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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// Range.h: Rcpp R/C++ interface class library --
//
// Copyright (C) 2010 - 2013 Dirk Eddelbuettel and Romain Francois
//
// This file is part of Rcpp.
//
// Rcpp is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// Rcpp is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
#ifndef RCPP_SUGAR_RANGE_H
#define RCPP_SUGAR_RANGE_H
namespace Rcpp{
class Range : public VectorBase<INTSXP,false, Range >{
public:
Range( R_xlen_t start_, R_xlen_t end__ ) : start(start_), end_(end__){
if( start_ > end__ ){
throw std::range_error( "upper value must be greater than lower value" ) ;
}
}
inline R_xlen_t size() const{
return end_ - start + 1;
}
inline R_xlen_t operator[]( R_xlen_t i) const {
return start + i ;
}
Range& operator++() {
start++ ; end_++ ;
return *this ;
}
Range operator++(int) {
Range orig(*this) ;
++(*this);
return orig ;
}
Range& operator--() {
start-- ; end_-- ;
return *this ;
}
Range operator--(int) {
Range orig(*this) ;
--(*this);
return orig ;
}
Range& operator+=( int n ) {
start += n ; end_ += n ;
return *this ;
}
Range& operator-=( int n ) {
start -= n ; end_ -= n ;
return *this ;
}
Range operator+( int n ){
return Range( start + n, end_ + n ) ;
}
Range operator-( int n ){
return Range( start - n, end_ - n ) ;
}
inline R_xlen_t get_start() const { return start ; }
inline R_xlen_t get_end() const { return end_ ; }
private:
R_xlen_t start ;
R_xlen_t end_ ;
} ;
}
#endif
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