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Commitf464ad0

Browse files
author
Michael Meskes
committed
- Cleaned up parser a little bit. It does not make sense to allow a
 typename to be typedef'ed that cannot be parsed as variable type.- Allowed some SQL keywords to be used as C variable names.
1 parentf0c9397 commitf464ad0

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2 files changed

+41
-138
lines changed

2 files changed

+41
-138
lines changed

‎src/interfaces/ecpg/ChangeLog‎

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1740,5 +1740,11 @@ Sun Feb 15 14:44:14 CET 2004
17401740

17411741
- Added missing braces to array parsing.
17421742
- Allowed some C keywords to be used as SQL column names.
1743+
1744+
Mon Feb 16 08:17:19 CET 2004
1745+
1746+
- Cleaned up parser a little bit. It does not make sense to allow a
1747+
typename to be typedef'ed that cannot be parsed as variable type.
1748+
- Allowed some SQL keywords to be used as C variable names.
17431749
- Set ecpg version to 3.1.1.
17441750

‎src/interfaces/ecpg/preproc/preproc.y‎

Lines changed: 35 additions & 138 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/preproc.y,v 1.273 2004/02/15 15:38:20 meskes Exp $*/
1+
/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/preproc.y,v 1.274 2004/02/16 07:41:54 meskes Exp $*/
22

33
/* Copyright comment*/
44
%{
@@ -541,6 +541,7 @@ add_additional_variables(char *name, bool insert)
541541
%type<str>ECPGTypeNameusing_listECPGColLabelCommonUsingConst
542542
%type<str>inf_val_listinf_col_listusing_descriptorinto_descriptor
543543
%type<str>ecpg_into_usingprepared_namestruct_union_type_with_symbol
544+
%type<str>ECPGunreservedECPGunreserved_interval
544545

545546
%type<struct_union>s_struct_union_symbol
546547

@@ -550,7 +551,7 @@ add_additional_variables(char *name, bool insert)
550551

551552
%type<dtype_enum>descriptor_itemdesc_header_item
552553

553-
%type<type>var_typecommon_typesingle_vt_type
554+
%type<type>var_typesingle_vt_type
554555

555556
%type<action>action
556557

@@ -4459,7 +4460,7 @@ ecpg_interval:opt_interval{ $$ = $1; }
44594460
|MONTH_PTOMONTH_P{$$ = make_str("month to month"); }
44604461
;
44614462

4462-
single_vt_type:common_type
4463+
single_vt_type:var_type
44634464
|DOUBLE_P
44644465
{
44654466
$$.type_enum = ECPGt_double;
@@ -4468,124 +4469,6 @@ single_vt_type: common_type
44684469
$$.type_index = make_str("-1");
44694470
$$.type_sizeof =NULL;
44704471
}
4471-
|ECPGColLabelCommonecpg_interval
4472-
{
4473-
if (strlen($2) !=0 && strcmp ($1,"datetime") !=0 && strcmp ($1,"interval") !=0)
4474-
mmerror (PARSE_ERROR, ET_ERROR,"Interval specification not allowed here");
4475-
4476-
/*
4477-
* Check for type names that the SQL grammar treats as
4478-
* unreserved keywords
4479-
*/
4480-
if (strcmp($1,"varchar") ==0)
4481-
{
4482-
$$.type_enum = ECPGt_varchar;
4483-
$$.type_str = EMPTY;
4484-
$$.type_dimension = make_str("-1");
4485-
$$.type_index = make_str("-1");
4486-
$$.type_sizeof =NULL;
4487-
}
4488-
elseif (strcmp($1,"float") ==0)
4489-
{
4490-
$$.type_enum = ECPGt_float;
4491-
$$.type_str = make_str("float");
4492-
$$.type_dimension = make_str("-1");
4493-
$$.type_index = make_str("-1");
4494-
$$.type_sizeof =NULL;
4495-
}
4496-
elseif (strcmp($1,"numeric") ==0)
4497-
{
4498-
$$.type_enum = ECPGt_numeric;
4499-
$$.type_str = make_str("numeric");
4500-
$$.type_dimension = make_str("-1");
4501-
$$.type_index = make_str("-1");
4502-
$$.type_sizeof =NULL;
4503-
}
4504-
elseif (strcmp($1,"decimal") ==0)
4505-
{
4506-
$$.type_enum = ECPGt_decimal;
4507-
$$.type_str = make_str("decimal");
4508-
$$.type_dimension = make_str("-1");
4509-
$$.type_index = make_str("-1");
4510-
$$.type_sizeof =NULL;
4511-
}
4512-
elseif (strcmp($1,"date") ==0)
4513-
{
4514-
$$.type_enum = ECPGt_date;
4515-
$$.type_str = make_str("date");
4516-
$$.type_dimension = make_str("-1");
4517-
$$.type_index = make_str("-1");
4518-
$$.type_sizeof =NULL;
4519-
}
4520-
elseif (strcmp($1,"timestamp") ==0)
4521-
{
4522-
$$.type_enum = ECPGt_timestamp;
4523-
$$.type_str = make_str("timestamp");
4524-
$$.type_dimension = make_str("-1");
4525-
$$.type_index = make_str("-1");
4526-
$$.type_sizeof =NULL;
4527-
}
4528-
elseif (strcmp($1,"datetime") ==0)
4529-
{
4530-
$$.type_enum = ECPGt_timestamp;
4531-
$$.type_str = make_str("timestamp");
4532-
$$.type_dimension = make_str("-1");
4533-
$$.type_index = make_str("-1");
4534-
$$.type_sizeof =NULL;
4535-
}
4536-
elseif (strcmp($1,"interval") ==0)
4537-
{
4538-
$$.type_enum = ECPGt_interval;
4539-
$$.type_str = make_str("interval");
4540-
$$.type_dimension = make_str("-1");
4541-
$$.type_index = make_str("-1");
4542-
$$.type_sizeof =NULL;
4543-
}
4544-
else
4545-
{
4546-
/* this is for typedef'ed types*/
4547-
structtypedefs *this = get_typedef($1);
4548-
4549-
$$.type_str = (this->type->type_enum == ECPGt_varchar) ? EMPTY : mm_strdup(this->name);
4550-
$$.type_enum =this->type->type_enum;
4551-
$$.type_dimension =this->type->type_dimension;
4552-
$$.type_index =this->type->type_index;
4553-
$$.type_sizeof =this->type->type_sizeof;
4554-
struct_member_list[struct_level] = ECPGstruct_member_dup(this->struct_member_list);
4555-
}
4556-
}
4557-
|s_struct_union_symbol
4558-
{
4559-
/* this is for named structs/unions*/
4560-
char *name;
4561-
structtypedefs *this;
4562-
bool forward = (forward_name !=NULL && strcmp($1.symbol, forward_name) ==0 && strcmp($1.su,"struct") ==0);
4563-
4564-
name = cat2_str($1.su,$1.symbol);
4565-
/* Do we have a forward definition?*/
4566-
if (!forward)
4567-
{
4568-
/* No*/
4569-
4570-
this = get_typedef(name);
4571-
$$.type_str = mm_strdup(this->name);
4572-
$$.type_enum =this->type->type_enum;
4573-
$$.type_dimension =this->type->type_dimension;
4574-
$$.type_index =this->type->type_index;
4575-
$$.type_sizeof =this->type->type_sizeof;
4576-
struct_member_list[struct_level] = ECPGstruct_member_dup(this->struct_member_list);
4577-
free(name);
4578-
}
4579-
else
4580-
{
4581-
$$.type_str = name;
4582-
$$.type_enum = ECPGt_long;
4583-
$$.type_dimension = make_str("-1");
4584-
$$.type_index = make_str("-1");
4585-
$$.type_sizeof = make_str("");
4586-
struct_member_list[struct_level] =NULL;
4587-
}
4588-
}
45894472
;
45904473

45914474
/*
@@ -4740,7 +4623,7 @@ storage_modifier : S_CONST{ $$ = make_str("const"); }
47404623
|S_VOLATILE{$$ = make_str("volatile"); }
47414624
;
47424625

4743-
common_type:simple_type
4626+
var_type:simple_type
47444627
{
47454628
$$.type_enum =$1;
47464629
$$.type_str = mm_strdup(ECPGtype_name($1));
@@ -4796,10 +4679,7 @@ common_type: simple_type
47964679
$$.type_index = make_str("-1");
47974680
$$.type_sizeof =NULL;
47984681
}
4799-
;
4800-
4801-
var_type:common_type
4802-
|ECPGColLabelecpg_interval
4682+
|ECPGColLabelCommonecpg_interval
48034683
{
48044684
if (strlen($2) !=0 && strcmp ($1,"datetime") !=0 && strcmp ($1,"interval") !=0)
48054685
mmerror (PARSE_ERROR, ET_ERROR,"Interval specification not allowed here");
@@ -5092,7 +4972,7 @@ variable_list: variable
50924972
{$$ = cat_str(3,$1, make_str(","),$3); }
50934973
;
50944974

5095-
variable:opt_pointerECPGColLabelCommonopt_array_boundsopt_initializer
4975+
variable:opt_pointerECPGColLabelopt_array_boundsopt_initializer
50964976
{
50974977
structECPGtype * type;
50984978
char *dimension =$3.index1;/* dimension of array*/
@@ -5466,7 +5346,7 @@ ECPGTypedef: TYPE_P
54665346
/* an initializer specified*/
54675347
initializer =0;
54685348
}
5469-
ColLabelISvar_typeopt_array_boundsopt_reference
5349+
ECPGColLabelCommonISvar_typeopt_array_boundsopt_reference
54705350
{
54715351
/* add entry to list*/
54725352
structtypedefs *ptr, *this;
@@ -5778,7 +5658,9 @@ ColLabel: ECPGColLabel{ $$ = $1; }
57785658
|INPUT_P{$$ = make_str("input"); }
57795659
|INT_P{$$ = make_str("int"); }
57805660
|UNION{$$ = make_str("union"); }
5661+
|TO{$$ = make_str("to"); }
57815662
|ECPGCKeywords{$$ =$1; }
5663+
|ECPGunreserved_interval{$$ =$1; }
57825664
;
57835665

57845666
ECPGColLabelCommon:ident {$$ =$1; }
@@ -5788,8 +5670,8 @@ ECPGColLabelCommon: ident { $$ = $1; }
57885670
;
57895671

57905672
ECPGColLabel:ECPGColLabelCommon{$$ =$1; }
5791-
|unreserved_keyword{$$ =$1; }
57925673
|reserved_keyword{$$ =$1; }
5674+
|ECPGunreserved{$$ =$1; }
57935675
|ECPGKeywords_rest{$$ =$1; }
57945676
;
57955677

@@ -5800,7 +5682,7 @@ ECPGCKeywords: S_AUTO{ $$ = make_str("auto"); }
58005682
|S_STATIC{$$ = make_str("static"); }
58015683
|S_TYPEDEF{$$ = make_str("typedef"); }
58025684
;
5803-
5685+
58045686
/*
58055687
* Keyword classification lists. Generally, every keyword present in
58065688
* the Postgres grammar should appear in exactly one of these lists.
@@ -5812,8 +5694,21 @@ ECPGCKeywords: S_AUTO{ $$ = make_str("auto"); }
58125694

58135695
/* "Unreserved" keywords --- available for use as any kind of name.
58145696
*/
5815-
unreserved_keyword:
5816-
ABORT_P{$$ = make_str("abort"); }
5697+
/* The following symbols must be excluded from ECPGColLabel and directly included into ColLabel
5698+
to enable C variables to get names from ECPGColLabel:
5699+
DAY_P, HOUR_P, MINUTE_P, MONTH_P, SECOND_P, YEAR_P
5700+
*/
5701+
unreserved_keyword:ECPGunreserved_interval|ECPGunreserved;
5702+
5703+
ECPGunreserved_interval:DAY_P{$$ = make_str("day"); }
5704+
|HOUR_P{$$ = make_str("hour"); }
5705+
|MINUTE_P{$$ = make_str("minute"); }
5706+
|MONTH_P{$$ = make_str("month"); }
5707+
|SECOND_P{$$ = make_str("second"); }
5708+
|YEAR_P{$$ = make_str("year"); }
5709+
;
5710+
5711+
ECPGunreserved:ABORT_P{$$ = make_str("abort"); }
58175712
|ABSOLUTE_P{$$ = make_str("absolute"); }
58185713
|ACCESS{$$ = make_str("access"); }
58195714
|ACTION{$$ = make_str("action"); }
@@ -5847,7 +5742,7 @@ unreserved_keyword:
58475742
|CURSOR{$$ = make_str("cursor"); }
58485743
|CYCLE{$$ = make_str("cycle"); }
58495744
|DATABASE{$$ = make_str("database"); }
5850-
|DAY_P{$$ = make_str("day"); }
5745+
/*| DAY_P{ $$ = make_str("day"); }*/
58515746
|DEALLOCATE{$$ = make_str("deallocate"); }
58525747
|DECLARE{$$ = make_str("declare"); }
58535748
|DEFAULTS{$$ = make_str("defaults"); }
@@ -5874,7 +5769,7 @@ unreserved_keyword:
58745769
|GLOBAL{$$ = make_str("global"); }
58755770
|HANDLER{$$ = make_str("handler"); }
58765771
|HOLD{$$ = make_str("hold"); }
5877-
|HOUR_P{$$ = make_str("hour"); }
5772+
/*| HOUR_P{ $$ = make_str("hour"); }*/
58785773
|IMMEDIATE{$$ = make_str("immediate"); }
58795774
|IMMUTABLE{$$ = make_str("immutable"); }
58805775
|IMPLICIT_P{$$ = make_str("implicit"); }
@@ -5899,10 +5794,10 @@ unreserved_keyword:
58995794
|LOCK_P{$$ = make_str("lock"); }
59005795
|MATCH{$$ = make_str("match"); }
59015796
|MAXVALUE{$$ = make_str("maxvalue"); }
5902-
|MINUTE_P{$$ = make_str("minute"); }
5797+
/*| MINUTE_P{ $$ = make_str("minute"); }*/
59035798
|MINVALUE{$$ = make_str("minvalue"); }
59045799
|MODE{$$ = make_str("mode"); }
5905-
|MONTH_P{$$ = make_str("month"); }
5800+
/*| MONTH_P{ $$ = make_str("month"); }*/
59065801
|MOVE{$$ = make_str("move"); }
59075802
|NAMES{$$ = make_str("names"); }
59085803
|NATIONAL{$$ = make_str("national"); }
@@ -5945,7 +5840,7 @@ unreserved_keyword:
59455840
|RULE{$$ = make_str("rule"); }
59465841
|SCHEMA{$$ = make_str("schema"); }
59475842
|SCROLL{$$ = make_str("scroll"); }
5948-
|SECOND_P{$$ = make_str("second"); }
5843+
/*| SECOND_P{ $$ = make_str("second"); }*/
59495844
|SEQUENCE{$$ = make_str("sequence"); }
59505845
|SERIALIZABLE{$$ = make_str("serializable"); }
59515846
|SESSION{$$ = make_str("session"); }
@@ -5987,7 +5882,7 @@ unreserved_keyword:
59875882
|WITHOUT{$$ = make_str("without"); }
59885883
|WORK{$$ = make_str("work"); }
59895884
|WRITE {$$ = make_str("write"); }
5990-
|YEAR_P{$$ = make_str("year"); }
5885+
/*| YEAR_P{ $$ = make_str("year"); }*/
59915886
|ZONE{$$ = make_str("zone"); }
59925887
;
59935888

@@ -6135,7 +6030,9 @@ reserved_keyword:
61356030
|SOME{$$ = make_str("some"); }
61366031
|TABLE{$$ = make_str("table"); }
61376032
|THEN{$$ = make_str("then"); }
6033+
/* TO must be excluded from ECPGColLabel because of a conflict in variable name parsing
61386034
| TO{ $$ = make_str("to"); }
6035+
*/
61396036
|TRAILING{$$ = make_str("trailing"); }
61406037
|TRUE_P{$$ = make_str("true"); }
61416038
/* UNION must be excluded from ECPGColLabel because of conflict with s_union

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