增加 V8

Author: programthink

libs/cpp.wiki

@@ -3660,6 +3660,72 @@ Cython 提供了一种机制（编译器）编译 Python 代码为【原生代
 
 另外，它也提供了把 C/C++ 代码编译为 Python 模块的机制。
 
+=== 17.2.2 整合 JavaScript 语言 ===
+
+<h4>V8</h4>
+
+Home：[https://github.com/v8/v8]
+
+Links：[https://en.wikipedia.org/wiki/Chrome_V8 Wikipedia]
+
+这就是大名鼎鼎的 V8 引擎，Google 公司开发，C++ 编写，被用于 Chrome 浏览器。
+
+既然用于 Chrome 浏览器，显然【完整地】支持了 JS 语言的规范（ECMA-262）。
+
+它既可以独立运行，也可以嵌入到 C++ 程序中。
+
+代码示例——Hello world
+<source lang="cpp">
+&#35;include <stdio.h>
+&#35;include <stdlib.h>
+&#35;include <string.h>
+&#35;include <libplatform/libplatform.h>
+&#35;include <v8.h>
+
+int main(int argc, char* argv[])
+{
+    // Initialize V8.
+    v8::V8::InitializeICUDefaultLocation(argv[0]);
+    v8::V8::InitializeExternalStartupData(argv[0]);
+    std::unique_ptr<v8::Platform> platform = v8::platform::NewDefaultPlatform();
+    v8::V8::InitializePlatform(platform.get());
+    v8::V8::Initialize();
+
+    // Create a new Isolate and make it the current one.
+    v8::Isolate::CreateParams create_params;
+    create_params.array_buffer_allocator = v8::ArrayBuffer::Allocator::NewDefaultAllocator();
+    v8::Isolate* isolate = v8::Isolate::New(create_params);
+
+    {
+        v8::Isolate::Scope isolate_scope(isolate);
+        // Create a stack-allocated handle scope.
+        v8::HandleScope handle_scope(isolate);
+        // Create a new context.
+        v8::Local<v8::Context> context = v8::Context::New(isolate);
+        // Enter the context for compiling and running the hello world script.
+        v8::Context::Scope context_scope(context);
+        // Create a string containing the JavaScript source code.
+        v8::Local<v8::String> source =
+        v8::String::NewFromUtf8(isolate, "'Hello World!'",
+                                v8::NewStringType::kNormal).ToLocalChecked();
+        // Compile the source code.
+        v8::Local<v8::Script> script = v8::Script::Compile(context, source).ToLocalChecked();
+        // Run the script to get the result.
+        v8::Local<v8::Value> result = script->Run(context).ToLocalChecked();
+        // Convert the result to an UTF8 string and print it.
+        v8::String::Utf8Value utf8(isolate, result);
+        printf("%s\n", *utf8);
+    }
+
+    // Dispose the isolate and tear down V8.
+    isolate->Dispose();
+    v8::V8::Dispose();
+    v8::V8::ShutdownPlatform();
+    delete create_params.array_buffer_allocator;
+    return 0;
+}
+</source>
+
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 = 18 （其它） =