195 lines
7.7 KiB
C++
195 lines
7.7 KiB
C++
/*==============================================================================
|
|
Copyright (c) 2005-2010 Joel de Guzman
|
|
Copyright (c) 2010-2011 Thomas Heller
|
|
|
|
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)
|
|
==============================================================================*/
|
|
#ifndef BOOST_PHOENIX_SCOPE_LOCAL_VARIABLE_HPP
|
|
#define BOOST_PHOENIX_SCOPE_LOCAL_VARIABLE_HPP
|
|
|
|
#include <boost/phoenix/core/limits.hpp>
|
|
#include <boost/phoenix/core/call.hpp>
|
|
#include <boost/phoenix/core/expression.hpp>
|
|
#include <boost/phoenix/core/reference.hpp>
|
|
#include <boost/phoenix/core/value.hpp>
|
|
#include <boost/phoenix/scope/scoped_environment.hpp>
|
|
#include <boost/phoenix/scope/detail/local_variable.hpp>
|
|
#include <boost/phoenix/statement/sequence.hpp>
|
|
|
|
namespace boost { namespace phoenix
|
|
{
|
|
namespace expression
|
|
{
|
|
template <typename Key>
|
|
struct local_variable
|
|
: expression::terminal<detail::local<Key> >
|
|
{
|
|
typedef typename expression::terminal<detail::local<Key> >::type type;
|
|
|
|
static type make()
|
|
{
|
|
type const e = {};
|
|
return e;
|
|
}
|
|
};
|
|
}
|
|
|
|
namespace rule
|
|
{
|
|
struct local_variable
|
|
: expression::local_variable<proto::_>
|
|
{};
|
|
|
|
struct local_var_def
|
|
: proto::assign<local_variable, meta_grammar>
|
|
{};
|
|
}
|
|
|
|
namespace result_of
|
|
{
|
|
template <typename Key>
|
|
struct is_nullary<custom_terminal<detail::local<Key> > >
|
|
: mpl::false_
|
|
{};
|
|
}
|
|
|
|
namespace detail
|
|
{
|
|
struct scope_is_nullary_actions
|
|
{
|
|
template <typename Rule, typename Dummy = void>
|
|
struct when
|
|
: boost::phoenix::is_nullary::when<Rule, Dummy>
|
|
{};
|
|
};
|
|
|
|
template <typename Dummy>
|
|
struct scope_is_nullary_actions::when<boost::phoenix::rule::custom_terminal, Dummy>
|
|
: proto::or_<
|
|
proto::when<boost::phoenix::rule::local_variable, mpl::true_()>
|
|
, proto::otherwise<
|
|
is_nullary::when<boost::phoenix::rule::custom_terminal, Dummy>
|
|
>
|
|
>
|
|
{};
|
|
|
|
struct local_var_not_found
|
|
{
|
|
};
|
|
}
|
|
|
|
template<typename Key>
|
|
struct is_custom_terminal<detail::local<Key> >
|
|
: mpl::true_
|
|
{};
|
|
|
|
template <typename Key>
|
|
struct custom_terminal<detail::local<Key> >
|
|
{
|
|
template <typename Sig>
|
|
struct result;
|
|
|
|
template <typename This, typename Local, typename Context>
|
|
struct result<This(Local, Context)>
|
|
: result<This(Local const &, Context)>
|
|
{};
|
|
|
|
template <typename This, typename Local, typename Context>
|
|
struct result<This(Local &, Context)>
|
|
{
|
|
typedef
|
|
typename remove_reference<
|
|
typename result_of::env<Context>::type
|
|
>::type
|
|
env_type;
|
|
|
|
typedef typename detail::apply_local<detail::local<Key>, env_type>::type type;
|
|
};
|
|
|
|
template <typename Local, typename Context>
|
|
typename result<custom_terminal(Local const &, Context const&)>::type
|
|
operator()(Local, Context const & ctx)
|
|
{
|
|
typedef
|
|
typename remove_reference<
|
|
typename result_of::env<Context>::type
|
|
>::type
|
|
env_type;
|
|
|
|
typedef typename detail::apply_local<detail::local<Key>, env_type>::type return_type;
|
|
|
|
static const int index_value = detail::get_index<typename env_type::map_type, detail::local<Key> >::value;
|
|
|
|
typedef detail::eval_local<Key> eval_local;
|
|
|
|
// Detect if the return_type is for a value.
|
|
//typedef typename is_value<return_type>::type is_value_type;
|
|
|
|
return eval_local::template get<return_type, index_value>(
|
|
phoenix::env(ctx));
|
|
}
|
|
};
|
|
|
|
namespace local_names
|
|
{
|
|
typedef expression::local_variable<struct _a_key>::type _a_type;
|
|
typedef expression::local_variable<struct _b_key>::type _b_type;
|
|
typedef expression::local_variable<struct _c_key>::type _c_type;
|
|
typedef expression::local_variable<struct _d_key>::type _d_type;
|
|
typedef expression::local_variable<struct _e_key>::type _e_type;
|
|
typedef expression::local_variable<struct _f_key>::type _f_type;
|
|
typedef expression::local_variable<struct _g_key>::type _g_type;
|
|
typedef expression::local_variable<struct _h_key>::type _h_type;
|
|
typedef expression::local_variable<struct _i_key>::type _i_type;
|
|
typedef expression::local_variable<struct _j_key>::type _j_type;
|
|
typedef expression::local_variable<struct _k_key>::type _k_type;
|
|
typedef expression::local_variable<struct _l_key>::type _l_type;
|
|
typedef expression::local_variable<struct _m_key>::type _m_type;
|
|
typedef expression::local_variable<struct _n_key>::type _n_type;
|
|
typedef expression::local_variable<struct _o_key>::type _o_type;
|
|
typedef expression::local_variable<struct _p_key>::type _p_type;
|
|
typedef expression::local_variable<struct _q_key>::type _q_type;
|
|
typedef expression::local_variable<struct _r_key>::type _r_type;
|
|
typedef expression::local_variable<struct _s_key>::type _s_type;
|
|
typedef expression::local_variable<struct _t_key>::type _t_type;
|
|
typedef expression::local_variable<struct _u_key>::type _u_type;
|
|
typedef expression::local_variable<struct _v_key>::type _v_type;
|
|
typedef expression::local_variable<struct _w_key>::type _w_type;
|
|
typedef expression::local_variable<struct _x_key>::type _x_type;
|
|
typedef expression::local_variable<struct _y_key>::type _y_type;
|
|
typedef expression::local_variable<struct _z_key>::type _z_type;
|
|
|
|
#ifndef BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
|
|
BOOST_ATTRIBUTE_UNUSED _a_type const _a = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _b_type const _b = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _c_type const _c = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _d_type const _d = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _e_type const _e = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _f_type const _f = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _g_type const _g = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _h_type const _h = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _i_type const _i = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _j_type const _j = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _k_type const _k = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _l_type const _l = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _m_type const _m = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _n_type const _n = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _o_type const _o = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _p_type const _p = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _q_type const _q = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _r_type const _r = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _s_type const _s = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _t_type const _t = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _u_type const _u = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _v_type const _v = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _w_type const _w = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _x_type const _x = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _y_type const _y = {{{}}};
|
|
BOOST_ATTRIBUTE_UNUSED _z_type const _z = {{{}}};
|
|
#endif
|
|
}
|
|
}}
|
|
|
|
#endif
|