[−][src]Struct olin::Resource
Resources are maybe readable, maybe writable, maybe flushable and closable
streams of bytes. A resource is backed by implementation in the containing
runtime based on the URL scheme used in the open
call.
Resources do not always have to be backed by things that exist. Resources may contain the transient results of API calls. Once the data in a Resource has been read, that may be the only time that data can ever be read.
Please take this into consideration when consuming the results of Resources.
The implementation of this type uses the functions at https://github.com/CommonWA/cwa-spec/blob/master/ns/resource.md
Implementations
impl Resource
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pub fn open(url: &str) -> Result<Resource, Error>
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pub unsafe fn from_raw(handle: i32) -> Resourceⓘ
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For the few times you actually do know the file descriptor.
The CommonWA spec doesn't mandate any properties about file descriptors. The implementation in Olin uses random file descriptors, meaning that unless the stdio module is used, this function should probably never be called unless you really know what you are doing.
Passing an invalid file descriptor to this function will result in a handle that returns errors on every call to it. This behavior may be useful.
Trait Implementations
impl Debug for Resource
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impl Drop for Resource
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impl Read for Resource
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fn read(&mut self, out: &mut [u8]) -> Result<usize>
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fn read_vectored(&mut self, bufs: &mut [IoSliceMut]) -> Result<usize, Error>
1.36.0[src]
fn is_read_vectored(&self) -> bool
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unsafe fn initializer(&self) -> Initializer
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fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
1.0.0[src]
fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
1.0.0[src]
fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
1.6.0[src]
fn by_ref(&mut self) -> &mut Self
1.0.0[src]
fn bytes(self) -> Bytes<Self>
1.0.0[src]
fn chain<R>(self, next: R) -> Chain<Self, R> where
R: Read,
1.0.0[src]
R: Read,
fn take(self, limit: u64) -> Take<Self>
1.0.0[src]
impl Write for Resource
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fn write(&mut self, data: &[u8]) -> Result<usize>
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fn flush(&mut self) -> Result<()>
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fn write_vectored(&mut self, bufs: &[IoSlice]) -> Result<usize, Error>
1.36.0[src]
fn is_write_vectored(&self) -> bool
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fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
1.0.0[src]
fn write_all_vectored(&mut self, bufs: &mut [IoSlice]) -> Result<(), Error>
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fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>
1.0.0[src]
fn by_ref(&mut self) -> &mut Self
1.0.0[src]
Auto Trait Implementations
impl RefUnwindSafe for Resource
impl Send for Resource
impl Sync for Resource
impl Unpin for Resource
impl UnwindSafe for Resource
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<R> ReadBytesExt for R where
R: Read + ?Sized,
R: Read + ?Sized,
fn read_u8(&mut self) -> Result<u8, Error>
fn read_i8(&mut self) -> Result<i8, Error>
fn read_u16<T>(&mut self) -> Result<u16, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_i16<T>(&mut self) -> Result<i16, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_u24<T>(&mut self) -> Result<u32, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_i24<T>(&mut self) -> Result<i32, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_u32<T>(&mut self) -> Result<u32, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_i32<T>(&mut self) -> Result<i32, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_u48<T>(&mut self) -> Result<u64, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_i48<T>(&mut self) -> Result<i64, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_u64<T>(&mut self) -> Result<u64, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_i64<T>(&mut self) -> Result<i64, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_uint<T>(&mut self, nbytes: usize) -> Result<u64, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_int<T>(&mut self, nbytes: usize) -> Result<i64, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_f32<T>(&mut self) -> Result<f32, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_f64<T>(&mut self) -> Result<f64, Error> where
T: ByteOrder,
T: ByteOrder,
fn read_u16_into<T>(&mut self, dst: &mut [u16]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_u32_into<T>(&mut self, dst: &mut [u32]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_u64_into<T>(&mut self, dst: &mut [u64]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_i16_into<T>(&mut self, dst: &mut [i16]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_i32_into<T>(&mut self, dst: &mut [i32]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_i64_into<T>(&mut self, dst: &mut [i64]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_f32_into<T>(&mut self, dst: &mut [f32]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_f32_into_unchecked<T>(&mut self, dst: &mut [f32]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_f64_into<T>(&mut self, dst: &mut [f64]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn read_f64_into_unchecked<T>(&mut self, dst: &mut [f64]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<W> WriteBytesExt for W where
W: Write + ?Sized,
W: Write + ?Sized,
fn write_u8(&mut self, n: u8) -> Result<(), Error>
fn write_i8(&mut self, n: i8) -> Result<(), Error>
fn write_u16<T>(&mut self, n: u16) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_i16<T>(&mut self, n: i16) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_u24<T>(&mut self, n: u32) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_i24<T>(&mut self, n: i32) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_u32<T>(&mut self, n: u32) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_i32<T>(&mut self, n: i32) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_u48<T>(&mut self, n: u64) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_i48<T>(&mut self, n: i64) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_u64<T>(&mut self, n: u64) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_i64<T>(&mut self, n: i64) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_uint<T>(&mut self, n: u64, nbytes: usize) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_int<T>(&mut self, n: i64, nbytes: usize) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_f32<T>(&mut self, n: f32) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
fn write_f64<T>(&mut self, n: f64) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,