Struct Stack 

pub struct Stack { /* private fields */ }

Bounded script stack with Core’s 1000-item maximum depth.

Implementations

impl Stack

pub const MAX_DEPTH: usize = 1000

Maximum stack depth permitted by consensus script evaluation.

pub fn new() -> Self

Creates an empty stack.

pub fn push(&mut self, item: ScriptItem) -> Result<(), StackError>

Pushes one item, rejecting capacity overflow instead of panicking.

pub fn pop(&mut self) -> Result<ScriptItem, StackError>

Pops the top item.

pub fn peek(&self) -> Result<&ScriptItem, StackError>

Returns the top item without removing it.

pub fn len(&self) -> usize

Returns the number of stack items.

pub fn is_empty(&self) -> bool

Returns true when the stack is empty.

pub fn clear(&mut self)

Removes all stack items.

Trait Implementations

impl Clone for Stack

fn clone(&self) -> Stack

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Stack

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Stack

fn default() -> Stack

Returns the “default value” for a type.

impl Eq for Stack

impl PartialEq for Stack

fn eq(&self, other: &Stack) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Stack