mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-11-28 20:24:07 +00:00
823baf135f
* ffmpeg 5.0.1 build with: ./configure --disable-programs --disable-swscale --disable-avdevice --disable-avfilter --enable-shared --disable-xlib * arm64 libraries build on my M1 Macbook Pro, and x86_64 build on github action * Qt6.2 produce an uniserval binary, so delete macos-m1.yml. * add Ad-Hoc code sign
76 lines
1.7 KiB
C++
76 lines
1.7 KiB
C++
/*
|
|
* Open Chinese Convert
|
|
*
|
|
* Copyright 2010-2014 Carbo Kuo <byvoid@byvoid.com>
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
namespace opencc {
|
|
/**
|
|
* A class that wraps type T into a nullable type.
|
|
* @ingroup opencc_cpp_api
|
|
*/
|
|
template <typename T> class Optional {
|
|
public:
|
|
/**
|
|
* The constructor of Optional.
|
|
*/
|
|
Optional(T actual) : isNull(false), data(actual) {}
|
|
|
|
/**
|
|
* Returns true if the instance is null.
|
|
*/
|
|
bool IsNull() const { return isNull; }
|
|
|
|
/**
|
|
* Returns the containing data of the instance.
|
|
*/
|
|
const T& Get() const { return data; }
|
|
|
|
/**
|
|
* Constructs a null instance.
|
|
*/
|
|
static Optional<T> Null() { return Optional(); }
|
|
|
|
private:
|
|
Optional() : isNull(true) {}
|
|
|
|
bool isNull;
|
|
T data;
|
|
};
|
|
|
|
/**
|
|
* Specialization of Optional for pointers.
|
|
*
|
|
* Reduce a bool.
|
|
*/
|
|
template <typename T> class Optional<T*> {
|
|
private:
|
|
Optional() : data(nullptr) {}
|
|
|
|
typedef T* TPtr;
|
|
TPtr data;
|
|
|
|
public:
|
|
Optional(TPtr actual) : data(actual) {}
|
|
|
|
bool IsNull() const { return data == nullptr; }
|
|
|
|
const TPtr& Get() const { return data; }
|
|
|
|
static Optional<TPtr> Null() { return Optional(); }
|
|
};
|
|
} // namespace opencc
|