std::regex_constants::error_type
STD：：regex[医]常数：：错误[医]类型
| Defined in header | | |
|---|---|---|
| typedef /*implementation defined*/ error_type; | | (since C++11) |
| constexpr error_type error_collate = /*unspecified*/; constexpr error_type error_ctype = /*unspecified*/; constexpr error_type error_escape = /*unspecified*/; constexpr error_type error_backref = /*unspecified*/; constexpr error_type error_brack = /*unspecified*/; constexpr error_type error_paren = /*unspecified*/; constexpr error_type error_brace = /*unspecified*/; constexpr error_type error_badbrace = /*unspecified*/; constexpr error_type error_range = /*unspecified*/; constexpr error_type error_space = /*unspecified*/; constexpr error_type error_badrepeat = /*unspecified*/; constexpr error_type error_complexity = /*unspecified*/; constexpr error_type error_stack = /*unspecified*/; | | (since C++11) (until C++17) |
| inline constexpr error_type error_collate = /*unspecified*/; inline constexpr error_type error_ctype = /*unspecified*/; inline constexpr error_type error_escape = /*unspecified*/; inline constexpr error_type error_backref = /*unspecified*/; inline constexpr error_type error_brack = /*unspecified*/; inline constexpr error_type error_paren = /*unspecified*/; inline constexpr error_type error_brace = /*unspecified*/; inline constexpr error_type error_badbrace = /*unspecified*/; inline constexpr error_type error_range = /*unspecified*/; inline constexpr error_type error_space = /*unspecified*/; inline constexpr error_type error_badrepeat = /*unspecified*/; inline constexpr error_type error_complexity = /*unspecified*/; inline constexpr error_type error_stack = /*unspecified*/; | | (since C++17) |
大error_type描述正则表达式解析过程中可能发生的错误的类型。
常数
| Constant | Explanation |
|---|---|
| error_collate | the expression contains an invalid collating element name |
| error_ctype | the expression contains an invalid character class name |
| error_escape | the expression contains an invalid escaped character or a trailing escape |
| error_backref | the expression contains an invalid back reference |
| error_brack | the expression contains mismatched square brackets ('' and '') |
| error_paren | the expression contains mismatched parentheses ('(' and ')') |
| error_brace | the expression contains mismatched curly braces ('{' and '}') |
| error_badbrace | the expression contains an invalid range in a {} expression |
| error_range | the expression contains an invalid character range (e.g. b-a) |
| error_space | there was not enough memory to convert the expression into a finite state machine |
| error_badrepeat | one of *?+{ was not preceded by a valid regular expression |
| error_complexity | the complexity of an attempted match exceeded a predefined level |
| error_stack | there was not enough memory to perform a match |
注记
在C++11中，这些常量是用冗余关键字指定的。static，它被C++14通过lwg第2053期...
另见
| regex_error (C++11) | reports errors generated by the regular expressions library (class) |
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