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Diffstat (limited to '3rdParty/Boost/src/boost/spirit/home/phoenix/core/value.hpp')
-rw-r--r--3rdParty/Boost/src/boost/spirit/home/phoenix/core/value.hpp158
1 files changed, 158 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/phoenix/core/value.hpp b/3rdParty/Boost/src/boost/spirit/home/phoenix/core/value.hpp
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+++ b/3rdParty/Boost/src/boost/spirit/home/phoenix/core/value.hpp
@@ -0,0 +1,158 @@
+/*=============================================================================
+ Copyright (c) 2001-2007 Joel de Guzman
+
+ 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 PHOENIX_CORE_VALUE_HPP
+#define PHOENIX_CORE_VALUE_HPP
+
+#include <boost/spirit/home/phoenix/core/actor.hpp>
+#include <boost/spirit/home/phoenix/core/as_actor.hpp>
+#include <boost/static_assert.hpp>
+
+#include <boost/type_traits/is_reference.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+#include <boost/type_traits/add_const.hpp>
+#include <boost/type_traits/add_reference.hpp>
+#include <boost/type_traits/remove_pointer.hpp>
+#include <boost/type_traits/is_function.hpp>
+
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/identity.hpp>
+
+namespace boost { namespace phoenix
+{
+ namespace meta
+ {
+ template<typename T>
+ struct const_ref
+ : add_reference<typename add_const<T>::type>
+ {};
+
+ template<typename T>
+ struct argument_type
+ : mpl::eval_if<
+ is_function<typename remove_pointer<T>::type>,
+ mpl::identity<T>,
+ const_ref<T> >
+ {
+ typedef T type;
+ };
+ }
+
+ template <typename T>
+ struct value
+ {
+ BOOST_STATIC_ASSERT(
+ mpl::not_<is_reference<T> >::value != 0);
+
+ typedef mpl::false_ no_nullary;
+
+ template <typename Env>
+ struct result
+ {
+ typedef T type;
+ };
+
+ value()
+ : val() {}
+
+ value(T const& arg)
+ : val(arg) {}
+
+ template <typename Env>
+ T const&
+ eval(Env const&) const
+ {
+ return val;
+ }
+
+ T val;
+ };
+
+ template <typename Actor>
+ struct actor_value
+ {
+ typedef typename Actor::no_nullary no_nullary;
+
+ template <typename Env>
+ struct result
+ {
+ typedef typename
+ remove_reference<
+ typename eval_result<Actor, Env>::type
+ >::type
+ type;
+ };
+
+ actor_value(Actor const& actor)
+ : actor(actor) {}
+
+ template <typename Env>
+ typename result<Env>::type
+ eval(Env const& env) const
+ {
+ return actor.eval(env);
+ }
+
+ Actor actor;
+ };
+
+ template <typename T>
+ inline typename as_actor<T>::type
+ val(T const& v)
+ {
+ return as_actor<T>::convert(v);
+ }
+
+ template <typename Derived>
+ inline actor<actor_value<Derived> >
+ val(actor<Derived> const& actor)
+ {
+ return actor_value<Derived>(actor);
+ }
+
+ template <typename T>
+ struct as_actor_base
+ {
+ typedef value<T> type;
+
+ static value<T>
+ convert(typename meta::argument_type<T>::type x)
+ {
+ return value<T>(x);
+ }
+ };
+
+ // Sometimes it is necessary to auto-convert references to
+ // a value<T>. This happens when we are re-currying. This
+ // cannot happen through the standard public actor interfaces.
+ template <typename T>
+ struct as_actor_base<T&>
+ {
+ typedef value<T> type;
+
+ static value<T>
+ convert(T& x)
+ {
+ return value<T>(x);
+ }
+ };
+
+ template <typename T, int N>
+ struct as_actor_base<T[N]>
+ {
+ typedef value<T const*> type;
+
+ static value<T const*>
+ convert(T const x[N])
+ {
+ return value<T const*>(x);
+ }
+ };
+}}
+
+#endif