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tomgcotomgco
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Implement examples for node 4.x.
1 parent 6a51626 commit 4d6f2ec

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lines changed

‎1_hello_world/a.js

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'use strict';
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let a = () => 'nom';
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let b = function () {};
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// a.prototype.x = () => {};
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b.prototype.x = () => {};
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a.bind(a)('hello');

‎1_hello_world/node_4.x/binding.gyp

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{
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"targets": [
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{
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"target_name": "hello",
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"sources": [ "hello.cc" ]
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}
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]
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}

‎1_hello_world/node_4.x/hello.cc

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#include <node.h>
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#include <v8.h>
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using namespace v8;
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void Method(const v8::FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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args.GetReturnValue().Set(String::NewFromUtf8(isolate, "world"));
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}
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void Init(Handle<Object> exports) {
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Isolate* isolate = exports->GetIsolate();
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exports->Set(String::NewFromUtf8(isolate, "hello"),
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FunctionTemplate::New(isolate, Method)->GetFunction());
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}
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NODE_MODULE(hello, Init)

‎1_hello_world/node_4.x/hello.js

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var addon = require('bindings')('hello');
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console.log(addon.hello()); // 'world'

‎1_hello_world/node_4.x/package.json

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{
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"name": "hello_world",
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"version": "0.0.0",
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"description": "Node.js Addons Example #1",
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"main": "hello.js",
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"private": true,
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"scripts": {
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"test": "node hello.js"
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},
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"gypfile": true,
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"dependencies": {
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"bindings": "~1.2.1"
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}
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}

‎2_function_arguments/node_4.x/addon.cc

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#include <node.h>
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using namespace v8;
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void Add(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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if (args.Length() < 2) {
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isolate->ThrowException(Exception::TypeError(
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String::NewFromUtf8(isolate, "Wrong number of arguments")));
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return;
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}
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if (!args[0]->IsNumber() || !args[1]->IsNumber()) {
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isolate->ThrowException(Exception::TypeError(
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String::NewFromUtf8(isolate, "Wrong arguments")));
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return;
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}
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double value = args[0]->NumberValue() + args[1]->NumberValue();
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Local<Number> num = Number::New(isolate, value);
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args.GetReturnValue().Set(num);
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}
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void Init(Handle<Object> exports) {
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NODE_SET_METHOD(exports, "add", Add);
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}
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NODE_MODULE(addon, Init)

‎2_function_arguments/node_4.x/addon.js

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var addon = require('bindings')('addon.node')
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console.log('This should be eight:', addon.add(3, 5))

‎2_function_arguments/node_4.x/binding.gyp

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{
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"targets": [
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{
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"target_name": "addon",
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"sources": [ "addon.cc" ]
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}
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]
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}

‎2_function_arguments/node_4.x/package.json

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{
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"name": "function_arguments",
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"version": "0.0.0",
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"description": "Node.js Addons Example #2",
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"main": "addon.js",
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"private": true,
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"dependencies": {
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"bindings": "~1.2.1",
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"nan": "~1.3.0"
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},
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"scripts": {
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"test": "node addon.js"
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},
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"gypfile": true
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}

‎3_callbacks/node_4.x/addon.cc

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#include <node.h>
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using namespace v8;
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void RunCallback(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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if (!args[0]->IsFunction()) {
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return args.GetReturnValue().SetUndefined();
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}
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Local<Function> cb = Local<Function>::Cast(args[0]);
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const unsigned argc = 1;
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Local<Value> argv[argc] = { String::NewFromUtf8(isolate, "hello, world") };
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cb->Call(Null(isolate), argc, argv);
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}
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void Init(Handle<Object> exports, Handle<Object> module) {
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NODE_SET_METHOD(module, "exports", RunCallback);
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}
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NODE_MODULE(addon, Init)

‎3_callbacks/node_4.x/addon.js

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var addon = require('bindings')('addon');
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addon(function(msg){
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console.log(msg); // 'hello world'
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});
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addon(); // nothing

‎3_callbacks/node_4.x/binding.gyp

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{
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"targets": [
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{
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"target_name": "addon",
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"sources": [ "addon.cc" ]
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}
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]
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}

‎3_callbacks/node_4.x/package.json

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{
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"name": "callbacks",
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"version": "0.0.0",
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"description": "Node.js Addons Example #3",
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"main": "addon.js",
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"private": true,
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"gypfile": true,
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"dependencies": {
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"bindings": "~1.2.1"
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}
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}

‎4_object_factory/node_4.x/addon.cc

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#include <node.h>
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using namespace v8;
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void CreateObject(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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if (!args[0]->IsString()) {
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isolate->ThrowException(Exception::TypeError(
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String::NewFromUtf8(isolate, "Argument must be a string"))
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);
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return;
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}
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Local<Object> obj = Object::New(isolate);
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obj->Set(String::NewFromUtf8(isolate, "msg"), args[0]->ToString());
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args.GetReturnValue().Set(obj);
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}
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void Init(Handle<Object> exports, Handle<Object> module) {
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NODE_SET_METHOD(module, "exports", CreateObject);
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}
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NODE_MODULE(addon, Init)

‎4_object_factory/node_4.x/addon.js

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var addon = require('bindings')('addon');
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var obj1 = addon('hello');
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var obj2 = addon('world');
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console.log(obj1.msg + ', ' + obj2.msg); // 'hello, world'

‎4_object_factory/node_4.x/binding.gyp

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{
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"targets": [
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{
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"target_name": "addon",
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"sources": [ "addon.cc" ]
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}
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]
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}

‎4_object_factory/node_4.x/package.json

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{
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"name": "object_factory",
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"version": "0.0.0",
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"description": "Node.js Addons Example #4",
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"main": "addon.js",
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"private": true,
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"gypfile": true,
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"dependencies": {
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"bindings": "~1.2.1"
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}
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}

‎5_function_factory/node_4.x/addon.cc

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#include <node.h>
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using namespace v8;
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void MyFunction(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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args.GetReturnValue().Set(String::NewFromUtf8(isolate, "hello, world"));
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}
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void CreateFunction(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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Local<FunctionTemplate> tpl = FunctionTemplate::New(isolate, MyFunction);
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Local<Function> fn = tpl->GetFunction();
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// omit this to make it anonymous
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fn->SetName(String::NewFromUtf8(isolate, "theFunction"));
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args.GetReturnValue().Set(fn);
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}
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void Init(Handle<Object> exports, Handle<Object> module) {
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NODE_SET_METHOD(module, "exports", CreateFunction);
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}
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NODE_MODULE(addon, Init)

‎5_function_factory/node_4.x/addon.js

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var addon = require('bindings')('addon');
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var fn = addon();
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console.log(fn()); // 'hello world'

‎5_function_factory/node_4.x/binding.gyp

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{
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"targets": [
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{
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"target_name": "addon",
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"sources": [ "addon.cc" ]
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}
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]
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}

‎5_function_factory/node_4.x/package.json

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{
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"name": "function_factory",
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"version": "0.0.0",
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"description": "Node.js Addons Example #5",
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"main": "addon.js",
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"private": true,
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"gypfile": true,
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"dependencies": {
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"bindings": "~1.2.1"
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}
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}

‎6_object_wrap/node_4.x/addon.cc

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#include <node.h>
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#include "myobject.h"
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using namespace v8;
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void InitAll(Handle<Object> exports) {
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MyObject::Init(exports);
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}
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NODE_MODULE(addon, InitAll)

‎6_object_wrap/node_4.x/addon.js

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var addon = require('bindings')('addon');
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var obj = new addon.MyObject(10);
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console.log( obj.plusOne() ); // 11
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console.log( obj.plusOne() ); // 12
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console.log( obj.plusOne() ); // 13

‎6_object_wrap/node_4.x/binding.gyp

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{
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"targets": [
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{
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"target_name": "addon",
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"sources": [ "addon.cc", "myobject.cc" ]
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}
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]
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}

‎6_object_wrap/node_4.x/myobject.cc

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#include "myobject.h"
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using namespace v8;
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Persistent<Function> MyObject::constructor;
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MyObject::MyObject(double value) : value_(value) {
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}
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MyObject::~MyObject() {
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}
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void MyObject::Init(Handle<Object> exports) {
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Isolate* isolate = exports->GetIsolate();
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// Prepare constructor template
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Local<FunctionTemplate> tpl = FunctionTemplate::New(isolate, New);
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tpl->SetClassName(String::NewFromUtf8(isolate, "MyObject"));
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tpl->InstanceTemplate()->SetInternalFieldCount(1);
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// Prototype
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NODE_SET_PROTOTYPE_METHOD(tpl, "plusOne", PlusOne);
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constructor.Reset(isolate, tpl->GetFunction());
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exports->Set(String::NewFromUtf8(isolate, "MyObject"),
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tpl->GetFunction());
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}
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void MyObject::New(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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if (args.IsConstructCall()) {
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// Invoked as constructor: `new MyObject(...)`
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double value = args[0]->IsUndefined() ? 0 : args[0]->NumberValue();
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MyObject* obj = new MyObject(value);
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obj->Wrap(args.This());
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args.GetReturnValue().Set(args.This());
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} else {
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// Invoked as plain function `MyObject(...)`, turn into construct call.
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const int argc = 1;
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Local<Value> argv[argc] = { args[0] };
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Local<Function> cons = Local<Function>::New(isolate, constructor);
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args.GetReturnValue().Set(cons->NewInstance(argc, argv));
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}
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}
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void MyObject::GetValue(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.Holder());
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args.GetReturnValue().Set(Number::New(isolate, obj->value_));
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}
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void MyObject::PlusOne(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.Holder());
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obj->value_ += 1;
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args.GetReturnValue().Set(Number::New(isolate, obj->value_));
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}
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void MyObject::Multiply(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.Holder());
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double multiple = args[0]->IsUndefined() ? 1 : args[0]->NumberValue();
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const int argc = 1;
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Local<Value> argv[argc] = { Number::New(isolate, obj->value_ * multiple) };
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Local<Function> cons = Local<Function>::New(isolate, constructor);
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args.GetReturnValue().Set(cons->NewInstance(argc, argv));
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}

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