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AMM ERC

The AMMs are used to swap a pegged token to the tenXXX version of the token and the other way around.

Functions

  • toggleBuy() external onlyOwner returns (bool)
  • canBuy() external view returns (bool)
  • getTenToken() external view returns (address)
  • buy(uint256 tokenAmount) external nonReentrant returns (bool)
  • sell(uint256 amount) external nonReentrant returns (bool)
  • getInPrice(uint256 amount) external view returns (uint256)
  • getOutPrice(uint256 amount) external view returns (uint256)

toggleBuy() external onlyOwner returns (bool)

Toggles the possibility to buy over the amm.
function toggleBuy() external onlyOwner returns (bool) {
_canBuy = !_canBuy;
return _canBuy;
}

canBuy() external view returns (bool)

Getter for the possibility to buy over the amm.
function canBuy() external view returns (bool) {
return _canBuy;
}

getTenToken() external view returns (address)

Returns the ten-Token address.
function getTenToken() external view returns (address) {
return address(_tenToken);
}

buy(uint256 tokenAmount) external nonReentrant returns (bool)

Mints new ten-Tokens for the sent ERC20 tokens.
function buy(uint256 tokenAmount) external nonReentrant returns (bool) {
require(_canBuy == true, "The buying function is not activated");
IERC20Upgradeable(_inToken).safeTransferFrom(msg.sender, address(this), tokenAmount);
_tenToken.mint(msg.sender, tokenAmount);
emit Bought(msg.sender, tokenAmount);
return true;
}

sell(uint256 amount) external nonReentrant returns (bool)

Burns ten-Tokens and sends the ERC20 token amount.
function sell(uint256 amount) external nonReentrant returns (bool) {
require(_inToken.balanceOf(address(this)) >= amount / 10**_calcDecimals, "sell: Too few pegged tokens locked");
require(_tenToken.totalSupply() >= amount, "sell: That's too much");
uint256 toSend = _tenToken.burn(msg.sender, amount);
IERC20Upgradeable(_inToken).safeTransfer(msg.sender, toSend);
emit Sold(msg.sender, toSend);
return true;
}

getInPrice(uint256 amount) external view returns (uint256)

Returns the actual price for swapping pegged token to ten-Token which can change.
function getInPrice(uint256 amount) external view returns (uint256) {
uint256 divisor;
uint256 multiplier;
(divisor, multiplier) = _tenToken.getActualBuyFees();
uint256 fee = amount * multiplier / divisor;
uint256 price = amount - fee;
return price * 10**_calcDecimals;
}

getOutPrice(uint256 amount) external view returns (uint256)

Returns the actual price for swapping ten-Token to pegged token which can change.
function getOutPrice(uint256 amount) external view returns (uint256) {
uint32 divisor;
uint32 multiplier;
(divisor, multiplier) = _tenToken.getActualSellFees();
uint256 fee = amount * multiplier / divisor;
uint256 price = amount - fee;
return price / 10**_calcDecimals;
}