mirror of https://github.com/nodejs/node.git
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
#include <js_native_api.h>
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#include "../common.h"
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napi_deferred deferred = NULL;
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static napi_value createPromise(napi_env env, napi_callback_info info) {
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napi_value promise;
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// We do not overwrite an existing deferred.
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if (deferred != NULL) {
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return NULL;
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}
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NAPI_CALL(env, napi_create_promise(env, &deferred, &promise));
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return promise;
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}
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static napi_value
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concludeCurrentPromise(napi_env env, napi_callback_info info) {
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napi_value argv[2];
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size_t argc = 2;
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bool resolution;
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NAPI_CALL(env, napi_get_cb_info(env, info, &argc, argv, NULL, NULL));
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NAPI_CALL(env, napi_get_value_bool(env, argv[1], &resolution));
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if (resolution) {
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NAPI_CALL(env, napi_resolve_deferred(env, deferred, argv[0]));
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} else {
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NAPI_CALL(env, napi_reject_deferred(env, deferred, argv[0]));
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}
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deferred = NULL;
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return NULL;
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}
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static napi_value isPromise(napi_env env, napi_callback_info info) {
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napi_value promise, result;
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size_t argc = 1;
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bool is_promise;
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NAPI_CALL(env, napi_get_cb_info(env, info, &argc, &promise, NULL, NULL));
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NAPI_CALL(env, napi_is_promise(env, promise, &is_promise));
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NAPI_CALL(env, napi_get_boolean(env, is_promise, &result));
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return result;
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}
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EXTERN_C_START
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napi_value Init(napi_env env, napi_value exports) {
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napi_property_descriptor descriptors[] = {
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DECLARE_NAPI_PROPERTY("createPromise", createPromise),
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DECLARE_NAPI_PROPERTY("concludeCurrentPromise", concludeCurrentPromise),
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DECLARE_NAPI_PROPERTY("isPromise", isPromise),
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};
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NAPI_CALL(env, napi_define_properties(
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env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
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return exports;
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}
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EXTERN_C_END
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