C++ rq函数代码示例

void CSimulation2::LoadPlayerSettings(bool newPlayers)
{
	JSContext* cx = GetScriptInterface().GetContext();
	JSAutoRequest rq(cx);
	JS::RootedValue global(cx, GetScriptInterface().GetGlobalObject());
	GetScriptInterface().CallFunctionVoid(global, "LoadPlayerSettings", m->m_MapSettings, newPlayers);
}

void CComponentTypeScript::Deserialize(const CParamNode& paramNode, IDeserializer& deserialize, entity_id_t ent)
{	
	JSContext* cx = m_ScriptInterface.GetContext();
	JSAutoRequest rq(cx);
	
	m_ScriptInterface.SetProperty(m_Instance, "entity", (int)ent, true, false);
	m_ScriptInterface.SetProperty(m_Instance, "template", paramNode, true, false);

	// Support a custom "Deserialize" function, to which we pass the deserialized data
	// instead of automatically adding the deserialized properties onto the object
	if (m_HasCustomDeserialize)
	{
		JS::RootedValue val(cx);

		// If Serialize = null, we'll still call Deserialize but with undefined argument
		if (!m_HasNullSerialize)
			deserialize.ScriptVal("object", &val);

		if (!m_ScriptInterface.CallFunctionVoid(m_Instance, "Deserialize", val))
			LOGERROR("Script Deserialize call failed");
	}
	else
	{
		if (!m_HasNullSerialize)
		{
			// Use ScriptObjectAppend so we don't lose the carefully-constructed
			// prototype/parent of this object
			deserialize.ScriptObjectAppend("object", m_Instance);
		}
	}
}

void CBinarySerializerScriptImpl::ScriptString(const char* name, JS::HandleString string)
{
	JSContext* cx = m_ScriptInterface.GetContext();
	JSAutoRequest rq(cx);

#if BYTE_ORDER != LITTLE_ENDIAN
#error TODO: probably need to convert JS strings to little-endian
#endif

	size_t length;
	JS::AutoCheckCannotGC nogc;
	// Serialize strings directly as UTF-16 or Latin1, to avoid expensive encoding conversions
	bool isLatin1 = JS_StringHasLatin1Chars(string);
	m_Serializer.Bool("isLatin1", isLatin1);
	if (isLatin1)
	{
		const JS::Latin1Char* chars = JS_GetLatin1StringCharsAndLength(cx, nogc, string, &length);
		if (!chars)
			throw PSERROR_Serialize_ScriptError("JS_GetLatin1StringCharsAndLength failed");
		m_Serializer.NumberU32_Unbounded("string length", (u32)length);
		m_Serializer.RawBytes(name, (const u8*)chars, length);
	}
	else
	{
		const char16_t* chars = JS_GetTwoByteStringCharsAndLength(cx, nogc, string, &length);

		if (!chars)
			throw PSERROR_Serialize_ScriptError("JS_GetTwoByteStringCharsAndLength failed");
		m_Serializer.NumberU32_Unbounded("string length", (u32)length);
		m_Serializer.RawBytes(name, (const u8*)chars, length*2);
	}
}

void CStdDeserializer::ScriptString(const char* name, JS::MutableHandleString out)
{
#if BYTE_ORDER != LITTLE_ENDIAN
#error TODO: probably need to convert JS strings from little-endian
#endif

	JSContext* cx = m_ScriptInterface.GetContext();
	JSAutoRequest rq(cx);

	bool isLatin1;
	Bool("isLatin1", isLatin1);
	if (isLatin1)
	{
		std::vector<JS::Latin1Char> str;
		ReadStringLatin1(name, str);

		out.set(JS_NewStringCopyN(cx, (const char*)str.data(), str.size()));
		if (!out)
			throw PSERROR_Deserialize_ScriptError("JS_NewStringCopyN failed");
	}
	else
	{
		utf16string str;
		ReadStringUTF16(name, str);

		out.set(JS_NewUCStringCopyN(cx, (const char16_t*)str.data(), str.length()));
		if (!out)
			throw PSERROR_Deserialize_ScriptError("JS_NewUCStringCopyN failed");
	}
}

void CBackupDeleter::run()
{
	if (! _ctx._options->_removeNonExistingFiles )
		return;

	LOGD("{} START", __PRETTY_FUNCTION__);
	const CAsset * pRoot( _parser.getRoot() );
	assert( pRoot );
	
	CRequest rq(_ctx._options->_curlVerbose);
	for (const auto & p : _remote.paths())
	{
		const CAsset * pLocal = pRoot->find(p);
		if (pLocal == nullptr)
		{
			rq.addHeader("X-Auth-Token", _ctx._cr.token());
			const std::string url= fmt::format("{}/{}/{}", _ctx._cr.endpoint(), _ctx._options->_dstContainer, (_ctx._options->_dstFolder / rq.escapePath(p)).string() );
			LOGI("deleting backup '{}'", url); //p.string());
			rq.del(url);
			if ( rq.getHttpResponseCode() != 204 )
			{
				LOGE("Failed to delete '{}' [http response : {}]", url, rq.getHttpResponseCode());
				_ctx.abort();
			}
		}
		
		if (_ctx.aborted())
			break;
	}

	LOGD("{} DONE", __PRETTY_FUNCTION__);
}

	virtual void PushLocalCommand(player_id_t player, JS::HandleValue cmd)
	{
		JSContext* cx = GetSimContext().GetScriptInterface().GetContext();
		JSAutoRequest rq(cx);

		m_LocalQueue.emplace_back(SimulationCommand(player, cx, cmd));
	}

bool CNetClient::OnGameStart(void* context, CFsmEvent* event)
{
	ENSURE(event->GetType() == (uint)NMT_GAME_START);

	CNetClient* client = (CNetClient*)context;
	JSContext* cx = client->GetScriptInterface().GetContext();
	JSAutoRequest rq(cx);

	// Find the player assigned to our GUID
	int player = -1;
	if (client->m_PlayerAssignments.find(client->m_GUID) != client->m_PlayerAssignments.end())
		player = client->m_PlayerAssignments[client->m_GUID].m_PlayerID;

	client->m_ClientTurnManager = new CNetClientTurnManager(
			*client->m_Game->GetSimulation2(), *client, client->m_HostID, client->m_Game->GetReplayLogger());

	client->m_Game->SetPlayerID(player);
	client->m_Game->StartGame(&client->m_GameAttributes, "");

	JS::RootedValue msg(cx);
	client->GetScriptInterface().Eval("({'type':'start'})", &msg);
	client->PushGuiMessage(msg);

	return true;
}

template<> bool ScriptInterface::FromJSVal<bool>(JSContext* cx, JS::HandleValue v, bool& out)
{
	JSAutoRequest rq(cx);
	WARN_IF_NOT(v.isBoolean(), v);
	out = JS::ToBoolean(v);
	return true;
}

bool
Sched_context::deblock(unsigned cpu, Sched_context *crs, bool lazy_q = false)
{
  assert_kdb(cpu_lock.test());

  Sched_context *cs = rq(cpu).current_sched();
  bool res = true;
  if (this == cs)
    {
      if (crs->dominates(this))
	res = false;
    }
  else
    {
      deblock_refill(cpu);

      if ((EXPECT_TRUE(cs != 0) && cs->dominates(this)) || crs->dominates(this))
	res = false;
    }

  if (res && lazy_q)
    return true;

  ready_enqueue(cpu);
  return res;
}

bool ScriptInterface::ParseJSON(const std::string& string_utf8, JS::MutableHandleValue out)
{
	JSAutoRequest rq(m->m_cx);
	std::wstring attrsW = wstring_from_utf8(string_utf8);
 	utf16string string(attrsW.begin(), attrsW.end());
	if (JS_ParseJSON(m->m_cx, reinterpret_cast<const jschar*>(string.c_str()), (u32)string.size(), out))
		return true;

	LOGERROR("JS_ParseJSON failed!");
	if (!JS_IsExceptionPending(m->m_cx))
		return false;

	JS::RootedValue exc(m->m_cx);
	if (!JS_GetPendingException(m->m_cx, &exc))
		return false;

	JS_ClearPendingException(m->m_cx);
	// We expect an object of type SyntaxError
	if (!exc.isObject())
		return false;

	JS::RootedValue rval(m->m_cx);
	JS::RootedObject excObj(m->m_cx, &exc.toObject());
	if (!JS_CallFunctionName(m->m_cx, excObj, "toString", JS::HandleValueArray::empty(), &rval))
		return false;

	std::wstring error;
	ScriptInterface::FromJSVal(m->m_cx, rval, error);
	LOGERROR("%s", utf8_from_wstring(error));
	return false;
}

ScriptInterface_impl::ScriptInterface_impl(const char* nativeScopeName, const shared_ptr<ScriptRuntime>& runtime) :
	m_runtime(runtime), m_glob(runtime->m_rt), m_nativeScope(runtime->m_rt)
{
	bool ok;

	m_cx = JS_NewContext(m_runtime->m_rt, STACK_CHUNK_SIZE);
	ENSURE(m_cx);

	JS_SetParallelIonCompilationEnabled(m_runtime->m_rt, true);

	// For GC debugging:
	// JS_SetGCZeal(m_cx, 2);

	JS_SetContextPrivate(m_cx, NULL);

	JS_SetErrorReporter(m_cx, ErrorReporter);

	JS_SetGlobalJitCompilerOption(m_runtime->m_rt, JSJITCOMPILER_ION_ENABLE, 1);
	JS_SetGlobalJitCompilerOption(m_runtime->m_rt, JSJITCOMPILER_BASELINE_ENABLE, 1);

	JS::ContextOptionsRef(m_cx).setExtraWarnings(1)
		.setWerror(0)
		.setVarObjFix(1)
		.setStrictMode(1);

	JS::CompartmentOptions opt;
	opt.setVersion(JSVERSION_LATEST);

	JSAutoRequest rq(m_cx);
	JS::RootedObject globalRootedVal(m_cx, JS_NewGlobalObject(m_cx, &global_class, NULL, JS::OnNewGlobalHookOption::FireOnNewGlobalHook, opt));
	m_comp = JS_EnterCompartment(m_cx, globalRootedVal);
	ok = JS_InitStandardClasses(m_cx, globalRootedVal);
	ENSURE(ok);
	m_glob = globalRootedVal.get();

	// Use the testing functions to globally enable gcPreserveCode. This brings quite a 
	// big performance improvement. In future SpiderMonkey versions, we should probably 
	// use the functions implemented here: https://bugzilla.mozilla.org/show_bug.cgi?id=1068697
	JS::RootedObject testingFunctionsObj(m_cx, js::GetTestingFunctions(m_cx));
	ENSURE(testingFunctionsObj);
	JS::RootedValue ret(m_cx);
	JS_CallFunctionName(m_cx, testingFunctionsObj, "gcPreserveCode", JS::HandleValueArray::empty(), &ret);

	JS_DefineProperty(m_cx, m_glob, "global", globalRootedVal, JSPROP_ENUMERATE | JSPROP_READONLY
			| JSPROP_PERMANENT);

	m_nativeScope = JS_DefineObject(m_cx, m_glob, nativeScopeName, NULL, NULL, JSPROP_ENUMERATE | JSPROP_READONLY
			| JSPROP_PERMANENT);

	JS_DefineFunction(m_cx, globalRootedVal, "print", ::print,        0, JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT);
	JS_DefineFunction(m_cx, globalRootedVal, "log",   ::logmsg,       1, JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT);
	JS_DefineFunction(m_cx, globalRootedVal, "warn",  ::warn,         1, JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT);
	JS_DefineFunction(m_cx, globalRootedVal, "error", ::error,        1, JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT);
	JS_DefineFunction(m_cx, globalRootedVal, "deepcopy", ::deepcopy,  1, JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT);

	Register("ProfileStart", ::ProfileStart, 1);
	Register("ProfileStop", ::ProfileStop, 0);

	runtime->RegisterContext(m_cx);
}

bool ScriptInterface::LoadGlobalScriptFile(const VfsPath& path)
{
	JSAutoRequest rq(m->m_cx);
	JS::RootedObject global(m->m_cx, m->m_glob);
	if (!VfsFileExists(path))
	{
		LOGERROR("File '%s' does not exist", path.string8());
		return false;
	}

	CVFSFile file;

	PSRETURN ret = file.Load(g_VFS, path);

	if (ret != PSRETURN_OK)
	{
		LOGERROR("Failed to load file '%s': %s", path.string8(), GetErrorString(ret));
		return false;
	}

	std::wstring code = wstring_from_utf8(file.DecodeUTF8()); // assume it's UTF-8

	utf16string codeUtf16(code.begin(), code.end());
	uint lineNo = 1;
	// CompileOptions does not copy the contents of the filename string pointer.
	// Passing a temporary string there will cause undefined behaviour, so we create a separate string to avoid the temporary.
	std::string filenameStr = path.string8();

	JS::RootedValue rval(m->m_cx);
	JS::CompileOptions opts(m->m_cx);
	opts.setFileAndLine(filenameStr.c_str(), lineNo);
	return JS::Evaluate(m->m_cx, global, opts,
			reinterpret_cast<const char16_t*>(codeUtf16.c_str()), (uint)(codeUtf16.length()), &rval);
}

void IGUIObject::RegisterScriptHandler(const CStr& Action, const CStr& Code, CGUI* pGUI)
{
	if(!GetGUI())
		throw PSERROR_GUI_OperationNeedsGUIObject();

	JSContext* cx = pGUI->GetScriptInterface()->GetContext();
	JSAutoRequest rq(cx);
	JS::RootedValue globalVal(cx, pGUI->GetGlobalObject());
	JS::RootedObject globalObj(cx, &globalVal.toObject());

	const int paramCount = 1;
	const char* paramNames[paramCount] = { "mouse" };

	// Location to report errors from
	CStr CodeName = GetName()+" "+Action;

	// Generate a unique name
	static int x = 0;
	char buf[64];
	sprintf_s(buf, ARRAY_SIZE(buf), "__eventhandler%d (%s)", x++, Action.c_str());

	JS::CompileOptions options(cx);
	options.setFileAndLine(CodeName.c_str(), 0);
	options.setCompileAndGo(true);

	JS::RootedFunction func(cx, JS_CompileFunction(cx, globalObj,
		buf, paramCount, paramNames, Code.c_str(), Code.length(), options));

	if (!func)
		return; // JS will report an error message

	JS::RootedObject funcObj(cx, JS_GetFunctionObject(func));
	SetScriptHandler(Action, funcObj);
}

void IGUIObject::ScriptEvent(const CStr& Action)
{
	auto it = m_ScriptHandlers.find(Action);
	if (it == m_ScriptHandlers.end())
		return;

	JSContext* cx = m_pGUI->GetScriptInterface()->GetContext();
	JSAutoRequest rq(cx);

	// Set up the 'mouse' parameter
	JS::RootedValue mouse(cx);
	m_pGUI->GetScriptInterface()->Eval("({})", &mouse);
	m_pGUI->GetScriptInterface()->SetProperty(mouse, "x", m_pGUI->m_MousePos.x, false);
	m_pGUI->GetScriptInterface()->SetProperty(mouse, "y", m_pGUI->m_MousePos.y, false);
	m_pGUI->GetScriptInterface()->SetProperty(mouse, "buttons", m_pGUI->m_MouseButtons, false);

	JS::AutoValueVector paramData(cx);
	paramData.append(mouse);
	JS::RootedObject obj(cx, GetJSObject());
	JS::RootedValue handlerVal(cx, JS::ObjectValue(*it->second));
	JS::RootedValue result(cx);
	bool ok = JS_CallFunctionValue(cx, obj, handlerVal, paramData, &result);
	if (!ok)
	{
		// We have no way to propagate the script exception, so just ignore it
		// and hope the caller checks JS_IsExceptionPending
	}
}

// Return file contents as an array of lines. Assume file is UTF-8 encoded text.
//
// lines = readFileLines(filename);
//   filename: VFS filename (may include path)
JS::Value JSI_VFS::ReadFileLines(ScriptInterface::CxPrivate* pCxPrivate, const std::wstring& filename)
{
	JSContext* cx = pCxPrivate->pScriptInterface->GetContext();
	JSAutoRequest rq(cx);
	//
	// read file
	//
	CVFSFile file;
	if (file.Load(g_VFS, filename) != PSRETURN_OK)
		return JSVAL_NULL;

	CStr contents = file.DecodeUTF8(); // assume it's UTF-8

	// Fix CRLF line endings. (This function will only ever be used on text files.)
	contents.Replace("\r\n", "\n");

	//
	// split into array of strings (one per line)
	//

	std::stringstream ss(contents);
	JS::RootedObject line_array(cx, JS_NewArrayObject(cx, JS::HandleValueArray::empty()));
	std::string line;
	int cur_line = 0;

	while (std::getline(ss, line))
	{
		// Decode each line as UTF-8
		JS::RootedValue val(cx);
		ScriptInterface::ToJSVal(cx, &val, CStr(line).FromUTF8());
		JS_SetElement(cx, line_array, cur_line++, val);
	}

	return JS::ObjectValue(*line_array);
}