std::regex_token_iterator::regex_token_iterator
regex_token_iterator(); | (1) | (since C++11) |
|---|---|---|
regex_token_iterator( BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, int submatch = 0, std::regex_constants::match_flag_type m = std::regex_constants::match_default ); | (2) | (since C++11) |
regex_token_iterator( BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, const std::vector<int>& submatches, std::regex_constants::match_flag_type m = std::regex_constants::match_default ); | (3) | (since C++11) |
regex_token_iterator( BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, std::initializer_list<int> submatches, std::regex_constants::match_flag_type m = std::regex_constants::match_default ); | (4) | (since C++11) |
template <std::size_t N> regex_token_iterator( BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, const int (&submatches)N, std::regex_constants::match_flag_type m = std::regex_constants::match_default ); | (5) | (since C++11) |
regex_token_iterator( const regex_token_iterator& other ); | (6) | (since C++11) |
regex_token_iterator( BidirectionalIterator a, BidirectionalIterator b, const regex_type&& re, int submatch = 0, std::regex_constants::match_flag_type m = std::regex_constants::match_default ) = delete; | (7) | (since C++14) |
regex_token_iterator( BidirectionalIterator a, BidirectionalIterator b, const regex_type&& re, const std::vector<int>& submatches, std::regex_constants::match_flag_type m = std::regex_constants::match_default ) = delete; | (8) | (since C++14) |
regex_token_iterator( BidirectionalIterator a, BidirectionalIterator b, const regex_type&& re, std::initializer_list<int> submatches, std::regex_constants::match_flag_type m = std::regex_constants::match_default ) = delete; | (9) | (since C++14) |
template <std::size_t N> regex_token_iterator( BidirectionalIterator a, BidirectionalIterator b, const regex_type&& re, const int (&submatches)N, std::regex_constants::match_flag_type m = std::regex_constants::match_default ) = delete; | (10) | (since C++14) |
构造一个新的regex_token_iterator*
1%29默认构造函数。构造序列结束迭代器。
2-5%29首先，将所请求的子匹配的列表从submatches或submatch参数存储在迭代器中的成员列表中，并构造成员。std::regex_iterator通过a，，，b，，，re，和m对于其四个参数构造函数%28，该构造函数执行对std::regex_search%29并将子匹配的内部计数器设置为零。
- 如果，在建造后，成员
regex_iterator不是序列结束迭代器，而是设置指向当前地址的成员指针。std::sub_match...
- 否则，%28如果成员
regex_iterator是序列结束迭代器%29，但是值-1中的值之一。submatches/submatch转*this变成后缀迭代器指向射程[a,b)%28整个字符串是不匹配的后缀%29。
- 否则，%28 if-1不在子匹配%29的列表中，将
*this进入序列结束迭代器。
中的任何值时，该行为都是未定义的。submatches小于-1...
6%29复制构造函数：执行按成员顺序复制%28，包括创建成员的副本regex_iterator和指向当前的成员指针。sub_match29%。
7-10%29禁止使用临时正则表达式调用重载2-5，否则返回的迭代器将立即失效。
参数
a | - | BidirectionalIterator to the beginning of the target character sequence |
|---|---|---|
b | - | BidirectionalIterator to the end of the target character sequence |
re | - | regular expression used to search the target character sequence |
submatch | - | the index of the submatch that should be returned. "0" represents the entire match, and "-1" represents the parts that are not matched (e.g, the stuff between matches). |
submatches | - | the sequence of submatch indices that should be iterated over within each match, may include the special value -1 for the non-matched fragments |
m | - | flags that govern the behavior of re |
例
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