mirror of
https://github.com/NixOS/nix.git
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8433027e35
At this point many features are stripped out, but this works:
- Can run libnix{util,store,expr} unit tests
- Can run some Nix commands
Co-Authored-By volth <volth@volth.com>
Co-Authored-By Brian McKenna <brian@brianmckenna.org>
51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
#pragma once
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///@file
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#include <errhandlingapi.h>
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#include "error.hh"
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namespace nix {
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/**
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* Windows Error type.
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*
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* Unless you need to catch a specific error number, don't catch this in
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* portable code. Catch `SystemError` instead.
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*/
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class WinError : public SystemError
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{
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public:
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DWORD lastError;
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/**
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* Construct using the explicitly-provided error number.
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* `FormatMessageA` will be used to try to add additional
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* information to the message.
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*/
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template<typename... Args>
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WinError(DWORD lastError, const Args & ... args)
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: SystemError(""), lastError(lastError)
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{
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auto hf = HintFmt(args...);
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err.msg = HintFmt("%1%: %2%", Uncolored(hf.str()), renderError(lastError));
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}
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/**
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* Construct using `GetLastError()` and the ambient "last error".
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*
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* Be sure to not perform another last-error-modifying operation
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* before calling this constructor!
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*/
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template<typename... Args>
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WinError(const Args & ... args)
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: WinError(GetLastError(), args ...)
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{
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}
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private:
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std::string renderError(DWORD lastError);
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};
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}
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