SQLite

};

typedef struct IncrblobChannel IncrblobChannel;

/*
** There is one instance of this structure for each SQLite database
** that has been opened by the SQLite TCL interface.
**
** If this module is built with SQLITE_TEST defined (to create the SQLite
** testfixture executable), then it may be configured to use either
** sqlite3_prepare_v2() or sqlite3_prepare() to prepare SQL statements.
** If SqliteDb.bLegacyPrepare is true, sqlite3_prepare() is used.
*/
typedef struct SqliteDb SqliteDb;
struct SqliteDb {
  sqlite3 *db;               /* The "real" database structure. MUST BE FIRST */
  Tcl_Interp *interp;        /* The interpreter used for this database */
  char *zBusy;               /* The busy callback routine */
  char *zCommit;             /* The commit hook callback routine */

  SqlPreparedStmt *stmtList; /* List of prepared statements*/
  SqlPreparedStmt *stmtLast; /* Last statement in the list */
  int maxStmt;               /* The next maximum number of stmtList */
  int nStmt;                 /* Number of statements in stmtList */
  IncrblobChannel *pIncrblob;/* Linked list of open incrblob channels */
  int nStep, nSort, nIndex;  /* Statistics for most recent operation */
  int nTransaction;          /* Number of nested [transaction] methods */
#ifdef SQLITE_TEST
  int bLegacyPrepare;        /* True to use sqlite3_prepare() */
#endif
};

struct IncrblobChannel {
  sqlite3_blob *pBlob;      /* sqlite3 blob handle */
  SqliteDb *pDb;            /* Associated database connection */
  int iSeek;                /* Current seek offset */
  Tcl_Channel channel;      /* Channel identifier */

  }
  pNew->interp = pDb->interp;
  pNew->pScript = 0;
  pNew->pNext = pDb->pFunc;
  pDb->pFunc = pNew;
  return pNew;
}

/*
** Free a single SqlPreparedStmt object.
*/
static void dbFreeStmt(SqlPreparedStmt *pStmt){
#ifdef SQLITE_TEST
  if( sqlite3_sql(pStmt->pStmt)==0 ){
    Tcl_Free((char *)pStmt->zSql);
  }
#endif
  sqlite3_finalize(pStmt->pStmt);
  Tcl_Free((char *)pStmt);
}

/*
** Finalize and free a list of prepared statements
*/
static void flushStmtCache(SqliteDb *pDb){
  SqlPreparedStmt *pPreStmt;
  SqlPreparedStmt *pNext;



  for(pPreStmt = pDb->stmtList; pPreStmt; pPreStmt=pNext){
    pNext = pPreStmt->pNext;
    dbFreeStmt(pPreStmt);
  }
  pDb->nStmt = 0;
  pDb->stmtLast = 0;
  pDb->stmtList = 0;
}

/*
** TCL calls this procedure when an sqlite3 database command is
** deleted.
*/
static void DbDeleteCmd(void *db){

    }
    sqlite3_exec(pDb->db, "ROLLBACK", 0, 0, 0);
  }
  pDb->disableAuth--;

  return rc;
}

/*
** Unless SQLITE_TEST is defined, this function is a simple wrapper around
** sqlite3_prepare_v2(). If SQLITE_TEST is defined, then it uses either
** sqlite3_prepare_v2() or legacy interface sqlite3_prepare(), depending
** on whether or not the [db_use_legacy_prepare] command has been used to 
** configure the connection.
*/
static int dbPrepare(
  SqliteDb *pDb,                  /* Database object */
  const char *zSql,               /* SQL to compile */
  sqlite3_stmt **ppStmt,          /* OUT: Prepared statement */
  const char **pzOut              /* OUT: Pointer to next SQL statement */
){
#ifdef SQLITE_TEST
  if( pDb->bLegacyPrepare ){
    return sqlite3_prepare(pDb->db, zSql, -1, ppStmt, pzOut);
  }
#endif
  return sqlite3_prepare_v2(pDb->db, zSql, -1, ppStmt, pzOut);
}

/*
** Search the cache for a prepared-statement object that implements the
** first SQL statement in the buffer pointed to by parameter zIn. If
** no such prepared-statement can be found, allocate and prepare a new
** one. In either case, bind the current values of the relevant Tcl
** variables to any $var, :var or @var variables in the statement. Before

  }
  
  /* If no prepared statement was found. Compile the SQL text. Also allocate
  ** a new SqlPreparedStmt structure.  */
  if( pPreStmt==0 ){
    int nByte;

    if( SQLITE_OK!=dbPrepare(pDb, zSql, &pStmt, pzOut) ){
      Tcl_SetObjResult(interp, dbTextToObj(sqlite3_errmsg(pDb->db)));
      return TCL_ERROR;
    }
    if( pStmt==0 ){
      if( SQLITE_OK!=sqlite3_errcode(pDb->db) ){
        /* A compile-time error in the statement. */
        Tcl_SetObjResult(interp, dbTextToObj(sqlite3_errmsg(pDb->db)));

    pPreStmt = (SqlPreparedStmt*)Tcl_Alloc(nByte);
    memset(pPreStmt, 0, nByte);

    pPreStmt->pStmt = pStmt;
    pPreStmt->nSql = (*pzOut - zSql);
    pPreStmt->zSql = sqlite3_sql(pStmt);
    pPreStmt->apParm = (Tcl_Obj **)&pPreStmt[1];
#ifdef SQLITE_TEST
    if( pPreStmt->zSql==0 ){
      char *zCopy = Tcl_Alloc(pPreStmt->nSql + 1);
      memcpy(zCopy, zSql, pPreStmt->nSql);
      zCopy[pPreStmt->nSql] = '\0';
      pPreStmt->zSql = zCopy;
    }
#endif
  }
  assert( pPreStmt );
  assert( strlen30(pPreStmt->zSql)==pPreStmt->nSql );
  assert( 0==memcmp(pPreStmt->zSql, zSql, pPreStmt->nSql) );

  /* Bind values to parameters that begin with $ or : */  
  for(i=1; i<=nVar; i++){

  }
  pPreStmt->nParm = iParm;
  *ppPreStmt = pPreStmt;

  return TCL_OK;
}


/*
** Release a statement reference obtained by calling dbPrepareAndBind().
** There should be exactly one call to this function for each call to
** dbPrepareAndBind().
**
** If the discard parameter is non-zero, then the statement is deleted
** immediately. Otherwise it is added to the LRU list and may be returned

  for(i=0; i<pPreStmt->nParm; i++){
    Tcl_DecrRefCount(pPreStmt->apParm[i]);
  }
  pPreStmt->nParm = 0;

  if( pDb->maxStmt<=0 || discard ){
    /* If the cache is turned off, deallocated the statement */

    dbFreeStmt(pPreStmt);
  }else{
    /* Add the prepared statement to the beginning of the cache list. */
    pPreStmt->pNext = pDb->stmtList;
    pPreStmt->pPrev = 0;
    if( pDb->stmtList ){
     pDb->stmtList->pPrev = pPreStmt;
    }
    pDb->stmtList = pPreStmt;
    if( pDb->stmtLast==0 ){
      assert( pDb->nStmt==0 );
      pDb->stmtLast = pPreStmt;
    }else{
      assert( pDb->nStmt>0 );
    }
    pDb->nStmt++;
   
    /* If we have too many statement in cache, remove the surplus from 
    ** the end of the cache list.  */
    while( pDb->nStmt>pDb->maxStmt ){
      SqlPreparedStmt *pLast = pDb->stmtLast;
      pDb->stmtLast = pLast->pPrev;

      pDb->stmtLast->pNext = 0;
      pDb->nStmt--;
      dbFreeStmt(pLast);
    }
  }
}

/*
** Structure used with dbEvalXXX() functions:
**

** A return value of TCL_OK means there is a row of data available. The
** data may be accessed using dbEvalRowInfo() and dbEvalColumnValue(). This
** is analogous to a return of SQLITE_ROW from sqlite3_step(). If TCL_BREAK
** is returned, then the SQL script has finished executing and there are
** no further rows available. This is similar to SQLITE_DONE.
*/
static int dbEvalStep(DbEvalContext *p){
  const char *zPrevSql = 0;       /* Previous value of p->zSql */

  while( p->zSql[0] || p->pPreStmt ){
    int rc;
    if( p->pPreStmt==0 ){
      zPrevSql = (p->zSql==zPrevSql ? 0 : p->zSql);
      rc = dbPrepareAndBind(p->pDb, p->zSql, &p->zSql, &p->pPreStmt);
      if( rc!=TCL_OK ) return rc;
    }else{
      int rcs;
      SqliteDb *pDb = p->pDb;
      SqlPreparedStmt *pPreStmt = p->pPreStmt;
      sqlite3_stmt *pStmt = pPreStmt->pStmt;

      pDb->nIndex = sqlite3_stmt_status(pStmt,SQLITE_STMTSTATUS_AUTOINDEX,1);
      dbReleaseColumnNames(p);
      p->pPreStmt = 0;

      if( rcs!=SQLITE_OK ){
        /* If a run-time error occurs, report the error and stop reading
        ** the SQL.  */

        dbReleaseStmt(pDb, pPreStmt, 1);
#if SQLITE_TEST
        if( p->pDb->bLegacyPrepare && rcs==SQLITE_SCHEMA && zPrevSql ){
          /* If the runtime error was an SQLITE_SCHEMA, and the database
          ** handle is configured to use the legacy sqlite3_prepare() 
          ** interface, retry prepare()/step() on the same SQL statement.
          ** This only happens once. If there is a second SQLITE_SCHEMA
          ** error, the error will be returned to the caller. */
          p->zSql = zPrevSql;
          continue;
        }
#endif
        Tcl_SetObjResult(pDb->interp, dbTextToObj(sqlite3_errmsg(pDb->db)));
        return TCL_ERROR;
      }else{
        dbReleaseStmt(pDb, pPreStmt, 0);
      }
    }
  }

      if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
      if( b ){
        flags |= SQLITE_OPEN_NOMUTEX;
        flags &= ~SQLITE_OPEN_FULLMUTEX;
      }else{
        flags &= ~SQLITE_OPEN_NOMUTEX;
      }
    }else if( strcmp(zArg, "-fullmutex")==0 ){
      int b;
      if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
      if( b ){
        flags |= SQLITE_OPEN_FULLMUTEX;
        flags &= ~SQLITE_OPEN_NOMUTEX;
      }else{
        flags &= ~SQLITE_OPEN_FULLMUTEX;

  if( !slave ){
    return TCL_ERROR;
  }

  init_all(slave);
  return TCL_OK;
}

/*
** Tclcmd: db_use_legacy_prepare DB BOOLEAN
**
**   The first argument to this command must be a database command created by
**   [sqlite3]. If the second argument is true, then the handle is configured
**   to use the sqlite3_prepare_v2() function to prepare statements. If it
**   is false, sqlite3_prepare().
*/
static int db_use_legacy_prepare_cmd(
  ClientData cd,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *CONST objv[]
){
  Tcl_CmdInfo cmdInfo;
  SqliteDb *pDb;
  int bPrepare;

  if( objc!=3 ){
    Tcl_WrongNumArgs(interp, 1, objv, "DB BOOLEAN");
    return TCL_ERROR;
  }

  if( !Tcl_GetCommandInfo(interp, Tcl_GetString(objv[1]), &cmdInfo) ){
    Tcl_AppendResult(interp, "no such db: ", Tcl_GetString(objv[1]), (char*)0);
    return TCL_ERROR;
  }
  pDb = (SqliteDb*)cmdInfo.objClientData;
  if( Tcl_GetBooleanFromObj(interp, objv[2], &bPrepare) ){
    return TCL_ERROR;
  }

  pDb->bLegacyPrepare = bPrepare;

  Tcl_ResetResult(interp);
  return TCL_OK;
}
#endif

/*
** Configure the interpreter passed as the first argument to have access
** to the commands and linked variables that make up:
**
**   * the [sqlite3] extension itself, 

    Sqlitetestfuzzer_Init(interp);
    Sqlitetestwholenumber_Init(interp);

#if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4)
    Sqlitetestfts3_Init(interp);
#endif

    Tcl_CreateObjCommand(
        interp, "load_testfixture_extensions", init_all_cmd, 0, 0
    );
    Tcl_CreateObjCommand(
        interp, "db_use_legacy_prepare", db_use_legacy_prepare_cmd, 0, 0
    );

#ifdef SQLITE_SSE
    Sqlitetestsse_Init(interp);
#endif
  }
#endif
}

run_test_suite journaltest 
run_test_suite inmemory_journal
run_test_suite pcache0 
run_test_suite pcache10 
run_test_suite pcache50 
run_test_suite pcache90 
run_test_suite pcache100
run_test_suite prepare

if {$::tcl_platform(platform)=="unix"} {
  ifcapable !default_autovacuum {
    run_test_suite autovacuum_crash
  }
}

  execsql {
    SELECT sum(a), c FROM abc GROUP BY c;
  }
} {8 {} 1 10}
do_test alter2-1.9 {
  # ALTER TABLE abc ADD COLUMN d;
  alter_table abc {CREATE TABLE abc(a, b, c, d);}
  if {[permutation] == "prepare"} { db cache flush }
  execsql { SELECT * FROM abc; }
  execsql {
    UPDATE abc SET d = 11 WHERE c IS NULL AND a<4;
    SELECT * FROM abc;
  }
} {1 2 10 {} 3 4 {} 11 5 6 {} {}}
do_test alter2-1.10 {

      sql1 { DROP INDEX IF EXISTS aux.i2 }
      sql2 { SELECT name FROM aux.sqlite_master WHERE type = 'index' }
    } {}
    do_test 3.$tn.2.2 {
      sql1 { DROP INDEX IF EXISTS i2 }
      sql2 { CREATE INDEX aux.i2 ON t2(x) }
      sql1 { DROP INDEX IF EXISTS i2 }
      sql2 { SELECT * FROM aux.sqlite_master WHERE type = 'index' }
    } {}

    # VIEW objects.
    #
    do_test 3.$tn.3.1 {
      sql1 { DROP VIEW IF EXISTS aux.v1 }
      sql2 { CREATE VIEW aux.v1 AS SELECT * FROM t2 }

  where6.test where7.test where8.test where9.test
  whereA.test whereB.test wherelimit.test
  select1.test select2.test select3.test select4.test select5.test
  select7.test select8.test selectA.test selectC.test
} -dbconfig {
  optimization_control $::dbhandle all 0
}

test_suite "prepare" -description {
  Run tests with the db connection using sqlite3_prepare() instead of _v2().
} -dbconfig {
  db_use_legacy_prepare $::dbhandle 1
  #$::dbhandle cache size 0
} -files [
  test_set $allquicktests -exclude *malloc* *ioerr* *fault*
]

# End of tests
#############################################################################

# run_tests NAME OPTIONS
#
# where available options are:  

# but the permanent index should still be accessible and should still
# be updated when its corresponding table changes.
#
do_test temptable-5.1 {
  execsql {
    CREATE TEMP TABLE mask(a,b,c)
  } db2
  if {[permutation]=="prepare"} { db2 cache flush }
  execsql {
    CREATE INDEX mask ON t2(x);
    SELECT * FROM t2;
  }
} {3 4}
#do_test temptable-5.2 {
#  catchsql {