66 lines
1.4 KiB
Rust
66 lines
1.4 KiB
Rust
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use std::any::type_name;
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use std::ops::{Deref, DerefMut};
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use std::ptr;
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use crate::{bindgen_runtime::FromNapiValue, check_status, sys, NapiRaw};
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pub struct ClassInstance<T: 'static> {
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pub value: sys::napi_value,
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inner: &'static mut T,
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}
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impl<T: 'static> ClassInstance<T> {
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#[doc(hidden)]
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pub fn new(value: sys::napi_value, inner: &'static mut T) -> Self {
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Self { value, inner }
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}
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}
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impl<T: 'static> NapiRaw for ClassInstance<T> {
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unsafe fn raw(&self) -> sys::napi_value {
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self.value
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}
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}
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impl<T: 'static> FromNapiValue for ClassInstance<T> {
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unsafe fn from_napi_value(env: sys::napi_env, napi_val: sys::napi_value) -> crate::Result<Self> {
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let mut value = ptr::null_mut();
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check_status!(
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unsafe { sys::napi_unwrap(env, napi_val, &mut value) },
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"Unwrap value [{}] from class failed",
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type_name::<T>(),
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)?;
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let value = unsafe { Box::from_raw(value as *mut T) };
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Ok(Self {
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value: napi_val,
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inner: Box::leak(value),
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})
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}
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}
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impl<T: 'static> Deref for ClassInstance<T> {
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type Target = T;
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fn deref(&self) -> &Self::Target {
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self.inner
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}
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}
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impl<T: 'static> DerefMut for ClassInstance<T> {
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fn deref_mut(&mut self) -> &mut T {
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self.inner
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}
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}
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impl<T: 'static> AsRef<T> for ClassInstance<T> {
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fn as_ref(&self) -> &T {
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self.inner
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}
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}
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impl<T: 'static> AsMut<T> for ClassInstance<T> {
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fn as_mut(&mut self) -> &mut T {
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self.inner
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}
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}
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