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
|
// cpp11 version: 0.3.1.1
// vendored on: 2021-08-11
#pragma once
#include <initializer_list> // for initializer_list
#include <string> // for string, basic_string
#include "cpp11/R.hpp" // for SEXP, TYPEOF, SEXPREC, SET_STRI...
#include "cpp11/as.hpp" // for as_sexp
#include "cpp11/attribute_proxy.hpp" // for attribute_proxy
#include "cpp11/named_arg.hpp" // for named_arg
#include "cpp11/protect.hpp" // for preserved
#include "cpp11/r_string.hpp" // for r_string
#include "cpp11/r_vector.hpp" // for r_vector, r_vector<>::proxy
#include "cpp11/sexp.hpp" // for sexp
// Specializations for strings
namespace cpp11 {
template <>
inline SEXP r_vector<r_string>::valid_type(SEXP data) {
if (TYPEOF(data) != STRSXP) {
throw type_error(STRSXP, TYPEOF(data));
}
return data;
}
template <>
inline r_string r_vector<r_string>::operator[](const R_xlen_t pos) const {
// NOPROTECT: likely too costly to unwind protect every elt
return STRING_ELT(data_, pos);
}
template <>
inline r_string* r_vector<r_string>::get_p(bool, SEXP) {
return nullptr;
}
template <>
inline void r_vector<r_string>::const_iterator::fill_buf(R_xlen_t) {
return;
}
template <>
inline r_string r_vector<r_string>::const_iterator::operator*() const {
return STRING_ELT(data_->data(), pos_);
}
typedef r_vector<r_string> strings;
namespace writable {
template <>
inline typename r_vector<r_string>::proxy& r_vector<r_string>::proxy::operator=(
const r_string& rhs) {
unwind_protect([&] { SET_STRING_ELT(data_, index_, rhs); });
return *this;
}
template <>
inline r_vector<r_string>::proxy::operator r_string() const {
// NOPROTECT: likely too costly to unwind protect every elt
return STRING_ELT(data_, index_);
}
inline bool operator==(const r_vector<r_string>::proxy& lhs, r_string rhs) {
return static_cast<r_string>(lhs).operator==(static_cast<std::string>(rhs).c_str());
}
inline SEXP alloc_or_copy(const SEXP data) {
switch (TYPEOF(data)) {
case CHARSXP:
return cpp11::r_vector<r_string>(safe[Rf_allocVector](STRSXP, 1));
case STRSXP:
return safe[Rf_shallow_duplicate](data);
default:
throw type_error(STRSXP, TYPEOF(data));
}
}
inline SEXP alloc_if_charsxp(const SEXP data) {
switch (TYPEOF(data)) {
case CHARSXP:
return cpp11::r_vector<r_string>(safe[Rf_allocVector](STRSXP, 1));
case STRSXP:
return data;
default:
throw type_error(STRSXP, TYPEOF(data));
}
}
template <>
inline r_vector<r_string>::r_vector(const SEXP& data)
: cpp11::r_vector<r_string>(alloc_or_copy(data)),
protect_(preserved.insert(data_)),
capacity_(length_) {
if (TYPEOF(data) == CHARSXP) {
SET_STRING_ELT(data_, 0, data);
}
}
template <>
inline r_vector<r_string>::r_vector(SEXP&& data)
: cpp11::r_vector<r_string>(alloc_if_charsxp(data)),
protect_(preserved.insert(data_)),
capacity_(length_) {
if (TYPEOF(data) == CHARSXP) {
SET_STRING_ELT(data_, 0, data);
}
}
template <>
inline r_vector<r_string>::r_vector(std::initializer_list<r_string> il)
: cpp11::r_vector<r_string>(as_sexp(il)), capacity_(il.size()) {}
template <>
inline r_vector<r_string>::r_vector(std::initializer_list<const char*> il)
: cpp11::r_vector<r_string>(as_sexp(il)), capacity_(il.size()) {}
template <>
inline r_vector<r_string>::r_vector(std::initializer_list<std::string> il)
: cpp11::r_vector<r_string>(as_sexp(il)), capacity_(il.size()) {}
template <>
inline r_vector<r_string>::r_vector(std::initializer_list<named_arg> il)
: cpp11::r_vector<r_string>(safe[Rf_allocVector](STRSXP, il.size())),
capacity_(il.size()) {
protect_ = preserved.insert(data_);
int n_protected = 0;
try {
unwind_protect([&] {
Rf_setAttrib(data_, R_NamesSymbol, Rf_allocVector(STRSXP, capacity_));
SEXP names = PROTECT(Rf_getAttrib(data_, R_NamesSymbol));
++n_protected;
auto it = il.begin();
for (R_xlen_t i = 0; i < capacity_; ++i, ++it) {
SET_STRING_ELT(data_, i, STRING_ELT(it->value(), 0));
SET_STRING_ELT(names, i, Rf_mkCharCE(it->name(), CE_UTF8));
}
UNPROTECT(n_protected);
});
} catch (const unwind_exception& e) {
preserved.release(protect_);
UNPROTECT(n_protected);
throw e;
}
}
template <>
inline void r_vector<r_string>::reserve(R_xlen_t new_capacity) {
data_ = data_ == R_NilValue ? safe[Rf_allocVector](STRSXP, new_capacity)
: safe[Rf_xlengthgets](data_, new_capacity);
SEXP old_protect = protect_;
protect_ = preserved.insert(data_);
preserved.release(old_protect);
capacity_ = new_capacity;
}
template <>
inline void r_vector<r_string>::push_back(r_string value) {
while (length_ >= capacity_) {
reserve(capacity_ == 0 ? 1 : capacity_ *= 2);
}
unwind_protect([&] { SET_STRING_ELT(data_, length_, value); });
++length_;
}
typedef r_vector<r_string> strings;
template <typename T>
inline void r_vector<T>::push_back(const named_arg& value) {
push_back(value.value());
if (Rf_xlength(names()) == 0) {
cpp11::writable::strings new_nms(size());
names() = new_nms;
}
cpp11::writable::strings nms(names());
nms[size() - 1] = value.name();
}
} // namespace writable
} // namespace cpp11
|
