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