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41 lines
888 B
Rust
41 lines
888 B
Rust
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use smallvec::{Array, SmallVec};
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use std::marker::PhantomData;
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pub trait Push<T> {
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fn push(&mut self, value: T);
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}
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impl<T> Push<T> for Vec<T> {
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fn push(&mut self, value: T) {
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Vec::push(self, value);
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}
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}
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impl<A: Array> Push<A::Item> for SmallVec<A> {
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fn push(&mut self, value: A::Item) {
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SmallVec::push(self, value);
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}
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}
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pub struct ForgetfulSink<T>(bool, PhantomData<T>);
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impl<T> ForgetfulSink<T> {
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pub fn new() -> Self {
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ForgetfulSink(true, PhantomData)
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}
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pub fn is_empty(&self) -> bool {
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self.0
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}
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}
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impl<T> Push<T> for ForgetfulSink<T> {
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fn push(&mut self, _value: T) {
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self.0 = false;
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}
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}
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