cleanup(serde_v8): disambiguate ZeroCopyBuf (#14380)

1 files changed, 0 insertions, 105 deletions

diff --git a/serde_v8/magic/zero_copy_buf.rs b/serde_v8/magic/zero_copy_buf.rs
deleted file mode 100644
index a9dc6334c..000000000
--- a/serde_v8/magic/zero_copy_buf.rs
+++ /dev/null
@@ -1,105 +0,0 @@
-// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
-
-use std::ops::Deref;
-use std::ops::DerefMut;
-use std::ops::Range;
-
-use super::transl8::FromV8;
-
-/// A ZeroCopyBuf encapsulates a slice that's been borrowed from a JavaScript
-/// ArrayBuffer object. JavaScript objects can normally be garbage collected,
-/// but the existence of a ZeroCopyBuf inhibits this until it is dropped. It
-/// behaves much like an Arc<[u8]>.
-///
-/// # Cloning
-/// Cloning a ZeroCopyBuf does not clone the contents of the buffer,
-/// it creates a new reference to that buffer.
-///
-/// To actually clone the contents of the buffer do
-/// `let copy = Vec::from(&*zero_copy_buf);`
-#[derive(Clone)]
-pub struct ZeroCopyBuf {
-  pub(crate) store: v8::SharedRef<v8::BackingStore>,
-  pub(crate) range: Range<usize>,
-}
-
-unsafe impl Send for ZeroCopyBuf {}
-
-impl ZeroCopyBuf {
-  pub fn from_buffer(
-    buffer: v8::Local<v8::ArrayBuffer>,
-    range: Range<usize>,
-  ) -> Result<Self, v8::DataError> {
-    let store = buffer.get_backing_store();
-    if store.is_shared() {
-      return Err(v8::DataError::BadType {
-        actual: "shared ArrayBufferView",
-        expected: "non-shared ArrayBufferView",
-      });
-    }
-    Ok(Self { store, range })
-  }
-
-  fn as_slice(&self) -> &[u8] {
-    unsafe { &*(&self.store[self.range.clone()] as *const _ as *const [u8]) }
-  }
-
-  #[allow(clippy::cast_ref_to_mut)]
-  fn as_slice_mut(&mut self) -> &mut [u8] {
-    unsafe { &mut *(&self.store[self.range.clone()] as *const _ as *mut [u8]) }
-  }
-}
-
-pub(crate) fn to_ranged_buffer<'s>(
-  scope: &mut v8::HandleScope<'s>,
-  value: v8::Local<v8::Value>,
-) -> Result<(v8::Local<'s, v8::ArrayBuffer>, Range<usize>), v8::DataError> {
-  if value.is_array_buffer_view() {
-    let view: v8::Local<v8::ArrayBufferView> = value.try_into()?;
-    let (offset, len) = (view.byte_offset(), view.byte_length());
-    let buffer = view.buffer(scope).ok_or(v8::DataError::NoData {
-      expected: "view to have a buffer",
-    })?;
-    let buffer = v8::Local::new(scope, buffer); // recreate handle to avoid lifetime issues
-    return Ok((buffer, offset..offset + len));
-  }
-  let b: v8::Local<v8::ArrayBuffer> = value.try_into()?;
-  let b = v8::Local::new(scope, b); // recreate handle to avoid lifetime issues
-  Ok((b, 0..b.byte_length()))
-}
-
-impl FromV8 for ZeroCopyBuf {
-  fn from_v8(
-    scope: &mut v8::HandleScope,
-    value: v8::Local<v8::Value>,
-  ) -> Result<Self, crate::Error> {
-    to_ranged_buffer(scope, value)
-      .and_then(|(b, r)| Self::from_buffer(b, r))
-      .map_err(|_| crate::Error::ExpectedBuffer)
-  }
-}
-
-impl Deref for ZeroCopyBuf {
-  type Target = [u8];
-  fn deref(&self) -> &[u8] {
-    self.as_slice()
-  }
-}
-
-impl DerefMut for ZeroCopyBuf {
-  fn deref_mut(&mut self) -> &mut [u8] {
-    self.as_slice_mut()
-  }
-}
-
-impl AsRef<[u8]> for ZeroCopyBuf {
-  fn as_ref(&self) -> &[u8] {
-    self.as_slice()
-  }
-}
-
-impl AsMut<[u8]> for ZeroCopyBuf {
-  fn as_mut(&mut self) -> &mut [u8] {
-    self.as_slice_mut()
-  }
-}