1/*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <cstddef>
17
18#include "napi/native_api.h"
19#include "napi/native_node_api.h"
20
21extern const char _binary_calc_js_start[];
22extern const char _binary_calc_js_end[];
23
24/*
25 * Sync callback
26 */
27static napi_value Add(napi_env env, napi_callback_info info)
28{
29    size_t requireArgc = 2;
30    size_t argc = 2;
31    napi_value args[2] = { nullptr };
32    NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, nullptr, nullptr));
33
34    NAPI_ASSERT(env, argc >= requireArgc, "Wrong number of arguments");
35
36    napi_valuetype valuetype0;
37    NAPI_CALL(env, napi_typeof(env, args[0], &valuetype0));
38
39    napi_valuetype valuetype1;
40    NAPI_CALL(env, napi_typeof(env, args[1], &valuetype1));
41
42    NAPI_ASSERT(env, valuetype0 == napi_number && valuetype1 == napi_number, "Wrong argument type. Numbers expected.");
43
44    double value0;
45    NAPI_CALL(env, napi_get_value_double(env, args[0], &value0));
46
47    double value1;
48    NAPI_CALL(env, napi_get_value_double(env, args[1], &value1));
49
50    napi_value sum;
51    NAPI_CALL(env, napi_create_double(env, value0 + value1, &sum));
52
53    return sum;
54}
55
56/*
57 * function for module exports
58 */
59static napi_value Init(napi_env env, napi_value exports)
60{
61    /*
62     * Properties define
63     */
64    napi_property_descriptor desc[] = {
65        DECLARE_NAPI_FUNCTION("add", Add),
66    };
67    NAPI_CALL(env, napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc));
68    return exports;
69}
70
71extern "C" __attribute__((visibility("default"))) void NAPI_calc_GetJSCode(const char** buf, int* bufLen)
72{
73    if (buf != nullptr) {
74        *buf = _binary_calc_js_start;
75    }
76
77    if (bufLen != nullptr) {
78        *bufLen = _binary_calc_js_end - _binary_calc_js_start;
79    }
80}
81
82/*
83 * Module define
84 */
85static napi_module calcModule = {
86    .nm_version = 1,
87    .nm_flags = 0,
88    .nm_filename = nullptr,
89    .nm_register_func = Init,
90    .nm_modname = "calc",
91    .nm_priv = ((void*)0),
92    .reserved = { 0 },
93};
94/*
95 * Module register function
96 */
97extern "C" __attribute__((constructor)) void CalcRegisterModule(void)
98{
99    napi_module_register(&calcModule);
100}
101