error parsing default boolean value for Postgres

[Nate Reed]

The following statement generates a parsing error:

CREATE TABLE foo
(
id BIGINT NOT NULL UNIQUE PRIMARY KEY,
edit_locked BOOLEAN NOT NULL DEFAULT false,
PRIMARY KEY (id)
)

Caused by: net.sf.jsqlparser.parser.ParseException: Encountered
unexpected token: "true" "TRUE"

Looking for some guidance on how I can update the grammar for Psql, as
I'm unfamiliar with JavaCC.