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Scanner performance improvements

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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().
This commit is contained in:
Peter Eisentraut
2002-04-20 21:56:15 +00:00
parent ff4281472a
commit 32c6c99e0b
8 changed files with 144 additions and 155 deletions
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5
src/include/parser/parser.h
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@ -7,15 +7,16 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: parser.h,v 1.11 2001/11/05 17:46:35 momjian Exp $
* $Id: parser.h,v 1.12 2002/04/20 21:56:15 petere Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef PARSER_H
#define PARSER_H
#include "lib/stringinfo.h"
#include "parser/parse_node.h"
extern List *parser(char *str, Oid *typev, int nargs);
extern List *parser(StringInfo str, Oid *typev, int nargs);
#endif /* PARSER_H */