84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
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/*** try_catch.h - Error processing through structured exceptions
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*
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* Copyright (c) 1998-1999 Microsoft Corporation. All Rights Reserved.
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*
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* Author: Yan Leshinsky (YanL)
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* Created 10/08/98
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*
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* MODIFICATION HISTORY
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*/
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#pragma once
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#pragma warning( disable : 4102 ) // many of the labels will remain unreferenced
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inline HRESULT MakeHRESULT(int iRet) { return HRESULT_FROM_WIN32(iRet); }
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inline HRESULT MakeHRESULT(LONG lRet) { return HRESULT_FROM_WIN32(lRet); }
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inline HRESULT MakeHRESULT(DWORD lRet) { return HRESULT_FROM_WIN32(lRet); }
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#ifdef USE_EXCEPTIONS
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#define try_block try { HRESULT __hr = S_OK;
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#define catch_all } catch (HRESULT){}
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#define catch_return } catch (HRESULT __hr){ return __hr; }
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#define catch_set(hr) } catch (HRESULT __hr){ hr = __hr; }
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#define throw_now throw __hr
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// Compiler com support
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inline void __stdcall _com_issue_error(HRESULT hr) { throw hr; }
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#else
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#define try_block { HRESULT __hr = S_OK;
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#define catch_all catch_block: ; }
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#define catch_return catch_block: return __hr; }
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#define catch_set(hr) catch_block: hr = __hr; }
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#define throw_now goto catch_block
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// Disable throw in compiler com support
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inline void __stdcall _com_issue_error(HRESULT hr) {}
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#endif
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#ifdef _DEBUG
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// Print erroneous line
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#define THIS_FILE _T(__FILE__)
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inline void __dump(LPCTSTR szFileName, int nLine, LPCTSTR szPrompt, HRESULT hr) {
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TCHAR szMsg[ 1024 ];
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TCHAR szErr[ 256 ];
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DWORD cMsgLen = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, (DWORD)hr, LANG_NEUTRAL, szErr, sizeof(szErr), NULL);
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wsprintf(szMsg, _T("ERROR File %hs, Line %d\r\n\t\t\t%s\r\n\t\t\t0x%08X\t%s"), szFileName, nLine, szPrompt, (DWORD)hr,
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cMsgLen ? szErr : _T("Unknown error") );
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OutputDebugString(szMsg);
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}
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#else
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#define __dump(szFileName, nLine, szPrompt, hr)
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#endif /* _DEBUG */
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// If return code FAILED throw it
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#define throw_hr(f) { __hr = (f); if (FAILED(__hr)) { __dump(THIS_FILE, __LINE__, #f, __hr); throw_now; } }
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// If return code isn't ERROR_SUCCESS convert it to HRESULT and throw it
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#define throw_err(f) { __hr = MakeHRESULT(f); if (FAILED(__hr)) { __dump(THIS_FILE, __LINE__, #f, __hr); throw_now; } }
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// If return code false throw last error
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#define throw_flast(f) if (!(f)) { __hr = MakeHRESULT(GetLastError()); __dump(THIS_FILE, __LINE__, #f, __hr); throw_now; }
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// If return code false throw specific HRESULT
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#define throw_fhr(f, hr) if (!(f)) { __hr = hr; __dump(THIS_FILE, __LINE__, #f, __hr); throw_now; }
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// If return code false throw specific Win32 error
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#define throw_ferr(f, err) if (!(f)) { __hr = MakeHRESULT(err); __dump(THIS_FILE, __LINE__, #f, __hr); throw_now; }
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#define throw_fmem(f) throw_fhr(f, E_OUTOFMEMORY)
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#define throw_fpar(f) throw_fhr(f, E_INVALIDARG)
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