Thread: pgsql: jsonpath scanner: reentrant scanner
jsonpath scanner: reentrant scanner Use the flex %option reentrant to make the generated scanner reentrant and thread-safe. Note: The parser was already pure. Simplify flex scan buffer management: Instead of constructing the buffer from pieces and then using yy_scan_buffer(), we can just use yy_scan_string(), which does the same thing internally. (Actually, we use yy_scan_bytes() here because we already have the length.) Use flex yyextra to handle context information, instead of global variables. This complements the other changes to make the scanner reentrant. Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi> Reviewed-by: Andreas Karlsson <andreas@proxel.se> Discussion: https://www.postgresql.org/message-id/flat/eb6faeac-2a8a-4b69-9189-c33c520e5b7b@eisentraut.org Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/2a7425d7eef9b4b848763fb920fefa23c3c43f31 Modified Files -------------- src/backend/nls.mk | 2 +- src/backend/utils/adt/jsonpath_gram.y | 2 + src/backend/utils/adt/jsonpath_internal.h | 12 +- src/backend/utils/adt/jsonpath_scan.l | 283 ++++++++++++++---------------- 4 files changed, 145 insertions(+), 154 deletions(-)