/* * QuickJS: binary JSON module (test only) *  * Copyright (c) 2017-2019 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-libc.h"#include "../cutils.h" static JSValue js_bjson_read(JSContext *ctx, JSValueConst this_val,                             int argc, JSValueConst *argv){    uint8_t *buf;    uint64_t pos, len;    JSValue obj;    size_t size;    int flags;        if (JS_ToIndex(ctx, &pos, argv[1]))        return JS_EXCEPTION;    if (JS_ToIndex(ctx, &len, argv[2]))        return JS_EXCEPTION;    buf = JS_GetArrayBuffer(ctx, &size, argv[0]);    if (!buf)        return JS_EXCEPTION;    if (pos + len > size)        return JS_ThrowRangeError(ctx, "array buffer overflow");    flags = 0;    if (JS_ToBool(ctx, argv[3]))        flags |= JS_READ_OBJ_REFERENCE;    obj = JS_ReadObject(ctx, buf + pos, len, flags);    return obj;} static JSValue js_bjson_write(JSContext *ctx, JSValueConst this_val,                              int argc, JSValueConst *argv){    size_t len;    uint8_t *buf;    JSValue array;    int flags;        flags = 0;    if (JS_ToBool(ctx, argv[1]))        flags |= JS_WRITE_OBJ_REFERENCE;    buf = JS_WriteObject(ctx, &len, argv[0], flags);    if (!buf)        return JS_EXCEPTION;    array = JS_NewArrayBufferCopy(ctx, buf, len);    js_free(ctx, buf);    return array;} static const JSCFunctionListEntry js_bjson_funcs[] = {    JS_CFUNC_DEF("read", 4, js_bjson_read ),    JS_CFUNC_DEF("write", 2, js_bjson_write ),}; static int js_bjson_init(JSContext *ctx, JSModuleDef *m){    return JS_SetModuleExportList(ctx, m, js_bjson_funcs,                                  countof(js_bjson_funcs));} #ifdef JS_SHARED_LIBRARY#define JS_INIT_MODULE js_init_module#else#define JS_INIT_MODULE js_init_module_bjson#endif JSModuleDef *JS_INIT_MODULE(JSContext *ctx, const char *module_name){    JSModuleDef *m;    m = JS_NewCModule(ctx, module_name, js_bjson_init);    if (!m)        return NULL;    JS_AddModuleExportList(ctx, m, js_bjson_funcs, countof(js_bjson_funcs));    return m;}