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// file : build2/prerequisite.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build2/prerequisite>
#include <build2/scope>
#include <build2/target>
#include <build2/context>
#include <build2/diagnostics>
using namespace std;
namespace build2
{
// prerequisite_key
//
const optional<string> prerequisite_key::nullproj = nullopt;
ostream&
operator<< (ostream& os, const prerequisite_key& pk)
{
if (pk.proj)
os << *pk.proj << '%';
//
// Don't print scope if we are project-qualified or the prerequisite's
// directory is absolute. In both these cases the scope is not used to
// resolve it to target.
//
else if (!pk.tk.dir->absolute ())
{
// Avoid printing './' in './:...', similar to what we do for the
// directory in target_key.
//
const dir_path& s (pk.scope->out_path ());
if (stream_verb (os) < 2)
{
const string& r (diag_relative (s, false));
if (!r.empty ())
os << r << ':';
}
else
os << s << ':';
}
return os << pk.tk;
}
// prerequisite
//
static inline optional<string>
to_ext (const string* e)
{
return e != nullptr ? optional<string> (*e) : nullopt;
}
prerequisite::
prerequisite (const target_type& t)
: proj (nullopt),
type (t.type ()),
dir (t.dir),
out (t.out), // @@ If it's empty, then we treat as undetermined?
name (t.name),
ext (to_ext (t.ext ())),
scope (t.base_scope ()),
target (&t)
{
}
bool prerequisite::
belongs (const target_type& t) const
{
const auto& p (t.prerequisites ());
return !(p.empty () || this < &p.front () || this > &p.back ());
}
}
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