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concatUint and fromUint methods #44

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concatUint and fromUint methods #44

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63 changes: 63 additions & 0 deletions contracts/BytesLib.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -317,6 +317,15 @@ library BytesLib {
}

return tempUint;
}

function concatUint8(bytes memory _preBytes, uint8 _val) internal pure returns (bytes memory) {
bytes memory _postBytes = abi.encodePacked(_val);
return concat(_preBytes, _postBytes);
}

function fromUint8(uint8 _val) internal pure returns (bytes memory) {
return abi.encodePacked(_val);
}

function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) {
Expand All @@ -331,6 +340,15 @@ library BytesLib {
return tempUint;
}

function concatUint16(bytes memory _preBytes, uint16 _val) internal pure returns (bytes memory) {
bytes memory _postBytes = abi.encodePacked(_val);
return concat(_preBytes, _postBytes);
}

function fromUint16(uint16 _val) internal pure returns (bytes memory) {
return abi.encodePacked(_val);
}

function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) {
require(_start + 4 >= _start, "toUint32_overflow");
require(_bytes.length >= _start + 4, "toUint32_outOfBounds");
Expand All @@ -342,6 +360,15 @@ library BytesLib {

return tempUint;
}

function concatUint32(bytes memory _preBytes, uint8 _val) internal pure returns (bytes memory) {
bytes memory _postBytes = abi.encodePacked(_val);
return concat(_preBytes, _postBytes);
}

function fromUint32(uint32 _val) internal pure returns (bytes memory) {
return abi.encodePacked(_val);
}

function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) {
require(_start + 8 >= _start, "toUint64_overflow");
Expand All @@ -354,6 +381,15 @@ library BytesLib {

return tempUint;
}

function concatUint64(bytes memory _preBytes, uint64 _val) internal pure returns (bytes memory) {
bytes memory _postBytes = abi.encodePacked(_val);
return concat(_preBytes, _postBytes);
}

function fromUint64(uint64 _val) internal pure returns (bytes memory) {
return abi.encodePacked(_val);
}

function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) {
require(_start + 12 >= _start, "toUint96_overflow");
Expand All @@ -367,6 +403,15 @@ library BytesLib {
return tempUint;
}

function concatUint96(bytes memory _preBytes, uint96 _val) internal pure returns (bytes memory) {
bytes memory _postBytes = abi.encodePacked(_val);
return concat(_preBytes, _postBytes);
}

function fromUint96(uint96 _val) internal pure returns (bytes memory) {
return abi.encodePacked(_val);
}

function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) {
require(_start + 16 >= _start, "toUint128_overflow");
require(_bytes.length >= _start + 16, "toUint128_outOfBounds");
Expand All @@ -379,6 +424,15 @@ library BytesLib {
return tempUint;
}

function concatUint128(bytes memory _preBytes, uint128 _val) internal pure returns (bytes memory) {
bytes memory _postBytes = abi.encodePacked(_val);
return concat(_preBytes, _postBytes);
}

function fromUint128(uint128 _val) internal pure returns (bytes memory) {
return abi.encodePacked(_val);
}

function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) {
require(_start + 32 >= _start, "toUint256_overflow");
require(_bytes.length >= _start + 32, "toUint256_outOfBounds");
Expand All @@ -390,6 +444,15 @@ library BytesLib {

return tempUint;
}

function concatUint256(bytes memory _preBytes, uint256 _val) internal pure returns (bytes memory) {
bytes memory _postBytes = abi.encodePacked(_val);
return concat(_preBytes, _postBytes);
}

function fromUint256(uint256 _val) internal pure returns (bytes memory) {
return abi.encodePacked(_val);
}

function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) {
require(_start + 32 >= _start, "toBytes32_overflow");
Expand Down