napi/bindgen_runtime/js_values/
nil.rs

1use std::ptr;
2
3use crate::{bindgen_prelude::*, check_status, sys, Result, ValueType};
4
5#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Ord, PartialOrd)]
6pub struct Null;
7pub type Undefined = ();
8
9impl TypeName for Null {
10  fn type_name() -> &'static str {
11    "null"
12  }
13
14  fn value_type() -> ValueType {
15    ValueType::Null
16  }
17}
18
19impl ValidateNapiValue for Null {}
20
21impl FromNapiValue for Null {
22  unsafe fn from_napi_value(_env: sys::napi_env, _napi_val: sys::napi_value) -> Result<Self> {
23    Ok(Null)
24  }
25}
26
27impl ToNapiValue for Null {
28  unsafe fn to_napi_value(env: sys::napi_env, _val: Self) -> Result<sys::napi_value> {
29    let mut ret = ptr::null_mut();
30
31    check_status!(
32      unsafe { sys::napi_get_null(env, &mut ret) },
33      "Failed to create napi null value"
34    )?;
35
36    Ok(ret)
37  }
38}
39
40impl ToNapiValue for &Null {
41  unsafe fn to_napi_value(env: sys::napi_env, val: Self) -> Result<sys::napi_value> {
42    ToNapiValue::to_napi_value(env, *val)
43  }
44}
45
46impl ToNapiValue for &mut Null {
47  unsafe fn to_napi_value(env: sys::napi_env, val: Self) -> Result<sys::napi_value> {
48    ToNapiValue::to_napi_value(env, *val)
49  }
50}
51
52impl TypeName for Undefined {
53  fn type_name() -> &'static str {
54    "undefined"
55  }
56
57  fn value_type() -> ValueType {
58    ValueType::Undefined
59  }
60}
61
62impl ValidateNapiValue for Undefined {}
63
64impl FromNapiValue for Undefined {
65  unsafe fn from_napi_value(_env: sys::napi_env, _napi_val: sys::napi_value) -> Result<Self> {
66    Ok(())
67  }
68}
69
70impl ToNapiValue for Undefined {
71  unsafe fn to_napi_value(env: sys::napi_env, _val: Self) -> Result<sys::napi_value> {
72    let mut ret = ptr::null_mut();
73
74    check_status!(
75      unsafe { sys::napi_get_undefined(env, &mut ret) },
76      "Failed to create napi undefined value"
77    )?;
78
79    Ok(ret)
80  }
81}
82
83impl ToNapiValue for &Undefined {
84  unsafe fn to_napi_value(env: sys::napi_env, _: Self) -> Result<sys::napi_value> {
85    ToNapiValue::to_napi_value(env, ())
86  }
87}
88
89impl ToNapiValue for &mut Undefined {
90  unsafe fn to_napi_value(env: sys::napi_env, _: Self) -> Result<sys::napi_value> {
91    ToNapiValue::to_napi_value(env, ())
92  }
93}
napi/bindgen_runtime/js_values/nil.rs

napi/bindgen_runtime/js_values/
nil.rs
