ObjectFactory *factory = vm->GetFactory(); JSHandle<JSArrayBuffer> arrayBuffer = JSHandle<JSArrayBuffer>::Cast(factory->NewJSArrayBuffer(length)); JSHandle<GlobalEnv> env = vm->GetGlobalEnv(); JSThread *thread = vm->GetJSThread(); JSHandle<JSFunction> current(factory->NewJSFunction(env, reinterpret_cast<void *>(BufferToStringCallback))); JSHandle<JSTaggedValue> ArrayBuffer(arrayBuffer); JSHandle<JSTaggedValue> undefined = thread->GlobalConstants()->GetHandledUndefined(); EcmaRuntimeCallInfo *info = ecmascript::EcmaInterpreter::NewRuntimeCallInfo(thread, undefined, ArrayBuffer, undefined, 1); info->SetCallArg(0, current.GetTaggedValue()); info->SetCallArg(1, arrayBuffer.GetTaggedValue()); Local<StringRef> key = StringRef::NewFromUtf8(vm, "toString"); JSHandle<JSTaggedValue> keyValue = JSNApiHelper::ToJSHandle(key); JSHandle<JSTaggedValue> currentTaggedValue(current); JSHandle<JSTaggedValue> obj(arrayBuffer); bool result = JSTaggedValue::SetProperty(vm->GetJSThread(), obj, keyValue, currentTaggedValue);修复这段代码
时间: 2024-03-23 07:39:55 浏览: 97
ITIS-JAVA-SPRING-2015:ITIS-Java-SPRING-2015
这段代码中存在一些问题,需要修复。修复后的代码如下:
```
// 获取 ObjectFactory 实例
ObjectFactory *factory = vm->GetFactory();
// 创建 JSArrayBuffer 对象
JSHandle<JSArrayBuffer> arrayBuffer = JSHandle<JSArrayBuffer>::Cast(factory->NewJSArrayBuffer(length));
// 获取 GlobalEnv 实例和 JSThread 实例
JSHandle<GlobalEnv> env = vm->GetGlobalEnv();
JSThread *thread = env->GetJSThread();
// 创建 JSFunction 对象
JSHandle<JSFunction> current(factory->NewJSFunction(env, reinterpret_cast<void *>(BufferToStringCallback)));
// 获取 JSArrayBuffer 对象和 undefined 对象的句柄
JSHandle<JSTaggedValue> arrayBufferHandle(arrayBuffer);
JSHandle<JSTaggedValue> undefined(thread->GetEcmaVM()->GetGlobalConstants()->GetHandledUndefined());
// 创建 EcmaRuntimeCallInfo 对象并设置参数
EcmaRuntimeCallInfo *info = ecmascript::EcmaInterpreter::NewRuntimeCallInfo(thread, undefined, arrayBufferHandle, undefined, 2);
info->SetFunction(current.GetTaggedValue());
info->SetCallArg(0, arrayBufferHandle.GetTaggedValue());
// 调用 SetProperty 函数将 toString 方法添加到 JSArrayBuffer 对象上
Local<StringRef> key = Local<StringRef>::Cast(factory->NewFromCanBeCompressString("toString"));
JSHandle<JSTaggedValue> keyValue = JSHandle<JSTaggedValue>::Cast(key);
JSHandle<JSTaggedValue> currentTaggedValue(current);
JSHandle<JSTaggedValue> obj(arrayBufferHandle);
bool result = JSTaggedValue::SetProperty(thread, obj, keyValue, currentTaggedValue);
```
修复后的代码主要做了以下几件事情:
1. 修复了获取 GlobalEnv 实例和 JSThread 实例的方法,使用了 GetJSThread() 方法。
2. 创建 EcmaRuntimeCallInfo 对象时,将 JSFunction 对象作为第一个参数传入,将 JSArrayBuffer 对象作为第二个参数传入。
3. 调用 SetProperty 函数添加 toString 方法时,将字符串 "toString" 转换成 Local<StringRef> 对象,并使用 Cast 方法转换成 JSHandle<JSTaggedValue> 对象。
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