/*
** Return UTF-8 encoded English language explanation of the most recent
** error.
*/
const char *sqlite3_errmsg(sqlite3 *db){
const char *z;
if( sqlite3_malloc_failed ){
return sqlite3ErrStr(SQLITE_NOMEM);
}
if( sqlite3SafetyCheck(db) || db->errCode==SQLITE_MISUSE ){
return sqlite3ErrStr(SQLITE_MISUSE);
}
z = sqlite3_value_text(db->pErr);
if( z==0 ){
z = sqlite3ErrStr(db->errCode);
}
return z;
}
/*
** Return UTF-8 encoded English language explanation of the most recent
** error.
*/
const char *sqlite3_errmsg(sqlite3 *db){
const char *z;
assert( !sqlite3MallocFailed() );
if( !db ){
return sqlite3ErrStr(SQLITE_NOMEM);
}
if( sqlite3SafetyCheck(db) || db->errCode==SQLITE_MISUSE ){
return sqlite3ErrStr(SQLITE_MISUSE);
}
z = (char*)sqlite3_value_text(db->pErr);
if( z==0 ){
z = sqlite3ErrStr(db->errCode);
}
return z;
}
/*
** Return UTF-16 encoded English language explanation of the most recent
** error.
*/
const void *sqlite3_errmsg16(sqlite3 *db){
/* Because all the characters in the string are in the unicode
** range 0x00-0xFF, if we pad the big-endian string with a
** zero byte, we can obtain the little-endian string with
** &big_endian[1].
*/
static const char outOfMemBe[] = {
0, 'o', 0, 'u', 0, 't', 0, ' ',
0, 'o', 0, 'f', 0, ' ',
0, 'm', 0, 'e', 0, 'm', 0, 'o', 0, 'r', 0, 'y', 0, 0, 0
};
static const char misuseBe [] = {
0, 'l', 0, 'i', 0, 'b', 0, 'r', 0, 'a', 0, 'r', 0, 'y', 0, ' ',
0, 'r', 0, 'o', 0, 'u', 0, 't', 0, 'i', 0, 'n', 0, 'e', 0, ' ',
0, 'c', 0, 'a', 0, 'l', 0, 'l', 0, 'e', 0, 'd', 0, ' ',
0, 'o', 0, 'u', 0, 't', 0, ' ',
0, 'o', 0, 'f', 0, ' ',
0, 's', 0, 'e', 0, 'q', 0, 'u', 0, 'e', 0, 'n', 0, 'c', 0, 'e', 0, 0, 0
};
const void *z;
if( sqlite3_malloc_failed ){
return (void *)(&outOfMemBe[SQLITE_UTF16NATIVE==SQLITE_UTF16LE?1:0]);
}
if( sqlite3SafetyCheck(db) || db->errCode==SQLITE_MISUSE ){
return (void *)(&misuseBe[SQLITE_UTF16NATIVE==SQLITE_UTF16LE?1:0]);
}
z = sqlite3_value_text16(db->pErr);
if( z==0 ){
sqlite3ValueSetStr(db->pErr, -1, sqlite3ErrStr(db->errCode),
SQLITE_UTF8, SQLITE_STATIC);
z = sqlite3_value_text16(db->pErr);
}
return z;
}
void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
pCtx->isError = errCode;
if( pCtx->s.flags & MEM_Null ){
sqlite3VdbeMemSetStr(&pCtx->s, sqlite3ErrStr(errCode), -1,
SQLITE_UTF8, SQLITE_STATIC);
}
}
/*
** Return UTF-8 encoded English language explanation of the most recent
** error.
*/
EXPORT_C const char *sqlite3_errmsg(sqlite3 *db){
const char *z;
if( !db ){
return sqlite3ErrStr(SQLITE_NOMEM);
}
if( sqlite3SafetyCheck(db) || db->errCode==SQLITE_MISUSE ){
return sqlite3ErrStr(SQLITE_MISUSE);
}
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
z = (char*)sqlite3_value_text(db->pErr);
if( z==0 ){
z = sqlite3ErrStr(db->errCode);
}
sqlite3_mutex_leave(db->mutex);
return z;
}
void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
pCtx->isError = errCode;
pCtx->fErrorOrAux = 1;
if( pCtx->pOut->flags & MEM_Null ){
sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1,
SQLITE_UTF8, SQLITE_STATIC);
}
}
void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
pCtx->isError = errCode;
pCtx->fErrorOrAux = 1;
#ifdef SQLITE_DEBUG
if( pCtx->pVdbe ) pCtx->pVdbe->rcApp = errCode;
#endif
if( pCtx->pOut->flags & MEM_Null ){
sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1,
SQLITE_UTF8, SQLITE_STATIC);
}
}
/*
** Attempt to read the database schema and initialize internal
** data structures for a single database file. The index of the
** database file is given by iDb. iDb==0 is used for the main
** database. iDb==1 should never be used. iDb>=2 is used for
** auxiliary databases. Return one of the SQLITE_ error codes to
** indicate success or failure.
*/
static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){
int rc;
BtCursor *curMain;
int size;
Table *pTab;
Db *pDb;
char const *azArg[4];
int meta[10];
InitData initData;
char const *zMasterSchema;
char const *zMasterName = SCHEMA_TABLE(iDb);
/*
** The master database table has a structure like this
*/
static const char master_schema[] =
"CREATE TABLE sqlite_master(\n"
" type text,\n"
" name text,\n"
" tbl_name text,\n"
" rootpage integer,\n"
" sql text\n"
")"
;
#ifndef SQLITE_OMIT_TEMPDB
static const char temp_master_schema[] =
"CREATE TEMP TABLE sqlite_temp_master(\n"
" type text,\n"
" name text,\n"
" tbl_name text,\n"
" rootpage integer,\n"
" sql text\n"
")"
;
#else
#define temp_master_schema 0
#endif
assert( iDb>=0 && iDb<db->nDb );
assert( db->aDb[iDb].pSchema );
/* zMasterSchema and zInitScript are set to point at the master schema
** and initialisation script appropriate for the database being
** initialised. zMasterName is the name of the master table.
*/
if( !OMIT_TEMPDB && iDb==1 ){
zMasterSchema = temp_master_schema;
}else{
zMasterSchema = master_schema;
}
zMasterName = SCHEMA_TABLE(iDb);
/* Construct the schema tables. */
sqlite3SafetyOff(db);
azArg[0] = zMasterName;
azArg[1] = "1";
azArg[2] = zMasterSchema;
azArg[3] = 0;
initData.db = db;
initData.iDb = iDb;
initData.pzErrMsg = pzErrMsg;
rc = sqlite3InitCallback(&initData, 3, (char **)azArg, 0);
if( rc ){
sqlite3SafetyOn(db);
return initData.rc;
}
pTab = sqlite3FindTable(db, zMasterName, db->aDb[iDb].zName);
if( pTab ){
pTab->readOnly = 1;
}
sqlite3SafetyOn(db);
/* Create a cursor to hold the database open
*/
pDb = &db->aDb[iDb];
if( pDb->pBt==0 ){
if( !OMIT_TEMPDB && iDb==1 ){
DbSetProperty(db, 1, DB_SchemaLoaded);
}
return SQLITE_OK;
}
rc = sqlite3BtreeCursor(pDb->pBt, MASTER_ROOT, 0, 0, 0, &curMain);
if( rc!=SQLITE_OK && rc!=SQLITE_EMPTY ){
sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
return rc;
}
/* Get the database meta information.
**
** Meta values are as follows:
** meta[0] Schema cookie. Changes with each schema change.
** meta[1] File format of schema layer.
** meta[2] Size of the page cache.
** meta[3] Use freelist if 0. Autovacuum if greater than zero.
** meta[4] Db text encoding. 1:UTF-8 2:UTF-16LE 3:UTF-16BE
** meta[5] The user cookie. Used by the application.
** meta[6]
** meta[7]
** meta[8]
** meta[9]
**
** Note: The #defined SQLITE_UTF* symbols in sqliteInt.h correspond to
** the possible values of meta[4].
*/
if( rc==SQLITE_OK ){
int i;
for(i=0; rc==SQLITE_OK && i<sizeof(meta)/sizeof(meta[0]); i++){
rc = sqlite3BtreeGetMeta(pDb->pBt, i+1, (u32 *)&meta[i]);
}
if( rc ){
sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
sqlite3BtreeCloseCursor(curMain);
return rc;
}
}else{
memset(meta, 0, sizeof(meta));
}
pDb->pSchema->schema_cookie = meta[0];
/* If opening a non-empty database, check the text encoding. For the
** main database, set sqlite3.enc to the encoding of the main database.
** For an attached db, it is an error if the encoding is not the same
** as sqlite3.enc.
*/
if( meta[4] ){ /* text encoding */
if( iDb==0 ){
/* If opening the main database, set ENC(db). */
ENC(db) = (u8)meta[4];
db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 6, 0);
}else{
/* If opening an attached database, the encoding much match ENC(db) */
if( meta[4]!=ENC(db) ){
sqlite3BtreeCloseCursor(curMain);
sqlite3SetString(pzErrMsg, "attached databases must use the same"
" text encoding as main database", (char*)0);
return SQLITE_ERROR;
}
}
}else{
DbSetProperty(db, iDb, DB_Empty);
}
pDb->pSchema->enc = ENC(db);
size = meta[2];
if( size==0 ){ size = MAX_PAGES; }
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
/*
** file_format==1 Version 3.0.0.
** file_format==2 Version 3.1.3. // ALTER TABLE ADD COLUMN
** file_format==3 Version 3.1.4. // ditto but with non-NULL defaults
** file_format==4 Version 3.3.0. // DESC indices. Boolean constants
*/
pDb->pSchema->file_format = meta[1];
if( pDb->pSchema->file_format==0 ){
pDb->pSchema->file_format = 1;
}
if( pDb->pSchema->file_format>SQLITE_MAX_FILE_FORMAT ){
sqlite3BtreeCloseCursor(curMain);
sqlite3SetString(pzErrMsg, "unsupported file format", (char*)0);
return SQLITE_ERROR;
}
/* Read the schema information out of the schema tables
*/
assert( db->init.busy );
if( rc==SQLITE_EMPTY ){
/* For an empty database, there is nothing to read */
rc = SQLITE_OK;
}else{
char *zSql;
zSql = sqlite3MPrintf(
"SELECT name, rootpage, sql FROM '%q'.%s",
db->aDb[iDb].zName, zMasterName);
sqlite3SafetyOff(db);
rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0);
if( rc==SQLITE_ABORT ) rc = initData.rc;
sqlite3SafetyOn(db);
sqliteFree(zSql);
#ifndef SQLITE_OMIT_ANALYZE
if( rc==SQLITE_OK ){
sqlite3AnalysisLoad(db, iDb);
}
#endif
sqlite3BtreeCloseCursor(curMain);
}
if( sqlite3MallocFailed() ){
/* sqlite3SetString(pzErrMsg, "out of memory", (char*)0); */
rc = SQLITE_NOMEM;
sqlite3ResetInternalSchema(db, 0);
}
if( rc==SQLITE_OK ){
DbSetProperty(db, iDb, DB_SchemaLoaded);
}else{
sqlite3ResetInternalSchema(db, iDb);
}
return rc;
}
int sqlite3RunParser1(Parse *pParse, const char *zSql, int sqlLen, char **pzErrMsg) {
int nErr = 0;
int i;
void *pEngine;
int tokenType;
int lastTokenParsed = -1;
// sqlite3 *db = pParse->db;
extern void *sqlite3ParserAlloc(void*(*)(int));
extern void sqlite3ParserFree(void*, void(*)(void*));
extern int sqlite3Parser(void*, int, Token, Parse*);
//db->flags &= ~SQLITE_Interrupt;
pParse->flags &= ~SQLITE_Interrupt;
pParse->rc = SQLITE_OK;
i = 0;
pEngine = sqlite3ParserAlloc((void*(*)(int))sqlite3MallocX);
if( pEngine==0 ){
return SQLITE_NOMEM;
}
assert( pParse->sLastToken.dyn==0 );
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
assert( pParse->nVarExpr==0 );
assert( pParse->nVarExprAlloc==0 );
assert( pParse->apVarExpr==0 );
pParse->zTail = pParse->zSql = zSql;
while( !sqlite3MallocFailed() && /*zSql[i]!=0*/ i < sqlLen ){
assert( i>=0 );
pParse->sLastToken.z = (u8*)&zSql[i];
assert( pParse->sLastToken.dyn==0 );
pParse->sLastToken.n = getToken((unsigned char*)&zSql[i],&tokenType);
i += pParse->sLastToken.n;
if (tokenType != TK_SPACE) {
TokenItem tokenItem;
tokenItem.token = pParse->sLastToken;
tokenItem.tokenType = tokenType;
sqlite3TokenArrayAppend(&pParse->tokens, &tokenItem);
}
switch( tokenType ){
case TK_SPACE:
case TK_COMMENT: {
//if( (db->flags & SQLITE_Interrupt)!=0 ){
if( (pParse->flags & SQLITE_Interrupt)!=0 ){
pParse->rc = SQLITE_INTERRUPT;
sqlite3SetString(pzErrMsg, "interrupt", (char*)0);
goto abort_parse;
}
break;
}
case TK_ILLEGAL: {
if( pzErrMsg ){
sqliteFree(*pzErrMsg);
*pzErrMsg = sqlite3MPrintf("unrecognized token: \"%T\"",
&pParse->sLastToken);
}
nErr++;
goto abort_parse;
}
case TK_SEMI: {
pParse->zTail = &zSql[i];
/* Fall thru into the default case */
}
default: {
sqlite3Parser(pEngine, tokenType, pParse->sLastToken, pParse);
lastTokenParsed = tokenType;
if( pParse->rc!=SQLITE_OK ){
goto abort_parse;
}
break;
}
}
}
abort_parse:
while(!sqlite3MallocFailed() && i < sqlLen) {
pParse->sLastToken.z = (u8*)&zSql[i];
assert( pParse->sLastToken.dyn==0 );
pParse->sLastToken.n = getToken((unsigned char*)&zSql[i],&tokenType);
i += pParse->sLastToken.n;
if (tokenType != TK_SPACE) {
TokenItem tokenItem;
tokenItem.token = pParse->sLastToken;
tokenItem.tokenType = tokenType;
sqlite3TokenArrayAppend(&pParse->tokens, &tokenItem);
}
}
if( zSql[i]==0 && nErr==0 && pParse->rc==SQLITE_OK ){
if( lastTokenParsed!=TK_SEMI ){
sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse);
pParse->zTail = &zSql[i];
}
sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
}
sqlite3ParserFree(pEngine, sqlite3FreeX);
if( sqlite3MallocFailed() ){
pParse->rc = SQLITE_NOMEM;
}
if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){
sqlite3SetString(&pParse->zErrMsg, sqlite3ErrStr(pParse->rc), (char*)0);
}
if( pParse->zErrMsg ){
if( pzErrMsg && *pzErrMsg==0 ){
*pzErrMsg = pParse->zErrMsg;
}else{
sqliteFree(pParse->zErrMsg);
}
pParse->zErrMsg = 0;
if( !nErr ) nErr++;
}
/* if( pParse->pVdbe && pParse->nErr>0 && pParse->nested==0 ){ */
/* sqlite3VdbeDelete(pParse->pVdbe); */
/* pParse->pVdbe = 0; */
/* } */
/* #ifndef SQLITE_OMIT_SHARED_CACHE */
/* if( pParse->nested==0 ){ */
/* sqliteFree(pParse->aTableLock); */
/* pParse->aTableLock = 0; */
/* pParse->nTableLock = 0; */
/* } */
/* #endif */
//sqlite3DeleteTable(pParse->db, pParse->pNewTable);
//sqlite3DeleteTrigger(pParse->pNewTrigger);
// sqliteFree(pParse->apVarExpr);
if( nErr>0 && (pParse->rc==SQLITE_OK || pParse->rc==SQLITE_DONE) ){
pParse->rc = SQLITE_ERROR;
}
if( pParse->rc==SQLITE_DONE ) {
pParse->rc = SQLITE_OK;
}
return nErr;
}
/*
** Run the parser on the given SQL string. The parser structure is
** passed in. An SQLITE_ status code is returned. If an error occurs
** and pzErrMsg!=NULL then an error message might be written into
** memory obtained from malloc() and *pzErrMsg made to point to that
** error message. Or maybe not.
*/
int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzErrMsg){
int nErr = 0;
int i;
void *pEngine;
int tokenType;
int lastTokenParsed = -1;
sqlite3 *db = pParse->db;
extern void *sqlite3ParserAlloc(void*(*)(int));
extern void sqlite3ParserFree(void*, void(*)(void*));
extern int sqlite3Parser(void*, int, Token, Parse*);
db->flags &= ~SQLITE_Interrupt;
pParse->rc = SQLITE_OK;
i = 0;
pEngine = sqlite3ParserAlloc((void*(*)(int))sqlite3MallocX);
if( pEngine==0 ){
sqlite3SetString(pzErrMsg, "out of memory", (char*)0);
return SQLITE_NOMEM;
}
assert( pParse->sLastToken.dyn==0 );
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
assert( pParse->nVarExpr==0 );
assert( pParse->nVarExprAlloc==0 );
assert( pParse->apVarExpr==0 );
pParse->zTail = pParse->zSql = zSql;
while( sqlite3_malloc_failed==0 && zSql[i]!=0 ){
assert( i>=0 );
pParse->sLastToken.z = &zSql[i];
assert( pParse->sLastToken.dyn==0 );
pParse->sLastToken.n = getToken((unsigned char*)&zSql[i],&tokenType);
i += pParse->sLastToken.n;
switch( tokenType ){
case TK_SPACE:
case TK_COMMENT: {
if( (db->flags & SQLITE_Interrupt)!=0 ){
pParse->rc = SQLITE_INTERRUPT;
sqlite3SetString(pzErrMsg, "interrupt", (char*)0);
goto abort_parse;
}
break;
}
case TK_ILLEGAL: {
if( pzErrMsg ){
sqliteFree(*pzErrMsg);
*pzErrMsg = sqlite3MPrintf("unrecognized token: \"%T\"",
&pParse->sLastToken);
}
nErr++;
goto abort_parse;
}
case TK_SEMI: {
pParse->zTail = &zSql[i];
/* Fall thru into the default case */
}
default: {
sqlite3Parser(pEngine, tokenType, pParse->sLastToken, pParse);
lastTokenParsed = tokenType;
if( pParse->rc!=SQLITE_OK ){
goto abort_parse;
}
break;
}
}
}
abort_parse:
if( zSql[i]==0 && nErr==0 && pParse->rc==SQLITE_OK ){
if( lastTokenParsed!=TK_SEMI ){
sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse);
pParse->zTail = &zSql[i];
}
sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
}
sqlite3ParserFree(pEngine, sqlite3FreeX);
if( sqlite3_malloc_failed ){
pParse->rc = SQLITE_NOMEM;
}
if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){
sqlite3SetString(&pParse->zErrMsg, sqlite3ErrStr(pParse->rc),
(char*)0);
}
if( pParse->zErrMsg ){
if( pzErrMsg && *pzErrMsg==0 ){
*pzErrMsg = pParse->zErrMsg;
}else{
sqliteFree(pParse->zErrMsg);
}
pParse->zErrMsg = 0;
if( !nErr ) nErr++;
}
if( pParse->pVdbe && pParse->nErr>0 && pParse->nested==0 ){
sqlite3VdbeDelete(pParse->pVdbe);
pParse->pVdbe = 0;
}
sqlite3DeleteTable(pParse->db, pParse->pNewTable);
sqlite3DeleteTrigger(pParse->pNewTrigger);
sqliteFree(pParse->apVarExpr);
if( nErr>0 && (pParse->rc==SQLITE_OK || pParse->rc==SQLITE_DONE) ){
pParse->rc = SQLITE_ERROR;
}
return nErr;
}
/*
** Attempt to read the database schema and initialize internal
** data structures for a single database file. The index of the
** database file is given by iDb. iDb==0 is used for the main
** database. iDb==1 should never be used. iDb>=2 is used for
** auxiliary databases. Return one of the SQLITE_ error codes to
** indicate success or failure.
*/
static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){
int rc;
BtCursor *curMain;
int size;
Table *pTab;
Db *pDb;
char const *azArg[4];
int meta[10];
InitData initData;
char const *zMasterSchema;
char const *zMasterName = SCHEMA_TABLE(iDb);
/*
** The master database table has a structure like this
*/
static const char master_schema[] =
"CREATE TABLE sqlite_master(\n"
" type text,\n"
" name text,\n"
" tbl_name text,\n"
" rootpage integer,\n"
" sql text\n"
")"
;
#ifndef SQLITE_OMIT_TEMPDB
static const char temp_master_schema[] =
"CREATE TEMP TABLE sqlite_temp_master(\n"
" type text,\n"
" name text,\n"
" tbl_name text,\n"
" rootpage integer,\n"
" sql text\n"
")"
;
#else
#define temp_master_schema 0
#endif
assert( iDb>=0 && iDb<db->nDb );
assert( db->aDb[iDb].pSchema );
assert( sqlite3_mutex_held(db->mutex) );
assert( iDb==1 || sqlite3BtreeHoldsMutex(db->aDb[iDb].pBt) );
/* zMasterSchema and zInitScript are set to point at the master schema
** and initialisation script appropriate for the database being
** initialised. zMasterName is the name of the master table.
*/
if( !OMIT_TEMPDB && iDb==1 ){
zMasterSchema = temp_master_schema;
}else{
zMasterSchema = master_schema;
}
zMasterName = SCHEMA_TABLE(iDb);
/* Construct the schema tables. */
azArg[0] = zMasterName;
azArg[1] = "1";
azArg[2] = zMasterSchema;
azArg[3] = 0;
initData.db = db;
initData.iDb = iDb;
initData.rc = SQLITE_OK;
initData.pzErrMsg = pzErrMsg;
(void)sqlite3SafetyOff(db);
sqlite3InitCallback(&initData, 3, (char **)azArg, 0);
(void)sqlite3SafetyOn(db);
if( initData.rc ){
rc = initData.rc;
goto error_out;
}
pTab = sqlite3FindTable(db, zMasterName, db->aDb[iDb].zName);
if( pTab ){
pTab->tabFlags |= TF_Readonly;
}
/* Create a cursor to hold the database open
*/
pDb = &db->aDb[iDb];
if( pDb->pBt==0 ){
if( !OMIT_TEMPDB && iDb==1 ){
DbSetProperty(db, 1, DB_SchemaLoaded);
}
return SQLITE_OK;
}
curMain = sqlite3MallocZero(sqlite3BtreeCursorSize());
if( !curMain ){
rc = SQLITE_NOMEM;
goto error_out;
}
sqlite3BtreeEnter(pDb->pBt);
rc = sqlite3BtreeCursor(pDb->pBt, MASTER_ROOT, 0, 0, curMain);
if( rc!=SQLITE_OK && rc!=SQLITE_EMPTY ){
sqlite3SetString(pzErrMsg, db, "%s", sqlite3ErrStr(rc));
goto initone_error_out;
}
/* Get the database meta information.
**
** Meta values are as follows:
** meta[0] Schema cookie. Changes with each schema change.
** meta[1] File format of schema layer.
** meta[2] Size of the page cache.
** meta[3] Use freelist if 0. Autovacuum if greater than zero.
** meta[4] Db text encoding. 1:UTF-8 2:UTF-16LE 3:UTF-16BE
** meta[5] The user cookie. Used by the application.
** meta[6] Incremental-vacuum flag.
** meta[7]
** meta[8]
** meta[9]
**
** Note: The #defined SQLITE_UTF* symbols in sqliteInt.h correspond to
** the possible values of meta[4].
*/
if( rc==SQLITE_OK ){
int i;
for(i=0; i<ArraySize(meta); i++){
rc = sqlite3BtreeGetMeta(pDb->pBt, i+1, (u32 *)&meta[i]);
if( rc ){
sqlite3SetString(pzErrMsg, db, "%s", sqlite3ErrStr(rc));
goto initone_error_out;
}
}
}else{
memset(meta, 0, sizeof(meta));
}
pDb->pSchema->schema_cookie = meta[0];
/* If opening a non-empty database, check the text encoding. For the
** main database, set sqlite3.enc to the encoding of the main database.
** For an attached db, it is an error if the encoding is not the same
** as sqlite3.enc.
*/
if( meta[4] ){ /* text encoding */
if( iDb==0 ){
/* If opening the main database, set ENC(db). */
ENC(db) = (u8)meta[4];
db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 6, 0);
}else{
/* If opening an attached database, the encoding much match ENC(db) */
if( meta[4]!=ENC(db) ){
sqlite3SetString(pzErrMsg, db, "attached databases must use the same"
" text encoding as main database");
rc = SQLITE_ERROR;
goto initone_error_out;
}
}
}else{
DbSetProperty(db, iDb, DB_Empty);
}
pDb->pSchema->enc = ENC(db);
if( pDb->pSchema->cache_size==0 ){
size = meta[2];
if( size==0 ){ size = SQLITE_DEFAULT_CACHE_SIZE; }
if( size<0 ) size = -size;
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
/*
** file_format==1 Version 3.0.0.
** file_format==2 Version 3.1.3. // ALTER TABLE ADD COLUMN
** file_format==3 Version 3.1.4. // ditto but with non-NULL defaults
** file_format==4 Version 3.3.0. // DESC indices. Boolean constants
*/
pDb->pSchema->file_format = (u8)meta[1];
if( pDb->pSchema->file_format==0 ){
pDb->pSchema->file_format = 1;
}
if( pDb->pSchema->file_format>SQLITE_MAX_FILE_FORMAT ){
sqlite3SetString(pzErrMsg, db, "unsupported file format");
rc = SQLITE_ERROR;
goto initone_error_out;
}
/* Ticket #2804: When we open a database in the newer file format,
** clear the legacy_file_format pragma flag so that a VACUUM will
** not downgrade the database and thus invalidate any descending
** indices that the user might have created.
*/
if( iDb==0 && meta[1]>=4 ){
db->flags &= ~SQLITE_LegacyFileFmt;
}
/* Read the schema information out of the schema tables
*/
assert( db->init.busy );
if( rc==SQLITE_EMPTY ){
/* For an empty database, there is nothing to read */
rc = SQLITE_OK;
}else{
char *zSql;
zSql = sqlite3MPrintf(db,
"SELECT name, rootpage, sql FROM '%q'.%s",
db->aDb[iDb].zName, zMasterName);
(void)sqlite3SafetyOff(db);
#ifndef SQLITE_OMIT_AUTHORIZATION
{
int (*xAuth)(void*,int,const char*,const char*,const char*,const char*);
xAuth = db->xAuth;
db->xAuth = 0;
#endif
rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0);
#ifndef SQLITE_OMIT_AUTHORIZATION
db->xAuth = xAuth;
}
#endif
if( rc==SQLITE_OK ) rc = initData.rc;
(void)sqlite3SafetyOn(db);
sqlite3DbFree(db, zSql);
#ifndef SQLITE_OMIT_ANALYZE
if( rc==SQLITE_OK ){
sqlite3AnalysisLoad(db, iDb);
}
#endif
}
if( db->mallocFailed ){
rc = SQLITE_NOMEM;
sqlite3ResetInternalSchema(db, 0);
}
if( rc==SQLITE_OK || (db->flags&SQLITE_RecoveryMode)){
/* Black magic: If the SQLITE_RecoveryMode flag is set, then consider
** the schema loaded, even if errors occurred. In this situation the
** current sqlite3_prepare() operation will fail, but the following one
** will attempt to compile the supplied statement against whatever subset
** of the schema was loaded before the error occurred. The primary
** purpose of this is to allow access to the sqlite_master table
** even when its contents have been corrupted.
*/
DbSetProperty(db, iDb, DB_SchemaLoaded);
rc = SQLITE_OK;
}
/* Jump here for an error that occurs after successfully allocating
** curMain and calling sqlite3BtreeEnter(). For an error that occurs
** before that point, jump to error_out.
*/
initone_error_out:
sqlite3BtreeCloseCursor(curMain);
sqlite3_free(curMain);
sqlite3BtreeLeave(pDb->pBt);
error_out:
if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){
db->mallocFailed = 1;
}
return rc;
}
/*
** Attempt to read the database schema and initialize internal
** data structures for a single database file. The index of the
** database file is given by iDb. iDb==0 is used for the main
** database. iDb==1 should never be used. iDb>=2 is used for
** auxiliary databases. Return one of the SQLITE_ error codes to
** indicate success or failure.
*/
static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){
int rc;
BtCursor *curMain;
int size;
Table *pTab;
char const *azArg[5];
char zDbNum[30];
int meta[10];
InitData initData;
char const *zMasterSchema;
char const *zMasterName = SCHEMA_TABLE(iDb);
/*
** The master database table has a structure like this
*/
static const char master_schema[] =
"CREATE TABLE sqlite_master(\n"
" type text,\n"
" name text,\n"
" tbl_name text,\n"
" rootpage integer,\n"
" sql text\n"
")"
;
#ifndef SQLITE_OMIT_TEMPDB
static const char temp_master_schema[] =
"CREATE TEMP TABLE sqlite_temp_master(\n"
" type text,\n"
" name text,\n"
" tbl_name text,\n"
" rootpage integer,\n"
" sql text\n"
")"
;
#else
#define temp_master_schema 0
#endif
assert( iDb>=0 && iDb<db->nDb );
/* zMasterSchema and zInitScript are set to point at the master schema
** and initialisation script appropriate for the database being
** initialised. zMasterName is the name of the master table.
*/
if( !OMIT_TEMPDB && iDb==1 ){
zMasterSchema = temp_master_schema;
}else{
zMasterSchema = master_schema;
}
zMasterName = SCHEMA_TABLE(iDb);
/* Construct the schema tables. */
sqlite3SafetyOff(db);
azArg[0] = zMasterName;
azArg[1] = "1";
azArg[2] = zMasterSchema;
sprintf(zDbNum, "%d", iDb);
azArg[3] = zDbNum;
azArg[4] = 0;
initData.db = db;
initData.pzErrMsg = pzErrMsg;
rc = sqlite3InitCallback(&initData, 4, (char **)azArg, 0);
if( rc!=SQLITE_OK ){
sqlite3SafetyOn(db);
return rc;
}
pTab = sqlite3FindTable(db, zMasterName, db->aDb[iDb].zName);
if( pTab ){
pTab->readOnly = 1;
}
sqlite3SafetyOn(db);
/* Create a cursor to hold the database open
*/
if( db->aDb[iDb].pBt==0 ){
if( !OMIT_TEMPDB && iDb==1 ) DbSetProperty(db, 1, DB_SchemaLoaded);
return SQLITE_OK;
}
rc = sqlite3BtreeCursor(db->aDb[iDb].pBt, MASTER_ROOT, 0, 0, 0, &curMain);
if( rc!=SQLITE_OK && rc!=SQLITE_EMPTY ){
sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
return rc;
}
/* Get the database meta information.
**
** Meta values are as follows:
** meta[0] Schema cookie. Changes with each schema change.
** meta[1] File format of schema layer.
** meta[2] Size of the page cache.
** meta[3] Use freelist if 0. Autovacuum if greater than zero.
** meta[4] Db text encoding. 1:UTF-8 3:UTF-16 LE 4:UTF-16 BE
** meta[5] The user cookie. Used by the application.
** meta[6]
** meta[7]
** meta[8]
** meta[9]
**
** Note: The hash defined SQLITE_UTF* symbols in sqliteInt.h correspond to
** the possible values of meta[4].
*/
if( rc==SQLITE_OK ){
int i;
for(i=0; rc==SQLITE_OK && i<sizeof(meta)/sizeof(meta[0]); i++){
rc = sqlite3BtreeGetMeta(db->aDb[iDb].pBt, i+1, (u32 *)&meta[i]);
}
if( rc ){
sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
sqlite3BtreeCloseCursor(curMain);
return rc;
}
}else{
memset(meta, 0, sizeof(meta));
}
db->aDb[iDb].schema_cookie = meta[0];
/* If opening a non-empty database, check the text encoding. For the
** main database, set sqlite3.enc to the encoding of the main database.
** For an attached db, it is an error if the encoding is not the same
** as sqlite3.enc.
*/
if( meta[4] ){ /* text encoding */
if( iDb==0 ){
/* If opening the main database, set db->enc. */
db->enc = (u8)meta[4];
db->pDfltColl = sqlite3FindCollSeq(db, db->enc, "BINARY", 6, 0);
}else{
/* If opening an attached database, the encoding much match db->enc */
if( meta[4]!=db->enc ){
sqlite3BtreeCloseCursor(curMain);
sqlite3SetString(pzErrMsg, "attached databases must use the same"
" text encoding as main database", (char*)0);
return SQLITE_ERROR;
}
}
}
size = meta[2];
if( size==0 ){ size = MAX_PAGES; }
db->aDb[iDb].cache_size = size;
if( iDb==0 ){
db->file_format = meta[1];
if( db->file_format==0 ){
/* This happens if the database was initially empty */
db->file_format = 1;
}
if( db->file_format==2 || db->file_format==3 ){
/* File format 2 is treated exactly as file format 1. New
** databases are created with file format 1.
*/
db->file_format = 1;
}
}
/*
** file_format==1 Version 3.0.0.
** file_format==2 Version 3.1.3.
** file_format==3 Version 3.1.4.
**
** Version 3.0 can only use files with file_format==1. Version 3.1.3
** can read and write files with file_format==1 or file_format==2.
** Version 3.1.4 can read and write file formats 1, 2 and 3.
*/
if( meta[1]>3 ){
sqlite3BtreeCloseCursor(curMain);
sqlite3SetString(pzErrMsg, "unsupported file format", (char*)0);
return SQLITE_ERROR;
}
sqlite3BtreeSetCacheSize(db->aDb[iDb].pBt, db->aDb[iDb].cache_size);
/* Read the schema information out of the schema tables
*/
assert( db->init.busy );
if( rc==SQLITE_EMPTY ){
/* For an empty database, there is nothing to read */
rc = SQLITE_OK;
}else{
char *zSql;
zSql = sqlite3MPrintf(
"SELECT name, rootpage, sql, '%s' FROM '%q'.%s",
zDbNum, db->aDb[iDb].zName, zMasterName);
sqlite3SafetyOff(db);
rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0);
sqlite3SafetyOn(db);
sqliteFree(zSql);
sqlite3BtreeCloseCursor(curMain);
}
if( sqlite3_malloc_failed ){
sqlite3SetString(pzErrMsg, "out of memory", (char*)0);
rc = SQLITE_NOMEM;
sqlite3ResetInternalSchema(db, 0);
}
if( rc==SQLITE_OK ){
DbSetProperty(db, iDb, DB_SchemaLoaded);
}else{
sqlite3ResetInternalSchema(db, iDb);
}
return rc;
}
/*
** Run the parser on the given SQL string. The parser structure is
** passed in. An SQLITE_ status code is returned. If an error occurs
** then an and attempt is made to write an error message into
** memory obtained from sqlite3_malloc() and to make *pzErrMsg point to that
** error message.
*/
int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzErrMsg){
int nErr = 0; /* Number of errors encountered */
int i; /* Loop counter */
void *pEngine; /* The LEMON-generated LALR(1) parser */
int tokenType; /* type of the next token */
int lastTokenParsed = -1; /* type of the previous token */
u8 enableLookaside; /* Saved value of db->lookaside.bEnabled */
sqlite3 *db = pParse->db; /* The database connection */
int mxSqlLen; /* Max length of an SQL string */
mxSqlLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH];
if( db->activeVdbeCnt==0 ){
db->u1.isInterrupted = 0;
}
pParse->rc = SQLITE_OK;
pParse->zTail = pParse->zSql = zSql;
i = 0;
assert( pzErrMsg!=0 );
pEngine = sqlite3ParserAlloc((void*(*)(size_t))sqlite3Malloc);
if( pEngine==0 ){
db->mallocFailed = 1;
return SQLITE_NOMEM;
}
assert( pParse->sLastToken.dyn==0 );
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
assert( pParse->nVarExpr==0 );
assert( pParse->nVarExprAlloc==0 );
assert( pParse->apVarExpr==0 );
enableLookaside = db->lookaside.bEnabled;
if( db->lookaside.pStart ) db->lookaside.bEnabled = 1;
pParse->sLastToken.quoted = 1;
while( !db->mallocFailed && zSql[i]!=0 ){
assert( i>=0 );
pParse->sLastToken.z = (u8*)&zSql[i];
assert( pParse->sLastToken.dyn==0 );
assert( pParse->sLastToken.quoted );
pParse->sLastToken.n = sqlite3GetToken((unsigned char*)&zSql[i],&tokenType);
i += pParse->sLastToken.n;
if( i>mxSqlLen ){
pParse->rc = SQLITE_TOOBIG;
break;
}
switch( tokenType ){
case TK_SPACE: {
if( db->u1.isInterrupted ){
pParse->rc = SQLITE_INTERRUPT;
sqlite3SetString(pzErrMsg, db, "interrupt");
goto abort_parse;
}
break;
}
case TK_ILLEGAL: {
sqlite3DbFree(db, *pzErrMsg);
*pzErrMsg = sqlite3MPrintf(db, "unrecognized token: \"%T\"",
&pParse->sLastToken);
nErr++;
goto abort_parse;
}
case TK_SEMI: {
pParse->zTail = &zSql[i];
/* Fall thru into the default case */
}
default: {
sqlite3Parser(pEngine, tokenType, pParse->sLastToken, pParse);
lastTokenParsed = tokenType;
if( pParse->rc!=SQLITE_OK ){
goto abort_parse;
}
break;
}
}
}
abort_parse:
if( zSql[i]==0 && nErr==0 && pParse->rc==SQLITE_OK ){
if( lastTokenParsed!=TK_SEMI ){
sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse);
pParse->zTail = &zSql[i];
}
sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
}
#ifdef YYTRACKMAXSTACKDEPTH
sqlite3StatusSet(SQLITE_STATUS_PARSER_STACK,
sqlite3ParserStackPeak(pEngine)
);
#endif /* YYDEBUG */
sqlite3ParserFree(pEngine, sqlite3_free);
db->lookaside.bEnabled = enableLookaside;
if( db->mallocFailed ){
pParse->rc = SQLITE_NOMEM;
}
if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){
sqlite3SetString(&pParse->zErrMsg, db, "%s", sqlite3ErrStr(pParse->rc));
}
if( pParse->zErrMsg ){
if( *pzErrMsg==0 ){
*pzErrMsg = pParse->zErrMsg;
}else{
sqlite3DbFree(db, pParse->zErrMsg);
}
pParse->zErrMsg = 0;
nErr++;
}
if( pParse->pVdbe && pParse->nErr>0 && pParse->nested==0 ){
sqlite3VdbeDelete(pParse->pVdbe);
pParse->pVdbe = 0;
}
#ifndef SQLITE_OMIT_SHARED_CACHE
if( pParse->nested==0 ){
sqlite3DbFree(db, pParse->aTableLock);
pParse->aTableLock = 0;
pParse->nTableLock = 0;
}
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
sqlite3DbFree(db, pParse->apVtabLock);
#endif
if( !IN_DECLARE_VTAB ){
/* If the pParse->declareVtab flag is set, do not delete any table
** structure built up in pParse->pNewTable. The calling code (see vtab.c)
** will take responsibility for freeing the Table structure.
*/
sqlite3DeleteTable(pParse->pNewTable);
}
sqlite3DeleteTrigger(db, pParse->pNewTrigger);
sqlite3DbFree(db, pParse->apVarExpr);
sqlite3DbFree(db, pParse->aAlias);
while( pParse->pZombieTab ){
Table *p = pParse->pZombieTab;
pParse->pZombieTab = p->pNextZombie;
sqlite3DeleteTable(p);
}
if( nErr>0 && (pParse->rc==SQLITE_OK || pParse->rc==SQLITE_DONE) ){
pParse->rc = SQLITE_ERROR;
}
return nErr;
}
/*
** Give a listing of the program in the virtual machine.
**
** The interface is the same as sqlite3VdbeExec(). But instead of
** running the code, it invokes the callback once for each instruction.
** This feature is used to implement "EXPLAIN".
*/
int sqlite3VdbeList(
Vdbe *p /* The VDBE */
){
sqlite3 *db = p->db;
int i;
int rc = SQLITE_OK;
assert( p->explain );
/* Even though this opcode does not put dynamic strings onto the
** the stack, they may become dynamic if the user calls
** sqlite3_column_text16(), causing a translation to UTF-16 encoding.
*/
if( p->pTos==&p->aStack[4] ){
releaseMemArray(p->aStack, 5);
}
p->resOnStack = 0;
i = p->pc++;
if( i>=p->nOp ){
p->rc = SQLITE_OK;
rc = SQLITE_DONE;
}else if( db->flags & SQLITE_Interrupt ){
db->flags &= ~SQLITE_Interrupt;
if( db->magic!=SQLITE_MAGIC_BUSY ){
p->rc = SQLITE_MISUSE;
}else{
p->rc = SQLITE_INTERRUPT;
}
rc = SQLITE_ERROR;
sqlite3SetString(&p->zErrMsg, sqlite3ErrStr(p->rc), (char*)0);
}else{
Op *pOp = &p->aOp[i];
Mem *pMem = p->aStack;
pMem->flags = MEM_Int;
pMem->type = SQLITE_INTEGER;
pMem->i = i; /* Program counter */
pMem++;
pMem->flags = MEM_Static|MEM_Str|MEM_Term;
pMem->z = sqlite3OpcodeNames[pOp->opcode]; /* Opcode */
pMem->n = strlen(pMem->z);
pMem->type = SQLITE_TEXT;
pMem->enc = SQLITE_UTF8;
pMem++;
pMem->flags = MEM_Int;
pMem->i = pOp->p1; /* P1 */
pMem->type = SQLITE_INTEGER;
pMem++;
pMem->flags = MEM_Int;
pMem->i = pOp->p2; /* P2 */
pMem->type = SQLITE_INTEGER;
pMem++;
pMem->flags = MEM_Short|MEM_Str|MEM_Term; /* P3 */
pMem->z = displayP3(pOp, pMem->zShort, sizeof(pMem->zShort));
pMem->type = SQLITE_TEXT;
pMem->enc = SQLITE_UTF8;
p->nResColumn = 5;
p->pTos = pMem;
p->rc = SQLITE_OK;
p->resOnStack = 1;
rc = SQLITE_ROW;
}
return rc;
}
static int
bdb_run_parser(Parse *pParse, const char *zSql, char **pzErrMsg) {
int nErr = 0;
int i;
void *pEngine;
int tokenType;
int lastTokenParsed = -1;
pParse->rc = SQLITE_OK;
pParse->zTail = pParse->zSql = zSql;
i = 0;
pEngine = sqlite3ParserAlloc((void*(*)(size_t))malloc);
if ( pEngine==0 ) {
return SQLITE_NOMEM;
}
while (zSql[i]!=0 ) {
assert( i>=0 );
pParse->sLastToken.z = (u8*)&zSql[i];
assert( pParse->sLastToken.dyn==0 );
pParse->sLastToken.n = getToken((unsigned char*)&zSql[i],&tokenType);
i += pParse->sLastToken.n;
if ( i>SQLITE_MAX_SQL_LENGTH ) {
pParse->rc = SQLITE_TOOBIG;
break;
}
switch ( tokenType ) {
case TK_SPACE: {
break;
}
case TK_COMMENT: {
parse_hint_comment(&pParse->sLastToken);
break;
}
case TK_ILLEGAL: {
if ( pzErrMsg ) {
free(*pzErrMsg);
*pzErrMsg = sqlite3MPrintf(0, "unrecognized token: \"%T\"",
&pParse->sLastToken);
}
nErr++;
goto abort_parse;
}
case TK_SEMI: {
pParse->zTail = &zSql[i];
/* Fall thru into the default case */
}
default: {
preparser(pEngine, tokenType, pParse->sLastToken, pParse);
lastTokenParsed = tokenType;
if ( pParse->rc!=SQLITE_OK ) {
goto abort_parse;
}
break;
}
}
}
abort_parse:
if ( zSql[i]==0 && nErr==0 && pParse->rc==SQLITE_OK ) {
sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse);
pParse->zTail = &zSql[i];
sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
}
sqlite3ParserFree(pEngine,free);
if ( 0 ) {
pParse->rc = SQLITE_NOMEM;
}
if ( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ) {
setString(&pParse->zErrMsg, sqlite3ErrStr(pParse->rc), (char*)0);
}
if ( pParse->zErrMsg ) {
if ( pzErrMsg && *pzErrMsg==0 ) {
*pzErrMsg = pParse->zErrMsg;
} else {
free(pParse->zErrMsg);
}
pParse->zErrMsg = 0;
nErr++;
}
if ( nErr>0 && (pParse->rc==SQLITE_OK || pParse->rc==SQLITE_DONE) ) {
pParse->rc = SQLITE_ERROR;
}
return nErr;
}
/*
** Run the parser on the given SQL string. The parser structure is
** passed in. An SQLITE_ status code is returned. If an error occurs
** then an and attempt is made to write an error message into
** memory obtained from sqlite3_malloc() and to make *pzErrMsg point to that
** error message.
*/
int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzErrMsg){
int nErr = 0; /* Number of errors encountered */
void *pEngine; /* The LEMON-generated LALR(1) parser */
int n = 0; /* Length of the next token token */
int tokenType; /* type of the next token */
int lastTokenParsed = -1; /* type of the previous token */
sqlite3 *db = pParse->db; /* The database connection */
int mxSqlLen; /* Max length of an SQL string */
#ifdef sqlite3Parser_ENGINEALWAYSONSTACK
yyParser sEngine; /* Space to hold the Lemon-generated Parser object */
#endif
assert( zSql!=0 );
mxSqlLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH];
if( db->nVdbeActive==0 ){
db->u1.isInterrupted = 0;
}
pParse->rc = SQLITE_OK;
pParse->zTail = zSql;
assert( pzErrMsg!=0 );
#ifdef SQLITE_DEBUG
if( db->flags & SQLITE_ParserTrace ){
printf("parser: [[[%s]]]\n", zSql);
sqlite3ParserTrace(stdout, "parser: ");
}else{
sqlite3ParserTrace(0, 0);
}
#endif
#ifdef sqlite3Parser_ENGINEALWAYSONSTACK
pEngine = &sEngine;
sqlite3ParserInit(pEngine, pParse);
#else
pEngine = sqlite3ParserAlloc(sqlite3Malloc, pParse);
if( pEngine==0 ){
sqlite3OomFault(db);
return SQLITE_NOMEM_BKPT;
}
#endif
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
assert( pParse->pVList==0 );
while( 1 ){
n = sqlite3GetToken((u8*)zSql, &tokenType);
mxSqlLen -= n;
if( mxSqlLen<0 ){
pParse->rc = SQLITE_TOOBIG;
break;
}
#ifndef SQLITE_OMIT_WINDOWFUNC
if( tokenType>=TK_WINDOW ){
assert( tokenType==TK_SPACE || tokenType==TK_OVER || tokenType==TK_FILTER
|| tokenType==TK_ILLEGAL || tokenType==TK_WINDOW
);
#else
if( tokenType>=TK_SPACE ){
assert( tokenType==TK_SPACE || tokenType==TK_ILLEGAL );
#endif /* SQLITE_OMIT_WINDOWFUNC */
if( db->u1.isInterrupted ){
pParse->rc = SQLITE_INTERRUPT;
break;
}
if( tokenType==TK_SPACE ){
zSql += n;
continue;
}
if( zSql[0]==0 ){
/* Upon reaching the end of input, call the parser two more times
** with tokens TK_SEMI and 0, in that order. */
if( lastTokenParsed==TK_SEMI ){
tokenType = 0;
}else if( lastTokenParsed==0 ){
break;
}else{
tokenType = TK_SEMI;
}
n = 0;
#ifndef SQLITE_OMIT_WINDOWFUNC
}else if( tokenType==TK_WINDOW ){
assert( n==6 );
tokenType = analyzeWindowKeyword((const u8*)&zSql[6]);
}else if( tokenType==TK_OVER ){
assert( n==4 );
tokenType = analyzeOverKeyword((const u8*)&zSql[4], lastTokenParsed);
}else if( tokenType==TK_FILTER ){
assert( n==6 );
tokenType = analyzeFilterKeyword((const u8*)&zSql[6], lastTokenParsed);
#endif /* SQLITE_OMIT_WINDOWFUNC */
}else{
sqlite3ErrorMsg(pParse, "unrecognized token: \"%.*s\"", n, zSql);
break;
}
}
pParse->sLastToken.z = zSql;
pParse->sLastToken.n = n;
sqlite3Parser(pEngine, tokenType, pParse->sLastToken);
lastTokenParsed = tokenType;
zSql += n;
if( pParse->rc!=SQLITE_OK || db->mallocFailed ) break;
}
assert( nErr==0 );
#ifdef YYTRACKMAXSTACKDEPTH
sqlite3_mutex_enter(sqlite3MallocMutex());
sqlite3StatusHighwater(SQLITE_STATUS_PARSER_STACK,
sqlite3ParserStackPeak(pEngine)
);
sqlite3_mutex_leave(sqlite3MallocMutex());
#endif /* YYDEBUG */
#ifdef sqlite3Parser_ENGINEALWAYSONSTACK
sqlite3ParserFinalize(pEngine);
#else
sqlite3ParserFree(pEngine, sqlite3_free);
#endif
if( db->mallocFailed ){
pParse->rc = SQLITE_NOMEM_BKPT;
}
if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){
pParse->zErrMsg = sqlite3MPrintf(db, "%s", sqlite3ErrStr(pParse->rc));
}
assert( pzErrMsg!=0 );
if( pParse->zErrMsg ){
*pzErrMsg = pParse->zErrMsg;
sqlite3_log(pParse->rc, "%s in \"%s\"",
*pzErrMsg, pParse->zTail);
pParse->zErrMsg = 0;
nErr++;
}
pParse->zTail = zSql;
if( pParse->pVdbe && pParse->nErr>0 && pParse->nested==0 ){
sqlite3VdbeDelete(pParse->pVdbe);
pParse->pVdbe = 0;
}
#ifndef SQLITE_OMIT_SHARED_CACHE
if( pParse->nested==0 ){
sqlite3DbFree(db, pParse->aTableLock);
pParse->aTableLock = 0;
pParse->nTableLock = 0;
}
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
sqlite3_free(pParse->apVtabLock);
#endif
if( !IN_SPECIAL_PARSE ){
/* If the pParse->declareVtab flag is set, do not delete any table
** structure built up in pParse->pNewTable. The calling code (see vtab.c)
** will take responsibility for freeing the Table structure.
*/
sqlite3DeleteTable(db, pParse->pNewTable);
}
if( !IN_RENAME_OBJECT ){
sqlite3DeleteTrigger(db, pParse->pNewTrigger);
}
if( pParse->pWithToFree ) sqlite3WithDelete(db, pParse->pWithToFree);
sqlite3DbFree(db, pParse->pVList);
while( pParse->pAinc ){
AutoincInfo *p = pParse->pAinc;
pParse->pAinc = p->pNext;
sqlite3DbFreeNN(db, p);
}
while( pParse->pZombieTab ){
Table *p = pParse->pZombieTab;
pParse->pZombieTab = p->pNextZombie;
sqlite3DeleteTable(db, p);
}
assert( nErr==0 || pParse->rc!=SQLITE_OK );
return nErr;
}
#ifdef SQLITE_ENABLE_NORMALIZE
/*
** Insert a single space character into pStr if the current string
** ends with an identifier
*/
static void addSpaceSeparator(sqlite3_str *pStr){
if( pStr->nChar && sqlite3IsIdChar(pStr->zText[pStr->nChar-1]) ){
sqlite3_str_append(pStr, " ", 1);
}
}
/*
** Compute a normalization of the SQL given by zSql[0..nSql-1]. Return
** the normalization in space obtained from sqlite3DbMalloc(). Or return
** NULL if anything goes wrong or if zSql is NULL.
*/
char *sqlite3Normalize(
Vdbe *pVdbe, /* VM being reprepared */
const char *zSql /* The original SQL string */
){
sqlite3 *db; /* The database connection */
int i; /* Next unread byte of zSql[] */
int n; /* length of current token */
int tokenType; /* type of current token */
int prevType = 0; /* Previous non-whitespace token */
int nParen; /* Number of nested levels of parentheses */
int iStartIN; /* Start of RHS of IN operator in z[] */
int nParenAtIN; /* Value of nParent at start of RHS of IN operator */
int j; /* Bytes of normalized SQL generated so far */
sqlite3_str *pStr; /* The normalized SQL string under construction */
db = sqlite3VdbeDb(pVdbe);
tokenType = -1;
nParen = iStartIN = nParenAtIN = 0;
pStr = sqlite3_str_new(db);
assert( pStr!=0 ); /* sqlite3_str_new() never returns NULL */
for(i=0; zSql[i] && pStr->accError==0; i+=n){
if( tokenType!=TK_SPACE ){
prevType = tokenType;
}
n = sqlite3GetToken((unsigned char*)zSql+i, &tokenType);
if( NEVER(n<=0) ) break;
switch( tokenType ){
case TK_SPACE: {
break;
}
case TK_NULL: {
if( prevType==TK_IS || prevType==TK_NOT ){
sqlite3_str_append(pStr, " NULL", 5);
break;
}
/* Fall through */
}
case TK_STRING:
case TK_INTEGER:
case TK_FLOAT:
case TK_VARIABLE:
case TK_BLOB: {
sqlite3_str_append(pStr, "?", 1);
break;
}
case TK_LP: {
nParen++;
if( prevType==TK_IN ){
iStartIN = pStr->nChar;
nParenAtIN = nParen;
}
sqlite3_str_append(pStr, "(", 1);
break;
}
case TK_RP: {
if( iStartIN>0 && nParen==nParenAtIN ){
assert( pStr->nChar>=iStartIN );
pStr->nChar = iStartIN+1;
sqlite3_str_append(pStr, "?,?,?", 5);
iStartIN = 0;
}
nParen--;
sqlite3_str_append(pStr, ")", 1);
break;
}
case TK_ID: {
iStartIN = 0;
j = pStr->nChar;
if( sqlite3Isquote(zSql[i]) ){
char *zId = sqlite3DbStrNDup(db, zSql+i, n);
int nId;
int eType = 0;
if( zId==0 ) break;
sqlite3Dequote(zId);
if( zSql[i]=='"' && sqlite3VdbeUsesDoubleQuotedString(pVdbe, zId) ){
sqlite3_str_append(pStr, "?", 1);
sqlite3DbFree(db, zId);
break;
}
nId = sqlite3Strlen30(zId);
if( sqlite3GetToken((u8*)zId, &eType)==nId && eType==TK_ID ){
addSpaceSeparator(pStr);
sqlite3_str_append(pStr, zId, nId);
}else{
sqlite3_str_appendf(pStr, "\"%w\"", zId);
}
sqlite3DbFree(db, zId);
}else{
addSpaceSeparator(pStr);
sqlite3_str_append(pStr, zSql+i, n);
}
while( j<pStr->nChar ){
pStr->zText[j] = sqlite3Tolower(pStr->zText[j]);
j++;
}
break;
}
case TK_SELECT: {
iStartIN = 0;
/* fall through */
}
default: {
if( sqlite3IsIdChar(zSql[i]) ) addSpaceSeparator(pStr);
j = pStr->nChar;
sqlite3_str_append(pStr, zSql+i, n);
while( j<pStr->nChar ){
pStr->zText[j] = sqlite3Toupper(pStr->zText[j]);
j++;
}
break;
}
}
}
if( tokenType!=TK_SEMI ) sqlite3_str_append(pStr, ";", 1);
return sqlite3_str_finish(pStr);
}
/*
** Run the parser on the given SQL string. The parser structure is
** passed in. An SQLITE_ status code is returned. If an error occurs
** and pzErrMsg!=NULL then an error message might be written into
** memory obtained from sqlite3_malloc() and *pzErrMsg made to point to that
** error message. Or maybe not.
*/
int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzErrMsg){
int nErr = 0;
int i;
void *pEngine;
int tokenType;
int lastTokenParsed = -1;
sqlite3 *db = pParse->db;
if( db->activeVdbeCnt==0 ){
db->u1.isInterrupted = 0;
}
pParse->rc = SQLITE_OK;
i = 0;
pEngine = sqlite3ParserAlloc((void*(*)(size_t))sqlite3_malloc);
if( pEngine==0 ){
db->mallocFailed = 1;
return SQLITE_NOMEM;
}
assert( pParse->sLastToken.dyn==0 );
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
assert( pParse->nVarExpr==0 );
assert( pParse->nVarExprAlloc==0 );
assert( pParse->apVarExpr==0 );
pParse->zTail = pParse->zSql = zSql;
while( !db->mallocFailed && zSql[i]!=0 ){
assert( i>=0 );
pParse->sLastToken.z = (u8*)&zSql[i];
assert( pParse->sLastToken.dyn==0 );
pParse->sLastToken.n = getToken((unsigned char*)&zSql[i],&tokenType);
i += pParse->sLastToken.n;
if( SQLITE_MAX_SQL_LENGTH>0 && i>SQLITE_MAX_SQL_LENGTH ){
pParse->rc = SQLITE_TOOBIG;
break;
}
switch( tokenType ){
case TK_SPACE:
case TK_COMMENT: {
if( db->u1.isInterrupted ){
pParse->rc = SQLITE_INTERRUPT;
sqlite3SetString(pzErrMsg, "interrupt", (char*)0);
goto abort_parse;
}
break;
}
case TK_ILLEGAL: {
if( pzErrMsg ){
sqlite3_free(*pzErrMsg);
*pzErrMsg = sqlite3MPrintf(db, "unrecognized token: \"%T\"",
&pParse->sLastToken);
}
nErr++;
goto abort_parse;
}
case TK_SEMI: {
pParse->zTail = &zSql[i];
/* Fall thru into the default case */
}
default: {
sqlite3Parser(pEngine, tokenType, pParse->sLastToken, pParse);
lastTokenParsed = tokenType;
if( pParse->rc!=SQLITE_OK ){
goto abort_parse;
}
break;
}
}
}
abort_parse:
if( zSql[i]==0 && nErr==0 && pParse->rc==SQLITE_OK ){
if( lastTokenParsed!=TK_SEMI ){
sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse);
pParse->zTail = &zSql[i];
}
sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
}
sqlite3ParserFree(pEngine, sqlite3_free);
if( db->mallocFailed ){
pParse->rc = SQLITE_NOMEM;
}
if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){
sqlite3SetString(&pParse->zErrMsg, sqlite3ErrStr(pParse->rc), (char*)0);
}
if( pParse->zErrMsg ){
if( pzErrMsg && *pzErrMsg==0 ){
*pzErrMsg = pParse->zErrMsg;
}else{
sqlite3_free(pParse->zErrMsg);
}
pParse->zErrMsg = 0;
nErr++;
}
if( pParse->pVdbe && pParse->nErr>0 && pParse->nested==0 ){
sqlite3VdbeDelete(pParse->pVdbe);
pParse->pVdbe = 0;
}
#ifndef SQLITE_OMIT_SHARED_CACHE
if( pParse->nested==0 ){
sqlite3_free(pParse->aTableLock);
pParse->aTableLock = 0;
pParse->nTableLock = 0;
}
#endif
if( !IN_DECLARE_VTAB ){
/* If the pParse->declareVtab flag is set, do not delete any table
** structure built up in pParse->pNewTable. The calling code (see vtab.c)
** will take responsibility for freeing the Table structure.
*/
sqlite3DeleteTable(pParse->pNewTable);
}
sqlite3DeleteTrigger(pParse->pNewTrigger);
sqlite3_free(pParse->apVarExpr);
if( nErr>0 && (pParse->rc==SQLITE_OK || pParse->rc==SQLITE_DONE) ){
pParse->rc = SQLITE_ERROR;
}
return nErr;
}
