}

/*
** Return the total number of segments in index structure pStruct.
*/
static int fts5StructureCountSegments(Fts5Structure *pStruct){
  int nSegment = 0;               /* Total number of segments */

  int iLvl;                       /* Used to iterate through levels */

  for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){
    nSegment += pStruct->aLevel[iLvl].nSeg;

  }

  return nSegment;
}

/*
** Serialize and store the "structure" record for index iIdx.
................................................................................
** checksum does not match. Return SQLITE_OK if all checks pass without
** error, or some other SQLite error code if another error (e.g. OOM)
** occurs.
*/
int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){
  Fts5Config *pConfig = p->pConfig;
  int iIdx;                       /* Used to iterate through indexes */
  int rc;                         /* Return code */
  u64 cksum2 = 0;                 /* Checksum based on contents of indexes */

  /* Check that the checksum of the index matches the argument checksum */
  for(iIdx=0; iIdx<=pConfig->nPrefix; iIdx++){
    Fts5MultiSegIter *pIter;
    Fts5Structure *pStruct = fts5StructureRead(p, iIdx);
    for(fts5MultiIterNew(p, pStruct, iIdx, 0, 0, 0, 0, -1, 0, &pIter);
................................................................................
        fflush(stdout);
#endif
      }
    }
    fts5MultiIterFree(p, pIter);
    fts5StructureRelease(pStruct);
  }
  rc = p->rc;
  if( rc==SQLITE_OK && cksum!=cksum2 ) rc = FTS5_CORRUPT;

  /* Check that the internal nodes of each segment match the leaves */
  for(iIdx=0; rc==SQLITE_OK && iIdx<=pConfig->nPrefix; iIdx++){
    Fts5Structure *pStruct = fts5StructureRead(p, iIdx);
    if( pStruct ){
      int iLvl, iSeg;
      for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){
        for(iSeg=0; iSeg<pStruct->aLevel[iLvl].nSeg; iSeg++){
          Fts5StructureSegment *pSeg = &pStruct->aLevel[iLvl].aSeg[iSeg];
          fts5IndexIntegrityCheckSegment(p, iIdx, pSeg);
        }
      }
    }
    fts5StructureRelease(pStruct);
    rc = p->rc;
  }

  return rc;
}


/*
** Indicate that all subsequent calls to sqlite3Fts5IndexWrite() pertain
** to the document with rowid iRowid.
*/

}

/*
** Return the total number of segments in index structure pStruct.
*/
static int fts5StructureCountSegments(Fts5Structure *pStruct){
  int nSegment = 0;               /* Total number of segments */
  if( pStruct ){
    int iLvl;                     /* Used to iterate through levels */

    for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){
      nSegment += pStruct->aLevel[iLvl].nSeg;
    }
  }

  return nSegment;
}

/*
** Serialize and store the "structure" record for index iIdx.
................................................................................
** checksum does not match. Return SQLITE_OK if all checks pass without
** error, or some other SQLite error code if another error (e.g. OOM)
** occurs.
*/
int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){
  Fts5Config *pConfig = p->pConfig;
  int iIdx;                       /* Used to iterate through indexes */

  u64 cksum2 = 0;                 /* Checksum based on contents of indexes */

  /* Check that the checksum of the index matches the argument checksum */
  for(iIdx=0; iIdx<=pConfig->nPrefix; iIdx++){
    Fts5MultiSegIter *pIter;
    Fts5Structure *pStruct = fts5StructureRead(p, iIdx);
    for(fts5MultiIterNew(p, pStruct, iIdx, 0, 0, 0, 0, -1, 0, &pIter);
................................................................................
        fflush(stdout);
#endif
      }
    }
    fts5MultiIterFree(p, pIter);
    fts5StructureRelease(pStruct);
  }

  if( p->rc==SQLITE_OK && cksum!=cksum2 ) p->rc = FTS5_CORRUPT;

  /* Check that the internal nodes of each segment match the leaves */
  for(iIdx=0; p->rc==SQLITE_OK && iIdx<=pConfig->nPrefix; iIdx++){
    Fts5Structure *pStruct = fts5StructureRead(p, iIdx);
    if( pStruct ){
      int iLvl, iSeg;
      for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){
        for(iSeg=0; iSeg<pStruct->aLevel[iLvl].nSeg; iSeg++){
          Fts5StructureSegment *pSeg = &pStruct->aLevel[iLvl].aSeg[iSeg];
          fts5IndexIntegrityCheckSegment(p, iIdx, pSeg);
        }
      }
    }
    fts5StructureRelease(pStruct);

  }

  return fts5IndexReturn(p);
}


/*
** Indicate that all subsequent calls to sqlite3Fts5IndexWrite() pertain
** to the document with rowid iRowid.
*/

      pConfig->zDb, pConfig->zName, zSuffix
  );
  if( zSql==0 ){
    rc = SQLITE_NOMEM;
  }else{
    sqlite3_stmt *pCnt = 0;
    rc = sqlite3_prepare_v2(pConfig->db, zSql, -1, &pCnt, 0);

    if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pCnt) ){
      *pnRow = sqlite3_column_int64(pCnt, 0);
    }
    rc = sqlite3_finalize(pCnt);

  }

  sqlite3_free(zSql);
  return rc;
}

/*
................................................................................
  Fts5Storage *p, 
  const char *z, 
  sqlite3_value *pVal
){
  sqlite3_stmt *pReplace = 0;
  int rc = fts5StorageGetStmt(p, FTS5_STMT_REPLACE_CONFIG, &pReplace, 0);
  if( rc==SQLITE_OK ){
    sqlite3_bind_text(pReplace, 1, z, -1, SQLITE_TRANSIENT);
    sqlite3_bind_value(pReplace, 2, pVal);
    sqlite3_step(pReplace);
    rc = sqlite3_reset(pReplace);
  }
  if( rc==SQLITE_OK ){
    int iNew = p->pConfig->iCookie + 1;
    rc = sqlite3Fts5IndexSetCookie(p->pIndex, iNew);

      pConfig->zDb, pConfig->zName, zSuffix
  );
  if( zSql==0 ){
    rc = SQLITE_NOMEM;
  }else{
    sqlite3_stmt *pCnt = 0;
    rc = sqlite3_prepare_v2(pConfig->db, zSql, -1, &pCnt, 0);
    if( rc==SQLITE_OK ){
      if( SQLITE_ROW==sqlite3_step(pCnt) ){
        *pnRow = sqlite3_column_int64(pCnt, 0);
      }
      rc = sqlite3_finalize(pCnt);
    }
  }

  sqlite3_free(zSql);
  return rc;
}

/*
................................................................................
  Fts5Storage *p, 
  const char *z, 
  sqlite3_value *pVal
){
  sqlite3_stmt *pReplace = 0;
  int rc = fts5StorageGetStmt(p, FTS5_STMT_REPLACE_CONFIG, &pReplace, 0);
  if( rc==SQLITE_OK ){
    sqlite3_bind_text(pReplace, 1, z, -1, SQLITE_STATIC);
    sqlite3_bind_value(pReplace, 2, pVal);
    sqlite3_step(pReplace);
    rc = sqlite3_reset(pReplace);
  }
  if( rc==SQLITE_OK ){
    int iNew = p->pConfig->iCookie + 1;
    rc = sqlite3Fts5IndexSetCookie(p->pIndex, iNew);

      RELEASE aaa;
    }
    incr nRow
  }
  set nRow
} {200}











finish_test

      RELEASE aaa;
    }
    incr nRow
  }
  set nRow
} {200}

do_execsql_test 15.0 {
  INSERT INTO t1(t1) VALUES('integrity-check');
}
do_execsql_test 15.1 {
  UPDATE t1_content SET c1 = 'xyz xyz xyz xyz xyz abc' WHERE rowid = 1;
}
do_catchsql_test 15.2 {
  INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {database disk image is malformed}}

finish_test

#-------------------------------------------------------------------------
# This file contains tests for very large doclists.
#

do_test 1.0 {
  execsql { CREATE VIRTUAL TABLE t1 USING fts5(a) }
  execsql { INSERT INTO t1(t1, rank) VALUES('pgsz', 128) }


  for {set i 1} {$i <= 10000} {incr i} {
    set v {x x x x x x x x x x x x x x x x x x x x}
    if {($i % 2139)==0} {lset v 3 Y ; lappend Y $i}
    if {($i % 1577)==0} {lset v 5 W ; lappend W $i}
    execsql { INSERT INTO t1 VALUES($v) }
  }


} {}

do_execsql_test 1.1 {
  SELECT rowid FROM t1 WHERE t1 MATCH 'x AND w'
} [lsort -integer -decr $W]





do_execsql_test 1.2 {
  SELECT rowid FROM t1 WHERE t1 MATCH 'y AND x'
} [lsort -integer -decr $Y]

do_execsql_test 1.3 {
  INSERT INTO t1(t1) VALUES('integrity-check');
}

#-------------------------------------------------------------------------
# This file contains tests for very large doclists.
#

do_test 1.0 {
  execsql { CREATE VIRTUAL TABLE t1 USING fts5(a) }
  execsql { INSERT INTO t1(t1, rank) VALUES('pgsz', 128) }
  set v {w w w w w w w w w w w w w w w w w w w w}
  execsql { INSERT INTO t1(rowid, a) VALUES(0, $v) }
  for {set i 1} {$i <= 10000} {incr i} {
    set v {x x x x x x x x x x x x x x x x x x x x}
    if {($i % 2139)==0} {lset v 3 Y ; lappend Y $i}
    if {($i % 1577)==0} {lset v 5 W ; lappend W $i}
    execsql { INSERT INTO t1 VALUES($v) }
  }
  set v {w w w w w w w w w w w w w w w w w w w w}
  execsql { INSERT INTO t1 VALUES($v) }
} {}

do_execsql_test 1.1.1 {
  SELECT rowid FROM t1 WHERE t1 MATCH 'x AND w'
} [lsort -integer -decr $W]

do_execsql_test 1.1.2 {
  SELECT rowid FROM t1 WHERE t1 MATCH 'x* AND w*'
} [lsort -integer -decr $W]

do_execsql_test 1.2 {
  SELECT rowid FROM t1 WHERE t1 MATCH 'y AND x'
} [lsort -integer -decr $Y]

do_execsql_test 1.3 {
  INSERT INTO t1(t1) VALUES('integrity-check');
}

#   1: CREATE VIRTUAL TABLE
#   2: INSERT statement
#   3: DELETE statement
#   4: MATCH expressions
#
#

if 0 {

faultsim_save_and_close
do_faultsim_test 1 -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { CREATE VIRTUAL TABLE t1 USING fts5(a, b, prefix='1, 2, 3') }
} -test {
................................................................................
    execsql { SELECT rowid FROM t2 WHERE t2 MATCH '$expr' }
  " -test "
    faultsim_test_result {[list 0 $res]}
  "
}


}

#-------------------------------------------------------------------------
# The following tests use a larger database populated with random data.
#
# The database page size is set to 512 bytes and the FTS5 page size left
# at the default 1000 bytes. This means that reading a node may require
# pulling an overflow page from disk, which is an extra opportunity for
# an error to occur.
................................................................................
      SELECT max(rowid) FROM x1_data 
    )
  }
} -test {
  faultsim_test_result [list 0 1]
}

finish_test

#-------------------------------------------------------------------------
#
reset_db
do_execsql_test 6.0 {
  CREATE VIRTUAL TABLE x1 USING fts5(x);
  INSERT INTO x1(x1, rank) VALUES('automerge', 0);
................................................................................
} -test {
  faultsim_test_result [list 0 {}]
  if {$testrc==0} {
    set nCnt [db one {SELECT count(*) FROM x1_data}]
    if {$nCnt!=3} { error "expected 3 entries but there are $nCnt" }
  }
}


























#-------------------------------------------------------------------------
do_faultsim_test 7.0 -faults oom* -prep {
  catch { db close }
} -body {
  sqlite3 db test.db
} -test {
  faultsim_test_result [list 0 {}] [list 1 {}]
}


finish_test

#   1: CREATE VIRTUAL TABLE
#   2: INSERT statement
#   3: DELETE statement
#   4: MATCH expressions
#
#

if 1 {

faultsim_save_and_close
do_faultsim_test 1 -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { CREATE VIRTUAL TABLE t1 USING fts5(a, b, prefix='1, 2, 3') }
} -test {
................................................................................
    execsql { SELECT rowid FROM t2 WHERE t2 MATCH '$expr' }
  " -test "
    faultsim_test_result {[list 0 $res]}
  "
}




#-------------------------------------------------------------------------
# The following tests use a larger database populated with random data.
#
# The database page size is set to 512 bytes and the FTS5 page size left
# at the default 1000 bytes. This means that reading a node may require
# pulling an overflow page from disk, which is an extra opportunity for
# an error to occur.
................................................................................
      SELECT max(rowid) FROM x1_data 
    )
  }
} -test {
  faultsim_test_result [list 0 1]
}

}

#-------------------------------------------------------------------------
#
reset_db
do_execsql_test 6.0 {
  CREATE VIRTUAL TABLE x1 USING fts5(x);
  INSERT INTO x1(x1, rank) VALUES('automerge', 0);
................................................................................
} -test {
  faultsim_test_result [list 0 {}]
  if {$testrc==0} {
    set nCnt [db one {SELECT count(*) FROM x1_data}]
    if {$nCnt!=3} { error "expected 3 entries but there are $nCnt" }
  }
}

do_faultsim_test 6.2 -faults oom* -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { INSERT INTO x1(x1, rank) VALUES('pgsz', 32) }
} -test {
  faultsim_test_result [list 0 {}]
}

do_faultsim_test 6.3 -faults oom-* -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { INSERT INTO x1(x1) VALUES('integrity-check') }
} -test {
  faultsim_test_result [list 0 {}]
}

do_faultsim_test 6.4 -faults oom-* -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { INSERT INTO x1(x1) VALUES('optimize') }
} -test {
  faultsim_test_result [list 0 {}]
}


#-------------------------------------------------------------------------
do_faultsim_test 7.0 -faults oom* -prep {
  catch { db close }
} -body {
  sqlite3 db test.db
} -test {
  faultsim_test_result [list 0 {}] [list 1 {}]
}


finish_test

  } [expr $tn+1]
}

set res [db one {SELECT count(*) FROM x3_data}]
do_execsql_test 4.2 {
  SELECT count(fts5_decode(rowid, block)) FROM x3_data;
} $res





























finish_test

  } [expr $tn+1]
}

set res [db one {SELECT count(*) FROM x3_data}]
do_execsql_test 4.2 {
  SELECT count(fts5_decode(rowid, block)) FROM x3_data;
} $res

#-------------------------------------------------------------------------
# Position lists with large values.
#
set strlist [list \
  "[string repeat {w } 400]a"  \
  "[string repeat {x } 400]a"  \
  "[string repeat {y } 400]a"  \
  "[string repeat {z } 400]a"  \
]
do_test 5.0 {
  execsql {
    BEGIN;
    CREATE VIRTUAL TABLE x4 USING fts5(a);
    INSERT INTO x4(x4, rank) VALUES('pgsz', 32);
  }
  foreach str $strlist { execsql { INSERT INTO x4 VALUES($str) } }
  execsql COMMIT
} {}

do_execsql_test 5.1 {
  SELECT rowid FROM x4 WHERE x4 MATCH 'a'
} {4 3 2 1}

set res [db one {SELECT count(*) FROM x4_data}]
do_execsql_test 5.2 {
  SELECT count(fts5_decode(rowid, block)) FROM x4_data;
} $res

finish_test