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fb2aa57149
bitflags 2 has a shortcoming with using custom derives: you can't use custom derives (for e.g. MallocSizeOf) at the same time as bitflags's for the derives it supports. See https://github.com/bitflags/bitflags/issues/395 Differential Revision: https://phabricator.services.mozilla.com/D199941
61 lines
1.9 KiB
Rust
61 lines
1.9 KiB
Rust
// Copyright 2014 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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pub use bitflags::bitflags as bitflags2;
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pub use bitflags::parser;
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// Copy of the macro from bitflags 1.3.2, with the implicit derives
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// removed, because in 2.0, they're expected to be explicitly given
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// in the macro invocation. And because bitflags 1.3.2 itself always
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// adds an impl Debug, we need to remove #[derive(Debug)] from what
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// is passed in, which is what the __impl_bitflags_remove_derive_debug
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// macro does.
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#[macro_export(local_inner_macros)]
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macro_rules! bitflags {
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(
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$(#[$($outer:tt)+])*
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$vis:vis struct $BitFlags:ident: $T:ty {
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$(
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$(#[$inner:ident $($args:tt)*])*
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const $Flag:ident = $value:expr;
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)*
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}
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$($t:tt)*
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) => {
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$(#[$($outer)+])*
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#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
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$vis struct $BitFlags($T);
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impl core::fmt::Debug for $BitFlags {
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fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
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if self.is_empty() {
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core::write!(f, "{:#x}", Self::empty().bits())
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} else {
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$crate::parser::to_writer(self, f)
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}
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}
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}
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bitflags2! {
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impl $BitFlags: $T {
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$(
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$(#[$inner $($args)*])*
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const $Flag = $value;
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)*
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}
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}
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bitflags! {
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$($t)*
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}
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};
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() => {};
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}
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