Struct LikeMatcher 

pub struct LikeMatcher { /* private fields */ }

A compiled SQL LIKE pattern (07 §4 / filter.ts). % matches any byte run, _ matches exactly one byte. Compiled once (the builder lowers the literal pattern) and matched per row with a classic backtracking glob walk.

Collation / escape policy (WS05.1):

• \ escape is honoured, matching the SQL the builder emits (ESCAPE '\'): \%/\_/\\ are the literal %/_/\. So memory and SQLite agree for patterns that escape a wildcard.
• Case-sensitive LIKE is byte-level; the SQLite leaf sets PRAGMA case_sensitive_like = ON so its bare LIKE agrees (both case-sensitive).
• ILIKE folds ASCII-only (eq_ignore_ascii_case), which matches the bundled SQLite’s lower() (no ICU) — so memory and SQLite agree on ASCII. Non-ASCII case folding is a documented limitation (both leave non-ASCII bytes unfolded); revisit only if a corpus needs Unicode ILIKE.
• _ is byte-level, not UTF-8-character-level (a deferred edge for non-ASCII single-char matches; the byte glob structure is correct and tested).

Implementations

impl LikeMatcher

pub fn compile(pattern: &[u8]) -> LikeMatcher

Compile a LIKE pattern. Adjacent literal bytes coalesce into one Lit run; runs of % collapse to a single Any.

pub fn compile_case_insensitive(pattern: &[u8]) -> LikeMatcher

Compile a case-insensitive LIKE pattern (ILIKE).

pub fn matches(&self, text: &[u8]) -> bool

Match text against the compiled pattern. Backtracking glob: Any records a restart point so a later mismatch can re-anchor % one byte further.