real::detail::lookaround_sub Struct Reference

A bounded lookaround sub-program, referenced by assert_lookaround's arg16. More...

Public Attributes
std::int32_t	code_offset {}
	First instruction of the sub-program in code.
std::int32_t	code_length {}
	Instruction count of the sub-program.
std::int32_t	l_max {}
	Max bytes the sub-pattern can consume (bounded).
look_dir	direction {look_dir::ahead}
	Ahead or behind.
bool	negative {}
	(?! / (?<! (negated assertion).

Detailed Description

A bounded lookaround sub-program, referenced by assert_lookaround's arg16.

The sub-pattern's bytecode lives as a region inside the main code buffer (appended after the main program), so it survives copy/move of dynamic_program with no stored pointers — the views are rebuilt on demand from these offsets. l_max bounds the bytes the sub can consume (unbounded sub-patterns are rejected at compile time): the source of the strict linear-time guarantee.

---

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

• include/real/core/program.hpp