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docs/core/BaseUtils.md

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+# Solidity API
+
+## BaseUtils
+
+### _setUsedTransactions
+
+```solidity
+function _setUsedTransactions(bytes32 message) internal
+```
+
+███ Helper FX ██████████████████████████████████████████████████████████
+
+### usedTransactions
+
+```solidity
+function usedTransactions(bytes32 message) public view returns (bool used)
+```
+
+### _signerCheck
+
+```solidity
+function _signerCheck(bytes32 _message, bytes _signature) internal view
+```
+
+### _merkleVerify
+
+```solidity
+function _merkleVerify(bytes32[] _merkleProof, bytes32 _root, address _addr) internal pure
+```
+
+### _castBool
+
+```solidity
+function _castBool(bool _valid) internal pure returns (uint256 _validCasted)
+```
+
+### getStr
+
+```solidity
+function getStr(string str) public pure returns (bytes32 strEnc)
+```
+
+### _setSellerBalance
+
+```solidity
+function _setSellerBalance(address _sellerKey, contract ERC20 _erc20, uint256 _packed, bytes32 _pixTarget) internal
+```
+
+### _setValidState
+
+```solidity
+function _setValidState(address _sellerKey, contract ERC20 _erc20, uint256 _packed) internal
+```
+
+### _addSellerBalance
+
+```solidity
+function _addSellerBalance(address _sellerKey, contract ERC20 _erc20, uint256 _amount) internal
+```
+
+### _decSellerBalance
+
+```solidity
+function _decSellerBalance(address _sellerKey, contract ERC20 _erc20, uint256 _amount) internal
+```
+
+### __sellerBalance
+
+```solidity
+function __sellerBalance(address _sellerKey, contract ERC20 _erc20) internal view returns (uint256 _packed)
+```
+
+### _castAddrToKey
+
+```solidity
+function _castAddrToKey(address _addr) public pure returns (uint256 _key)
+```
+
+Public method that handles `address`
+to `uint256` safe type casting.
+
+_Function sighash: 0x4b2ae980._
+
+### _castKeyToAddr
+
+```solidity
+function _castKeyToAddr(uint256 _key) public pure returns (address _addr)
+```
+