/
SwapHelperFacet.sol
554 lines (459 loc) · 21.5 KB
/
SwapHelperFacet.sol
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// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.19;
import "src/lib/Token.sol";
import "src/lib/PoolBalanceLib.sol";
import "src/interfaces/IPool.sol";
import "src/interfaces/ISwap.sol";
import "src/interfaces/IConverter.sol";
import "src/interfaces/IVC.sol";
import "src/interfaces/IVault.sol";
import "src/interfaces/IFacet.sol";
import "src/VaultStorage.sol";
import "src/pools/constant-product/ConstantProductPoolFactory.sol";
import "openzeppelin-contracts/contracts/utils/math/SafeCast.sol";
import "openzeppelin-contracts/contracts/utils/math/Math.sol";
contract SwapHelperFacet is VaultStorage, IFacet {
using UncheckedMemory for Token[];
address immutable thisImplementation;
ConstantProductPoolFactory public immutable factory;
constructor(ConstantProductPoolFactory factory_) {
factory = factory_;
thisImplementation = address(this);
}
/**
* @dev called by AdminFacet.admin_addFacet().
* doesnt get added to the routing table, hence the lack of access control.
*/
function initializeFacet() external {
_setFunction(SwapHelperFacet(this).execute1.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).execute2.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).execute3.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).query1.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).query2.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).query3.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).swapExactTokensForTokens.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).swapTokensForExactTokens.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).swapExactETHForTokens.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).swapTokensForExactETH.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).swapExactTokensForETH.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).swapETHForExactTokens.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).getPair.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).allPairs.selector, thisImplementation);
_setFunction(SwapHelperFacet(this).allPairsLength.selector, thisImplementation);
}
function execute1(IPool pool, uint8 method, address t1, uint8 m1, int128 a1, bytes memory data)
public
payable
returns (int128[] memory)
{
Token[] memory tokens = new Token[](1);
VelocoreOperation[] memory ops = new VelocoreOperation[](1);
tokens[0] = t1 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t1));
ops[0].poolId = bytes32(bytes1(method)) | bytes32(uint256(uint160(address(pool))));
ops[0].tokenInformations = new bytes32[](1);
ops[0].data = data;
ops[0].tokenInformations[0] =
bytes32(bytes1(0x00)) | bytes32(bytes2(uint16(m1))) | bytes32(uint256(uint128(uint256(int256(a1)))));
return execute(tokens, new int128[](1), ops);
}
function query1(IPool pool, uint8 method, address t1, uint8 m1, int128 a1, bytes memory data)
public
returns (int128[] memory)
{
Token[] memory tokens = new Token[](1);
VelocoreOperation[] memory ops = new VelocoreOperation[](1);
tokens[0] = t1 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t1));
ops[0].poolId = bytes32(bytes1(method)) | bytes32(uint256(uint160(address(pool))));
ops[0].tokenInformations = new bytes32[](1);
ops[0].data = data;
ops[0].tokenInformations[0] =
bytes32(bytes1(0x00)) | bytes32(bytes2(uint16(m1))) | bytes32(uint256(uint128(uint256(int256(a1)))));
return query(tokens, new int128[](1), ops);
}
function execute2(
IPool pool,
uint8 method,
address t1,
uint8 m1,
int128 a1,
address t2,
uint8 m2,
int128 a2,
bytes memory data
) public payable returns (int128[] memory) {
Token[] memory tokens = new Token[](2);
VelocoreOperation[] memory ops = new VelocoreOperation[](1);
tokens[0] = t1 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t1));
tokens[1] = t2 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t2));
ops[0].poolId = bytes32(bytes1(method)) | bytes32(uint256(uint160(address(pool))));
ops[0].tokenInformations = new bytes32[](2);
ops[0].data = data;
ops[0].tokenInformations[0] =
bytes32(bytes1(0x00)) | bytes32(bytes2(uint16(m1))) | bytes32(uint256(uint128(uint256(int256(a1)))));
ops[0].tokenInformations[1] =
bytes32(bytes1(0x01)) | bytes32(bytes2(uint16(m2))) | bytes32(uint256(uint128(uint256(int256(a2)))));
return execute(tokens, new int128[](2), ops);
}
function query2(
IPool pool,
uint8 method,
address t1,
uint8 m1,
int128 a1,
address t2,
uint8 m2,
int128 a2,
bytes memory data
) public returns (int128[] memory) {
Token[] memory tokens = new Token[](2);
VelocoreOperation[] memory ops = new VelocoreOperation[](1);
tokens[0] = t1 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t1));
tokens[1] = t2 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t2));
ops[0].poolId = bytes32(bytes1(method)) | bytes32(uint256(uint160(address(pool))));
ops[0].tokenInformations = new bytes32[](2);
ops[0].data = data;
ops[0].tokenInformations[0] =
bytes32(bytes1(0x00)) | bytes32(bytes2(uint16(m1))) | bytes32(uint256(uint128(uint256(int256(a1)))));
ops[0].tokenInformations[1] =
bytes32(bytes1(0x01)) | bytes32(bytes2(uint16(m2))) | bytes32(uint256(uint128(uint256(int256(a2)))));
return query(tokens, new int128[](2), ops);
}
function execute3(
IPool pool,
uint8 method,
address t1,
uint8 m1,
int128 a1,
address t2,
uint8 m2,
int128 a2,
address t3,
uint8 m3,
int128 a3,
bytes memory data
) public payable returns (int128[] memory) {
Token[] memory tokens = new Token[](3);
VelocoreOperation[] memory ops = new VelocoreOperation[](1);
tokens[0] = t1 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t1));
tokens[1] = t2 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t2));
tokens[2] = t3 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t3));
ops[0].poolId = bytes32(bytes1(method)) | bytes32(uint256(uint160(address(pool))));
ops[0].tokenInformations = new bytes32[](3);
ops[0].data = data;
ops[0].tokenInformations[0] =
bytes32(bytes1(0x00)) | bytes32(bytes2(uint16(m1))) | bytes32(uint256(uint128(uint256(int256(a1)))));
ops[0].tokenInformations[1] =
bytes32(bytes1(0x01)) | bytes32(bytes2(uint16(m2))) | bytes32(uint256(uint128(uint256(int256(a2)))));
ops[0].tokenInformations[2] =
bytes32(bytes1(0x02)) | bytes32(bytes2(uint16(m3))) | bytes32(uint256(uint128(uint256(int256(a3)))));
return execute(tokens, new int128[](3), ops);
}
function query3(
IPool pool,
uint8 method,
address t1,
uint8 m1,
int128 a1,
address t2,
uint8 m2,
int128 a2,
address t3,
uint8 m3,
int128 a3,
bytes memory data
) public returns (int128[] memory) {
Token[] memory tokens = new Token[](3);
VelocoreOperation[] memory ops = new VelocoreOperation[](1);
tokens[0] = t1 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t1));
tokens[1] = t2 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t2));
tokens[2] = t3 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t3));
ops[0].poolId = bytes32(bytes1(method)) | bytes32(uint256(uint160(address(pool))));
ops[0].tokenInformations = new bytes32[](3);
ops[0].data = data;
ops[0].tokenInformations[0] =
bytes32(bytes1(0x00)) | bytes32(bytes2(uint16(m1))) | bytes32(uint256(uint128(uint256(int256(a1)))));
ops[0].tokenInformations[1] =
bytes32(bytes1(0x01)) | bytes32(bytes2(uint16(m2))) | bytes32(uint256(uint128(uint256(int256(a2)))));
ops[0].tokenInformations[2] =
bytes32(bytes1(0x02)) | bytes32(bytes2(uint16(m3))) | bytes32(uint256(uint128(uint256(int256(a3)))));
return query(tokens, new int128[](3), ops);
}
function execute(Token[] memory tokens, int128[] memory deposits, VelocoreOperation[] memory ops)
internal
returns (int128[] memory ret)
{
bytes memory cd = abi.encodeWithSelector(IVault.execute.selector, tokens, deposits, ops);
ret = new int128[](tokens.length);
uint256 len = tokens.length * 32;
assembly {
let success := delegatecall(gas(), address(), add(cd, 32), mload(cd), 0, 0)
if iszero(success) {
returndatacopy(0, 0, returndatasize())
revert(0, returndatasize())
}
returndatacopy(ret, 32, add(32, len))
}
}
function query(Token[] memory tokens, int128[] memory deposits, VelocoreOperation[] memory ops)
internal
returns (int128[] memory ret)
{
bytes memory cd = abi.encodeWithSelector(IVault.query.selector, msg.sender, tokens, deposits, ops);
ret = new int128[](tokens.length);
uint256 len = tokens.length * 32;
assembly {
let success := delegatecall(gas(), address(), add(cd, 32), mload(cd), 0, 0)
if iszero(success) {
returndatacopy(0, 0, returndatasize())
revert(0, returndatasize())
}
returndatacopy(ret, 32, add(32, len))
}
}
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] memory path,
address to,
uint256 deadline
) public returns (uint256[] memory amounts) {
require(to == msg.sender, "'to' must be msg.sender");
require(deadline > block.timestamp, "deadline");
require(path.length >= 2 && path.length < 256, "invalid path length");
require(
amountIn < uint256(int256(type(int128).max)) && amountOutMin < uint256(int256(type(int128).max)) - 1,
"invalid path length"
);
Token[] memory tokens;
assembly {
tokens := path
}
VelocoreOperation[] memory ops = new VelocoreOperation[](path.length - 1);
for (uint256 i = 0; i < path.length; i++) {
if (path[i] == address(0)) {
tokens.u(i, NATIVE_TOKEN);
}
}
for (uint256 i = 0; i < ops.length; i++) {
ops[i].poolId = bytes32(uint256(uint160(address(factory.pools(tokens.u(i), tokens.u(i + 1))))));
ops[i].tokenInformations = new bytes32[](2);
ops[i].data = "";
ops[i].tokenInformations[0] = bytes32(bytes1(uint8(i))) | bytes32(bytes2(uint16(2)))
| bytes32(uint256(uint128(uint256(int256(type(int128).max)))));
ops[i].tokenInformations[1] = bytes32(bytes1(uint8(i + 1))) | bytes32(bytes2(uint16(1)));
}
ops[ops.length - 1].tokenInformations[1] = bytes32(bytes1(uint8(ops.length))) | bytes32(bytes2(uint16(1)))
| bytes32(uint256(uint128(uint256(-int256(amountOutMin)))));
int128[] memory deposit = new int128[](tokens.length);
deposit[0] = int128(int256(amountIn));
amounts = new uint256[](tokens.length);
amounts[tokens.length - 1] = uint256(int256(execute(tokens, deposit, ops)[tokens.length - 1]));
amounts[0] = amountIn;
}
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] memory path,
address to,
uint256 deadline
) public returns (uint256[] memory amounts) {
require(to == msg.sender, "'to' must be msg.sender");
require(deadline > block.timestamp, "deadline");
require(path.length >= 2 && path.length < 256, "invalid path length");
require(
amountInMax < uint256(int256(type(int128).max)) && amountOut < uint256(int256(type(int128).max)) - 1,
"invalid path length"
);
Token[] memory tokens;
assembly {
tokens := path
}
VelocoreOperation[] memory ops = new VelocoreOperation[](path.length - 1);
for (uint256 i = 0; i < path.length; i++) {
if (path[i] == address(0)) {
tokens.u(i, NATIVE_TOKEN);
}
}
for (uint256 i = 0; i < ops.length; i++) {
ops[i].poolId = bytes32(
uint256(uint160(address(factory.pools(tokens.u(ops.length - i - 1), tokens.u(ops.length - i)))))
);
ops[i].tokenInformations = new bytes32[](2);
ops[i].data = "";
ops[i].tokenInformations[0] = bytes32(bytes1(uint8(ops.length - i - 1))) | bytes32(bytes2(uint16(1)))
| bytes32(uint256(uint128(uint256(int256(type(int128).max)))));
ops[i].tokenInformations[1] = bytes32(bytes1(uint8(ops.length - i))) | bytes32(bytes2(uint16(2)));
}
ops[ops.length - 1].tokenInformations[0] = bytes32(bytes1(uint8(0))) | bytes32(bytes2(uint16(1)))
| bytes32(uint256(uint128(uint256(int256(amountInMax)))));
ops[0].tokenInformations[1] = bytes32(bytes1(uint8(ops.length))) | bytes32(bytes2(uint16(0)))
| bytes32(uint256(uint128(uint256(-int256(amountOut)))));
int128[] memory deposit = new int128[](tokens.length);
amounts = new uint256[](tokens.length);
amounts[0] = uint256(int256(execute(tokens, deposit, ops)[0]));
amounts[tokens.length - 1] = amountOut;
}
function swapExactETHForTokens(uint256 amountOutMin, address[] memory path, address to, uint256 deadline)
external
payable
returns (uint256[] memory amounts)
{
require(to == msg.sender, "'to' must be msg.sender");
require(deadline > block.timestamp, "deadline");
require(path.length >= 2 && path.length < 256, "invalid path length");
require(
msg.value < uint256(int256(type(int128).max)) && amountOutMin < uint256(int256(type(int128).max)) - 1,
"invalid path length"
);
Token[] memory tokens;
assembly {
tokens := path
}
VelocoreOperation[] memory ops = new VelocoreOperation[](path.length - 1);
for (uint256 i = 0; i < path.length; i++) {
if (path[i] == address(0)) {
tokens.u(i, NATIVE_TOKEN);
}
}
for (uint256 i = 0; i < ops.length; i++) {
ops[i].poolId = bytes32(uint256(uint160(address(factory.pools(tokens.u(i), tokens.u(i + 1))))));
ops[i].tokenInformations = new bytes32[](2);
ops[i].data = "";
ops[i].tokenInformations[0] = bytes32(bytes1(uint8(i))) | bytes32(bytes2(uint16(2)))
| bytes32(uint256(uint128(uint256(int256(type(int128).max)))));
ops[i].tokenInformations[1] = bytes32(bytes1(uint8(i + 1))) | bytes32(bytes2(uint16(1)));
}
ops[ops.length - 1].tokenInformations[1] = bytes32(bytes1(uint8(ops.length))) | bytes32(bytes2(uint16(1)))
| bytes32(uint256(uint128(uint256(-int256(amountOutMin)))));
int128[] memory deposit = new int128[](tokens.length);
amounts = new uint256[](tokens.length);
amounts[tokens.length - 1] = uint256(int256(execute(tokens, deposit, ops)[tokens.length - 1]));
amounts[0] = msg.value;
}
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] memory path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts) {
return swapTokensForExactTokens(amountOut, amountInMax, path, to, deadline);
}
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] memory path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts) {
return swapTokensForExactTokens(amountIn, amountOutMin, path, to, deadline);
}
function swapETHForExactTokens(uint256 amountOut, address[] memory path, address to, uint256 deadline)
external
payable
returns (uint256[] memory amounts)
{
require(to == msg.sender, "'to' must be msg.sender");
require(deadline > block.timestamp, "deadline");
require(path.length >= 2 && path.length < 256, "invalid path length");
require(
msg.value < uint256(int256(type(int128).max)) && amountOut < uint256(int256(type(int128).max)) - 1,
"invalid path length"
);
Token[] memory tokens;
assembly {
tokens := path
}
VelocoreOperation[] memory ops = new VelocoreOperation[](path.length - 1);
for (uint256 i = 0; i < path.length; i++) {
if (path[i] == address(0)) {
tokens.u(i, NATIVE_TOKEN);
}
}
for (uint256 i = 0; i < ops.length; i++) {
ops[i].poolId = bytes32(
uint256(uint160(address(factory.pools(tokens.u(ops.length - i - 1), tokens.u(ops.length - i)))))
);
ops[i].tokenInformations = new bytes32[](2);
ops[i].data = "";
ops[i].tokenInformations[0] = bytes32(bytes1(uint8(ops.length - i - 1))) | bytes32(bytes2(uint16(1)))
| bytes32(uint256(uint128(uint256(int256(type(int128).max)))));
ops[i].tokenInformations[1] = bytes32(bytes1(uint8(ops.length - i))) | bytes32(bytes2(uint16(2)));
}
ops[ops.length - 1].tokenInformations[0] = bytes32(bytes1(uint8(0))) | bytes32(bytes2(uint16(1)))
| bytes32(uint256(uint128(uint256(int256(msg.value)))));
ops[0].tokenInformations[1] = bytes32(bytes1(uint8(ops.length))) | bytes32(bytes2(uint16(0)))
| bytes32(uint256(uint128(uint256(-int256(amountOut)))));
int128[] memory deposit = new int128[](tokens.length);
amounts = new uint256[](tokens.length);
amounts[0] = uint256(int256(execute(tokens, deposit, ops)[0]));
amounts[tokens.length - 1] = amountOut;
}
function getAmountsOut(uint256 amountIn, address[] memory path) external returns (uint256[] memory amounts) {
Token[] memory tokens;
assembly {
tokens := path
}
VelocoreOperation[] memory ops = new VelocoreOperation[](path.length - 1);
for (uint256 i = 0; i < path.length; i++) {
if (path[i] == address(0)) {
tokens.u(i, NATIVE_TOKEN);
}
}
for (uint256 i = 0; i < ops.length; i++) {
ops[i].poolId = bytes32(uint256(uint160(address(factory.pools(tokens.u(i), tokens.u(i + 1))))));
ops[i].tokenInformations = new bytes32[](2);
ops[i].data = "";
ops[i].tokenInformations[0] = bytes32(bytes1(uint8(i))) | bytes32(bytes2(uint16(2)))
| bytes32(uint256(uint128(uint256(int256(type(int128).max)))));
ops[i].tokenInformations[1] = bytes32(bytes1(uint8(i + 1))) | bytes32(bytes2(uint16(1)));
}
int128[] memory deposit = new int128[](tokens.length);
deposit[0] = int128(int256(amountIn));
amounts = new uint256[](tokens.length);
amounts[tokens.length - 1] = uint256(int256(query(tokens, deposit, ops)[tokens.length - 1]));
amounts[0] = amountIn;
}
function getAmountsIn(uint256 amountOut, address[] memory path) external returns (uint256[] memory amounts) {
Token[] memory tokens;
assembly {
tokens := path
}
VelocoreOperation[] memory ops = new VelocoreOperation[](path.length - 1);
for (uint256 i = 0; i < path.length; i++) {
if (path[i] == address(0)) {
tokens.u(i, NATIVE_TOKEN);
}
}
for (uint256 i = 0; i < ops.length; i++) {
ops[i].poolId = bytes32(
uint256(uint160(address(factory.pools(tokens.u(ops.length - i - 1), tokens.u(ops.length - i)))))
);
ops[i].tokenInformations = new bytes32[](2);
ops[i].data = "";
ops[i].tokenInformations[0] = bytes32(bytes1(uint8(ops.length - i - 1))) | bytes32(bytes2(uint16(1)))
| bytes32(uint256(uint128(uint256(int256(type(int128).max)))));
ops[i].tokenInformations[1] = bytes32(bytes1(uint8(ops.length - i))) | bytes32(bytes2(uint16(2)));
}
ops[0].tokenInformations[1] = bytes32(bytes1(uint8(ops.length))) | bytes32(bytes2(uint16(0)))
| bytes32(uint256(uint128(uint256(-int256(amountOut)))));
int128[] memory deposit = new int128[](tokens.length);
amounts = new uint256[](tokens.length);
amounts[0] = uint256(int256(query(tokens, deposit, ops)[0]));
amounts[tokens.length - 1] = amountOut;
}
function getPair(address t0, address t1) external view returns (address) {
return address(
factory.pools(
t0 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t0)),
t1 == address(0) ? NATIVE_TOKEN : toToken(IERC20(t1))
)
);
}
function allPairs(uint256 i) external view returns (address) {
return address(factory.poolList(i));
}
function allPairsLength() external view returns (uint256) {
return factory.poolsLength();
}
}