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012abebab1
not likely ever to be implemented seeing it's been removed from SQL2003. This allows getting rid of the 'filter' version of yylex() that we had in parser.c, which should save at least a few microseconds in parsing.
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* parser.c
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* Main entry point/driver for PostgreSQL grammar
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*
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* Note that the grammar is not allowed to perform any table access
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* (since we need to be able to do basic parsing even while inside an
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* aborted transaction). Therefore, the data structures returned by
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* the grammar are "raw" parsetrees that still need to be analyzed by
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* analyze.c and related files.
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*
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*
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* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/parser/parser.c,v 1.65 2006/03/07 01:00:17 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "parser/gramparse.h"
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#include "parser/parser.h"
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List *parsetree; /* result of parsing is left here */
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/*
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* raw_parser
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* Given a query in string form, do lexical and grammatical analysis.
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*
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* Returns a list of raw (un-analyzed) parse trees.
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*/
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List *
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raw_parser(const char *str)
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{
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int yyresult;
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parsetree = NIL; /* in case grammar forgets to set it */
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scanner_init(str);
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parser_init();
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yyresult = base_yyparse();
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scanner_finish();
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if (yyresult) /* error */
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return NIL;
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return parsetree;
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}
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