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// Author(s): Wieger Wesselink
// Copyright: see the accompanying file COPYING or copy at
// https://svn.win.tue.nl/trac/MCRL2/browser/trunk/COPYING
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
/// \file builder_test.cpp
/// \brief Builder tests.
#include <set>
#include <iostream>
#include <boost/test/minimal.hpp>
#include "mcrl2/data/builder.h"
#include "mcrl2/data/add_binding.h"
#include "mcrl2/data/parse.h"
using namespace mcrl2;
using namespace mcrl2::data;
variable bool_(std::string name)
{
return variable(name, sort_bool::bool_());
}
template <typename Derived>
struct my_builder: public add_data_variable_binding<data::data_expression_builder, Derived>
{
typedef add_data_variable_binding<data::data_expression_builder, Derived> super;
using super::enter;
using super::leave;
using super::operator();
using super::is_bound;
std::multiset<variable> unbound;
data_expression operator()(const variable& v)
{
if (!is_bound(v))
{
unbound.insert(v);
}
return super::operator()(v);
}
};
template <template <class> class Builder, template <template <class> class, class> class Binder, class Substitution>
struct replace_free_variables_builder: public Binder<Builder, replace_free_variables_builder<Builder, Binder, Substitution> >
{
typedef Binder<Builder, replace_free_variables_builder<Builder, Binder, Substitution> > super;
using super::enter;
using super::leave;
using super::operator();
using super::is_bound;
using super::increase_bind_count;
Substitution sigma;
replace_free_variables_builder(Substitution sigma_)
: sigma(sigma_)
{}
template <typename VariableContainer>
replace_free_variables_builder(Substitution sigma_, const VariableContainer& bound_variables)
: sigma(sigma_)
{
increase_bind_count(bound_variables);
}
data_expression operator()(const variable& v)
{
if (is_bound(v))
{
return v;
}
return sigma(v);
}
#if BOOST_MSVC
#include "mcrl2/core/detail/builder_msvc.inc.h"
#endif
};
struct subst: public std::unary_function<data::variable, data::data_expression>
{
data_expression operator()(const variable& v)
{
if (v == bool_("b"))
{
return bool_("a");
}
else if (v == bool_("c"))
{
return bool_("d");
}
return bool_("e");
}
};
template <template <class> class Builder, template <template <class> class, class> class Binder, class Substitution>
replace_free_variables_builder<Builder, Binder, Substitution>
make_replace_free_variables_builder(Substitution sigma)
{
return replace_free_variables_builder<Builder, Binder, Substitution>(sigma);
}
template <template <class> class Builder, template <template <class> class, class> class Binder, class Substitution, class VariableContainer>
replace_free_variables_builder<Builder, Binder, Substitution>
make_replace_free_variables_builder(Substitution sigma, const VariableContainer& bound_variables)
{
return replace_free_variables_builder<Builder, Binder, Substitution>(sigma, bound_variables);
}
void test_binding()
{
variable_vector v;
v.push_back(bool_("c"));
v.push_back(bool_("d"));
data_expression x = parse_data_expression("exists b: Bool. if(c, c, b)", v.begin(), v.end());
core::apply_builder<my_builder> f;
f(x);
BOOST_CHECK(f.unbound.size() == 2);
size_t count = f.unbound.erase(bool_("c"));
BOOST_CHECK(count == 2);
std::multiset<variable> bound_variables;
bound_variables.insert(bool_("c"));
data::data_expression y = make_replace_free_variables_builder<data::data_expression_builder, data::add_data_variable_binding>(subst())(x);
data::data_expression z = make_replace_free_variables_builder<data::data_expression_builder, data::add_data_variable_binding>(subst(), bound_variables)(x);
BOOST_CHECK(y == parse_data_expression("exists b: Bool. if(d, d, b)", v.begin(), v.end()));
BOOST_CHECK(z == x);
}
int test_main(int argc, char* argv[])
{
test_binding();
return EXIT_SUCCESS;
}
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