2023-01-29 18:29:54 +00:00
// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity ^ 0 . 8 . 17 ;
2022-02-11 04:17:00 +00:00
/**
@ title ERC - 1155 Multi Token Standard
@ dev See https : //github.com/ethereum/EIPs/blob/master/EIPS/eip-1155.md
Note : The ERC - 165 identifier for this interface is 0xd9b67a26 .
* /
interface IERC1155 /* is ERC165 */ {
/**
@ dev Either ` TransferSingle ` or ` TransferBatch ` MUST emit when tokens are transferred , including zero value transfers as well as minting or burning ( see " Safe Transfer Rules " section of the standard ) .
The ` _operator ` argument MUST be msg . sender .
The ` _from ` argument MUST be the address of the holder whose balance is decreased .
The ` _to ` argument MUST be the address of the recipient whose balance is increased .
The ` _id ` argument MUST be the token type being transferred .
The ` _value ` argument MUST be the number of tokens the holder balance is decreased by and match what the recipient balance is increased by .
When minting / creating tokens , the ` _from ` argument MUST be set to ` 0x0 ` ( i . e . zero address ) .
When burning / destroying tokens , the ` _to ` argument MUST be set to ` 0x0 ` ( i . e . zero address ) .
* /
event TransferSingle ( address indexed _operator , address indexed _from , address indexed _to , uint256 _id , uint256 _value ) ;
/**
@ dev Either ` TransferSingle ` or ` TransferBatch ` MUST emit when tokens are transferred , including zero value transfers as well as minting or burning ( see " Safe Transfer Rules " section of the standard ) .
The ` _operator ` argument MUST be msg . sender .
The ` _from ` argument MUST be the address of the holder whose balance is decreased .
The ` _to ` argument MUST be the address of the recipient whose balance is increased .
The ` _ids ` argument MUST be the list of tokens being transferred .
The ` _values ` argument MUST be the list of number of tokens ( matching the list and order of tokens specified in _ids ) the holder balance is decreased by and match what the recipient balance is increased by .
When minting / creating tokens , the ` _from ` argument MUST be set to ` 0x0 ` ( i . e . zero address ) .
When burning / destroying tokens , the ` _to ` argument MUST be set to ` 0x0 ` ( i . e . zero address ) .
* /
event TransferBatch ( address indexed _operator , address indexed _from , address indexed _to , uint256 [ ] _ids , uint256 [ ] _values ) ;
/**
@ dev MUST emit when approval for a second party / operator address to manage all tokens for an owner address is enabled or disabled ( absense of an event assumes disabled ) .
* /
event ApprovalForAll ( address indexed _owner , address indexed _operator , bool _approved ) ;
/**
@ dev MUST emit when the URI is updated for a token ID .
URIs are defined in RFC 3986 .
The URI MUST point a JSON file that conforms to the " ERC-1155 Metadata URI JSON Schema " .
* /
event URI ( string _value , uint256 indexed _id ) ;
/**
@ notice Transfers ` _value ` amount of an ` _id ` from the ` _from ` address to the ` _to ` address specified ( with safety call ) .
@ dev Caller must be approved to manage the tokens being transferred out of the ` _from ` account ( see " Approval " section of the standard ) .
MUST revert if ` _to ` is the zero address .
MUST revert if balance of holder for token ` _id ` is lower than the ` _value ` sent .
MUST revert on any other error .
MUST emit the ` TransferSingle ` event to reflect the balance change ( see " Safe Transfer Rules " section of the standard ) .
After the above conditions are met , this function MUST check if ` _to ` is a smart contract ( e . g . code size > 0 ) . If so , it MUST call ` onERC1155Received ` on ` _to ` and act appropriately ( see " Safe Transfer Rules " section of the standard ) .
@ param _from Source address
@ param _to Target address
@ param _id ID of the token type
@ param _value Transfer amount
@ param _data Additional data with no specified format , MUST be sent unaltered in call to ` onERC1155Received ` on ` _to `
* /
function safeTransferFrom ( address _from , address _to , uint256 _id , uint256 _value , bytes calldata _data ) external ;
/**
@ notice Transfers ` _values ` amount ( s ) of ` _ids ` from the ` _from ` address to the ` _to ` address specified ( with safety call ) .
@ dev Caller must be approved to manage the tokens being transferred out of the ` _from ` account ( see " Approval " section of the standard ) .
MUST revert if ` _to ` is the zero address .
MUST revert if length of ` _ids ` is not the same as length of ` _values ` .
MUST revert if any of the balance ( s ) of the holder ( s ) for token ( s ) in ` _ids ` is lower than the respective amount ( s ) in ` _values ` sent to the recipient .
MUST revert on any other error .
MUST emit ` TransferSingle ` or ` TransferBatch ` event ( s ) such that all the balance changes are reflected ( see " Safe Transfer Rules " section of the standard ) .
Balance changes and events MUST follow the ordering of the arrays ( _ids [ 0 ] / _values [ 0 ] before _ids [ 1 ] / _values [ 1 ] , etc ) .
After the above conditions for the transfer ( s ) in the batch are met , this function MUST check if ` _to ` is a smart contract ( e . g . code size > 0 ) . If so , it MUST call the relevant ` ERC1155TokenReceiver ` hook ( s ) on ` _to ` and act appropriately ( see " Safe Transfer Rules " section of the standard ) .
@ param _from Source address
@ param _to Target address
@ param _ids IDs of each token type ( order and length must match _values array )
@ param _values Transfer amounts per token type ( order and length must match _ids array )
@ param _data Additional data with no specified format , MUST be sent unaltered in call to the ` ERC1155TokenReceiver ` hook ( s ) on ` _to `
* /
function safeBatchTransferFrom ( address _from , address _to , uint256 [ ] calldata _ids , uint256 [ ] calldata _values , bytes calldata _data ) external ;
/**
@ notice Get the balance of an account ' s Tokens.
@ param _owner The address of the token holder
@ param _id ID of the Token
@ return The _owner ' s balance of the Token type requested
* /
function balanceOf ( address _owner , uint256 _id ) external view returns ( uint256 ) ;
/**
@ notice Get the balance of multiple account / token pairs
@ param _owners The addresses of the token holders
@ param _ids ID of the Tokens
@ return The _owner ' s balance of the Token types requested (i.e. balance for each (owner, id) pair)
* /
function balanceOfBatch ( address [ ] calldata _owners , uint256 [ ] calldata _ids ) external view returns ( uint256 [ ] memory ) ;
/**
@ notice Enable or disable approval for a third party ( " operator " ) to manage all of the caller ' s tokens.
@ dev MUST emit the ApprovalForAll event on success .
@ param _operator Address to add to the set of authorized operators
@ param _approved True if the operator is approved , false to revoke approval
* /
function setApprovalForAll ( address _operator , bool _approved ) external ;
/**
@ notice Queries the approval status of an operator for a given owner .
@ param _owner The owner of the Tokens
@ param _operator Address of authorized operator
@ return True if the operator is approved , false if not
* /
function isApprovedForAll ( address _owner , address _operator ) external view returns ( bool ) ;
}