[−][src]Struct evm::Stack
Represents an EVM stack.
Methods
impl Stack
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pub fn check_pop_push(
&self,
pop: usize,
push: usize
) -> Result<(), OnChainError>
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&self,
pop: usize,
push: usize
) -> Result<(), OnChainError>
Check a pop-push cycle. If the check succeeded, push
, pop
,
set
, peek
within the limit should not fail.
pub fn push(&mut self, elem: M256) -> Result<(), OnChainError>
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Push a new value to the stack.
pub fn pop(&mut self) -> Result<M256, OnChainError>
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Pop a value from the stack.
pub fn set(&mut self, no_from_top: usize, val: M256) -> Result<(), OnChainError>
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Set a value at given index for the stack, where the top of the
stack is at index 0
. If the index is too large,
StackError::Underflow
is returned.
pub fn peek(&self, no_from_top: usize) -> Result<M256, OnChainError>
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Peek a value at given index for the stack, where the top of
the stack is at index 0
. If the index is too large,
StackError::Underflow
is returned.
pub fn len(&self) -> usize
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Get the current stack length.
pub fn is_empty(&self) -> bool
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Returns true if stack is empty
Trait Implementations
Auto Trait Implementations
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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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.
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.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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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,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Same<T> for T
type Output = T
Should always be Self