Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Type error type represents the different types of errors that can be raised by the library when parsing a regular expression.
namespace boost{ namespace regex_constants{
typedef implementation-specific-type error_type;
static const error_type error_collate;
static const error_type error_ctype;
static const error_type error_escape;
static const error_type error_backref;
static const error_type error_brack;
static const error_type error_paren;
static const error_type error_brace;
static const error_type error_badbrace;
static const error_type error_range;
static const error_type error_space;
static const error_type error_badrepeat;
static const error_type error_complexity;
static const error_type error_stack;
static const error_type error_bad_pattern;
} // namespace regex_constants
} // namespace boost
The type error_type is an implementation-specific enumeration type that may take one of the following values:
| Constant | Meaning |
| error_collate | An invalid collating element was specified in a [[.name.]] block. |
| error_ctype | An invalid character class name was specified in a [[:name:]] block. |
| error_escape | An invalid or trailing escape was encountered. |
| error_backref | A back-reference to a non-existant marked sub-expression was encountered. |
| error_brack | An invalid character set [...] was encountered. |
| error_paren |
Mismatched '(' and ')'. |
| error_brace | Mismatched '{' and '}'. |
| error_badbrace | Invalid contents of a {...} block. |
| error_range | A character range was invalid, for example [d-a]. |
| error_space | Out of memory. |
| error_badrepeat | An attempt to repeat something that can not be repeated - for example a*+ |
| error_complexity | The expression became too complex to handle. |
| error_stack | Out of program stack space. |
| error_bad_pattern | Other unspecified errors. |
Revised 24 June 2004
© Copyright John Maddock 1998- 2004
Use, modification and distribution are subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)