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// cpp11 version: 0.3.1.1
// vendored on: 2021-08-11
#pragma once
#include <algorithm> // for min
#include <array> // for array
#include <cstdint> // for uint8_t
#include <initializer_list> // for initializer_list
#include "cpp11/R.hpp" // for RAW, SEXP, SEXPREC, Rf_allocVector
#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_vector.hpp" // for r_vector, r_vector<>::proxy
#include "cpp11/sexp.hpp" // for sexp
// Specializations for raws
namespace cpp11 {
template <>
inline SEXP r_vector<uint8_t>::valid_type(SEXP data) {
if (TYPEOF(data) != RAWSXP) {
throw type_error(RAWSXP, TYPEOF(data));
}
return data;
}
template <>
inline uint8_t r_vector<uint8_t>::operator[](const R_xlen_t pos) const {
// NOPROTECT: likely too costly to unwind protect every elt
return is_altrep_ ? RAW_ELT(data_, pos) : data_p_[pos];
}
template <>
inline uint8_t* r_vector<uint8_t>::get_p(bool is_altrep, SEXP data) {
if (is_altrep) {
return nullptr;
} else {
return reinterpret_cast<uint8_t*>(RAW(data));
}
}
template <>
inline void r_vector<uint8_t>::const_iterator::fill_buf(R_xlen_t pos) {
using namespace cpp11::literals;
length_ = std::min(64_xl, data_->size() - pos);
unwind_protect(
[&] { RAW_GET_REGION(data_->data_, pos, length_, (uint8_t*)buf_.data()); });
block_start_ = pos;
}
typedef r_vector<uint8_t> raws;
namespace writable {
template <>
inline typename r_vector<uint8_t>::proxy& r_vector<uint8_t>::proxy::operator=(
const uint8_t& rhs) {
if (is_altrep_) {
// NOPROTECT: likely too costly to unwind protect every set elt
RAW(data_)[index_] = rhs;
} else {
*p_ = rhs;
}
return *this;
}
template <>
inline r_vector<uint8_t>::proxy::operator uint8_t() const {
if (p_ == nullptr) {
// NOPROTECT: likely too costly to unwind protect every elt
return RAW(data_)[index_];
} else {
return *p_;
}
}
template <>
inline r_vector<uint8_t>::r_vector(std::initializer_list<uint8_t> il)
: cpp11::r_vector<uint8_t>(safe[Rf_allocVector](RAWSXP, il.size())),
capacity_(il.size()) {
protect_ = preserved.insert(data_);
auto it = il.begin();
for (R_xlen_t i = 0; i < capacity_; ++i, ++it) {
data_p_[i] = *it;
}
}
template <>
inline r_vector<uint8_t>::r_vector(std::initializer_list<named_arg> il)
: cpp11::r_vector<uint8_t>(safe[Rf_allocVector](RAWSXP, 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) {
data_p_[i] = RAW_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<uint8_t>::reserve(R_xlen_t new_capacity) {
data_ = data_ == R_NilValue ? safe[Rf_allocVector](RAWSXP, new_capacity)
: safe[Rf_xlengthgets](data_, new_capacity);
SEXP old_protect = protect_;
protect_ = preserved.insert(data_);
preserved.release(old_protect);
data_p_ = reinterpret_cast<uint8_t*>(RAW(data_));
capacity_ = new_capacity;
}
template <>
inline void r_vector<uint8_t>::push_back(uint8_t value) {
while (length_ >= capacity_) {
reserve(capacity_ == 0 ? 1 : capacity_ *= 2);
}
if (is_altrep_) {
// NOPROTECT: likely too costly to unwind protect every elt
RAW(data_)[length_] = value;
} else {
data_p_[length_] = value;
}
++length_;
}
typedef r_vector<uint8_t> raws;
} // namespace writable
} // namespace cpp11
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