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// file : build2/target.txx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build2/scope>
#include <build2/diagnostics>
#include <build2/prerequisite>
namespace build2
{
// prerequisite_members_range
//
template <typename T>
void prerequisite_members_range<T>::iterator::
switch_mode ()
{
// A group could be empty, so we may have to iterate.
//
do
{
g_ = resolve_group_members (r_->a_, search (*i_));
assert (g_.members != nullptr); // Group could not be resolved.
if (g_.count != 0) // Skip empty see through groups.
{
j_ = 1; // Start from the first group member.
break;
}
}
while (++i_ != r_->e_ && i_->type.see_through);
}
//
//
template <const char* ext>
optional<string>
target_extension_fix (const target_key&, const scope&, bool)
{
return string (ext);
}
template <const char* var, const char* def>
optional<string>
target_extension_var (const target_key& tk, const scope& s, bool)
{
// Include target type/pattern-specific variables.
//
if (auto l = s.find (var_pool[var], tk))
{
// Help the user here and strip leading '.' from the extension.
//
const string& e (cast<string> (l));
return !e.empty () && e.front () == '.' ? string (e, 1) : e;
}
return def != nullptr ? optional<string> (def) : nullopt;
}
}
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