/usr/lib/R/site-library/dplyr/include/dplyr/SubsetVectorVisitorImpl.h is in r-cran-dplyr 0.7.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 | #ifndef dplyr_SubsetVectorVisitor_Impl_H
#define dplyr_SubsetVectorVisitor_Impl_H
#include <tools/collapse.h>
#include <tools/utils.h>
#include <dplyr/VectorVisitorImpl.h>
#include <dplyr/SubsetVectorVisitor.h>
namespace dplyr {
/**
* Implementations
*/
template <int RTYPE>
class SubsetVectorVisitorImpl : public SubsetVectorVisitor {
public:
typedef Rcpp::Vector<RTYPE> VECTOR;
/**
* The type of data : int, double, SEXP, Rcomplex
*/
typedef typename Rcpp::traits::storage_type<RTYPE>::type STORAGE;
SubsetVectorVisitorImpl(const VECTOR& vec_) : vec(vec_) {}
inline SEXP subset(const Rcpp::IntegerVector& index) const {
return subset_int_index(index);
}
inline SEXP subset(const std::vector<int>& index) const {
return subset_int_index(index);
}
inline SEXP subset(const SlicingIndex& index) const {
return subset_int_index(index);
}
inline SEXP subset(const ChunkIndexMap& map) const {
int n = output_size(map);
VECTOR out = Rcpp::no_init(n);
ChunkIndexMap::const_iterator it = map.begin();
for (int i = 0; i < n; i++, ++it)
out[i] = vec[ it->first ];
copy_most_attributes(out, vec);
return out;
}
inline SEXP subset(EmptySubset) const {
VECTOR out(0);
copy_most_attributes(out, vec);
return out;
}
inline std::string get_r_type() const {
return VectorVisitorType<RTYPE>();
}
inline int size() const {
return vec.size();
}
inline bool is_compatible(SubsetVectorVisitor* other, std::stringstream&, const SymbolString&) const {
return is_same_typeid(other);
}
protected:
VECTOR vec;
template <typename Container>
inline SEXP subset_int_index(const Container& index) const {
int n = output_size(index);
VECTOR out = Rcpp::no_init(n);
for (int i = 0; i < n; i++) {
if (index[i] < 0) {
out[i] = VECTOR::get_na();
} else {
out[i] = vec[ index[i] ];
}
}
copy_most_attributes(out, vec);
return out;
}
};
template <>
template <typename Container>
SEXP SubsetVectorVisitorImpl<VECSXP>::subset_int_index(const Container& index) const {
int n = output_size(index);
List out(n);
for (int i = 0; i < n; i++)
out[i] = (index[i] < 0) ? R_NilValue : vec[ index[i] ];
copy_most_attributes(out, vec);
return out;
}
class SubsetFactorVisitor : public SubsetVectorVisitorImpl<INTSXP> {
public:
typedef SubsetVectorVisitorImpl<INTSXP> Parent;
SubsetFactorVisitor(const IntegerVector& vec_) : Parent(vec_) {
levels = get_levels(vec);
levels_ptr = Rcpp::internal::r_vector_start<STRSXP>(levels);
}
inline SEXP subset(const Rcpp::IntegerVector& index) const {
return promote(Parent::subset(index));
}
inline SEXP subset(const SlicingIndex& index) const {
return promote(Parent::subset(index));
}
inline SEXP subset(const std::vector<int>& index) const {
return promote(Parent::subset(index));
}
inline SEXP subset(const ChunkIndexMap& map) const {
return promote(Parent::subset(map));
}
inline SEXP subset(EmptySubset empty) const {
return promote(Parent::subset(empty));
}
inline std::string get_r_type() const {
return get_single_class(Parent::vec);
}
inline bool is_same_type(SubsetVectorVisitor* other, std::stringstream& ss, const SymbolString& name) const {
return is_same_typeid(other) && same_levels(dynamic_cast<SubsetFactorVisitor*>(other), ss, name);
}
inline bool is_compatible(SubsetVectorVisitor* other, std::stringstream&, const SymbolString&) const {
return is_same_typeid(other) || (typeid(*other) == typeid(SubsetVectorVisitorImpl<STRSXP>));
}
private:
inline bool same_levels(SubsetFactorVisitor* other, std::stringstream& ss, const SymbolString& name) const {
CharacterVector levels_other = other->levels;
if (!character_vector_equal(levels, levels_other)) {
ss << "Factor levels not equal for column `" << name.get_utf8_cstring() << "`";
return false;
}
return true;
}
inline SEXP promote(IntegerVector x) const {
copy_most_attributes(x, vec);
return x;
}
CharacterVector levels;
SEXP* levels_ptr;
};
class DateSubsetVectorVisitor : public SubsetVectorVisitor {
public:
DateSubsetVectorVisitor(SEXP data) : impl(0) {
if (TYPEOF(data) == INTSXP) {
impl = new SubsetVectorVisitorImpl<INTSXP>(data);
} else if (TYPEOF(data) == REALSXP) {
impl = new SubsetVectorVisitorImpl<REALSXP>(data);
} else {
stop("Unreachable");
}
}
~DateSubsetVectorVisitor() {
delete impl;
}
virtual SEXP subset(const Rcpp::IntegerVector& index) const {
return impl->subset(index);
}
virtual SEXP subset(const SlicingIndex& index) const {
return impl->subset(index);
}
virtual SEXP subset(const std::vector<int>& index) const {
return impl->subset(index);
}
virtual SEXP subset(const ChunkIndexMap& index) const {
return impl->subset(index);
}
virtual SEXP subset(EmptySubset index) const {
return impl->subset(index);
}
virtual int size() const {
return impl->size();
}
virtual std::string get_r_type() const {
return impl->get_r_type();
}
bool is_compatible(SubsetVectorVisitor* other, std::stringstream&, const SymbolString&) const {
return is_same_typeid(other);
}
private:
SubsetVectorVisitor* impl;
DateSubsetVectorVisitor(const DateSubsetVectorVisitor&);
};
template <>
inline bool SubsetVectorVisitorImpl<INTSXP>::is_compatible(SubsetVectorVisitor* other, std::stringstream&,
const SymbolString&) const {
return is_same_typeid(other) || typeid(*other) == typeid(SubsetVectorVisitorImpl<REALSXP>);
}
template <>
inline bool SubsetVectorVisitorImpl<REALSXP>::is_compatible(SubsetVectorVisitor* other, std::stringstream&,
const SymbolString&) const {
return is_same_typeid(other) || typeid(*other) == typeid(SubsetVectorVisitorImpl<INTSXP>);
}
template <>
inline bool SubsetVectorVisitorImpl<STRSXP>::is_compatible(SubsetVectorVisitor* other, std::stringstream&,
const SymbolString&) const {
return is_same_typeid(other) || typeid(*other) == typeid(SubsetFactorVisitor);
}
}
#endif
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