Code

MateriaFactory.sol

Address

MateriaFactory is deployed at 0xb498a69ff7b9a73c58491d564fc6a462b259c860 on the Ethereum mainnet and the Ropsten testnet. It was built from commit tagged as depoloy.

Events

PairCreated

event PairCreated(address indexed token0, address indexed token1, address pair, uint);
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Emitted each time a pair is created via createPair.

• token0 is guaranteed to be strictly less than token1 by sort order.
• The final uint log value will be 1 for the first pair created, 2 for the second, etc. (see allPairs/getPair).

Read-Only Functions

getPair

function getPair(address tokenA, address tokenB) external view returns (address pair);
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Returns the address of the pair for tokenA and tokenB, if it has been created, else address(0) (0x0000000000000000000000000000000000000000).

• tokenA and tokenB are interchangeable.
• Pair addresses can also be calculated deterministically, see Pair Addresses.

allPairs

function allPairs(uint) external view returns (address pair);
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Returns the address of the nth pair (0-indexed) created through the factory, or address(0) (0x0000000000000000000000000000000000000000) if not enough pairs have been created yet.

• Pass 0 for the address of the first pair created, 1 for the second, etc.

allPairsLength

function allPairsLength() external view returns (uint);
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Returns the total number of pairs created through the factory so far.

feeTo

function feeTo() external view returns (address);
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Returns the receiver of the Materia fee, if disabled it returns the zero address. See Protocol Charge Calculation.

defaultMateriaFee

function defaultMateriaFee() external view returns (uint);
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Returns the default Materia fee i.e. the initial Materia Fee for new pairs.

defaultSwapFee

function defaultSwapFee() external view returns (uint);
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Returns the default swap fee i.e. the initial swap Fee for new pairs.

owner

function owner() external view returns (address);
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Returns the owner, currently this is the orchestrator.

State-Changing Functions

createPair

function createPair(address tokenA, address tokenB) external returns (address pair);
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Creates a pair for tokenA and tokenB if one doesn’t exist already.

• tokenA and tokenB are interchangeable.
• Emits PairCreated.

Can be called only by the owner.

##setDefaultMateriaFee

function setDefaultMateriaFee(uint256 _defaultMateriaFee) external;s
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Set the deafult new Materia fee for new pairs, must be called by the owner.

##setDefaultSwapFee

function setDefaultMateriaFee(uint256 _defaultMateriaFee) external;s
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Set the deafult new swap fee for new pairs, must be called by the owner.

##setFees

function setFees(address pair, uint256 materiaFee, uint256 swapFee) external;
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Set the fees for a specific pair, must be called by the owner.

Interface

import '@materia/materia-constracts-core/contracts/interfaces/IMateriaFactory.sol';
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interface IMateriaFactory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint256);

    function feeTo() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);

    function allPairs(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;

    function setDefaultMateriaFee(uint256) external;

    function setDefaultSwapFee(uint256) external;

    function transferOwnership(address newOwner) external;

    function setFees(
        address,
        uint256,
        uint256
    ) external;

    function owner() external view returns (address);
}
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ABI

import IMateriaFactory from '@materia/materia-contracts-core/build/IMateriaFactory.json'
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