mirror of
https://github.com/facebook/sapling.git
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745d047762
Summary: This resolves a dependency cycle introduced in D23037325 (f4f159537f) and D23480435 (34821976e0) Reviewed By: xavierd Differential Revision: D23735176 fbshipit-source-id: a4849d512e4181afbb007d7e850aadf092c6eb90
85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This software may be used and distributed according to the terms of the
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* GNU General Public License version 2.
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*/
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#pragma once
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#ifdef _WIN32
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#include <string>
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#include <system_error>
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#include "folly/logging/xlog.h"
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#include "folly/portability/Windows.h"
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namespace facebook {
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namespace eden {
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class Win32ErrorCategory : public std::error_category {
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public:
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const char* name() const noexcept override;
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std::string message(int error) const override;
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static const std::error_category& get() noexcept;
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};
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class HResultErrorCategory : public std::error_category {
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public:
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const char* name() const noexcept override;
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std::string message(int error) const override;
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static const std::error_category& get() noexcept;
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};
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//
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// Helper function to build and throw the system error from Win32 and HResult
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//
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inline std::system_error makeHResultErrorExplicit(
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HRESULT code,
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const std::string& description) {
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return std::system_error(code, HResultErrorCategory::get(), description);
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}
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[[noreturn]] inline void throwHResultErrorExplicit(
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HRESULT code,
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const std::string& description) {
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throw makeHResultErrorExplicit(code, description);
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}
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inline std::system_error makeWin32ErrorExplicit(
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DWORD code,
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const std::string& description) {
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return std::system_error(code, Win32ErrorCategory::get(), description);
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}
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[[noreturn]] inline void throwWin32ErrorExplicit(
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DWORD code,
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const std::string& description) {
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throw makeWin32ErrorExplicit(code, description);
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}
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std::string win32ErrorToString(uint32_t error);
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//
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// exceptionToHResult is called inside a catch. It will try to return an
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// appropriate HRESULT code for the exception. again and catch the right
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//
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HRESULT exceptionToHResult(const std::exception& ex) noexcept;
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// This function can take a function with no args and run it under a try catch
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// block. It will catch the exception and return a HRESULT for that. Use a
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// lambda if you need to pass args.
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//
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template <typename Callable>
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static HRESULT exceptionToHResultWrapper(Callable&& f) noexcept {
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try {
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return f();
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} catch (const std::exception& ex) {
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return exceptionToHResult(ex);
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}
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}
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} // namespace eden
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} // namespace facebook
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#endif
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