ShareDebtToken
ShareDebtToken
ERC20 compatible token represennting debt position in Silo
It implements reversed approvals (ERC20R) and checks solvency of receiver on transfer. It is assumed that there is no vector attack on taking somone else's debt becasue we don't see economical reason why one would do such thing. For that reason anyone can transfer owner's token to any receiver as long as receiving wallet approves the transfer. In other words, anyone can take someone else's debt without asking.

Methods

allowance

function allowance(address owner, address spender) external view returns (uint256)
See {IERC20-allowance}.

Parameters

Name
Type
Description
owner
address
undefined
spender
address
undefined

Returns

Name
Type
Description
_0
uint256
undefined

approve

function approve(address spender, uint256 amount) external nonpayable returns (bool)
See {IERC20-approve}. Requirements: - spender cannot be the zero address.

Parameters

Name
Type
Description
spender
address
undefined
amount
uint256
undefined

Returns

Name
Type
Description
_0
bool
undefined

asset

function asset() external view returns (address)
asset for which this tokens was deployed

Returns

Name
Type
Description
_0
address
undefined

balanceOf

function balanceOf(address account) external view returns (uint256)
See {IERC20-balanceOf}.

Parameters

Name
Type
Description
account
address
undefined

Returns

Name
Type
Description
_0
uint256
undefined

burn

function burn(address _account, uint256 _amount) external nonpayable
Burn method for Silo to close debt positon

Parameters

Name
Type
Description
_account
address
wallet for which to burn token
_amount
uint256
amount of token to be burned

decimals

function decimals() external view returns (uint8)
Returns the number of decimals used to get its user representation. For example, if decimals equals 2, a balance of 505 tokens should be displayed to a user as 5.05 (505 / 10 ** 2). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the value {ERC20} uses, unless this function is overridden; NOTE: This information is only used for display purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}.

Returns

Name
Type
Description
_0
uint8
undefined

decreaseAllowance

function decreaseAllowance(address spender, uint256 subtractedValue) external nonpayable returns (bool)
Atomically decreases the allowance granted to spender by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - spender cannot be the zero address. - spender must have allowance for the caller of at least subtractedValue.

Parameters

Name
Type
Description
spender
address
undefined
subtractedValue
uint256
undefined

Returns

Name
Type
Description
_0
bool
undefined

decreaseReceiveAllowance

function decreaseReceiveAllowance(address _owner, uint256 _subtractedValue) external nonpayable returns (bool)
Atomically decreases the receive allowance granted to owner by the caller. This is an alternative to {receive approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {ReceiveApproval} event indicating the updated receive allowance.

Parameters

Name
Type
Description
_owner
address
owner of debt token that is being allowed sending it to the caller
_subtractedValue
uint256
amount of token to decrease allowance

Returns

Name
Type
Description
_0
bool
true if succeeded

increaseAllowance

function increaseAllowance(address spender, uint256 addedValue) external nonpayable returns (bool)
Atomically increases the allowance granted to spender by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - spender cannot be the zero address.

Parameters

Name
Type
Description
spender
address
undefined
addedValue
uint256
undefined

Returns

Name
Type
Description
_0
bool
undefined

increaseReceiveAllowance

function increaseReceiveAllowance(address _owner, uint256 _addedValue) external nonpayable returns (bool)
Atomically increases the receive allowance granted to owner by the caller. This is an alternative to {receive approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {ReceiveApproval} event indicating the updated receive allowance.

Parameters

Name
Type
Description
_owner
address
owner of debt token that is being allowed sending it to the caller
_addedValue
uint256
amount of token to increase allowance

Returns

Name
Type
Description
_0
bool
true if succeeded

mint

function mint(address _account, uint256 _amount) external nonpayable
Mint method for Silo to create debt positon

Parameters

Name
Type
Description
_account
address
wallet for which to mint token
_amount
uint256
amount of token to be minted

name

function name() external view returns (string)
Returns the name of the token.

Returns

Name
Type
Description
_0
string
undefined

receiveAllowance

function receiveAllowance(address _owner, address _receiver) external view returns (uint256)
Returns the remaining number of tokens that _owner is allowed to send to _receiver through {transferFrom}. This is zero by default.

Parameters

Name
Type
Description
_owner
address
owner of debt token
_receiver
address
wallet that is receiving debt tokens

Returns

Name
Type
Description
_0
uint256
current token allowance

setReceiveApproval

function setReceiveApproval(address owner, uint256 _amount) external nonpayable returns (bool)
Sets _amount as the allowance of spender over the caller's tokens. Returns a boolean value indicating whether the operation succeeded. IMPORTANT: Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 OR use increase/decrease approval method instead. Emits an {ReceiveApproval} event.

Parameters

Name
Type
Description
owner
address
undefined
_amount
uint256
amount of token allowance

Returns

Name
Type
Description
_0
bool
true if succeeded

silo

function silo() external view returns (contract ISilo)
Silo address for which tokens was deployed

Returns

Name
Type
Description
_0
contract ISilo
undefined

symbol

function symbol() external view returns (string)
Returns token symbol

Returns

Name
Type
Description
_0
string
token symbol

totalSupply

function totalSupply() external view returns (uint256)
See {IERC20-totalSupply}.

Returns

Name
Type
Description
_0
uint256
undefined

transfer

function transfer(address recipient, uint256 amount) external nonpayable returns (bool)
See {IERC20-transfer}. Requirements: - recipient cannot be the zero address. - the caller must have a balance of at least amount.

Parameters

Name
Type
Description
recipient
address
undefined
amount
uint256
undefined

Returns

Name
Type
Description
_0
bool
undefined

transferFrom

function transferFrom(address sender, address recipient, uint256 amount) external nonpayable returns (bool)
See {IERC20-transferFrom}. Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}. Requirements: - sender and recipient cannot be the zero address. - sender must have a balance of at least amount. - the caller must have allowance for sender's tokens of at least amount.

Parameters

Name
Type
Description
sender
address
undefined
recipient
address
undefined
amount
uint256
undefined

Returns

Name
Type
Description
_0
bool
undefined

Events

Approval

event Approval(address indexed owner, address indexed spender, uint256 value)

Parameters

Name
Type
Description
owner indexed
address
undefined
spender indexed
address
undefined
value
uint256
undefined

NotificationSent

event NotificationSent(contract INotificationReceiver notificationReceiver, bool success)
Emitted every time receiver is notified about token transfer

Parameters

Name
Type
Description
notificationReceiver
contract INotificationReceiver
undefined
success
bool
undefined

ReceiveApproval

event ReceiveApproval(address indexed _owner, address indexed _receiver, uint256 _value)

Parameters

Name
Type
Description
_owner indexed
address
undefined
_receiver indexed
address
undefined
_value
uint256
undefined

Transfer

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

Parameters

Name
Type
Description
from indexed
address
undefined
to indexed
address
undefined
value
uint256
undefined
Copy link
On this page
Methods
allowance
approve
asset
balanceOf
burn
decimals
decreaseAllowance
decreaseReceiveAllowance
increaseAllowance
increaseReceiveAllowance
mint
name
receiveAllowance
setReceiveApproval
silo
symbol
totalSupply
transfer
transferFrom
Events
Approval
NotificationSent
ReceiveApproval
Transfer