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Commit3d56495

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committed
Improve rule action ordering in gram.y, more cleanups.
1 parente25f9e4 commit3d56495

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1 file changed

+50
-75
lines changed

1 file changed

+50
-75
lines changed

‎src/backend/parser/gram.y

Lines changed: 50 additions & 75 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
%{
1+
%{
22

33
/*#define YYDEBUG 1*/
44
/*-------------------------------------------------------------------------
@@ -11,7 +11,7 @@
1111
*
1212
*
1313
* IDENTIFICATION
14-
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.327 2002/06/17 20:38:04 momjian Exp $
14+
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.328 2002/06/18 00:28:11 momjian Exp $
1515
*
1616
* HISTORY
1717
* AUTHORDATEMAJOR EVENT
@@ -659,14 +659,8 @@ OptUserElem:
659659
}
660660
;
661661

662-
user_list:user_list','UserId
663-
{
664-
$$ = lappend($1, makeString($3));
665-
}
666-
|UserId
667-
{
668-
$$ = makeList1(makeString($1));
669-
}
662+
user_list:user_list','UserId{$$ = lappend($1, makeString($3)); }
663+
|UserId{$$ = makeList1(makeString($1)); }
670664
;
671665

672666

@@ -913,8 +907,7 @@ var_list_or_default:
913907
|DEFAULT{$$ = NIL; }
914908
;
915909

916-
var_list:
917-
var_value{$$ = makeList1($1); }
910+
var_list:var_value{$$ = makeList1($1); }
918911
|var_list','var_value{$$ = lappend($1,$3); }
919912
;
920913

@@ -1654,8 +1647,9 @@ opt_column_list:
16541647
|/*EMPTY*/{$$ = NIL; }
16551648
;
16561649

1657-
columnList:columnList','columnElem{$$ = lappend($1,$3); }
1658-
|columnElem{$$ = makeList1($1); }
1650+
columnList:
1651+
columnElem{$$ = makeList1($1); }
1652+
|columnList','columnElem{$$ = lappend($1,$3); }
16591653
;
16601654

16611655
columnElem:ColId
@@ -1742,8 +1736,8 @@ OptCreateAs:
17421736
;
17431737

17441738
CreateAsList:
1745-
CreateAsList','CreateAsElement{$$ =lappend($1,$3); }
1746-
|CreateAsElement{$$ =makeList1($1); }
1739+
CreateAsElement{$$ =makeList1($1); }
1740+
|CreateAsList','CreateAsElement{$$ =lappend($1,$3); }
17471741
;
17481742

17491743
CreateAsElement:
@@ -2015,8 +2009,7 @@ TriggerForType:
20152009

20162010
TriggerFuncArgs:
20172011
TriggerFuncArg{$$ = makeList1($1); }
2018-
|TriggerFuncArgs','TriggerFuncArg
2019-
{$$ = lappend($1,$3); }
2012+
|TriggerFuncArgs','TriggerFuncArg{$$ = lappend($1,$3); }
20202013
|/*EMPTY*/{$$ = NIL; }
20212014
;
20222015

@@ -2169,7 +2162,7 @@ DefineStmt:
21692162
definition:'('def_list')'{$$ =$2; }
21702163
;
21712164

2172-
def_list:def_elem{$$ = makeList1($1); }
2165+
def_list:def_elem{$$ = makeList1($1); }
21732166
|def_list','def_elem{$$ = lappend($1,$3); }
21742167
;
21752168

@@ -2659,10 +2652,9 @@ opt_revoke_grant_option:
26592652

26602653

26612654
function_with_argtypes_list:
2662-
function_with_argtypes
2663-
{$$ = makeList1($1); }
2655+
function_with_argtypes{$$ = makeList1($1); }
26642656
|function_with_argtypes_list','function_with_argtypes
2665-
{$$ = lappend($1,$3); }
2657+
{$$ = lappend($1,$3); }
26662658
;
26672659

26682660
function_with_argtypes:
@@ -2700,23 +2692,23 @@ IndexStmt:CREATE index_opt_unique INDEX index_name ON qualified_name
27002692
;
27012693

27022694
index_opt_unique:
2703-
UNIQUE{$$ =TRUE; }
2704-
|/*EMPTY*/{$$ =FALSE; }
2695+
UNIQUE{$$ =TRUE; }
2696+
|/*EMPTY*/{$$ =FALSE; }
27052697
;
27062698

27072699
access_method_clause:
2708-
USINGaccess_method{$$ =$2; }
2700+
USINGaccess_method{$$ =$2; }
27092701
/* If btree changes as our default, update pg_get_indexdef()*/
2710-
|/*EMPTY*/{$$ = DEFAULT_INDEX_TYPE; }
2702+
|/*EMPTY*/{$$ = DEFAULT_INDEX_TYPE; }
27112703
;
27122704

27132705
index_params:
2714-
index_list{$$ =$1; }
2715-
|func_index{$$ = makeList1($1); }
2706+
index_list{$$ =$1; }
2707+
|func_index{$$ = makeList1($1); }
27162708
;
27172709

2718-
index_list:index_list','index_elem{$$ =lappend($1,$3); }
2719-
|index_elem{$$ =makeList1($1); }
2710+
index_list:index_elem{$$ =makeList1($1); }
2711+
|index_list','index_elem{$$ =lappend($1,$3); }
27202712
;
27212713

27222714
func_index:func_name'('name_list')'opt_class
@@ -2770,8 +2762,8 @@ opt_class:any_name
27702762
else
27712763
$$ =$1;
27722764
}
2773-
|USINGany_name{$$ =$2; }
2774-
|/*EMPTY*/{$$ = NIL; }
2765+
|USINGany_name{$$ =$2; }
2766+
|/*EMPTY*/{$$ = NIL; }
27752767
;
27762768

27772769
/*****************************************************************************
@@ -2882,9 +2874,10 @@ func_type:Typename{ $$ = $1; }
28822874

28832875

28842876
createfunc_opt_list:
2885-
createfunc_opt_item{$$ = makeList1($1); }
2886-
|createfunc_opt_listcreatefunc_opt_item {$$ = lappend($1,$2); }
2887-
;
2877+
/* Must be at least one to prevent conflict*/
2878+
createfunc_opt_item {$$ = makeList1($1); }
2879+
|createfunc_opt_listcreatefunc_opt_item {$$ = lappend($1,$2); }
2880+
;
28882881

28892882
createfunc_opt_item:
28902883
ASfunc_as
@@ -3389,21 +3382,11 @@ CreatedbStmt:
33893382
}
33903383
$$ = (Node *)n;
33913384
}
3392-
|CREATEDATABASEdatabase_name
3393-
{
3394-
CreatedbStmt *n = makeNode(CreatedbStmt);
3395-
n->dbname =$3;
3396-
n->dbowner =NULL;
3397-
n->dbpath =NULL;
3398-
n->dbtemplate =NULL;
3399-
n->encoding = -1;
3400-
$$ = (Node *)n;
3401-
}
34023385
;
34033386

34043387
createdb_opt_list:
3405-
createdb_opt_item{$$ =makeList1($1); }
3406-
|createdb_opt_listcreatedb_opt_item{$$ =lappend($1,$2); }
3388+
createdb_opt_listcreatedb_opt_item{$$ =lappend($1,$2); }
3389+
|/* EMPTY*/{$$ =NIL; }
34073390
;
34083391

34093392
/*
@@ -3756,8 +3739,8 @@ insert_rest:
37563739
;
37573740

37583741
insert_column_list:
3759-
insert_column_list','insert_column_item{$$ =lappend($1,$3); }
3760-
|insert_column_item{$$ =makeList1($1); }
3742+
insert_column_item{$$ =makeList1($1); }
3743+
|insert_column_list','insert_column_item{$$ =lappend($1,$3); }
37613744
;
37623745

37633746
insert_column_item:
@@ -4226,8 +4209,9 @@ from_clause:
42264209
|/*EMPTY*/{$$ = NIL; }
42274210
;
42284211

4229-
from_list:from_list','table_ref{$$ = lappend($1,$3); }
4230-
|table_ref{$$ = makeList1($1); }
4212+
from_list:
4213+
table_ref{$$ = makeList1($1); }
4214+
|from_list','table_ref{$$ = lappend($1,$3); }
42314215
;
42324216

42334217
/*
@@ -4993,20 +4977,11 @@ row_expr:'(' row_descriptor ')' IN_P select_with_parens
49934977
;
49944978

49954979
row_descriptor:
4996-
row_list','a_expr
4997-
{
4998-
$$ = lappend($1,$3);
4999-
}
4980+
row_list','a_expr{$$ = lappend($1,$3); }
50004981
;
50014982

5002-
row_list:row_list','a_expr
5003-
{
5004-
$$ = lappend($1,$3);
5005-
}
5006-
|a_expr
5007-
{
5008-
$$ = makeList1($1);
5009-
}
4983+
row_list:a_expr {$$ = makeList1($1); }
4984+
|row_list','a_expr{$$ = lappend($1,$3); }
50104985
;
50114986

50124987
sub_type:ANY{$$ = ANY_SUBLINK; }
@@ -5030,12 +5005,12 @@ MathOp: '+'{ $$ = "+"; }
50305005
;
50315006

50325007
qual_Op:Op{$$ = makeList1(makeString($1)); }
5033-
|OPERATOR'('any_operator')'{$$ =$3; }
5008+
|OPERATOR'('any_operator')'{$$ =$3; }
50345009
;
50355010

50365011
qual_all_Op:
50375012
all_Op{$$ = makeList1(makeString($1)); }
5038-
|OPERATOR'('any_operator')'{$$ =$3; }
5013+
|OPERATOR'('any_operator')'{$$ =$3; }
50395014
;
50405015

50415016
/*
@@ -5445,8 +5420,7 @@ c_expr:columnref{ $$ = (Node *) $1; }
54455420
n->indirection =$3;
54465421
$$ = (Node *)n;
54475422
}
5448-
|'('a_expr')'
5449-
{$$ =$2; }
5423+
|'('a_expr')'{$$ =$2; }
54505424
|'('a_expr')'attrsopt_indirection
54515425
{
54525426
ExprFieldSelect *n = makeNode(ExprFieldSelect);
@@ -6056,8 +6030,9 @@ case_expr:CASE case_arg when_clause_list case_default END_TRANS
60566030
;
60576031

60586032
when_clause_list:
6059-
when_clause_listwhen_clause{$$ = lappend($1,$2); }
6060-
|when_clause{$$ = makeList1($1); }
6033+
/* There must be at least one*/
6034+
when_clause{$$ = makeList1($1); }
6035+
|when_clause_listwhen_clause{$$ = lappend($1,$2); }
60616036
;
60626037

60636038
when_clause:
@@ -6117,8 +6092,8 @@ attrs:'.' attr_name{ $$ = makeList1(makeString($2)); }
61176092
/* Target lists as found in SELECT ... and INSERT VALUES ( ... )*/
61186093

61196094
target_list:
6120-
target_list','target_el{$$ =lappend($1,$3); }
6121-
|target_el{$$ =makeList1($1); }
6095+
target_el{$$ =makeList1($1); }
6096+
|target_list','target_el{$$ =lappend($1,$3); }
61226097
;
61236098

61246099
/* AS is not optional because shift/red conflict with unary ops*/
@@ -6155,8 +6130,8 @@ target_el:a_expr AS ColLabel
61556130
}
61566131
*/
61576132
update_target_list:
6158-
update_target_list','update_target_el{$$ =lappend($1,$3); }
6159-
|update_target_el{$$ =makeList1($1); }
6133+
update_target_el{$$ =makeList1($1); }
6134+
|update_target_list','update_target_el{$$ =lappend($1,$3); }
61606135
;
61616136

61626137
update_target_el:
@@ -6170,8 +6145,8 @@ update_target_el:
61706145
;
61716146

61726147
insert_target_list:
6173-
insert_target_list','insert_target_el{$$ =lappend($1,$3); }
6174-
|insert_target_el{$$ =makeList1($1); }
6148+
insert_target_el{$$ =makeList1($1); }
6149+
|insert_target_list','insert_target_el{$$ =lappend($1,$3); }
61756150
;
61766151

61776152
insert_target_el:

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