mirror of https://github.com/CGAL/cgal
140 lines
3.2 KiB
C++
140 lines
3.2 KiB
C++
#ifndef CGAL_VECTOR_VECTOR_H
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#define CGAL_VECTOR_VECTOR_H
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#include <boost/type_traits/is_arithmetic.hpp>
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#include <boost/utility/enable_if.hpp>
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#include <CGAL/Dimension.h>
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#include <CGAL/marcutils.h>
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#include <vector>
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#include <boost/preprocessor/repetition.hpp>
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#include <boost/preprocessor/repetition/enum.hpp>
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namespace CGAL {
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template<class NT_,class Dim_,class Max_dim_=Dim_> struct Vector_vector {
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typedef NT_ NT;
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typedef std::vector<NT> type;
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struct Constructor {
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struct Dimension {
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type operator()(int d) const {
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return type(d);
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}
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};
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struct Iterator {
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template<typename Iter>
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type operator()(int d,Iter const& f,Iter const& e) const {
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CGAL_assertion(d==std::distance(f,e));
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return type(f,e);
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}
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};
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// unneeded thanks to Iterator_and_last?
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#if 0
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struct Iterator_add_one {
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template<typename Iter>
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type operator()(int d,Iter const& f,Iter const& e) const {
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CGAL_assertion(d==std::distance(f,e)+1);
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type a;
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a.reserve(d+1);
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a.insert(a.end(),f,e);
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a.push_back(1);
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return a;
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}
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};
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#endif
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struct Iterator_and_last {
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template<typename Iter,typename T>
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type operator()(int d,Iter const& f,Iter const& e,CGAL_FORWARDABLE(T) t) const {
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CGAL_assertion(d==std::distance(f,e)+1);
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type a;
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a.reserve(d+1);
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a.insert(a.end(),f,e);
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a.push_back(CGAL_FORWARD(T,t));
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return a;
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}
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};
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// useless, use a transform_iterator?
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#if 0
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struct Iterator_and_last_divide {
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template<typename Iter,typename T>
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type operator()(int d,Iter f,Iter const& e,T const&t) const {
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CGAL_assertion(d==std::distance(f,e)+1);
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type a;
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a.reserve(d+1);
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for(;f!=e;++f){
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a.push_back(*f/t);
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}
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return a;
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}
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};
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#endif
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struct Values {
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#ifdef CGAL_CXX0X
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template<class...U>
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type operator()(U&&...u) const {
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//TODO: check the right number of {}, g++ accepts one and two
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type a={forward_safe<NT,U>(u)...};
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return a;
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}
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#else
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#define VAR(Z,N,_) a.push_back(t##N);
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#define CODE(Z,N,_) type operator()(BOOST_PP_ENUM_PARAMS(N,NT const& t)) const { \
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type a; \
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a.reserve(N); \
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BOOST_PP_REPEAT(N,VAR,) \
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return a; \
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}
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BOOST_PP_REPEAT_FROM_TO(1, 11, CODE, _ )
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#undef CODE
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#undef VAR
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#endif
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};
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struct Values_divide {
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#ifdef CGAL_CXX0X
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template<class H,class...U>
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type operator()(H const&h,U&&...u) const {
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//TODO: do we want to cast at some point?
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//e.g. to avoid 1/2 in integers
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// ==> use Rational_traits<NT>().make_rational(x,y) ?
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type a={Rational_traits<NT>().make_rational(std::forward<U>(u),h)...};
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return a;
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}
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#else
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#define VAR(Z,N,_) a.push_back(Rational_traits<NT>().make_rational( t##N ,h));
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#define CODE(Z,N,_) template<class H> type \
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operator()(H const&h, BOOST_PP_ENUM_PARAMS(N,NT const& t)) const { \
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type a; \
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a.reserve(N); \
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BOOST_PP_REPEAT(N,VAR,) \
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return a; \
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}
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BOOST_PP_REPEAT_FROM_TO(1, 11, CODE, _ )
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#undef CODE
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#undef VAR
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#endif
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};
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};
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typedef typename type::const_iterator const_iterator;
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static const_iterator vector_begin(type const&a){
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return a.begin();
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}
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static const_iterator vector_end(type const&a){
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return a.end();
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}
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static int size_of_vector(type const&a){
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return a.size();
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}
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};
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}
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#endif
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