add Class Adapter

adapter/Adapter.cpp

@@ -1,17 +0,0 @@
-/*
- * C++ Design Patterns: Adapter
- * Author: Jakub Vojvoda [github.com/JakubVojvoda]
- * 2016
- *
- * Source code is licensed under MIT licence
- * (for more details see LICENCE)
- * 
- */
-
-#include <iostream>
-
-int main()
-{
-
-  return 0;
-} 

adapter/ClassAdapter.cpp

@@ -0,0 +1,59 @@
+/*
+ * C++ Design Patterns: Adapter (Class scope)
+ * Author: Jakub Vojvoda [github.com/JakubVojvoda]
+ * 2016
+ *
+ * Source code is licensed under MIT licence
+ * (for more details see LICENCE)
+ *
+ */
+
+#include <iostream>
+
+/*
+ * Target
+ * defines specific interface that Client uses
+ */
+class Target {
+public:
+  virtual void request() = 0;
+  // ...
+};
+
+/*
+ * Adaptee
+ * all requests get delegated to the Adaptee which defines
+ * an existing interface that needs adapting
+ */
+class Adaptee {
+public:
+  void specificRequest() {
+    std::cout << "specific request" << std::endl;
+    // ...
+  }
+  // ...
+};
+
+/*
+ * Adapter
+ * implements the Target interface and lets the Adaptee respond
+ * to request on a Target by extending both classes
+ * ie adapts the interface of Adaptee to the Target interface
+ */
+class Adapter : public Target, private Adaptee {
+public:
+  virtual void request() {
+    specificRequest();
+    // ...
+  }
+  // ...
+};
+
+
+int main()
+{
+  Target *t = new Adapter();
+  t->request();
+
+  return 0;
+}