Professional System Library: Introduction

#pragma once

#include "ProSysLib_i.h"

////////////////////
// Exception codes;
//
#define EX_MIN				exGeneric			// Minimum exception code;

#define EX_GENERALFAILURE	exGeneric			// Generic or unknown Run-Time error occurred.
#define EX_INDEXOUTOFRANGE	exIndexOutOfRange	// Object index is outside the range of array bounds.
#define EX_NOTIMPLEMENTED	exNotImplemented	// Property or method was only declared but not implemented in your version of ProSysLib.
#define EX_LOWMEMORY		exLowMemory			// Failed to allocate enough memory to perform the operation.
#define EX_NOACCESS			exAccessDenied		// Insufficient Access Rights or Privileges to perform the operation.
#define EX_INVALIDPARAMETER	exInvalidParameter	// Value for property or a method parameter wasn�t recognized as valid.
#define EX_WMIERROR			exWMIError			// A WMI-specific error occurred.

#define EX_MAX				exWMIError			// Maximum exception code;

#define COM_ERROR_BASE		0x200				// Custom error code base as recommended by Microsoft;

#define DECLARE_EXCEPTION(A) const int E_##A = MAKE_HRESULT(SEVERITY_ERROR, FACILITY_ITF, COM_ERROR_BASE + EX_##A);

///////////////////////////////////////
// Declaring all supported exceptions;
//
DECLARE_EXCEPTION(GENERALFAILURE)
DECLARE_EXCEPTION(INDEXOUTOFRANGE)
DECLARE_EXCEPTION(NOTIMPLEMENTED)
DECLARE_EXCEPTION(LOWMEMORY)
DECLARE_EXCEPTION(NOACCESS)
DECLARE_EXCEPTION(INVALIDPARAMETER)
DECLARE_EXCEPTION(WMIERROR)

HRESULT GetGlobalExitCode(PSLException exCode, const CLSID & clsID, const IID ID);

template<const CLSID * clsID, const IID * ID>
class CPSLException: public ISupportErrorInfo
{
public:

	CPSLException():m_exCode(exNone){}

	void SetException(PSLException exCode)
	{
		m_exCode = exCode;
	}

	HRESULT MakeException(PSLException exCode)
	{
		m_exCode = exCode;
		return GetGlobalExitCode(exCode, *clsID, *ID);
	}

protected:

	STDMETHODIMP InterfaceSupportsErrorInfo(REFIID riid)
	{
		static const IID* arr[] = {ID};
		for(int i = 0; i < sizeof(arr) / sizeof(arr[0]); i++)
		{
			if(InlineIsEqualGUID(*arr[i], riid))
				return S_OK;
		}
		return S_FALSE;
	}

	HRESULT GetExitCode()
	{
		return GetGlobalExitCode(m_exCode, *clsID, *ID);
	}

private:

	PSLException m_exCode; // Exception Code;
};

#define PSL_BEGIN	SetException(exNone);try{
#define PSL_END	}catch(...){SetException(exGeneric);}return GetExitCode();