initial

public/datamodel/dmvar.h

@@ -0,0 +1,106 @@
+//====== Copyright <20> 1996-2004, Valve Corporation, All rights reserved. =======
+//
+// Purpose: 
+//
+//=============================================================================
+
+#ifndef DMVAR_H
+#define DMVAR_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+class CDmAttribute;
+
+//-----------------------------------------------------------------------------
+// Helper template for external attributes
+//-----------------------------------------------------------------------------
+template< typename T >
+class CDmaVar
+{
+	typedef typename CDmAttributeInfo< T >::StorageType_t D;
+
+public:
+	CDmaVar( );
+
+	// Setup to be used in OnConstruction methods of DmElements
+	void Init( CDmElement *pOwner, const char *pAttributeName, int flags = 0 );
+	void InitAndSet( CDmElement *pOwner, const char *pAttributeName, const T &value, int flags = 0 );
+
+	// Set/get
+	const T& Set( const T &val );
+	const T& Get() const;
+
+	// Cast operators
+	operator const T&() const;
+	const T* operator->() const;
+
+	// Assignment operator
+	const CDmaVar<T>& operator=( const CDmaVar<T>& src );
+
+	// Math utility operations
+	const T& operator=( const T &val );
+	const T& operator+=( const T &val ); 
+	const T& operator-=( const T &val ); 
+	const T& operator/=( const T &val ); 
+	const T& operator*=( const T &val ); 
+	const T& operator^=( const T &val ); 
+	const T& operator|=( const T &val ); 
+	const T& operator&=( const T &val ); 
+	T operator++();
+	T operator--();
+	T operator++( int ); // postfix version..
+	T operator--( int ); // postfix version..
+
+	// Returns the attribute associated with the var
+	CDmAttribute *GetAttribute();
+	const CDmAttribute *GetAttribute() const;
+
+	// Is the attribute dirty?
+	bool IsDirty() const;
+
+protected:
+	const T& Value() const;
+	T& Value();
+	const D& Storage() const;
+	D& Storage();
+
+private:
+	D m_Storage;
+
+protected:
+	CDmAttribute *m_pAttribute;
+};
+
+//-----------------------------------------------------------------------------
+// Specialization for string
+//-----------------------------------------------------------------------------
+class CDmaString : public CDmaVar< CUtlSymbolLarge >
+{
+public:
+	const char *GetString() const;
+	const char *Get( ) const;
+	operator const char*() const;
+
+	void InitAndSet( CDmElement *pOwner, const char *pAttributeName, const char *pValue, int flags = 0 );
+	void Set( const char *pValue );
+	CDmaString &operator=( const char *src );
+	const CDmaString& operator=( const CDmaString& src );
+
+	// Returns strlen
+	int	Length() const;
+	bool IsEmpty() const;
+};
+
+//-----------------------------------------------------------------------------
+//
+// Inline methods for CDmaString
+//
+//-----------------------------------------------------------------------------
+
+inline const char *CDmaString::GetString() const
+{
+	return this->Value().String();
+}
+#endif // DMVAR_H