1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 // pretty-expanded FIXME #23616
16 /// Returns the size of a type
17 pub fn size_of<T>() -> usize {
18 TypeInfo::size_of(None::<T>)
21 /// Returns the size of the type that `val` points to
22 pub fn size_of_val<T>(val: &T) -> usize {
26 pub trait TypeInfo: Sized {
27 fn size_of(_lame_type_hint: Option<Self>) -> usize;
28 fn size_of_val(&self) -> usize;
31 impl<T> TypeInfo for T {
32 /// The size of the type in bytes.
33 fn size_of(_lame_type_hint: Option<T>) -> usize {
37 /// Returns the size of the type of `self` in bytes.
38 fn size_of_val(&self) -> usize {
39 TypeInfo::size_of(None::<T>)