Price Provider Aggregator

Methods

DEFAULT_ADMIN_ROLE

function DEFAULT_ADMIN_ROLE() external view returns (bytes32)

Returns

Name	Type	Description
_0	bytes32	undefined

MODERATOR_ROLE

function MODERATOR_ROLE() external view returns (bytes32)

Returns

Name	Type	Description
_0	bytes32	undefined

changeActive

function changeActive(address priceProvider, address token, bool active) external nonpayable

Parameters

Name	Type	Description
priceProvider	address	undefined
token	address	undefined
active	bool	undefined

getEvaluation

function getEvaluation(address token, uint256 tokenAmount) external view returns (uint256 evaluation)

returns the USD evaluation of token by its tokenAmount

Parameters

Name	Type	Description
token	address	the address of token to evaluate
tokenAmount	uint256	the amount of token to evaluate

Returns

Name	Type	Description
evaluation	uint256	undefined

getEvaluationSigned

function getEvaluationSigned(address token, uint256 tokenAmount, uint256 priceMantissa, uint256 validTo, bytes signature) external view returns (uint256 evaluation)

returns the USD evaluation of token by its tokenAmount

Parameters

Name	Type	Description
token	address	the address of token
tokenAmount	uint256	the amount of token including decimals
priceMantissa	uint256	- the price of token (used in verifying the signature)
validTo	uint256	- the timestamp in seconds (used in verifying the signature)
signature	bytes	- the backend signature of secp256k1. length is 65 bytes

Returns

Name	Type	Description
evaluation	uint256	undefined

getPrice

function getPrice(address token) external view returns (uint256 priceMantissa, uint8 priceDecimals)

price = priceMantissa / (10 ** priceDecimals)

returns tuple (priceMantissa, priceDecimals)

Parameters

Name	Type	Description
token	address	the address of token wich price is to return

Returns

Name	Type	Description
priceMantissa	uint256	undefined
priceDecimals	uint8	undefined

getPriceSigned

function getPriceSigned(address token, uint256 priceMantissa, uint256 validTo, bytes signature) external view returns (uint256 priceMantissa_, uint8 priceDecimals)

returns the tupple (priceMantissa, priceDecimals) of token multiplied by 10 ** priceDecimals given by price provider. price can be calculated as priceMantissa / (10 ** priceDecimals) i.e. price = priceMantissa / (10 ** priceDecimals)

Parameters

Name	Type	Description
token	address	the address of token
priceMantissa	uint256	- the price of token (used in verifying the signature)
validTo	uint256	- the timestamp in seconds (used in verifying the signature)
signature	bytes	- the backend signature of secp256k1. length is 65 bytes

Returns

Name	Type	Description
priceMantissa_	uint256	undefined
priceDecimals	uint8	undefined

getRoleAdmin

function getRoleAdmin(bytes32 role) external view returns (bytes32)

Returns the admin role that controls role. See {grantRole} and {revokeRole}. To change a role's admin, use {_setRoleAdmin}.

Parameters

Name	Type	Description
role	bytes32	undefined

Returns

Name	Type	Description
_0	bytes32	undefined

grandModerator

function grandModerator(address newModerator) external nonpayable

Parameters

Name	Type	Description
newModerator	address	undefined

grantRole

function grantRole(bytes32 role, address account) external nonpayable

Grants role to account. If account had not been already granted role, emits a {RoleGranted} event. Requirements: - the caller must have role's admin role.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

hasRole

function hasRole(bytes32 role, address account) external view returns (bool)

Returns true if account has been granted role.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

Returns

Name	Type	Description
_0	bool	undefined

initialize

function initialize() external nonpayable

renounceRole

function renounceRole(bytes32 role, address account) external nonpayable

Revokes role from the calling account. Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced). If the calling account had been granted role, emits a {RoleRevoked} event. Requirements: - the caller must be account.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

revokeModerator

function revokeModerator(address moderator) external nonpayable

Parameters

Name	Type	Description
moderator	address	undefined

revokeRole

function revokeRole(bytes32 role, address account) external nonpayable

Revokes role from account. If account had been granted role, emits a {RoleRevoked} event. Requirements: - the caller must have role's admin role.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

setTokenAndPriceProvider

function setTokenAndPriceProvider(address token, address priceProvider, bool hasFunctionWithSign) external nonpayable

sets price provider to token

Parameters

Name	Type	Description
token	address	the address of token
priceProvider	address	the address of price provider. Should implememnt the interface of PriceProvider
hasFunctionWithSign	bool	true - if price provider has function with signatures false - if price provider does not have function with signatures

supportsInterface

function supportsInterface(bytes4 interfaceId) external view returns (bool)

See {IERC165-supportsInterface}.

Parameters

Name	Type	Description
interfaceId	bytes4	undefined

Returns

Name	Type	Description
_0	bool	undefined

tokenPriceProvider

function tokenPriceProvider(address) external view returns (address priceProvider, bool hasSignedFunction)

Parameters

Name	Type	Description
_0	address	undefined

Returns

Name	Type	Description
priceProvider	address	undefined
hasSignedFunction	bool	undefined

usdDecimals

function usdDecimals() external view returns (uint8)

Returns

Name	Type	Description
_0	uint8	undefined

Events

ChangeActive

event ChangeActive(address indexed who, address indexed priceProvider, address indexed token, bool active)

Parameters

Name	Type	Description
who indexed	address	undefined
priceProvider indexed	address	undefined
token indexed	address	undefined
active	bool	undefined

GrandModeratorRole

event GrandModeratorRole(address indexed who, address indexed newModerator)

Parameters

Name	Type	Description
who indexed	address	undefined
newModerator indexed	address	undefined

RevokeModeratorRole

event RevokeModeratorRole(address indexed who, address indexed moderator)

Parameters

Name	Type	Description
who indexed	address	undefined
moderator indexed	address	undefined

RoleAdminChanged

event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole)

Parameters

Name	Type	Description
role indexed	bytes32	undefined
previousAdminRole indexed	bytes32	undefined
newAdminRole indexed	bytes32	undefined

RoleGranted

event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender)

Parameters

Name	Type	Description
role indexed	bytes32	undefined
account indexed	address	undefined
sender indexed	address	undefined

RoleRevoked

event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender)

Parameters

Name	Type	Description
role indexed	bytes32	undefined
account indexed	address	undefined
sender indexed	address	undefined

SetTokenAndPriceProvider

event SetTokenAndPriceProvider(address indexed who, address indexed token, address indexed priceProvider)

Parameters

Name	Type	Description
who indexed	address	undefined
token indexed	address	undefined
priceProvider indexed	address	undefined