VaultTransferLibrary

Linked token interactions after the vault has persisted its accounting effects.

Functions

version

Return the semantic version of this implementation.

Returns the declared configuration or derived value without updating state.

Notes:

security: Read-only; does not authorize settlement.
validation: Uses the declared input types; target interface calls may revert.
state-changes: None.
events: None.
errors: Propagates invalid input or target read failures.
reentrancy: Read-only.
access: Public.
oracle: No fresh observation is created; reference getters expose existing source data.

function version() external pure returns (string memory);

Returns

Name	Type	Description
`<none>`	`string`	Value defined by this accessor or calculation.

mint

Receive USDC, route fees and spread, mint QEURO and deploy selected backing.

Invoked through the consumer; delegatecall retains its storage and original sender.

Notes:

security: Consumer permissions and accounting checks remain in force.
validation: Applies the selected operation's bounds; failures revert the entire call.
state-changes: Updates the calling consumer and downstream contracts as described above.
events: Underlying operation and token events when applicable.
errors: Reverts on invalid inputs, permissions or failed downstream calls.
reentrancy: The consuming operation retains its existing reentrancy guards.
access: Consumer entrypoint permissions; this helper grants no additional authority.
oracle: Uses the consumer's configured reference and execution paths where the operation requires pricing.

function mint(
    address payer,
    address recipient,
    uint256 input,
    uint256 fee,
    uint256 backing,
    uint256 output,
    uint256 route
) external;

Parameters

Name	Type	Description
`payer`	`address`	Address from which input tokens are collected.
`recipient`	`address`	Address receiving the output transfer.
`input`	`uint256`	Gross input amount in input-token raw units.
`fee`	`uint256`	Protocol fee in six-decimal USDC units.
`backing`	`uint256`	Reference-valued collateral in six-decimal USDC units.
`output`	`uint256`	Validated output amount in output-token raw units.
`route`	`uint256`	External vault ID, or zero for liquid collateral.

redeem

Burn QEURO and pay the user, fees and execution spread.

Invoked through the consumer; delegatecall retains its storage and original sender.

Notes:

security: Consumer permissions and accounting checks remain in force.
validation: Applies the selected operation's bounds; failures revert the entire call.
state-changes: Updates the calling consumer and downstream contracts as described above.
events: Underlying operation and token events when applicable.
errors: Reverts on invalid inputs, permissions or failed downstream calls.
reentrancy: The consuming operation retains its existing reentrancy guards.
access: Consumer entrypoint permissions; this helper grants no additional authority.
oracle: Uses the consumer's configured reference and execution paths where the operation requires pricing.

function redeem(address recipient, uint256 input, uint256 backing, uint256 output, uint256 fee) external;

Parameters

Name	Type	Description
`recipient`	`address`	Address receiving the output transfer.
`input`	`uint256`	Gross input amount in input-token raw units.
`backing`	`uint256`	Reference-valued collateral in six-decimal USDC units.
`output`	`uint256`	Validated output amount in output-token raw units.
`fee`	`uint256`	Protocol fee in six-decimal USDC units.

_fees

function _fees(ITransferVault v, IERC20 token, uint256 fee, string memory source) private;

deploy

Deposit backing into the configured external adapter.

Invoked through the consumer; delegatecall retains its storage and original sender.

Notes:

security: Consumer permissions and accounting checks remain in force.
validation: Applies the selected operation's bounds; failures revert the entire call.
state-changes: Updates the calling consumer and downstream contracts as described above.
events: Underlying operation and token events when applicable.
errors: Reverts on invalid inputs, permissions or failed downstream calls.
reentrancy: The consuming operation retains its existing reentrancy guards.
access: Consumer entrypoint permissions; this helper grants no additional authority.
oracle: Uses the consumer's configured reference and execution paths where the operation requires pricing.

function deploy(uint256 id, uint256 amount) external;

Parameters

Name	Type	Description
`id`	`uint256`	External vault identifier.
`amount`	`uint256`	Amount in the token units of the selected operation.

_deploy

function _deploy(ITransferVault v, IERC20 token, uint256 id, uint256 amount) private;

Events

UsdcDeployedToExternalVault

event UsdcDeployedToExternalVault(uint256 indexed vaultId, uint256 indexed usdcAmount, uint256 principalAfter);