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
|
#pragma once
#include <regex>
#include <string>
enum common_regex_match_type {
COMMON_REGEX_MATCH_TYPE_NONE,
COMMON_REGEX_MATCH_TYPE_PARTIAL,
COMMON_REGEX_MATCH_TYPE_FULL,
};
struct common_string_range {
size_t begin;
size_t end;
common_string_range(size_t begin, size_t end) : begin(begin), end(end) {
if (begin > end) {
throw std::runtime_error("Invalid range");
}
}
// prevent default ctor
common_string_range() = delete;
bool empty() const {
return begin == end;
}
bool operator==(const common_string_range & other) const {
return begin == other.begin && end == other.end;
}
};
struct common_regex_match {
common_regex_match_type type = COMMON_REGEX_MATCH_TYPE_NONE;
std::vector<common_string_range> groups;
bool operator==(const common_regex_match & other) const {
return type == other.type && groups == other.groups;
}
bool operator!=(const common_regex_match & other) const {
return !(*this == other);
}
};
class common_regex {
std::string pattern;
std::regex rx;
std::regex rx_reversed_partial;
public:
explicit common_regex(const std::string & pattern);
common_regex_match search(const std::string & input, size_t pos, bool as_match = false) const;
const std::string & str() const { return pattern; }
};
// For testing only (pretty print of failures).
std::string regex_to_reversed_partial_regex(const std::string & pattern);
|
