From 0c001f080b567128e61dac7f2d6c619c55fc33be Mon Sep 17 00:00:00 2001
From: "Vadim B. Mikheev" <vadim4o@yahoo.com>
Date: Wed, 20 Aug 1997 01:50:06 +0000
Subject: [PATCH] CHECK/DEFAULT syntax (some tricks to get current scan
position).
---
src/backend/parser/scan.l | 27 ++++++++++++++++++---------
1 file changed, 18 insertions(+), 9 deletions(-)
diff --git a/src/backend/parser/scan.l b/src/backend/parser/scan.l
index ae4200081a8..841053694a5 100644
--- a/src/backend/parser/scan.l
+++ b/src/backend/parser/scan.l
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.13 1997/06/29 17:29:14 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.14 1997/08/20 01:50:06 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -36,6 +36,10 @@
extern char *parseString;
extern char *parseCh;
+int CurScanPosition(void);
+int DefaultStartPosition;
+int CheckStartPosition;
+
/* some versions of lex define this as a macro */
#if defined(yywrap)
#undef yywrap
@@ -173,6 +177,10 @@ other .
keyword = ScanKeywordLookup((char*)yytext);
if (keyword != NULL) {
+ if ( keyword->value == DEFAULT )
+ DefaultStartPosition = CurScanPosition () + yyleng + 1;
+ else if ( keyword->value == CHECK )
+ CheckStartPosition = CurScanPosition () + yyleng + 1;
return (keyword->value);
} else {
yylval.str = pstrdup((char*)yytext);
@@ -240,6 +248,12 @@ unput(char c)
*--parseCh = c;
}
}
+
+int
+CurScanPosition(void)
+{
+ return (parseCh - parseString - yyleng - 1);
+}
#endif /* !defined(FLEX_SCANNER) */
#ifdef FLEX_SCANNER
@@ -265,16 +279,11 @@ myinput(char* buf, int max)
}
}
-#ifdef NOT_USED
-char*
-CurScan(void)
+int
+CurScanPosition(void)
{
-/*
- return (InputFrag ? InputFrag : parseCh) +
- (yy_c_buf_p - &yy_current_buffer->yy_ch_buf[yy_n_chars]);
-*/
+ return (yy_c_buf_p - yy_current_buffer->yy_ch_buf - yyleng);
}
-#endif
#endif /* FLEX_SCANNER */
--
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