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/*
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 2015 Oracle and/or its affiliates. All rights reserved.
*
*/
#include "db_sql_codegen.h"
extern void bdb_create_database(Token *, Parse *pParse);
static void
preparserSyntaxError(t, pParse)
Token *t;
Parse *pParse;
{
sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", t);
pParse->parseError = 1;
}
/*
* The pre-parser is invoked for each token found by the lexical
* analyzer. It passes most tokens on to the main SQLite parser
* unchanged; however it maintains its own state machine so that it
* can notice certain sequences of tokens. In particular, it catches
* CREATE DATABASE, which is a sequence that the SQLite parser does
* not recognize.
*/
void preparser(pEngine, tokenType, token, pParse)
void *pEngine;
int tokenType;
Token token;
Parse *pParse;
{
static enum preparserState {
IDLE = 0, GOT_CREATE = 1, GOT_DATABASE = 2, GOT_NAME = 3
} state = IDLE;
switch (state) {
case IDLE:
if (tokenType == TK_CREATE)
state = GOT_CREATE;
else /* pass token to sqlite parser -- the common case */
sqlite3Parser(pEngine, tokenType,
pParse->sLastToken, pParse);
break;
case GOT_CREATE:
if (tokenType == TK_DATABASE)
state = GOT_DATABASE;
else { /* return to idle, pass the CREATE token, then
* the current token to the sqlite parser */
state = IDLE;
sqlite3Parser(pEngine, TK_CREATE,
pParse->sLastToken, pParse);
sqlite3Parser(pEngine, tokenType,
pParse->sLastToken, pParse);
}
break;
case GOT_DATABASE:
if (tokenType == TK_ID) {
state = GOT_NAME;
bdb_create_database(&token, pParse);
} else
preparserSyntaxError(&token, pParse);
break;
case GOT_NAME:
if (tokenType == TK_SEMI)
state = IDLE;
else
preparserSyntaxError(&token, pParse);
break;
}
}
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