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// file : libbuild2/target-state.hxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#ifndef LIBBUILD2_TARGET_STATE_HXX
#define LIBBUILD2_TARGET_STATE_HXX
#include <libbuild2/types.hxx>
#include <libbuild2/utility.hxx>
#include <libbuild2/export.hxx>
namespace build2
{
// The order of the enumerators is arranged so that their integral values
// indicate whether one "overrides" the other in the "merge" operator|
// (see below).
//
// Note that postponed is "greater" than unchanged since it may result in
// the changed state.
//
// Note also that value 0 is available to indicate absent/invalid state.
//
// NOTE: don't forget to also update operator<<(ostream,target_state) if
// changing anything here.
//
enum class target_state: uint8_t
{
uninitialized = 0,
unknown,
unchanged,
postponed,
busy,
changed,
failed,
group // Target's state is the group's state.
};
inline target_state&
operator |= (target_state& l, target_state r)
{
if (static_cast<uint8_t> (r) > static_cast<uint8_t> (l))
l = r;
return l;
}
LIBBUILD2_SYMEXPORT string
to_string (target_state); // target.cxx
inline ostream&
operator<< (ostream& o, target_state ts)
{
return o << to_string (ts);
}
}
#endif // LIBBUILD2_TARGET_STATE_HXX
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