mirror of
https://chromium.googlesource.com/crosvm/crosvm
synced 2024-10-26 05:44:24 +00:00
aecf9a4dee
In Rust 2018 edition, `extern crate` is no longer required for importing
from other crates. Instead of writing:
extern crate dep;
use dep::Thing;
we write:
use dep::Thing;
In this approach, macros are imported individually from the declaring
crate rather than through #[macro_use]. Before:
#[macro_use]
extern crate sys_util;
After:
use sys_util::{debug, error};
The only place that `extern crate` continues to be required is in
importing the compiler's proc_macro API into a procedural macro crate.
This will hopefully be fixed in a future Rust release.
extern crate proc_macro;
TEST=cargo check
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu
TEST=local kokoro
Change-Id: I0b43768c0d81f2a250b1959fb97ba35cbac56293
Reviewed-on: https://chromium-review.googlesource.com/1565302
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
49 lines
993 B
Rust
49 lines
993 B
Rust
use bit_field::*;
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#[bitfield]
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#[derive(Debug, PartialEq)]
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enum TwoBits {
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Zero = 0b00,
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One = 0b01,
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Two = 0b10,
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Three = 0b11,
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}
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#[bitfield]
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#[bits = 3]
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#[derive(Debug, PartialEq)]
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enum ThreeBits {
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Zero = 0b00,
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One = 0b01,
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Two = 0b10,
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Three = 0b111,
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}
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#[bitfield]
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struct Struct {
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prefix: BitField1,
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two_bits: TwoBits,
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three_bits: ThreeBits,
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suffix: BitField2,
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}
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#[test]
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fn test_enum() {
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let mut s = Struct::new();
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assert_eq!(s.get(0, 8), 0b_0000_0000);
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assert_eq!(s.get_two_bits(), TwoBits::Zero);
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s.set_two_bits(TwoBits::Three);
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assert_eq!(s.get(0, 8), 0b_0000_0110);
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assert_eq!(s.get_two_bits(), TwoBits::Three);
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s.set(0, 8, 0b_1010_1010);
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// ^^ TwoBits
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// ^^_^ Three Bits.
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assert_eq!(s.get_two_bits(), TwoBits::One);
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assert_eq!(s.get_three_bits().unwrap_err().raw_val(), 0b101);
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s.set_three_bits(ThreeBits::Two);
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assert_eq!(s.get(0, 8), 0b_1001_0010);
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}
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