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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under both the MIT license found in the
* LICENSE-MIT file in the root directory of this source tree and the Apache
* License, Version 2.0 found in the LICENSE-APACHE file in the root directory
* of this source tree.
*/
#![cfg(feature = "smallvec")]
use smallvec::Array;
use smallvec::SmallVec;
use crate::allocative_trait::Allocative;
use crate::impls::common::PTR_NAME;
use crate::key::Key;
use crate::visitor::Visitor;
impl<A> Allocative for SmallVec<A>
where
A: Array,
A::Item: Allocative,
{
fn visit<'a, 'b: 'a>(&self, visitor: &'a mut Visitor<'b>) {
let mut visitor = visitor.enter_self_sized::<Self>();
if self.spilled() {
let mut visitor = visitor.enter_unique(PTR_NAME, std::mem::size_of::<*const A::Item>());
for item in self {
visitor.visit_field(Key::new("data"), item);
}
// TODO(nga): spare capacity.
visitor.exit();
} else {
for item in self {
visitor.visit_field(Key::new("data"), item);
}
}
visitor.exit();
}
}
#[cfg(test)]
mod tests {
#[test]
fn test() {
// No test here because sizes depend on whether "union" feature is enabled.
}
}