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
|
#ifndef RFL_PARSING_PARSER_STRING_VIEW_HPP_
#define RFL_PARSING_PARSER_STRING_VIEW_HPP_
#include <cstring>
#include <map>
#include <string>
#include <string_view>
#include <type_traits>
#include "../Result.hpp"
#include "../always_false.hpp"
#include "Parser_base.hpp"
#include "schema/Type.hpp"
namespace rfl {
namespace parsing {
template <class R, class W, class ProcessorsType>
requires AreReaderAndWriter<R, W, std::string_view>
struct Parser<R, W, std::string_view, ProcessorsType> {
using InputVarType = typename R::InputVarType;
static Result<std::string_view> read(const R& _r,
const InputVarType& _var) noexcept {
if constexpr (!ProcessorsType::allow_raw_ptrs_) {
static_assert(
always_false_v<R>,
"Reading into std::string_view is dangerous and "
"therefore unsupported. "
"Please consider using std::string instead or wrapping "
"std::string in rfl::Box or rfl::Ref."
"If you absolutely must use std::string_view, "
"you can pass the rfl::AllowRawPtrs processor. "
"Please note that it is then YOUR responsibility "
"to delete the allocated memory. Please also refer "
"to the related documentation (in the section on processors).");
return error("Unsupported.");
} else {
return Parser<R, W, std::string, ProcessorsType>::read(_r, _var)
.transform([](std::string&& str) {
char* data =
new char[str.size() + 1]; // +1 for the null terminator
std::memcpy(data, str.data(), str.size() + 1);
return std::string_view(data, str.size());
});
}
}
template <class P>
static void write(const W& _w, const std::string_view& _str,
const P& _p) noexcept {
Parser<R, W, std::string, ProcessorsType>::write(_w, std::string(_str), _p);
}
static schema::Type to_schema(
std::map<std::string, schema::Type>* _definitions) {
return Parser<R, W, std::string, ProcessorsType>::to_schema(_definitions);
}
};
} // namespace parsing
} // namespace rfl
#endif
|
