frontend Directory Reference

Directory dependency graph for frontend:

Files
	ast.hpp
	Pattern text → AST, via a constexpr recursive-descent parser.
	compiler.hpp
	AST → NFA program, via Thompson construction.
	inner_literal.hpp
	Extracts a required inner literal from a pattern's AST — the substring that every match must contain ((\w+)@(\w+) -> @, key=(\w+) -> key=, \d{4}-\d{2} -> -). It is the memmem candidate an inner-literal prefilter scans for: find the literal, then confirm the surrounding pattern from that candidate. Pure over the node pool; inert — nothing routes on it yet.
	inner_literal_reverse.hpp
	The prefix-reverse of the inner-literal prefilter (INNER-LITERAL IL.1). Given a required inner literal found at a candidate position, reverse-match the pattern's PREFIX (everything before the literal) to recover the match start — the reverse-inner protocol. Reuses the engine's existing reverse machinery (build_byte_program() + reverse_dfa), just on the prefix sub-program. Inert: nothing routes on it yet (that is IL.2).