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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use std::ffi::c_void;
use crate::error::value_to_type_str;
use super::transl8::impl_magic;
use super::transl8::FromV8;
use super::transl8::ToV8;
pub struct ExternalPointer(*mut c_void);
// SAFETY: Nonblocking FFI is user controller and we must trust user to have it right.
unsafe impl Send for ExternalPointer {}
// SAFETY: Nonblocking FFI is user controller and we must trust user to have it right.
unsafe impl Sync for ExternalPointer {}
impl_magic!(ExternalPointer);
impl ToV8 for ExternalPointer {
fn to_v8<'a>(
&mut self,
scope: &mut v8::HandleScope<'a>,
) -> Result<v8::Local<'a, v8::Value>, crate::Error> {
if self.0.is_null() {
Ok(v8::null(scope).into())
} else {
Ok(v8::External::new(scope, self.0).into())
}
}
}
impl FromV8 for ExternalPointer {
fn from_v8(
_scope: &mut v8::HandleScope,
value: v8::Local<v8::Value>,
) -> Result<Self, crate::Error> {
if value.is_null() {
Ok(ExternalPointer(std::ptr::null_mut()))
} else if let Ok(external) = v8::Local::<v8::External>::try_from(value) {
Ok(ExternalPointer(external.value()))
} else {
Err(crate::Error::ExpectedExternal(value_to_type_str(value)))
}
}
}
impl From<*mut c_void> for ExternalPointer {
fn from(value: *mut c_void) -> Self {
ExternalPointer(value)
}
}
impl From<*const c_void> for ExternalPointer {
fn from(value: *const c_void) -> Self {
ExternalPointer(value as *mut c_void)
}
}
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