real::detail::lookaround_scratch::behind_walk Struct Reference

One lookbehind's forward walk over the subject: its threads parked at at, and whether a match of the sub-pattern ends there. More...

#include <pike.hpp>

Collaboration diagram for real::detail::lookaround_scratch::behind_walk:

Public Attributes
const char *	text {nullptr}
	The subject walked (data pointer); another subject restarts.
std::size_t	size {0}
	The subject's length.
std::size_t	at {npos}
	Where the threads are parked; npos before the first query.
bool	holds {false}
	A match of the sub-pattern ends exactly at at.
thread_list	threads
	The sub-pattern's threads parked at at.

Detailed Description

One lookbehind's forward walk over the subject: its threads parked at at, and whether a match of the sub-pattern ends there.

The walk starts a thread at every position, so its threads at at hold every partial match that could still end later. Queried at increasing positions, it advances: each byte is stepped once per search, not once per candidate start.

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

• include/real/engine/pike.hpp