comparison DEPENDENCIES/generic/include/boost/spirit/home/lex/lexer/action.hpp @ 16:2665513ce2d3

Add boost headers

+//  Copyright (c) 2001-2011 Hartmut Kaiser
+// 
+//  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)
+
+#if !defined(SPIRIT_LEX_ACTION_NOV_18_2007_0743PM)
+#define SPIRIT_LEX_ACTION_NOV_18_2007_0743PM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/lex/meta_compiler.hpp>
+#include <boost/spirit/home/lex/lexer_type.hpp>
+#include <boost/spirit/home/lex/argument.hpp>
+#include <boost/spirit/home/lex/lexer/support_functions.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/type_traits/remove_const.hpp>
+#include <boost/type_traits/is_same.hpp>
+
+///////////////////////////////////////////////////////////////////////////////
+namespace boost { namespace spirit { namespace lex
+{
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename Subject, typename Action>
+    struct action : unary_lexer<action<Subject, Action> >
+    {
+        action(Subject const& subject, Action f)
+          : subject(subject), f(f) {}
+
+        template <typename LexerDef, typename String>
+        void collect(LexerDef& lexdef, String const& state
+          , String const& targetstate) const
+        {
+            // collect the token definition information for the token_def 
+            // this action is attached to
+            subject.collect(lexdef, state, targetstate);
+        }
+
+        template <typename LexerDef>
+        void add_actions(LexerDef& lexdef) const
+        {
+            // call to add all actions attached further down the hierarchy 
+            subject.add_actions(lexdef);
+
+            // retrieve the id of the associated token_def and register the 
+            // given semantic action with the lexer instance
+            lexdef.add_action(subject.unique_id(), subject.state(), f);
+        }
+
+        Subject subject;
+        Action f;
+
+    private:
+        // silence MSVC warning C4512: assignment operator could not be generated
+        action& operator= (action const&);
+    };
+
+}}}
+
+///////////////////////////////////////////////////////////////////////////////
+namespace boost { namespace spirit
+{
+    ///////////////////////////////////////////////////////////////////////////
+    // Karma action meta-compiler
+    template <>
+    struct make_component<lex::domain, tag::action>
+    {
+        template <typename Sig>
+        struct result;
+
+        template <typename This, typename Elements, typename Modifiers>
+        struct result<This(Elements, Modifiers)>
+        {
+            typedef typename
+                remove_const<typename Elements::car_type>::type
+            subject_type;
+
+            typedef typename
+                remove_const<typename Elements::cdr_type::car_type>::type
+            action_type;
+
+            typedef lex::action<subject_type, action_type> type;
+        };
+
+        template <typename Elements>
+        typename result<make_component(Elements, unused_type)>::type
+        operator()(Elements const& elements, unused_type) const
+        {
+            typename result<make_component(Elements, unused_type)>::type
+                result(elements.car, elements.cdr.car);
+            return result;
+        }
+    };
+}}
+
+#endif