1 #include <js_native_api.h>
2 #include "../common.h"
3
4 static bool exceptionWasPending = false;
5
returnException(napi_env env,napi_callback_info info)6 static napi_value returnException(napi_env env, napi_callback_info info) {
7 size_t argc = 1;
8 napi_value args[1];
9 NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
10
11 napi_value global;
12 NAPI_CALL(env, napi_get_global(env, &global));
13
14 napi_value result;
15 napi_status status = napi_call_function(env, global, args[0], 0, 0, &result);
16 if (status == napi_pending_exception) {
17 napi_value ex;
18 NAPI_CALL(env, napi_get_and_clear_last_exception(env, &ex));
19 return ex;
20 }
21
22 return NULL;
23 }
24
allowException(napi_env env,napi_callback_info info)25 static napi_value allowException(napi_env env, napi_callback_info info) {
26 size_t argc = 1;
27 napi_value args[1];
28 NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
29
30 napi_value global;
31 NAPI_CALL(env, napi_get_global(env, &global));
32
33 napi_value result;
34 napi_call_function(env, global, args[0], 0, 0, &result);
35 // Ignore status and check napi_is_exception_pending() instead.
36
37 NAPI_CALL(env, napi_is_exception_pending(env, &exceptionWasPending));
38 return NULL;
39 }
40
wasPending(napi_env env,napi_callback_info info)41 static napi_value wasPending(napi_env env, napi_callback_info info) {
42 napi_value result;
43 NAPI_CALL(env, napi_get_boolean(env, exceptionWasPending, &result));
44
45 return result;
46 }
47
finalizer(napi_env env,void * data,void * hint)48 static void finalizer(napi_env env, void *data, void *hint) {
49 NAPI_CALL_RETURN_VOID(env,
50 napi_throw_error(env, NULL, "Error during Finalize"));
51 }
52
createExternal(napi_env env,napi_callback_info info)53 static napi_value createExternal(napi_env env, napi_callback_info info) {
54 napi_value external;
55
56 NAPI_CALL(env,
57 napi_create_external(env, NULL, finalizer, NULL, &external));
58
59 return external;
60 }
61
62 EXTERN_C_START
Init(napi_env env,napi_value exports)63 napi_value Init(napi_env env, napi_value exports) {
64 napi_property_descriptor descriptors[] = {
65 DECLARE_NAPI_PROPERTY("returnException", returnException),
66 DECLARE_NAPI_PROPERTY("allowException", allowException),
67 DECLARE_NAPI_PROPERTY("wasPending", wasPending),
68 DECLARE_NAPI_PROPERTY("createExternal", createExternal),
69 };
70 NAPI_CALL(env, napi_define_properties(
71 env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
72
73 napi_value error, code, message;
74 NAPI_CALL(env, napi_create_string_utf8(env, "Error during Init",
75 NAPI_AUTO_LENGTH, &message));
76 NAPI_CALL(env, napi_create_string_utf8(env, "", NAPI_AUTO_LENGTH, &code));
77 NAPI_CALL(env, napi_create_error(env, code, message, &error));
78 NAPI_CALL(env, napi_set_named_property(env, error, "binding", exports));
79 NAPI_CALL(env, napi_throw(env, error));
80
81 return exports;
82 }
83 EXTERN_C_END
84