real::dfa_error Class Reference

Thrown when a pattern cannot be represented as a DFA. More...

#include <dfa.hpp>

Inheritance diagram for real::dfa_error:

Collaboration diagram for real::dfa_error:

Public Member Functions
	dfa_error (const std::string &message)
	Builds the error.

Detailed Description

Thrown when a pattern cannot be represented as a DFA.

Five causes: a zero-width assertion other than a leading \A/^ ($, \b, \B, multiline anchors), a lookaround, a possessive quantifier / atomic group, a code-point class whose UTF-8 expansion is too large (text-mode \w, or a class repeated many times; \d, \p{Greek} or [àé] build), or an automaton past the state cap (65 536 states). Never a silent fallback: the caller decides, e.g. by keeping that rule on the Pike VM.

Constructor & Destructor Documentation

dfa_error()

real::dfa_error::dfa_error ( const std::string &  message )

inlineexplicit

Builds the error.

Parameters

[in]

message

Human-readable cause.

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The documentation for this class was generated from the following file:

• include/real/dfa.hpp