These files are the grammar, tokenizer and keyword table meyer is a port of, kept here so that the parse.y rule named in a parser comment can be read without a SQLite checkout. No tool processes them: no parser generator runs and no build step reads them, and the directory deliberately contains no Go file, so it is not a package and ./... does not reach it.

Two tests do read them, to check transcriptions that would otherwise only ever be verified by hand:

• token's tests rebuild the keyword table and the %fallback set from mkkeywordhash.c and parse.y and compare them with meyer's, resolved for the pinned build's feature flags.
• parser's tests check that every nonterminal in parse.y is named by a comment somewhere in the parser, which is how the repository's "every nontrivial parse function names its rule" rule is enforced.

Advancing the pin therefore surfaces a grammar or keyword change as a test failure rather than as a silent divergence.

Both come from SQLite 3.53.4, the release pinned in cmd/regenerate-parse/main.go and recorded in parser/testdata/README.md. When the pin advances, replace them.

SQLite's source code is in the public domain. The authors' statement, reproduced from the header of these files:

The author disclaims copyright to this source code. In place of a legal notice, here is a blessing:

May you do good and not evil. May you find forgiveness for yourself and forgive others. May you share freely, never taking more than you give.