v01

thirdparty/Pangolin/include/pangolin/var/varvalue.h

@@ -0,0 +1,114 @@
+/* This file is part of the Pangolin Project.
+ * http://github.com/stevenlovegrove/Pangolin
+ *
+ * Copyright (c) 2014 Steven Lovegrove
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+#include <pangolin/var/varvaluet.h>
+#include <pangolin/var/varwrapper.h>
+
+namespace pangolin
+{
+
+template<typename T>
+class VarValue : public VarValueT<typename std::remove_reference<T>::type>
+{
+public:
+    typedef typename std::remove_reference<T>::type VarT;
+
+    ~VarValue()
+    {
+        delete str_ptr;
+    }
+
+    VarValue()
+    {
+        Init();
+    }
+
+    VarValue(const T& value)
+        : value(value), default_value(value)
+    {
+        Init();
+    }
+
+    VarValue(const T& value, const VarT& default_value)
+        : value(value), default_value(default_value)
+    {
+        Init();
+    }
+
+    const char* TypeId() const
+    {
+        return typeid(VarT).name();
+    }
+
+    void Reset()
+    {
+        value = default_value;
+    }
+
+    VarMeta& Meta()
+    {
+        return meta;
+    }
+
+    const VarT& Get() const
+    {
+        return value;
+    }
+
+    VarT& Get()
+    {
+        return value;
+    }
+
+    void Set(const VarT& val)
+    {
+        value = val;
+    }
+
+protected:
+    void Init()
+    {
+        if(std::is_same<VarT,std::string>::value) {
+            str_ptr = 0;
+            this->str = (VarValueT<std::string>*)this;
+        }else{
+            str_ptr = new VarWrapper<std::string,VarT>(*this);
+            this->str = str_ptr;
+        }
+    }
+
+    // If non-zero, this class owns this str pointer in the base-class.
+    VarValueT<std::string>* str_ptr;
+
+    T value;
+    VarT default_value;
+    VarMeta meta;
+};
+
+}