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Code Issues Releases Wiki Activity

allow deriving BitReadSized for enums

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This commit is contained in:
Robin Appelman 2019-02-28 20:24:43 +01:00
commit a2b0d4ffb4
4 changed files with 113 additions and 22 deletions
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40
bitstream_reader_derive/tests/test.rs
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@ -87,6 +87,7 @@ fn test_read_bare_enum() {
#[derive(BitRead, PartialEq, Debug)]
#[discriminant_bits = 2]
enum TestUnnamedFieldEnum {
#[size = 5]
Foo(i8),
Bar(bool),
#[discriminant = 3]
@ -113,11 +114,8 @@ fn test_read_unnamed_field_enum() {
);
assert_eq!(10, stream.pos());
stream.set_pos(2).unwrap();
assert_eq!(
TestUnnamedFieldEnum::Foo(0b11_0_1000),
stream.read().unwrap()
);
assert_eq!(12, stream.pos());
assert_eq!(TestUnnamedFieldEnum::Foo(0b11_0_1), stream.read().unwrap());
assert_eq!(9, stream.pos());
stream.set_pos(4).unwrap();
assert_eq!(TestUnnamedFieldEnum::Bar(true), stream.read().unwrap());
assert_eq!(7, stream.pos());
@ -148,3 +146,35 @@ fn test_read_struct_sized() {
stream.read_sized(3).unwrap()
);
}
#[derive(BitReadSized, PartialEq, Debug)]
#[discriminant_bits = 2]
enum TestUnnamedFieldEnumSized {
#[size = 5]
Foo(i8),
Bar(bool),
#[discriminant = 3]
#[size = "input_size"]
Asd(u8),
}
#[test]
fn test_read_unnamed_field_enum_sized() {
let bytes = vec![
0b1100_0110,
0b1000_0100,
0b1000_0100,
0b1000_0100,
0b1000_0100,
0b1000_0100,
0b1000_0100,
0b1000_0100,
];
let buffer = BitBuffer::new(bytes, BigEndian);
let mut stream = BitStream::from(buffer);
assert_eq!(
TestUnnamedFieldEnumSized::Asd(0b_00_0110),
stream.read_sized(6).unwrap()
);
assert_eq!(8, stream.pos());
}