node 调用c++方法解析共用体

最新推荐文章于 2025-03-31 16:35:42 发布

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最新推荐文章于 2025-03-31 16:35:42 发布 · 816 阅读

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本文介绍了如何在Node.js环境中通过C++模块调用C++代码来解析共用体类型。主要涉及三个关键文件：package.json, democpp_v8.cc和binding.gyp。通过执行特定命令，可以将C++编译为Node.js可使用的模块，从而实现跨语言的数据交互。" 113967519,10543473,Python3+Flask实战：从基础到RESTful API,"['Python', 'Web开发', 'Flask框架', 'RESTful API', 'Web框架']

// addon.cc
#include <node.h>



namespace demo {
using v8::Exception;
using v8::FunctionCallbackInfo;
using v8::Isolate;
using v8::Local;
using v8::Number;
using v8::Object;
using v8::String;
using v8::Value;

union data 
{
 float a;
 unsigned char b[4];
 long longval;
};




// This is the implementation of the "add" method// Input arguments are passed using the// const FunctionCallbackInfo<Value>& args struct
void Add(const FunctionCallbackInfo<Value>& args) {
  Isolate* isolate = args.GetIsolate();
  // Check the number of arguments passed.
  if (args.Length() < 2) {
    // Throw an Error that is passed back to JavaScript
    isolate->ThrowException(Exception::TypeError(
        String::NewFromUtf8(isolate, "Wrong number of arguments")));
    return;
  }
  // Check the argument types
  if (!args[0]->IsNumber() || !args[1]->IsNumber()) {
    isolate->ThrowException(Exception::TypeError(
        String::NewFromUtf8(isolate, "Wrong a