72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*
|
|
* 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;
|
|
}
|