comparison DEPENDENCIES/generic/include/boost/tti/has_function.hpp @ 16:2665513ce2d3

Add boost headers

+
+//  (C) Copyright Edward Diener 2012,2013
+//  Use, modification and distribution are subject to 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(BOOST_TTI_HAS_FUNCTION_HPP)
+#define BOOST_TTI_HAS_FUNCTION_HPP
+
+#include <boost/function_types/property_tags.hpp>
+#include <boost/mpl/vector.hpp>
+#include <boost/preprocessor/cat.hpp>
+#include <boost/tti/detail/dfunction.hpp>
+#include <boost/tti/gen/has_function_gen.hpp>
+
+/*
+
+  The succeeding comments in this file are in doxygen format.
+
+*/
+
+/** \file
+*/
+
+/// Expands to a metafunction which tests whether a member function or a static member function with a particular name and signature exists.
+/**
+
+    trait = the name of the metafunction within the tti namespace.
+    
+    name  = the name of the inner member.
+
+    generates a metafunction called "trait" where 'trait' is the macro parameter.
+    
+              template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_R,class BOOST_TTI_TP_FS,class BOOST_TTI_TP_TAG>
+              struct trait
+                {
+                static const value = unspecified;
+                typedef mpl::bool_<true-or-false> type;
+                };
+
+              The metafunction types and return:
+    
+                BOOST_TTI_TP_T   = the enclosing type in which to look for our 'name'.
+                
+                BOOST_TTI_TP_R   = the return type of the function
+                
+                BOOST_TTI_TP_FS  = (optional) the parameters of the function as a boost::mpl forward sequence
+                          if function parameters are not empty.
+                
+                BOOST_TTI_TP_TAG = (optional) a boost::function_types tag to apply to the function
+                          if the need for a tag exists.
+                
+                returns = 'value' is true if the 'name' exists, 
+                          with the appropriate static member function type,
+                          otherwise 'value' is false.
+                          
+*/
+#define BOOST_TTI_TRAIT_HAS_FUNCTION(trait,name) \
+  BOOST_TTI_DETAIL_TRAIT_HAS_FUNCTION(trait,name) \
+  template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_R,class BOOST_TTI_TP_FS = boost::mpl::vector<>,class BOOST_TTI_TP_TAG = boost::function_types::null_tag> \
+  struct trait : \
+    BOOST_PP_CAT(trait,_detail_hf)<BOOST_TTI_TP_T,BOOST_TTI_TP_R,BOOST_TTI_TP_FS,BOOST_TTI_TP_TAG> \
+    { \
+    }; \
+/**/
+
+/// Expands to a metafunction which tests whether a member function or a static member function with a particular name and signature exists.
+/**
+
+    name  = the name of the inner member.
+
+    generates a metafunction called "has_function_name" where 'name' is the macro parameter.
+    
+              template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_R,class BOOST_TTI_TP_FS,class BOOST_TTI_TP_TAG>
+              struct trait
+                {
+                static const value = unspecified;
+                typedef mpl::bool_<true-or-false> type;
+                };
+
+              The metafunction types and return:
+    
+                BOOST_TTI_TP_T   = the enclosing type in which to look for our 'name'.
+                
+                BOOST_TTI_TP_R   = the return type of the function
+                
+                BOOST_TTI_TP_FS  = (optional) the parameters of the function as a boost::mpl forward sequence
+                          if function parameters are not empty.
+                
+                BOOST_TTI_TP_TAG = (optional) a boost::function_types tag to apply to the function
+                          if the need for a tag exists.
+                
+                returns = 'value' is true if the 'name' exists, 
+                          with the appropriate function type,
+                          otherwise 'value' is false.
+                          
+*/
+#define BOOST_TTI_HAS_FUNCTION(name) \
+  BOOST_TTI_TRAIT_HAS_FUNCTION \
+  ( \
+  BOOST_TTI_HAS_FUNCTION_GEN(name), \
+  name \
+  ) \
+/**/
+
+#endif // BOOST_TTI_HAS_FUNCTION_HPP