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add back slight optimization in buy/sell curve calc

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This commit is contained in:
Owen
2022-04-07 00:16:08 -07:00
parent 03d0ec346f
commit 14c0cae231
1 changed files with 20 additions and 11 deletions
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src/LSSVMPair.sol
+20 -11
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@@ -451,6 +451,8 @@ abstract contract LSSVMPair is Ownable, ReentrancyGuard {
ILSSVMPairFactoryLike _factory
) internal returns (uint256 protocolFee, uint256 inputAmount) {
CurveErrorCodes.Error error;
// Save on 1 SLOAD by caching current spot price locally
uint128 currentSpotPrice = spotPrice;
uint128 newSpotPrice;
uint128 newDelta;
(
@@ -460,7 +462,7 @@ abstract contract LSSVMPair is Ownable, ReentrancyGuard {
inputAmount,
protocolFee
) = _bondingCurve.getBuyInfo(
spotPrice,
currentSpotPrice,
delta,
numNFTs,
fee,
@@ -476,7 +478,7 @@ abstract contract LSSVMPair is Ownable, ReentrancyGuard {
require(inputAmount <= maxExpectedTokenInput, "In too many tokens");
// Update spot price if it has been updated
if (spotPrice != newSpotPrice) {
if (currentSpotPrice != newSpotPrice) {
spotPrice = newSpotPrice;
emit SpotPriceUpdate(newSpotPrice);
}
@@ -504,16 +506,23 @@ abstract contract LSSVMPair is Ownable, ReentrancyGuard {
ILSSVMPairFactoryLike _factory
) internal returns (uint256 protocolFee, uint256 outputAmount) {
CurveErrorCodes.Error error;
// Save on 1 SLOAD by caching current spot price locally
uint128 currentSpotPrice = spotPrice;
uint128 newSpotPrice;
uint128 newDelta;
(error, newSpotPrice, newDelta, outputAmount, protocolFee) = _bondingCurve
.getSellInfo(
spotPrice,
delta,
numNFTs,
fee,
_factory.protocolFeeMultiplier()
);
(
error,
newSpotPrice,
newDelta,
outputAmount,
protocolFee
) = _bondingCurve.getSellInfo(
currentSpotPrice,
delta,
numNFTs,
fee,
_factory.protocolFeeMultiplier()
);
// Revert if bonding curve had an error
if (error != CurveErrorCodes.Error.OK) {
@@ -527,7 +536,7 @@ abstract contract LSSVMPair is Ownable, ReentrancyGuard {
);
// Update spot price if it has been updated
if (spotPrice != newSpotPrice) {
if (currentSpotPrice != newSpotPrice) {
spotPrice = newSpotPrice;
emit SpotPriceUpdate(newSpotPrice);
}