/* * QuickJS: Example of C module *  * Copyright (c) 2017-2018 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */#include "../quickjs.h" #define countof(x) (sizeof(x) / sizeof((x)[0])) static int fib(int n){    if (n <= 0)        return 0;    else if (n == 1)        return 1;    else        return fib(n - 1) + fib(n - 2);} static JSValue js_fib(JSContext *ctx, JSValueConst this_val,                      int argc, JSValueConst *argv){    int n, res;    if (JS_ToInt32(ctx, &n, argv[0]))        return JS_EXCEPTION;    res = fib(n);    return JS_NewInt32(ctx, res);} static const JSCFunctionListEntry js_fib_funcs[] = {    JS_CFUNC_DEF("fib", 1, js_fib ),}; static int js_fib_init(JSContext *ctx, JSModuleDef *m){    return JS_SetModuleExportList(ctx, m, js_fib_funcs,                                  countof(js_fib_funcs));} #ifdef JS_SHARED_LIBRARY#define JS_INIT_MODULE js_init_module#else#define JS_INIT_MODULE js_init_module_fib#endif JSModuleDef *JS_INIT_MODULE(JSContext *ctx, const char *module_name){    JSModuleDef *m;    m = JS_NewCModule(ctx, module_name, js_fib_init);    if (!m)        return NULL;    JS_AddModuleExportList(ctx, m, js_fib_funcs, countof(js_fib_funcs));    return m;}