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9b2b8df927
Uses SeqOneByteString optimization to do zero-copy `&str` arguments in fast calls. - [x] Depends on https://github.com/denoland/rusty_v8/pull/1129 - [x] Depends on https://chromium-review.googlesource.com/c/v8/v8/+/4036884 - [x] Disable in async ops - [x] Make it work with owned `String` with an extra alloc in fast path. - [x] Support `Cow<'_, str>`. Owned for slow case, Borrowed for fast case ```rust #[op] fn op_string_len(s: &str) -> u32 { str.len() as u32 } ```
100 lines
3.3 KiB
Text
100 lines
3.3 KiB
Text
#[allow(non_camel_case_types)]
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///Auto-generated by `deno_ops`, i.e: `#[op]`
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///
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///Use `op_string_length::decl()` to get an op-declaration
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///you can include in a `deno_core::Extension`.
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pub struct op_string_length;
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#[doc(hidden)]
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impl op_string_length {
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pub fn name() -> &'static str {
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stringify!(op_string_length)
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}
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pub fn v8_fn_ptr<'scope>() -> deno_core::v8::FunctionCallback {
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use deno_core::v8::MapFnTo;
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Self::v8_func.map_fn_to()
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}
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pub fn decl<'scope>() -> deno_core::OpDecl {
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deno_core::OpDecl {
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name: Self::name(),
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v8_fn_ptr: Self::v8_fn_ptr(),
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enabled: true,
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fast_fn: Some(
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Box::new(op_string_length_fast {
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_phantom: ::std::marker::PhantomData,
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}),
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),
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is_async: false,
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is_unstable: false,
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is_v8: false,
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argc: 1usize,
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}
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}
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#[inline]
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#[allow(clippy::too_many_arguments)]
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fn call(string: &str) -> u32 {
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string.len() as u32
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}
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pub fn v8_func<'scope>(
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scope: &mut deno_core::v8::HandleScope<'scope>,
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args: deno_core::v8::FunctionCallbackArguments,
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mut rv: deno_core::v8::ReturnValue,
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) {
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let ctx = unsafe {
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&*(deno_core::v8::Local::<deno_core::v8::External>::cast(args.data()).value()
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as *const deno_core::_ops::OpCtx)
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};
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let arg_0 = match deno_core::v8::Local::<
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deno_core::v8::String,
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>::try_from(args.get(0usize as i32)) {
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Ok(v8_string) => deno_core::serde_v8::to_utf8(v8_string, scope),
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Err(_) => {
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return deno_core::_ops::throw_type_error(
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scope,
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format!("Expected string at position {}", 0usize),
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);
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}
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};
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let arg_0 = arg_0.as_ref();
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let result = Self::call(arg_0);
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let op_state = ::std::cell::RefCell::borrow(&*ctx.state);
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op_state.tracker.track_sync(ctx.id);
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match deno_core::serde_v8::to_v8(scope, result) {
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Ok(ret) => rv.set(ret),
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Err(err) => {
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deno_core::_ops::throw_type_error(
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scope,
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format!(
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"Error serializing return: {}",
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deno_core::anyhow::Error::from(err)
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),
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)
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}
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};
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}
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}
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struct op_string_length_fast {
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_phantom: ::std::marker::PhantomData<()>,
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}
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impl<'scope> deno_core::v8::fast_api::FastFunction for op_string_length_fast {
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fn function(&self) -> *const ::std::ffi::c_void {
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op_string_length_fast_fn as *const ::std::ffi::c_void
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}
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fn args(&self) -> &'static [deno_core::v8::fast_api::Type] {
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use deno_core::v8::fast_api::Type::*;
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use deno_core::v8::fast_api::CType;
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&[V8Value, SeqOneByteString]
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}
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fn return_type(&self) -> deno_core::v8::fast_api::CType {
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deno_core::v8::fast_api::CType::Uint32
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}
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}
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fn op_string_length_fast_fn<'scope>(
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_: deno_core::v8::Local<deno_core::v8::Object>,
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string: *const deno_core::v8::fast_api::FastApiOneByteString,
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) -> u32 {
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use deno_core::v8;
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use deno_core::_ops;
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let string = unsafe { &*string }.as_str();
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let result = op_string_length::call(string);
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result
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}
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