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Code

Fixed bug in Informix define handling.

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This commit is contained in:
Michael Meskes 2007-08-29 13:58:51 +00:00
parent d7e1fa482a
commit 2169ad2208
2 changed files with 66 additions and 60 deletions
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7
src/interfaces/ecpg/preproc/ecpg.c
View File

@ -1,4 +1,4 @@
/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/ecpg.c,v 1.93 2005/10/15 02:49:47 momjian Exp $ */
/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/ecpg.c,v 1.93.2.1 2007/08/29 13:58:51 meskes Exp $ */
/* New main for ecpg, the PostgreSQL embedded SQL precompiler. */
/* (C) Michael Meskes <meskes@postgresql.org> Feb 5th, 1998 */
@ -185,11 +185,6 @@ main(int argc, char *const argv[])
char informix_path[MAXPGPATH];
compat = (strcmp(optarg, "INFORMIX") == 0) ? ECPG_COMPAT_INFORMIX : ECPG_COMPAT_INFORMIX_SE;
/* system_includes = true; */
add_preprocessor_define("dec_t=decimal");
add_preprocessor_define("intrvl_t=interval");
add_preprocessor_define("dtime_t=timestamp");
get_pkginclude_path(my_exec_path, pkginclude_path);
snprintf(informix_path, MAXPGPATH, "%s/informix/esql", pkginclude_path);
add_include_path(informix_path);

119
src/interfaces/ecpg/preproc/pgc.l
View File

@ -12,7 +12,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/pgc.l,v 1.137 2005/10/05 14:58:36 meskes Exp $
* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/pgc.l,v 1.137.2.1 2007/08/29 13:58:51 meskes Exp $
*
*-------------------------------------------------------------------------
*/
@ -47,6 +47,8 @@ static void addlit(char *ytext, int yleng);
static void addlitchar (unsigned char);
static void parse_include (void);
static void check_escape_warning(void);
static bool isdefine(void);
static bool isinformixdefine(void);
char *token_start;
int state_before;
@ -647,29 +649,8 @@ cppline {space}*#(.*\\{space})*.*{newline}
}
<SQL>{identifier} {
ScanKeyword *keyword;
struct _defines *ptr;
/* How about a DEFINE? */
for (ptr = defines; ptr; ptr = ptr->next)
{
if (strcmp(yytext, ptr->old) == 0 && ptr->used == NULL)
{
struct _yy_buffer *yb;
yb = mm_alloc(sizeof(struct _yy_buffer));
yb->buffer = YY_CURRENT_BUFFER;
yb->lineno = yylineno;
yb->filename = mm_strdup(input_filename);
yb->next = yy_buffer;
ptr->used = yy_buffer = yb;
yy_scan_string(ptr->new);
break;
}
}
if (ptr == NULL)
if (!isdefine())
{
/* Is it an SQL keyword? */
keyword = ScanKeywordLookup(yytext);
@ -741,38 +722,10 @@ cppline {space}*#(.*\\{space})*.*{newline}
}
<C>{identifier} {
ScanKeyword *keyword;
struct _defines *ptr;
if (INFORMIX_MODE)
{
/* Informix uses SQL defines only in SQL space */
ptr = NULL;
}
else
{
/* is it a define? */
for (ptr = defines; ptr; ptr = ptr->next)
{
if (strcmp(yytext, ptr->old) == 0 && ptr->used == NULL)
{
struct _yy_buffer *yb;
yb = mm_alloc(sizeof(struct _yy_buffer));
yb->buffer = YY_CURRENT_BUFFER;
yb->lineno = yylineno;
yb->filename = mm_strdup(input_filename);
yb->next = yy_buffer;
ptr->used = yy_buffer = yb;
yy_scan_string(ptr->new);
break;
}
}
}
if (ptr == NULL)
/* Informix uses SQL defines only in SQL space */
/* however, some defines have to be taken care of for compatibility */
if ((!INFORMIX_MODE || !isinformixdefine()) && !isdefine())
{
keyword = ScanCKeywordLookup(yytext);
if (keyword != NULL)
@ -1245,3 +1198,61 @@ check_escape_warning(void)
mmerror (PARSE_ERROR, ET_WARNING, "nonstandard use of escape in a string literal");
warn_on_first_escape = false; /* warn only once per string */
}
static bool isdefine(void)
{
struct _defines *ptr;
/* is it a define? */
for (ptr = defines; ptr; ptr = ptr->next)
{
if (strcmp(yytext, ptr->old) == 0 && ptr->used == NULL)
{
struct _yy_buffer *yb;
yb = mm_alloc(sizeof(struct _yy_buffer));
yb->buffer = YY_CURRENT_BUFFER;
yb->lineno = yylineno;
yb->filename = mm_strdup(input_filename);
yb->next = yy_buffer;
ptr->used = yy_buffer = yb;
yy_scan_string(ptr->new);
return true;
}
}
return false;
}
static bool isinformixdefine(void)
{
const char *new = NULL;
if (strcmp(yytext, "dec_t") == 0)
new = "decimal";
else if (strcmp(yytext, "intrvl_t") == 0)
new = "interval";
else if (strcmp(yytext, "dtime_t") == 0)
new = "timestamp";
if (new)
{
struct _yy_buffer *yb;
yb = mm_alloc(sizeof(struct _yy_buffer));
yb->buffer = YY_CURRENT_BUFFER;
yb->lineno = yylineno;
yb->filename = mm_strdup(input_filename);
yb->next = yy_buffer;
yy_buffer = yb;
yy_scan_string(new);
return true;
}
return false;
}