Rcpp Version 0.12.12
sets.h
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1 // -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
2 //
3 // sets.h: Rcpp R/C++ interface class library --
4 //
5 // Copyright (C) 2012 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
12 // (at your option) any later version.
13 //
14 // Rcpp is distributed in the hope that it will be useful, but
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 //
19 // You should have received a copy of the GNU General Public License
20 // along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
21 
22 #ifndef Rcpp__sugar__sets_h
23 #define Rcpp__sugar__sets_h
24 
25 #if __cplusplus >= 201103L
26  #define RCPP_UNORDERED_SET std::unordered_set
27  #define RCPP_UNORDERED_MAP std::unordered_map
28 
29  namespace std {
30  template<>
31  struct hash<Rcpp::String> {
32  std::size_t operator()(const Rcpp::String& key) const {
33  return pointer_hasher( key.get_sexp() ) ;
34  }
35  hash<SEXP> pointer_hasher ;
36  };
37  }
38 
39 #elif defined(HAS_TR1_UNORDERED_SET)
40  #define RCPP_UNORDERED_SET std::tr1::unordered_set
41  #define RCPP_UNORDERED_MAP std::tr1::unordered_map
42 
43  namespace std {
44  namespace tr1 {
45  template<>
46  struct hash<Rcpp::String> {
47  std::size_t operator()(const Rcpp::String& key) const {
48  return pointer_hasher( key.get_sexp() ) ;
49  }
50  hash<SEXP> pointer_hasher ;
51  };
52  }
53  }
54 
55 
56 #else
57  #define RCPP_UNORDERED_SET std::set
58  #define RCPP_UNORDERED_MAP std::map
59 #endif
60 
61 #endif
SEXP get_sexp() const
Definition: String.h:367
Definition: swap.h:25
Rcpp API.
Definition: algo.h:28