1 // Copyright 2015 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <stdio.h>
6 #include <stdlib.h>
7 #include <string.h>
8
9 #include "include/libplatform/libplatform.h"
10 #include "include/v8.h"
11
12 using namespace v8;
13
14 class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
15 public:
Allocate(size_t length)16 virtual void* Allocate(size_t length) {
17 void* data = AllocateUninitialized(length);
18 return data == NULL ? data : memset(data, 0, length);
19 }
AllocateUninitialized(size_t length)20 virtual void* AllocateUninitialized(size_t length) { return malloc(length); }
Free(void * data,size_t)21 virtual void Free(void* data, size_t) { free(data); }
22 };
23
24
main(int argc,char * argv[])25 int main(int argc, char* argv[]) {
26 // Initialize V8.
27 V8::InitializeICU();
28 V8::InitializeExternalStartupData(argv[0]);
29 Platform* platform = platform::CreateDefaultPlatform();
30 V8::InitializePlatform(platform);
31 V8::Initialize();
32
33 // Create a new Isolate and make it the current one.
34 ArrayBufferAllocator allocator;
35 Isolate::CreateParams create_params;
36 create_params.array_buffer_allocator = &allocator;
37 Isolate* isolate = Isolate::New(create_params);
38 {
39 Isolate::Scope isolate_scope(isolate);
40
41 // Create a stack-allocated handle scope.
42 HandleScope handle_scope(isolate);
43
44 // Create a new context.
45 Local<Context> context = Context::New(isolate);
46
47 // Enter the context for compiling and running the hello world script.
48 Context::Scope context_scope(context);
49
50 // Create a string containing the JavaScript source code.
51 Local<String> source =
52 String::NewFromUtf8(isolate, "'Hello' + ', World!'",
53 NewStringType::kNormal).ToLocalChecked();
54
55 // Compile the source code.
56 Local<Script> script = Script::Compile(context, source).ToLocalChecked();
57
58 // Run the script to get the result.
59 Local<Value> result = script->Run(context).ToLocalChecked();
60
61 // Convert the result to an UTF8 string and print it.
62 String::Utf8Value utf8(result);
63 printf("%s\n", *utf8);
64 }
65
66 // Dispose the isolate and tear down V8.
67 isolate->Dispose();
68 V8::Dispose();
69 V8::ShutdownPlatform();
70 delete platform;
71 return 0;
72 }
73