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.

Its code is a region of the main code buffer, addressed by offset so a copy or move of dynamic_program stores no pointer. l_max bounds what the sub consumes (unbounded ones are rejected at compile time), which keeps the search linear.

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

• include/real/core/program.hpp