From 5fb7c972d44a3ce0a067101885d2e0c1966e7c89 Mon Sep 17 00:00:00 2001
From: Yann Herklotz <ymherklotz@gmail.com>
Date: Thu, 2 Nov 2017 18:46:49 +0000
Subject: Adding logsink

---
 yage/core/logsink.h | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 55 insertions(+), 2 deletions(-)

(limited to 'yage/core/logsink.h')

diff --git a/yage/core/logsink.h b/yage/core/logsink.h
index bdfc70cf..e898d15f 100644
--- a/yage/core/logsink.h
+++ b/yage/core/logsink.h
@@ -1,5 +1,5 @@
 /* ----------------------------------------------------------------------------
- * logger.cpp
+ * logsink.h
  *
  * Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com> -- MIT License
  * See file LICENSE for more details
@@ -11,6 +11,7 @@
 
 #include "logmessage.h"
 
+#include <memory>
 #include <string>
 
 namespace yage
@@ -19,9 +20,61 @@ namespace yage
 class LogSink
 {
 public:
-    void operator()(const LogMessage::Meta &, const std::string &message);
+    template <typename T>
+    LogSink(T impl);
+
+    void write(const LogMessage::Meta &meta, const std::string &msg);
+
+private:
+    struct Concept {
+        virtual ~Concept() = default;
+
+        virtual Concept *clone() const = 0;
+        virtual void write(const LogMessage::Meta &meta,
+                           const std::string &msg) = 0;
+    };
+
+    template <typename T>
+    struct Model : Concept {
+        Model(T impl_i);
+        virtual Concept *clone() const override;
+        virtual void write(const LogMessage::Meta &meta,
+                           const std::string &msg) override;
+
+        T impl;
+    };
+
+    std::unique_ptr<Concept> wrapper_;
 };
 
+/* -----------------------------------------------------------------------------
+ * Template Implementation
+ * -----------------------------------------------------------------------------
+ */
+
+template <typename T>
+LogSink::LogSink(T impl) : wrapper_(new Model<T>(std::move(impl)))
+{
+}
+
+template <typename T>
+LogSink::Model<T>::Model(T impl_i) : impl(impl_i)
+{
+}
+
+template <typename T>
+LogSink::Concept *LogSink::Model<T>::clone() const
+{
+    return new Model<T>(impl);
+}
+
+template <typename T>
+void LogSink::Model<T>::write(const LogMessage::Meta &meta,
+                              const std::string &msg)
+{
+    impl(meta, msg);
+}
+
 } // namespace yage
 
 #endif
-- 
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