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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/tcop/tcopprot.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: tcopprot.h,v 1.47 2001/11/10 23:51:14 tgl Exp $
* $Id: tcopprot.h,v 1.48 2002/04/20 21:56:15 petere Exp $
*
* OLD COMMENTS
* This file was created so that other c files could get the two
@@ -22,6 +22,7 @@
#include <setjmp.h>
#include "executor/execdesc.h"
#include "lib/stringinfo.h"
#include "tcop/dest.h"
@@ -37,7 +38,7 @@ extern bool ShowPortNumber;
extern List *pg_parse_and_rewrite(char *query_string,
Oid *typev, int nargs);
extern Plan *pg_plan_query(Query *querytree);
extern void pg_exec_query_string(char *query_string,
extern void pg_exec_query_string(StringInfo query_string,
CommandDest dest,
MemoryContext parse_context);
#endif /* BOOTSTRAP_INCLUDE */