10562 lines
460 KiB
JSON
10562 lines
460 KiB
JSON
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{
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"contractName": "PriceOracle",
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"abi": [
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{
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"inputs": [
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{
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"internalType": "contract IERC20Token",
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"name": "_tokenA",
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"type": "address"
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},
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{
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"internalType": "contract IERC20Token",
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"name": "_tokenB",
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"type": "address"
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},
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{
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"internalType": "contract IChainlinkPriceOracle",
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"name": "_tokenAOracle",
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"type": "address"
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},
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{
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"internalType": "contract IChainlinkPriceOracle",
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"name": "_tokenBOracle",
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"type": "address"
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}
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],
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"stateMutability": "nonpayable",
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"type": "constructor"
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},
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{
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"inputs": [],
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"name": "tokenA",
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"outputs": [
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{
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"internalType": "contract IERC20Token",
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"name": "",
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"type": "address"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [],
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"name": "tokenAOracle",
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"outputs": [
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{
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"internalType": "contract IChainlinkPriceOracle",
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"name": "",
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"type": "address"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [],
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"name": "tokenB",
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"outputs": [
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{
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"internalType": "contract IERC20Token",
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"name": "",
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"type": "address"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [],
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"name": "tokenBOracle",
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"outputs": [
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{
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"internalType": "contract IChainlinkPriceOracle",
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"name": "",
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"type": "address"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [
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{
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"internalType": "contract IERC20Token",
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"name": "",
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"type": "address"
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}
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],
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"name": "tokenDecimals",
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"outputs": [
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{
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"internalType": "uint8",
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"name": "",
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"type": "uint8"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [
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{
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"internalType": "contract IERC20Token",
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"name": "",
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"type": "address"
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}
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],
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"name": "tokensToOracles",
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"outputs": [
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{
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"internalType": "contract IChainlinkPriceOracle",
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"name": "",
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"type": "address"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [
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{
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"internalType": "contract IERC20Token",
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"name": "_tokenA",
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"type": "address"
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},
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{
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"internalType": "contract IERC20Token",
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"name": "_tokenB",
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"type": "address"
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}
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],
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"name": "latestRate",
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"outputs": [
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{
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"internalType": "uint256",
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"name": "",
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"type": "uint256"
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},
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{
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"internalType": "uint256",
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"name": "",
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"type": "uint256"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [],
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"name": "lastUpdateTime",
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"outputs": [
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{
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"internalType": "uint256",
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"name": "",
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"type": "uint256"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [
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{
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"internalType": "contract IERC20Token",
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"name": "_tokenA",
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"type": "address"
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},
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{
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"internalType": "contract IERC20Token",
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"name": "_tokenB",
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"type": "address"
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}
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],
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"name": "latestRateAndUpdateTime",
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"outputs": [
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{
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"internalType": "uint256",
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"name": "",
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"type": "uint256"
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},
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{
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"internalType": "uint256",
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"name": "",
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"type": "uint256"
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},
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{
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"internalType": "uint256",
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"name": "",
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"type": "uint256"
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}
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],
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"stateMutability": "view",
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"type": "function"
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}
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],
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"metadata": "{\"compiler\":{\"version\":\"0.6.12+commit.27d51765\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"contract IERC20Token\",\"name\":\"_tokenA\",\"type\":\"address\"},{\"internalType\":\"contract IERC20Token\",\"name\":\"_tokenB\",\"type\":\"address\"},{\"internalType\":\"contract IChainlinkPriceOracle\",\"name\":\"_tokenAOracle\",\"type\":\"address\"},{\"internalType\":\"contract IChainlinkPriceOracle\",\"name\":\"_tokenBOracle\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[],\"name\":\"lastUpdateTime\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"contract IERC20Token\",\"name\":\"_tokenA\",\"type\":\"address\"},{\"internalType\":\"contract IERC20Token\",\"name\":\"_tokenB\",\"type\":\"address\"}],\"name\":\"latestRate\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"contract IERC20Token\",\"name\":\"_tokenA\",\"type\":\"address\"},{\"internalType\":\"contract IERC20Token\",\"name\":\"_tokenB\",\"type\":\"address\"}],\"name\":\"latestRateAndUpdateTime\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenA\",\"outputs\":[{\"internalType\":\"contract IERC20Token\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenAOracle\",\"outputs\":[{\"internalType\":\"contract IChainlinkPriceOracle\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenB\",\"outputs\":[{\"internalType\":\"contract IERC20Token\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenBOracle\",\"outputs\":[{\"internalType\":\"contract IChainlinkPriceOracle\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"contract IERC20Token\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"tokenDecimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"contract IERC20Token\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"tokensToOracles\",\"outputs\":[{\"internalType\":\"contract IChainlinkPriceOracle\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Provides the off-chain rate between two tokens The price oracle uses chainlink oracles internally to get the rates of the two tokens with respect to a common denominator, and then returns the rate between them, which is equivalent to the rate of TokenA / TokenB\",\"kind\":\"dev\",\"methods\":{\"constructor\":{\"details\":\"initializes a new PriceOracle instance note that the oracles must have the same common denominator (USD, ETH etc.)\",\"params\":{\"_tokenA\":\"first token to support\",\"_tokenAOracle\":\"first token price oracle\",\"_tokenB\":\"second token to support\",\"_tokenBOracle\":\"second token price oracle\"}},\"lastUpdateTime()\":{\"details\":\"returns the timestamp of the last price update\",\"returns\":{\"_0\":\"timestamp\"}},\"latestRate(address,address)\":{\"details\":\"returns the latest known rate between the two given tokens for a given pair of tokens A and B, returns the rate of A / B (the number of B units equivalent to a single A unit) the rate is returned as a fraction (numerator / denominator) for accuracy\",\"params\":{\"_tokenA\":\"token to get the rate of 1 unit of\",\"_tokenB\":\"token to get the rate of 1
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"bytecode": "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"source": "// SPDX-License-Identifier: SEE LICENSE IN LICENSE\r\npragma solidity 0.6.12;\r\nimport \"./Utils.sol\";\r\nimport \"./SafeMath.sol\";\r\nimport \"./interfaces/IPriceOracle.sol\";\r\nimport \"./interfaces/IChainlinkPriceOracle.sol\";\r\n\r\n/**\r\n * @dev Provides the off-chain rate between two tokens\r\n *\r\n * The price oracle uses chainlink oracles internally to get the rates of the two tokens\r\n * with respect to a common denominator, and then returns the rate between them, which\r\n * is equivalent to the rate of TokenA / TokenB\r\n*/\r\ncontract PriceOracle is IPriceOracle, Utils {\r\n using SafeMath for uint256;\r\n\r\n IERC20Token private constant ETH_ADDRESS = IERC20Token(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);\r\n uint8 private constant ETH_DECIMALS = 18;\r\n\r\n IERC20Token public tokenA; // token A the oracle supports\r\n IERC20Token public tokenB; // token B the oracle supports\r\n mapping (IERC20Token => uint8) public tokenDecimals; // token -> token decimals\r\n\r\n IChainlinkPriceOracle public override tokenAOracle; // token A chainlink price oracle\r\n IChainlinkPriceOracle public override tokenBOracle; // token B chainlink price oracle\r\n mapping (IERC20Token => IChainlinkPriceOracle) public tokensToOracles; // token -> price oracle for easier access\r\n\r\n /**\r\n * @dev initializes a new PriceOracle instance\r\n * note that the oracles must have the same common denominator (USD, ETH etc.)\r\n *\r\n * @param _tokenA first token to support\r\n * @param _tokenB second token to support\r\n * @param _tokenAOracle first token price oracle\r\n * @param _tokenBOracle second token price oracle\r\n */\r\n constructor(IERC20Token _tokenA, IERC20Token _tokenB, IChainlinkPriceOracle _tokenAOracle, IChainlinkPriceOracle _tokenBOracle)\r\n public\r\n validUniqueAddresses(address(_tokenA), address(_tokenB))\r\n validUniqueAddresses(address(_tokenAOracle), address(_tokenBOracle))\r\n {\r\n tokenA = _tokenA;\r\n tokenB = _tokenB;\r\n tokenDecimals[_tokenA] = decimals(_tokenA);\r\n tokenDecimals[_tokenB] = decimals(_tokenB);\r\n\r\n tokenAOracle = _tokenAOracle;\r\n tokenBOracle = _tokenBOracle;\r\n tokensToOracles[_tokenA] = _tokenAOracle;\r\n tokensToOracles[_tokenB] = _tokenBOracle;\r\n }\r\n\r\n // ensures that the provided addresses are unique valid\r\n modifier validUniqueAddresses(address _address1, address _address2) {\r\n _validUniqueAddresses(_address1, _address2);\r\n _;\r\n }\r\n\r\n // error message binary size optimization\r\n function _validUniqueAddresses(address _address1, address _address2) internal pure {\r\n _validAddress(_address1);\r\n _validAddress(_address2);\r\n require(_address1 != _address2, \"ERR_SAME_ADDRESS\");\r\n }\r\n\r\n // ensures that the provides tokens are supported by the oracle\r\n modifier supportedTokens(IERC20Token _tokenA, IERC20Token _tokenB) {\r\n _supportedTokens(_tokenA, _tokenB);\r\n _;\r\n }\r\n\r\n // error message binary size optimization\r\n function _supportedTokens(IERC20Token _tokenA, IERC20Token _tokenB) internal view {\r\n _validUniqueAddresses(address(_tokenA), address(_tokenB));\r\n require(address(tokensToOracles[_tokenA]) != address(0) && address(tokensToOracles[_tokenB]) != address(0), \"ERR_UNSUPPORTED_TOKEN\");\r\n }\r\n\r\n /**\r\n * @dev returns the latest known rate between the two given tokens\r\n * for a given pair of tokens A and B, returns the rate of A / B\r\n * (the number of B units equivalent to a single A unit)\r\n * the rate is returned as a fraction (numerator / denominator) for accuracy\r\n *\r\n * @param _tokenA token to get the rate of 1 unit of\r\n * @param _tokenB token to get the rate of 1 `_tokenA` against\r\n *\r\n * @return numerator\r\n * @return denominator\r\n */\r\n
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|
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|
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|
||
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|
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|
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|
|
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||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||
|
|
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|
||
|
|
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|
||
|
|
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|
||
|
|
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|
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|
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|
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|
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|
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},
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|
|
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|
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|
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|
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|
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|
|
},
|
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|
|
"networks": {},
|
||
|
|
"schemaVersion": "3.2.3",
|
||
|
|
"updatedAt": "2020-10-20T08:24:47.841Z",
|
||
|
|
"devdoc": {
|
||
|
|
"details": "Provides the off-chain rate between two tokens The price oracle uses chainlink oracles internally to get the rates of the two tokens with respect to a common denominator, and then returns the rate between them, which is equivalent to the rate of TokenA / TokenB",
|
||
|
|
"kind": "dev",
|
||
|
|
"methods": {
|
||
|
|
"constructor": {
|
||
|
|
"details": "initializes a new PriceOracle instance note that the oracles must have the same common denominator (USD, ETH etc.)",
|
||
|
|
"params": {
|
||
|
|
"_tokenA": "first token to support",
|
||
|
|
"_tokenAOracle": "first token price oracle",
|
||
|
|
"_tokenB": "second token to support",
|
||
|
|
"_tokenBOracle": "second token price oracle"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
"lastUpdateTime()": {
|
||
|
|
"details": "returns the timestamp of the last price update",
|
||
|
|
"returns": {
|
||
|
|
"_0": "timestamp"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
"latestRate(address,address)": {
|
||
|
|
"details": "returns the latest known rate between the two given tokens for a given pair of tokens A and B, returns the rate of A / B (the number of B units equivalent to a single A unit) the rate is returned as a fraction (numerator / denominator) for accuracy",
|
||
|
|
"params": {
|
||
|
|
"_tokenA": "token to get the rate of 1 unit of",
|
||
|
|
"_tokenB": "token to get the rate of 1 `_tokenA` against"
|
||
|
|
},
|
||
|
|
"returns": {
|
||
|
|
"_0": "numerator",
|
||
|
|
"_1": "denominator"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
"latestRateAndUpdateTime(address,address)": {
|
||
|
|
"details": "returns both the rate and the timestamp of the last update in a single call (gas optimization)",
|
||
|
|
"params": {
|
||
|
|
"_tokenA": "token to get the rate of 1 unit of",
|
||
|
|
"_tokenB": "token to get the rate of 1 `_tokenA` against"
|
||
|
|
},
|
||
|
|
"returns": {
|
||
|
|
"_0": "numerator",
|
||
|
|
"_1": "denominator",
|
||
|
|
"_2": "timestamp of the last update"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
"version": 1
|
||
|
|
},
|
||
|
|
"userdoc": {
|
||
|
|
"kind": "user",
|
||
|
|
"methods": {},
|
||
|
|
"version": 1
|
||
|
|
}
|
||
|
|
}
|