Function: sellTokens(address token, uint256 amount)

The function allows the caller to sell tokens they own associated with a specific hashtag. The current sell price is calculated differently than the buy price, and it is the minimum of two prices: the first one depends on the current liquidity and full price of all tokens, and the second depends on viralityScore and supply. The function is available only whenNotPaused.

Inputs

• token

  • Validation: onlyRegistered(token).

  • Impact: The hashtag token address that the caller wants to sell.

• amount

  • Validation: If the balance of the caller IERC20(token).balanceOf(msg.sender) is less than amount, the function will revert.

  • Impact: The amount of token to buy.

Branches and code coverage (including function calls)

Intended branches

• The caller received the expected amount of paymentToken.

  Test coverage

Negative behavior

• The caller does not own enough hashtag tokens to sell.

  Test coverage

• The token is not registered.

  Test coverage

• The contract is paused.

  Test coverage

Function call analysis

• getSellPrice(token, amount)

  • External/Internal? Internal.

  • Argument control? token and amount.

  • Impact: Calculates the current price for selling the specified amount of tokens.

• IERC20(token).balanceOf(msg.sender)

  • External/Internal? External.

  • Argument control? token and amount.

  • Impact: Returns the current hashtag token balance for the caller account to be sure that the caller owns enough tokens.

• TrendingERC20(token).burn(msg.sender, amount)

  • External/Internal? External.

  • Argument control? token and amount.

  • Impact: Burn the hashtag tokens from the caller account.

• IERC20(paymentToken).safeTransfer(msg.sender, totalPrice);

  • External/Internal? External.

  • Argument control? N/A.

  • Impact: Transfers the amount of paymentToken for the token sale to the caller of the function.