22 lines
877 B
Rust
22 lines
877 B
Rust
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// Copyright 2018 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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/// A simple static assertion macro. The first argument should be a unique
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/// ALL_CAPS identifier that describes the condition.
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#[macro_export]
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macro_rules! static_assert {
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($name:ident: $test:expr) => {
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// Use the bool to access an array such that if the bool is false, the access
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// is out-of-bounds.
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#[allow(dead_code)]
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static $name: () = [()][!$test as usize];
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}
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}
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