CXXR (C++ R)
ExpressionVector.h
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1 /*CXXR $Id: ExpressionVector.h 1351 2013-03-08 15:12:28Z arr $
2  *CXXR
3  *CXXR This file is part of CXXR, a project to refactor the R interpreter
4  *CXXR into C++. It may consist in whole or in part of program code and
5  *CXXR documentation taken from the R project itself, incorporated into
6  *CXXR CXXR (and possibly MODIFIED) under the terms of the GNU General Public
7  *CXXR Licence.
8  *CXXR
9  *CXXR CXXR is Copyright (C) 2008-13 Andrew R. Runnalls, subject to such other
10  *CXXR copyrights and copyright restrictions as may be stated below.
11  *CXXR
12  *CXXR CXXR is not part of the R project, and bugs and other issues should
13  *CXXR not be reported via r-bugs or other R project channels; instead refer
14  *CXXR to the CXXR website.
15  *CXXR */
16 
17 /*
18  * R : A Computer Language for Statistical Data Analysis
19  * Copyright (C) 1995, 1996 Robert Gentleman and Ross Ihaka
20  * Copyright (C) 1999-2006 The R Development Core Team.
21  * Andrew Runnalls (C) 2008
22  *
23  * This program is free software; you can redistribute it and/or modify
24  * it under the terms of the GNU General Public License as published by
25  * the Free Software Foundation; either version 2.1 of the License, or
26  * (at your option) any later version.
27  *
28  * This program is distributed in the hope that it will be useful,
29  * but WITHOUT ANY WARRANTY; without even the implied warranty of
30  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31  * GNU Lesser General Public License for more details.
32  *
33  * You should have received a copy of the GNU General Public License
34  * along with this program; if not, a copy is available at
35  * http://www.r-project.org/Licenses/
36  */
37 
48 #ifndef EXPRESSIONVECTOR_H
49 #define EXPRESSIONVECTOR_H
50 
51 #include "CXXR/VectorBase.h"
52 
53 #ifdef __cplusplus
54 
55 #include "CXXR/FixedVector.hpp"
56 #include "CXXR/SEXP_downcast.hpp"
57 
58 namespace CXXR {
59  // Template specialization:
60  template <>
61  inline const char* FixedVector<RHandle<>, EXPRSXP>::staticTypeName()
62  {
63  return "expression";
64  }
65 
76 } // namespace CXXR
77 
78 BOOST_CLASS_EXPORT_KEY(CXXR::ExpressionVector)
79 
80 extern "C" {
81 #endif /* __cplusplus */
82 
87 #ifndef __cplusplus
88  Rboolean Rf_isExpression(SEXP s);
89 #else
90  inline Rboolean Rf_isExpression(SEXP s)
91  {
92  return Rboolean(s && TYPEOF(s) == EXPRSXP);
93  }
94 #endif
95 
107 SEXP SET_XVECTOR_ELT(SEXP x, int i, SEXP v);
108 
118 #ifndef __cplusplus
119 SEXP XVECTOR_ELT(SEXP x, int i);
120 #else
121 inline SEXP XVECTOR_ELT(SEXP x, int i)
122 {
123  using namespace CXXR;
124  ExpressionVector* ev = SEXP_downcast<ExpressionVector*>(x, false);
125  return (*ev)[i];
126 }
127 #endif
128 
129 #ifdef __cplusplus
130 }
131 #endif
132 
133 #endif /* EXPRESSIONVECTOR_H */