custom exception types

hw3d/ChiliException.cpp

+/******************************************************************************************
+*	Chili Direct3D Engine																  *
+*	Copyright 2018 PlanetChili <http://www.planetchili.net>								  *
+*																						  *
+*	This file is part of Chili Direct3D Engine.											  *
+*																						  *
+*	Chili Direct3D Engine is free software: you can redistribute it and/or modify		  *
+*	it under the terms of the GNU General Public License as published by				  *
+*	the Free Software Foundation, either version 3 of the License, or					  *
+*	(at your option) any later version.													  *
+*																						  *
+*	The Chili Direct3D Engine is distributed in the hope that it will be useful,		  *
+*	but WITHOUT ANY WARRANTY; without even the implied warranty of						  *
+*	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the						  *
+*	GNU General Public License for more details.										  *
+*																						  *
+*	You should have received a copy of the GNU General Public License					  *
+*	along with The Chili Direct3D Engine.  If not, see <http://www.gnu.org/licenses/>.    *
+******************************************************************************************/
+#include "ChiliException.h"
+#include <sstream>
+
+
+ChiliException::ChiliException( int line,const char* file ) noexcept
+	:
+	line( line ),
+	file( file )
+{}
+
+const char* ChiliException::what() const noexcept
+{
+	std::ostringstream oss;
+	oss << GetType() << std::endl
+		<< GetOriginString();
+	whatBuffer = oss.str();
+	return whatBuffer.c_str();
+}
+
+const char* ChiliException::GetType() const noexcept
+{
+	return "Chili Exception";
+}
+
+int ChiliException::GetLine() const noexcept
+{
+	return line;
+}
+
+const std::string& ChiliException::GetFile() const noexcept
+{
+	return file;
+}
+
+std::string ChiliException::GetOriginString() const noexcept
+{
+	std::ostringstream oss;
+	oss << "[File] " << file << std::endl
+		<< "[Line] " << line;
+	return oss.str();
+}
\ No newline at end of file

hw3d/ChiliException.h

+/******************************************************************************************
+*	Chili Direct3D Engine																  *
+*	Copyright 2018 PlanetChili <http://www.planetchili.net>								  *
+*																						  *
+*	This file is part of Chili Direct3D Engine.											  *
+*																						  *
+*	Chili Direct3D Engine is free software: you can redistribute it and/or modify		  *
+*	it under the terms of the GNU General Public License as published by				  *
+*	the Free Software Foundation, either version 3 of the License, or					  *
+*	(at your option) any later version.													  *
+*																						  *
+*	The Chili Direct3D Engine is distributed in the hope that it will be useful,		  *
+*	but WITHOUT ANY WARRANTY; without even the implied warranty of						  *
+*	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the						  *
+*	GNU General Public License for more details.										  *
+*																						  *
+*	You should have received a copy of the GNU General Public License					  *
+*	along with The Chili Direct3D Engine.  If not, see <http://www.gnu.org/licenses/>.    *
+******************************************************************************************/
+#pragma once
+#include <exception>
+#include <string>
+
+class ChiliException : public std::exception
+{
+public:
+	ChiliException( int line,const char* file ) noexcept;
+	const char* what() const noexcept override;
+	virtual const char* GetType() const noexcept;
+	int GetLine() const noexcept;
+	const std::string& GetFile() const noexcept;
+	std::string GetOriginString() const noexcept;
+private:
+	int line;
+	std::string file;
+protected:
+	mutable std::string whatBuffer;
+};

hw3d/Window.cpp

@@ -18,6 +18,7 @@
 *	along with The Chili Direct3D Engine.  If not, see <http://www.gnu.org/licenses/>.    *
 ******************************************************************************************/
 #include "Window.h"
+#include <sstream>
 
 
 // Window Class Stuff
@@ -125,3 +126,55 @@ LRESULT Window::HandleMsg( HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam ) noex
 
 	return DefWindowProc( hWnd,msg,wParam,lParam );
 }
+
+
+// Window Exception Stuff
+Window::Exception::Exception( int line,const char * file,HRESULT hr ) noexcept
+	:
+	ChiliException( line,file ),
+	hr( hr )
+{}
+
+const char * Window::Exception::what() const noexcept
+{
+	std::ostringstream oss;
+	oss << GetType() << std::endl
+		<< "[Error Code] " << GetErrorCode() << std::endl
+		<< "[Description] " << GetErrorString() << std::endl
+		<< GetOriginString();
+	whatBuffer = oss.str();
+	return whatBuffer.c_str();
+}
+
+const char* Window::Exception::GetType() const noexcept
+{
+	return "Chili Window Exception";
+}
+
+std::string Window::Exception::TranslateErrorCode( HRESULT hr ) noexcept
+{
+	char* pMsgBuf = nullptr;
+	DWORD nMsgLen = FormatMessage(
+		FORMAT_MESSAGE_ALLOCATE_BUFFER |
+		FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+		nullptr,hr,MAKELANGID( LANG_NEUTRAL,SUBLANG_DEFAULT ),
+		reinterpret_cast<LPSTR>(&pMsgBuf),0,nullptr
+	);
+	if( nMsgLen == 0 )
+	{
+		return "Unidentified error code";
+	}
+	std::string errorString = pMsgBuf;
+	LocalFree( pMsgBuf );
+	return errorString;
+}
+
+HRESULT Window::Exception::GetErrorCode() const noexcept
+{
+	return hr;
+}
+
+std::string Window::Exception::GetErrorString() const noexcept
+{
+	return TranslateErrorCode( hr );
+}

hw3d/Window.h

@@ -19,10 +19,24 @@
 ******************************************************************************************/
 #pragma once
 #include "ChiliWin.h"
+#include "ChiliException.h"
 
 
 class Window
 {
+public:
+	class Exception : public ChiliException
+	{
+	public:
+		Exception( int line,const char* file,HRESULT hr ) noexcept;
+		const char* what() const noexcept override;
+		virtual const char* GetType() const noexcept;
+		static std::string TranslateErrorCode( HRESULT hr ) noexcept;
+		HRESULT GetErrorCode() const noexcept;
+		std::string GetErrorString() const noexcept;
+	private:
+		HRESULT hr;
+	};
 private:
 	// singleton manages registration/cleanup of window class
 	class WindowClass
@@ -53,3 +67,7 @@ private:
 	int height;
 	HWND hWnd;
 };
+
+
+// error exception helper macro
+#define CHWND_EXCEPT( hr ) Window::Exception( __LINE__,__FILE__,hr )
\ No newline at end of file

hw3d/hw3d.vcxproj

@@ -145,11 +145,13 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="ChiliException.cpp" />
     <ClCompile Include="Window.cpp" />
     <ClCompile Include="WindowsMessageMap.cpp" />
     <ClCompile Include="WinMain.cpp" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="ChiliException.h" />
     <ClInclude Include="ChiliWin.h" />
     <ClInclude Include="Window.h" />
     <ClInclude Include="WindowsMessageMap.h" />

hw3d/hw3d.vcxproj.filters

@@ -24,6 +24,9 @@
     <ClCompile Include="Window.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="ChiliException.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="WindowsMessageMap.h">
@@ -35,5 +38,8 @@
     <ClInclude Include="Window.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="ChiliException.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file