OracleRef

defines some utilities around interacting with the referenced oracle

Functions

constructor

function constructor(
    address _core,
    address _oracle,
    address _backupOracle,
    int256 _decimalsNormalizer,
    bool _doInvert
) internal

OracleRef constructor

Parameters

Name	Type	Description
_core	address	Fei Core to reference
_oracle	address	oracle to reference
_backupOracle	address	backup oracle to reference
_decimalsNormalizer	int256	number of decimals to normalize the oracle feed if necessary
_doInvert	bool	invert the oracle price if this flag is on

setOracle

function setOracle(
    address newOracle
) external

sets the referenced oracle

Parameters

Name	Type	Description
newOracle	address	the new oracle to reference

setDoInvert

function setDoInvert(
    bool newDoInvert
) external

sets the flag for whether to invert or not

Parameters

Name	Type	Description
newDoInvert	bool	the new flag for whether to invert

setDecimalsNormalizer

function setDecimalsNormalizer(
    int256 newDecimalsNormalizer
) external

sets the new decimalsNormalizer

Parameters

Name	Type	Description
newDecimalsNormalizer	int256	the new decimalsNormalizer

setBackupOracle

function setBackupOracle(
    address newBackupOracle
) external

sets the referenced backup oracle

Parameters

Name	Type	Description
newBackupOracle	address	the new backup oracle to reference

invert

function invert(
    struct Decimal.D256 price
) public returns (struct Decimal.D256)

invert a peg price

the inverted peg would be X per FEI

Parameters

Name	Type	Description
price	struct Decimal.D256	the peg price to invert

Return Values

Name	Type	Description
[0]	struct Decimal.D256	the inverted peg as a Decimal

updateOracle

function updateOracle() public

updates the referenced oracle

readOracle

function readOracle() public returns (struct Decimal.D256)

the peg price of the referenced oracle

the peg is defined as FEI per X with X being ETH, dollars, etc

Return Values

Name	Type	Description
[0]	struct Decimal.D256	the peg as a Decimal

_setOracle

function _setOracle(
    address newOracle
) internal

Parameters

Name	Type	Description
newOracle	address

_setBackupOracle

function _setBackupOracle(
    address newBackupOracle
) internal

Parameters

Name	Type	Description
newBackupOracle	address

_setDoInvert

function _setDoInvert(
    bool newDoInvert
) internal

Parameters

Name	Type	Description
newDoInvert	bool

_setDecimalsNormalizer

function _setDecimalsNormalizer(
    int256 newDecimalsNormalizer
) internal

Parameters

Name	Type	Description
newDecimalsNormalizer	int256

_setDecimalsNormalizerFromToken

function _setDecimalsNormalizerFromToken(
    address token
) internal

Parameters

Name	Type	Description
token	address