34 lines
1 KiB
Solidity
34 lines
1 KiB
Solidity
|
// SPDX-License-Identifier: GPL-3.0-or-later
|
||
|
|
pragma solidity ^0.8.19;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @title FormatLib
|
||
|
|
* @notice Shared integer-to-string formatting helpers for backtesting log output.
|
||
|
|
* Extracted to avoid copy-pasting the same logic across PositionTracker
|
||
|
|
* and StrategyExecutor.
|
||
|
|
*/
|
||
|
|
library FormatLib {
|
||
|
|
/// @notice Format an unsigned integer as a decimal string.
|
||
|
|
function str(uint256 v) internal pure returns (string memory) {
|
||
|
|
if (v == 0) return "0";
|
||
|
|
uint256 tmp = v;
|
||
|
|
uint256 len;
|
||
|
|
while (tmp != 0) {
|
||
|
|
len++;
|
||
|
|
tmp /= 10;
|
||
|
|
}
|
||
|
|
bytes memory buf = new bytes(len);
|
||
|
|
while (v != 0) {
|
||
|
|
buf[--len] = bytes1(uint8(48 + v % 10));
|
||
|
|
v /= 10;
|
||
|
|
}
|
||
|
|
return string(buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// @notice Format a signed integer as a decimal string (prefixed with '-' if negative).
|
||
|
|
function istr(int256 v) internal pure returns (string memory) {
|
||
|
|
if (v >= 0) return str(uint256(v));
|
||
|
|
return string.concat("-", str(uint256(-v)));
|
||
|
|
}
|
||
|
|
}
|