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2018-02-08 21:28:33 -05:00
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+/*=============================================================================
+    Copyright (c) 2003 Jonathan de Halleux (dehalleux@pelikhan.com)
+    http://spirit.sourceforge.net/
+
+  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_SPIRIT_ACTOR_ASSIGN_ACTOR_HPP
+#define BOOST_SPIRIT_ACTOR_ASSIGN_ACTOR_HPP
+
+#include <boost/spirit/home/classic/namespace.hpp>
+#include <boost/spirit/home/classic/actor/ref_value_actor.hpp>
+#include <boost/spirit/home/classic/actor/ref_const_ref_actor.hpp>
+
+namespace boost { namespace spirit {
+
+BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
+
+    ///////////////////////////////////////////////////////////////////////////
+    //  Summary:
+    //  A semantic action policy that applies the assignement operator.
+    //  (This doc uses convention available in actors.hpp)
+    //
+    //  Actions (what it does):
+    //      ref = value;
+    //      ref = T(first,last);
+    //      ref = value_ref;
+    //
+    //  Policy name:
+    //      assign_action
+    //
+    //  Policy holder, corresponding helper method:
+    //      ref_value_actor, assign_a( ref );
+    //      ref_const_ref_actor, assign_a( ref, value_ref );
+    //
+    //  () operators: both
+    //
+    //  See also ref_value_actor and ref_const_ref_actor for more details.
+    ///////////////////////////////////////////////////////////////////////////
+    struct assign_action
+    {
+        template<
+            typename T,
+            typename ValueT
+        >
+        void act(T& ref_, ValueT const& value_) const
+        {
+            ref_ = value_;
+        }
+        template<
+            typename T,
+            typename IteratorT
+        >
+        void act(
+            T& ref_,
+            IteratorT const& first_,
+            IteratorT const& last_
+            ) const
+        {
+            typedef T value_type;
+#ifndef BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
+            value_type value(first_,last_);
+#else
+            value_type value;
+            std::copy(first_, last_, std::inserter(value, value.end()));
+#endif
+            ref_ = value;
+        }
+    };
+
+    // Deprecated. Please use assign_a
+    template<typename T>
+    inline ref_value_actor<T,assign_action> assign(T& ref_)
+    {
+        return ref_value_actor<T,assign_action>(ref_);
+    }
+
+    template<typename T>
+    inline ref_value_actor<T,assign_action> assign_a(T& ref_)
+    {
+        return ref_value_actor<T,assign_action>(ref_);
+    }
+
+    template<
+        typename T,
+        typename ValueT
+    >
+    inline ref_const_ref_actor<T,ValueT,assign_action> assign_a(
+        T& ref_,
+        ValueT const& value_
+    )
+    {
+        return ref_const_ref_actor<T,ValueT,assign_action>(ref_,value_);
+    }
+
+BOOST_SPIRIT_CLASSIC_NAMESPACE_END
+
+}}
+
+#endif