Scanner performance improvements
Peter Eisentraut <peter_e@gmx.net>
Scanner performance improvements Use flex flags -CF. Pass the to-be-scanned string around as StringInfo type, to avoid querying the length repeatedly. Clean up some code and remove lex-compatibility cruft. Escape backslash sequences inline. Use flex-provided yy_scan_buffer() function to set up input, rather than using myinput().
Files
| Path | Change | +/− |
|---|---|---|
| src/backend/parser/Makefile | modified | +4 −12 |
| src/backend/parser/parser.c | modified | +4 −14 |
| src/backend/parser/parse_type.c | modified | +6 −6 |
| src/backend/parser/scan.l | modified | +105 −107 |
| src/backend/tcop/postgres.c | modified | +14 −10 |
| src/include/parser/gramparse.h | modified | +5 −2 |
| src/include/parser/parser.h | modified | +3 −2 |
| src/include/tcop/tcopprot.h | modified | +3 −2 |