/*
* raw_parser
* Given a query in string form, do lexical and grammatical analysis.
*
* Returns a list of raw (un-analyzed) parse trees. The immediate elements
* of the list are always RawStmt nodes.
*/
List *
raw_parser(const char *str)
{
core_yyscan_t yyscanner;
base_yy_extra_type yyextra;
int yyresult;
/* initialize the flex scanner */
yyscanner = scanner_init(str, &yyextra.core_yy_extra,
ScanKeywords, NumScanKeywords);
/* base_yylex() only needs this much initialization */
yyextra.have_lookahead = false;
/* initialize the bison parser */
parser_init(&yyextra);
/* Parse! */
yyresult = base_yyparse(yyscanner);
/* Clean up (release memory) */
scanner_finish(yyscanner);
if (yyresult) /* error */
return NIL;
return yyextra.parsetree;
}
/*
* raw_parser
* Given a query in string form, do lexical and grammatical analysis.
*
* Returns a list of raw (un-analyzed) parse trees.
*/
List *
raw_parser(const char *str)
{
int yyresult;
parsetree = NIL; /* in case grammar forgets to set it */
have_lookahead = false;
scanner_init(str);
parser_init();
yyresult = base_yyparse();
scanner_finish();
if (yyresult) /* error */
return NIL;
return parsetree;
}
/*
* raw_parser
* Given a query in string form, do lexical and grammatical analysis.
*
* Returns a list of raw (un-analyzed) parse trees.
*/
List *
raw_parser(const char *str)
{
char *sqlString;
core_yyscan_t yyscanner;
base_yy_extra_type yyextra;
int yyresult;
/* initialize the flex scanner */
yyscanner = scanner_init(str, &yyextra.core_yy_extra,
ScanKeywords, NumScanKeywords);
/* base_yylex() only needs this much initialization */
yyextra.have_lookahead = false;
/* initialize the bison parser */
parser_init(&yyextra);
/* Parse! */
yyresult = base_yyparse(yyscanner);
/* Clean up (release memory) */
scanner_finish(yyscanner);
if (yyresult) /* error */
return NIL;
/*
elog(WARNING, "Expression Tree: %s", nodeToString((const void *)yyextra.parsetree));
sqlString = toSQL((const void *)yyextra.parsetree);
elog(WARNING, "SQL Conversion: %s", sqlString);
*/
return yyextra.parsetree;
}