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-rw-r--r--src/tools/rust-analyzer/crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/bridge/buffer.rs156
1 files changed, 0 insertions, 156 deletions
diff --git a/src/tools/rust-analyzer/crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/bridge/buffer.rs b/src/tools/rust-analyzer/crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/bridge/buffer.rs
deleted file mode 100644
index 48030f8d8..000000000
--- a/src/tools/rust-analyzer/crates/proc-macro-srv/src/abis/abi_1_64/proc_macro/bridge/buffer.rs
+++ /dev/null
@@ -1,156 +0,0 @@
-//! Buffer management for same-process client<->server communication.
-
-use std::io::{self, Write};
-use std::mem;
-use std::ops::{Deref, DerefMut};
-use std::slice;
-
-#[repr(C)]
-pub struct Buffer {
- data: *mut u8,
- len: usize,
- capacity: usize,
- reserve: extern "C" fn(Buffer, usize) -> Buffer,
- drop: extern "C" fn(Buffer),
-}
-
-unsafe impl Sync for Buffer {}
-unsafe impl Send for Buffer {}
-
-impl Default for Buffer {
- #[inline]
- fn default() -> Self {
- Self::from(vec![])
- }
-}
-
-impl Deref for Buffer {
- type Target = [u8];
- #[inline]
- fn deref(&self) -> &[u8] {
- unsafe { slice::from_raw_parts(self.data as *const u8, self.len) }
- }
-}
-
-impl DerefMut for Buffer {
- #[inline]
- fn deref_mut(&mut self) -> &mut [u8] {
- unsafe { slice::from_raw_parts_mut(self.data, self.len) }
- }
-}
-
-impl Buffer {
- #[inline]
- pub(super) fn new() -> Self {
- Self::default()
- }
-
- #[inline]
- pub(super) fn clear(&mut self) {
- self.len = 0;
- }
-
- #[inline]
- pub(super) fn take(&mut self) -> Self {
- mem::take(self)
- }
-
- // We have the array method separate from extending from a slice. This is
- // because in the case of small arrays, codegen can be more efficient
- // (avoiding a memmove call). With extend_from_slice, LLVM at least
- // currently is not able to make that optimization.
- #[inline]
- pub(super) fn extend_from_array<const N: usize>(&mut self, xs: &[u8; N]) {
- if xs.len() > (self.capacity - self.len) {
- let b = self.take();
- *self = (b.reserve)(b, xs.len());
- }
- unsafe {
- xs.as_ptr().copy_to_nonoverlapping(self.data.add(self.len), xs.len());
- self.len += xs.len();
- }
- }
-
- #[inline]
- pub(super) fn extend_from_slice(&mut self, xs: &[u8]) {
- if xs.len() > (self.capacity - self.len) {
- let b = self.take();
- *self = (b.reserve)(b, xs.len());
- }
- unsafe {
- xs.as_ptr().copy_to_nonoverlapping(self.data.add(self.len), xs.len());
- self.len += xs.len();
- }
- }
-
- #[inline]
- pub(super) fn push(&mut self, v: u8) {
- // The code here is taken from Vec::push, and we know that reserve()
- // will panic if we're exceeding isize::MAX bytes and so there's no need
- // to check for overflow.
- if self.len == self.capacity {
- let b = self.take();
- *self = (b.reserve)(b, 1);
- }
- unsafe {
- *self.data.add(self.len) = v;
- self.len += 1;
- }
- }
-}
-
-impl Write for Buffer {
- #[inline]
- fn write(&mut self, xs: &[u8]) -> io::Result<usize> {
- self.extend_from_slice(xs);
- Ok(xs.len())
- }
-
- #[inline]
- fn write_all(&mut self, xs: &[u8]) -> io::Result<()> {
- self.extend_from_slice(xs);
- Ok(())
- }
-
- #[inline]
- fn flush(&mut self) -> io::Result<()> {
- Ok(())
- }
-}
-
-impl Drop for Buffer {
- #[inline]
- fn drop(&mut self) {
- let b = self.take();
- (b.drop)(b);
- }
-}
-
-impl From<Vec<u8>> for Buffer {
- fn from(mut v: Vec<u8>) -> Self {
- let (data, len, capacity) = (v.as_mut_ptr(), v.len(), v.capacity());
- mem::forget(v);
-
- // This utility function is nested in here because it can *only*
- // be safely called on `Buffer`s created by *this* `proc_macro`.
- fn to_vec(b: Buffer) -> Vec<u8> {
- unsafe {
- let Buffer { data, len, capacity, .. } = b;
- mem::forget(b);
- Vec::from_raw_parts(data, len, capacity)
- }
- }
-
- extern "C" fn reserve(b: Buffer, additional: usize) -> Buffer {
- let mut v = to_vec(b);
- v.reserve(additional);
- Buffer::from(v)
- }
-
- extern "C" fn drop(b: Buffer) {
- mem::drop(to_vec(b));
- }
-
- Buffer { data, len, capacity, reserve, drop }
- }
-}