diff --git a/contracts/connectors/addition.sol b/contracts/connectors/addition.sol new file mode 100644 index 0000000..a88d50d --- /dev/null +++ b/contracts/connectors/addition.sol @@ -0,0 +1,78 @@ +pragma solidity ^0.6.0; + +interface MemoryInterface { + function getUint(uint _id) external returns (uint _num); + function setUint(uint _id, uint _val) external; +} + +contract DSMath { + + function add(uint x, uint y) internal pure returns (uint z) { + require((z = x + y) >= x, "math-not-safe"); + } + + function sub(uint x, uint y) internal pure returns (uint z) { + require((z = x - y) <= x, "ds-math-sub-underflow"); + } +} + + +contract Helpers is DSMath { + /** + * @dev Return Memory Variable Address + */ + function getMemoryAddr() internal pure returns (address) { + return 0x8a5419CfC711B2343c17a6ABf4B2bAFaBb06957F; // InstaMemory Address + } + + /** + * @dev Get Uint value from InstaMemory Contract. + */ + function getUint(uint getId, uint val) internal returns (uint returnVal) { + returnVal = getId == 0 ? val : MemoryInterface(getMemoryAddr()).getUint(getId); + } + + /** + * @dev Set Uint value in InstaMemory Contract. + */ + function setUint(uint setId, uint val) internal { + if (setId != 0) MemoryInterface(getMemoryAddr()).setUint(setId, val); + } + + /** + * @dev Connector Details + */ + function connectorID() public pure returns(uint _type, uint _id) { + (_type, _id) = (1, 47); + } +} + +contract BasicResolver is Helpers { + + /** + * @dev Add getIds + * @param setId Set ctoken amount at this ID in `InstaMemory` Contract. + */ + function addIds(uint[] calldata getIds, uint setId) external payable { + uint amt; + for (uint i = 0; i < getIds.length; i++) { + amt = add(amt, getUint(getIds[i], 0)); + } + + setUint(setId, amt); + } + + /** + * @dev Sub getIds + * @param setId Set ctoken amount at this ID in `InstaMemory` Contract. + */ + function subIds(uint getIdOne, uint getIdTwo, uint setId) external payable { + uint amt = add(getUint(getIdOne, 0), getUint(getIdTwo, 0)); + + setUint(setId, amt); + } +} + +contract ConnectAddition is BasicResolver { + string public name = "Addition-v1"; +} \ No newline at end of file