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
|
#include <js_native_api.h>
#include "../common.h"
#include "../entry_point.h"
napi_deferred deferred = NULL;
static napi_value createPromise(napi_env env, napi_callback_info info) {
napi_value promise;
// We do not overwrite an existing deferred.
if (deferred != NULL) {
return NULL;
}
NODE_API_CALL(env, napi_create_promise(env, &deferred, &promise));
return promise;
}
static napi_value
concludeCurrentPromise(napi_env env, napi_callback_info info) {
napi_value argv[2];
size_t argc = 2;
bool resolution;
NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, argv, NULL, NULL));
NODE_API_CALL(env, napi_get_value_bool(env, argv[1], &resolution));
if (resolution) {
NODE_API_CALL(env, napi_resolve_deferred(env, deferred, argv[0]));
} else {
NODE_API_CALL(env, napi_reject_deferred(env, deferred, argv[0]));
}
deferred = NULL;
return NULL;
}
static napi_value isPromise(napi_env env, napi_callback_info info) {
napi_value promise, result;
size_t argc = 1;
bool is_promise;
NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, &promise, NULL, NULL));
NODE_API_CALL(env, napi_is_promise(env, promise, &is_promise));
NODE_API_CALL(env, napi_get_boolean(env, is_promise, &result));
return result;
}
EXTERN_C_START
napi_value Init(napi_env env, napi_value exports) {
napi_property_descriptor descriptors[] = {
DECLARE_NODE_API_PROPERTY("createPromise", createPromise),
DECLARE_NODE_API_PROPERTY("concludeCurrentPromise", concludeCurrentPromise),
DECLARE_NODE_API_PROPERTY("isPromise", isPromise),
};
NODE_API_CALL(env, napi_define_properties(
env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
return exports;
}
EXTERN_C_END
|
