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error_type

Synopsis

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
Description

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.


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