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// file : build2/test/script/script.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build2/test/script/script>
#include <build2/target>
using namespace std;
namespace build2
{
namespace test
{
namespace script
{
script::
script (target& tt, target& st)
: test_target (tt), script_target (st)
{
// Unless we have the test variable set on the test or script target,
// set it at the script level to the test target's path.
//
{
// Note: use the same variable type as in buildfile.
//
const variable& var (var_pool.insert<path> ("test"));
if (!find (var))
{
value& v (assign (var));
// If this is a path-based target, then we use the path. If this
// is a directory (alias) target, then we use the directory path.
// Otherwise, we leave it NULL expecting the testscript to set it
// to something appropriate, if used.
//
if (auto* p = tt.is_a<path_target> ())
v = p->path ();
else if (tt.is_a<dir> ())
v = path (tt.dir.string ()); // Strip trailing slash.
}
}
}
lookup scope::
find (const variable& var) const
{
// Search script scopes until we hit the root.
//
const scope* p (this);
do
{
if (const value* v = p->vars.find (var))
return lookup (v, &p->vars);
}
while (p->parent != nullptr ? (p = p->parent) : nullptr);
// Switch to the corresponding buildfile variable. Note that we don't
// want to insert a new variable into the pool (we might be running
// concurrently). Plus, if there is no such variable, then we cannot
// possibly find any value.
//
const variable* pvar (build2::var_pool.find (var.name));
if (pvar == nullptr)
return lookup ();
const script& s (static_cast<const script&> (*p));
{
const variable& var (*pvar);
// First check the target we are testing.
//
{
// Note that we skip applying the override if we did not find any
// value. In this case, presumably the override also affects the
// script target and we will pick it up there. A bit fuzzy.
//
auto p (s.test_target.find_original (var, true));
if (p.first)
{
if (var.override != nullptr)
p = s.test_target.base_scope ().find_override (
var, move (p), true);
return p.first;
}
}
// Then the script target followed by the scopes it is in. Note that
// while unlikely it is possible the test and script targets will be
// in different scopes which brings the question of which scopes we
// should search.
//
return s.script_target[var];
}
}
value& scope::
append (const variable& var)
{
lookup l (find (var));
if (l.defined () && l.belongs (*this)) // Existing var in this scope.
return const_cast<value&> (*l);
value& r (assign (var)); // NULL.
//@@ I guess this is where we convert untyped value to strings?
//
if (l.defined ())
r = *l; // Copy value (and type) from the outer scope.
return r;
}
}
}
}
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