user-defined tuple struct could be used to improve type safety.
TEST=cargo test
BUG=None
Change-Id: I8ce10fc51b79c277ab23029513b707f3dd621af5
Reviewed-on: https://chromium-review.googlesource.com/1546432
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
If we know the width of an enum type, we don't need 'power of 2' number
of variants.
BUG=None
TEST=cargo test
Change-Id: I8148b28f86bb8e4fd4f67d8a6382fc713dad1439
Reviewed-on: https://chromium-review.googlesource.com/1530455
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: Jingkui Wang <jkwang@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
Previously, the getter and setter functions generated for a bitfield
struct by #[bitfield] all operated on primitive types like bool, u8, u16
etc.
This CL adds support for getters and setters defined in terms of
user-defined enums.
We make an enum bitfield-compatible by adding #[bitfield]. The number of
variants must be a power of 2.
#[bitfield]
enum TwoBits {
Zero = 0b00,
One = 0b01,
Two = 0b10,
Three = 0b11,
}
And then it may be used to specify a field in a bitfield struct.
#[bitfield]
struct Struct {
prefix: BitField1,
two_bits: TwoBits,
suffix: BitField5,
}
The generated getters and setters for this struct would have the
following signatures:
impl Struct {
fn get_prefix(&self) -> u8;
fn set_prefix(&mut self, val: u8);
fn get_two_bits(&self) -> TwoBits;
fn set_two_bits(&mut self, val: TwoBits);
fn get_suffix(&self) -> u8;
fn set_suffix(&mut self, val: u8);
}
TEST=`cargo test` the bit_field and bit_field_derive crates
TEST=`cargo check` crosvm
Change-Id: Ibc8923e2877fda6ae8da5767731edcb68721a434
Reviewed-on: https://chromium-review.googlesource.com/1519686
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
