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use kind::*;
use ops::constructor::*;
use ops::cardinality::*;
use ops::sequence::*;
use ops::multiset::*;
use std::ops::{Deref, DerefMut};
use std::marker::PhantomData;
pub struct Stack<S, Ordering>
{
seq: S,
phantom_ordering: PhantomData<Ordering>
}
impl<S, Ordering> Stack<S, Ordering>
{
pub fn wrap(seq: S) -> Self {
Stack {
seq: seq,
phantom_ordering: PhantomData
}
}
}
impl<S, Ordering> Collection for Stack<S, Ordering> where
S: Collection
{
type Item = <S as Collection>::Item;
}
impl<S, Ordering> Deref for Stack<S, Ordering>
{
type Target = S;
fn deref<'a>(&'a self) -> &'a S {
&self.seq
}
}
impl<S, Ordering> DerefMut for Stack<S, Ordering>
{
fn deref_mut<'a>(&'a mut self) -> &'a mut S {
&mut self.seq
}
}
impl<S, Ordering> Empty for Stack<S, Ordering> where
S: Empty
{
fn empty() -> Self {
Stack::wrap(S::empty())
}
}
impl<S, Ordering> Cardinality for Stack<S, Ordering> where
S: Cardinality
{
type Size = <S as Cardinality>::Size;
fn size(&self) -> Self::Size {
self.seq.size()
}
}
impl<S, Ordering> Insert for Stack<S, Ordering> where
S: Push<Ordering>
{
fn insert(&mut self, value: Self::Item) {
self.push(value);
}
}
impl<S, Ordering> Extract for Stack<S, Ordering> where
S: Pop<Ordering>
{
fn extract(&mut self) -> Option<Self::Item> {
self.pop()
}
}