1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use napi_sys::Status::napi_ok;use napi_sys::ValueType::napi_number;use napi_sys::*;use std::os::raw::{c_char, c_void};use std::ptr;
pub struct NapiObject {  counter: i32,  _wrapper: napi_ref,}
impl NapiObject {  #[allow(clippy::new_ret_no_self)]  pub extern "C" fn new(env: napi_env, info: napi_callback_info) -> napi_value {    let mut new_target: napi_value = ptr::null_mut();    assert!(      unsafe { napi_get_new_target(env, info, &mut new_target) } == napi_ok    );    let is_constructor = !new_target.is_null();
    let (args, argc, this) = crate::get_callback_info!(env, info, 1);    assert_eq!(argc, 1);
    if is_constructor {      let mut value = 0;
      let mut ty = -1;      assert!(unsafe { napi_typeof(env, args[0], &mut ty) } == napi_ok);      assert_eq!(ty, napi_number);
      assert!(        unsafe { napi_get_value_int32(env, args[0], &mut value) } == napi_ok      );
      let mut wrapper: napi_ref = ptr::null_mut();      let obj = Box::new(Self {        counter: value,        _wrapper: wrapper,      });      assert!(        unsafe {          napi_wrap(            env,            this,            Box::into_raw(obj) as *mut c_void,            None,            ptr::null_mut(),            &mut wrapper,          )        } == napi_ok      );
      return this;    }
    unreachable!();  }
  pub extern "C" fn set_value(    env: napi_env,    info: napi_callback_info,  ) -> napi_value {    let (args, argc, this) = crate::get_callback_info!(env, info, 1);    assert_eq!(argc, 1);    let mut obj: *mut Self = ptr::null_mut();    assert!(      unsafe { napi_unwrap(env, this, &mut obj as *mut _ as *mut *mut c_void) }        == napi_ok    );
    assert!(      unsafe { napi_get_value_int32(env, args[0], &mut (*obj).counter) }        == napi_ok    );
    ptr::null_mut()  }
  pub extern "C" fn get_value(    env: napi_env,    info: napi_callback_info,  ) -> napi_value {    let (_args, argc, this) = crate::get_callback_info!(env, info, 0);    assert_eq!(argc, 0);    let mut obj: *mut Self = ptr::null_mut();    assert!(      unsafe { napi_unwrap(env, this, &mut obj as *mut _ as *mut *mut c_void) }        == napi_ok    );
    let mut num: napi_value = ptr::null_mut();    assert!(      unsafe { napi_create_int32(env, (*obj).counter, &mut num) } == napi_ok    );
    num  }
  pub extern "C" fn increment(    env: napi_env,    info: napi_callback_info,  ) -> napi_value {    let (_args, argc, this) = crate::get_callback_info!(env, info, 0);    assert_eq!(argc, 0);    let mut obj: *mut Self = ptr::null_mut();    assert!(      unsafe { napi_unwrap(env, this, &mut obj as *mut _ as *mut *mut c_void) }        == napi_ok    );
    unsafe {      (*obj).counter += 1;    }
    ptr::null_mut()  }}
pub fn init(env: napi_env, exports: napi_value) {  let properties = &[    crate::new_property!(env, "set_value\0", NapiObject::set_value),    crate::new_property!(env, "get_value\0", NapiObject::get_value),    crate::new_property!(env, "increment\0", NapiObject::increment),  ];
  let mut cons: napi_value = ptr::null_mut();  assert!(    unsafe {      napi_define_class(        env,        "NapiObject\0".as_ptr() as *mut c_char,        usize::MAX,        Some(NapiObject::new),        ptr::null_mut(),        properties.len(),        properties.as_ptr(),        &mut cons,      )    } == napi_ok  );
  assert!(    unsafe {      napi_set_named_property(        env,        exports,        "NapiObject\0".as_ptr() as *const c_char,        cons,      )    } == napi_ok  );}