47. Recognition in Generated Parsers

• Generated parsers had no recognition mode. pego gen -recognize (Recognize in gen.Go and gen.TypeScript) now also generates the recognizer (Program.Recognizer, the program in which no rule builds a value) into a second rule table, behind Recognize(input) error. The generator follows the engine there: captures that no predicate reads are not recorded, and Operators Rule lines of rules without a value build nothing (the generated runtime's lineResult and operatorsRuleBuild now check novalue, as the engine's do).
• Effect (min of 3 runs, Apple M3 Max): JSON 4.9 ms against 8.8 ms for Parse and 8.6 ms for the closure backend's recognition; CSV 1.8 ms (Parse 4.0 ms), XML 7.3 ms (8.9 ms), Outline 1.7 ms (3.9 ms). The parity test checks that Recognize returns the errors of the engine's recognition on every corpus input.