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Implement nested block comments in the backend and in psql.

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Include updates for the comment.sql regression test.
Implement SET SESSION CHARACTERISTICS and SET DefaultXactIsoLevel.
Implement SET SESSION CHARACTERISTICS TRANSACTION COMMIT
 and SET AutoCommit in the parser only.
 Need to add code to actually do something.
Implement WITHOUT TIME ZONE type qualifier.
Define SCHEMA keyword, along with stubbed-out grammar.
Implement "[IN|INOUT|OUT] [varname] type" function arguments
 in parser only; INOUT and OUT throws an elog(ERROR).
Add PATH as a type-specific token, since PATH is in SQL99
 to support schema resource search and resolution.
This commit is contained in:
Thomas G. Lockhart
2000-07-14 15:43:57 +00:00
parent 1e901bbe84
commit be703cd9e8
10 changed files with 424 additions and 173 deletions
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22
src/backend/parser/scan.l
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.72 2000/06/14 18:17:37 petere Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.73 2000/07/14 15:43:32 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -72,6 +72,8 @@ static char *literalbuf; /* expandable buffer */
static int literallen; /* actual current length */
static int literalalloc; /* current allocated buffer size */
static int xcdepth = 0;
#define startlit() (literalbuf[0] = '\0', literallen = 0)
static void addlit(char *ytext, int yleng);
@@ -157,7 +159,7 @@ xdinside [^"]+
*/
xcstart \/\*{op_chars}*
xcstop \*+\/
xcinside ([^*]+)|(\*+[^/])
xcinside [^*/]+
digit [0-9]
letter [\200-\377_A-Za-z]
@@ -247,15 +249,29 @@ other .
{whitespace} { /* ignore */ }
{xcstart} {
xcdepth = 0;
BEGIN(xc);
/* Put back any characters past slash-star; see above */
yyless(2);
}
<xc>{xcstop} { BEGIN(INITIAL); }
<xc>{xcstart} {
xcdepth++;
/* Put back any characters past slash-star; see above */
yyless(2);
}
<xc>{xcstop} {
if (xcdepth <= 0)
BEGIN(INITIAL);
else
xcdepth--;
}
<xc>{xcinside} { /* ignore */ }
<xc>{op_chars} { /* ignore */ }
<xc><<EOF>> { elog(ERROR, "Unterminated /* comment"); }
{xbstart} {