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// file : libbuild2/in/target.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <libbuild2/in/target.hxx>
using namespace std;
namespace build2
{
namespace in
{
static const target*
in_search (context& ctx, const target* xt, const prerequisite_key& cpk)
{
// If we have no extension then derive it from our target. Then delegate
// to file_search().
//
prerequisite_key pk (cpk);
optional<string>& e (pk.tk.ext);
if (!e && xt != nullptr)
{
// Why is the extension, say, .h.in and not .in (with .h being in the
// name)? While this is mostly academic (in this case things will work
// the same either way), conceptually, it is a header template rather
// than some file template. In other words, we are adding the second
// level classification.
//
// See also the low verbosity tidying up code in the rule.
//
if (const file* t = xt->is_a<file> ())
{
const string& te (t->derive_extension ());
e = te + (te.empty () ? "" : ".") + "in";
}
else
fail << "prerequisite " << pk << " for a non-file target " << *xt;
}
return file_search (ctx, xt, pk);
}
static bool
in_pattern (const target_type&,
const scope&,
string&,
optional<string>&,
const location& l,
bool)
{
fail (l) << "pattern in in{} prerequisite" << endf;
}
const target_type in::static_type
{
"in",
&file::static_type,
&target_factory<in>,
&target_extension_none,
nullptr, /* default_extension */ // Taken care of by search.
&in_pattern,
&target_print_1_ext_verb, // Same as file (but see rule).
&in_search,
target_type::flag::none
};
}
}
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