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use std::ptr;
use crate::{bindgen_prelude::*, check_status, sys, type_of, Error, Result, Status, ValueType};
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Ord, PartialOrd)]
pub struct Null;
pub type Undefined = ();
impl TypeName for Null {
fn type_name() -> &'static str {
"null"
}
fn value_type() -> ValueType {
ValueType::Null
}
}
impl ValidateNapiValue for Null {}
impl FromNapiValue for Null {
unsafe fn from_napi_value(env: sys::napi_env, napi_val: sys::napi_value) -> Result<Self> {
match type_of!(env, napi_val) {
Ok(ValueType::Null) => Ok(Null),
_ => Err(Error::new(
Status::InvalidArg,
"Value is not null".to_owned(),
)),
}
}
}
impl ToNapiValue for Null {
unsafe fn to_napi_value(env: sys::napi_env, _val: Self) -> Result<sys::napi_value> {
let mut ret = ptr::null_mut();
check_status!(
unsafe { sys::napi_get_null(env, &mut ret) },
"Failed to create napi null value"
)?;
Ok(ret)
}
}
impl TypeName for Undefined {
fn type_name() -> &'static str {
"undefined"
}
fn value_type() -> ValueType {
ValueType::Undefined
}
}
impl ValidateNapiValue for Undefined {}
impl FromNapiValue for Undefined {
unsafe fn from_napi_value(env: sys::napi_env, napi_val: sys::napi_value) -> Result<Self> {
match type_of!(env, napi_val) {
Ok(ValueType::Undefined) => Ok(()),
_ => Err(Error::new(
Status::InvalidArg,
"Value is not undefined".to_owned(),
)),
}
}
}
impl ToNapiValue for Undefined {
unsafe fn to_napi_value(env: sys::napi_env, _val: Self) -> Result<sys::napi_value> {
let mut ret = ptr::null_mut();
check_status!(
unsafe { sys::napi_get_undefined(env, &mut ret) },
"Failed to create napi undefined value"
)?;
Ok(ret)
}
}