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Reenabled parentheses for grouping multiple rule actions and

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added this syntax to rules regression test so it will show up
if someone breaks it again.

Jan
This commit is contained in:
Jan Wieck
1999-02-07 19:02:20 +00:00
parent ef590e101e
commit 28fc5d7b83
3 changed files with 34 additions and 37 deletions
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45
src/backend/parser/gram.y
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@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.52 1999/02/06 20:27:34 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.53 1999/02/07 19:02:19 wieck Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -132,7 +132,7 @@ Oid param_type(int t); /* used in parse_expr.c */
CreatedbStmt, DestroydbStmt, VacuumStmt, CursorStmt, SubSelect,
UpdateStmt, InsertStmt, select_w_o_sort, SelectStmt, NotifyStmt, DeleteStmt,
ClusterStmt, ExplainStmt, VariableSetStmt, VariableShowStmt, VariableResetStmt,
CreateUserStmt, AlterUserStmt, DropUserStmt
CreateUserStmt, AlterUserStmt, DropUserStmt, RuleActionStmt
%type <str> opt_database1, opt_database2, location, encoding
@ -163,7 +163,7 @@ Oid param_type(int t); /* used in parse_expr.c */
result, relation_name_list, OptTableElementList,
OptInherit, definition,
opt_with, func_args, func_args_list,
oper_argtypes, OptStmtList, OptStmtBlock, OptStmtMulti,
oper_argtypes, RuleActionList, RuleActionBlock, RuleActionMulti,
opt_column_list, columnList, opt_va_list, va_list,
sort_clause, sortby_list, index_params, index_list, name_list,
from_clause, from_list, opt_array_bounds, nest_array_bounds,
@ -2058,7 +2058,7 @@ opt_column: COLUMN { $$ = COLUMN; }
RuleStmt: CREATE RULE name AS
{ QueryIsRule=TRUE; }
ON event TO event_object where_clause
DO opt_instead OptStmtList
DO opt_instead RuleActionList
{
RuleStmt *n = makeNode(RuleStmt);
n->rulename = $3;
@ -2071,34 +2071,31 @@ RuleStmt: CREATE RULE name AS
}
;
OptStmtList: NOTHING { $$ = NIL; }
| OptimizableStmt { $$ = lcons($1, NIL); }
| '[' OptStmtBlock ']' { $$ = $2; }
/***S*I*D***/
/* We comment this out because it produces a shift / reduce conflict
* with the select_w_o_sort rule */
/* | '(' OptStmtBlock ')' { $$ = $2; } */
RuleActionList: NOTHING { $$ = NIL; }
| SelectStmt { $$ = lcons($1, NIL); }
| RuleActionStmt { $$ = lcons($1, NIL); }
| '[' RuleActionBlock ']' { $$ = $2; }
| '(' RuleActionBlock ')' { $$ = $2; }
;
OptStmtBlock: OptStmtMulti
{ $$ = $1; }
| OptimizableStmt
{ $$ = lcons($1, NIL); }
RuleActionBlock: RuleActionMulti { $$ = $1; }
| RuleActionStmt { $$ = lcons($1, NIL); }
;
OptStmtMulti: OptStmtMulti OptimizableStmt ';'
RuleActionMulti: RuleActionMulti RuleActionStmt
{ $$ = lappend($1, $2); }
/***S*I***/
/* We comment the next rule because it seems to be redundant
* and produces 16 shift/reduce conflicts with the new SelectStmt rule
* needed for EXCEPT and INTERSECT. So far I did not notice any
* violations by removing the rule! */
/* | OptStmtMulti OptimizableStmt
{ $$ = lappend($1, $2); } */
| OptimizableStmt ';'
| RuleActionMulti RuleActionStmt ';'
{ $$ = lappend($1, $2); }
| RuleActionStmt ';'
{ $$ = lcons($1, NIL); }
;
RuleActionStmt: InsertStmt
| UpdateStmt
| DeleteStmt
| NotifyStmt
;
event_object: relation_name '.' attr_name
{
$$ = makeNode(Attr);