45 lines
1.2 KiB
Rust
45 lines
1.2 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// pretty-expanded FIXME #23616
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#![feature(core)]
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use std::intrinsics;
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/// Returns the size of a type
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pub fn size_of<T>() -> usize {
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TypeInfo::size_of(None::<T>)
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}
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/// Returns the size of the type that `val` points to
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pub fn size_of_val<T>(val: &T) -> usize {
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val.size_of_val()
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}
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pub trait TypeInfo {
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fn size_of(_lame_type_hint: Option<Self>) -> usize;
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fn size_of_val(&self) -> usize;
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}
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impl<T> TypeInfo for T {
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/// The size of the type in bytes.
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fn size_of(_lame_type_hint: Option<T>) -> usize {
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unsafe { intrinsics::size_of::<T>() }
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}
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/// Returns the size of the type of `self` in bytes.
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fn size_of_val(&self) -> usize {
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TypeInfo::size_of(None::<T>)
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}
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}
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pub fn main() {}
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