#
# nmake Makefile for SQLite
#




# The toplevel directory of the source tree.  This is the directory
# that contains this "Makefile.msc".
#
TOP = .

# Set this non-0 to create and use the SQLite amalgamation file.
#
!IFNDEF USE_AMALGAMATION
USE_AMALGAMATION = 1
!ENDIF








# Set this non-0 to split the SQLite amalgamation file into chunks to
# be used for debugging with Visual Studio.
#
!IFNDEF SPLIT_AMALGAMATION
SPLIT_AMALGAMATION = 0
!ENDIF
................................................................................
# Enable use of available compiler optimizations?  Normally, this should be
# non-zero.  Setting this to zero, thus disabling all compiler optimizations,
# can be useful for testing.
#
!IFNDEF OPTIMIZATIONS
OPTIMIZATIONS = 2
!ENDIF




















# Check for the predefined command macro CC.  This should point to the compiler
# binary for the target platform.  If it is not defined, simply define it to
# the legacy default value 'cl.exe'.
#
!IFNDEF CC
CC = cl.exe
................................................................................
# Check for the predefined command macro RC.  This should point to the resource
# compiler binary for the target platform.  If it is not defined, simply define
# it to the legacy default value 'rc.exe'.
#
!IFNDEF RC
RC = rc.exe
!ENDIF










# Check for the command macro NCC.  This should point to the compiler binary
# for the platform the compilation process is taking place on.  If it is not
# defined, simply define it to have the same value as the CC macro.  When
# cross-compiling, it is suggested that this macro be modified via the command
# line (since nmake itself does not provide a built-in method to guess it).
# For example, to use the x86 compiler when cross-compiling for x64, a command
................................................................................
!ELSEIF $(XCOMPILE)!=0
NCC = "$(VCINSTALLDIR)\bin\$(CC)"
NCC = $(NCC:\\=\)
!ELSE
NCC = $(CC)
!ENDIF

# Check for the MSVC runtime library path macro.  Othertise, this
# value will default to the 'lib' directory underneath the MSVC
# installation directory.
#
!IFNDEF NCRTLIBPATH
NCRTLIBPATH = $(VCINSTALLDIR)\lib
!ENDIF

NCRTLIBPATH = $(NCRTLIBPATH:\\=\)
................................................................................
!ENDIF

!IF $(DEBUG)>4
TCC = $(TCC) -DSQLITE_ENABLE_IOTRACE
RCC = $(RCC) -DSQLITE_ENABLE_IOTRACE
!ENDIF

#
# Prevent warnings about "insecure" MSVC runtime library functions
# being used.
#
TCC = $(TCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS
BCC = $(BCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS
RCC = $(RCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS

#
# Prevent warnings about "deprecated" POSIX functions being used.
#
TCC = $(TCC) -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS
BCC = $(BCC) -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS
RCC = $(RCC) -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS

#
# Use the SQLite debugging heap subsystem?
#
!IF $(MEMDEBUG)!=0
TCC = $(TCC) -DSQLITE_MEMDEBUG=1
RCC = $(RCC) -DSQLITE_MEMDEBUG=1

#
# Use native Win32 heap subsystem instead of malloc/free?
#
!ELSEIF $(WIN32HEAP)!=0
TCC = $(TCC) -DSQLITE_WIN32_MALLOC=1
RCC = $(RCC) -DSQLITE_WIN32_MALLOC=1

#
# Validate the heap on every call into the native Win32 heap subsystem?
#
!IF $(DEBUG)>2
TCC = $(TCC) -DSQLITE_WIN32_MALLOC_VALIDATE=1
RCC = $(RCC) -DSQLITE_WIN32_MALLOC_VALIDATE=1
!ENDIF
!ENDIF
................................................................................
RCC = $(RCC) -DSQLITE_TEMP_STORE=1

# Enable/disable loadable extensions, and other optional features
# based on configuration. (-DSQLITE_OMIT*, -DSQLITE_ENABLE*).
# The same set of OMIT and ENABLE flags should be passed to the
# LEMON parser generator and the mkkeywordhash tool as well.

# BEGIN standard options
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_FTS3=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_RTREE=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_COLUMN_METADATA=1
# END standard options

# BEGIN required Windows option
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_MAX_TRIGGER_DEPTH=100
# END required Windows option

TCC = $(TCC) $(OPT_FEATURE_FLAGS)
RCC = $(RCC) $(OPT_FEATURE_FLAGS)

# Add in any optional parameters specified on the make commane line
# ie.  make "OPTS=-DSQLITE_ENABLE_FOO=1 -DSQLITE_OMIT_FOO=1".
TCC = $(TCC) $(OPTS)
RCC = $(RCC) $(OPTS)

# If compiling for debugging, add some defines.

!IF $(DEBUG)>0
TCC = $(TCC) -D_DEBUG
BCC = $(BCC) -D_DEBUG
RCC = $(RCC) -D_DEBUG
!ENDIF

# If optimizations are enabled or disabled (either implicitly or
# explicitly), add the necessary flags.

!IF $(DEBUG)>0 || $(OPTIMIZATIONS)==0
TCC = $(TCC) -Od
BCC = $(BCC) -Od
!ELSEIF $(OPTIMIZATIONS)>=3
TCC = $(TCC) -Ox
BCC = $(BCC) -Ox
!ELSEIF $(OPTIMIZATIONS)==2
................................................................................
BCC = $(BCC) -O2
!ELSEIF $(OPTIMIZATIONS)==1
TCC = $(TCC) -O1
BCC = $(BCC) -O1
!ENDIF

# If symbols are enabled (or compiling for debugging), enable PDBs.

!IF $(DEBUG)>0 || $(SYMBOLS)!=0
TCC = $(TCC) -Zi
BCC = $(BCC) -Zi
!ENDIF

# If ICU support is enabled, add the compiler options for it.

!IF $(USE_ICU)!=0
TCC = $(TCC) -DSQLITE_ENABLE_ICU=1
RCC = $(RCC) -DSQLITE_ENABLE_ICU=1
TCC = $(TCC) -I$(TOP)\ext\icu
RCC = $(RCC) -I$(TOP)\ext\icu
TCC = $(TCC) -I$(ICUINCDIR)
RCC = $(RCC) -I$(ICUINCDIR)
!ENDIF

# Command line prefixes for compiling code, compiling resources,
# linking, etc.

LTCOMPILE = $(TCC) -Fo$@
LTRCOMPILE = $(RCC) -r
LTLIB = lib.exe
LTLINK = $(TCC) -Fe$@

# If a platform was set, force the linker to target that.
# Note that the vcvars*.bat family of batch files typically
................................................................................
# only in the context of an application container.
#
!IF $(FOR_WINRT)!=0
LTLINKOPTS = $(LTLINKOPTS) /APPCONTAINER
!IF "$(VISUALSTUDIOVERSION)"=="12.0"
!IFNDEF STORELIBPATH
!IF "$(PLATFORM)"=="x86"
STORELIBPATH = $(NCRTLIBPATH)\store
!ELSEIF "$(PLATFORM)"=="x64"
STORELIBPATH = $(NCRTLIBPATH)\store\amd64
!ELSEIF "$(PLATFORM)"=="ARM"
STORELIBPATH = $(NCRTLIBPATH)\store\arm
!ELSE
STORELIBPATH = $(NCRTLIBPATH)\store
!ENDIF
!ENDIF
STORELIBPATH = $(STORELIBPATH:\\=\)
LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(STORELIBPATH)"
!ENDIF
!ENDIF




























# If either debugging or symbols are enabled, enable PDBs.

!IF $(DEBUG)>0 || $(SYMBOLS)!=0
LDFLAGS = /DEBUG
!ENDIF

# Start with the Tcl related linker options.

!IF $(NO_TCL)==0
LTLIBPATHS = /LIBPATH:$(TCLLIBDIR)
LTLIBS = $(LIBTCL)
!ENDIF

# If ICU support is enabled, add the linker options for it.

!IF $(USE_ICU)!=0
LTLIBPATHS = $(LTLIBPATHS) /LIBPATH:$(ICULIBDIR)
LTLIBS = $(LTLIBS) $(LIBICU)
!ENDIF

# nawk compatible awk.

!IFNDEF NAWK
NAWK = gawk.exe
!ENDIF

# You should not have to change anything below this line
###############################################################################

................................................................................
# Rules to build parse.c and parse.h - the outputs of lemon.
#
parse.h:	parse.c

parse.c:	$(TOP)\src\parse.y lemon.exe $(TOP)\addopcodes.awk
	del /Q parse.y parse.h parse.h.temp
	copy $(TOP)\src\parse.y .
	.\lemon.exe $(OPT_FEATURE_FLAGS) $(OPTS) parse.y
	move parse.h parse.h.temp
	$(NAWK) -f $(TOP)\addopcodes.awk parse.h.temp > parse.h

sqlite3.h:	$(TOP)\src\sqlite.h.in $(TOP)\manifest.uuid $(TOP)\VERSION
	$(TCLSH_CMD) $(TOP)\tool\mksqlite3h.tcl $(TOP:\=/) > sqlite3.h

mkkeywordhash.exe:	$(TOP)\tool\mkkeywordhash.c
	$(BCC) -Fe$@ $(OPT_FEATURE_FLAGS) $(OPTS) $(TOP)\tool\mkkeywordhash.c /link $(NLTLINKOPTS) $(NLTLIBPATHS)

keywordhash.h:	$(TOP)\tool\mkkeywordhash.c mkkeywordhash.exe
	.\mkkeywordhash.exe > keywordhash.h



# Rules to build the extension objects.

#
# nmake Makefile for SQLite
#
###############################################################################
############################## START OF OPTIONS ###############################
###############################################################################

# The toplevel directory of the source tree.  This is the directory
# that contains this "Makefile.msc".
#
TOP = .

# Set this non-0 to create and use the SQLite amalgamation file.
#
!IFNDEF USE_AMALGAMATION
USE_AMALGAMATION = 1
!ENDIF

# Set this non-0 to use the library paths and other options necessary for
# Windows Phone 8.1.
#
!IFNDEF USE_WP81_OPTS
USE_WP81_OPTS = 0
!ENDIF

# Set this non-0 to split the SQLite amalgamation file into chunks to
# be used for debugging with Visual Studio.
#
!IFNDEF SPLIT_AMALGAMATION
SPLIT_AMALGAMATION = 0
!ENDIF
................................................................................
# Enable use of available compiler optimizations?  Normally, this should be
# non-zero.  Setting this to zero, thus disabling all compiler optimizations,
# can be useful for testing.
#
!IFNDEF OPTIMIZATIONS
OPTIMIZATIONS = 2
!ENDIF

# These are the "standard" SQLite compilation options used when compiling for
# the Windows platform.
#
!IFNDEF OPT_FEATURE_FLAGS
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_FTS3=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_RTREE=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_COLUMN_METADATA=1
!ENDIF

###############################################################################
############################### END OF OPTIONS ################################
###############################################################################

# This assumes that MSVC is always installed in 32-bit Program Files directory
# and sets the variable for use in locating other 32-bit installs accordingly.
#
PROGRAMFILES_X86 = $(VCINSTALLDIR)\..\..
PROGRAMFILES_X86 = $(PROGRAMFILES_X86:\\=\)

# Check for the predefined command macro CC.  This should point to the compiler
# binary for the target platform.  If it is not defined, simply define it to
# the legacy default value 'cl.exe'.
#
!IFNDEF CC
CC = cl.exe
................................................................................
# Check for the predefined command macro RC.  This should point to the resource
# compiler binary for the target platform.  If it is not defined, simply define
# it to the legacy default value 'rc.exe'.
#
!IFNDEF RC
RC = rc.exe
!ENDIF

# Check for the MSVC runtime library path macro.  Othertise, this value will
# default to the 'lib' directory underneath the MSVC installation directory.
#
!IFNDEF CRTLIBPATH
CRTLIBPATH = $(VCINSTALLDIR)\lib
!ENDIF

CRTLIBPATH = $(CRTLIBPATH:\\=\)

# Check for the command macro NCC.  This should point to the compiler binary
# for the platform the compilation process is taking place on.  If it is not
# defined, simply define it to have the same value as the CC macro.  When
# cross-compiling, it is suggested that this macro be modified via the command
# line (since nmake itself does not provide a built-in method to guess it).
# For example, to use the x86 compiler when cross-compiling for x64, a command
................................................................................
!ELSEIF $(XCOMPILE)!=0
NCC = "$(VCINSTALLDIR)\bin\$(CC)"
NCC = $(NCC:\\=\)
!ELSE
NCC = $(CC)
!ENDIF

# Check for the MSVC native runtime library path macro.  Othertise,
# this value will default to the 'lib' directory underneath the MSVC
# installation directory.
#
!IFNDEF NCRTLIBPATH
NCRTLIBPATH = $(VCINSTALLDIR)\lib
!ENDIF

NCRTLIBPATH = $(NCRTLIBPATH:\\=\)
................................................................................
!ENDIF

!IF $(DEBUG)>4
TCC = $(TCC) -DSQLITE_ENABLE_IOTRACE
RCC = $(RCC) -DSQLITE_ENABLE_IOTRACE
!ENDIF


# Prevent warnings about "insecure" MSVC runtime library functions
# being used.
#
TCC = $(TCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS
BCC = $(BCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS
RCC = $(RCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS


# Prevent warnings about "deprecated" POSIX functions being used.
#
TCC = $(TCC) -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS
BCC = $(BCC) -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS
RCC = $(RCC) -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS


# Use the SQLite debugging heap subsystem?
#
!IF $(MEMDEBUG)!=0
TCC = $(TCC) -DSQLITE_MEMDEBUG=1
RCC = $(RCC) -DSQLITE_MEMDEBUG=1


# Use native Win32 heap subsystem instead of malloc/free?
#
!ELSEIF $(WIN32HEAP)!=0
TCC = $(TCC) -DSQLITE_WIN32_MALLOC=1
RCC = $(RCC) -DSQLITE_WIN32_MALLOC=1


# Validate the heap on every call into the native Win32 heap subsystem?
#
!IF $(DEBUG)>2
TCC = $(TCC) -DSQLITE_WIN32_MALLOC_VALIDATE=1
RCC = $(RCC) -DSQLITE_WIN32_MALLOC_VALIDATE=1
!ENDIF
!ENDIF
................................................................................
RCC = $(RCC) -DSQLITE_TEMP_STORE=1

# Enable/disable loadable extensions, and other optional features
# based on configuration. (-DSQLITE_OMIT*, -DSQLITE_ENABLE*).
# The same set of OMIT and ENABLE flags should be passed to the
# LEMON parser generator and the mkkeywordhash tool as well.

# These are the required SQLite compilation options used when compiling for
# the Windows platform.
#
REQ_FEATURE_FLAGS = $(REQ_FEATURE_FLAGS) -DSQLITE_MAX_TRIGGER_DEPTH=100

# Add the required and optional SQLite compilation options into the command
# lines used to invoke the MSVC code and resource compilers.
#
TCC = $(TCC) $(REQ_FEATURE_FLAGS) $(OPT_FEATURE_FLAGS)
RCC = $(RCC) $(REQ_FEATURE_FLAGS) $(OPT_FEATURE_FLAGS)

# Add in any optional parameters specified on the commane line, e.g.
# nmake /f Makefile.msc all "OPTS=-DSQLITE_ENABLE_FOO=1 -DSQLITE_OMIT_FOO=1"
#

TCC = $(TCC) $(OPTS)
RCC = $(RCC) $(OPTS)

# If compiling for debugging, add some defines.
#
!IF $(DEBUG)>0
TCC = $(TCC) -D_DEBUG
BCC = $(BCC) -D_DEBUG
RCC = $(RCC) -D_DEBUG
!ENDIF

# If optimizations are enabled or disabled (either implicitly or
# explicitly), add the necessary flags.
#
!IF $(DEBUG)>0 || $(OPTIMIZATIONS)==0
TCC = $(TCC) -Od
BCC = $(BCC) -Od
!ELSEIF $(OPTIMIZATIONS)>=3
TCC = $(TCC) -Ox
BCC = $(BCC) -Ox
!ELSEIF $(OPTIMIZATIONS)==2
................................................................................
BCC = $(BCC) -O2
!ELSEIF $(OPTIMIZATIONS)==1
TCC = $(TCC) -O1
BCC = $(BCC) -O1
!ENDIF

# If symbols are enabled (or compiling for debugging), enable PDBs.
#
!IF $(DEBUG)>0 || $(SYMBOLS)!=0
TCC = $(TCC) -Zi
BCC = $(BCC) -Zi
!ENDIF

# If ICU support is enabled, add the compiler options for it.
#
!IF $(USE_ICU)!=0
TCC = $(TCC) -DSQLITE_ENABLE_ICU=1
RCC = $(RCC) -DSQLITE_ENABLE_ICU=1
TCC = $(TCC) -I$(TOP)\ext\icu
RCC = $(RCC) -I$(TOP)\ext\icu
TCC = $(TCC) -I$(ICUINCDIR)
RCC = $(RCC) -I$(ICUINCDIR)
!ENDIF

# Command line prefixes for compiling code, compiling resources,
# linking, etc.
#
LTCOMPILE = $(TCC) -Fo$@
LTRCOMPILE = $(RCC) -r
LTLIB = lib.exe
LTLINK = $(TCC) -Fe$@

# If a platform was set, force the linker to target that.
# Note that the vcvars*.bat family of batch files typically
................................................................................
# only in the context of an application container.
#
!IF $(FOR_WINRT)!=0
LTLINKOPTS = $(LTLINKOPTS) /APPCONTAINER
!IF "$(VISUALSTUDIOVERSION)"=="12.0"
!IFNDEF STORELIBPATH
!IF "$(PLATFORM)"=="x86"
STORELIBPATH = $(CRTLIBPATH)\store
!ELSEIF "$(PLATFORM)"=="x64"
STORELIBPATH = $(CRTLIBPATH)\store\amd64
!ELSEIF "$(PLATFORM)"=="ARM"
STORELIBPATH = $(CRTLIBPATH)\store\arm
!ELSE
STORELIBPATH = $(CRTLIBPATH)\store
!ENDIF
!ENDIF
STORELIBPATH = $(STORELIBPATH:\\=\)
LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(STORELIBPATH)"
!ENDIF
!ENDIF

# When compiling for Windows Phone 8.1, an extra library path is
# required.
#
!IF $(USE_WP81_OPTS)!=0
!IFNDEF WP81LIBPATH
!IF "$(PLATFORM)"=="x86"
WP81LIBPATH = $(PROGRAMFILES_X86)\Windows Phone Kits\8.1\lib\x86
!ELSEIF "$(PLATFORM)"=="ARM"
WP81LIBPATH = $(PROGRAMFILES_X86)\Windows Phone Kits\8.1\lib\ARM
!ELSE
WP81LIBPATH = $(PROGRAMFILES_X86)\Windows Phone Kits\8.1\lib\x86
!ENDIF
!ENDIF
!ENDIF

# When compiling for Windows Phone 8.1, some extra linker options
# are also required.
#
!IF $(USE_WP81_OPTS)!=0
!IFDEF WP81LIBPATH
LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(WP81LIBPATH)"
!ENDIF
LTLINKOPTS = $(LTLINKOPTS) /DYNAMICBASE
LTLINKOPTS = $(LTLINKOPTS) WindowsPhoneCore.lib RuntimeObject.lib PhoneAppModelHost.lib
LTLINKOPTS = $(LTLINKOPTS) /NODEFAULTLIB:kernel32.lib /NODEFAULTLIB:ole32.lib
!ENDIF

# If either debugging or symbols are enabled, enable PDBs.
#
!IF $(DEBUG)>0 || $(SYMBOLS)!=0
LDFLAGS = /DEBUG
!ENDIF

# Start with the Tcl related linker options.
#
!IF $(NO_TCL)==0
LTLIBPATHS = /LIBPATH:$(TCLLIBDIR)
LTLIBS = $(LIBTCL)
!ENDIF

# If ICU support is enabled, add the linker options for it.
#
!IF $(USE_ICU)!=0
LTLIBPATHS = $(LTLIBPATHS) /LIBPATH:$(ICULIBDIR)
LTLIBS = $(LTLIBS) $(LIBICU)
!ENDIF

# nawk compatible awk.
#
!IFNDEF NAWK
NAWK = gawk.exe
!ENDIF

# You should not have to change anything below this line
###############################################################################

................................................................................
# Rules to build parse.c and parse.h - the outputs of lemon.
#
parse.h:	parse.c

parse.c:	$(TOP)\src\parse.y lemon.exe $(TOP)\addopcodes.awk
	del /Q parse.y parse.h parse.h.temp
	copy $(TOP)\src\parse.y .
	.\lemon.exe $(REQ_FEATURE_FLAGS) $(OPT_FEATURE_FLAGS) $(OPTS) parse.y
	move parse.h parse.h.temp
	$(NAWK) -f $(TOP)\addopcodes.awk parse.h.temp > parse.h

sqlite3.h:	$(TOP)\src\sqlite.h.in $(TOP)\manifest.uuid $(TOP)\VERSION
	$(TCLSH_CMD) $(TOP)\tool\mksqlite3h.tcl $(TOP:\=/) > sqlite3.h

mkkeywordhash.exe:	$(TOP)\tool\mkkeywordhash.c
	$(BCC) -Fe$@ $(REQ_FEATURE_FLAGS) $(OPT_FEATURE_FLAGS) $(OPTS) $(TOP)\tool\mkkeywordhash.c /link $(NLTLINKOPTS) $(NLTLIBPATHS)

keywordhash.h:	$(TOP)\tool\mkkeywordhash.c mkkeywordhash.exe
	.\mkkeywordhash.exe > keywordhash.h



# Rules to build the extension objects.

  p->azColumn = (char **)&p[1];
  p->pTokenizer = pTokenizer;
  p->nMaxPendingData = FTS3_MAX_PENDING_DATA;
  p->bHasDocsize = (isFts4 && bNoDocsize==0);
  p->bHasStat = isFts4;
  p->bFts4 = isFts4;
  p->bDescIdx = bDescIdx;
  p->bAutoincrmerge = 0xff;   /* 0xff means setting unknown */
  p->zContentTbl = zContent;
  p->zLanguageid = zLanguageid;
  zContent = 0;
  zLanguageid = 0;
  TESTONLY( p->inTransaction = -1 );
  TESTONLY( p->mxSavepoint = -1 );

................................................................................
  ** segments.
  */
  const u32 nMinMerge = 64;       /* Minimum amount of incr-merge work to do */

  Fts3Table *p = (Fts3Table*)pVtab;
  int rc = sqlite3Fts3PendingTermsFlush(p);


  if( rc==SQLITE_OK && p->bAutoincrmerge==1 && p->nLeafAdd>(nMinMerge/16) ){


    int mxLevel = 0;              /* Maximum relative level value in db */
    int A;                        /* Incr-merge parameter A */

    rc = sqlite3Fts3MaxLevel(p, &mxLevel);
    assert( rc==SQLITE_OK || mxLevel==0 );
    A = p->nLeafAdd * mxLevel;
    A += (A/2);
    if( A>(int)nMinMerge ) rc = sqlite3Fts3Incrmerge(p, A, 8);
  }
  sqlite3Fts3SegmentsClose(p);
  return rc;
}

/*
** If it is currently unknown whether or not the FTS table has an %_stat

  p->azColumn = (char **)&p[1];
  p->pTokenizer = pTokenizer;
  p->nMaxPendingData = FTS3_MAX_PENDING_DATA;
  p->bHasDocsize = (isFts4 && bNoDocsize==0);
  p->bHasStat = isFts4;
  p->bFts4 = isFts4;
  p->bDescIdx = bDescIdx;
  p->nAutoincrmerge = 0xff;   /* 0xff means setting unknown */
  p->zContentTbl = zContent;
  p->zLanguageid = zLanguageid;
  zContent = 0;
  zLanguageid = 0;
  TESTONLY( p->inTransaction = -1 );
  TESTONLY( p->mxSavepoint = -1 );

................................................................................
  ** segments.
  */
  const u32 nMinMerge = 64;       /* Minimum amount of incr-merge work to do */

  Fts3Table *p = (Fts3Table*)pVtab;
  int rc = sqlite3Fts3PendingTermsFlush(p);

  if( rc==SQLITE_OK 
   && p->nLeafAdd>(nMinMerge/16) 
   && p->nAutoincrmerge && p->nAutoincrmerge!=0xff
  ){
    int mxLevel = 0;              /* Maximum relative level value in db */
    int A;                        /* Incr-merge parameter A */

    rc = sqlite3Fts3MaxLevel(p, &mxLevel);
    assert( rc==SQLITE_OK || mxLevel==0 );
    A = p->nLeafAdd * mxLevel;
    A += (A/2);
    if( A>(int)nMinMerge ) rc = sqlite3Fts3Incrmerge(p, A, p->nAutoincrmerge);
  }
  sqlite3Fts3SegmentsClose(p);
  return rc;
}

/*
** If it is currently unknown whether or not the FTS table has an %_stat

  const char *zName;              /* virtual table name */
  int nColumn;                    /* number of named columns in virtual table */
  char **azColumn;                /* column names.  malloced */
  u8 *abNotindexed;               /* True for 'notindexed' columns */
  sqlite3_tokenizer *pTokenizer;  /* tokenizer for inserts and queries */
  char *zContentTbl;              /* content=xxx option, or NULL */
  char *zLanguageid;              /* languageid=xxx option, or NULL */
  u8 bAutoincrmerge;              /* True if automerge=1 */
  u32 nLeafAdd;                   /* Number of leaf blocks added this trans */

  /* Precompiled statements used by the implementation. Each of these 
  ** statements is run and reset within a single virtual table API call. 
  */
  sqlite3_stmt *aStmt[37];

  char *zReadExprlist;
  char *zWriteExprlist;

  int nNodeSize;                  /* Soft limit for node size */
  u8 bFts4;                       /* True for FTS4, false for FTS3 */
  u8 bHasStat;                    /* True if %_stat table exists (2==unknown) */

  const char *zName;              /* virtual table name */
  int nColumn;                    /* number of named columns in virtual table */
  char **azColumn;                /* column names.  malloced */
  u8 *abNotindexed;               /* True for 'notindexed' columns */
  sqlite3_tokenizer *pTokenizer;  /* tokenizer for inserts and queries */
  char *zContentTbl;              /* content=xxx option, or NULL */
  char *zLanguageid;              /* languageid=xxx option, or NULL */
  int nAutoincrmerge;             /* Value configured by 'automerge' */
  u32 nLeafAdd;                   /* Number of leaf blocks added this trans */

  /* Precompiled statements used by the implementation. Each of these 
  ** statements is run and reset within a single virtual table API call. 
  */
  sqlite3_stmt *aStmt[40];

  char *zReadExprlist;
  char *zWriteExprlist;

  int nNodeSize;                  /* Soft limit for node size */
  u8 bFts4;                       /* True for FTS4, false for FTS3 */
  u8 bHasStat;                    /* True if %_stat table exists (2==unknown) */

  char *zTerm;                    /* Pointer to previous term buffer */
  int nTerm;                      /* Number of bytes in zTerm */
  int nMalloc;                    /* Size of malloc'd buffer at zMalloc */
  char *zMalloc;                  /* Malloc'd space (possibly) used for zTerm */
  int nSize;                      /* Size of allocation at aData */
  int nData;                      /* Bytes of data in aData */
  char *aData;                    /* Pointer to block from malloc() */

};

/*
** Type SegmentNode is used by the following three functions to create
** the interior part of the segment b+-tree structures (everything except
** the leaf nodes). These functions and type are only ever used by code
** within the fts3SegWriterXXX() family of functions described above.
................................................................................
#define SQL_DELETE_SEGDIR_ENTRY       30
#define SQL_SHIFT_SEGDIR_ENTRY        31
#define SQL_SELECT_SEGDIR             32
#define SQL_CHOMP_SEGDIR              33
#define SQL_SEGMENT_IS_APPENDABLE     34
#define SQL_SELECT_INDEXES            35
#define SQL_SELECT_MXLEVEL            36





/*
** This function is used to obtain an SQLite prepared statement handle
** for the statement identified by the second argument. If successful,
** *pp is set to the requested statement handle and SQLITE_OK returned.
** Otherwise, an SQLite error code is returned and *pp is set to 0.
**
................................................................................

/* SQL_SELECT_INDEXES
**   Return the list of valid segment indexes for absolute level ?  */
/* 35 */  "SELECT idx FROM %Q.'%q_segdir' WHERE level=? ORDER BY 1 ASC",

/* SQL_SELECT_MXLEVEL
**   Return the largest relative level in the FTS index or indexes.  */
/* 36 */  "SELECT max( level %% 1024 ) FROM %Q.'%q_segdir'"











  };
  int rc = SQLITE_OK;
  sqlite3_stmt *pStmt;

  assert( SizeofArray(azSql)==SizeofArray(p->aStmt) );
  assert( eStmt<SizeofArray(azSql) && eStmt>=0 );
  
................................................................................
static int fts3WriteSegdir(
  Fts3Table *p,                   /* Virtual table handle */
  sqlite3_int64 iLevel,           /* Value for "level" field (absolute level) */
  int iIdx,                       /* Value for "idx" field */
  sqlite3_int64 iStartBlock,      /* Value for "start_block" field */
  sqlite3_int64 iLeafEndBlock,    /* Value for "leaves_end_block" field */
  sqlite3_int64 iEndBlock,        /* Value for "end_block" field */

  char *zRoot,                    /* Blob value for "root" field */
  int nRoot                       /* Number of bytes in buffer zRoot */
){
  sqlite3_stmt *pStmt;
  int rc = fts3SqlStmt(p, SQL_INSERT_SEGDIR, &pStmt, 0);
  if( rc==SQLITE_OK ){
    sqlite3_bind_int64(pStmt, 1, iLevel);
    sqlite3_bind_int(pStmt, 2, iIdx);
    sqlite3_bind_int64(pStmt, 3, iStartBlock);
    sqlite3_bind_int64(pStmt, 4, iLeafEndBlock);

    sqlite3_bind_int64(pStmt, 5, iEndBlock);





    sqlite3_bind_blob(pStmt, 6, zRoot, nRoot, SQLITE_STATIC);
    sqlite3_step(pStmt);
    rc = sqlite3_reset(pStmt);
  }
  return rc;
}

................................................................................
    nSuffix = nTerm;
    nReq = 1 +                              /* varint containing prefix size */
      sqlite3Fts3VarintLen(nTerm) +         /* varint containing suffix size */
      nTerm +                               /* Term suffix */
      sqlite3Fts3VarintLen(nDoclist) +      /* Size of doclist */
      nDoclist;                             /* Doclist data */
  }




  /* If the buffer currently allocated is too small for this entry, realloc
  ** the buffer to make it large enough.
  */
  if( nReq>pWriter->nSize ){
    char *aNew = sqlite3_realloc(pWriter->aData, nReq);
    if( !aNew ) return SQLITE_NOMEM;
................................................................................
    iLastLeaf = pWriter->iFree;
    rc = fts3WriteSegment(p, pWriter->iFree++, pWriter->aData, pWriter->nData);
    if( rc==SQLITE_OK ){
      rc = fts3NodeWrite(p, pWriter->pTree, 1,
          pWriter->iFirst, pWriter->iFree, &iLast, &zRoot, &nRoot);
    }
    if( rc==SQLITE_OK ){
      rc = fts3WriteSegdir(
          p, iLevel, iIdx, pWriter->iFirst, iLastLeaf, iLast, zRoot, nRoot);
    }
  }else{
    /* The entire tree fits on the root node. Write it to the segdir table. */
    rc = fts3WriteSegdir(
        p, iLevel, iIdx, 0, 0, 0, pWriter->aData, pWriter->nData);
  }
  p->nLeafAdd++;
  return rc;
}

/*
** Release all memory held by the SegmentWriter object passed as the 
................................................................................
      getAbsoluteLevel(p, iLangid, iIndex, FTS3_SEGDIR_MAXLEVEL-1)
  );
  if( SQLITE_ROW==sqlite3_step(pStmt) ){
    *pnMax = sqlite3_column_int64(pStmt, 0);
  }
  return sqlite3_reset(pStmt);
}
































/*
** Delete all entries in the %_segments table associated with the segment
** opened with seg-reader pSeg. This function does not affect the contents
** of the %_segdir table.
*/
static int fts3DeleteSegment(
................................................................................
    sqlite3_free(pCsr->aBuffer);

    pCsr->nSegment = 0;
    pCsr->apSegment = 0;
    pCsr->aBuffer = 0;
  }
}







































































































































/*
** Merge all level iLevel segments in the database into a single 
** iLevel+1 segment. Or, if iLevel<0, merge all segments into a
** single segment with a level equal to the numerically largest level 
** currently present in the database.
**
................................................................................
  int rc;                         /* Return code */
  int iIdx = 0;                   /* Index of new segment */
  sqlite3_int64 iNewLevel = 0;    /* Level/index to create new segment at */
  SegmentWriter *pWriter = 0;     /* Used to write the new, merged, segment */
  Fts3SegFilter filter;           /* Segment term filter condition */
  Fts3MultiSegReader csr;         /* Cursor to iterate through level(s) */
  int bIgnoreEmpty = 0;           /* True to ignore empty segments */


  assert( iLevel==FTS3_SEGCURSOR_ALL
       || iLevel==FTS3_SEGCURSOR_PENDING
       || iLevel>=0
  );
  assert( iLevel<FTS3_SEGDIR_MAXLEVEL );
  assert( iIndex>=0 && iIndex<p->nIndex );

  rc = sqlite3Fts3SegReaderCursor(p, iLangid, iIndex, iLevel, 0, 0, 1, 0, &csr);
  if( rc!=SQLITE_OK || csr.nSegment==0 ) goto finished;






  if( iLevel==FTS3_SEGCURSOR_ALL ){
    /* This call is to merge all segments in the database to a single
    ** segment. The level of the new segment is equal to the numerically
    ** greatest segment level currently present in the database for this
    ** index. The idx of the new segment is always 0.  */
    if( csr.nSegment==1 ){
      rc = SQLITE_DONE;
      goto finished;
    }
    rc = fts3SegmentMaxLevel(p, iLangid, iIndex, &iNewLevel);
    bIgnoreEmpty = 1;

  }else if( iLevel==FTS3_SEGCURSOR_PENDING ){
    iNewLevel = getAbsoluteLevel(p, iLangid, iIndex, 0);
    rc = fts3AllocateSegdirIdx(p, iLangid, iIndex, 0, &iIdx);
  }else{
    /* This call is to merge all segments at level iLevel. find the next
    ** available segment index at level iLevel+1. The call to
    ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to 
    ** a single iLevel+2 segment if necessary.  */
    rc = fts3AllocateSegdirIdx(p, iLangid, iIndex, iLevel+1, &iIdx);
    iNewLevel = getAbsoluteLevel(p, iLangid, iIndex, iLevel+1);


  }
  if( rc!=SQLITE_OK ) goto finished;

  assert( csr.nSegment>0 );
  assert( iNewLevel>=getAbsoluteLevel(p, iLangid, iIndex, 0) );
  assert( iNewLevel<getAbsoluteLevel(p, iLangid, iIndex,FTS3_SEGDIR_MAXLEVEL) );

  memset(&filter, 0, sizeof(Fts3SegFilter));
  filter.flags = FTS3_SEGMENT_REQUIRE_POS;
  filter.flags |= (bIgnoreEmpty ? FTS3_SEGMENT_IGNORE_EMPTY : 0);
................................................................................
  while( SQLITE_OK==rc ){
    rc = sqlite3Fts3SegReaderStep(p, &csr);
    if( rc!=SQLITE_ROW ) break;
    rc = fts3SegWriterAdd(p, &pWriter, 1, 
        csr.zTerm, csr.nTerm, csr.aDoclist, csr.nDoclist);
  }
  if( rc!=SQLITE_OK ) goto finished;
  assert( pWriter );

  if( iLevel!=FTS3_SEGCURSOR_PENDING ){
    rc = fts3DeleteSegdir(
        p, iLangid, iIndex, iLevel, csr.apSegment, csr.nSegment
    );
    if( rc!=SQLITE_OK ) goto finished;
  }

  rc = fts3SegWriterFlush(p, pWriter, iNewLevel, iIdx);







 finished:
  fts3SegWriterFree(pWriter);
  sqlite3Fts3SegReaderFinish(&csr);
  return rc;
}


/* 
** Flush the contents of pendingTerms to level 0 segments.
*/
int sqlite3Fts3PendingTermsFlush(Fts3Table *p){
  int rc = SQLITE_OK;
  int i;
        
  for(i=0; rc==SQLITE_OK && i<p->nIndex; i++){
    rc = fts3SegmentMerge(p, p->iPrevLangid, i, FTS3_SEGCURSOR_PENDING);
................................................................................
  }
  sqlite3Fts3PendingTermsClear(p);

  /* Determine the auto-incr-merge setting if unknown.  If enabled,
  ** estimate the number of leaf blocks of content to be written
  */
  if( rc==SQLITE_OK && p->bHasStat
   && p->bAutoincrmerge==0xff && p->nLeafAdd>0
  ){
    sqlite3_stmt *pStmt = 0;
    rc = fts3SqlStmt(p, SQL_SELECT_STAT, &pStmt, 0);
    if( rc==SQLITE_OK ){
      sqlite3_bind_int(pStmt, 1, FTS_STAT_AUTOINCRMERGE);
      rc = sqlite3_step(pStmt);

      p->bAutoincrmerge = (rc==SQLITE_ROW && sqlite3_column_int(pStmt, 0));




      rc = sqlite3_reset(pStmt);
    }
  }
  return rc;
}

/*
................................................................................
struct IncrmergeWriter {
  int nLeafEst;                   /* Space allocated for leaf blocks */
  int nWork;                      /* Number of leaf pages flushed */
  sqlite3_int64 iAbsLevel;        /* Absolute level of input segments */
  int iIdx;                       /* Index of *output* segment in iAbsLevel+1 */
  sqlite3_int64 iStart;           /* Block number of first allocated block */
  sqlite3_int64 iEnd;             /* Block number of last allocated block */


  NodeWriter aNodeWriter[FTS_MAX_APPENDABLE_HEIGHT];
};

/*
** An object of the following type is used to read data from a single
** FTS segment node. See the following functions:
**
................................................................................

    nSuffix = nTerm;
    nSpace  = 1;
    nSpace += sqlite3Fts3VarintLen(nSuffix) + nSuffix;
    nSpace += sqlite3Fts3VarintLen(nDoclist) + nDoclist;
  }


  blobGrowBuffer(&pLeaf->block, pLeaf->block.n + nSpace, &rc);

  if( rc==SQLITE_OK ){
    if( pLeaf->block.n==0 ){
      pLeaf->block.n = 1;
      pLeaf->block.a[0] = '\0';
    }
    rc = fts3AppendToNode(
        &pLeaf->block, &pLeaf->key, zTerm, nTerm, aDoclist, nDoclist
................................................................................
  if( rc==SQLITE_OK ){
    rc = fts3WriteSegdir(p, 
        pWriter->iAbsLevel+1,               /* level */
        pWriter->iIdx,                      /* idx */
        pWriter->iStart,                    /* start_block */
        pWriter->aNodeWriter[0].iBlock,     /* leaves_end_block */
        pWriter->iEnd,                      /* end_block */

        pRoot->block.a, pRoot->block.n      /* root */
    );
  }
  sqlite3_free(pRoot->block.a);
  sqlite3_free(pRoot->key.a);

  *pRc = rc;
................................................................................

    /* Read the %_segdir entry for index iIdx absolute level (iAbsLevel+1) */
    sqlite3_bind_int64(pSelect, 1, iAbsLevel+1);
    sqlite3_bind_int(pSelect, 2, iIdx);
    if( sqlite3_step(pSelect)==SQLITE_ROW ){
      iStart = sqlite3_column_int64(pSelect, 1);
      iLeafEnd = sqlite3_column_int64(pSelect, 2);
      iEnd = sqlite3_column_int64(pSelect, 3);




      nRoot = sqlite3_column_bytes(pSelect, 4);
      aRoot = sqlite3_column_blob(pSelect, 4);
    }else{
      return sqlite3_reset(pSelect);
    }

    /* Check for the zero-length marker in the %_segments table */
................................................................................
  return SQLITE_OK;
}


/*
** Attempt an incremental merge that writes nMerge leaf blocks.
**
** Incremental merges happen nMin segments at a time. The two
** segments to be merged are the nMin oldest segments (the ones with
** the smallest indexes) in the highest level that contains at least
** nMin segments. Multiple merges might occur in an attempt to write the 
** quota of nMerge leaf blocks.
*/
int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){
  int rc;                         /* Return code */
  int nRem = nMerge;              /* Number of leaf pages yet to  be written */
  Fts3MultiSegReader *pCsr;       /* Cursor used to read input data */
  Fts3SegFilter *pFilter;         /* Filter used with cursor pCsr */
  IncrmergeWriter *pWriter;       /* Writer object */
................................................................................
  pCsr = (Fts3MultiSegReader *)&pFilter[1];

  rc = fts3IncrmergeHintLoad(p, &hint);
  while( rc==SQLITE_OK && nRem>0 ){
    const i64 nMod = FTS3_SEGDIR_MAXLEVEL * p->nIndex;
    sqlite3_stmt *pFindLevel = 0; /* SQL used to determine iAbsLevel */
    int bUseHint = 0;             /* True if attempting to append */


    /* Search the %_segdir table for the absolute level with the smallest
    ** relative level number that contains at least nMin segments, if any.
    ** If one is found, set iAbsLevel to the absolute level number and
    ** nSeg to nMin. If no level with at least nMin segments can be found, 
    ** set nSeg to -1.
    */
................................................................................
    ** indexes of absolute level iAbsLevel. If this cursor is opened using 
    ** the 'hint' parameters, it is possible that there are less than nSeg
    ** segments available in level iAbsLevel. In this case, no work is
    ** done on iAbsLevel - fall through to the next iteration of the loop 
    ** to start work on some other level.  */
    memset(pWriter, 0, nAlloc);
    pFilter->flags = FTS3_SEGMENT_REQUIRE_POS;













    if( rc==SQLITE_OK ){
      rc = fts3IncrmergeCsr(p, iAbsLevel, nSeg, pCsr);
    }
    if( SQLITE_OK==rc && pCsr->nSegment==nSeg
     && SQLITE_OK==(rc = sqlite3Fts3SegReaderStart(p, pCsr, pFilter))
     && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pCsr))
    ){
      int iIdx = 0;               /* Largest idx in level (iAbsLevel+1) */
      rc = fts3IncrmergeOutputIdx(p, iAbsLevel, &iIdx);
      if( rc==SQLITE_OK ){
        if( bUseHint && iIdx>0 ){
          const char *zKey = pCsr->zTerm;
          int nKey = pCsr->nTerm;
          rc = fts3IncrmergeLoad(p, iAbsLevel, iIdx-1, zKey, nKey, pWriter);
        }else{
          rc = fts3IncrmergeWriter(p, iAbsLevel, iIdx, pCsr, pWriter);
        }
      }

      if( rc==SQLITE_OK && pWriter->nLeafEst ){
        fts3LogMerge(nSeg, iAbsLevel);
        do {
          rc = fts3IncrmergeAppend(p, pWriter, pCsr);
          if( rc==SQLITE_OK ) rc = sqlite3Fts3SegReaderStep(p, pCsr);
................................................................................
          if( nSeg!=0 ){
            bDirtyHint = 1;
            fts3IncrmergeHintPush(&hint, iAbsLevel, nSeg, &rc);
          }
        }
      }




      fts3IncrmergeRelease(p, pWriter, &rc);



    }

    sqlite3Fts3SegReaderFinish(pCsr);
  }

  /* Write the hint values into the %_stat table for the next incr-merger */
  if( bDirtyHint && rc==SQLITE_OK ){
................................................................................
*/
static int fts3DoAutoincrmerge(
  Fts3Table *p,                   /* FTS3 table handle */
  const char *zParam              /* Nul-terminated string containing boolean */
){
  int rc = SQLITE_OK;
  sqlite3_stmt *pStmt = 0;
  p->bAutoincrmerge = fts3Getint(&zParam)!=0;



  if( !p->bHasStat ){
    assert( p->bFts4==0 );
    sqlite3Fts3CreateStatTable(&rc, p);
    if( rc ) return rc;
  }
  rc = fts3SqlStmt(p, SQL_REPLACE_STAT, &pStmt, 0);
  if( rc ) return rc;
  sqlite3_bind_int(pStmt, 1, FTS_STAT_AUTOINCRMERGE);
  sqlite3_bind_int(pStmt, 2, p->bAutoincrmerge);
  sqlite3_step(pStmt);
  rc = sqlite3_reset(pStmt);
  return rc;
}

/*
** Return a 64-bit checksum for the FTS index entry specified by the

  char *zTerm;                    /* Pointer to previous term buffer */
  int nTerm;                      /* Number of bytes in zTerm */
  int nMalloc;                    /* Size of malloc'd buffer at zMalloc */
  char *zMalloc;                  /* Malloc'd space (possibly) used for zTerm */
  int nSize;                      /* Size of allocation at aData */
  int nData;                      /* Bytes of data in aData */
  char *aData;                    /* Pointer to block from malloc() */
  i64 nLeafData;                  /* Number of bytes of leaf data written */
};

/*
** Type SegmentNode is used by the following three functions to create
** the interior part of the segment b+-tree structures (everything except
** the leaf nodes). These functions and type are only ever used by code
** within the fts3SegWriterXXX() family of functions described above.
................................................................................
#define SQL_DELETE_SEGDIR_ENTRY       30
#define SQL_SHIFT_SEGDIR_ENTRY        31
#define SQL_SELECT_SEGDIR             32
#define SQL_CHOMP_SEGDIR              33
#define SQL_SEGMENT_IS_APPENDABLE     34
#define SQL_SELECT_INDEXES            35
#define SQL_SELECT_MXLEVEL            36

#define SQL_SELECT_LEVEL_RANGE2       37
#define SQL_UPDATE_LEVEL_IDX          38
#define SQL_UPDATE_LEVEL              39

/*
** This function is used to obtain an SQLite prepared statement handle
** for the statement identified by the second argument. If successful,
** *pp is set to the requested statement handle and SQLITE_OK returned.
** Otherwise, an SQLite error code is returned and *pp is set to 0.
**
................................................................................

/* SQL_SELECT_INDEXES
**   Return the list of valid segment indexes for absolute level ?  */
/* 35 */  "SELECT idx FROM %Q.'%q_segdir' WHERE level=? ORDER BY 1 ASC",

/* SQL_SELECT_MXLEVEL
**   Return the largest relative level in the FTS index or indexes.  */
/* 36 */  "SELECT max( level %% 1024 ) FROM %Q.'%q_segdir'",

          /* Return segments in order from oldest to newest.*/ 
/* 37 */  "SELECT level, idx, end_block "
            "FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ? "
            "ORDER BY level DESC, idx ASC",

          /* Update statements used while promoting segments */
/* 38 */  "UPDATE OR FAIL %Q.'%q_segdir' SET level=-1,idx=? "
            "WHERE level=? AND idx=?",
/* 39 */  "UPDATE OR FAIL %Q.'%q_segdir' SET level=? WHERE level=-1"

  };
  int rc = SQLITE_OK;
  sqlite3_stmt *pStmt;

  assert( SizeofArray(azSql)==SizeofArray(p->aStmt) );
  assert( eStmt<SizeofArray(azSql) && eStmt>=0 );
  
................................................................................
static int fts3WriteSegdir(
  Fts3Table *p,                   /* Virtual table handle */
  sqlite3_int64 iLevel,           /* Value for "level" field (absolute level) */
  int iIdx,                       /* Value for "idx" field */
  sqlite3_int64 iStartBlock,      /* Value for "start_block" field */
  sqlite3_int64 iLeafEndBlock,    /* Value for "leaves_end_block" field */
  sqlite3_int64 iEndBlock,        /* Value for "end_block" field */
  sqlite3_int64 nLeafData,        /* Bytes of leaf data in segment */
  char *zRoot,                    /* Blob value for "root" field */
  int nRoot                       /* Number of bytes in buffer zRoot */
){
  sqlite3_stmt *pStmt;
  int rc = fts3SqlStmt(p, SQL_INSERT_SEGDIR, &pStmt, 0);
  if( rc==SQLITE_OK ){
    sqlite3_bind_int64(pStmt, 1, iLevel);
    sqlite3_bind_int(pStmt, 2, iIdx);
    sqlite3_bind_int64(pStmt, 3, iStartBlock);
    sqlite3_bind_int64(pStmt, 4, iLeafEndBlock);
    if( nLeafData==0 ){
      sqlite3_bind_int64(pStmt, 5, iEndBlock);
    }else{
      char *zEnd = sqlite3_mprintf("%lld %lld", iEndBlock, nLeafData);
      if( !zEnd ) return SQLITE_NOMEM;
      sqlite3_bind_text(pStmt, 5, zEnd, -1, sqlite3_free);
    }
    sqlite3_bind_blob(pStmt, 6, zRoot, nRoot, SQLITE_STATIC);
    sqlite3_step(pStmt);
    rc = sqlite3_reset(pStmt);
  }
  return rc;
}

................................................................................
    nSuffix = nTerm;
    nReq = 1 +                              /* varint containing prefix size */
      sqlite3Fts3VarintLen(nTerm) +         /* varint containing suffix size */
      nTerm +                               /* Term suffix */
      sqlite3Fts3VarintLen(nDoclist) +      /* Size of doclist */
      nDoclist;                             /* Doclist data */
  }

  /* Increase the total number of bytes written to account for the new entry. */
  pWriter->nLeafData += nReq;

  /* If the buffer currently allocated is too small for this entry, realloc
  ** the buffer to make it large enough.
  */
  if( nReq>pWriter->nSize ){
    char *aNew = sqlite3_realloc(pWriter->aData, nReq);
    if( !aNew ) return SQLITE_NOMEM;
................................................................................
    iLastLeaf = pWriter->iFree;
    rc = fts3WriteSegment(p, pWriter->iFree++, pWriter->aData, pWriter->nData);
    if( rc==SQLITE_OK ){
      rc = fts3NodeWrite(p, pWriter->pTree, 1,
          pWriter->iFirst, pWriter->iFree, &iLast, &zRoot, &nRoot);
    }
    if( rc==SQLITE_OK ){
      rc = fts3WriteSegdir(p, iLevel, iIdx, 
          pWriter->iFirst, iLastLeaf, iLast, pWriter->nLeafData, zRoot, nRoot);
    }
  }else{
    /* The entire tree fits on the root node. Write it to the segdir table. */
    rc = fts3WriteSegdir(p, iLevel, iIdx, 
        0, 0, 0, pWriter->nLeafData, pWriter->aData, pWriter->nData);
  }
  p->nLeafAdd++;
  return rc;
}

/*
** Release all memory held by the SegmentWriter object passed as the 
................................................................................
      getAbsoluteLevel(p, iLangid, iIndex, FTS3_SEGDIR_MAXLEVEL-1)
  );
  if( SQLITE_ROW==sqlite3_step(pStmt) ){
    *pnMax = sqlite3_column_int64(pStmt, 0);
  }
  return sqlite3_reset(pStmt);
}

/*
** iAbsLevel is an absolute level that may be assumed to exist within
** the database. This function checks if it is the largest level number
** within its index. Assuming no error occurs, *pbMax is set to 1 if
** iAbsLevel is indeed the largest level, or 0 otherwise, and SQLITE_OK
** is returned. If an error occurs, an error code is returned and the
** final value of *pbMax is undefined.
*/
static int fts3SegmentIsMaxLevel(Fts3Table *p, i64 iAbsLevel, int *pbMax){

  /* Set pStmt to the compiled version of:
  **
  **   SELECT max(level) FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?
  **
  ** (1024 is actually the value of macro FTS3_SEGDIR_PREFIXLEVEL_STR).
  */
  sqlite3_stmt *pStmt;
  int rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_MAX_LEVEL, &pStmt, 0);
  if( rc!=SQLITE_OK ) return rc;
  sqlite3_bind_int64(pStmt, 1, iAbsLevel+1);
  sqlite3_bind_int64(pStmt, 2, 
      ((iAbsLevel/FTS3_SEGDIR_MAXLEVEL)+1) * FTS3_SEGDIR_MAXLEVEL
  );

  *pbMax = 0;
  if( SQLITE_ROW==sqlite3_step(pStmt) ){
    *pbMax = sqlite3_column_type(pStmt, 0)==SQLITE_NULL;
  }
  return sqlite3_reset(pStmt);
}

/*
** Delete all entries in the %_segments table associated with the segment
** opened with seg-reader pSeg. This function does not affect the contents
** of the %_segdir table.
*/
static int fts3DeleteSegment(
................................................................................
    sqlite3_free(pCsr->aBuffer);

    pCsr->nSegment = 0;
    pCsr->apSegment = 0;
    pCsr->aBuffer = 0;
  }
}

/*
** Decode the "end_block" field, selected by column iCol of the SELECT 
** statement passed as the first argument. 
**
** The "end_block" field may contain either an integer, or a text field
** containing the text representation of two non-negative integers separated 
** by one or more space (0x20) characters. In the first case, set *piEndBlock 
** to the integer value and *pnByte to zero before returning. In the second, 
** set *piEndBlock to the first value and *pnByte to the second.
*/
static void fts3ReadEndBlockField(
  sqlite3_stmt *pStmt, 
  int iCol, 
  i64 *piEndBlock,
  i64 *pnByte
){
  const unsigned char *zText = sqlite3_column_text(pStmt, iCol);
  if( zText ){
    int i;
    int iMul = 1;
    i64 iVal = 0;
    for(i=0; zText[i]>='0' && zText[i]<='9'; i++){
      iVal = iVal*10 + (zText[i] - '0');
    }
    *piEndBlock = iVal;
    while( zText[i]==' ' ) i++;
    iVal = 0;
    if( zText[i]=='-' ){
      i++;
      iMul = -1;
    }
    for(/* no-op */; zText[i]>='0' && zText[i]<='9'; i++){
      iVal = iVal*10 + (zText[i] - '0');
    }
    *pnByte = (iVal * (i64)iMul);
  }
}


/*
** A segment of size nByte bytes has just been written to absolute level
** iAbsLevel. Promote any segments that should be promoted as a result.
*/
static int fts3PromoteSegments(
  Fts3Table *p,                   /* FTS table handle */
  sqlite3_int64 iAbsLevel,        /* Absolute level just updated */
  sqlite3_int64 nByte             /* Size of new segment at iAbsLevel */
){
  int rc = SQLITE_OK;
  sqlite3_stmt *pRange;

  rc = fts3SqlStmt(p, SQL_SELECT_LEVEL_RANGE2, &pRange, 0);

  if( rc==SQLITE_OK ){
    int bOk = 0;
    i64 iLast = (iAbsLevel/FTS3_SEGDIR_MAXLEVEL + 1) * FTS3_SEGDIR_MAXLEVEL - 1;
    i64 nLimit = (nByte*3)/2;

    /* Loop through all entries in the %_segdir table corresponding to 
    ** segments in this index on levels greater than iAbsLevel. If there is
    ** at least one such segment, and it is possible to determine that all 
    ** such segments are smaller than nLimit bytes in size, they will be 
    ** promoted to level iAbsLevel.  */
    sqlite3_bind_int64(pRange, 1, iAbsLevel+1);
    sqlite3_bind_int64(pRange, 2, iLast);
    while( SQLITE_ROW==sqlite3_step(pRange) ){
      i64 nSize, dummy;
      fts3ReadEndBlockField(pRange, 2, &dummy, &nSize);
      if( nSize<=0 || nSize>nLimit ){
        /* If nSize==0, then the %_segdir.end_block field does not not 
        ** contain a size value. This happens if it was written by an
        ** old version of FTS. In this case it is not possible to determine
        ** the size of the segment, and so segment promotion does not
        ** take place.  */
        bOk = 0;
        break;
      }
      bOk = 1;
    }
    rc = sqlite3_reset(pRange);

    if( bOk ){
      int iIdx = 0;
      sqlite3_stmt *pUpdate1;
      sqlite3_stmt *pUpdate2;

      if( rc==SQLITE_OK ){
        rc = fts3SqlStmt(p, SQL_UPDATE_LEVEL_IDX, &pUpdate1, 0);
      }
      if( rc==SQLITE_OK ){
        rc = fts3SqlStmt(p, SQL_UPDATE_LEVEL, &pUpdate2, 0);
      }

      if( rc==SQLITE_OK ){

        /* Loop through all %_segdir entries for segments in this index with
        ** levels equal to or greater than iAbsLevel. As each entry is visited,
        ** updated it to set (level = -1) and (idx = N), where N is 0 for the
        ** oldest segment in the range, 1 for the next oldest, and so on.
        **
        ** In other words, move all segments being promoted to level -1,
        ** setting the "idx" fields as appropriate to keep them in the same
        ** order. The contents of level -1 (which is never used, except
        ** transiently here), will be moved back to level iAbsLevel below.  */
        sqlite3_bind_int64(pRange, 1, iAbsLevel);
        while( SQLITE_ROW==sqlite3_step(pRange) ){
          sqlite3_bind_int(pUpdate1, 1, iIdx++);
          sqlite3_bind_int(pUpdate1, 2, sqlite3_column_int(pRange, 0));
          sqlite3_bind_int(pUpdate1, 3, sqlite3_column_int(pRange, 1));
          sqlite3_step(pUpdate1);
          rc = sqlite3_reset(pUpdate1);
          if( rc!=SQLITE_OK ){
            sqlite3_reset(pRange);
            break;
          }
        }
      }
      if( rc==SQLITE_OK ){
        rc = sqlite3_reset(pRange);
      }

      /* Move level -1 to level iAbsLevel */
      if( rc==SQLITE_OK ){
        sqlite3_bind_int64(pUpdate2, 1, iAbsLevel);
        sqlite3_step(pUpdate2);
        rc = sqlite3_reset(pUpdate2);
      }
    }
  }


  return rc;
}

/*
** Merge all level iLevel segments in the database into a single 
** iLevel+1 segment. Or, if iLevel<0, merge all segments into a
** single segment with a level equal to the numerically largest level 
** currently present in the database.
**
................................................................................
  int rc;                         /* Return code */
  int iIdx = 0;                   /* Index of new segment */
  sqlite3_int64 iNewLevel = 0;    /* Level/index to create new segment at */
  SegmentWriter *pWriter = 0;     /* Used to write the new, merged, segment */
  Fts3SegFilter filter;           /* Segment term filter condition */
  Fts3MultiSegReader csr;         /* Cursor to iterate through level(s) */
  int bIgnoreEmpty = 0;           /* True to ignore empty segments */
  i64 iMaxLevel = 0;              /* Max level number for this index/langid */

  assert( iLevel==FTS3_SEGCURSOR_ALL
       || iLevel==FTS3_SEGCURSOR_PENDING
       || iLevel>=0
  );
  assert( iLevel<FTS3_SEGDIR_MAXLEVEL );
  assert( iIndex>=0 && iIndex<p->nIndex );

  rc = sqlite3Fts3SegReaderCursor(p, iLangid, iIndex, iLevel, 0, 0, 1, 0, &csr);
  if( rc!=SQLITE_OK || csr.nSegment==0 ) goto finished;

  if( iLevel!=FTS3_SEGCURSOR_PENDING ){
    rc = fts3SegmentMaxLevel(p, iLangid, iIndex, &iMaxLevel);
    if( rc!=SQLITE_OK ) goto finished;
  }

  if( iLevel==FTS3_SEGCURSOR_ALL ){
    /* This call is to merge all segments in the database to a single
    ** segment. The level of the new segment is equal to the numerically
    ** greatest segment level currently present in the database for this
    ** index. The idx of the new segment is always 0.  */
    if( csr.nSegment==1 ){
      rc = SQLITE_DONE;
      goto finished;
    }
    iNewLevel = iMaxLevel;
    bIgnoreEmpty = 1;




  }else{
    /* This call is to merge all segments at level iLevel. find the next
    ** available segment index at level iLevel+1. The call to
    ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to 
    ** a single iLevel+2 segment if necessary.  */
    assert( FTS3_SEGCURSOR_PENDING==-1 );
    iNewLevel = getAbsoluteLevel(p, iLangid, iIndex, iLevel+1);
    rc = fts3AllocateSegdirIdx(p, iLangid, iIndex, iLevel+1, &iIdx);
    bIgnoreEmpty = (iLevel!=FTS3_SEGCURSOR_PENDING) && (iNewLevel>iMaxLevel);
  }
  if( rc!=SQLITE_OK ) goto finished;

  assert( csr.nSegment>0 );
  assert( iNewLevel>=getAbsoluteLevel(p, iLangid, iIndex, 0) );
  assert( iNewLevel<getAbsoluteLevel(p, iLangid, iIndex,FTS3_SEGDIR_MAXLEVEL) );

  memset(&filter, 0, sizeof(Fts3SegFilter));
  filter.flags = FTS3_SEGMENT_REQUIRE_POS;
  filter.flags |= (bIgnoreEmpty ? FTS3_SEGMENT_IGNORE_EMPTY : 0);
................................................................................
  while( SQLITE_OK==rc ){
    rc = sqlite3Fts3SegReaderStep(p, &csr);
    if( rc!=SQLITE_ROW ) break;
    rc = fts3SegWriterAdd(p, &pWriter, 1, 
        csr.zTerm, csr.nTerm, csr.aDoclist, csr.nDoclist);
  }
  if( rc!=SQLITE_OK ) goto finished;
  assert( pWriter || bIgnoreEmpty );

  if( iLevel!=FTS3_SEGCURSOR_PENDING ){
    rc = fts3DeleteSegdir(
        p, iLangid, iIndex, iLevel, csr.apSegment, csr.nSegment
    );
    if( rc!=SQLITE_OK ) goto finished;
  }
  if( pWriter ){
    rc = fts3SegWriterFlush(p, pWriter, iNewLevel, iIdx);
    if( rc==SQLITE_OK ){
      if( iLevel==FTS3_SEGCURSOR_PENDING || iNewLevel<iMaxLevel ){
        rc = fts3PromoteSegments(p, iNewLevel, pWriter->nLeafData);
      }
    }
  }

 finished:
  fts3SegWriterFree(pWriter);
  sqlite3Fts3SegReaderFinish(&csr);
  return rc;
}


/* 
** Flush the contents of pendingTerms to level 0 segments. 
*/
int sqlite3Fts3PendingTermsFlush(Fts3Table *p){
  int rc = SQLITE_OK;
  int i;
        
  for(i=0; rc==SQLITE_OK && i<p->nIndex; i++){
    rc = fts3SegmentMerge(p, p->iPrevLangid, i, FTS3_SEGCURSOR_PENDING);
................................................................................
  }
  sqlite3Fts3PendingTermsClear(p);

  /* Determine the auto-incr-merge setting if unknown.  If enabled,
  ** estimate the number of leaf blocks of content to be written
  */
  if( rc==SQLITE_OK && p->bHasStat
   && p->nAutoincrmerge==0xff && p->nLeafAdd>0
  ){
    sqlite3_stmt *pStmt = 0;
    rc = fts3SqlStmt(p, SQL_SELECT_STAT, &pStmt, 0);
    if( rc==SQLITE_OK ){
      sqlite3_bind_int(pStmt, 1, FTS_STAT_AUTOINCRMERGE);
      rc = sqlite3_step(pStmt);
      if( rc==SQLITE_ROW ){
        p->nAutoincrmerge = sqlite3_column_int(pStmt, 0);
        if( p->nAutoincrmerge==1 ) p->nAutoincrmerge = 8;
      }else if( rc==SQLITE_DONE ){
        p->nAutoincrmerge = 0;
      }
      rc = sqlite3_reset(pStmt);
    }
  }
  return rc;
}

/*
................................................................................
struct IncrmergeWriter {
  int nLeafEst;                   /* Space allocated for leaf blocks */
  int nWork;                      /* Number of leaf pages flushed */
  sqlite3_int64 iAbsLevel;        /* Absolute level of input segments */
  int iIdx;                       /* Index of *output* segment in iAbsLevel+1 */
  sqlite3_int64 iStart;           /* Block number of first allocated block */
  sqlite3_int64 iEnd;             /* Block number of last allocated block */
  sqlite3_int64 nLeafData;        /* Bytes of leaf page data so far */
  u8 bNoLeafData;                 /* If true, store 0 for segment size */
  NodeWriter aNodeWriter[FTS_MAX_APPENDABLE_HEIGHT];
};

/*
** An object of the following type is used to read data from a single
** FTS segment node. See the following functions:
**
................................................................................

    nSuffix = nTerm;
    nSpace  = 1;
    nSpace += sqlite3Fts3VarintLen(nSuffix) + nSuffix;
    nSpace += sqlite3Fts3VarintLen(nDoclist) + nDoclist;
  }

  pWriter->nLeafData += nSpace;
  blobGrowBuffer(&pLeaf->block, pLeaf->block.n + nSpace, &rc);

  if( rc==SQLITE_OK ){
    if( pLeaf->block.n==0 ){
      pLeaf->block.n = 1;
      pLeaf->block.a[0] = '\0';
    }
    rc = fts3AppendToNode(
        &pLeaf->block, &pLeaf->key, zTerm, nTerm, aDoclist, nDoclist
................................................................................
  if( rc==SQLITE_OK ){
    rc = fts3WriteSegdir(p, 
        pWriter->iAbsLevel+1,               /* level */
        pWriter->iIdx,                      /* idx */
        pWriter->iStart,                    /* start_block */
        pWriter->aNodeWriter[0].iBlock,     /* leaves_end_block */
        pWriter->iEnd,                      /* end_block */
        (pWriter->bNoLeafData==0 ? pWriter->nLeafData : 0),   /* end_block */
        pRoot->block.a, pRoot->block.n      /* root */
    );
  }
  sqlite3_free(pRoot->block.a);
  sqlite3_free(pRoot->key.a);

  *pRc = rc;
................................................................................

    /* Read the %_segdir entry for index iIdx absolute level (iAbsLevel+1) */
    sqlite3_bind_int64(pSelect, 1, iAbsLevel+1);
    sqlite3_bind_int(pSelect, 2, iIdx);
    if( sqlite3_step(pSelect)==SQLITE_ROW ){
      iStart = sqlite3_column_int64(pSelect, 1);
      iLeafEnd = sqlite3_column_int64(pSelect, 2);
      fts3ReadEndBlockField(pSelect, 3, &iEnd, &pWriter->nLeafData);
      if( pWriter->nLeafData<0 ){
        pWriter->nLeafData = pWriter->nLeafData * -1;
      }
      pWriter->bNoLeafData = (pWriter->nLeafData==0);
      nRoot = sqlite3_column_bytes(pSelect, 4);
      aRoot = sqlite3_column_blob(pSelect, 4);
    }else{
      return sqlite3_reset(pSelect);
    }

    /* Check for the zero-length marker in the %_segments table */
................................................................................
  return SQLITE_OK;
}


/*
** Attempt an incremental merge that writes nMerge leaf blocks.
**
** Incremental merges happen nMin segments at a time. The segments 
** to be merged are the nMin oldest segments (the ones with the smallest 
** values for the _segdir.idx field) in the highest level that contains 
** at least nMin segments. Multiple merges might occur in an attempt to 
** write the quota of nMerge leaf blocks.
*/
int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){
  int rc;                         /* Return code */
  int nRem = nMerge;              /* Number of leaf pages yet to  be written */
  Fts3MultiSegReader *pCsr;       /* Cursor used to read input data */
  Fts3SegFilter *pFilter;         /* Filter used with cursor pCsr */
  IncrmergeWriter *pWriter;       /* Writer object */
................................................................................
  pCsr = (Fts3MultiSegReader *)&pFilter[1];

  rc = fts3IncrmergeHintLoad(p, &hint);
  while( rc==SQLITE_OK && nRem>0 ){
    const i64 nMod = FTS3_SEGDIR_MAXLEVEL * p->nIndex;
    sqlite3_stmt *pFindLevel = 0; /* SQL used to determine iAbsLevel */
    int bUseHint = 0;             /* True if attempting to append */
    int iIdx = 0;                 /* Largest idx in level (iAbsLevel+1) */

    /* Search the %_segdir table for the absolute level with the smallest
    ** relative level number that contains at least nMin segments, if any.
    ** If one is found, set iAbsLevel to the absolute level number and
    ** nSeg to nMin. If no level with at least nMin segments can be found, 
    ** set nSeg to -1.
    */
................................................................................
    ** indexes of absolute level iAbsLevel. If this cursor is opened using 
    ** the 'hint' parameters, it is possible that there are less than nSeg
    ** segments available in level iAbsLevel. In this case, no work is
    ** done on iAbsLevel - fall through to the next iteration of the loop 
    ** to start work on some other level.  */
    memset(pWriter, 0, nAlloc);
    pFilter->flags = FTS3_SEGMENT_REQUIRE_POS;

    if( rc==SQLITE_OK ){
      rc = fts3IncrmergeOutputIdx(p, iAbsLevel, &iIdx);
      assert( bUseHint==1 || bUseHint==0 );
      if( iIdx==0 || (bUseHint && iIdx==1) ){
        int bIgnore;
        rc = fts3SegmentIsMaxLevel(p, iAbsLevel+1, &bIgnore);
        if( bIgnore ){
          pFilter->flags |= FTS3_SEGMENT_IGNORE_EMPTY;
        }
      }
    }

    if( rc==SQLITE_OK ){
      rc = fts3IncrmergeCsr(p, iAbsLevel, nSeg, pCsr);
    }
    if( SQLITE_OK==rc && pCsr->nSegment==nSeg
     && SQLITE_OK==(rc = sqlite3Fts3SegReaderStart(p, pCsr, pFilter))
     && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pCsr))
    ){



      if( bUseHint && iIdx>0 ){
        const char *zKey = pCsr->zTerm;
        int nKey = pCsr->nTerm;
        rc = fts3IncrmergeLoad(p, iAbsLevel, iIdx-1, zKey, nKey, pWriter);
      }else{
        rc = fts3IncrmergeWriter(p, iAbsLevel, iIdx, pCsr, pWriter);

      }

      if( rc==SQLITE_OK && pWriter->nLeafEst ){
        fts3LogMerge(nSeg, iAbsLevel);
        do {
          rc = fts3IncrmergeAppend(p, pWriter, pCsr);
          if( rc==SQLITE_OK ) rc = sqlite3Fts3SegReaderStep(p, pCsr);
................................................................................
          if( nSeg!=0 ){
            bDirtyHint = 1;
            fts3IncrmergeHintPush(&hint, iAbsLevel, nSeg, &rc);
          }
        }
      }

      if( nSeg!=0 ){
        pWriter->nLeafData = pWriter->nLeafData * -1;
      }
      fts3IncrmergeRelease(p, pWriter, &rc);
      if( nSeg==0 && pWriter->bNoLeafData==0 ){
        fts3PromoteSegments(p, iAbsLevel+1, pWriter->nLeafData);
      }
    }

    sqlite3Fts3SegReaderFinish(pCsr);
  }

  /* Write the hint values into the %_stat table for the next incr-merger */
  if( bDirtyHint && rc==SQLITE_OK ){
................................................................................
*/
static int fts3DoAutoincrmerge(
  Fts3Table *p,                   /* FTS3 table handle */
  const char *zParam              /* Nul-terminated string containing boolean */
){
  int rc = SQLITE_OK;
  sqlite3_stmt *pStmt = 0;
  p->nAutoincrmerge = fts3Getint(&zParam);
  if( p->nAutoincrmerge==1 || p->nAutoincrmerge>FTS3_MERGE_COUNT ){
    p->nAutoincrmerge = 8;
  }
  if( !p->bHasStat ){
    assert( p->bFts4==0 );
    sqlite3Fts3CreateStatTable(&rc, p);
    if( rc ) return rc;
  }
  rc = fts3SqlStmt(p, SQL_REPLACE_STAT, &pStmt, 0);
  if( rc ) return rc;
  sqlite3_bind_int(pStmt, 1, FTS_STAT_AUTOINCRMERGE);
  sqlite3_bind_int(pStmt, 2, p->nAutoincrmerge);
  sqlite3_step(pStmt);
  rc = sqlite3_reset(pStmt);
  return rc;
}

/*
** Return a 64-bit checksum for the FTS index entry specified by the

   0,                         /* sharedCacheEnabled */
   /* All the rest should always be initialized to zero */
   0,                         /* isInit */
   0,                         /* inProgress */
   0,                         /* isMutexInit */
   0,                         /* isMallocInit */
   0,                         /* isPCacheInit */
   0,                         /* pInitMutex */
   0,                         /* nRefInitMutex */
   0,                         /* xLog */
   0,                         /* pLogArg */
   0,                         /* bLocaltimeFault */
#ifdef SQLITE_ENABLE_SQLLOG
   0,                         /* xSqllog */
   0                          /* pSqllogArg */
#endif








};

/*
** Hash table for global functions - functions common to all
** database connections.  After initialization, this table is
** read-only.
*/

   0,                         /* sharedCacheEnabled */
   /* All the rest should always be initialized to zero */
   0,                         /* isInit */
   0,                         /* inProgress */
   0,                         /* isMutexInit */
   0,                         /* isMallocInit */
   0,                         /* isPCacheInit */
   0,                         /* nRefInitMutex */
   0,                         /* pInitMutex */
   0,                         /* xLog */
   0,                         /* pLogArg */

#ifdef SQLITE_ENABLE_SQLLOG
   0,                         /* xSqllog */
   0,                         /* pSqllogArg */
#endif
#ifdef SQLITE_VDBE_COVERAGE
   0,                         /* xVdbeBranch */
   0,                         /* pVbeBranchArg */
#endif
#ifndef SQLITE_OMIT_BUILTIN_TEST
   0,                         /* xTestCallback */
#endif
   0                          /* bLocaltimeFault */
};

/*
** Hash table for global functions - functions common to all
** database connections.  After initialization, this table is
** read-only.
*/

    */
    case SQLITE_TESTCTRL_BITVEC_TEST: {
      int sz = va_arg(ap, int);
      int *aProg = va_arg(ap, int*);
      rc = sqlite3BitvecBuiltinTest(sz, aProg);
      break;
    }























    /*
    **  sqlite3_test_control(BENIGN_MALLOC_HOOKS, xBegin, xEnd)
    **
    ** Register hooks to call to indicate which malloc() failures 
    ** are benign.
    */

    */
    case SQLITE_TESTCTRL_BITVEC_TEST: {
      int sz = va_arg(ap, int);
      int *aProg = va_arg(ap, int*);
      rc = sqlite3BitvecBuiltinTest(sz, aProg);
      break;
    }

    /*
    **  sqlite3_test_control(FAULT_INSTALL, xCallback)
    **
    ** Arrange to invoke xCallback() whenever sqlite3FaultSim() is called,
    ** if xCallback is not NULL.
    **
    ** As a test of the fault simulator mechanism itself, sqlite3FaultSim(0)
    ** is called immediately after installing the new callback and the return
    ** value from sqlite3FaultSim(0) becomes the return from
    ** sqlite3_test_control().
    */
    case SQLITE_TESTCTRL_FAULT_INSTALL: {
      /* MSVC is picky about pulling func ptrs from va lists.
      ** http://support.microsoft.com/kb/47961
      ** sqlite3Config.xTestCallback = va_arg(ap, int(*)(int));
      */
      typedef int(*TESTCALLBACKFUNC_t)(int);
      sqlite3Config.xTestCallback = va_arg(ap, TESTCALLBACKFUNC_t);
      rc = sqlite3FaultSim(0);
      break;
    }

    /*
    **  sqlite3_test_control(BENIGN_MALLOC_HOOKS, xBegin, xEnd)
    **
    ** Register hooks to call to indicate which malloc() failures 
    ** are benign.
    */

**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains the C functions that implement mutexes for win32
*/
#include "sqliteInt.h"








/*
** The code in this file is only used if we are compiling multithreaded
** on a win32 system.
*/
#ifdef SQLITE_MUTEX_W32

/*
** Include the header file for the Windows VFS.
*/
#include "os_win.h"

/*
** Each recursive mutex is an instance of the following structure.
*/
struct sqlite3_mutex {
  CRITICAL_SECTION mutex;    /* Mutex controlling the lock */
  int id;                    /* Mutex type */
#ifdef SQLITE_DEBUG

**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains the C functions that implement mutexes for win32
*/
#include "sqliteInt.h"

#if SQLITE_OS_WIN
/*
** Include the header file for the Windows VFS.
*/
#include "os_win.h"
#endif

/*
** The code in this file is only used if we are compiling multithreaded
** on a win32 system.
*/
#ifdef SQLITE_MUTEX_W32






/*
** Each recursive mutex is an instance of the following structure.
*/
struct sqlite3_mutex {
  CRITICAL_SECTION mutex;    /* Mutex controlling the lock */
  int id;                    /* Mutex type */
#ifdef SQLITE_DEBUG

  /* The above might be initialized to non-zero.  The following need to always
  ** initially be zero, however. */
  int isInit;                       /* True after initialization has finished */
  int inProgress;                   /* True while initialization in progress */
  int isMutexInit;                  /* True after mutexes are initialized */
  int isMallocInit;                 /* True after malloc is initialized */
  int isPCacheInit;                 /* True after malloc is initialized */
  sqlite3_mutex *pInitMutex;        /* Mutex used by sqlite3_initialize() */
  int nRefInitMutex;                /* Number of users of pInitMutex */

  void (*xLog)(void*,int,const char*); /* Function for logging */
  void *pLogArg;                       /* First argument to xLog() */
  int bLocaltimeFault;              /* True to fail localtime() calls */
#ifdef SQLITE_ENABLE_SQLLOG
  void(*xSqllog)(void*,sqlite3*,const char*, int);
  void *pSqllogArg;
#endif
#ifdef SQLITE_VDBE_COVERAGE
  /* The following callback (if not NULL) is invoked on every VDBE branch
  ** operation.  Set the callback using SQLITE_TESTCTRL_VDBE_COVERAGE.
  */
  void (*xVdbeBranch)(void*,int iSrcLine,u8 eThis,u8 eMx);  /* Callback */
  void *pVdbeBranchArg;                                     /* 1st argument */
#endif




};

/*
** This macro is used inside of assert() statements to indicate that
** the assert is only valid on a well-formed database.  Instead of:
**
**     assert( X );
................................................................................
void sqlite3AddDefaultValue(Parse*,ExprSpan*);
void sqlite3AddCollateType(Parse*, Token*);
void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);
int sqlite3ParseUri(const char*,const char*,unsigned int*,
                    sqlite3_vfs**,char**,char **);
Btree *sqlite3DbNameToBtree(sqlite3*,const char*);
int sqlite3CodeOnce(Parse *);







Bitvec *sqlite3BitvecCreate(u32);
int sqlite3BitvecTest(Bitvec*, u32);
int sqlite3BitvecSet(Bitvec*, u32);
void sqlite3BitvecClear(Bitvec*, u32, void*);
void sqlite3BitvecDestroy(Bitvec*);
u32 sqlite3BitvecSize(Bitvec*);

  /* The above might be initialized to non-zero.  The following need to always
  ** initially be zero, however. */
  int isInit;                       /* True after initialization has finished */
  int inProgress;                   /* True while initialization in progress */
  int isMutexInit;                  /* True after mutexes are initialized */
  int isMallocInit;                 /* True after malloc is initialized */
  int isPCacheInit;                 /* True after malloc is initialized */

  int nRefInitMutex;                /* Number of users of pInitMutex */
  sqlite3_mutex *pInitMutex;        /* Mutex used by sqlite3_initialize() */
  void (*xLog)(void*,int,const char*); /* Function for logging */
  void *pLogArg;                       /* First argument to xLog() */

#ifdef SQLITE_ENABLE_SQLLOG
  void(*xSqllog)(void*,sqlite3*,const char*, int);
  void *pSqllogArg;
#endif
#ifdef SQLITE_VDBE_COVERAGE
  /* The following callback (if not NULL) is invoked on every VDBE branch
  ** operation.  Set the callback using SQLITE_TESTCTRL_VDBE_COVERAGE.
  */
  void (*xVdbeBranch)(void*,int iSrcLine,u8 eThis,u8 eMx);  /* Callback */
  void *pVdbeBranchArg;                                     /* 1st argument */
#endif
#ifndef SQLITE_OMIT_BUILTIN_TEST
  int (*xTestCallback)(int);        /* Invoked by sqlite3FaultSim() */
#endif
  int bLocaltimeFault;              /* True to fail localtime() calls */
};

/*
** This macro is used inside of assert() statements to indicate that
** the assert is only valid on a well-formed database.  Instead of:
**
**     assert( X );
................................................................................
void sqlite3AddDefaultValue(Parse*,ExprSpan*);
void sqlite3AddCollateType(Parse*, Token*);
void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);
int sqlite3ParseUri(const char*,const char*,unsigned int*,
                    sqlite3_vfs**,char**,char **);
Btree *sqlite3DbNameToBtree(sqlite3*,const char*);
int sqlite3CodeOnce(Parse *);

#ifdef SQLITE_OMIT_BUILTIN_TEST
# define sqlite3FaultSim(X) SQLITE_OK
#else
  int sqlite3FaultSim(int);
#endif

Bitvec *sqlite3BitvecCreate(u32);
int sqlite3BitvecTest(Bitvec*, u32);
int sqlite3BitvecSet(Bitvec*, u32);
void sqlite3BitvecClear(Bitvec*, u32, void*);
void sqlite3BitvecDestroy(Bitvec*);
u32 sqlite3BitvecSize(Bitvec*);

                     " PENDING-BYTE\"", (void*)0);
    return TCL_ERROR;
  }
  if( Tcl_GetInt(interp, argv[1], &pbyte) ) return TCL_ERROR;
  rc = sqlite3_test_control(SQLITE_TESTCTRL_PENDING_BYTE, pbyte);
  Tcl_SetObjResult(interp, Tcl_NewIntObj(rc));
  return TCL_OK;
}  




















































































/*
** sqlite3BitvecBuiltinTest SIZE PROGRAM
**
** Invoke the SQLITE_TESTCTRL_BITVEC_TEST operator on test_control.
** See comments on sqlite3BitvecBuiltinTest() for additional information.
*/
................................................................................
    { "page_write",              (Tcl_CmdProc*)page_write          },
    { "page_number",             (Tcl_CmdProc*)page_number         },
    { "pager_truncate",          (Tcl_CmdProc*)pager_truncate      },
#ifndef SQLITE_OMIT_DISKIO
    { "fake_big_file",           (Tcl_CmdProc*)fake_big_file       },
#endif
    { "sqlite3BitvecBuiltinTest",(Tcl_CmdProc*)testBitvecBuiltinTest     },
    { "sqlite3_test_control_pending_byte", (Tcl_CmdProc*)testPendingByte },

  };
  int i;
  for(i=0; i<sizeof(aCmd)/sizeof(aCmd[0]); i++){
    Tcl_CreateCommand(interp, aCmd[i].zName, aCmd[i].xProc, 0, 0);
  }
  Tcl_LinkVar(interp, "sqlite_io_error_pending",
     (char*)&sqlite3_io_error_pending, TCL_LINK_INT);

                     " PENDING-BYTE\"", (void*)0);
    return TCL_ERROR;
  }
  if( Tcl_GetInt(interp, argv[1], &pbyte) ) return TCL_ERROR;
  rc = sqlite3_test_control(SQLITE_TESTCTRL_PENDING_BYTE, pbyte);
  Tcl_SetObjResult(interp, Tcl_NewIntObj(rc));
  return TCL_OK;
}

/*
** The sqlite3FaultSim() callback:
*/
static Tcl_Interp *faultSimInterp = 0;
static int faultSimScriptSize = 0;
static char *faultSimScript;
static int faultSimCallback(int x){
  char zInt[30];
  int i;
  int isNeg;
  int rc;
  if( x==0 ){
    memcpy(faultSimScript+faultSimScriptSize, "0", 2);
  }else{
    /* Convert x to text without using any sqlite3 routines */
    if( x<0 ){
      isNeg = 1;
      x = -x;
    }else{
      isNeg = 0;
    }
    zInt[sizeof(zInt)-1] = 0;
    for(i=sizeof(zInt)-2; i>0 && x>0; i--, x /= 10){
      zInt[i] = (x%10) + '0';
    }
    if( isNeg ) zInt[i--] = '-';
    memcpy(faultSimScript+faultSimScriptSize, zInt+i+1, sizeof(zInt)-i);
  }
  rc = Tcl_Eval(faultSimInterp, faultSimScript);
  if( rc ){
    fprintf(stderr, "fault simulator script failed: [%s]", faultSimScript);
    rc = SQLITE_ERROR;
  }else{
    rc = atoi(Tcl_GetStringResult(faultSimInterp));
  }
  Tcl_ResetResult(faultSimInterp);
  return rc;
}

/*
** sqlite3_test_control_fault_install SCRIPT
**
** Arrange to invoke SCRIPT with the integer argument to sqlite3FaultSim()
** appended, whenever sqlite3FaultSim() is called.  Or, if SCRIPT is the
** empty string, cancel the sqlite3FaultSim() callback.
*/
static int faultInstallCmd(
  void *NotUsed,
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int argc,              /* Number of arguments */
  const char **argv      /* Text of each argument */
){
  const char *zScript;
  int nScript;
  int rc;
  if( argc!=1 && argc!=2 ){
    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
                     " SCRIPT\"", (void*)0);
  }
  zScript = argc==2 ? argv[1] : "";
  nScript = (int)strlen(zScript);
  if( faultSimScript ){
    free(faultSimScript);
    faultSimScript = 0;
  }
  if( nScript==0 ){
    rc = sqlite3_test_control(SQLITE_TESTCTRL_FAULT_INSTALL, 0);
  }else{
    faultSimScript = malloc( nScript+100 );
    if( faultSimScript==0 ){
      Tcl_AppendResult(interp, "out of memory", (void*)0);
      return SQLITE_ERROR;
    }
    memcpy(faultSimScript, zScript, nScript);
    faultSimScript[nScript] = ' ';
    faultSimScriptSize = nScript+1;
    faultSimInterp = interp;
    rc = sqlite3_test_control(SQLITE_TESTCTRL_FAULT_INSTALL, faultSimCallback);
  }
  Tcl_SetObjResult(interp, Tcl_NewIntObj(rc));
  return SQLITE_OK;
}

/*
** sqlite3BitvecBuiltinTest SIZE PROGRAM
**
** Invoke the SQLITE_TESTCTRL_BITVEC_TEST operator on test_control.
** See comments on sqlite3BitvecBuiltinTest() for additional information.
*/
................................................................................
    { "page_write",              (Tcl_CmdProc*)page_write          },
    { "page_number",             (Tcl_CmdProc*)page_number         },
    { "pager_truncate",          (Tcl_CmdProc*)pager_truncate      },
#ifndef SQLITE_OMIT_DISKIO
    { "fake_big_file",           (Tcl_CmdProc*)fake_big_file       },
#endif
    { "sqlite3BitvecBuiltinTest",(Tcl_CmdProc*)testBitvecBuiltinTest     },
    { "sqlite3_test_control_pending_byte",  (Tcl_CmdProc*)testPendingByte },
    { "sqlite3_test_control_fault_install", (Tcl_CmdProc*)faultInstallCmd },
  };
  int i;
  for(i=0; i<sizeof(aCmd)/sizeof(aCmd[0]); i++){
    Tcl_CreateCommand(interp, aCmd[i].zName, aCmd[i].xProc, 0, 0);
  }
  Tcl_LinkVar(interp, "sqlite_io_error_pending",
     (char*)&sqlite3_io_error_pending, TCL_LINK_INT);

#ifdef SQLITE_COVERAGE_TEST
void sqlite3Coverage(int x){
  static unsigned dummy = 0;
  dummy += (unsigned)x;
}
#endif



















#ifndef SQLITE_OMIT_FLOATING_POINT
/*
** Return true if the floating point value is Not a Number (NaN).
**
** Use the math library isnan() function if compiled with SQLITE_HAVE_ISNAN.
** Otherwise, we have our own implementation that works on most systems.
*/

#ifdef SQLITE_COVERAGE_TEST
void sqlite3Coverage(int x){
  static unsigned dummy = 0;
  dummy += (unsigned)x;
}
#endif

/*
** Give a callback to the test harness that can be used to simulate faults
** in places where it is difficult or expensive to do so purely by means
** of inputs.
**
** The intent of the integer argument is to let the fault simulator know
** which of multiple sqlite3FaultSim() calls has been hit.
**
** Return whatever integer value the test callback returns, or return
** SQLITE_OK if no test callback is installed.
*/
#ifndef SQLITE_OMIT_BUILTIN_TEST
int sqlite3FaultSim(int iTest){
  int (*xCallback)(int) = sqlite3GlobalConfig.xTestCallback;
  return xCallback ? xCallback(iTest) : SQLITE_OK;
}
#endif

#ifndef SQLITE_OMIT_FLOATING_POINT
/*
** Return true if the floating point value is Not a Number (NaN).
**
** Use the math library isnan() function if compiled with SQLITE_HAVE_ISNAN.
** Otherwise, we have our own implementation that works on most systems.
*/

  }

  proc sql1 sql { code1 [list db eval $sql] }
  proc sql2 sql { code2 [list db eval $sql] }

  code1 { sqlite3 db test.db }
  code2 { sqlite3 db test.db }











  uplevel $script

  catch { code1 { db close } }
  catch { code2 { db close } }
  catch { close $::bc_chan2 }
  catch { close $::bc_chan1 }


}

array set ::incompatible [list]
proc do_allbackcompat_test {script} {

  foreach bin $::BC(binaries) {
    set nErr [set_test_counter errors]
................................................................................
  
        6    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'aa'"
        7    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH '44'"
        8    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'a*'"
      } {
        do_test backcompat-3.7 [list sql1 $q] [sql2 $q]
      }










































    }
  }
}

#-------------------------------------------------------------------------
# Test that Rtree tables may be read/written by different versions of 
# SQLite. 

  }

  proc sql1 sql { code1 [list db eval $sql] }
  proc sql2 sql { code2 [list db eval $sql] }

  code1 { sqlite3 db test.db }
  code2 { sqlite3 db test.db }

  foreach c {code1 code2} {
    $c {
      set v [split [db version] .]
      if {[llength $v]==3} {lappend v 0}
      set ::sqlite_libversion [format \
        "%d%.2d%.2d%2d" [lindex $v 0] [lindex $v 1] [lindex $v 2] [lindex $v 3]
      ]
    }
  }

  uplevel $script

  catch { code1 { db close } }
  catch { code2 { db close } }
  catch { close $::bc_chan2 }
  catch { close $::bc_chan1 }


}

array set ::incompatible [list]
proc do_allbackcompat_test {script} {

  foreach bin $::BC(binaries) {
    set nErr [set_test_counter errors]
................................................................................
  
        6    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'aa'"
        7    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH '44'"
        8    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'a*'"
      } {
        do_test backcompat-3.7 [list sql1 $q] [sql2 $q]
      }

      # Now test that an incremental merge can be started by one version
      # and finished by another. And that the integrity-check still 
      # passes.
      do_test backcompat-3.8 {
        sql1 { 
          DROP TABLE IF EXISTS t1;
          DROP TABLE IF EXISTS t2;
          CREATE TABLE t1(docid, words);
          CREATE VIRTUAL TABLE t2 USING fts3(words);
        }
        code1 [list source $testdir/genesis.tcl]
        code1 { fts_kjv_genesis }
        sql1 {
          INSERT INTO t2 SELECT words FROM t1;
          INSERT INTO t2 SELECT words FROM t1;
          INSERT INTO t2 SELECT words FROM t1;
          INSERT INTO t2 SELECT words FROM t1;
          INSERT INTO t2 SELECT words FROM t1;
          INSERT INTO t2 SELECT words FROM t1;
          SELECT level, group_concat(idx, ' ') FROM t2_segdir GROUP BY level;
        }
      } {0 {0 1 2 3 4 5}}

      if {[code1 { set ::sqlite_libversion }] >=3071200 
       && [code2 { set ::sqlite_libversion }] >=3071200 
      } {
        do_test backcompat-3.9 {
          sql1 { INSERT INTO t2(t2) VALUES('merge=100,4'); }
          sql2 { INSERT INTO t2(t2) VALUES('merge=100,4'); }
          sql1 { INSERT INTO t2(t2) VALUES('merge=100,4'); }
          sql2 { INSERT INTO t2(t2) VALUES('merge=2500,4'); }
          sql2 {
            SELECT level, group_concat(idx, ' ') FROM t2_segdir GROUP BY level;
          }
        } {0 {0 1} 1 0}

        do_test backcompat-3.10 {
          sql1 { INSERT INTO t2(t2) VALUES('integrity-check') }
          sql2 { INSERT INTO t2(t2) VALUES('integrity-check') }
        } {}
      }
    }
  }
}

#-------------------------------------------------------------------------
# Test that Rtree tables may be read/written by different versions of 
# SQLite. 

    SELECT OFFSETS(t1) FROM t1
     WHERE t1 MATCH 'this OR that OR was OR a OR is OR test' ORDER BY docid;
  }
} [list {0 0 0 4 0 4 5 2 0 3 8 1 0 5 10 4} \
        {0 1 0 4 0 2 5 3 0 3 9 1 0 5 11 4} \
        {0 0 0 4 0 4 5 2 0 3 8 1 0 5 10 4}]


check_terms_all fts3d-4.1      {a four is one test that this three two was}
check_doclist_all fts3d-4.1.1  a {[1 0[2]] [2 0[2]] [3 0[2]]}
check_doclist_all fts3d-4.1.2  four {}
check_doclist_all fts3d-4.1.3  is {[1 0[1]] [3 0[1]]}
check_doclist_all fts3d-4.1.4  one {}
check_doclist_all fts3d-4.1.5  test {[1 0[3]] [2 0[3]] [3 0[3]]}
check_doclist_all fts3d-4.1.6  that {[2 0[0]]}
check_doclist_all fts3d-4.1.7  this {[1 0[0]] [3 0[0]]}
check_doclist_all fts3d-4.1.8  three {}
check_doclist_all fts3d-4.1.9  two {}
check_doclist_all fts3d-4.1.10 was {[2 0[1]]}

check_terms fts3d-4.2     0 0 {a four test that was}
check_doclist fts3d-4.2.1 0 0 a {[2 0[2]]}
check_doclist fts3d-4.2.2 0 0 four {[2]}
check_doclist fts3d-4.2.3 0 0 test {[2 0[3]]}
check_doclist fts3d-4.2.4 0 0 that {[2 0[0]]}
................................................................................
check_terms fts3d-4.3     0 1 {a four is test this}
check_doclist fts3d-4.3.1 0 1 a {[3 0[2]]}
check_doclist fts3d-4.3.2 0 1 four {[3]}
check_doclist fts3d-4.3.3 0 1 is {[3 0[1]]}
check_doclist fts3d-4.3.4 0 1 test {[3 0[3]]}
check_doclist fts3d-4.3.5 0 1 this {[3 0[0]]}

check_terms fts3d-4.4      1 0 {a four is one test that this three two was}
check_doclist fts3d-4.4.1  1 0 a {[1 0[2]] [2 0[2]] [3 0[2]]}
check_doclist fts3d-4.4.2  1 0 four {[1] [2 0[4]] [3 0[4]]}
check_doclist fts3d-4.4.3  1 0 is {[1 0[1]] [3 0[1]]}
check_doclist fts3d-4.4.4  1 0 one {[1] [2] [3]}
check_doclist fts3d-4.4.5  1 0 test {[1 0[3]] [2 0[3]] [3 0[3]]}
check_doclist fts3d-4.4.6  1 0 that {[2 0[0]]}
check_doclist fts3d-4.4.7  1 0 this {[1 0[0]] [3 0[0]]}
check_doclist fts3d-4.4.8  1 0 three {[1] [2] [3]}
check_doclist fts3d-4.4.9  1 0 two {[1] [2] [3]}
check_doclist fts3d-4.4.10 1 0 was {[2 0[1]]}

# Optimize should leave the result in the level of the highest-level
# prior segment.
do_test fts3d-4.5 {
  execsql {
    SELECT OPTIMIZE(t1) FROM t1 LIMIT 1;

    SELECT OFFSETS(t1) FROM t1
     WHERE t1 MATCH 'this OR that OR was OR a OR is OR test' ORDER BY docid;
  }
} [list {0 0 0 4 0 4 5 2 0 3 8 1 0 5 10 4} \
        {0 1 0 4 0 2 5 3 0 3 9 1 0 5 11 4} \
        {0 0 0 4 0 4 5 2 0 3 8 1 0 5 10 4}]

puts [db eval {SELECT c FROM t1 } ]
check_terms_all fts3d-4.1      {a four is test that this was}
check_doclist_all fts3d-4.1.1  a {[1 0[2]] [2 0[2]] [3 0[2]]}
check_doclist_all fts3d-4.1.2  four {}
check_doclist_all fts3d-4.1.3  is {[1 0[1]] [3 0[1]]}
#check_doclist_all fts3d-4.1.4  one {}
check_doclist_all fts3d-4.1.5  test {[1 0[3]] [2 0[3]] [3 0[3]]}
check_doclist_all fts3d-4.1.6  that {[2 0[0]]}
check_doclist_all fts3d-4.1.7  this {[1 0[0]] [3 0[0]]}
#check_doclist_all fts3d-4.1.8  three {}
#check_doclist_all fts3d-4.1.9  two {}
check_doclist_all fts3d-4.1.10 was {[2 0[1]]}

check_terms fts3d-4.2     0 0 {a four test that was}
check_doclist fts3d-4.2.1 0 0 a {[2 0[2]]}
check_doclist fts3d-4.2.2 0 0 four {[2]}
check_doclist fts3d-4.2.3 0 0 test {[2 0[3]]}
check_doclist fts3d-4.2.4 0 0 that {[2 0[0]]}
................................................................................
check_terms fts3d-4.3     0 1 {a four is test this}
check_doclist fts3d-4.3.1 0 1 a {[3 0[2]]}
check_doclist fts3d-4.3.2 0 1 four {[3]}
check_doclist fts3d-4.3.3 0 1 is {[3 0[1]]}
check_doclist fts3d-4.3.4 0 1 test {[3 0[3]]}
check_doclist fts3d-4.3.5 0 1 this {[3 0[0]]}

check_terms fts3d-4.4      1 0 {a four is test that this was}
check_doclist fts3d-4.4.1  1 0 a {[1 0[2]] [2 0[2]] [3 0[2]]}
check_doclist fts3d-4.4.2  1 0 four {[2 0[4]] [3 0[4]]}
check_doclist fts3d-4.4.3  1 0 is {[1 0[1]] [3 0[1]]}
#check_doclist fts3d-4.4.4  1 0 one {[1] [2] [3]}
check_doclist fts3d-4.4.5  1 0 test {[1 0[3]] [2 0[3]] [3 0[3]]}
check_doclist fts3d-4.4.6  1 0 that {[2 0[0]]}
check_doclist fts3d-4.4.7  1 0 this {[1 0[0]] [3 0[0]]}
#check_doclist fts3d-4.4.8  1 0 three {[1] [2] [3]}
#check_doclist fts3d-4.4.9  1 0 two {[1] [2] [3]}
check_doclist fts3d-4.4.10 1 0 was {[2 0[1]]}

# Optimize should leave the result in the level of the highest-level
# prior segment.
do_test fts3d-4.5 {
  execsql {
    SELECT OPTIMIZE(t1) FROM t1 LIMIT 1;

# 2014 May 12
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#*************************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is testing the FTS4 module.
#
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix fts4growth

# If SQLITE_ENABLE_FTS3 is defined, omit this file.
ifcapable !fts3 {
  finish_test
  return
}

source $testdir/genesis.tcl

do_execsql_test 1.1 { CREATE VIRTUAL TABLE x1 USING fts3; }

do_test 1.2 {
  foreach L {
    {"See here, young man," said Mulga Bill, "from Walgett to the sea,}
    {From Conroy's Gap to Castlereagh, there's none can ride like me.}
    {I'm good all round at everything as everybody knows,}
    {Although I'm not the one to talk -- I hate a man that blows.}
  } {
    execsql { INSERT INTO x1 VALUES($L) }
  }
  execsql { SELECT end_block, length(root) FROM x1_segdir }
} {{0 114} 114 {0 118} 118 {0 95} 95 {0 115} 115}

do_execsql_test 1.3 {
  INSERT INTO x1(x1) VALUES('optimize');
  SELECT level, end_block, length(root) FROM x1_segdir;
} {0 {0 394} 394}

do_test 1.4 {
  foreach L {
    {But riding is my special gift, my chiefest, sole delight;}
    {Just ask a wild duck can it swim, a wildcat can it fight.}
    {There's nothing clothed in hair or hide, or built of flesh or steel,}
    {There's nothing walks or jumps, or runs, on axle, hoof, or wheel,}
    {But what I'll sit, while hide will hold and girths and straps are tight:}
    {I'll ride this here two-wheeled concern right straight away at sight."}
  } {
    execsql { INSERT INTO x1 VALUES($L) }
  }
  execsql { 
    INSERT INTO x1(x1) VALUES('merge=4,4');
    SELECT level, end_block, length(root) FROM x1_segdir;
  }
} {0 {0 110} 110 0 {0 132} 132 0 {0 129} 129 1 {128 658} 2}

do_execsql_test 1.5 {
  SELECT length(block) FROM x1_segments;
} {658 {}}

do_test 1.6 {
  foreach L {
    {'Twas Mulga Bill, from Eaglehawk, that sought his own abode,}
    {That perched above Dead Man's Creek, beside the mountain road.}
    {He turned the cycle down the hill and mounted for the fray,}
    {But 'ere he'd gone a dozen yards it bolted clean away.}
    {It left the track, and through the trees, just like a silver steak,}
    {It whistled down the awful slope towards the Dead Man's Creek.}
    {It shaved a stump by half an inch, it dodged a big white-box:}
    {The very wallaroos in fright went scrambling up the rocks,}
    {The wombats hiding in their caves dug deeper underground,}
    {As Mulga Bill, as white as chalk, sat tight to every bound.}
    {It struck a stone and gave a spring that cleared a fallen tree,}
    {It raced beside a precipice as close as close could be;}
    {And then as Mulga Bill let out one last despairing shriek}
    {It made a leap of twenty feet into the Dead Man's Creek.}
  } {
    execsql { INSERT INTO x1 VALUES($L) }
  }
  execsql { 
    SELECT level, end_block, length(root) FROM x1_segdir;
  }
} {1 {128 658} 2 1 {130 1377} 6 0 {0 117} 117}

do_execsql_test 1.7 {
  SELECT sum(length(block)) FROM x1_segments WHERE blockid IN (129, 130);
} {1377}

#-------------------------------------------------------------------------
#
do_execsql_test 2.1 { 
  CREATE TABLE t1(docid, words);
  CREATE VIRTUAL TABLE x2 USING fts4;
}
fts_kjv_genesis 
do_test 2.2 {
  foreach id [db eval {SELECT docid FROM t1}] {
    execsql {
      INSERT INTO x2(docid, content) SELECT $id, words FROM t1 WHERE docid=$id
    }
  }
  foreach id [db eval {SELECT docid FROM t1}] {
    execsql {
      INSERT INTO x2(docid, content) SELECT NULL, words FROM t1 WHERE docid=$id
    }
    if {[db one {SELECT count(*) FROM x2_segdir WHERE level<2}]==2} break
  }
} {}

do_execsql_test 2.3 { 
  SELECT count(*) FROM x2_segdir WHERE level=2;
  SELECT count(*) FROM x2_segdir WHERE level=3;
} {6 0}

do_execsql_test 2.4 { 
  INSERT INTO x2(x2) VALUES('merge=4,4');
  SELECT count(*) FROM x2_segdir WHERE level=2;
  SELECT count(*) FROM x2_segdir WHERE level=3;
} {6 1}

do_execsql_test 2.5 { 
  SELECT end_block FROM x2_segdir WHERE level=3;
  INSERT INTO x2(x2) VALUES('merge=4,4');
  SELECT end_block FROM x2_segdir WHERE level=3;
  INSERT INTO x2(x2) VALUES('merge=4,4');
  SELECT end_block FROM x2_segdir WHERE level=3;
} {{3828 -3430} {3828 -10191} {3828 -14109}}

do_execsql_test 2.6 {
  SELECT sum(length(block)) FROM x2_segdir, x2_segments WHERE 
    blockid BETWEEN start_block AND leaves_end_block
    AND level=3
} {14109}

do_execsql_test 2.7 { 
  INSERT INTO x2(x2) VALUES('merge=1000,4');
  SELECT end_block FROM x2_segdir WHERE level=3;
} {{3828 86120}}

do_execsql_test 2.8 {
  SELECT sum(length(block)) FROM x2_segdir, x2_segments WHERE 
    blockid BETWEEN start_block AND leaves_end_block
    AND level=3
} {86120}

#--------------------------------------------------------------------------
# Test that delete markers are removed from FTS segments when possible.
# It is only possible to remove delete markers when the output of the
# merge operation will become the oldest segment in the index.
#
#   3.1 - when the oldest segment is created by an 'optimize'.
#   3.2 - when the oldest segment is created by an incremental merge.
#   3.3 - by a crisis merge.
#

proc insert_doc {args} {
  foreach iDoc $args {
    set L [lindex {
      {In your eagerness to engage the Trojans,}
      {don’t any of you charge ahead of others,}
      {trusting in your strength and horsemanship.}
      {And don’t lag behind. That will hurt our charge.}
      {Any man whose chariot confronts an enemy’s}
      {should thrust with his spear at him from there.}
      {That’s the most effective tactic, the way}
      {men wiped out city strongholds long ago —}
      {their chests full of that style and spirit.}
    } [expr $iDoc%9]]
    execsql { REPLACE INTO x3(docid, content) VALUES($iDoc, $L) }
  }
}

proc delete_doc {args} {
  foreach iDoc $args {
    execsql { DELETE FROM x3 WHERE docid = $iDoc }
  }
}

proc second {x} { lindex $x 1 }
db func second second

do_execsql_test 3.0 { CREATE VIRTUAL TABLE x3 USING fts4 }

do_test 3.1.1 {
  db transaction { insert_doc 1 2 3 4 5 6 }
  execsql { SELECT level, idx, second(end_block) FROM x3_segdir }
} {0 0 412}
do_test 3.1.2 {
  delete_doc 1 2 3 4 5 6
  execsql { SELECT count(*) FROM x3_segdir }
} {0}
do_test 3.1.3 {
  db transaction { 
    insert_doc 1 2 3 4 5 6 7 8 9
    delete_doc 9 8 7
  }
  execsql { SELECT level, idx, second(end_block) FROM x3_segdir }
} {0 0 591 0 1 65 0 2 72 0 3 76}
do_test 3.1.4 {
  execsql { INSERT INTO x3(x3) VALUES('optimize') }
  execsql { SELECT level, idx, second(end_block) FROM x3_segdir }
} {0 0 412}

do_test 3.2.1 {
  execsql { DELETE FROM x3 }
  insert_doc 8 7 6 5 4 3 2 1
  delete_doc 7 8
  execsql { SELECT count(*) FROM x3_segdir }
} {10}
do_test 3.2.2 {
  execsql { INSERT INTO x3(x3) VALUES('merge=500,10') }
  execsql { SELECT level, idx, second(end_block) FROM x3_segdir }
} {1 0 412}

# This assumes the crisis merge happens when there are already 16 
# segments and one more is added.
#
do_test 3.3.1 {
  execsql { DELETE FROM x3 }
  insert_doc 1 2 3 4 5 6  7 8 9 10 11
  delete_doc 11 10 9 8 7
  execsql { SELECT count(*) FROM x3_segdir }
} {16}

do_test 3.3.2 {
  insert_doc 12
  execsql { SELECT level, idx, second(end_block) FROM x3_segdir WHERE level=1 }
} {1 0 412}

#--------------------------------------------------------------------------
# Check a theory on a bug in fts4 - that segments with idx==0 were not 
# being incrementally merged correctly. Theory turned out to be false.
#
do_execsql_test 4.1 {
  DROP TABLE IF EXISTS x4;
  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(docid, words);
  CREATE VIRTUAL TABLE x4 USING fts4(words);
}
do_test 4.2 {
  fts_kjv_genesis 
  execsql { INSERT INTO x4 SELECT words FROM t1 }
  execsql { INSERT INTO x4 SELECT words FROM t1 }
} {}

do_execsql_test 4.3 {
  SELECT level, idx, second(end_block) FROM x4_segdir 
} {0 0 117483 0 1 118006}

do_execsql_test 4.4 {
  INSERT INTO x4(x4) VALUES('merge=10,2');
  SELECT count(*) FROM x4_segdir;
} {3}

do_execsql_test 4.5 {
  INSERT INTO x4(x4) VALUES('merge=10,2');
  SELECT count(*) FROM x4_segdir;
} {3}

do_execsql_test 4.6 {
  INSERT INTO x4(x4) VALUES('merge=1000,2');
  SELECT count(*) FROM x4_segdir;
} {1}



#--------------------------------------------------------------------------
# Check that segments are not promoted if the "end_block" field does not
# contain a size.
#
do_execsql_test 5.1 {
  DROP TABLE IF EXISTS x2;
  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(docid, words);
  CREATE VIRTUAL TABLE x2 USING fts4;
}
fts_kjv_genesis 

proc first {L} {lindex $L 0}
db func first first

do_test 5.2 {
  foreach r [db eval { SELECT rowid FROM t1 }] {
    execsql {
      INSERT INTO x2(docid, content) SELECT docid, words FROM t1 WHERE rowid=$r
    }
  }
  foreach d [db eval { SELECT docid FROM t1 LIMIT -1 OFFSET 20 }] {
    execsql { DELETE FROM x2 WHERE docid = $d }
  }

  execsql {
    INSERT INTO x2(x2) VALUES('optimize');
    SELECT level, idx, end_block FROM x2_segdir
  }
} {2 0 {752 1926}}

do_execsql_test 5.3 {
  UPDATE x2_segdir SET end_block = CAST( first(end_block) AS INTEGER );
  SELECT end_block, typeof(end_block) FROM x2_segdir;
} {752 integer}

do_execsql_test 5.4 {
  INSERT INTO x2 SELECT words FROM t1 LIMIT 50;
  SELECT level, idx, end_block FROM x2_segdir
} {2 0 752 0 0 {758 5174}}

do_execsql_test 5.5 {
  UPDATE x2_segdir SET end_block = end_block || ' 1926' WHERE level=2;
  INSERT INTO x2 SELECT words FROM t1 LIMIT 40;
  SELECT level, idx, end_block FROM x2_segdir
} {0 0 {752 1926} 0 1 {758 5174} 0 2 {763 4170}}

proc t1_to_x2 {} {
  foreach id [db eval {SELECT docid FROM t1 LIMIT 2}] {
    execsql {
      DELETE FROM x2 WHERE docid=$id;
      INSERT INTO x2(docid, content) SELECT $id, words FROM t1 WHERE docid=$id;
    }
  }
}

#--------------------------------------------------------------------------
# Check that segments created by auto-merge are not promoted until they
# are completed.
#

do_execsql_test 6.1 {
  CREATE VIRTUAL TABLE x5 USING fts4;
  INSERT INTO x5 SELECT words FROM t1 LIMIT 100 OFFSET 0;
  INSERT INTO x5 SELECT words FROM t1 LIMIT 100 OFFSET 25;
  INSERT INTO x5 SELECT words FROM t1 LIMIT 100 OFFSET 50;
  INSERT INTO x5 SELECT words FROM t1 LIMIT 100 OFFSET 75;
  SELECT count(*) FROM x5_segdir
} {4}

do_execsql_test 6.2 {
  INSERT INTO x5(x5) VALUES('merge=2,4');
  SELECT level, idx, end_block FROM x5_segdir;
} {0 0 {10 9216} 0 1 {21 9330} 0 2 {31 8850} 0 3 {40 8689} 1 0 {1320 -3117}}

do_execsql_test 6.3 {
  INSERT INTO x5 SELECT words FROM t1 LIMIT 100 OFFSET 100;
  SELECT level, idx, end_block FROM x5_segdir;
} {
  0 0 {10 9216} 0 1 {21 9330} 0 2 {31 8850} 
  0 3 {40 8689} 1 0 {1320 -3117} 0 4 {1329 8297}
}

do_execsql_test 6.4 {
  INSERT INTO x5(x5) VALUES('merge=200,4');
  SELECT level, idx, end_block FROM x5_segdir;
} {0 0 {1329 8297} 1 0 {1320 28009}}

do_execsql_test 6.5 {
  INSERT INTO x5 SELECT words FROM t1;
  SELECT level, idx, end_block FROM x5_segdir;
} {
  0 1 {1329 8297} 0 0 {1320 28009} 0 2 {1449 118006}
}

#--------------------------------------------------------------------------
# Ensure that if part of an incremental merge is performed by an old
# version that does not support storing segment sizes in the end_block
# field, no size is stored in the final segment (as it would be incorrect).
#
do_execsql_test 7.1 {
  CREATE VIRTUAL TABLE x6 USING fts4;
  INSERT INTO x6 SELECT words FROM t1;
  INSERT INTO x6 SELECT words FROM t1;
  INSERT INTO x6 SELECT words FROM t1;
  INSERT INTO x6 SELECT words FROM t1;
  INSERT INTO x6 SELECT words FROM t1;
  INSERT INTO x6 SELECT words FROM t1;
  SELECT level, idx, end_block FROM x6_segdir;
} {
  0 0 {118 117483} 0 1 {238 118006} 0 2 {358 118006} 
  0 3 {478 118006} 0 4 {598 118006} 0 5 {718 118006}
}

do_execsql_test 7.2 {
  INSERT INTO x6(x6) VALUES('merge=25,4');
  SELECT level, idx, end_block FROM x6_segdir;
} {
  0 0 {118 117483} 0 1 {238 118006} 0 2 {358 118006} 
  0 3 {478 118006} 0 4 {598 118006} 0 5 {718 118006}
  1 0 {16014 -51226}
}

do_execsql_test 7.3 {
  UPDATE x6_segdir SET end_block = first(end_block) WHERE level=1;
  SELECT level, idx, end_block FROM x6_segdir;
} {
  0 0 {118 117483} 0 1 {238 118006} 0 2 {358 118006} 
  0 3 {478 118006} 0 4 {598 118006} 0 5 {718 118006}
  1 0 16014
}

do_execsql_test 7.4 {
  INSERT INTO x6(x6) VALUES('merge=25,4');
  SELECT level, idx, end_block FROM x6_segdir;
} {
  0 0 {118 117483} 0 1 {238 118006} 0 2 {358 118006} 
  0 3 {478 118006} 0 4 {598 118006} 0 5 {718 118006}
  1 0 16014
}

do_execsql_test 7.5 {
  INSERT INTO x6(x6) VALUES('merge=2500,4');
  SELECT level, idx, end_block FROM x6_segdir;
} {
  0 0 {598 118006} 0 1 {718 118006} 1 0 16014
}

do_execsql_test 7.6 {
  INSERT INTO x6(x6) VALUES('merge=2500,2');
  SELECT level, idx, start_block, leaves_end_block, end_block FROM x6_segdir;
} {
  2 0 23695 24147 {41262 633507}
}

do_execsql_test 7.7 {
  SELECT sum(length(block)) FROM x6_segments 
  WHERE blockid BETWEEN 23695 AND 24147
} {633507}



finish_test

# 2014 May 12
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#*************************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is testing the FTS4 module.
#
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix fts4growth2

# If SQLITE_ENABLE_FTS3 is defined, omit this file.
ifcapable !fts3 {
  finish_test
  return
}

source $testdir/genesis.tcl

do_execsql_test 1.0 { CREATE TABLE t1(docid, words); }
fts_kjv_genesis 

proc structure {} {
  puts [ db eval {SELECT level, count(*) FROM x1_segdir GROUP BY level} ]
}

proc tt {val} {
  execsql {
    DELETE FROM x1 
      WHERE docid IN (SELECT docid FROM t1 WHERE (rowid-1)%4==$val+0);
  }
  execsql {
    INSERT INTO x1(docid, content) 
      SELECT docid, words FROM t1 WHERE (rowid%4)==$val+0;
  }
}

do_execsql_test 1.1 {
  CREATE VIRTUAL TABLE x1 USING fts4;
  INSERT INTO x1(x1) VALUES('automerge=2');
}

do_test 1.2 {
  for {set i 0} {$i < 40} {incr i} {
    tt 0 ; tt 1 ; tt 2 ; tt 3
  }
  execsql { 
    SELECT max(level) FROM x1_segdir; 
    SELECT count(*) FROM x1_segdir WHERE level=2;
  }
} {2 1}

do_test 1.3 {
  for {set i 0} {$i < 40} {incr i} {
    tt 0 ; tt 1 ; tt 2 ; tt 3
  }
  execsql { 
    SELECT max(level) FROM x1_segdir; 
    SELECT count(*) FROM x1_segdir WHERE level=2;
  }
} {2 1}

#-------------------------------------------------------------------------
#
do_execsql_test 2.1 {
  DELETE FROM t1 WHERE rowid>16;
  DROP TABLE IF EXISTS x1;
  CREATE VIRTUAL TABLE x1 USING fts4;
}

db func second second
proc second {L} {lindex $L 1}

for {set tn 0} {$tn < 40} {incr tn} {
  do_test 2.2.$tn {
    for {set i 0} {$i < 100} {incr i} {
      tt 0 ; tt 1 ; tt 2 ; tt 3
    }
    execsql { SELECT max(level) FROM x1_segdir }
  } {1}
}


finish_test

    execsql {INSERT INTO t1 VALUES('a b c d e f g h i j k l');}
  }
} {}
do_execsql_test 2.2 { SELECT count(*) FROM t1_segdir; } 35
do_execsql_test 2.3 { INSERT INTO t1(t1) VALUES('optimize') } {}
do_execsql_test 2.4 { SELECT count(*) FROM t1_segdir; } 1














































sqlite3_enable_shared_cache $::enable_shared_cache
finish_test

    execsql {INSERT INTO t1 VALUES('a b c d e f g h i j k l');}
  }
} {}
do_execsql_test 2.2 { SELECT count(*) FROM t1_segdir; } 35
do_execsql_test 2.3 { INSERT INTO t1(t1) VALUES('optimize') } {}
do_execsql_test 2.4 { SELECT count(*) FROM t1_segdir; } 1

#-------------------------------------------------------------------------
# Now test that the automerge=? option appears to work.
#
do_execsql_test 2.1 { CREATE VIRTUAL TABLE t2 USING fts4; }

set doc ""
foreach c1 "a b c d e f g h i j" {
  foreach c2 "a b c d e f g h i j" {
    foreach c3 "a b c d e f g h i j" {
      lappend doc "$c1$c2$c3"
    }
  }
}
set doc [string repeat $doc 10]

foreach {tn am expected} {
  1 {automerge=2} {1 1   2 1   4 1   6 1}
  2 {automerge=4} {1 2   2 1   3 1}
  3 {automerge=8} {0 4   1 3   2 1}
  4 {automerge=1} {0 4   1 3   2 1}
} {
  foreach {tn2 openclose} {1 {} 2 { db close ; sqlite3 db test.db }} {
    do_test 2.2.$tn.$tn2 {
      execsql { DELETE FROM t2 }
      execsql { INSERT INTO t2(t2) VALUES($am) };

      eval $openclose
  
      for {set i 0} {$i < 100} {incr i} {
        execsql { 
          BEGIN;
            INSERT INTO t2 VALUES($doc);
            INSERT INTO t2 VALUES($doc);
            INSERT INTO t2 VALUES($doc);
            INSERT INTO t2 VALUES($doc);
            INSERT INTO t2 VALUES($doc);
          COMMIT;
        }
      }
  
      execsql { SELECT level, count(*) FROM t2_segdir GROUP BY level }
    } [list {*}$expected]
  }
}

sqlite3_enable_shared_cache $::enable_shared_cache
finish_test

  SELECT * FROM t19;
} {1 2 3}
do_execsql_test misc1-19.2 {
  CREATE TABLE t19b AS SELECT 4 AS '', 5 AS '',  6 AS '';
  SELECT * FROM t19b;
} {4 5 6}


















finish_test

  SELECT * FROM t19;
} {1 2 3}
do_execsql_test misc1-19.2 {
  CREATE TABLE t19b AS SELECT 4 AS '', 5 AS '',  6 AS '';
  SELECT * FROM t19b;
} {4 5 6}

# 2014-05-16:  Tests for the SQLITE_TESTCTRL_FAULT_INSTALL feature.
#
unset -nocomplain fault_callbacks
set fault_callbacks {}
proc fault_callback {n} {
  lappend ::fault_callbacks $n
  return 0
}
do_test misc1-19.1 {
  sqlite3_test_control_fault_install fault_callback
  set fault_callbacks
} {0}
do_test misc1-19.2 {
  sqlite3_test_control_fault_install
  set fault_callbacks
} {0}

finish_test

  savepoint4.test savepoint6.test select9.test 
  speed1.test speed1p.test speed2.test speed3.test speed4.test 
  speed4p.test sqllimits1.test tkt2686.test thread001.test thread002.test
  thread003.test thread004.test thread005.test trans2.test vacuum3.test 
  incrvacuum_ioerr.test autovacuum_crash.test btree8.test shared_err.test
  vtab_err.test walslow.test walcrash.test walcrash3.test
  walthread.test rtree3.test indexfault.test securedel2.test

}]
if {[info exists ::env(QUICKTEST_INCLUDE)]} {
  set allquicktests [concat $allquicktests $::env(QUICKTEST_INCLUDE)]
}

#############################################################################
# Start of tests
................................................................................
  fts3fault.test fts3malloc.test fts3matchinfo.test
  fts3aux1.test fts3comp1.test fts3auto.test
  fts4aa.test fts4content.test
  fts3conf.test fts3prefix.test fts3fault2.test fts3corrupt.test
  fts3corrupt2.test fts3first.test fts4langid.test fts4merge.test
  fts4check.test fts4unicode.test fts4noti.test
  fts3varint.test

}

test_suite "nofaultsim" -prefix "" -description {
  "Very" quick test suite. Runs in less than 5 minutes on a workstation. 
  This test suite is the same as the "quick" tests, except that some files
  that test malloc and IO errors are omitted.
} -files [

  savepoint4.test savepoint6.test select9.test 
  speed1.test speed1p.test speed2.test speed3.test speed4.test 
  speed4p.test sqllimits1.test tkt2686.test thread001.test thread002.test
  thread003.test thread004.test thread005.test trans2.test vacuum3.test 
  incrvacuum_ioerr.test autovacuum_crash.test btree8.test shared_err.test
  vtab_err.test walslow.test walcrash.test walcrash3.test
  walthread.test rtree3.test indexfault.test securedel2.test
  fts4growth.test fts4growth2.test
}]
if {[info exists ::env(QUICKTEST_INCLUDE)]} {
  set allquicktests [concat $allquicktests $::env(QUICKTEST_INCLUDE)]
}

#############################################################################
# Start of tests
................................................................................
  fts3fault.test fts3malloc.test fts3matchinfo.test
  fts3aux1.test fts3comp1.test fts3auto.test
  fts4aa.test fts4content.test
  fts3conf.test fts3prefix.test fts3fault2.test fts3corrupt.test
  fts3corrupt2.test fts3first.test fts4langid.test fts4merge.test
  fts4check.test fts4unicode.test fts4noti.test
  fts3varint.test
  fts4growth.test fts4growth2.test
}

test_suite "nofaultsim" -prefix "" -description {
  "Very" quick test suite. Runs in less than 5 minutes on a workstation. 
  This test suite is the same as the "quick" tests, except that some files
  that test malloc and IO errors are omitted.
} -files [

    "-- INSERT INTO 'main'.'x1_content' VALUES(?,(?))" 
    "-- REPLACE INTO 'main'.'x1_docsize' VALUES(?,?)" 
    "-- SELECT value FROM 'main'.'x1_stat' WHERE id=?" 
    "-- REPLACE INTO 'main'.'x1_stat' VALUES(?,?)" 
    "-- SELECT (SELECT max(idx) FROM 'main'.'x1_segdir' WHERE level = ?) + 1" 
    "-- SELECT coalesce((SELECT max(blockid) FROM 'main'.'x1_segments') + 1, 1)"
    "-- REPLACE INTO 'main'.'x1_segdir' VALUES(?,?,?,?,?,?)"

  }

  do_trace_test 2.3 {
    INSERT INTO x1(x1) VALUES('optimize');
  } {
    "INSERT INTO x1(x1) VALUES('optimize');"
    "-- SELECT DISTINCT level / (1024 * ?) FROM 'main'.'x1_segdir'"

    "-- INSERT INTO 'main'.'x1_content' VALUES(?,(?))" 
    "-- REPLACE INTO 'main'.'x1_docsize' VALUES(?,?)" 
    "-- SELECT value FROM 'main'.'x1_stat' WHERE id=?" 
    "-- REPLACE INTO 'main'.'x1_stat' VALUES(?,?)" 
    "-- SELECT (SELECT max(idx) FROM 'main'.'x1_segdir' WHERE level = ?) + 1" 
    "-- SELECT coalesce((SELECT max(blockid) FROM 'main'.'x1_segments') + 1, 1)"
    "-- REPLACE INTO 'main'.'x1_segdir' VALUES(?,?,?,?,?,?)"
    "-- SELECT level, idx, end_block FROM 'main'.'x1_segdir' WHERE level BETWEEN ? AND ? ORDER BY level DESC, idx ASC"
  }

  do_trace_test 2.3 {
    INSERT INTO x1(x1) VALUES('optimize');
  } {
    "INSERT INTO x1(x1) VALUES('optimize');"
    "-- SELECT DISTINCT level / (1024 * ?) FROM 'main'.'x1_segdir'"

# The first argument to this script is required and must be the name of the
# top-level directory containing the directories and files organized into a
# tree as described in item 6 of the PREREQUISITES section, above.  The second
# argument is optional and if present must contain the name of the directory
# containing the root of the source tree for SQLite.  The third argument is
# optional and if present must contain the flavor the VSIX package to build.
# Currently, the only supported package flavors are "WinRT", "WinRT81", "WP80",
# and "Win32".  The fourth argument is optional and if present must be a string
# containing a list of platforms to include in the VSIX package.  The platform
# list is "platform1,platform2,platform3".  The fifth argument is optional and
# if present must contain the version of Visual Studio required by the package.
# Currently, the only supported versions are "2012" and "2013".  The package
# flavor "WinRT81" is only supported when the Visual Studio version is "2013".
# Typically, when on Windows, this script is executed using commands similar to
# the following from a normal Windows command prompt:

#
#                         CD /D C:\dev\sqlite\core
#                         tclsh85 tool\mkvsix.tcl C:\Temp
#
# In the example above, "C:\dev\sqlite\core" represents the root of the source
# tree for SQLite and "C:\Temp" represents the top-level directory containing
# the executable and other compiled binary files, organized into a directory
................................................................................
          "\r\n    " {MinVSVersion="12.0"}]
    }
    default {
      return ""
    }
  }
}
 































proc getExtraFileListXmlChunk { packageFlavor vsVersion } {
  #
  # NOTE: Windows Phone 8.0 does not require any extra attributes in its VSIX
  #       package SDK manifests.

  #
  if {[string equal $packageFlavor WP80]} then {
    return ""
  }

  set appliesTo [expr {[string equal $packageFlavor Win32] ? \
      "VisualC" : "WindowsAppContainer"}]
................................................................................
  set vsVersion 2012
}

if {[string length $vsVersion] == 0} then {
  fail "invalid Visual Studio version"
}

if {$vsVersion ne "2012" && $vsVersion ne "2013"} then {
  fail [appendArgs \
      "unsupported Visual Studio version, must be one of: " \
      [list 2012 2013]]
}

set shortNames(WinRT,2012) SQLite.WinRT
set shortNames(WinRT,2013) SQLite.WinRT.2013
set shortNames(WinRT81,2013) SQLite.WinRT81
set shortNames(WP80,2012) SQLite.WP80
set shortNames(WP80,2013) SQLite.WP80.2013

set shortNames(Win32,2012) SQLite.Win32
set shortNames(Win32,2013) SQLite.Win32.2013

set displayNames(WinRT,2012) "SQLite for Windows Runtime"
set displayNames(WinRT,2013) "SQLite for Windows Runtime"
set displayNames(WinRT81,2013) "SQLite for Windows Runtime (Windows 8.1)"
set displayNames(WP80,2012) "SQLite for Windows Phone"
set displayNames(WP80,2013) "SQLite for Windows Phone"

set displayNames(Win32,2012) "SQLite for Windows"
set displayNames(Win32,2013) "SQLite for Windows"

if {[string equal $packageFlavor WinRT]} then {
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier Windows
  set targetPlatformVersion v8.0
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]


  set extraSdkPath ""
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} elseif {[string equal $packageFlavor WinRT81]} then {
  if {$vsVersion ne "2013"} then {
    fail [appendArgs \
        "unsupported combination, package flavor " $packageFlavor \
................................................................................
        " is only supported with Visual Studio 2013"]
  }
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier Windows
  set targetPlatformVersion v8.1
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]


  set extraSdkPath ""
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} elseif {[string equal $packageFlavor WP80]} then {
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier "Windows Phone"
  set targetPlatformVersion v8.0
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]


















  set extraSdkPath "\\..\\$targetPlatformIdentifier"
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} elseif {[string equal $packageFlavor Win32]} then {
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier Windows
  set targetPlatformVersion v8.0
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]


  set extraSdkPath ""
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} else {
  fail [appendArgs \
      "unsupported package flavor, must be one of: " \
      [list WinRT WinRT81 WP80 Win32]]
}

###############################################################################

#
# NOTE: Evaluate the user-specific customizations file, if it exists.
#

# The first argument to this script is required and must be the name of the
# top-level directory containing the directories and files organized into a
# tree as described in item 6 of the PREREQUISITES section, above.  The second
# argument is optional and if present must contain the name of the directory
# containing the root of the source tree for SQLite.  The third argument is
# optional and if present must contain the flavor the VSIX package to build.
# Currently, the only supported package flavors are "WinRT", "WinRT81", "WP80",
# "WP81", and "Win32".  The fourth argument is optional and if present must be
# a string containing a list of platforms to include in the VSIX package.  The
# platform list is "platform1,platform2,platform3".  The fifth argument is
# optional and if present must contain the version of Visual Studio required by
# the package.  Currently, the only supported versions are "2012" and "2013".
# The package flavors "WinRT81" and "WP81" are only supported when the Visual
# Studio version is "2013".  Typically, when on Windows, this script is
# executed using commands similar to the following from a normal Windows
# command prompt:
#
#                         CD /D C:\dev\sqlite\core
#                         tclsh85 tool\mkvsix.tcl C:\Temp
#
# In the example above, "C:\dev\sqlite\core" represents the root of the source
# tree for SQLite and "C:\Temp" represents the top-level directory containing
# the executable and other compiled binary files, organized into a directory
................................................................................
          "\r\n    " {MinVSVersion="12.0"}]
    }
    default {
      return ""
    }
  }
}
 
proc getMaxPlatformVersionXmlChunk { packageFlavor vsVersion } {
  #
  # NOTE: Only Visual Studio 2013 supports this SDK manifest attribute.
  #
  if {![string equal $vsVersion 2013]} then {
    return ""
  }

  switch -exact $packageFlavor {
    WinRT {
      return [appendArgs \
          "\r\n    " {MaxPlatformVersion="8.0"}]
    }
    WinRT81 {
      return [appendArgs \
          "\r\n    " {MaxPlatformVersion="8.1"}]
    }
    WP80 {
      return [appendArgs \
          "\r\n    " {MaxPlatformVersion="8.0"}]
    }
    WP81 {
      return [appendArgs \
          "\r\n    " {MaxPlatformVersion="8.1"}]
    }
    default {
      return ""
    }
  }
}
 
proc getExtraFileListXmlChunk { packageFlavor vsVersion } {
  #
  # NOTE: Windows Phone 8.0 does not require any extra attributes in its VSIX
  #       package SDK manifests; however, it appears that Windows Phone 8.1
  #       does.
  #
  if {[string equal $packageFlavor WP80]} then {
    return ""
  }

  set appliesTo [expr {[string equal $packageFlavor Win32] ? \
      "VisualC" : "WindowsAppContainer"}]
................................................................................
  set vsVersion 2012
}

if {[string length $vsVersion] == 0} then {
  fail "invalid Visual Studio version"
}

if {![string equal $vsVersion 2012] && ![string equal $vsVersion 2013]} then {
  fail [appendArgs \
      "unsupported Visual Studio version, must be one of: " \
      [list 2012 2013]]
}

set shortNames(WinRT,2012) SQLite.WinRT
set shortNames(WinRT,2013) SQLite.WinRT.2013
set shortNames(WinRT81,2013) SQLite.WinRT81
set shortNames(WP80,2012) SQLite.WP80
set shortNames(WP80,2013) SQLite.WP80.2013
set shortNames(WP81,2013) SQLite.WP81
set shortNames(Win32,2012) SQLite.Win32
set shortNames(Win32,2013) SQLite.Win32.2013

set displayNames(WinRT,2012) "SQLite for Windows Runtime"
set displayNames(WinRT,2013) "SQLite for Windows Runtime"
set displayNames(WinRT81,2013) "SQLite for Windows Runtime (Windows 8.1)"
set displayNames(WP80,2012) "SQLite for Windows Phone"
set displayNames(WP80,2013) "SQLite for Windows Phone"
set displayNames(WP81,2013) "SQLite for Windows Phone 8.1"
set displayNames(Win32,2012) "SQLite for Windows"
set displayNames(Win32,2013) "SQLite for Windows"

if {[string equal $packageFlavor WinRT]} then {
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier Windows
  set targetPlatformVersion v8.0
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]
  set maxPlatformVersion \
      [getMaxPlatformVersionXmlChunk $packageFlavor $vsVersion]
  set extraSdkPath ""
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} elseif {[string equal $packageFlavor WinRT81]} then {
  if {$vsVersion ne "2013"} then {
    fail [appendArgs \
        "unsupported combination, package flavor " $packageFlavor \
................................................................................
        " is only supported with Visual Studio 2013"]
  }
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier Windows
  set targetPlatformVersion v8.1
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]
  set maxPlatformVersion \
      [getMaxPlatformVersionXmlChunk $packageFlavor $vsVersion]
  set extraSdkPath ""
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} elseif {[string equal $packageFlavor WP80]} then {
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier "Windows Phone"
  set targetPlatformVersion v8.0
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]
  set maxPlatformVersion \
      [getMaxPlatformVersionXmlChunk $packageFlavor $vsVersion]
  set extraSdkPath "\\..\\$targetPlatformIdentifier"
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} elseif {[string equal $packageFlavor WP81]} then {
  if {$vsVersion ne "2013"} then {
    fail [appendArgs \
        "unsupported combination, package flavor " $packageFlavor \
        " is only supported with Visual Studio 2013"]
  }
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier WindowsPhoneApp
  set targetPlatformVersion v8.1
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]
  set maxPlatformVersion \
      [getMaxPlatformVersionXmlChunk $packageFlavor $vsVersion]
  set extraSdkPath "\\..\\$targetPlatformIdentifier"
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} elseif {[string equal $packageFlavor Win32]} then {
  set shortName $shortNames($packageFlavor,$vsVersion)
  set displayName $displayNames($packageFlavor,$vsVersion)
  set targetPlatformIdentifier Windows
  set targetPlatformVersion v8.0
  set minVsVersion [getMinVsVersionXmlChunk $vsVersion]
  set maxPlatformVersion \
      [getMaxPlatformVersionXmlChunk $packageFlavor $vsVersion]
  set extraSdkPath ""
  set extraFileListAttributes \
      [getExtraFileListXmlChunk $packageFlavor $vsVersion]
} else {
  fail [appendArgs \
      "unsupported package flavor, must be one of: " \
      [list WinRT WinRT81 WP80 WP81 Win32]]
}

###############################################################################

#
# NOTE: Evaluate the user-specific customizations file, if it exists.
#