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Commit25ad143

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committed
Major update of ecpg preprocessor
From: Michael Meskes <meskes@topsystem.de>
1 parent30f737f commit25ad143

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13 files changed

+379
-254
lines changed

13 files changed

+379
-254
lines changed

‎src/interfaces/Makefile

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
#
88
#
99
# IDENTIFICATION
10-
# $Header: /cvsroot/pgsql/src/interfaces/Makefile,v 1.6 1998/02/12 02:14:14 scrappy Exp $
10+
# $Header: /cvsroot/pgsql/src/interfaces/Makefile,v 1.7 1998/02/17 01:47:19 scrappy Exp $
1111
#
1212
#-------------------------------------------------------------------------
1313

@@ -16,7 +16,7 @@ include $(SRCDIR)/Makefile.global
1616

1717
.DEFAULTall:
1818
$(MAKE) -C libpq$@
19-
#$(MAKE) -C ecpg $@
19+
$(MAKE) -C ecpg$@
2020
ifeq ($(HAVE_Cplusplus), true)
2121
$(MAKE) -C libpq++ $@
2222
else

‎src/interfaces/ecpg/ChangeLog

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -9,3 +9,17 @@ Wed Feb 11 10:58:13 CET 1998
99
Thu Feb 12 14:45:07 CET 1998
1010

1111
- Changed parser to correctly handle local variables.
12+
- Allow static and extern variable definitions.
13+
- free() variable structure completely.
14+
15+
Fri Feb 13 12:35:58 CET 1998
16+
17+
- ecpg can use structs to store data, but only if the complete
18+
definition of the struct lies inside the sql declare section
19+
and only simple types used.
20+
21+
Fre Feb 13 14:12:41 CET 1998
22+
23+
- Structure now work completely.
24+
25+

‎src/interfaces/ecpg/TODO

Lines changed: 2 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -16,10 +16,6 @@ just -1 for them all.
1616

1717
Missing library functions to_date et al.
1818

19-
Possibility to define records or structs in the declare section in a way
20-
that the record can be filled from one row in the database. This is a
21-
simpler way to handle an entire row at a time.
22-
2319
Oracle has array operations that enhances speed. When implementing it in
2420
ecpg it is done for compatibility reasons only. For them to improve speed
2521
would require a lot more insight in the postgres internal mechanisms than I
@@ -44,5 +40,6 @@ could be realised in a script.
4440

4541
Now comes my list (MM):
4642

47-
Variable definitions containing static/volatile have to be possible.
43+
What do we do with enum data types?
4844

45+
'signed' isn't understood so far

‎src/interfaces/ecpg/lib/Makefile.in

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -47,7 +47,7 @@ $(shlib): ecpglib.o typename.o
4747
clean:
4848
rm -f*.o*.a core a.out*~$(shlib) libecpg.so
4949

50-
install: libecpg.a
50+
install: libecpg.a$(shlib)
5151
install -m 644 libecpg.a$(DESTDIR)$(LIBDIR)
5252
install -m 644$(shlib)$(DESTDIR)$(LIBDIR)
5353
ln -sf$(shlib)$(DESTDIR)$(LIBDIR)/libecpg.so

‎src/interfaces/ecpg/preproc/ecpg.c

Lines changed: 1 addition & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -51,12 +51,7 @@ main(int argc, char *const argv[])
5151
{
5252
char*filename,*ptr2ext;
5353

54-
filename=malloc(strlen(argv[fnr])+2);
55-
if (filename==NULL)
56-
{
57-
perror("malloc");
58-
continue;
59-
}
54+
filename=mm_alloc(strlen(argv[fnr])+2);
6055

6156
strcpy(filename,argv[fnr]);
6257

‎src/interfaces/ecpg/preproc/extern.h

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -11,3 +11,4 @@ extern FILE *yyin, *yyout;
1111
externvoidlex_init(void);
1212
externchar*input_filename;
1313
externintyyparse(void);
14+
externvoid*mm_alloc(size_t);

‎src/interfaces/ecpg/preproc/pgc.l

Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -58,6 +58,14 @@ float{ dbg(S_FLOAT); return S_FLOAT; }
5858
double{ dbg(S_DOUBLE); return S_DOUBLE; }
5959
bool { dbg(S_BOOL); return S_BOOL; }
6060
61+
static{ dbg(S_STATIC); return S_STATIC; }
62+
extern{ dbg(S_EXTERN); return S_EXTERN; }
63+
auto{ dbg(S_AUTO); return S_AUTO; }
64+
const{ dbg(S_CONST); return S_CONST; }
65+
register{ dbg(S_REGISTER); return S_REGISTER; }
66+
67+
struct{ dbg(S_STRUCT); return S_STRUCT; }
68+
6169
{string}{ dbg(SQL_STRING); return SQL_STRING; }
6270
<SQL>{ws};
6371
{symbol}{ dbg(S_SYMBOL); return S_SYMBOL; }

‎src/interfaces/ecpg/preproc/preproc.y

Lines changed: 63 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -12,7 +12,11 @@ static void yyerror(char *);
1212
/*
1313
* Variables containing simple states.
1414
*/
15-
int debugging =0;
15+
intdebugging =0;
16+
staticintstruct_level =0;
17+
18+
/* temporarily store record members while creating the data structure*/
19+
structECPGrecord_member *record_member_list[128] = {NULL };
1620

1721
/*
1822
* Handle the filename and line numbering.
@@ -86,7 +90,7 @@ remove_variables(int brace_level)
8690
{
8791
structvariable * p, *prev;
8892

89-
for (p = prev = allvariables; p; p = p->next)
93+
for (p = prev = allvariables; p; p = p ? p->next :NULL)
9094
{
9195
if (p->brace_level >= brace_level)
9296
{
@@ -96,6 +100,8 @@ remove_variables(int brace_level)
96100
else
97101
prev->next = p->next;
98102

103+
ECPGfree_type(p->type);
104+
free(p->name);
99105
free(p);
100106
p = prev;
101107
}
@@ -157,7 +163,7 @@ dump_variables(struct arguments * list)
157163
dump_variables(list->next);
158164

159165
/* Then the current element.*/
160-
ECPGdump_a_type(yyout, list->variable->name, list->variable->type);
166+
ECPGdump_a_type(yyout, list->variable->name, list->variable->type,NULL);
161167

162168
/* Then release the list element.*/
163169
free(list);
@@ -179,12 +185,12 @@ dump_variables(struct arguments * list)
179185

180186
%token<tagname>S_SYMBOLS_LENGTHS_ANYTHING
181187
%token<tagname>S_VARCHARS_VARCHAR2
182-
%token<tagname>S_EXTERNS_STATIC
188+
%token<tagname>S_EXTERNS_STATICS_AUTOS_CONSTS_REGISTERS_STRUCT
183189
%token<tagname>S_UNSIGNEDS_SIGNED
184190
%token<tagname>S_LONGS_SHORTS_INTS_CHARS_FLOATS_DOUBLES_BOOL
185191
%token<tagname>'['']'';'',''{''}'
186192

187-
%type<type>typetype_detailedvarchar_typesimple_typearray_type
193+
%type<type>typetype_detailedvarchar_typesimple_typearray_typestruct_type
188194
%type<symbolname>symbol
189195
%type<tagname>maybe_storage_clausevarchar_tag
190196
%type<type_enum>simple_tag
@@ -227,8 +233,12 @@ variable_declarations : /* empty */
227233

228234
/* Here is where we can enter support for typedef.*/
229235
variable_declaration :type';'{
230-
new_variable($<type>1.name, $<type>1.typ);
231-
free($<type>1.name);
236+
/* don't worry about our list when we're working on a struct*/
237+
if (struct_level ==0)
238+
{
239+
new_variable($<type>1.name, $<type>1.typ);
240+
free($<type>1.name);
241+
}
232242
fprintf(yyout,";");
233243
}
234244

@@ -244,27 +254,61 @@ symbol : S_SYMBOL {
244254
type :maybe_storage_clausetype_detailed { $<type>$ = $<type>2; };
245255
type_detailed :varchar_type { $<type>$ = $<type>1; }
246256
|simple_type { $<type>$ = $<type>1; }
247-
|array_type {$<type>$ = $<type>1; };
257+
|array_type {$<type>$ = $<type>1; }
258+
|struct_type {$<type>$ = $<type>1; };
248259

249260
varchar_type :varchar_tagsymbolindex {
250261
fprintf(yyout,"struct varchar_%s { int len; char arr[%d]; } %s", $<symbolname>2, $<indexsize>3, $<symbolname>2);
251-
$<type>$.name = $<symbolname>2;
252-
$<type>$.typ = ECPGmake_varchar_type(ECPGt_varchar, $<indexsize>3);
262+
if (struct_level ==0)
263+
{
264+
$<type>$.name = $<symbolname>2;
265+
$<type>$.typ = ECPGmake_varchar_type(ECPGt_varchar, $<indexsize>3);
266+
}
267+
else
268+
ECPGmake_record_member($<symbolname>2, ECPGmake_varchar_type(ECPGt_varchar, $<indexsize>3), &(record_member_list[struct_level-1]));
253269
}
254270

255271
varchar_tag :S_VARCHAR { $<tagname>$ = $<tagname>1; }
256272
|S_VARCHAR2 { $<tagname>$ = $<tagname>1; };
257273

258274
simple_type :simple_tagsymbol {
259275
fprintf(yyout,"%s %s", ECPGtype_name($<type_enum>1), $<symbolname>2);
260-
$<type>$.name = $<symbolname>2;
261-
$<type>$.typ = ECPGmake_simple_type($<type_enum>1);
276+
if (struct_level ==0)
277+
{
278+
$<type>$.name = $<symbolname>2;
279+
$<type>$.typ = ECPGmake_simple_type($<type_enum>1);
280+
}
281+
else
282+
ECPGmake_record_member($<symbolname>2, ECPGmake_simple_type($<type_enum>1), &(record_member_list[struct_level-1]));
262283
}
263284

264285
array_type :simple_tagsymbolindex {
265286
fprintf(yyout,"%s %s [%d]", ECPGtype_name($<type_enum>1), $<symbolname>2, $<indexsize>3);
266-
$<type>$.name = $<symbolname>2;
267-
$<type>$.typ = ECPGmake_array_type(ECPGmake_simple_type($<type_enum>1), $<indexsize>3);
287+
if (struct_level ==0)
288+
{
289+
$<type>$.name = $<symbolname>2;
290+
$<type>$.typ = ECPGmake_array_type(ECPGmake_simple_type($<type_enum>1), $<indexsize>3);
291+
}
292+
else
293+
ECPGmake_record_member($<symbolname>2, ECPGmake_array_type(ECPGmake_simple_type($<type_enum>1), $<indexsize>3), &(record_member_list[struct_level-1]));
294+
}
295+
296+
s_struct :S_STRUCTsymbol {
297+
struct_level++;
298+
fprintf(yyout,"struct %s {", $<symbolname>2);
299+
}
300+
301+
struct_type :s_struct'{'variable_declarations'}'symbol {
302+
struct_level--;
303+
if (struct_level ==0)
304+
{
305+
$<type>$.name = $<symbolname>5;
306+
$<type>$.typ = ECPGmake_record_type(record_member_list[struct_level]);
307+
}
308+
else
309+
ECPGmake_record_member($<symbolname>5, ECPGmake_record_type(record_member_list[struct_level]), &(record_member_list[struct_level-1]));
310+
fprintf(yyout,"} %s", $<symbolname>5);
311+
record_member_list[struct_level] =NULL;
268312
}
269313

270314
simple_tag :S_CHAR { $<type_enum>$ = ECPGt_char; }
@@ -281,6 +325,9 @@ simple_tag : S_CHAR { $<type_enum>$ = ECPGt_char; }
281325

282326
maybe_storage_clause :S_EXTERN { fwrite(yytext, yyleng,1, yyout); }
283327
|S_STATIC { fwrite(yytext, yyleng,1, yyout); }
328+
|S_CONST { fwrite(yytext, yyleng,1, yyout); }
329+
|S_REGISTER { fwrite(yytext, yyleng,1, yyout); }
330+
|S_AUTO { fwrite(yytext, yyleng,1, yyout); }
284331
|/* empty*/ { };
285332

286333
index :'['length']' {
@@ -369,13 +416,14 @@ canything : both_anything
369416
sqlanything :both_anything;
370417

371418
both_anything :S_LENGTH|S_VARCHAR|S_VARCHAR2
372-
|S_LONG|S_SHORT|S_INT|S_CHAR|S_FLOAT|S_DOUBLE
419+
|S_LONG|S_SHORT|S_INT|S_CHAR|S_FLOAT|S_DOUBLE|S_BOOL
373420
|SQL_OPEN|SQL_CONNECT
374421
|SQL_STRING
375422
|SQL_BEGIN|SQL_END
376423
|SQL_DECLARE|SQL_SECTION
377424
|SQL_INCLUDE
378425
|S_SYMBOL
426+
|S_STATIC|S_EXTERN|S_AUTO|S_CONST|S_REGISTER|S_STRUCT
379427
|'['|']'|','
380428
|S_ANYTHING;
381429

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