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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing#kwsys for details. */
#ifndef @KWSYS_NAMESPACE@_Status_hxx
#define @KWSYS_NAMESPACE@_Status_hxx
#include <@KWSYS_NAMESPACE@/Configure.hxx>
#include <string>
namespace @KWSYS_NAMESPACE@ {
/** \class Status
* \brief OS-specific status of a system operation.
*/
class @KWSYS_NAMESPACE@_EXPORT Status
{
public:
enum class Kind
{
Success,
POSIX,
#ifdef _WIN32
Windows,
#endif
};
/** Construct with kind "Success". */
Status() = default;
/** Construct with kind "Success". */
static Status Success() { return Status(); }
/** Construct with kind "POSIX" using given errno-style value. */
static Status POSIX(int e)
{
Status s(Kind::POSIX);
s.POSIX_ = e;
return s;
}
/** Construct with kind "POSIX" using errno. */
static Status POSIX_errno();
#ifdef _WIN32
/** Construct with kind "Windows" using given GetLastError()-style value. */
static Status Windows(unsigned int e)
{
Status s(Kind::Windows);
s.Windows_ = e;
return s;
}
/** Construct with kind "Windows" using GetLastError(). */
static Status Windows_GetLastError();
#endif
/** Return true on "Success", false otherwise. */
bool IsSuccess() const { return this->Kind_ == Kind::Success; }
/** Return true on "Success", false otherwise. */
explicit operator bool() const { return this->IsSuccess(); }
/** Return the kind of status. */
Kind GetKind() const { return this->Kind_; }
/** If the kind is "POSIX", returns the errno-style value.
Otherwise, returns 0. */
int GetPOSIX() const
{
return this->Kind_ == Kind::POSIX ? this->POSIX_ : 0;
}
#ifdef _WIN32
/** If the kind is "Windows", returns the GetLastError()-style value.
Otherwise, returns 0. */
unsigned int GetWindows() const
{
return this->Kind_ == Kind::Windows ? this->Windows_ : 0;
}
#endif
/** Return a human-readable description of the status. */
std::string GetString() const;
private:
Status(Kind kind)
: Kind_(kind)
{
}
Kind Kind_ = Kind::Success;
union
{
int POSIX_;
#ifdef _WIN32
unsigned int Windows_;
#endif
};
};
} // namespace @KWSYS_NAMESPACE@
#endif
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