40 lines
976 B
Rust
40 lines
976 B
Rust
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use std::ops::Deref;
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use std::ptr;
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use super::check_status;
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use crate::{sys, Env, NapiValue, Result};
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pub struct EscapableHandleScope<T: NapiValue> {
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handle_scope: sys::napi_escapable_handle_scope,
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value: T,
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}
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impl<T: NapiValue> EscapableHandleScope<T> {
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#[inline]
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pub fn open(env: sys::napi_env, value: T) -> Result<Self> {
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let mut handle_scope = ptr::null_mut();
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check_status(unsafe { sys::napi_open_escapable_handle_scope(env, &mut handle_scope) })?;
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let mut result = ptr::null_mut();
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check_status(unsafe {
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sys::napi_escape_handle(env, handle_scope, NapiValue::raw(&value), &mut result)
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})?;
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Ok(Self {
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value,
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handle_scope,
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})
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}
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#[must_use]
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pub fn close(self, env: Env) -> Result<()> {
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check_status(unsafe { sys::napi_close_escapable_handle_scope(env.0, self.handle_scope) })
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}
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}
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impl<T: NapiValue> Deref for EscapableHandleScope<T> {
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type Target = T;
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fn deref(&self) -> &T {
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&self.value
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}
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}
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