function tokenToTokenTransferOutput(
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uint256 tokensBought,
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uint256 maxTokensSold,
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uint256 maxEthSold,
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uint256 deadline,
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address recipient,
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address tokenAddr)
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external returns (uint256);
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/**
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* @notice Public price function for ETH to Token trades with an exact input.
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* @param ethSold Amount of ETH sold.
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* @return Amount of Tokens that can be bought with input ETH.
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*/
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function getEthToTokenInputPrice(uint256 ethSold) external view returns (uint256);
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/**
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* @notice Public price function for ETH to Token trades with an exact output.
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* @param tokensBought Amount of Tokens bought.
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* @return Amount of ETH needed to buy output Tokens.
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*/
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function getEthToTokenOutputPrice(uint256 tokensBought) external view returns (uint256);
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/**
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* @notice Public price function for Token to ETH trades with an exact input.
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* @param tokensSold Amount of Tokens sold.
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* @return Amount of ETH that can be bought with input Tokens.
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*/
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function getTokenToEthInputPrice(uint256 tokensSold) external view returns (uint256);
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/**
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* @notice Public price function for Token to ETH trades with an exact output.
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* @param ethBought Amount of output ETH.
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* @return Amount of Tokens needed to buy output ETH.
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*/
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function getTokenToEthOutputPrice(uint256 ethBought) external view returns (uint256);
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/**
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* @return Address of Token that is sold on this exchange.
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*/
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function tokenAddress() external view returns (address);
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/**
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* @return Address of factory that created this exchange.
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*/
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function factoryAddress() external view returns (address);
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/**
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* @notice Deposit ETH && Tokens (token) at current ratio to mint UNI tokens.
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* @dev minLiquidity does nothing when total UNI supply is 0.
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* @param minLiquidity Minimum number of UNI sender will mint if total UNI supply is greater than 0.
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* @param maxTokens Maximum number of tokens deposited. Deposits max amount if total UNI supply is 0.
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* @param deadline Time after which this transaction can no longer be executed.
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* @return The amount of UNI minted.
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*/
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function addLiquidity(uint256 minLiquidity, uint256 maxTokens, uint256 deadline) external payable returns (uint256);
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/**
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* @dev Burn UNI tokens to withdraw ETH && Tokens at current ratio.
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* @param amount Amount of UNI burned.
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* @param minEth Minimum ETH withdrawn.
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* @param minTokens Minimum Tokens withdrawn.
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* @param deadline Time after which this transaction can no longer be executed.
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* @return The amount of ETH && Tokens withdrawn.
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*/
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function removeLiquidity(uint256 amount, uint256 minEth, uint256 minTokens, uint256 deadline) external returns (uint256, uint256);
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}
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