tiny.reducer.InterestingFn

1/// Type of the caller's oracle function pointer.2///3/// ## Calling Convention and Contract4///5/// - **Candidate slice:** on attempt 1 the callback receives the caller's own6///   `initial` slice, before any copy. On every later attempt it receives a7///   slice into the scratch lane, and the next iteration overwrites those8///   bytes, so the callback retains no slice into a candidate buffer past its9///   return.10/// - **Context pointer:** the caller keeps the context alive for the whole11///   synchronous call of `reduce()`, and the cast `@ptrCast(@alignCast(ctx))`12///   matches the real type and alignment of what the pointer points at.13/// - **Answers and errors:** the callback answers interesting for the specific14///   failure or symptom under investigation and uninteresting for everything15///   else, which covers a candidate that fails to parse, holds invalid UTF-8,16///   or hits an unrelated error. Returning a Zig error ends the run at once.17/// - **Side effects and determinism:** a side effect such as logging or the18///   callback's own scratch allocation is allowed as long as the answer for a19///   given candidate stays the same. The minimality claims rest on an oracle20///   that is deterministic and decides from the candidate's content alone,21///   which is an assumption about the caller's code.22pub const InterestingFn = *const fn ([]const u8, *anyopaque) anyerror!Interesting;

1/// Type of the caller's oracle function pointer.2pub const InterestingFn = bytes.InterestingFn;