Struct forest_actor::util::BalanceTable [−][src]
pub struct BalanceTable<'a, BS>(_);
Balance table which handles getting and updating token balances specifically
Implementations
impl<'a, BS> BalanceTable<'a, BS> where
BS: BlockStore,
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BS: BlockStore,
pub fn new(bs: &'a BS) -> Self
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Initializes a new empty balance table
pub fn from_root(bs: &'a BS, cid: &Cid) -> Result<Self, Error>
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Initializes a balance table from a root Cid
pub fn root(&mut self) -> Result<Cid, Error>
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Retrieve root from balance table
pub fn get(&self, key: &Address) -> Result<TokenAmount, Box<dyn StdError>>
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Gets token amount for given address in balance table
pub fn add(
&mut self,
key: &Address,
value: &TokenAmount
) -> Result<(), Box<dyn StdError>>
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&mut self,
key: &Address,
value: &TokenAmount
) -> Result<(), Box<dyn StdError>>
Adds token amount to previously initialized account.
pub fn subtract_with_minimum(
&mut self,
key: &Address,
req: &TokenAmount,
floor: &TokenAmount
) -> Result<TokenAmount, Box<dyn StdError>>
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&mut self,
key: &Address,
req: &TokenAmount,
floor: &TokenAmount
) -> Result<TokenAmount, Box<dyn StdError>>
Subtracts up to the specified amount from a balance, without reducing the balance below some minimum. Returns the amount subtracted (always positive or zero).
pub fn must_subtract(
&mut self,
key: &Address,
req: &TokenAmount
) -> Result<(), Box<dyn StdError>>
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&mut self,
key: &Address,
req: &TokenAmount
) -> Result<(), Box<dyn StdError>>
Subtracts value from a balance, and errors if full amount was not substracted.
pub fn total(&self) -> Result<TokenAmount, Box<dyn StdError>>
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Returns total balance held by this balance table
Auto Trait Implementations
impl<'a, BS> !RefUnwindSafe for BalanceTable<'a, BS>
impl<'a, BS> Send for BalanceTable<'a, BS> where
BS: Sync,
BS: Sync,
impl<'a, BS> !Sync for BalanceTable<'a, BS>
impl<'a, BS> Unpin for BalanceTable<'a, BS>
impl<'a, BS> UnwindSafe for BalanceTable<'a, BS> where
BS: RefUnwindSafe,
BS: RefUnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Pointable for T
pub const ALIGN: usize
type Init = T
The type for initializers.
pub unsafe fn init(init: <T as Pointable>::Init) -> usize
pub unsafe fn deref<'a>(ptr: usize) -> &'a T
pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T
pub unsafe fn drop(ptr: usize)
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,