MasaNFT

Masa Finance

MasaNFT

Non-fungible token is a token that is not fungible.

Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, that inherits from {ERC721Enumerable}, {Ownable}, {AccessControl} and {ERC721Burnable}.

Methods

DEFAULT_ADMIN_ROLE

function DEFAULT_ADMIN_ROLE() external view returns (bytes32)

Returns

Name	Type	Description
_0	bytes32	undefined

MINTER_ROLE

function MINTER_ROLE() external view returns (bytes32)

Returns

Name	Type	Description
_0	bytes32	undefined

approve

function approve(address to, uint256 tokenId) external nonpayable

See {IERC721-approve}.

Parameters

Name	Type	Description
to	address	undefined
tokenId	uint256	undefined

balanceOf

function balanceOf(address owner) external view returns (uint256)

See {IERC721-balanceOf}.

Parameters

Name	Type	Description
owner	address	undefined

Returns

Name	Type	Description
_0	uint256	undefined

burn

function burn(uint256 tokenId) external nonpayable

Burns tokenId. See {ERC721-_burn}. Requirements: - The caller must own tokenId or be an approved operator.

Parameters

Name	Type	Description
tokenId	uint256	undefined

exists

function exists(uint256 tokenId) external view returns (bool)

Returns true if the token exists

Returns true if the token has been minted

Parameters

Name	Type	Description
tokenId	uint256	Token to check

Returns

Name	Type	Description
_0	bool	True if the token exists

getApproved

function getApproved(uint256 tokenId) external view returns (address)

See {IERC721-getApproved}.

Parameters

Name	Type	Description
tokenId	uint256	undefined

Returns

Name	Type	Description
_0	address	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

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. May emit a {RoleGranted} event.

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

isApprovedForAll

function isApprovedForAll(address owner, address operator) external view returns (bool)

See {IERC721-isApprovedForAll}.

Parameters

Name	Type	Description
owner	address	undefined
operator	address	undefined

Returns

Name	Type	Description
_0	bool	undefined

name

function name() external view returns (string)

See {IERC721Metadata-name}.

Returns

Name	Type	Description
_0	string	undefined

owner

function owner() external view returns (address)

Returns the address of the current owner.

Returns

Name	Type	Description
_0	address	undefined

ownerOf

function ownerOf(uint256 tokenId) external view returns (address)

See {IERC721-ownerOf}.

Parameters

Name	Type	Description
tokenId	uint256	undefined

Returns

Name	Type	Description
_0	address	undefined

renounceOwnership

function renounceOwnership() external nonpayable

Leaves the contract without owner. It will not be possible to call onlyOwner functions. Can only be called by the current owner. NOTE: Renouncing ownership will leave the contract without an owner, thereby disabling any functionality that is only available to the owner.

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 revoked role, emits a {RoleRevoked} event. Requirements: - the caller must be account. May emit a {RoleRevoked} event.

Parameters

Name	Type	Description
role	bytes32	undefined
account	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. May emit a {RoleRevoked} event.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

safeTransferFrom

function safeTransferFrom(address from, address to, uint256 tokenId) external nonpayable

See {IERC721-safeTransferFrom}.

Parameters

Name	Type	Description
from	address	undefined
to	address	undefined
tokenId	uint256	undefined

safeTransferFrom

function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) external nonpayable

See {IERC721-safeTransferFrom}.

Parameters

Name	Type	Description
from	address	undefined
to	address	undefined
tokenId	uint256	undefined
data	bytes	undefined

setApprovalForAll

function setApprovalForAll(address operator, bool approved) external nonpayable

See {IERC721-setApprovalForAll}.

Parameters

Name	Type	Description
operator	address	undefined
approved	bool	undefined

supportsInterface

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

Query if a contract implements an interface

Interface identification is specified in ERC-165.

Parameters

Name	Type	Description
interfaceId	bytes4	The interface identifier, as specified in ERC-165

Returns

Name	Type	Description
_0	bool	true if the contract implements interfaceId and interfaceId is not 0xffffffff, false otherwise

symbol

function symbol() external view returns (string)

See {IERC721Metadata-symbol}.

Returns

Name	Type	Description
_0	string	undefined

tokenByIndex

function tokenByIndex(uint256 index) external view returns (uint256)

See {IERC721Enumerable-tokenByIndex}.

Parameters

Name	Type	Description
index	uint256	undefined

Returns

Name	Type	Description
_0	uint256	undefined

tokenOfOwnerByIndex

function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256)

See {IERC721Enumerable-tokenOfOwnerByIndex}.

Parameters

Name	Type	Description
owner	address	undefined
index	uint256	undefined

Returns

Name	Type	Description
_0	uint256	undefined

tokenURI

function tokenURI(uint256 tokenId) external view returns (string)

A distinct Uniform Resource Identifier (URI) for a given asset.

Throws if _tokenId is not a valid NFT. URIs are defined in RFC 3986. The URI may point to a JSON file that conforms to the "ERC721 Metadata JSON Schema".

Parameters

Name	Type	Description
tokenId	uint256	NFT to get the URI of

Returns

Name	Type	Description
_0	string	URI of the NFT

totalSupply

function totalSupply() external view returns (uint256)

See {IERC721Enumerable-totalSupply}.

Returns

Name	Type	Description
_0	uint256	undefined

transferFrom

function transferFrom(address from, address to, uint256 tokenId) external nonpayable

See {IERC721-transferFrom}.

Parameters

Name	Type	Description
from	address	undefined
to	address	undefined
tokenId	uint256	undefined

transferOwnership

function transferOwnership(address newOwner) external nonpayable

Transfers ownership of the contract to a new account (newOwner). Can only be called by the current owner.

Parameters

Name	Type	Description
newOwner	address	undefined

Events

Approval

event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)

Emitted when owner enables approved to manage the tokenId token.

Parameters

Name	Type	Description
owner indexed	address	undefined
approved indexed	address	undefined
tokenId indexed	uint256	undefined

ApprovalForAll

event ApprovalForAll(address indexed owner, address indexed operator, bool approved)

Emitted when owner enables or disables (approved) operator to manage all of its assets.

Parameters

Name	Type	Description
owner indexed	address	undefined
operator indexed	address	undefined
approved	bool	undefined

OwnershipTransferred

event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)

Parameters

Name	Type	Description
previousOwner indexed	address	undefined
newOwner indexed	address	undefined

RoleAdminChanged

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

Emitted when newAdminRole is set as role's admin role, replacing previousAdminRole DEFAULT_ADMIN_ROLE is the starting admin for all roles, despite {RoleAdminChanged} not being emitted signaling this. Available since v3.1.

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)

Emitted when account is granted role. sender is the account that originated the contract call, an admin role bearer except when using {AccessControl-_setupRole}.

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)

Emitted when account is revoked role. sender is the account that originated the contract call: - if using revokeRole, it is the admin role bearer - if using renounceRole, it is the role bearer (i.e. account)

Parameters

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

Transfer

event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)

Emitted when tokenId token is transferred from from to to.

Parameters

Name	Type	Description
from indexed	address	undefined
to indexed	address	undefined
tokenId indexed	uint256	undefined