Rcpp Version 1.0.9
is_sugar_expression.h
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1 // -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 4 -*-
2 //
3 // is_sugar_expression.h: Rcpp R/C++ interface class library --
4 //
5 // Copyright (C) 2010 - 2011 Dirk Eddelbuettel and Romain Francois
6 //
7 // This file is part of Rcpp.
8 //
9 // Rcpp is free software: you can redistribute it and/or modify it
10 // under the terms of the GNU General Public License as published by
11 // the Free Software Foundation, either version 2 of the License, or
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13 //
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15 // WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 // GNU General Public License for more details.
18 //
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20 // along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
21 
22 #ifndef Rcpp__traits__is_sugar_expression_h
23 #define Rcpp__traits__is_sugar_expression_h
24 
25 namespace Rcpp{
26 namespace traits{
27 
28  template<typename T>
30  template<typename U> struct _Wrap_type { };
31 
32  template<typename U>
34 
35  template<typename U>
36  static __two __test(...);
37 
38  public:
39  static const bool value = sizeof(__test<T>(0)) == 1;
40  };
41 
42  template<typename T> struct is_sugar_expression :
43  integral_constant<bool, _is_sugar_expression_helper<T>::value >{ };
44 
45 
46 }
47 }
48 
49 #endif
static __one __test(_Wrap_type< typename U::rcpp_sugar_expression > *)
Rcpp API.
Definition: algo.h:28