IPriceFeed
Interface Description
License: MIT
This is the price feed contract which is used to fetch the spot prices from the UniswapV2 protocol. There also is a pathfinder built into the contract to find the optimal* path between the pairs
Enums info
PoolInterfaceType
The enum that holds information about the router type
Parameters:
Name | Description |
---|---|
UniswapV2Interface | the Uniswap V2 router V2 type |
UniswapV3Interface | the Uniswap V3 quouter V2 type |
Structs info
PoolType
A struct describing single swapping pool parameters
Parameters:
Name | Type | Description |
---|---|---|
poolType | enum IPriceFeed.PoolInterfaceType | the interface type of the router |
router | address | the address of the router or quoter |
fee | uint24 | the pool fee (in case of V3 pools) |
SwapPath
A struct describing a swap path
Parameters:
Name | Type | Description |
---|---|---|
path | address[] | the tokens swapped alongside the path |
poolTypes | uint8[] | the v2/v3 pool types alongside the path |
Functions info
addPathTokens (0xf973dc01)
This function sets path tokens that will be used in the pathfinder
Parameters:
Name | Type | Description |
---|---|---|
pathTokens | address[] | the array of tokens to be added into the path finder |
removePathTokens (0x5de49e39)
This function removes path tokens from the pathfinder
Parameters:
Name | Type | Description |
---|---|---|
pathTokens | address[] | the array of tokens to be removed from the pathfinder |
setPoolTypes (0x3cbc6757)
This function sets pool types that will be used in the pathfinder
Parameters:
Name | Type | Description |
---|---|---|
poolTypes | struct IPriceFeed.PoolType[] | the array of pool types |
getPriceOut (0x70e48e96)
Shares the same functionality as "getExtendedPriceOut" function with an empty optionalPath. It accepts and returns amounts with 18 decimals regardless of the inToken and outToken decimals
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to exchange from |
outToken | address | the token to exchange to |
amountIn | uint256 | the amount of inToken to be exchanged (with 18 decimals) |
Return values:
Name | Type | Description |
---|---|---|
amountOut | uint256 | the received amount of outToken after the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens and pools path that will be used during the swap |
getPriceIn (0xd48c3202)
Shares the same functionality as "getExtendedPriceIn" function with with an empty optionalPath. It accepts and returns amounts with 18 decimals regardless of the inToken and outToken decimals
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to exchange from |
outToken | address | the token to exchange to |
amountOut | uint256 | the amount of outToken to be received (with 18 decimals) |
Return values:
Name | Type | Description |
---|---|---|
amountIn | uint256 | required amount of inToken to execute the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getNormalizedPriceOutUSD (0xb4c05b8c)
The same as "getPriceOut" with "outToken" being native USD token
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to be exchanged from |
amountIn | uint256 | the amount of inToken to exchange (with 18 decimals) |
Return values:
Name | Type | Description |
---|---|---|
amountOut | uint256 | the received amount of native USD tokens after the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getNormalizedPriceInUSD (0x715c6baf)
The same as "getPriceIn" with "outToken" being USD token
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to get the price of |
amountOut | uint256 | the amount of USD to be received (with 18 decimals) |
Return values:
Name | Type | Description |
---|---|---|
amountIn | uint256 | the required amount of inToken to execute the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getNormalizedPriceOutDEXE (0x291bcd52)
The same as "getPriceOut" with "outToken" being DEXE token
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to be exchanged from |
amountIn | uint256 | the amount of inToken to exchange (with 18 decimals) |
Return values:
Name | Type | Description |
---|---|---|
amountOut | uint256 | the received amount of DEXE tokens after the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getNormalizedPriceInDEXE (0x9180f690)
The same as "getPriceIn" with "outToken" being DEXE token
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to get the price of |
amountOut | uint256 | the amount of DEXE to be received (with 18 decimals) |
Return values:
Name | Type | Description |
---|---|---|
amountIn | uint256 | the required amount of inToken to execute the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
totalPathTokens (0x9f2f8ce1)
The function that returns the total number of path tokens (tokens used in the pathfinder)
Return values:
Name | Type | Description |
---|---|---|
[0] | uint256 | the number of path tokens |
getPathTokens (0x547c176b)
The function to get the list of path tokens
Return values:
Name | Type | Description |
---|---|---|
[0] | address[] | the list of path tokens |
getPoolTypesLength (0x14980a8d)
The function that returns the total number of pool types used in the pathfinder
Return values:
Name | Type | Description |
---|---|---|
[0] | uint256 | the number of pool types |
getPoolTypes (0x2fbc3b93)
The function to return the list of pool types used in the pathfinder
Return values:
Name | Type | Description |
---|---|---|
[0] | struct IPriceFeed.PoolType[] | the list of pool types |
isSupportedPathToken (0xa5b0de41)
This function checks if the provided token is used by the pathfinder
Parameters:
Name | Type | Description |
---|---|---|
token | address | the token to be checked |
Return values:
Name | Type | Description |
---|---|---|
[0] | bool | true if the token is used by the pathfinder, false otherwise |
getExtendedPriceOut (0x054889da)
This function tries to find the optimal exchange rate (the price) between "inToken" and "outToken" using custom pathfinder and optional specified path. The optimality is reached when the amount of outTokens is maximal
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to exchange from |
outToken | address | the received token |
amountIn | uint256 | the amount of inToken to be exchanged (in inToken decimals) |
optionalPath | struct IPriceFeed.SwapPath | the optional path between inToken and outToken that will be used in the pathfinder |
Return values:
Name | Type | Description |
---|---|---|
amountOut | uint256 | amount of outToken after the swap (in outToken decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getExtendedPriceIn (0x76707b6b)
This function tries to find the optimal exchange rate (the price) between "inToken" and "outToken" using custom pathfinder and optional specified path. The optimality is reached when the amount of inTokens is minimal
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to exchange from |
outToken | address | the received token |
amountOut | uint256 | the amount of outToken to be received (in inToken decimals) |
optionalPath | struct IPriceFeed.SwapPath | the optional path between inToken and outToken that will be used in the pathfinder |
Return values:
Name | Type | Description |
---|---|---|
amountIn | uint256 | amount of inToken to execute a swap (in outToken decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getNormalizedExtendedPriceOut (0x62d78340)
Shares the same functionality as "getExtendedPriceOut" function. It accepts and returns amounts with 18 decimals regardless of the inToken and outToken decimals
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to exchange from |
outToken | address | the token to exchange to |
amountIn | uint256 | the amount of inToken to be exchanged (with 18 decimals) |
optionalPath | struct IPriceFeed.SwapPath | the optional path between inToken and outToken that will be used in the pathfinder |
Return values:
Name | Type | Description |
---|---|---|
amountOut | uint256 | the received amount of outToken after the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getNormalizedExtendedPriceIn (0x9ebb6389)
Shares the same functionality as "getExtendedPriceIn" function. It accepts and returns amounts with 18 decimals regardless of the inToken and outToken decimals
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to exchange from |
outToken | address | the token to exchange to |
amountOut | uint256 | the amount of outToken to be received (with 18 decimals) |
optionalPath | struct IPriceFeed.SwapPath | the optional path between inToken and outToken that will be used in the pathfinder |
Return values:
Name | Type | Description |
---|---|---|
amountIn | uint256 | the required amount of inToken to execute the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getNormalizedPriceOut (0xb6ccb44d)
Shares the same functionality as "getExtendedPriceOut" function with an empty optionalPath. It accepts and returns amounts with 18 decimals regardless of the inToken and outToken decimals
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to exchange from |
outToken | address | the token to exchange to |
amountIn | uint256 | the amount of inToken to be exchanged (with 18 decimals) |
Return values:
Name | Type | Description |
---|---|---|
amountOut | uint256 | the received amount of outToken after the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |
getNormalizedPriceIn (0x2bcbc598)
Shares the same functionality as "getExtendedPriceIn" function with an empty optionalPath. It accepts and returns amounts with 18 decimals regardless of the inToken and outToken decimals
Parameters:
Name | Type | Description |
---|---|---|
inToken | address | the token to exchange from |
outToken | address | the token to exchange to |
amountOut | uint256 | the amount of outToken to be received (with 18 decimals) |
Return values:
Name | Type | Description |
---|---|---|
amountIn | uint256 | required amount of inToken to execute the swap (with 18 decimals) |
path | struct IPriceFeed.SwapPath | the tokens path that will be used during the swap |