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make write stream borrow the data to allow splitting/reserving

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This commit is contained in:
Robin Appelman 2021-07-14 23:35:13 +02:00
commit 9bced05a9d
6 changed files with 480 additions and 126 deletions
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61
bitbuffer_derive/tests/write.rs
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@ -50,9 +50,10 @@ fn test_read_struct() {
asd: 0b101,
previous_field: 0b1010_0,
};
let mut stream = BitWriteStream::new(LittleEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, LittleEndian);
stream.write(&val).unwrap();
assert_eq!(bytes, stream.finish());
assert_eq!(bytes, data);
}
#[derive(BitWrite, PartialEq, Debug)]
@ -66,12 +67,13 @@ enum TestBareEnum {
#[test]
fn test_read_bare_enum() {
let bytes = vec![0b1100_0100];
let mut stream = BitWriteStream::new(BigEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, BigEndian);
stream.write(&TestBareEnum::Asd).unwrap();
stream.write(&TestBareEnum::Foo).unwrap();
stream.write(&TestBareEnum::Bar).unwrap();
assert_eq!(bytes, stream.finish());
assert_eq!(bytes, data);
}
#[derive(BitWrite, BitRead, PartialEq, Debug)]
@ -87,7 +89,8 @@ enum TestUnnamedFieldEnum {
#[test]
fn test_read_unnamed_field_enum() {
let bytes = vec![0b1100_0110, 0b1000_0110, 0b1011_0000];
let mut stream = BitWriteStream::new(BigEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, BigEndian);
stream
.write(&TestUnnamedFieldEnum::Asd(0b_00_0110_10))
.unwrap();
@ -98,8 +101,7 @@ fn test_read_unnamed_field_enum() {
stream.write(&TestUnnamedFieldEnum::Bar(true)).unwrap();
let result = stream.finish();
let mut read = BitReadStream::<BigEndian>::from(result.as_slice());
let mut read = BitReadStream::<BigEndian>::from(data.as_slice());
assert_eq!(
TestUnnamedFieldEnum::Asd(0b_00_0110_10),
@ -108,7 +110,7 @@ fn test_read_unnamed_field_enum() {
assert_eq!(TestUnnamedFieldEnum::Foo(0b11_0_1), read.read().unwrap());
assert_eq!(TestUnnamedFieldEnum::Bar(true), read.read().unwrap());
assert_eq!(bytes, result);
assert_eq!(bytes, data);
}
#[derive(BitWriteSized, BitReadSized, PartialEq, Debug)]
@ -123,19 +125,19 @@ struct TestStructSized {
#[test]
fn test_read_struct_sized() {
let bytes = vec![12, 'h' as u8, 'e' as u8, 'l' as u8, 0b1000_0000];
let mut stream = BitWriteStream::new(BigEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, BigEndian);
let val = TestStructSized {
foo: 12,
string: "hel".to_owned(),
int: 4,
};
stream.write_sized(&val, 3).unwrap();
let result = stream.finish();
let mut read = BitReadStream::<BigEndian>::from(result.as_slice());
let mut read = BitReadStream::<BigEndian>::from(data.as_slice());
assert_eq!(val, read.read_sized(3).unwrap());
assert_eq!(bytes, result);
assert_eq!(bytes, data);
}
#[derive(BitWriteSized, PartialEq, Debug)]
@ -152,11 +154,12 @@ enum TestUnnamedFieldEnumSized {
#[test]
fn test_read_unnamed_field_enum_sized() {
let bytes = vec![0b1100_0110];
let mut stream = BitWriteStream::new(BigEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, BigEndian);
stream
.write_sized(&TestUnnamedFieldEnumSized::Asd(0b_00_0110), 6)
.unwrap();
assert_eq!(bytes, stream.finish());
assert_eq!(bytes, data);
}
#[derive(BitWrite, PartialEq, Debug)]
@ -181,14 +184,15 @@ fn test_read_struct2() {
'r' as u8,
'l' as u8,
];
let mut stream = BitWriteStream::new(BigEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, BigEndian);
stream
.write(&TestStruct2 {
size: 5,
str: "hello worl".to_owned(),
})
.unwrap();
assert_eq!(bytes, stream.finish());
assert_eq!(bytes, data);
}
#[derive(BitWrite)]
@ -202,7 +206,8 @@ struct TestStruct3<'a, E: Endianness> {
#[test]
fn test_read_struct3() {
let bytes = vec![0b0000_0101, 0b1010_1000];
let mut stream = BitWriteStream::new(BigEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, BigEndian);
let mut inner = BitReadStream::from(BitReadBuffer::new(&[0b1010_1010], BigEndian));
let inner = inner.read_bits(5).unwrap();
@ -212,7 +217,7 @@ fn test_read_struct3() {
stream: inner,
};
stream.write(&val).unwrap();
assert_eq!(bytes, stream.finish());
assert_eq!(bytes, data);
}
#[derive(BitWrite, PartialEq, Debug)]
@ -227,14 +232,15 @@ enum TestEnumRest {
#[test]
fn test_read_rest_enum() {
let bytes = vec![0b1000_0110];
let mut stream = BitWriteStream::new(BigEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, BigEndian);
stream.write(&TestEnumRest::Asd).unwrap();
stream.write(&TestEnumRest::Foo).unwrap();
stream.write(&TestEnumRest::Bar).unwrap();
stream.write(&TestEnumRest::Asd).unwrap();
assert_eq!(bytes, stream.finish());
assert_eq!(bytes, data);
}
#[derive(BitWrite, PartialEq, Debug)]
@ -244,21 +250,23 @@ fn test_unnamed_struct() {
let bytes = vec![
12, 'h' as u8, 'e' as u8, 'l' as u8, 'l' as u8, 'o' as u8, 0, 0, 0, 0, 0, 0,
];
let mut stream = BitWriteStream::new(LittleEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, LittleEndian);
stream
.write(&UnnamedSize(12, "hello".to_string(), false))
.unwrap();
assert_eq!(bytes, stream.finish());
assert_eq!(bytes, data);
}
#[derive(BitWrite, PartialEq, Debug)]
struct EmptyStruct;
fn test_empty_struct() {
let mut stream = BitWriteStream::new(LittleEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, LittleEndian);
stream.write(&EmptyStruct).unwrap();
assert_eq!(Vec::<u8>::new(), stream.finish());
assert_eq!(Vec::<u8>::new(), data);
}
#[derive(BitWrite)]
@ -271,12 +279,13 @@ struct TestSizeExpression {
#[test]
fn test_read_size_expression() {
let bytes = vec![0b0000_0011, b'a', b'b', b'c', b'd', b'e'];
let mut stream = BitWriteStream::new(BigEndian);
let mut data = Vec::new();
let mut stream = BitWriteStream::new(&mut data, BigEndian);
let val = TestSizeExpression {
size: 3,
str: String::from("abcde"),
};
stream.write(&val).unwrap();
assert_eq!(bytes, stream.finish());
assert_eq!(bytes, data);
}