llvm/llvm-project

recognize aligned case statements

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#42 113 ouverte le 25 juil. 2019

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bugzillaclang-formatenhancementgood first issue

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Description

Bugzilla Link 42768
Version unspecified
OS Windows NT

Extended Description

Formatting this function currently does not make it more readable, as the alignment of statements is lost. Would it be possible to have an option to detect and ignore aligned cases ?

when inside a switch { detect the: case<.*>: pattern, maybe ?

// SEH (Structured Exception Handling) return codes are in the 0xC000000-0xfffff00 range

std::wstring GetSEHcodeDescription(DWORD code)
{
    switch (code) {
    case EXCEPTION_ACCESS_VIOLATION:         return L"EXCEPTION_ACCESS_VIOLATION";
    case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:    return L"EXCEPTION_ARRAY_BOUNDS_EXCEEDED";
    case EXCEPTION_BREAKPOINT:               return L"EXCEPTION_BREAKPOINT";
    case EXCEPTION_DATATYPE_MISALIGNMENT:    return L"EXCEPTION_DATATYPE_MISALIGNMENT";
    case EXCEPTION_FLT_DENORMAL_OPERAND:     return L"EXCEPTION_FLT_DENORMAL_OPERAND";
    case EXCEPTION_FLT_DIVIDE_BY_ZERO:       return L"EXCEPTION_FLT_DIVIDE_BY_ZERO";
    case EXCEPTION_FLT_INEXACT_RESULT:       return L"EXCEPTION_FLT_INEXACT_RESULT";
    case EXCEPTION_FLT_INVALID_OPERATION:    return L"EXCEPTION_FLT_INVALID_OPERATION";
    case EXCEPTION_FLT_OVERFLOW:             return L"EXCEPTION_FLT_OVERFLOW";
    case EXCEPTION_FLT_STACK_CHECK:          return L"EXCEPTION_FLT_STACK_CHECK";
    case EXCEPTION_FLT_UNDERFLOW:            return L"EXCEPTION_FLT_UNDERFLOW";
    case EXCEPTION_ILLEGAL_INSTRUCTION:      return L"EXCEPTION_ILLEGAL_INSTRUCTION";
    case EXCEPTION_IN_PAGE_ERROR:            return L"EXCEPTION_IN_PAGE_ERROR";
    case EXCEPTION_INT_DIVIDE_BY_ZERO:       return L"EXCEPTION_INT_DIVIDE_BY_ZERO";
    case EXCEPTION_INT_OVERFLOW:             return L"EXCEPTION_INT_OVERFLOW";
    case EXCEPTION_INVALID_DISPOSITION:      return L"EXCEPTION_INVALID_DISPOSITION";
    case EXCEPTION_NONCONTINUABLE_EXCEPTION: return L"EXCEPTION_NONCONTINUABLE_EXCEPTION";
    case EXCEPTION_PRIV_INSTRUCTION:         return L"EXCEPTION_PRIV_INSTRUCTION";
    case EXCEPTION_SINGLE_STEP:              return L"EXCEPTION_SINGLE_STEP";
    case EXCEPTION_STACK_OVERFLOW:           return L"EXCEPTION_STACK_OVERFLOW";

    // undocumented? but regularly seen codes
    case 0xC0000142:                         return L"DllMain returned false";
    case 0xC0000022:                         return L"executable or one of the dependant dlls do not have execute rights";
    default: return L"UNKNOWN EXCEPTION";
    }
}

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