Add CheckedUniquePtr

Author: halfgaar

CMakeLists.shared

@@ -91,6 +91,7 @@ set(FLASHMQ_HEADERS
     ${RELPATH}checkedsharedptr.h
     ${RELPATH}sharedmutexowned.h
     ${RELPATH}reentrantmap.h
+    ${RELPATH}checkeduniqueptr.h
 )
 
 set(FLASHMQ_IMPLS

checkeduniqueptr.h

@@ -0,0 +1,63 @@
+#ifndef CHECKEDUNIQUEPTR_H
+#define CHECKEDUNIQUEPTR_H
+
+#include <stdexcept>
+#include <memory>
+
+class CheckedUniquePtrNull : private std::exception
+{
+public:
+    virtual const char* what() const noexcept override
+    {
+        return "CheckedUniquePtrNull pointer null";
+    }
+};
+
+template<typename T>
+class CheckedUniquePtr
+{
+    std::unique_ptr<T> d;
+
+public:
+    CheckedUniquePtr() = default;
+
+    template<typename... Args>
+    CheckedUniquePtr(Args... args) :
+        d(args...)
+    {
+
+    }
+
+    CheckedUniquePtr(std::unique_ptr<T> &&other)
+    {
+        d = std::move(other);
+    }
+
+    T &operator*()
+    {
+        if (!d)
+            throw CheckedUniquePtrNull();
+
+        return *d;
+    }
+
+    T *operator->()
+    {
+        if (!d)
+            throw CheckedUniquePtrNull();
+
+        return d.get();
+    }
+
+    void reset()
+    {
+        d.reset();
+    }
+
+    operator bool() const
+    {
+        return static_cast<bool>(d);
+    }
+};
+
+#endif // CHECKEDUNIQUEPTR_H