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// file : libbuild2/config/utility.ixx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
namespace build2
{
namespace config
{
LIBBUILD2_SYMEXPORT pair<lookup, bool>
lookup_config_impl (scope&, const variable&, uint64_t);
template <typename T>
pair<lookup, bool>
lookup_config_impl (scope&, const variable&, T&&, uint64_t, bool);
inline lookup
lookup_config (scope& rs, const variable& var, uint64_t sflags)
{
return lookup_config_impl (rs, var, sflags).first;
}
inline lookup
lookup_config (bool& new_value,
scope& rs,
const variable& var,
uint64_t sflags)
{
auto r (lookup_config_impl (rs, var, sflags));
new_value = new_value || r.second;
return r.first;
}
template <typename T>
inline lookup
lookup_config (scope& rs,
const variable& var,
T&& def_val,
uint64_t sflags,
bool def_ovr)
{
return lookup_config_impl (rs,
var,
std::forward<T> (def_val), // VC14
sflags,
def_ovr).first;
}
template <typename T>
inline lookup
lookup_config (bool& new_value,
scope& rs,
const variable& var,
T&& def_val,
uint64_t sflags,
bool def_ovr)
{
auto r (lookup_config_impl (rs,
var,
std::forward<T> (def_val), // VC14
sflags,
def_ovr));
new_value = new_value || r.second;
return r.first;
}
}
}
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