Files
addr2line
adler
adler32
ahash
aho_corasick
angle
approx
backtrace
bitflags
blender
bytemuck
byteorder
case
cast_trait
cfg_if
chrono
color
color_quant
const_fn
crc32fast
crossbeam
crossbeam_channel
crossbeam_deque
crossbeam_epoch
crossbeam_queue
crossbeam_skiplist
crossbeam_utils
darling
darling_core
darling_macro
dds
deflate
densevec
derive_builder
derive_builder_core
dot
downcast_rs
dual_quat
either
erased_serde
failure
failure_derive
fixedbitset
float_cmp
fnv
freeimage
freeimage_sys
freetype
freetype_gl_sys
freetype_sys
freetypegl
futures
futures_channel
futures_core
futures_executor
futures_io
futures_macro
futures_sink
futures_task
futures_util
async_await
future
io
lock
sink
stream
task
fxhash
generational_arena
generic_array
getrandom
gif
gimli
glfw
glfw_sys
glin
glin_derive
glsl
half
harfbuzz
harfbuzz_ft_sys
harfbuzz_sys
hashbrown
human_sort
ident_case
image
indexmap
instant
itertools
itoa
jpeg_decoder
lazy_static
libc
libm
lock_api
log
lut_parser
matrixmultiply
memchr
memoffset
meshopt
miniz_oxide
monotonic_clock
mopa
mutiny_derive
na
nalgebra
base
geometry
linalg
ncollide3d
bounding_volume
interpolation
partitioning
pipeline
procedural
query
algorithms
closest_points
contact
distance
nonlinear_time_of_impact
point
proximity
ray
time_of_impact
visitors
shape
transformation
utils
nom
num_complex
num_cpus
num_integer
num_iter
num_rational
num_traits
numext_constructor
numext_fixed_uint
numext_fixed_uint_core
numext_fixed_uint_hack
object
once_cell
parking_lot
parking_lot_core
pathfinding
pennereq
petgraph
pin_project_lite
pin_utils
png
polygon2
ppv_lite86
proc_macro2
proc_macro_crate
proc_macro_hack
proc_macro_nested
quote
rand
rand_chacha
rand_core
rand_distr
raw_window_handle
rawpointer
rayon
rayon_core
rect_packer
regex
regex_syntax
retain_mut
rin
rin_app
rin_blender
rin_core
rin_gl
rin_graphics
rin_gui
rin_material
rin_math
rin_postpo
rin_scene
rin_util
rin_window
rinblender
rinecs
rinecs_derive
rinecs_derive_utils
ringui_derive
rustc_demangle
rusty_pool
ryu
scopeguard
seitan
seitan_derive
semver
semver_parser
serde
serde_derive
serde_json
shaderdata_derive
simba
slab
slice_of_array
slotmap
smallvec
std140_data
streaming_iterator
strsim
syn
synstructure
thiserror
thiserror_impl
thread_local
tiff
time
toml
typenum
unchecked_unwrap
unicode_xid
vec2
vec3
weezl
x11
zlib_sys
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
use futures_core::ready;
use futures_core::task::{Context, Poll};
use futures_io::AsyncWrite;
use futures_sink::Sink;
use std::io;
use std::pin::Pin;
use pin_project_lite::pin_project;

#[derive(Debug)]
struct Block<Item> {
    offset: usize,
    bytes: Item,
}

pin_project! {
    /// Sink for the [`into_sink`](super::AsyncWriteExt::into_sink) method.
    #[must_use = "sinks do nothing unless polled"]
    #[derive(Debug)]
    #[cfg_attr(docsrs, doc(cfg(feature = "sink")))]
    pub struct IntoSink<W, Item> {
        #[pin]
        writer: W,
        // An outstanding block for us to push into the underlying writer, along with an offset of how
        // far into this block we have written already.
        buffer: Option<Block<Item>>,
    }
}

impl<W: AsyncWrite, Item: AsRef<[u8]>> IntoSink<W, Item> {
    pub(super) fn new(writer: W) -> Self {
        Self { writer, buffer: None }
    }

    /// If we have an outstanding block in `buffer` attempt to push it into the writer, does _not_
    /// flush the writer after it succeeds in pushing the block into it.
    fn poll_flush_buffer(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Result<(), io::Error>>
    {
        let mut this = self.project();

        if let Some(buffer) = this.buffer {
            loop {
                let bytes = buffer.bytes.as_ref();
                let written = ready!(this.writer.as_mut().poll_write(cx, &bytes[buffer.offset..]))?;
                buffer.offset += written;
                if buffer.offset == bytes.len() {
                    break;
                }
            }
        }
        *this.buffer = None;
        Poll::Ready(Ok(()))
    }

}

impl<W: AsyncWrite, Item: AsRef<[u8]>> Sink<Item> for IntoSink<W, Item> {
    type Error = io::Error;

    fn poll_ready(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Result<(), Self::Error>>
    {
        ready!(self.poll_flush_buffer(cx))?;
        Poll::Ready(Ok(()))
    }

    #[allow(clippy::debug_assert_with_mut_call)]
    fn start_send(
        self: Pin<&mut Self>,
        item: Item,
    ) -> Result<(), Self::Error>
    {
        debug_assert!(self.buffer.is_none());
        *self.project().buffer = Some(Block { offset: 0, bytes: item });
        Ok(())
    }

    fn poll_flush(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Result<(), Self::Error>>
    {
        ready!(self.as_mut().poll_flush_buffer(cx))?;
        ready!(self.project().writer.poll_flush(cx))?;
        Poll::Ready(Ok(()))
    }

    fn poll_close(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Result<(), Self::Error>>
    {
        ready!(self.as_mut().poll_flush_buffer(cx))?;
        ready!(self.project().writer.poll_close(cx))?;
        Poll::Ready(Ok(()))
    }
}