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Adds custom tranformation logic to modify the price and collateral requirement behavior of the expiring multi party contract. If a price request is made pre-expiry, the price should always be set to 2 and the collateral requirement should be set to 1. Post-expiry, the collateral requirement is left as 1 and the price is left unchanged.


transformPrice(struct FixedPoint.Unsigned oraclePrice, uint256 requestTime) → struct FixedPoint.Unsigned (public)

Returns a transformed price for pre-expiry price requests.


  • oraclePrice: price from the oracle to be transformed.
  • requestTime: timestamp the oraclePrice was requested at.
transformCollateralRequirement(struct FixedPoint.Unsigned, struct FixedPoint.Unsigned) → struct FixedPoint.Unsigned (public)

Returns a transformed collateral requirement that is set to be equivalent to 2 tokens pre-expiry.

_preEntranceCheck() (internal)
_preEntranceSet() (internal)
_postEntranceReset() (internal)
_startReentrantGuardDisabled() (internal)
_endReentrantGuardDisabled() (internal)
transformPriceIdentifier(bytes32 priceIdentifier, uint256) → bytes32 (public)

Transforms a given price identifier using the financial product libraries transformation logic.


  • priceIdentifier: input price identifier defined for the financial contract.



Prevents a contract from calling itself, directly or indirectly. Calling a nonReentrant function from another nonReentrant function is not supported. It is possible to prevent this from happening by making the nonReentrant function external, and making it call a private function that does the actual state modification.


Designed to prevent a view-only method from being re-entered during a call to a nonReentrant() state-changing method.