add async result

doric/async/async_result.h

@@ -0,0 +1,49 @@
+#ifndef ASYNC_RESULT_H
+#define ASYNC_RESULT_H
+
+#include <QDebug>
+#include <QVariant>
+
+#include "callback.h"
+
+template <class R>
+class AsyncResult {
+
+private:
+    QVariant result;
+    Callback<R> *callback;
+
+public:
+    AsyncResult() {}
+
+    AsyncResult(R result) {
+        this->result.setValue(result);
+    }
+
+    void setResult(R result) {
+        this->result.setValue(result);
+        if (callback != nullptr) {
+            this->callback->onResult(result);
+            this->callback->onFinish();
+        }
+    }
+
+    void setError(QException *exception) {
+        this->result->setValue(exception);
+        if (callback != nullptr) {
+            this->callback->onError(exception);
+            this->callback->onFinish();
+        }
+    }
+
+    bool hasResult() {
+        qDebug() << result.typeName();
+        return !QString(result.typeName()).isEmpty();
+    }
+
+    R *getResult() {
+        return static_cast<R*>(result.data());
+    }
+};
+
+#endif // ASYNC_RESULT_H

doric/async/callback.h

@@ -0,0 +1,18 @@
+#ifndef CALLBACK_H
+#define CALLBACK_H
+
+#include <QException>
+
+template <class R>
+class Callback {
+
+public:
+
+    virtual void onResult(R result) = 0;
+
+    virtual void onError(QException exception) = 0;
+
+    virtual void onFinish() = 0;
+};
+
+#endif // CALLBACK_H