c++编写node的addon(4) --callback

1.环境

Ubuntu 14.04

node 4.5.0

node-gyp 3.4.0

2.项目

新建项目，加入组件nan和bindings

方法一、在项目文件的node_modules中复制组件nan和bindings的全部代码包;

方法二、在package.json的dependencies中加入这两个组件，用nmp安装

3.c++源码

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

void RunCallback(const Nan::FunctionCallbackInfo<v8::Value>& info) {
	v8::Local<v8::Function> cb = info[0].As<v8::Function>();
	const unsigned argc = 1;
	v8::Local<v8::Value> argv[argc] = {Nan::New("hello world").ToLocalChecked()};
	Nan::MakeCallback(Nan::GetCurrentContext()->Global(), cb, argc, argv);
}

void Init(v8::Local<v8::Object> exports, v8::Local<v8::Object> module) {
	Nan::SetMethod(module, "exports", RunCallback);
}

NODE_MODULE(addon, Init)

4.binding.gyp

{
	"targets": [
		{
			"target_name":"addon",
			"sources":["addon.cc"],
			"include_dirs":[
				"<!(node -e \"require('nan')\")"
			]
		}
	]
}

5.js源码

var addon = require('bindings')('addon');

addon(function(msg){
	console.log(msg[0]);
	console.log(msg[1]);
});

6.编译addon

cd到源码目录下

node-gyp configure build   

7.执行

cd 到源码目录下

node hello.js