SQLite

# Standard options to testfixture
#
TESTOPTS = --verbose=file --output=test-out.txt

# Extra compiler options for various shell tools
#
SHELL_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_FTS4
SHELL_OPT += -DSQLITE_ENABLE_EXPLAIN_COMMENTS
FUZZERSHELL_OPT = -DSQLITE_ENABLE_JSON1
FUZZCHECK_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_MEMSYS5

# This is the default Makefile target.  The objects listed here
# are what get build when you type just "make" with no arguments.
#
all:	sqlite3.h libsqlite3.la sqlite3$(TEXE) $(HAVE_TCL:1=libtclsqlite3.la)

libtclsqlite3.la:	tclsqlite.lo libsqlite3.la
	$(LTLINK) -no-undefined -o $@ tclsqlite.lo \
		libsqlite3.la @TCL_STUB_LIB_SPEC@ $(TLIBS) \
		-rpath "$(TCLLIBDIR)" \
		-version-info "8:6:8" \
		-avoid-version

sqlite3$(TEXE):	$(TOP)/src/shell.c sqlite3.c
	$(LTLINK) $(READLINE_FLAGS) $(SHELL_OPT) -o $@ \
		$(TOP)/src/shell.c sqlite3.c \
		$(LIBREADLINE) $(TLIBS) -rpath "$(libdir)"

sqldiff$(TEXE):	$(TOP)/tool/sqldiff.c sqlite3.c sqlite3.h
	$(LTLINK) -o $@ $(TOP)/tool/sqldiff.c sqlite3.c $(TLIBS)

srcck1$(BEXE):	$(TOP)/tool/srcck1.c
	$(BCC) -o srcck1$(BEXE) $(TOP)/tool/srcck1.c

sourcetest:	srcck1$(BEXE) sqlite3.c
	./srcck1 sqlite3.c

fuzzershell$(TEXE):	$(TOP)/tool/fuzzershell.c sqlite3.c sqlite3.h
	$(LTLINK) -o $@ $(FUZZERSHELL_OPT) \
	  $(TOP)/tool/fuzzershell.c sqlite3.c $(TLIBS)

fuzzcheck$(TEXE):	$(TOP)/test/fuzzcheck.c sqlite3.c sqlite3.h
	$(LTLINK) -o $@ $(FUZZCHECK_OPT) $(TOP)/test/fuzzcheck.c sqlite3.c $(TLIBS)

#
quicktest:	./testfixture$(TEXE)
	./testfixture$(TEXE) $(TOP)/test/extraquick.test $(TESTOPTS)

# This is the common case.  Run many tests that do not take too long,
# including fuzzcheck, sqlite3_analyzer, and sqldiff tests.
#
test:	$(TESTPROGS) sourcetest fastfuzztest
	./testfixture$(TEXE) $(TOP)/test/veryquick.test $(TESTOPTS)

# Run a test using valgrind.  This can take a really long time
# because valgrind is so much slower than a native machine.
#
valgrindtest:	$(TESTPROGS) valgrindfuzz
	OMIT_MISUSE=1 valgrind -v ./testfixture$(TEXE) $(TOP)/test/permutations.test valgrind $(TESTOPTS)

# symbols that do not begin with "sqlite3_". It is run as part of the
# releasetest.tcl script.
#
checksymbols: sqlite3.lo
	nm -g --defined-only sqlite3.o | grep -v " sqlite3_" ; test $$? -ne 0
	echo '0 errors out of 1 tests'

# Build the amalgamation-autoconf package.  The amalamgation-tarball target builds
# a tarball named for the version number.  Ex:  sqlite-autoconf-3110000.tar.gz.
# The snapshot-tarball target builds a tarball named by the SHA1 hash
#
amalgamation-tarball: sqlite3.c
	TOP=$(TOP) sh $(TOP)/tool/mkautoconfamal.sh --normal

snapshot-tarball: sqlite3.c
	TOP=$(TOP) sh $(TOP)/tool/mkautoconfamal.sh --snapshot

# The next two rules are used to support the "threadtest" target. Building
# threadtest runs a few thread-safety tests that are implemented in C. This
# target is invoked by the releasetest.tcl script.
# 
THREADTEST3_SRC = $(TOP)/test/threadtest3.c    \
                  $(TOP)/test/tt3_checkpoint.c \

	rm -f sqlite3.c
	rm -f sqlite3rc.h
	rm -f shell.c sqlite3ext.h
	rm -f sqlite3_analyzer$(TEXE) sqlite3_analyzer.c
	rm -f sqlite-*-output.vsix
	rm -f mptester mptester.exe
	rm -f rbu rbu.exe
	rm -f srcck1 srcck1.exe
	rm -f fuzzershell fuzzershell.exe
	rm -f fuzzcheck fuzzcheck.exe
	rm -f sqldiff sqldiff.exe
	rm -f fts5.* fts5parse.*

distclean:	clean
	rm -f config.h config.log config.status libtool Makefile sqlite3.pc

# This setting does not apply to any binaries that require Tcl to operate
# properly (i.e. the text fixture, etc).
#
!IFNDEF FOR_WINRT
FOR_WINRT = 0
!ENDIF

# Set this non-0 to compile binaries suitable for the UWP environment.
# This setting does not apply to any binaries that require Tcl to operate
# properly (i.e. the text fixture, etc).
#
!IFNDEF FOR_UWP
FOR_UWP = 0
!ENDIF

# Set this non-0 to compile binaries suitable for the Windows 10 platform.
#
!IFNDEF FOR_WIN10
FOR_WIN10 = 0
!ENDIF

EXT_FEATURE_FLAGS =
!ENDIF
!ENDIF

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

# When compiling for the Windows 10 platform, the PLATFORM macro must be set
# to an appropriate value (e.g. x86, x64, arm, arm64, etc).
#
!IF $(FOR_WIN10)!=0
!IFNDEF PLATFORM
!ERROR Using the FOR_WIN10 option requires a value for PLATFORM.
!ENDIF
!ENDIF

# 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:\\=\)

# 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.  Otherwise, this value will
# default to the 'lib' directory underneath the MSVC installation directory.
#
!IFNDEF CRTLIBPATH
CRTLIBPATH = $(VCINSTALLDIR)\lib
!ENDIF

CRTLIBPATH = $(CRTLIBPATH:\\=\)

!ELSEIF $(XCOMPILE)!=0
NCC = "$(VCINSTALLDIR)\bin\$(CC)"
NCC = $(NCC:\\=\)
!ELSE
NCC = $(CC)
!ENDIF

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

NCRTLIBPATH = $(NCRTLIBPATH:\\=\)

# Check for the Platform SDK library path macro.  Otherwise, this
# value will default to the 'lib' directory underneath the Windows
# SDK installation directory (the environment variable used appears
# to be available when using Visual C++ 2008 or later via the
# command line).
#
!IFNDEF NSDKLIBPATH
NSDKLIBPATH = $(WINDOWSSDKDIR)\lib
!ENDIF

NSDKLIBPATH = $(NSDKLIBPATH:\\=\)

# Check for the UCRT library path macro.  Otherwise, this value will
# default to the version-specific, platform-specific 'lib' directory
# underneath the Windows SDK installation directory.
#
!IFNDEF UCRTLIBPATH
UCRTLIBPATH = $(WINDOWSSDKDIR)\lib\$(WINDOWSSDKLIBVERSION)\ucrt\$(PLATFORM)
!ENDIF

UCRTLIBPATH = $(UCRTLIBPATH:\\=\)

# C compiler and options for use in building executables that
# will run on the platform that is doing the build.
#
!IF $(USE_FULLWARN)!=0
BCC = $(NCC) -nologo -W4 $(CCOPTS) $(BCCOPTS)
!ELSE

#
!IF $(USE_FULLWARN)!=0
TCC = $(CC) -nologo -W4 -DINCLUDE_MSVC_H=1 $(CCOPTS) $(TCCOPTS)
!ELSE
TCC = $(CC) -nologo -W3 $(CCOPTS) $(TCCOPTS)
!ENDIF

TCC = $(TCC) -DSQLITE_OS_WIN=1 -I. -I$(TOP) -I$(TOP)\src -fp:precise
RCC = $(RC) -DSQLITE_OS_WIN=1 -I. -I$(TOP) -I$(TOP)\src $(RCOPTS) $(RCCOPTS)

# Adjust the names of the primary targets for use with Windows 10.
#
!IF $(FOR_WIN10)!=0
SQLITE3DLL = winsqlite3.dll
SQLITE3LIB = winsqlite3.lib
SQLITE3EXE = winsqlite3shell.exe

TCC = $(TCC) -DWINAPI_FAMILY=WINAPI_FAMILY_APP
RCC = $(RCC) -DWINAPI_FAMILY=WINAPI_FAMILY_APP
!ENDIF

# C compiler options for the Windows 10 platform (needs MSVC 2015).
#
!IF $(FOR_WIN10)!=0
TCC = $(TCC) /d2guard4 -D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE
BCC = $(BCC) /d2guard4 -D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE
!ENDIF

# Also, we need to dynamically link to the correct MSVC runtime
# when compiling for WinRT (e.g. debug or release) OR if the
# USE_CRT_DLL option is set to force dynamically linking to the
# MSVC runtime library.
#
!IF $(FOR_WINRT)!=0 || $(USE_CRT_DLL)!=0
!IF $(DEBUG)>1
TCC = $(TCC) -MDd
BCC = $(BCC) -MDd
!ELSE
TCC = $(TCC) -MD
BCC = $(BCC) -MD
!ENDIF

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

# When compiling for UWP or the Windows 10 platform, some extra linker
# options are also required.
#
!IF $(FOR_UWP)!=0 || $(FOR_WIN10)!=0
LTLINKOPTS = $(LTLINKOPTS) /DYNAMICBASE /NODEFAULTLIB:kernel32.lib
LTLINKOPTS = $(LTLINKOPTS) mincore.lib
!IFDEF PSDKLIBPATH
LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(PSDKLIBPATH)"
!ENDIF
!ENDIF

!IF $(FOR_WIN10)!=0
LTLINKOPTS = $(LTLINKOPTS) /guard:cf "/LIBPATH:$(UCRTLIBPATH)"
!IF $(DEBUG)>1
LTLINKOPTS = $(LTLINKOPTS) /NODEFAULTLIB:libucrtd.lib /DEFAULTLIB:ucrtd.lib
!ELSE
LTLINKOPTS = $(LTLINKOPTS) /NODEFAULTLIB:libucrt.lib /DEFAULTLIB:ucrt.lib
!ENDIF
!ENDIF

# If either debugging or symbols are enabled, enable PDBs.
#
!IF $(DEBUG)>1 || $(SYMBOLS)!=0
LDFLAGS = /DEBUG $(LDOPTS)
!ELSE
LDFLAGS = $(LDOPTS)

!IF $(USE_RC)!=0
LIBRESOBJS = sqlite3res.lo
!ELSE
LIBRESOBJS =
!ENDIF

# <<mark>>
# Core source code files, part 1.
#
SRC00 = \
  $(TOP)\src\alter.c \
  $(TOP)\src\analyze.c \
  $(TOP)\src\attach.c \
  $(TOP)\src\auth.c \
  $(TOP)\src\backup.c \
  $(TOP)\src\bitvec.c \
  $(TOP)\src\btmutex.c \
  $(TOP)\src\btree.c \


  $(TOP)\src\build.c \
  $(TOP)\src\callback.c \
  $(TOP)\src\complete.c \
  $(TOP)\src\ctime.c \
  $(TOP)\src\date.c \
  $(TOP)\src\dbstat.c \
  $(TOP)\src\delete.c \
  $(TOP)\src\expr.c \
  $(TOP)\src\fault.c \
  $(TOP)\src\fkey.c \
  $(TOP)\src\func.c \
  $(TOP)\src\global.c \
  $(TOP)\src\hash.c \


  $(TOP)\src\insert.c \
  $(TOP)\src\journal.c \
  $(TOP)\src\legacy.c \
  $(TOP)\src\loadext.c \
  $(TOP)\src\main.c \
  $(TOP)\src\malloc.c \
  $(TOP)\src\mem0.c \
  $(TOP)\src\mem1.c \
  $(TOP)\src\mem2.c \
  $(TOP)\src\mem3.c \
  $(TOP)\src\mem5.c \
  $(TOP)\src\memjournal.c \

  $(TOP)\src\mutex.c \

  $(TOP)\src\mutex_noop.c \
  $(TOP)\src\mutex_unix.c \
  $(TOP)\src\mutex_w32.c \
  $(TOP)\src\notify.c \
  $(TOP)\src\os.c \



  $(TOP)\src\os_unix.c \
  $(TOP)\src\os_win.c

# Core source code files, part 2.
#
SRC01 = \
  $(TOP)\src\pager.c \


  $(TOP)\src\pcache.c \

  $(TOP)\src\pcache1.c \
  $(TOP)\src\pragma.c \

  $(TOP)\src\prepare.c \
  $(TOP)\src\printf.c \
  $(TOP)\src\random.c \
  $(TOP)\src\resolve.c \
  $(TOP)\src\rowset.c \
  $(TOP)\src\select.c \
  $(TOP)\src\status.c \





  $(TOP)\src\table.c \
  $(TOP)\src\threads.c \
  $(TOP)\src\tclsqlite.c \
  $(TOP)\src\tokenize.c \
  $(TOP)\src\treeview.c \
  $(TOP)\src\trigger.c \
  $(TOP)\src\utf.c \
  $(TOP)\src\update.c \
  $(TOP)\src\util.c \
  $(TOP)\src\vacuum.c \
  $(TOP)\src\vdbe.c \

  $(TOP)\src\vdbeapi.c \
  $(TOP)\src\vdbeaux.c \
  $(TOP)\src\vdbeblob.c \
  $(TOP)\src\vdbemem.c \
  $(TOP)\src\vdbesort.c \
  $(TOP)\src\vdbetrace.c \
  $(TOP)\src\vtab.c \
  $(TOP)\src\wal.c \
  $(TOP)\src\walker.c \
  $(TOP)\src\where.c \
  $(TOP)\src\wherecode.c \
  $(TOP)\src\whereexpr.c

# Shell source code files.
#
SRC02 = \
  $(TOP)\src\shell.c

# Core miscellaneous files.
#
SRC03 = \
  $(TOP)\src\parse.y

# Core header files, part 1.
#
SRC04 = \
  $(TOP)\src\btree.h \
  $(TOP)\src\btreeInt.h \
  $(TOP)\src\hash.h \
  $(TOP)\src\hwtime.h \
  $(TOP)\src\msvc.h \
  $(TOP)\src\mutex.h \
  $(TOP)\src\os.h \
  $(TOP)\src\os_common.h \
  $(TOP)\src\os_setup.h \
  $(TOP)\src\os_win.h

# Core header files, part 2.
#
SRC05 = \
  $(TOP)\src\pager.h \
  $(TOP)\src\pcache.h \
  $(TOP)\src\pragma.h \
  $(TOP)\src\sqlite.h.in \
  $(TOP)\src\sqlite3ext.h \
  $(TOP)\src\sqliteInt.h \
  $(TOP)\src\sqliteLimit.h \
  $(TOP)\src\vdbe.h \
  $(TOP)\src\vdbeInt.h \
  $(TOP)\src\vxworks.h \
  $(TOP)\src\wal.h \
  $(TOP)\src\whereInt.h

# Extension source code files, part 1.
#
SRC06 = \
  $(TOP)\ext\fts1\fts1.c \

  $(TOP)\ext\fts1\fts1_hash.c \

  $(TOP)\ext\fts1\fts1_porter.c \

  $(TOP)\ext\fts1\fts1_tokenizer1.c \
  $(TOP)\ext\fts2\fts2.c \

  $(TOP)\ext\fts2\fts2_hash.c \

  $(TOP)\ext\fts2\fts2_icu.c \
  $(TOP)\ext\fts2\fts2_porter.c \
  $(TOP)\ext\fts2\fts2_tokenizer.c \
  $(TOP)\ext\fts2\fts2_tokenizer1.c

# Extension source code files, part 2.
#
SRC07 = \
  $(TOP)\ext\fts3\fts3.c \


  $(TOP)\ext\fts3\fts3_aux.c \
  $(TOP)\ext\fts3\fts3_expr.c \
  $(TOP)\ext\fts3\fts3_hash.c \

  $(TOP)\ext\fts3\fts3_icu.c \
  $(TOP)\ext\fts3\fts3_porter.c \
  $(TOP)\ext\fts3\fts3_snippet.c \

  $(TOP)\ext\fts3\fts3_tokenizer.c \
  $(TOP)\ext\fts3\fts3_tokenizer1.c \
  $(TOP)\ext\fts3\fts3_tokenize_vtab.c \
  $(TOP)\ext\fts3\fts3_unicode.c \
  $(TOP)\ext\fts3\fts3_unicode2.c \
  $(TOP)\ext\fts3\fts3_write.c \

  $(TOP)\ext\icu\icu.c \

  $(TOP)\ext\rtree\rtree.c \

  $(TOP)\ext\rbu\sqlite3rbu.c \
  $(TOP)\ext\misc\json1.c

# Extension header files, part 1.
#
SRC08 = \
  $(TOP)\ext\fts1\fts1.h \
  $(TOP)\ext\fts1\fts1_hash.h \
  $(TOP)\ext\fts1\fts1_tokenizer.h \
  $(TOP)\ext\fts2\fts2.h \
  $(TOP)\ext\fts2\fts2_hash.h \
  $(TOP)\ext\fts2\fts2_tokenizer.h

# Extension header files, part 2.
#
SRC09 = \
  $(TOP)\ext\fts3\fts3.h \
  $(TOP)\ext\fts3\fts3Int.h \
  $(TOP)\ext\fts3\fts3_hash.h \
  $(TOP)\ext\fts3\fts3_tokenizer.h \
  $(TOP)\ext\icu\sqliteicu.h \
  $(TOP)\ext\rtree\rtree.h \
  $(TOP)\ext\rbu\sqlite3rbu.h

# Generated source code files
#
SRC10 = \

  opcodes.c \
  parse.c

# Generated header files
#
SRC11 = \
  keywordhash.h \
  opcodes.h \

  parse.h \
  $(SQLITE3H)

# All source code files.
#
SRC = $(SRC00) $(SRC01) $(SRC02) $(SRC03) $(SRC04) $(SRC05) $(SRC06) $(SRC07) $(SRC08) $(SRC09) $(SRC10) $(SRC11)

# Source code to the test files.
#
TESTSRC = \
  $(TOP)\src\test1.c \
  $(TOP)\src\test2.c \
  $(TOP)\src\test3.c \

  $(TOP)\src\test_vfs.c \
  $(TOP)\src\test_windirent.c \
  $(TOP)\src\test_wsd.c \
  $(TOP)\ext\fts3\fts3_term.c \
  $(TOP)\ext\fts3\fts3_test.c \
  $(TOP)\ext\rbu\test_rbu.c

# Statically linked extensions.
#
TESTEXT = \
  $(TOP)\ext\misc\amatch.c \
  $(TOP)\ext\misc\closure.c \
  $(TOP)\ext\misc\eval.c \
  $(TOP)\ext\misc\fileio.c \
  $(TOP)\ext\misc\fuzzer.c \
  $(TOP)\ext\fts5\fts5_tcl.c \
  $(TOP)\ext\fts5\fts5_test_mi.c \
  $(TOP)\ext\fts5\fts5_test_tok.c \
  $(TOP)\ext\misc\ieee754.c \
  $(TOP)\ext\misc\nextchar.c \
  $(TOP)\ext\misc\percentile.c \
  $(TOP)\ext\misc\regexp.c \
  $(TOP)\ext\misc\series.c \
  $(TOP)\ext\misc\spellfix.c \
  $(TOP)\ext\misc\totype.c \
  $(TOP)\ext\misc\wholenumber.c


# Source code to the library files needed by the test fixture
#
TESTSRC2 = \






  $(SRC00) \

  $(SRC01) \
  $(SRC06) \




  $(SRC07) \






















  $(SRC10) \








  $(TOP)\ext\async\sqlite3async.c

# Header files used by all library source files.
#
HDR = \
   $(TOP)\src\btree.h \
   $(TOP)\src\btreeInt.h \

  $(TOP)\test\fuzzdata4.db
# <</mark>>

# Additional compiler options for the shell.  These are only effective
# when the shell is not being dynamically linked.
#
!IF $(DYNAMIC_SHELL)==0 && $(FOR_WIN10)==0
SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_SHELL_JSON1 -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_EXPLAIN_COMMENTS
!ENDIF

# <<mark>>
# Extra compiler options for various test tools.
#
MPTESTER_COMPILE_OPTS = -DSQLITE_SHELL_JSON1 -DSQLITE_ENABLE_FTS5
FUZZERSHELL_COMPILE_OPTS = -DSQLITE_ENABLE_JSON1

$(SQLITE3EXE):	$(TOP)\src\shell.c $(SHELL_CORE_DEP) $(LIBRESOBJS) $(SHELL_CORE_SRC) $(SQLITE3H)
	$(LTLINK) $(SHELL_COMPILE_OPTS) $(READLINE_FLAGS) $(TOP)\src\shell.c $(SHELL_CORE_SRC) \
		/link $(SQLITE3EXEPDB) $(LDFLAGS) $(LTLINKOPTS) $(SHELL_LINK_OPTS) $(LTLIBPATHS) $(LIBRESOBJS) $(LIBREADLINE) $(LTLIBS) $(TLIBS)

# <<mark>>
sqldiff.exe:	$(TOP)\tool\sqldiff.c $(SQLITE3C) $(SQLITE3H)
	$(LTLINK) $(NO_WARN) $(TOP)\tool\sqldiff.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

srcck1.exe:	$(TOP)\tool\srcck1.c
	$(BCC) $(NO_WARN) -Fe$@ $(TOP)\tool\srcck1.c

sourcetest:	srcck1.exe sqlite3.c
	srcck1.exe sqlite3.c

fuzzershell.exe:	$(TOP)\tool\fuzzershell.c $(SQLITE3C) $(SQLITE3H)
	$(LTLINK) $(NO_WARN) $(FUZZERSHELL_COMPILE_OPTS) $(TOP)\tool\fuzzershell.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

fuzzcheck.exe:	$(TOP)\test\fuzzcheck.c $(SQLITE3C) $(SQLITE3H)
	$(LTLINK) $(NO_WARN) $(FUZZCHECK_COMPILE_OPTS) $(TOP)\test\fuzzcheck.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

# build on the target system.  Some of the C source code and header
# files are automatically generated.  This target takes care of
# all that automatic generation.
#
.target_source:	$(SRC) $(TOP)\tool\vdbe-compress.tcl fts5.c
	-rmdir /Q/S tsrc 2>NUL
	-mkdir tsrc
	for %i in ($(SRC00)) do copy /Y %i tsrc
	for %i in ($(SRC01)) do copy /Y %i tsrc
	for %i in ($(SRC02)) do copy /Y %i tsrc
	for %i in ($(SRC03)) do copy /Y %i tsrc
	for %i in ($(SRC04)) do copy /Y %i tsrc
	for %i in ($(SRC05)) do copy /Y %i tsrc
	for %i in ($(SRC06)) do copy /Y %i tsrc
	for %i in ($(SRC07)) do copy /Y %i tsrc
	for %i in ($(SRC08)) do copy /Y %i tsrc
	for %i in ($(SRC09)) do copy /Y %i tsrc
	for %i in ($(SRC10)) do copy /Y %i tsrc
	for %i in ($(SRC11)) do copy /Y %i tsrc
	copy /Y fts5.c tsrc
	copy /Y fts5.h tsrc
	del /Q tsrc\sqlite.h.in tsrc\parse.y 2>NUL
	$(TCLSH_CMD) $(TOP)\tool\vdbe-compress.tcl $(OPTS) < tsrc\vdbe.c > vdbe.new
	move vdbe.new tsrc\vdbe.c
	echo > .target_source

# necessary because the test fixture requires non-API symbols which are
# hidden when the library is built via the amalgamation).
#
TESTFIXTURE_FLAGS = -DTCLSH=1 -DSQLITE_TEST=1 -DSQLITE_CRASH_TEST=1
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_SERVER=1 -DSQLITE_PRIVATE=""
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_CORE $(NO_WARN)

TESTFIXTURE_SRC0 = $(TESTEXT) $(TESTSRC2)
TESTFIXTURE_SRC1 = $(TESTEXT) $(SQLITE3C)
!IF $(USE_AMALGAMATION)==0
TESTFIXTURE_SRC = $(TESTSRC) $(TOP)\src\tclsqlite.c $(TESTFIXTURE_SRC0)
!ELSE
TESTFIXTURE_SRC = $(TESTSRC) $(TOP)\src\tclsqlite.c $(TESTFIXTURE_SRC1)
!ENDIF

	.\fuzzcheck.exe $(FUZZDATA)

fastfuzztest:	fuzzcheck.exe
	.\fuzzcheck.exe --limit-mem 100M $(FUZZDATA)

# Minimal testing that runs in less than 3 minutes (on a fast machine)
#
quicktest:	testfixture.exe sourcetest
	@set PATH=$(LIBTCLPATH);$(PATH)
	.\testfixture.exe $(TOP)\test\extraquick.test $(TESTOPTS)

# This is the common case.  Run many tests that do not take too long,
# including fuzzcheck, sqlite3_analyzer, and sqldiff tests.
#
test:	$(TESTPROGS) sourcetest fastfuzztest
	@set PATH=$(LIBTCLPATH);$(PATH)
	.\testfixture.exe $(TOP)\test\veryquick.test $(TESTOPTS)

smoketest:	$(TESTPROGS)
	@set PATH=$(LIBTCLPATH);$(PATH)
	.\testfixture.exe $(TOP)\test\main.test $(TESTOPTS)

	-rmdir /Q/S tsrc 2>NUL
	del /Q .target_source 2>NUL
	del /Q tclsqlite3.exe 2>NUL
	del /Q testloadext.dll 2>NUL
	del /Q testfixture.exe test.db 2>NUL
	del /Q LogEst.exe fts3view.exe rollback-test.exe showdb.exe 2>NUL
	del /Q showjournal.exe showstat4.exe showwal.exe speedtest1.exe 2>NUL
	del /Q mptester.exe wordcount.exe rbu.exe srcck1.exe 2>NUL
	del /Q $(SQLITE3EXE) $(SQLITE3DLL) sqlite3.def 2>NUL
	del /Q sqlite3.c sqlite3-*.c 2>NUL
	del /Q sqlite3rc.h 2>NUL
	del /Q shell.c sqlite3ext.h 2>NUL
	del /Q sqlite3_analyzer.exe sqlite3_analyzer.c 2>NUL
	del /Q sqlite-*-output.vsix 2>NUL
	del /Q fuzzershell.exe fuzzcheck.exe sqldiff.exe 2>NUL
	del /Q fts5.* fts5parse.* 2>NUL
# <</mark>>

AM_CFLAGS = @THREADSAFE_FLAGS@ @DYNAMIC_EXTENSION_FLAGS@ @FTS5_FLAGS@ @JSON1_FLAGS@ -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_RTREE

lib_LTLIBRARIES = libsqlite3.la
libsqlite3_la_SOURCES = sqlite3.c
libsqlite3_la_LDFLAGS = -no-undefined -version-info 8:6:8

bin_PROGRAMS = sqlite3
sqlite3_SOURCES = shell.c sqlite3.c sqlite3.h

sqlite3_LDADD = @READLINE_LIBS@
sqlite3_DEPENDENCIES = @EXTRA_SHELL_OBJ@
sqlite3_CFLAGS = $(AM_CFLAGS) -DSQLITE_ENABLE_EXPLAIN_COMMENTS

include_HEADERS = sqlite3.h sqlite3ext.h

EXTRA_DIST = sqlite3.1 tea Makefile.msc sqlite3.rc README.txt
pkgconfigdir = ${libdir}/pkgconfig
pkgconfig_DATA = sqlite3.pc

# This setting does not apply to any binaries that require Tcl to operate
# properly (i.e. the text fixture, etc).
#
!IFNDEF FOR_WINRT
FOR_WINRT = 0
!ENDIF

# Set this non-0 to compile binaries suitable for the UWP environment.
# This setting does not apply to any binaries that require Tcl to operate
# properly (i.e. the text fixture, etc).
#
!IFNDEF FOR_UWP
FOR_UWP = 0
!ENDIF

# Set this non-0 to compile binaries suitable for the Windows 10 platform.
#
!IFNDEF FOR_WIN10
FOR_WIN10 = 0
!ENDIF

EXT_FEATURE_FLAGS =
!ENDIF
!ENDIF

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

# When compiling for the Windows 10 platform, the PLATFORM macro must be set
# to an appropriate value (e.g. x86, x64, arm, arm64, etc).
#
!IF $(FOR_WIN10)!=0
!IFNDEF PLATFORM
!ERROR Using the FOR_WIN10 option requires a value for PLATFORM.
!ENDIF
!ENDIF

# 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:\\=\)

# 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.  Otherwise, this value will
# default to the 'lib' directory underneath the MSVC installation directory.
#
!IFNDEF CRTLIBPATH
CRTLIBPATH = $(VCINSTALLDIR)\lib
!ENDIF

CRTLIBPATH = $(CRTLIBPATH:\\=\)

!ELSEIF $(XCOMPILE)!=0
NCC = "$(VCINSTALLDIR)\bin\$(CC)"
NCC = $(NCC:\\=\)
!ELSE
NCC = $(CC)
!ENDIF

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

NCRTLIBPATH = $(NCRTLIBPATH:\\=\)

# Check for the Platform SDK library path macro.  Otherwise, this
# value will default to the 'lib' directory underneath the Windows
# SDK installation directory (the environment variable used appears
# to be available when using Visual C++ 2008 or later via the
# command line).
#
!IFNDEF NSDKLIBPATH
NSDKLIBPATH = $(WINDOWSSDKDIR)\lib
!ENDIF

NSDKLIBPATH = $(NSDKLIBPATH:\\=\)

# Check for the UCRT library path macro.  Otherwise, this value will
# default to the version-specific, platform-specific 'lib' directory
# underneath the Windows SDK installation directory.
#
!IFNDEF UCRTLIBPATH
UCRTLIBPATH = $(WINDOWSSDKDIR)\lib\$(WINDOWSSDKLIBVERSION)\ucrt\$(PLATFORM)
!ENDIF

UCRTLIBPATH = $(UCRTLIBPATH:\\=\)

# C compiler and options for use in building executables that
# will run on the platform that is doing the build.
#
!IF $(USE_FULLWARN)!=0
BCC = $(NCC) -nologo -W4 $(CCOPTS) $(BCCOPTS)
!ELSE

#
!IF $(USE_FULLWARN)!=0
TCC = $(CC) -nologo -W4 -DINCLUDE_MSVC_H=1 $(CCOPTS) $(TCCOPTS)
!ELSE
TCC = $(CC) -nologo -W3 $(CCOPTS) $(TCCOPTS)
!ENDIF

TCC = $(TCC) -DSQLITE_OS_WIN=1 -I. -I$(TOP) -fp:precise
RCC = $(RC) -DSQLITE_OS_WIN=1 -I. -I$(TOP) $(RCOPTS) $(RCCOPTS)

# Adjust the names of the primary targets for use with Windows 10.
#
!IF $(FOR_WIN10)!=0
SQLITE3DLL = winsqlite3.dll
SQLITE3LIB = winsqlite3.lib
SQLITE3EXE = winsqlite3shell.exe

TCC = $(TCC) -DWINAPI_FAMILY=WINAPI_FAMILY_APP
RCC = $(RCC) -DWINAPI_FAMILY=WINAPI_FAMILY_APP
!ENDIF

# C compiler options for the Windows 10 platform (needs MSVC 2015).
#
!IF $(FOR_WIN10)!=0
TCC = $(TCC) /d2guard4 -D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE
BCC = $(BCC) /d2guard4 -D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE
!ENDIF

# Also, we need to dynamically link to the correct MSVC runtime
# when compiling for WinRT (e.g. debug or release) OR if the
# USE_CRT_DLL option is set to force dynamically linking to the
# MSVC runtime library.
#
!IF $(FOR_WINRT)!=0 || $(USE_CRT_DLL)!=0
!IF $(DEBUG)>1
TCC = $(TCC) -MDd
BCC = $(BCC) -MDd
!ELSE
TCC = $(TCC) -MD
BCC = $(BCC) -MD
!ENDIF

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

# When compiling for UWP or the Windows 10 platform, some extra linker
# options are also required.
#
!IF $(FOR_UWP)!=0 || $(FOR_WIN10)!=0
LTLINKOPTS = $(LTLINKOPTS) /DYNAMICBASE /NODEFAULTLIB:kernel32.lib
LTLINKOPTS = $(LTLINKOPTS) mincore.lib
!IFDEF PSDKLIBPATH
LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(PSDKLIBPATH)"
!ENDIF
!ENDIF

!IF $(FOR_WIN10)!=0
LTLINKOPTS = $(LTLINKOPTS) /guard:cf "/LIBPATH:$(UCRTLIBPATH)"
!IF $(DEBUG)>1
LTLINKOPTS = $(LTLINKOPTS) /NODEFAULTLIB:libucrtd.lib /DEFAULTLIB:ucrtd.lib
!ELSE
LTLINKOPTS = $(LTLINKOPTS) /NODEFAULTLIB:libucrt.lib /DEFAULTLIB:ucrt.lib
!ENDIF
!ENDIF

# If either debugging or symbols are enabled, enable PDBs.
#
!IF $(DEBUG)>1 || $(SYMBOLS)!=0
LDFLAGS = /DEBUG $(LDOPTS)
!ELSE
LDFLAGS = $(LDOPTS)

!ENDIF


# Additional compiler options for the shell.  These are only effective
# when the shell is not being dynamically linked.
#
!IF $(DYNAMIC_SHELL)==0 && $(FOR_WIN10)==0
SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_SHELL_JSON1 -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_EXPLAIN_COMMENTS
!ENDIF


# This is the default Makefile target.  The objects listed here
# are what get build when you type just "make" with no arguments.
#
all:	dll libsqlite3.lib shell

This package contains:

 * the SQLite library amalgamation source code file: sqlite3.c

 * the sqlite3.h and sqlite3ext.h header files that define the C-language
   interface to the sqlite3.c library file
 * the shell.c file used to build the sqlite3 command-line shell program
 * autoconf/automake installation infrastucture for building on POSIX
   compliant systems
 * a Makefile.msc and sqlite3.rc for building with Microsoft Visual C++ on
   Windows

SUMMARY OF HOW TO BUILD
=======================

  Unix:      ./configure; make
  Windows:   nmake /f Makefile.msc

  $ CFLAGS="-Os" ./configure

to produce a smaller installation footprint.

Other SQLite compilation parameters can also be set using CFLAGS. For
example:

  $ CFLAGS="-Os -DSQLITE_THREADSAFE=0" ./configure


BUILDING WITH MICROSOFT VISUAL C++
==================================

To compile for Windows using Microsoft Visual C++:

Using Microsoft Visual C++ 2013 (or later) is required.  When using the
above, something like the following macro will need to be added to the
NMAKE command line as well:

  "NSDKLIBPATH=%WindowsSdkDir%\..\8.1\lib\winv6.3\um\x86"

Building for UWP 10.0
---------------------

  FOR_WINRT=1 FOR_UWP=1

Using Microsoft Visual C++ 2015 (or later) is required.  When using the
above, something like the following macros will need to be added to the
NMAKE command line as well:

  "NSDKLIBPATH=%WindowsSdkDir%\..\10\lib\10.0.10586.0\um\x86"
  "PSDKLIBPATH=%WindowsSdkDir%\..\10\lib\10.0.10586.0\um\x86"

*/
#ifndef _FTSINT_H
#define _FTSINT_H

#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) 
# define NDEBUG 1
#endif

/* FTS3/FTS4 require virtual tables */
#ifdef SQLITE_OMIT_VIRTUALTABLE
# undef SQLITE_ENABLE_FTS3
# undef SQLITE_ENABLE_FTS4
#endif

/*
** FTS4 is really an extension for FTS3.  It is enabled using the
** SQLITE_ENABLE_FTS3 macro.  But to avoid confusion we also all
** the SQLITE_ENABLE_FTS4 macro to serve as an alisse for SQLITE_ENABLE_FTS3.
*/
#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3)

  pHash = (Fts3Hash *)sqlite3_user_data(context);

  zName = sqlite3_value_text(argv[0]);
  nName = sqlite3_value_bytes(argv[0])+1;

  if( argc==2 ){
#ifdef SQLITE_ENABLE_FTS3_TOKENIZER
    void *pOld;
    int n = sqlite3_value_bytes(argv[1]);
    if( zName==0 || n!=sizeof(pPtr) ){
      sqlite3_result_error(context, "argument type mismatch", -1);
      return;
    }
    pPtr = *(void **)sqlite3_value_blob(argv[1]);
    pOld = sqlite3Fts3HashInsert(pHash, (void *)zName, nName, pPtr);
    if( pOld==pPtr ){
      sqlite3_result_error(context, "out of memory", -1);
      return;
    }
#else
    sqlite3_result_error(context, "fts3tokenize: " 
        "disabled - rebuild with -DSQLITE_ENABLE_FTS3_TOKENIZER", -1
    );
    return;
#endif /* SQLITE_ENABLE_FTS3_TOKENIZER */
  }else
  {
    if( zName ){
      pPtr = sqlite3Fts3HashFind(pHash, zName, nName);
    }
    if( !pPtr ){
      char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName);
      sqlite3_result_error(context, zErr, -1);
      sqlite3_free(zErr);

    sqlite3_result_error(context, zErr, -1);
  }else{
    sqlite3_result_text(context, Tcl_GetString(pRet), -1, SQLITE_TRANSIENT);
  }
  Tcl_DecrRefCount(pRet);
}

#ifdef SQLITE_ENABLE_FTS3_TOKENIZER
static
int registerTokenizer(
  sqlite3 *db, 
  char *zName, 
  const sqlite3_tokenizer_module *p
){
  int rc;

  sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC);
  sqlite3_bind_blob(pStmt, 2, &p, sizeof(p), SQLITE_STATIC);
  sqlite3_step(pStmt);

  return sqlite3_finalize(pStmt);
}
#endif /* SQLITE_ENABLE_FTS3_TOKENIZER */


static
int queryTokenizer(
  sqlite3 *db, 
  char *zName,  
  const sqlite3_tokenizer_module **pp
){

  assert( p1==p2 );
  rc = queryTokenizer(db, "nosuchtokenizer", &p2);
  assert( rc==SQLITE_ERROR );
  assert( p2==0 );
  assert( 0==strcmp(sqlite3_errmsg(db), "unknown tokenizer: nosuchtokenizer") );

  /* Test the storage function */
#ifdef SQLITE_ENABLE_FTS3_TOKENIZER
  rc = registerTokenizer(db, "nosuchtokenizer", p1);
  assert( rc==SQLITE_OK );
  rc = queryTokenizer(db, "nosuchtokenizer", &p2);
  assert( rc==SQLITE_OK );
  assert( p2==p1 );
#endif

  sqlite3_result_text(context, "ok", -1, SQLITE_STATIC);
}

#endif

/*

  puts "** The results are undefined if the value passed to this function"
  puts "** is less than zero."
  puts "*/"
  puts "int ${zFunc}\(int c)\{"
  an_print_range_array $lRange
  an_print_ascii_bitmap $lRange
  puts {
  if( (unsigned int)c<128 ){
    return ( (aAscii[c >> 5] & (1 << (c & 0x001F)))==0 );
  }else if( (unsigned int)c<(1<<22) ){
    unsigned int key = (((unsigned int)c)<<10) | 0x000003FF;
    int iRes = 0;
    int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
    int iLo = 0;
    while( iHi>=iLo ){
      int iTest = (iHi + iLo) / 2;
      if( key >= aEntry[iTest] ){

#include <assert.h>

#ifndef SQLITE_AMALGAMATION

typedef unsigned char  u8;
typedef unsigned int   u32;
typedef unsigned short u16;
typedef short i16;
typedef sqlite3_int64 i64;
typedef sqlite3_uint64 u64;

#define ArraySize(x) ((int)(sizeof(x) / sizeof(x[0])))

#define testcase(x)
#define ALWAYS(x) 1

*/
#ifdef SQLITE_DEBUG
extern int sqlite3_fts5_may_be_corrupt;
# define assert_nc(x) assert(sqlite3_fts5_may_be_corrupt || (x))
#else
# define assert_nc(x) assert(x)
#endif

/* Mark a function parameter as unused, to suppress nuisance compiler
** warnings. */
#ifndef UNUSED_PARAM
# define UNUSED_PARAM(X)  (void)(X)
#endif

#ifndef UNUSED_PARAM2
# define UNUSED_PARAM2(X, Y)  (void)(X), (void)(Y)
#endif

typedef struct Fts5Global Fts5Global;
typedef struct Fts5Colset Fts5Colset;

/* If a NEAR() clump or phrase may only match a specific set of columns, 
** then an object of the following type is used to record the set of columns.
** Each entry in the aiCol[] array is a column that may be matched.

int sqlite3Fts5PoslistReaderNext(Fts5PoslistReader*);

typedef struct Fts5PoslistWriter Fts5PoslistWriter;
struct Fts5PoslistWriter {
  i64 iPrev;
};
int sqlite3Fts5PoslistWriterAppend(Fts5Buffer*, Fts5PoslistWriter*, i64);
void sqlite3Fts5PoslistSafeAppend(Fts5Buffer*, i64*, i64);

int sqlite3Fts5PoslistNext64(
  const u8 *a, int n,             /* Buffer containing poslist */
  int *pi,                        /* IN/OUT: Offset within a[] */
  i64 *piOff                      /* IN/OUT: Current offset */
);

/*
** Create/destroy an Fts5Index object.
*/
int sqlite3Fts5IndexOpen(Fts5Config *pConfig, int bCreate, Fts5Index**, char**);
int sqlite3Fts5IndexClose(Fts5Index *p);











/*
** Return a simple checksum value based on the arguments.
*/
u64 sqlite3Fts5IndexEntryCksum(
  i64 iRowid, 
  int iCol, 
  int iPos, 

/*
** The various operations on open token or token prefix iterators opened
** using sqlite3Fts5IndexQuery().
*/
int sqlite3Fts5IterNext(Fts5IndexIter*);
int sqlite3Fts5IterNextFrom(Fts5IndexIter*, i64 iMatch);


/*
** Close an iterator opened by sqlite3Fts5IndexQuery().
*/
void sqlite3Fts5IterClose(Fts5IndexIter*);

/*

Fts5PoslistPopulator *sqlite3Fts5ExprClearPoslists(Fts5Expr*, int);
int sqlite3Fts5ExprPopulatePoslists(
    Fts5Config*, Fts5Expr*, Fts5PoslistPopulator*, int, const char*, int
);
void sqlite3Fts5ExprCheckPoslists(Fts5Expr*, i64);
void sqlite3Fts5ExprClearEof(Fts5Expr*);

int sqlite3Fts5ExprClonePhrase(Fts5Expr*, int, Fts5Expr**);

int sqlite3Fts5ExprPhraseCollist(Fts5Expr *, int, const u8 **, int *);

/*******************************************
** The fts5_expr.c API above this point is used by the other hand-written
** C code in this module. The interfaces below this point are called by
** the parser code in fts5parse.y.  */

  int nToken,                     /* Size of token in bytes */
  int iStartOff,                  /* Start offset of token */
  int iEndOff                     /* End offset of token */
){
  HighlightContext *p = (HighlightContext*)pContext;
  int rc = SQLITE_OK;
  int iPos;

  UNUSED_PARAM2(pToken, nToken);

  if( tflags & FTS5_TOKEN_COLOCATED ) return SQLITE_OK;
  iPos = p->iPos++;

  if( p->iRangeEnd>0 ){
    if( iPos<p->iRangeStart || iPos>p->iRangeEnd ) return SQLITE_OK;
    if( p->iRangeStart && iPos==p->iRangeStart ) p->iOff = iStartOff;

*/
static int fts5CountCb(
  const Fts5ExtensionApi *pApi, 
  Fts5Context *pFts,
  void *pUserData                 /* Pointer to sqlite3_int64 variable */
){
  sqlite3_int64 *pn = (sqlite3_int64*)pUserData;
  UNUSED_PARAM2(pApi, pFts);
  (*pn)++;
  return SQLITE_OK;
}

/*
** Set *ppData to point to the Fts5Bm25Data object for the current query. 
** If the object has not already been allocated, allocate and populate it

*/



#include "fts5Int.h"

int sqlite3Fts5BufferSize(int *pRc, Fts5Buffer *pBuf, u32 nByte){
  if( (u32)pBuf->nSpace<nByte ){
    u32 nNew = pBuf->nSpace ? pBuf->nSpace : 64;
    u8 *pNew;
    while( nNew<nByte ){
      nNew = nNew * 2;
    }
    pNew = sqlite3_realloc(pBuf->p, nNew);
    if( pNew==0 ){
      *pRc = SQLITE_NOMEM;
      return 1;
    }else{
      pBuf->nSpace = nNew;
      pBuf->p = pNew;
    }
  }
  return 0;
}


/*
** Encode value iVal as an SQLite varint and append it to the buffer object

){
  memset(pIter, 0, sizeof(*pIter));
  pIter->a = a;
  pIter->n = n;
  sqlite3Fts5PoslistReaderNext(pIter);
  return pIter->bEof;
}

/*
** Append position iPos to the position list being accumulated in buffer
** pBuf, which must be already be large enough to hold the new data.
** The previous position written to this list is *piPrev. *piPrev is set
** to iPos before returning.
*/
void sqlite3Fts5PoslistSafeAppend(
  Fts5Buffer *pBuf, 
  i64 *piPrev, 
  i64 iPos
){
  static const i64 colmask = ((i64)(0x7FFFFFFF)) << 32;
  if( (iPos & colmask) != (*piPrev & colmask) ){
    pBuf->p[pBuf->n++] = 1;
    pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos>>32));
    *piPrev = (iPos & colmask);
  }
  pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos-*piPrev)+2);
  *piPrev = iPos;
}

int sqlite3Fts5PoslistWriterAppend(
  Fts5Buffer *pBuf, 
  Fts5PoslistWriter *pWriter,
  i64 iPos
){

  int rc = 0;   /* Initialized only to suppress erroneous warning from Clang */
  if( fts5BufferGrow(&rc, pBuf, 5+5+5) ) return rc;






  sqlite3Fts5PoslistSafeAppend(pBuf, &pWriter->iPrev, iPos);

  return SQLITE_OK;
}

void *sqlite3Fts5MallocZero(int *pRc, int nByte){
  void *pRet = 0;
  if( *pRc==SQLITE_OK ){
    pRet = sqlite3_malloc(nByte);
    if( pRet==0 && nByte>0 ){

        pEntry = pEntry->pNext;
        sqlite3_free(pDel);
      }
    }
    sqlite3_free(p);
  }
}

typedef struct Fts5Enum Fts5Enum;

static int fts5ConfigSetEnum(
  const Fts5Enum *aEnum, 
  const char *zEnum, 
  int *peVal
){
  int nEnum = (int)strlen(zEnum);
  int i;
  int iVal = -1;

  for(i=0; aEnum[i].zName; i++){
    if( sqlite3_strnicmp(aEnum[i].zName, zEnum, nEnum)==0 ){
      if( iVal>=0 ) return SQLITE_ERROR;
      iVal = aEnum[i].eVal;

  }

  if( rc==SQLITE_OK ){
    pConfig->iCookie = iCookie;
  }
  return rc;
}

}

/*
** Argument pTerm must be a synonym iterator.
*/
static int fts5ExprSynonymList(
  Fts5ExprTerm *pTerm, 


  i64 iRowid,
  Fts5Buffer *pBuf,               /* Use this buffer for space if required */
  u8 **pa, int *pn
){
  Fts5PoslistReader aStatic[4];
  Fts5PoslistReader *aIter = aStatic;
  int nIter = 0;

**
** SQLITE_OK is returned if an error occurs, or an SQLite error code 
** otherwise. It is not considered an error code if the current rowid is 
** not a match.
*/
static int fts5ExprPhraseIsMatch(
  Fts5ExprNode *pNode,            /* Node pPhrase belongs to */

  Fts5ExprPhrase *pPhrase,        /* Phrase object to initialize */
  int *pbMatch                    /* OUT: Set to true if really a match */
){
  Fts5PoslistWriter writer = {0};
  Fts5PoslistReader aStatic[4];
  Fts5PoslistReader *aIter = aStatic;
  int i;

  for(i=0; i<pPhrase->nTerm; i++){
    Fts5ExprTerm *pTerm = &pPhrase->aTerm[i];
    int n = 0;
    int bFlag = 0;
    u8 *a = 0;
    if( pTerm->pSynonym ){
      Fts5Buffer buf = {0, 0, 0};
      rc = fts5ExprSynonymList(pTerm, pNode->iRowid, &buf, &a, &n);


      if( rc ){
        sqlite3_free(a);
        goto ismatch_out;
      }
      if( a==buf.p ) bFlag = 1;
    }else{
      a = (u8*)pTerm->pIter->pData;

    /* Check that each phrase in the nearset matches the current row.
    ** Populate the pPhrase->poslist buffers at the same time. If any
    ** phrase is not a match, break out of the loop early.  */
    for(i=0; rc==SQLITE_OK && i<pNear->nPhrase; i++){
      Fts5ExprPhrase *pPhrase = pNear->apPhrase[i];
      if( pPhrase->nTerm>1 || pPhrase->aTerm[0].pSynonym || pNear->pColset ){
        int bMatch = 0;
        rc = fts5ExprPhraseIsMatch(pNode, pPhrase, &bMatch);
        if( bMatch==0 ) break;
      }else{
        Fts5IndexIter *pIter = pPhrase->aTerm[0].pIter;
        fts5BufferSet(&rc, &pPhrase->poslist, pIter->nData, pIter->pData);
      }
    }

  int iUnused1,                   /* Start offset of token */
  int iUnused2                    /* End offset of token */
){
  int rc = SQLITE_OK;
  const int SZALLOC = 8;
  TokenCtx *pCtx = (TokenCtx*)pContext;
  Fts5ExprPhrase *pPhrase = pCtx->pPhrase;

  UNUSED_PARAM2(iUnused1, iUnused2);

  /* If an error has already occurred, this is a no-op */
  if( pCtx->rc!=SQLITE_OK ) return pCtx->rc;

  assert( pPhrase==0 || pPhrase->nTerm>0 );
  if( pPhrase && (tflags & FTS5_TOKEN_COLOCATED) ){
    Fts5ExprTerm *pSyn;

}

/*
** Create a new FTS5 expression by cloning phrase iPhrase of the
** expression passed as the second argument.
*/
int sqlite3Fts5ExprClonePhrase(

  Fts5Expr *pExpr, 
  int iPhrase, 
  Fts5Expr **ppNew
){
  int rc = SQLITE_OK;             /* Return code */
  Fts5ExprPhrase *pOrig;          /* The phrase extracted from pExpr */
  int i;                          /* Used to iterate through phrase terms */

  Fts5Expr *pNew = 0;             /* Expression to return via *ppNew */

  TokenCtx sCtx = {0,0};          /* Context object for fts5ParseTokenize */


  pOrig = pExpr->apExprPhrase[iPhrase];

  pNew = (Fts5Expr*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5Expr));
  if( rc==SQLITE_OK ){
    pNew->apExprPhrase = (Fts5ExprPhrase**)sqlite3Fts5MallocZero(&rc, 
        sizeof(Fts5ExprPhrase*));
  }
  if( rc==SQLITE_OK ){
    pNew->pRoot = (Fts5ExprNode*)sqlite3Fts5MallocZero(&rc, 

}

static int fts5ExprPopulatePoslistsCb(
  void *pCtx,                /* Copy of 2nd argument to xTokenize() */
  int tflags,                /* Mask of FTS5_TOKEN_* flags */
  const char *pToken,        /* Pointer to buffer containing token */
  int nToken,                /* Size of token in bytes */
  int iUnused1,              /* Byte offset of token within input text */
  int iUnused2               /* Byte offset of end of token within input text */
){
  Fts5ExprCtx *p = (Fts5ExprCtx*)pCtx;
  Fts5Expr *pExpr = p->pExpr;
  int i;

  UNUSED_PARAM2(iUnused1, iUnused2);

  if( (tflags & FTS5_TOKEN_COLOCATED)==0 ) p->iOff++;
  for(i=0; i<pExpr->nPhrase; i++){
    Fts5ExprTerm *pTerm;
    if( p->aPopulator[i].bOk==0 ) continue;
    for(pTerm=&pExpr->apExprPhrase[i]->aTerm[0]; pTerm; pTerm=pTerm->pSynonym){
      int nTerm = strlen(pTerm->zTerm);

   && pNode->iRowid==pExpr->pRoot->iRowid 
   && pPhrase->poslist.n>0
  ){
    Fts5ExprTerm *pTerm = &pPhrase->aTerm[0];
    if( pTerm->pSynonym ){
      Fts5Buffer *pBuf = (Fts5Buffer*)&pTerm->pSynonym[1];
      rc = fts5ExprSynonymList(
          pTerm, pNode->iRowid, pBuf, (u8**)ppCollist, pnCollist
      );
    }else{
      *ppCollist = pPhrase->aTerm[0].pIter->pData;
      *pnCollist = pPhrase->aTerm[0].pIter->nData;
    }
  }else{
    *ppCollist = 0;
    *pnCollist = 0;
  }

  return rc;
}

struct Fts5HashEntry {
  Fts5HashEntry *pHashNext;       /* Next hash entry with same hash-key */
  Fts5HashEntry *pScanNext;       /* Next entry in sorted order */
  
  int nAlloc;                     /* Total size of allocation */
  int iSzPoslist;                 /* Offset of space for 4-byte poslist size */
  int nData;                      /* Total bytes of data (incl. structure) */
  int nKey;                       /* Length of zKey[] in bytes */
  u8 bDel;                        /* Set delete-flag @ iSzPoslist */
  u8 bContent;                    /* Set content-flag (detail=none mode) */

  i16 iCol;                       /* Column of last value written */
  int iPos;                       /* Position of last value written */
  i64 iRowid;                     /* Rowid of last value written */
  char zKey[8];                   /* Nul-terminated entry key */
};

/*
** Size of Fts5HashEntry without the zKey[] array.

  
  bNew = (pHash->eDetail==FTS5_DETAIL_FULL);

  /* Attempt to locate an existing hash entry */
  iHash = fts5HashKey2(pHash->nSlot, (u8)bByte, (const u8*)pToken, nToken);
  for(p=pHash->aSlot[iHash]; p; p=p->pHashNext){
    if( p->zKey[0]==bByte 
     && p->nKey==nToken
     && memcmp(&p->zKey[1], pToken, nToken)==0 

    ){
      break;
    }
  }

  /* If an existing hash entry cannot be found, create a new one. */
  if( p==0 ){

    p = (Fts5HashEntry*)sqlite3_malloc(nByte);
    if( !p ) return SQLITE_NOMEM;
    memset(p, 0, FTS5_HASHENTRYSIZE);
    p->nAlloc = nByte;
    p->zKey[0] = bByte;
    memcpy(&p->zKey[1], pToken, nToken);
    assert( iHash==fts5HashKey(pHash->nSlot, (u8*)p->zKey, nToken+1) );
    p->nKey = nToken;
    p->zKey[nToken+1] = '\0';
    p->nData = nToken+1 + 1 + FTS5_HASHENTRYSIZE;
    p->pHashNext = pHash->aSlot[iHash];
    pHash->aSlot[iHash] = p;
    pHash->nEntry++;

    /* Add the first rowid field to the hash-entry */

  /* Invoked to set output variables. */
  void (*xSetOutputs)(Fts5Iter*, Fts5SegIter*);

  int nSeg;                       /* Size of aSeg[] array */
  int bRev;                       /* True to iterate in reverse order */
  u8 bSkipEmpty;                  /* True to skip deleted entries */


  i64 iSwitchRowid;               /* Firstest rowid of other than aFirst[1] */
  Fts5CResult *aFirst;            /* Current merge state (see above) */
  Fts5SegIter aSeg[1];            /* Array of segment iterators */
};

*/
static int fts5BufferCompare(Fts5Buffer *pLeft, Fts5Buffer *pRight){
  int nCmp = MIN(pLeft->n, pRight->n);
  int res = memcmp(pLeft->p, pRight->p, nCmp);
  return (res==0 ? (pLeft->n - pRight->n) : res);
}












static int fts5LeafFirstTermOff(Fts5Data *pLeaf){
  int ret;
  fts5GetVarint32(&pLeaf->p[pLeaf->szLeaf], ret);
  return ret;
}

/*

    i += sqlite3Fts5GetVarint(&pData[i], &pRet->nWriteCounter);

    for(iLvl=0; rc==SQLITE_OK && iLvl<nLevel; iLvl++){
      Fts5StructureLevel *pLvl = &pRet->aLevel[iLvl];
      int nTotal;
      int iSeg;

      if( i>=nData ){
        rc = FTS5_CORRUPT;
      }else{
        i += fts5GetVarint32(&pData[i], pLvl->nMerge);
        i += fts5GetVarint32(&pData[i], nTotal);
        assert( nTotal>=pLvl->nMerge );
        pLvl->aSeg = (Fts5StructureSegment*)sqlite3Fts5MallocZero(&rc, 
            nTotal * sizeof(Fts5StructureSegment)
        );
      }

      if( rc==SQLITE_OK ){
        pLvl->nSeg = nTotal;
        for(iSeg=0; iSeg<nTotal; iSeg++){
          if( i>=nData ){
            rc = FTS5_CORRUPT;
            break;
          }
          i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].iSegid);
          i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].pgnoFirst);
          i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].pgnoLast);
        }

      }
    }
    if( rc!=SQLITE_OK ){
      fts5StructureRelease(pRet);
      pRet = 0;

    }
  }

  *ppOut = pRet;
  return rc;
}

*/
static void fts5SegIterLoadTerm(Fts5Index *p, Fts5SegIter *pIter, int nKeep){
  u8 *a = pIter->pLeaf->p;        /* Buffer to read data from */
  int iOff = pIter->iLeafOffset;  /* Offset to read at */
  int nNew;                       /* Bytes of new data */

  iOff += fts5GetVarint32(&a[iOff], nNew);
  if( iOff+nNew>pIter->pLeaf->nn ){
    p->rc = FTS5_CORRUPT;
    return;
  }
  pIter->term.n = nKeep;
  fts5BufferAppendBlob(&p->rc, &pIter->term, nNew, &a[iOff]);
  iOff += nNew;
  pIter->iTermLeafOffset = iOff;
  pIter->iTermLeafPgno = pIter->iLeafPgno;
  pIter->iLeafOffset = iOff;

** Advance iterator pIter to the next entry.
**
** This version of fts5SegIterNext() is only used by reverse iterators.
*/
static void fts5SegIterNext_Reverse(
  Fts5Index *p,                   /* FTS5 backend object */
  Fts5SegIter *pIter,             /* Iterator to advance */
  int *pbUnused                   /* Unused */
){
  assert( pIter->flags & FTS5_SEGITER_REVERSE );
  assert( pIter->pNextLeaf==0 );
  UNUSED_PARAM(pbUnused);

  if( pIter->iRowidOffset>0 ){
    u8 *a = pIter->pLeaf->p;
    int iOff;
    i64 iDelta;

    pIter->iRowidOffset--;
    pIter->iLeafOffset = pIter->aRowidOffset[pIter->iRowidOffset];

    int iPoslist;
    if( pIter->iTermLeafPgno==pIter->iLeafPgno ){
      iPoslist = pIter->iTermLeafOffset;
    }else{
      iPoslist = 4;
    }
    fts5IndexSkipVarint(pLeaf->p, iPoslist);



    pIter->iLeafOffset = iPoslist;

    /* If this condition is true then the largest rowid for the current
    ** term may not be stored on the current page. So search forward to
    ** see where said rowid really is.  */
    if( pIter->iEndofDoclist>=pLeaf->szLeaf ){
      int pgno;

** pSeg. If there is no such term in the index, the iterator is set to EOF.
**
** If an error occurs, Fts5Index.rc is set to an appropriate error code. If 
** an error has already occurred when this function is called, it is a no-op.
*/
static void fts5SegIterSeekInit(
  Fts5Index *p,                   /* FTS5 backend */

  const u8 *pTerm, int nTerm,     /* Term to seek to */
  int flags,                      /* Mask of FTS5INDEX_XXX flags */
  Fts5StructureSegment *pSeg,     /* Description of segment */
  Fts5SegIter *pIter              /* Object to populate */
){
  int iPg = 1;
  int bGe = (flags & FTS5INDEX_QUERY_SCAN);

  }while( p->rc==SQLITE_OK );
}


/*
** Free the iterator object passed as the second argument.
*/
static void fts5MultiIterFree(Fts5Iter *pIter){
  if( pIter ){
    int i;
    for(i=0; i<pIter->nSeg; i++){
      fts5SegIterClear(&pIter->aSeg[i]);
    }
    fts5StructureRelease(pIter->pStruct);
    fts5BufferFree(&pIter->poslist);

** If it does so successfully, 0 is returned. Otherwise 1.
**
** If non-zero is returned, the caller should call fts5MultiIterAdvanced()
** on the iterator instead. That function does the same as this one, except
** that it deals with more complicated cases as well.
*/ 
static int fts5MultiIterAdvanceRowid(

  Fts5Iter *pIter,                /* Iterator to update aFirst[] array for */
  int iChanged,                   /* Index of sub-iterator just advanced */
  Fts5SegIter **ppFirst
){
  Fts5SegIter *pNew = &pIter->aSeg[iChanged];

  if( pNew->iRowid==pIter->iSwitchRowid

    if( bUseFrom && pSeg->pDlidx ){
      fts5SegIterNextFrom(p, pSeg, iFrom);
    }else{
      pSeg->xNext(p, pSeg, &bNewTerm);
    }

    if( pSeg->pLeaf==0 || bNewTerm 
     || fts5MultiIterAdvanceRowid(pIter, iFirst, &pSeg)
    ){
      fts5MultiIterAdvanced(p, pIter, iFirst, 1);
      fts5MultiIterSetEof(pIter);
      pSeg = &pIter->aSeg[pIter->aFirst[1].iFirst];
      if( pSeg->pLeaf==0 ) return;
    }

      int iFirst = pIter->aFirst[1].iFirst;
      Fts5SegIter *pSeg = &pIter->aSeg[iFirst];
      int bNewTerm = 0;

      assert( p->rc==SQLITE_OK );
      pSeg->xNext(p, pSeg, &bNewTerm);
      if( pSeg->pLeaf==0 || bNewTerm 
       || fts5MultiIterAdvanceRowid(pIter, iFirst, &pSeg)
      ){
        fts5MultiIterAdvanced(p, pIter, iFirst, 1);
        fts5MultiIterSetEof(pIter);
        *pbNewTerm = 1;
      }else{
        *pbNewTerm = 0;
      }
      fts5AssertMultiIterSetup(p, pIter);

    }while( fts5MultiIterIsEmpty(p, pIter) );
  }
}

static void fts5IterSetOutputs_Noop(Fts5Iter *pUnused1, Fts5SegIter *pUnused2){
  UNUSED_PARAM2(pUnused1, pUnused2);
}

static Fts5Iter *fts5MultiIterAlloc(
  Fts5Index *p,                   /* FTS5 backend to iterate within */
  int nSeg
){
  Fts5Iter *pNew;

    pNew->pIndex = p;
    pNew->xSetOutputs = fts5IterSetOutputs_Noop;
  }
  return pNew;
}

static void fts5PoslistCallback(
  Fts5Index *pUnused, 
  void *pContext, 
  const u8 *pChunk, int nChunk
){
  UNUSED_PARAM(pUnused);
  assert_nc( nChunk>=0 );
  if( nChunk>0 ){
    fts5BufferSafeAppendBlob((Fts5Buffer*)pContext, pChunk, nChunk);
  }
}

typedef struct PoslistCallbackCtx PoslistCallbackCtx;

  for(i=0; i<pColset->nCol; i++){
    if( pColset->aiCol[i]==iCol ) return 1;
  }
  return 0;
}

static void fts5PoslistOffsetsCallback(
  Fts5Index *pUnused, 
  void *pContext, 
  const u8 *pChunk, int nChunk
){
  PoslistOffsetsCtx *pCtx = (PoslistOffsetsCtx*)pContext;
  UNUSED_PARAM(pUnused);
  assert_nc( nChunk>=0 );
  if( nChunk>0 ){
    int i = 0;
    while( i<nChunk ){
      int iVal;
      i += fts5GetVarint32(&pChunk[i], iVal);
      iVal += pCtx->iRead - 2;
      pCtx->iRead = iVal;
      if( fts5IndexColsetTest(pCtx->pColset, iVal) ){
        fts5BufferSafeAppendVarint(pCtx->pBuf, iVal + 2 - pCtx->iWrite);
        pCtx->iWrite = iVal;
      }
    }
  }
}

static void fts5PoslistFilterCallback(
  Fts5Index *pUnused,
  void *pContext, 
  const u8 *pChunk, int nChunk
){
  PoslistCallbackCtx *pCtx = (PoslistCallbackCtx*)pContext;
  UNUSED_PARAM(pUnused);
  assert_nc( nChunk>=0 );
  if( nChunk>0 ){
    /* Search through to find the first varint with value 1. This is the
    ** start of the next columns hits. */
    int i = 0;
    int iStart = 0;

** column filters are specified.
*/
static void fts5IterSetOutputs_Nocolset(Fts5Iter *pIter, Fts5SegIter *pSeg){
  pIter->base.iRowid = pSeg->iRowid;
  pIter->base.nData = pSeg->nPos;

  assert( pIter->pIndex->pConfig->eDetail!=FTS5_DETAIL_NONE );
  assert( pIter->pColset==0 );

  if( pSeg->iLeafOffset+pSeg->nPos<=pSeg->pLeaf->szLeaf ){
    /* All data is stored on the current page. Populate the output 
    ** variables to point into the body of the page object. */
    pIter->base.pData = &pSeg->pLeaf->p[pSeg->iLeafOffset];
  }else{
    /* The data is distributed over two or more pages. Copy it into the

static void fts5IterSetOutputCb(int *pRc, Fts5Iter *pIter){
  if( *pRc==SQLITE_OK ){
    Fts5Config *pConfig = pIter->pIndex->pConfig;
    if( pConfig->eDetail==FTS5_DETAIL_NONE ){
      pIter->xSetOutputs = fts5IterSetOutputs_None;
    }

    else if( pIter->pColset==0 ){
      pIter->xSetOutputs = fts5IterSetOutputs_Nocolset;
    }

    else if( pConfig->eDetail==FTS5_DETAIL_FULL ){
      pIter->xSetOutputs = fts5IterSetOutputs_Full;
    }

  int iLevel,                     /* Level to iterate (-1 for all) */
  int nSegment,                   /* Number of segments to merge (iLevel>=0) */
  Fts5Iter **ppOut                /* New object */
){
  int nSeg = 0;                   /* Number of segment-iters in use */
  int iIter = 0;                  /* */
  int iSeg;                       /* Used to iterate through segments */

  Fts5StructureLevel *pLvl;
  Fts5Iter *pNew;

  assert( (pTerm==0 && nTerm==0) || iLevel<0 );

  /* Allocate space for the new multi-seg-iterator. */
  if( p->rc==SQLITE_OK ){

      for(pLvl=&pStruct->aLevel[0]; pLvl<pEnd; pLvl++){
        for(iSeg=pLvl->nSeg-1; iSeg>=0; iSeg--){
          Fts5StructureSegment *pSeg = &pLvl->aSeg[iSeg];
          Fts5SegIter *pIter = &pNew->aSeg[iIter++];
          if( pTerm==0 ){
            fts5SegIterInit(p, pSeg, pIter);
          }else{
            fts5SegIterSeekInit(p, pTerm, nTerm, flags, pSeg, pIter);
          }
        }
      }
    }else{
      pLvl = &pStruct->aLevel[iLevel];
      for(iSeg=nSeg-1; iSeg>=0; iSeg--){
        fts5SegIterInit(p, &pLvl->aSeg[iSeg], &pNew->aSeg[iIter++]);

      fts5MultiIterNext(p, pNew, 0, 0);
    }else if( pNew->base.bEof==0 ){
      Fts5SegIter *pSeg = &pNew->aSeg[pNew->aFirst[1].iFirst];
      pNew->xSetOutputs(pNew, pSeg);
    }

  }else{
    fts5MultiIterFree(pNew);
    *ppOut = 0;
  }


}

/*
** Create an Fts5Iter that iterates through the doclist provided
** as the second argument.
*/
static void fts5MultiIterNew2(
  Fts5Index *p,                   /* FTS5 backend to iterate within */
  Fts5Data *pData,                /* Doclist to iterate through */
  int bDesc,                      /* True for descending rowid order */
  Fts5Iter **ppOut                /* New object */
){
  Fts5Iter *pNew;
  pNew = fts5MultiIterAlloc(p, 2);
  if( pNew ){
    Fts5SegIter *pIter = &pNew->aSeg[1];


    pIter->flags = FTS5_SEGITER_ONETERM;
    if( pData->szLeaf>0 ){
      pIter->pLeaf = pData;
      pIter->iLeafOffset = fts5GetVarint(pData->p, (u64*)&pIter->iRowid);
      pIter->iEndofDoclist = pData->nn;
      pNew->aFirst[1].iFirst = 1;
      if( bDesc ){

  if( p->pHash ){
    sqlite3Fts5HashClear(p->pHash);
    p->nPendingData = 0;
  }
}

/*
** Return the size of the prefix, in bytes, that buffer 
** (pNew/<length-unknown>) shares with buffer (pOld/nOld).
**
** Buffer (pNew/<length-unknown>) is guaranteed to be greater 
** than buffer (pOld/nOld).
*/
static int fts5PrefixCompress(int nOld, const u8 *pOld, const u8 *pNew){



  int i;

  for(i=0; i<nOld; i++){
    if( pOld[i]!=pNew[i] ) break;
  }
  return i;
}

static void fts5WriteDlidxClear(

      ** Usually, the previous term is available in pPage->term. The exception
      ** is if this is the first term written in an incremental-merge step.
      ** In this case the previous term is not available, so just write a
      ** copy of (pTerm/nTerm) into the parent node. This is slightly
      ** inefficient, but still correct.  */
      int n = nTerm;
      if( pPage->term.n ){
        n = 1 + fts5PrefixCompress(pPage->term.n, pPage->term.p, pTerm);
      }
      fts5WriteBtreeTerm(p, pWriter, n, pTerm);
      pPage = &pWriter->writer;
    }
  }else{
    nPrefix = fts5PrefixCompress(pPage->term.n, pPage->term.p, pTerm);
    fts5BufferAppendVarint(&p->rc, &pPage->buf, nPrefix);
  }

  /* Append the number of bytes of new data, then the term data itself
  ** to the page. */
  fts5BufferAppendVarint(&p->rc, &pPage->buf, nTerm - nPrefix);
  fts5BufferAppendBlob(&p->rc, &pPage->buf, nTerm - nPrefix, &pTerm[nPrefix]);

    }
  }else{
    assert( pSeg->pgnoLast>0 );
    fts5TrimSegments(p, pIter);
    pLvl->nMerge = nInput;
  }

  fts5MultiIterFree(pIter);
  fts5BufferFree(&term);
  if( pnRem ) *pnRem -= writer.nLeafWritten;
}

/*
** Do up to nPg pages of automerge work on the index.
*/

  return fts5IndexReturn(p);
}

static void fts5AppendRowid(
  Fts5Index *p,
  i64 iDelta,
  Fts5Iter *pUnused,
  Fts5Buffer *pBuf
){
  UNUSED_PARAM(pUnused);
  fts5BufferAppendVarint(&p->rc, pBuf, iDelta);
}

static void fts5AppendPoslist(
  Fts5Index *p,
  i64 iDelta,
  Fts5Iter *pMulti,

*/
static void fts5MergePrefixLists(
  Fts5Index *p,                   /* FTS5 backend object */
  Fts5Buffer *p1,                 /* First list to merge */
  Fts5Buffer *p2                  /* Second list to merge */
){
  if( p2->n ){



    i64 iLastRowid = 0;
    Fts5DoclistIter i1;
    Fts5DoclistIter i2;
    Fts5Buffer out = {0, 0, 0};
    Fts5Buffer tmp = {0, 0, 0};

    if( sqlite3Fts5BufferSize(&p->rc, &out, p1->n + p2->n) ) return;
    fts5DoclistIterInit(p1, &i1);
    fts5DoclistIterInit(p2, &i2);

    while( 1 ){

      if( i1.iRowid<i2.iRowid ){
        /* Copy entry from i1 */
        fts5MergeAppendDocid(&out, iLastRowid, i1.iRowid);
        fts5BufferSafeAppendBlob(&out, i1.aPoslist, i1.nPoslist+i1.nSize);
        fts5DoclistIterNext(&i1);
        if( i1.aPoslist==0 ) break;
      }
      else if( i2.iRowid!=i1.iRowid ){
        /* Copy entry from i2 */
        fts5MergeAppendDocid(&out, iLastRowid, i2.iRowid);
        fts5BufferSafeAppendBlob(&out, i2.aPoslist, i2.nPoslist+i2.nSize);
        fts5DoclistIterNext(&i2);
        if( i2.aPoslist==0 ) break;
      }
      else{
        /* Merge the two position lists. */ 
        i64 iPos1 = 0;
        i64 iPos2 = 0;
        int iOff1 = 0;
        int iOff2 = 0;
        u8 *a1 = &i1.aPoslist[i1.nSize];
        u8 *a2 = &i2.aPoslist[i2.nSize];

        i64 iPrev = 0;
        Fts5PoslistWriter writer;
        memset(&writer, 0, sizeof(writer));


        fts5MergeAppendDocid(&out, iLastRowid, i2.iRowid);
        fts5BufferZero(&tmp);
        sqlite3Fts5BufferSize(&p->rc, &tmp, i1.nPoslist + i2.nPoslist);
        if( p->rc ) break;

        sqlite3Fts5PoslistNext64(a1, i1.nPoslist, &iOff1, &iPos1);
        sqlite3Fts5PoslistNext64(a2, i2.nPoslist, &iOff2, &iPos2);
        assert( iPos1>=0 && iPos2>=0 );



        if( iPos1<iPos2 ){
          sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, iPos1);
          sqlite3Fts5PoslistNext64(a1, i1.nPoslist, &iOff1, &iPos1);
        }else{
          sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, iPos2);
          sqlite3Fts5PoslistNext64(a2, i2.nPoslist, &iOff2, &iPos2);
        }

        if( iPos1>=0 && iPos2>=0 ){
          while( 1 ){
            if( iPos1<iPos2 ){
              if( iPos1!=iPrev ){
                sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, iPos1);
              }
              sqlite3Fts5PoslistNext64(a1, i1.nPoslist, &iOff1, &iPos1);
              if( iPos1<0 ) break;
            }else{
              assert( iPos2!=iPrev );
              sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, iPos2);
              sqlite3Fts5PoslistNext64(a2, i2.nPoslist, &iOff2, &iPos2);
              if( iPos2<0 ) break;
            }
          }
        }

        if( iPos1>=0 ){
          if( iPos1!=iPrev ){
            sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, iPos1);

          }
          fts5BufferSafeAppendBlob(&tmp, &a1[iOff1], i1.nPoslist-iOff1);
        }else{
          assert( iPos2>=0 && iPos2!=iPrev );
          sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, iPos2);
          fts5BufferSafeAppendBlob(&tmp, &a2[iOff2], i2.nPoslist-iOff2);
        }

        /* WRITEPOSLISTSIZE */
        fts5BufferSafeAppendVarint(&out, tmp.n * 2);
        fts5BufferSafeAppendBlob(&out, tmp.p, tmp.n);
        fts5DoclistIterNext(&i1);
        fts5DoclistIterNext(&i2);
        if( i1.aPoslist==0 || i2.aPoslist==0 ) break;
      }
    }

    if( i1.aPoslist ){
      fts5MergeAppendDocid(&out, iLastRowid, i1.iRowid);
      fts5BufferSafeAppendBlob(&out, i1.aPoslist, i1.aEof - i1.aPoslist);
    }
    else if( i2.aPoslist ){
      fts5MergeAppendDocid(&out, iLastRowid, i2.iRowid);
      fts5BufferSafeAppendBlob(&out, i2.aPoslist, i2.aEof - i2.aPoslist);
    }


    fts5BufferSet(&p->rc, p1, out.n, out.p);
    fts5BufferFree(&tmp);
    fts5BufferFree(&out);

  }
}

static void fts5SetupPrefixIter(
  Fts5Index *p,                   /* Index to read from */
  int bDesc,                      /* True for "ORDER BY rowid DESC" */
  const u8 *pToken,               /* Buffer containing prefix to match */

    for(i=0; i<nBuf; i++){
      if( p->rc==SQLITE_OK ){
        xMerge(p, &doclist, &aBuf[i]);
      }
      fts5BufferFree(&aBuf[i]);
    }
    fts5MultiIterFree(p1);

    pData = fts5IdxMalloc(p, sizeof(Fts5Data) + doclist.n);
    if( pData ){
      pData->p = (u8*)&pData[1];
      pData->nn = pData->szLeaf = doclist.n;
      memcpy(pData->p, doclist.p, doclist.n);
      fts5MultiIterNew2(p, pData, bDesc, ppIter);

** to the database. Additionally, assume that the contents of the %_data
** table may have changed on disk. So any in-memory caches of %_data 
** records must be invalidated.
*/
int sqlite3Fts5IndexRollback(Fts5Index *p){
  fts5CloseReader(p);
  fts5IndexDiscardData(p);
  /* assert( p->rc==SQLITE_OK ); */
  return SQLITE_OK;
}

/*
** The %_data table is completely empty when this function is called. This
** function populates it with the initial structure objects for each index,
** and the initial version of the "averages" record (a zero-byte blob).

        fts5StructureRelease(pStruct);
      }
    }else{
      /* Scan multiple terms in the main index */
      int bDesc = (flags & FTS5INDEX_QUERY_DESC)!=0;
      buf.p[0] = FTS5_MAIN_PREFIX;
      fts5SetupPrefixIter(p, bDesc, buf.p, nToken+1, pColset, &pRet);
      assert( p->rc!=SQLITE_OK || pRet->pColset==0 );
      fts5IterSetOutputCb(&p->rc, pRet);
      if( p->rc==SQLITE_OK ){
        Fts5SegIter *pSeg = &pRet->aSeg[pRet->aFirst[1].iFirst];
        if( pSeg->pLeaf ) pRet->xSetOutputs(pRet, pSeg);
      }
    }

    if( p->rc ){
      sqlite3Fts5IterClose(&pRet->base);
      pRet = 0;
      fts5CloseReader(p);

/*
** Close an iterator opened by an earlier call to sqlite3Fts5IndexQuery().
*/
void sqlite3Fts5IterClose(Fts5IndexIter *pIndexIter){
  if( pIndexIter ){
    Fts5Iter *pIter = (Fts5Iter*)pIndexIter;
    Fts5Index *pIndex = pIter->pIndex;
    fts5MultiIterFree(pIter);
    fts5CloseReader(pIndex);
  }
}

/*
** Read and decode the "averages" record from the database. 
**

        int iTokOff = FTS5_POS2OFFSET(iPos);
        cksum2 ^= sqlite3Fts5IndexEntryCksum(iRowid, iCol, iTokOff, -1, z, n);
      }
    }
  }
  fts5TestTerm(p, &term, 0, 0, cksum2, &cksum3);

  fts5MultiIterFree(pIter);
  if( p->rc==SQLITE_OK && cksum!=cksum2 ) p->rc = FTS5_CORRUPT;

  fts5StructureRelease(pStruct);
#ifdef SQLITE_DEBUG
  fts5BufferFree(&term);
#endif
  fts5BufferFree(&poslist);

  u8 *a = 0;
  Fts5Buffer s;                   /* Build up text to return here */
  int rc = SQLITE_OK;             /* Return code */
  int nSpace = 0;
  int eDetailNone = (sqlite3_user_data(pCtx)!=0);

  assert( nArg==2 );
  UNUSED_PARAM(nArg);
  memset(&s, 0, sizeof(Fts5Buffer));
  iRowid = sqlite3_value_int64(apVal[0]);

  /* Make a copy of the second argument (a blob) in aBlob[]. The aBlob[]
  ** copy is followed by FTS5_DATA_ZERO_PADDING 0x00 bytes, which prevents
  ** buffer overreads even if the record is corrupt.  */
  n = sqlite3_value_bytes(apVal[1]);

**
** Return SQLITE_OK if nothing goes wrong.  SQLITE_OK is returned
** even if we reach end-of-file.  The fts5EofMethod() will be called
** subsequently to determine whether or not an EOF was hit.
*/
static int fts5NextMethod(sqlite3_vtab_cursor *pCursor){
  Fts5Cursor *pCsr = (Fts5Cursor*)pCursor;
  int rc;

  assert( (pCsr->ePlan<3)==
          (pCsr->ePlan==FTS5_PLAN_MATCH || pCsr->ePlan==FTS5_PLAN_SOURCE) 
  );
  assert( !CsrFlagTest(pCsr, FTS5CSR_EOF) );

  if( pCsr->ePlan<3 ){
    int bSkip = 0;
    if( (rc = fts5CursorReseek(pCsr, &bSkip)) || bSkip ) return rc;
    rc = sqlite3Fts5ExprNext(pCsr->pExpr, pCsr->iLastRowid);
    CsrFlagSet(pCsr, sqlite3Fts5ExprEof(pCsr->pExpr));
    fts5CsrNewrow(pCsr);
  }else{
    switch( pCsr->ePlan ){
      case FTS5_PLAN_SPECIAL: {
        CsrFlagSet(pCsr, FTS5CSR_EOF);
        rc = SQLITE_OK;
        break;
      }
  
      case FTS5_PLAN_SORTED_MATCH: {
        rc = fts5SorterNext(pCsr);
        break;
      }

**   1. Full-text search using a MATCH operator.
**   2. A by-rowid lookup.
**   3. A full-table scan.
*/
static int fts5FilterMethod(
  sqlite3_vtab_cursor *pCursor,   /* The cursor used for this query */
  int idxNum,                     /* Strategy index */
  const char *zUnused,            /* Unused */
  int nVal,                       /* Number of elements in apVal */
  sqlite3_value **apVal           /* Arguments for the indexing scheme */
){
  Fts5Table *pTab = (Fts5Table*)(pCursor->pVtab);
  Fts5Config *pConfig = pTab->pConfig;
  Fts5Cursor *pCsr = (Fts5Cursor*)pCursor;
  int rc = SQLITE_OK;             /* Error code */
  int iVal = 0;                   /* Counter for apVal[] */
  int bDesc;                      /* True if ORDER BY [rank|rowid] DESC */
  int bOrderByRank;               /* True if ORDER BY rank */
  sqlite3_value *pMatch = 0;      /* <tbl> MATCH ? expression (or NULL) */
  sqlite3_value *pRank = 0;       /* rank MATCH ? expression (or NULL) */
  sqlite3_value *pRowidEq = 0;    /* rowid = ? expression (or NULL) */
  sqlite3_value *pRowidLe = 0;    /* rowid <= ? expression (or NULL) */
  sqlite3_value *pRowidGe = 0;    /* rowid >= ? expression (or NULL) */
  char **pzErrmsg = pConfig->pzErrmsg;

  UNUSED_PARAM(zUnused);
  UNUSED_PARAM(nVal);

  if( pCsr->ePlan ){
    fts5FreeCursorComponents(pCsr);
    memset(&pCsr->ePlan, 0, sizeof(Fts5Cursor) - ((u8*)&pCsr->ePlan-(u8*)pCsr));
  }

  assert( pCsr->pStmt==0 );

    }
  }
  return rc;
}

static int fts5SpecialDelete(
  Fts5Table *pTab, 
  sqlite3_value **apVal

){
  int rc = SQLITE_OK;
  int eType1 = sqlite3_value_type(apVal[1]);
  if( eType1==SQLITE_INTEGER ){
    sqlite3_int64 iDel = sqlite3_value_int64(apVal[1]);
    rc = sqlite3Fts5StorageDelete(pTab->pStorage, iDel, &apVal[2]);
  }

   && sqlite3_value_type(apVal[2+pConfig->nCol])!=SQLITE_NULL 
  ){
    /* A "special" INSERT op. These are handled separately. */
    const char *z = (const char*)sqlite3_value_text(apVal[2+pConfig->nCol]);
    if( pConfig->eContent!=FTS5_CONTENT_NORMAL 
      && 0==sqlite3_stricmp("delete", z) 
    ){
      rc = fts5SpecialDelete(pTab, apVal);
    }else{
      rc = fts5SpecialInsert(pTab, z, apVal[2 + pConfig->nCol + 1]);
    }
  }else{
    /* A regular INSERT, UPDATE or DELETE statement. The trick here is that
    ** any conflict on the rowid value must be detected before any 
    ** modifications are made to the database file. There are 4 cases:

  return rc;
}

/*
** Implementation of xBegin() method. 
*/
static int fts5BeginMethod(sqlite3_vtab *pVtab){
  UNUSED_PARAM(pVtab);  /* Call below is a no-op for NDEBUG builds */
  fts5CheckTransactionState((Fts5Table*)pVtab, FTS5_BEGIN, 0);
  return SQLITE_OK;
}

/*
** Implementation of xCommit() method. This is a no-op. The contents of
** the pending-terms hash-table have already been flushed into the database
** by fts5SyncMethod().
*/
static int fts5CommitMethod(sqlite3_vtab *pVtab){
  UNUSED_PARAM(pVtab);  /* Call below is a no-op for NDEBUG builds */
  fts5CheckTransactionState((Fts5Table*)pVtab, FTS5_COMMIT, 0);
  return SQLITE_OK;
}

/*
** Implementation of xRollback(). Discard the contents of the pending-terms
** hash-table. Any changes made to the database are reverted by SQLite.

static sqlite3_int64 fts5ApiRowid(Fts5Context *pCtx){
  return fts5CursorRowid((Fts5Cursor*)pCtx);
}

static int fts5ColumnSizeCb(
  void *pContext,                 /* Pointer to int */
  int tflags,
  const char *pUnused,            /* Buffer containing token */
  int nUnused,                    /* Size of token in bytes */
  int iUnused1,                   /* Start offset of token */
  int iUnused2                    /* End offset of token */
){
  int *pCnt = (int*)pContext;
  UNUSED_PARAM2(pUnused, nUnused);
  UNUSED_PARAM2(iUnused1, iUnused2);
  if( (tflags & FTS5_TOKEN_COLOCATED)==0 ){
    (*pCnt)++;
  }
  return SQLITE_OK;
}

static int fts5ApiColumnSize(Fts5Context *pCtx, int iCol, int *pnToken){

    }
  }

  return pRet;
}

static void fts5ApiPhraseNext(
  Fts5Context *pUnused, 
  Fts5PhraseIter *pIter, 
  int *piCol, int *piOff
){
  UNUSED_PARAM(pUnused);
  if( pIter->a>=pIter->b ){
    *piCol = -1;
    *piOff = -1;
  }else{
    int iVal;
    pIter->a += fts5GetVarint32(pIter->a, iVal);
    if( iVal==1 ){

  Fts5Cursor *pCsr = (Fts5Cursor*)pCtx;
  Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab);
  int rc;
  Fts5Cursor *pNew = 0;

  rc = fts5OpenMethod(pCsr->base.pVtab, (sqlite3_vtab_cursor**)&pNew);
  if( rc==SQLITE_OK ){

    pNew->ePlan = FTS5_PLAN_MATCH;
    pNew->iFirstRowid = SMALLEST_INT64;
    pNew->iLastRowid = LARGEST_INT64;
    pNew->base.pVtab = (sqlite3_vtab*)pTab;
    rc = sqlite3Fts5ExprClonePhrase(pCsr->pExpr, iPhrase, &pNew->pExpr);
  }

  if( rc==SQLITE_OK ){
    for(rc = fts5CursorFirst(pTab, pNew, 0);
        rc==SQLITE_OK && CsrFlagTest(pNew, FTS5CSR_EOF)==0;
        rc = fts5NextMethod((sqlite3_vtab_cursor*)pNew)
    ){

/*
** This routine implements the xFindFunction method for the FTS3
** virtual table.
*/
static int fts5FindFunctionMethod(
  sqlite3_vtab *pVtab,            /* Virtual table handle */
  int nUnused,                    /* Number of SQL function arguments */
  const char *zName,              /* Name of SQL function */
  void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), /* OUT: Result */
  void **ppArg                    /* OUT: User data for *pxFunc */
){
  Fts5Table *pTab = (Fts5Table*)pVtab;
  Fts5Auxiliary *pAux;

  UNUSED_PARAM(nUnused);
  pAux = fts5FindAuxiliary(pTab, zName);
  if( pAux ){
    *pxFunc = fts5ApiCallback;
    *ppArg = (void*)pAux;
    return 1;
  }

/*
** The xSavepoint() method.
**
** Flush the contents of the pending-terms table to disk.
*/
static int fts5SavepointMethod(sqlite3_vtab *pVtab, int iSavepoint){
  Fts5Table *pTab = (Fts5Table*)pVtab;
  UNUSED_PARAM(iSavepoint);  /* Call below is a no-op for NDEBUG builds */
  fts5CheckTransactionState(pTab, FTS5_SAVEPOINT, iSavepoint);
  fts5TripCursors(pTab);
  return sqlite3Fts5StorageSync(pTab->pStorage, 0);
}

/*
** The xRelease() method.
**
** This is a no-op.
*/
static int fts5ReleaseMethod(sqlite3_vtab *pVtab, int iSavepoint){
  Fts5Table *pTab = (Fts5Table*)pVtab;
  UNUSED_PARAM(iSavepoint);  /* Call below is a no-op for NDEBUG builds */
  fts5CheckTransactionState(pTab, FTS5_RELEASE, iSavepoint);
  fts5TripCursors(pTab);
  return sqlite3Fts5StorageSync(pTab->pStorage, 0);
}

/*
** The xRollbackTo() method.
**
** Discard the contents of the pending terms table.
*/
static int fts5RollbackToMethod(sqlite3_vtab *pVtab, int iSavepoint){
  Fts5Table *pTab = (Fts5Table*)pVtab;
  UNUSED_PARAM(iSavepoint);  /* Call below is a no-op for NDEBUG builds */
  fts5CheckTransactionState(pTab, FTS5_ROLLBACKTO, iSavepoint);
  fts5TripCursors(pTab);
  return sqlite3Fts5StorageRollback(pTab->pStorage);
}

/*
** Register a new auxiliary function with global context pGlobal.

  sqlite3_free(pGlobal);
}

static void fts5Fts5Func(
  sqlite3_context *pCtx,          /* Function call context */
  int nArg,                       /* Number of args */
  sqlite3_value **apUnused        /* Function arguments */
){
  Fts5Global *pGlobal = (Fts5Global*)sqlite3_user_data(pCtx);
  char buf[8];
  UNUSED_PARAM2(nArg, apUnused);
  assert( nArg==0 );
  assert( sizeof(buf)>=sizeof(pGlobal) );
  memcpy(buf, (void*)&pGlobal, sizeof(pGlobal));
  sqlite3_result_blob(pCtx, buf, sizeof(pGlobal), SQLITE_TRANSIENT);
}

/*
** Implementation of fts5_source_id() function.
*/
static void fts5SourceIdFunc(
  sqlite3_context *pCtx,          /* Function call context */
  int nArg,                       /* Number of args */
  sqlite3_value **apUnused        /* Function arguments */
){
  assert( nArg==0 );
  UNUSED_PARAM2(nArg, apUnused);
  sqlite3_result_text(pCtx, "--FTS5-SOURCE-ID--", -1, SQLITE_TRANSIENT);
}

static int fts5Init(sqlite3 *db){
  static const sqlite3_module fts5Mod = {
    /* iVersion      */ 2,
    /* xCreate       */ fts5CreateMethod,

** Tokenization callback used when inserting tokens into the FTS index.
*/
static int fts5StorageInsertCallback(
  void *pContext,                 /* Pointer to Fts5InsertCtx object */
  int tflags,
  const char *pToken,             /* Buffer containing token */
  int nToken,                     /* Size of token in bytes */
  int iUnused1,                   /* Start offset of token */
  int iUnused2                    /* End offset of token */
){
  Fts5InsertCtx *pCtx = (Fts5InsertCtx*)pContext;
  Fts5Index *pIdx = pCtx->pStorage->pIndex;
  UNUSED_PARAM2(iUnused1, iUnused2);
  if( (tflags & FTS5_TOKEN_COLOCATED)==0 || pCtx->szCol==0 ){
    pCtx->szCol++;
  }
  return sqlite3Fts5IndexWrite(pIdx, pCtx->iCol, pCtx->szCol-1, pToken, nToken);
}

/*

** Tokenization callback used by integrity check.
*/
static int fts5StorageIntegrityCallback(
  void *pContext,                 /* Pointer to Fts5IntegrityCtx object */
  int tflags,
  const char *pToken,             /* Buffer containing token */
  int nToken,                     /* Size of token in bytes */
  int iUnused1,                   /* Start offset of token */
  int iUnused2                    /* End offset of token */
){
  Fts5IntegrityCtx *pCtx = (Fts5IntegrityCtx*)pContext;
  Fts5Termset *pTermset = pCtx->pTermset;
  int bPresent;
  int ii;
  int rc = SQLITE_OK;
  int iPos;
  int iCol;

  UNUSED_PARAM2(iUnused1, iUnused2);

  if( (tflags & FTS5_TOKEN_COLOCATED)==0 || pCtx->szCol==0 ){
    pCtx->szCol++;
  }

  switch( pCtx->pConfig->eDetail ){
    case FTS5_DETAIL_FULL:

  sqlite3_free(p);
}

/*
** Create an "ascii" tokenizer.
*/
static int fts5AsciiCreate(
  void *pUnused, 
  const char **azArg, int nArg,
  Fts5Tokenizer **ppOut
){
  int rc = SQLITE_OK;
  AsciiTokenizer *p = 0;
  UNUSED_PARAM(pUnused);
  if( nArg%2 ){
    rc = SQLITE_ERROR;
  }else{
    p = sqlite3_malloc(sizeof(AsciiTokenizer));
    if( p==0 ){
      rc = SQLITE_NOMEM;
    }else{

/*
** Tokenize some text using the ascii tokenizer.
*/
static int fts5AsciiTokenize(
  Fts5Tokenizer *pTokenizer,
  void *pCtx,
  int iUnused,
  const char *pText, int nText,
  int (*xToken)(void*, int, const char*, int nToken, int iStart, int iEnd)
){
  AsciiTokenizer *p = (AsciiTokenizer*)pTokenizer;
  int rc = SQLITE_OK;
  int ie;
  int is = 0;

  char aFold[64];
  int nFold = sizeof(aFold);
  char *pFold = aFold;
  unsigned char *a = p->aTokenChar;

  UNUSED_PARAM(iUnused);

  while( is<nText && rc==SQLITE_OK ){
    int nByte;

    /* Skip any leading divider characters. */
    while( is<nText && ((pText[is]&0x80)==0 && a[(int)pText[is]]==0) ){
      is++;

  return;
}

/*
** Create a "unicode61" tokenizer.
*/
static int fts5UnicodeCreate(
  void *pUnused, 
  const char **azArg, int nArg,
  Fts5Tokenizer **ppOut
){
  int rc = SQLITE_OK;             /* Return code */
  Unicode61Tokenizer *p = 0;      /* New tokenizer object */ 

  UNUSED_PARAM(pUnused);

  if( nArg%2 ){
    rc = SQLITE_ERROR;
  }else{
    p = (Unicode61Tokenizer*)sqlite3_malloc(sizeof(Unicode61Tokenizer));
    if( p ){
      int i;

  assert( (sqlite3Fts5UnicodeIsalnum(iCode) & 0xFFFFFFFE)==0 );
  return sqlite3Fts5UnicodeIsalnum(iCode) ^ fts5UnicodeIsException(p, iCode);
}

static int fts5UnicodeTokenize(
  Fts5Tokenizer *pTokenizer,
  void *pCtx,
  int iUnused,
  const char *pText, int nText,
  int (*xToken)(void*, int, const char*, int nToken, int iStart, int iEnd)
){
  Unicode61Tokenizer *p = (Unicode61Tokenizer*)pTokenizer;
  int rc = SQLITE_OK;
  unsigned char *a = p->aTokenChar;

  unsigned char *zTerm = (unsigned char*)&pText[nText];
  unsigned char *zCsr = (unsigned char *)pText;

  /* Output buffer */
  char *aFold = p->aFold;
  int nFold = p->nFold;
  const char *pEnd = &aFold[nFold-6];

  UNUSED_PARAM(iUnused);

  /* Each iteration of this loop gobbles up a contiguous run of separators,
  ** then the next token.  */
  while( rc==SQLITE_OK ){
    int iCode;                    /* non-ASCII codepoint read from input */
    char *zOut = aFold;
    int is;

    0x07D9140B, 0x07DA0046, 0x07DC0074, 0x38000401, 0x38008060,
    0x380400F0,
  };
  static const unsigned int aAscii[4] = {
    0xFFFFFFFF, 0xFC00FFFF, 0xF8000001, 0xF8000001,
  };

  if( (unsigned int)c<128 ){
    return ( (aAscii[c >> 5] & (1 << (c & 0x001F)))==0 );
  }else if( (unsigned int)c<(1<<22) ){
    unsigned int key = (((unsigned int)c)<<10) | 0x000003FF;
    int iRes = 0;
    int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
    int iLo = 0;
    while( iHi>=iLo ){
      int iTest = (iHi + iLo) / 2;
      if( key >= aEntry[iTest] ){

    return 2;
  }
  return fts5PutVarint64(p,v);
}


int sqlite3Fts5GetVarintLen(u32 iVal){
#if 0
  if( iVal<(1 << 7 ) ) return 1;
#endif
  assert( iVal>=(1 << 7) );
  if( iVal<(1 << 14) ) return 2;
  if( iVal<(1 << 21) ) return 3;
  if( iVal<(1 << 28) ) return 4;
  return 5;
}

  return fts5VocabInitVtab(db, pAux, argc, argv, ppVtab, pzErr);
}

/* 
** Implementation of the xBestIndex method.
*/
static int fts5VocabBestIndexMethod(
  sqlite3_vtab *pUnused,
  sqlite3_index_info *pInfo
){
  int i;
  int iTermEq = -1;
  int iTermGe = -1;
  int iTermLe = -1;
  int idxNum = 0;
  int nArg = 0;

  UNUSED_PARAM(pUnused);

  for(i=0; i<pInfo->nConstraint; i++){
    struct sqlite3_index_constraint *p = &pInfo->aConstraint[i];
    if( p->usable==0 ) continue;
    if( p->iColumn==0 ){          /* term column */
      if( p->op==SQLITE_INDEX_CONSTRAINT_EQ ) iTermEq = i;
      if( p->op==SQLITE_INDEX_CONSTRAINT_LE ) iTermLe = i;

/*
** This is the xFilter implementation for the virtual table.
*/
static int fts5VocabFilterMethod(
  sqlite3_vtab_cursor *pCursor,   /* The cursor used for this query */
  int idxNum,                     /* Strategy index */
  const char *zUnused,            /* Unused */
  int nUnused,                    /* Number of elements in apVal */
  sqlite3_value **apVal           /* Arguments for the indexing scheme */
){
  Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor;
  int rc = SQLITE_OK;

  int iVal = 0;
  int f = FTS5INDEX_QUERY_SCAN;
  const char *zTerm = 0;
  int nTerm = 0;

  sqlite3_value *pEq = 0;
  sqlite3_value *pGe = 0;
  sqlite3_value *pLe = 0;

  UNUSED_PARAM2(zUnused, nUnused);

  fts5VocabResetCursor(pCsr);
  if( idxNum & FTS5_VOCAB_TERM_EQ ) pEq = apVal[iVal++];
  if( idxNum & FTS5_VOCAB_TERM_GE ) pGe = apVal[iVal++];
  if( idxNum & FTS5_VOCAB_TERM_LE ) pLe = apVal[iVal++];

  if( pEq ){

// The generated parser function takes a 4th argument as follows:
%extra_argument {Fts5Parse *pParse}

// This code runs whenever there is a syntax error
//
%syntax_error {
  UNUSED_PARAM(yymajor); /* Silence a compiler warning */
  sqlite3Fts5ParseError(
    pParse, "fts5: syntax error near \"%.*s\"",TOKEN.n,TOKEN.p
  );
}
%stack_overflow {
  UNUSED_PARAM(yypMinor); /* Silence a compiler warning */
  sqlite3Fts5ParseError(pParse, "fts5: parser stack overflow");
}

// The name of the generated procedure that implements the parser
// is as follows:
%name sqlite3Fts5Parser

// The following text is included near the beginning of the C source

# 2014 June 17
#
# 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 FTS5 module.
#
# More specifically, the focus is on testing prefix queries, both with and
# without prefix indexes.
#

source [file join [file dirname [info script]] fts5_common.tcl]
set testprefix fts5ad

# If SQLITE_ENABLE_FTS5 is defined, omit this file.
ifcapable !fts5 {

  5 {detail=',1'}
  6 {detail=''}
} {
  set res [list 1 {malformed detail=... directive}]
  do_catchsql_test 11.$tn "CREATE VIRTUAL TABLE f1 USING fts5(x, $opt)" $res
}

do_catchsql_test 12.1 {
  INSERT INTO t1(t1, rank) VALUES('rank', NULL);;
} {1 {SQL logic error or missing database}}

finish_test

    WHERE id>100;
}
do_catchsql_test 6.3.5 {
  INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {database disk image is malformed}}




#------------------------------------------------------------------------
#

reset_db
proc rnddoc {n} {
  set map [list a b c d]
  set doc [list]
  for {set i 0} {$i < $n} {incr i} {
    lappend doc "x[lindex $map [expr int(rand()*4)]]"
  }

    db eval {DELETE FROM t5_data WHERE rowid = $i}
    set r [catchsql { INSERT INTO t5(t5) VALUES('integrity-check')} ]
    if {$r != "1 {database disk image is malformed}"} { error $r }
    db eval ROLLBACK  
  }
} {}

}

#------------------------------------------------------------------------
# Corruption within the structure record.
#
reset_db
do_execsql_test 8.1 {
  CREATE VIRTUAL TABLE t1 USING fts5(x, y);
  INSERT INTO t1 VALUES('one', 'two');
}

do_test 9.1.1 {
  set    blob "12345678"    ;# cookie
  append blob "0105"        ;# 1 level, total of 5 segments
  append blob "06"          ;# write counter
  append blob "0002"        ;# first level has 0 segments merging, 2 other.
  append blob "450108"      ;# first segment
  execsql "REPLACE INTO t1_data VALUES(10, X'$blob')"
} {}
do_catchsql_test 9.1.2 {
  SELECT * FROM t1('one AND two');
} {1 {database disk image is malformed}}

do_test 9.2.1 {
  set    blob "12345678"    ;# cookie
  append blob "0205"        ;# 2 levels, total of 5 segments
  append blob "06"          ;# write counter
  append blob "0001"        ;# first level has 0 segments merging, 1 other.
  append blob "450108"      ;# first segment
  execsql "REPLACE INTO t1_data VALUES(10, X'$blob')"
} {}
do_catchsql_test 9.2.2 {
  SELECT * FROM t1('one AND two');
} {1 {database disk image is malformed}}

sqlite3_fts5_may_be_corrupt 0
finish_test

do_execsql_test 2.1 {
  INSERT INTO t2(t2) VALUES('integrity-check');
}

do_execsql_test 2.2 {
  SELECT fts5_test_poslist(t2) FROM t2('aa');
} {0.0.0}

do_execsql_test 2.3 {
  SELECT fts5_test_collist(t2) FROM t2('aa');
} {0.0}

set ::pc 0
#puts [nearset {{ax bx cx}} -pc ::pc -near 10 -- b*]
#exit

#-------------------------------------------------------------------------
# Check that the xInstCount, xInst, xPhraseFirst and xPhraseNext APIs

    lappend doc [lindex $vocab $j]
  }
  return $doc
}

foreach_detail_mode $testprefix {

  set vocab [build_vocab1]
  db func r random_doc 
  
  do_execsql_test 1.0 {
    CREATE VIRTUAL TABLE eee USING fts5(e, ee, detail=%DETAIL%);
    BEGIN;
      WITH ii(i) AS (SELECT 1 UNION ALL SELECT i+1 FROM ii WHERE i<100)
      INSERT INTO eee SELECT r($vocab, 5), r($vocab, 7) FROM ii;
      INSERT INTO eee(eee) VALUES('integrity-check');
    COMMIT;
    INSERT INTO eee(eee) VALUES('integrity-check');
  }
  
  set hash [sqlite3_fts5_token_hash 1024 xyz]
  set vocab [build_vocab1 -prefix xyz -hash $hash]
  lappend vocab xyz
  
  do_execsql_test 1.1 {
    CREATE VIRTUAL TABLE vocab USING fts5vocab(eee, 'row'); 
    BEGIN;
  }
  do_test 1.2 {
    for {set i 1} {$i <= 100} {incr i} {
      execsql { INSERT INTO eee VALUES( r($vocab, 5), r($vocab, 7) ) }
    }
  } {}
    
  do_test 1.3 {
    db eval { SELECT term, doc FROM vocab } {
      set nRow [db one {SELECT count(*) FROM eee WHERE eee MATCH $term}]
      if {$nRow != $doc} {
        error "term=$term fts5vocab=$doc cnt=$nRow"
      }
    }
    set {} {}
  } {}
  
  do_execsql_test 1.4 {
    COMMIT;
    INSERT INTO eee(eee) VALUES('integrity-check');
  }

  #-----------------------------------------------------------------------
  # Add a small and very large token with the same hash value to an
  # empty table. At one point this would provoke an asan error.
  #
  do_test 2.0 {
    set big [string repeat 12345 40]
    set hash [sqlite3_fts5_token_hash 1024 $big]
    while {1} {
      set small [random_token]
      if {[sqlite3_fts5_token_hash 1024 $small]==$hash} break
    }

    execsql { CREATE VIRTUAL TABLE t2 USING fts5(x, detail=%DETAIL%) }
breakpoint
    execsql {
      INSERT INTO t2 VALUES($small || ' ' || $big);
    }
  } {}

} ;# foreach_detail_mode

finish_test

}

#-------------------------------------------------------------------------
do_execsql_test 18.1 {
  CREATE VIRTUAL TABLE x4 USING fts5(x);
  SELECT rowid FROM x4('""');
}

#-------------------------------------------------------------------------
reset_db
do_execsql_test 19.1 {
  CREATE VIRTUAL TABLE x1 USING fts5(a,b,c);
}

do_catchsql_test 19.2 {
  SELECT * FROM x1 WHERE x1 MATCH 'c0 AND (c1 AND (c2 AND (c3 AND (c4 AND (c5 AND (c6 AND (c7 AND (c8 AND (c9 AND (c10 AND (c11 AND (c12 AND (c13 AND (c14 AND (c15 AND (c16 AND (c17 AND (c18 AND (c19 AND (c20 AND (c21 AND (c22 AND (c23 AND (c24 AND (c25 AND (c26 AND (c27 AND (c28 AND (c29 AND (c30 AND (c31 AND (c32 AND (c33 AND (c34 AND (c35 AND (c36 AND (c37 AND (c38 AND (c39 AND (c40 AND (c41 AND (c42 AND (c43 AND (c44 AND (c45 AND (c46 AND (c47 AND (c48 AND (c49 AND (c50 AND (c51 AND (c52 AND (c53 AND (c54 AND (c55 AND (c56 AND (c57 AND (c58 AND (c59 AND (c60 AND (c61 AND (c62 AND (c63 AND (c64 AND (c65 AND (c66 AND (c67 AND (c68 AND (c69 AND (c70 AND (c71 AND (c72 AND (c73 AND (c74 AND (c75 AND (c76 AND (c77 AND (c78 AND (c79 AND (c80 AND (c81 AND (c82 AND (c83 AND (c84 AND (c85 AND (c86 AND (c87 AND (c88 AND (c89 AND (c90 AND (c91 AND (c92 AND (c93 AND (c94 AND (c95 AND (c96 AND (c97 AND (c98 AND (c99 AND (c100 AND (c101 AND (c102 AND (c103 AND (c104 AND (c105 AND (c106 AND (c107 AND (c108 AND (c109 AND (c110 AND (c111 AND (c112 AND (c113 AND (c114 AND (c115 AND (c116 AND (c117 AND (c118 AND (c119 AND (c120 AND (c121 AND (c122 AND (c123 AND (c124 AND (c125 AND (c126 AND (c127 AND (c128 AND (c129 AND (c130 AND (c131 AND (c132 AND (c133 AND (c134 AND (c135 AND (c136 AND (c137 AND (c138 AND (c139 AND (c140 AND (c141 AND (c142 AND (c143 AND (c144 AND (c145 AND (c146 AND (c147 AND (c148 AND (c149 AND (c150 AND (c151 AND (c152 AND (c153 AND (c154 AND (c155 AND (c156 AND (c157 AND (c158 AND (c159 AND (c160 AND (c161 AND (c162 AND (c163 AND (c164 AND (c165 AND (c166 AND (c167 AND (c168 AND (c169 AND (c170 AND (c171 AND (c172 AND (c173 AND (c174 AND (c175 AND (c176 AND (c177 AND (c178 AND (c179 AND (c180 AND (c181 AND (c182 AND (c183 AND (c184 AND (c185 AND (c186 AND (c187 AND (c188 AND (c189 AND (c190 AND (c191 AND (c192 AND (c193 AND (c194 AND (c195 AND (c196 AND (c197 AND (c198 AND (c199 AND c200)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))';
} {1 {fts5: parser stack overflow}}

finish_test

#endif
SQLITE_EXTENSION_INIT1
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>

/* Mark a function parameter as unused, to suppress nuisance compiler
** warnings. */
#ifndef UNUSED_PARAM
# define UNUSED_PARAM(X)  (void)(X)
#endif

#ifndef LARGEST_INT64
# define LARGEST_INT64  (0xffffffff|(((sqlite3_int64)0x7fffffff)<<32))
# define SMALLEST_INT64 (((sqlite3_int64)-1) - LARGEST_INT64)
#endif

/*

*/
static void jsonArrayStep(
  sqlite3_context *ctx,
  int argc,
  sqlite3_value **argv
){
  JsonString *pStr;
  UNUSED_PARAM(argc);
  pStr = (JsonString*)sqlite3_aggregate_context(ctx, sizeof(*pStr));
  if( pStr ){
    if( pStr->zBuf==0 ){
      jsonInit(pStr, ctx);
      jsonAppendChar(pStr, '[');
    }else{
      jsonAppendChar(pStr, ',');

  sqlite3_context *ctx,
  int argc,
  sqlite3_value **argv
){
  JsonString *pStr;
  const char *z;
  u32 n;
  UNUSED_PARAM(argc);
  pStr = (JsonString*)sqlite3_aggregate_context(ctx, sizeof(*pStr));
  if( pStr ){
    if( pStr->zBuf==0 ){
      jsonInit(pStr, ctx);
      jsonAppendChar(pStr, '{');
    }else{
      jsonAppendChar(pStr, ',');

sqlite3$(EXE):	$(TOP)/src/shell.c libsqlite3.a sqlite3.h
	$(TCCX) $(READLINE_FLAGS) -o sqlite3$(EXE) $(SHELL_OPT) \
		$(TOP)/src/shell.c libsqlite3.a $(LIBREADLINE) $(TLIBS) $(THREADLIB)

sqldiff$(EXE):	$(TOP)/tool/sqldiff.c sqlite3.c sqlite3.h
	$(TCCX) -o sqldiff$(EXE) -DSQLITE_THREADSAFE=0 \
		$(TOP)/tool/sqldiff.c sqlite3.c $(TLIBS) $(THREADLIB)

srcck1$(EXE):	$(TOP)/tool/srcck1.c
	$(BCC) -o srcck1$(EXE) $(TOP)/tool/srcck1.c

sourcetest:	srcck1$(EXE) sqlite3.c
	./srcck1 sqlite3.c

fuzzershell$(EXE):	$(TOP)/tool/fuzzershell.c sqlite3.c sqlite3.h
	$(TCCX) -o fuzzershell$(EXE) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION \
	  $(FUZZERSHELL_OPT) $(TOP)/tool/fuzzershell.c sqlite3.c \
	  $(TLIBS) $(THREADLIB)

fuzzcheck$(EXE):	$(TOP)/test/fuzzcheck.c sqlite3.c sqlite3.h
	$(TCCX) -o fuzzcheck$(EXE) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION \
		-DSQLITE_ENABLE_MEMSYS5 $(FUZZCHECK_OPT) \
		$(TOP)/test/fuzzcheck.c sqlite3.c $(TLIBS) $(THREADLIB)

mptester$(EXE):	sqlite3.c $(TOP)/mptest/mptest.c
	$(TCCX) -o $@ -I. $(TOP)/mptest/mptest.c sqlite3.c \
		$(TLIBS) $(THREADLIB)

MPTEST1=./mptester$(EXE) mptest1.db $(TOP)/mptest/crash01.test --repeat 20
MPTEST2=./mptester$(EXE) mptest2.db $(TOP)/mptest/multiwrite01.test --repeat 20
mptest:	mptester$(EXE)

	$(MPTEST1) --journalmode DELETE
	$(MPTEST2) --journalmode WAL
	$(MPTEST1) --journalmode WAL
	$(MPTEST2) --journalmode PERSIST
	$(MPTEST1) --journalmode PERSIST
	$(MPTEST2) --journalmode TRUNCATE
	$(MPTEST1) --journalmode TRUNCATE

#
quicktest:	./testfixture$(EXE)
	./testfixture$(EXE) $(TOP)/test/extraquick.test $(TESTOPTS)

# The default test case.  Runs most of the faster standard TCL tests,
# and fuzz tests, and sqlite3_analyzer and sqldiff tests.
#
test:	$(TESTPROGS) sourcetest fastfuzztest
	./testfixture$(EXE) $(TOP)/test/veryquick.test $(TESTOPTS)

# Run a test using valgrind.  This can take a really long time
# because valgrind is so much slower than a native machine.
#
valgrindtest:	$(TESTPROGS) valgrindfuzz
	OMIT_MISUSE=1 valgrind -v \

# This target will fail if the SQLite amalgamation contains any exported
# symbols that do not begin with "sqlite3_". It is run as part of the
# releasetest.tcl script.
#
checksymbols: sqlite3.o
	nm -g --defined-only sqlite3.o | grep -v " sqlite3_" ; test $$? -ne 0

# Build the amalgamation-autoconf package.  The amalamgation-tarball target builds
# a tarball named for the version number.  Ex:  sqlite-autoconf-3110000.tar.gz.
# The snapshot-tarball target builds a tarball named by the SHA1 hash
#
amalgamation-tarball: sqlite3.c
	TOP=$(TOP) sh $(TOP)/tool/mkautoconfamal.sh --normal

snapshot-tarball: sqlite3.c
	TOP=$(TOP) sh $(TOP)/tool/mkautoconfamal.sh --snapshot


# Standard install and cleanup targets
#
install:	sqlite3 libsqlite3.a sqlite3.h
	mv sqlite3 /usr/bin
	mv libsqlite3.a /usr/lib

	rm -f showdb showdb.exe
	rm -f showjournal showjournal.exe
	rm -f showstat4 showstat4.exe
	rm -f showwal showwal.exe
	rm -f speedtest1 speedtest1.exe
	rm -f wordcount wordcount.exe
	rm -f rbu rbu.exe
	rm -f srcck1 srcck1.exe
	rm -f sqlite3.c sqlite3-*.c fts?amal.c tclsqlite3.c
	rm -f sqlite3rc.h
	rm -f shell.c sqlite3ext.h
	rm -f sqlite3_analyzer sqlite3_analyzer.exe sqlite3_analyzer.c
	rm -f sqlite-*-output.vsix
	rm -f mptester mptester.exe
	rm -f fuzzershell fuzzershell.exe
	rm -f fuzzcheck fuzzcheck.exe
	rm -f sqldiff sqldiff.exe
	rm -f fts5.* fts5parse.*

#include <stdio.h>
#if defined(_WIN32)
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#else
# include <unistd.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <ctype.h>

#define ISSPACE(X) isspace((unsigned char)(X))
#define ISDIGIT(X) isdigit((unsigned char)(X))

static void usage(const char *argv0){
  int i;
  const char *zTail = argv0;
  for(i=0; argv0[i]; i++){
    if( isDirSep(argv0[i]) ) zTail = argv0+i+1;
  }
  fprintf(stderr,"Usage: %s DATABASE ?OPTIONS? ?SCRIPT?\n", zTail);
  fprintf(stderr,
    "Options:\n"
    "   --errlog FILENAME           Write errors to FILENAME\n"
    "   --journalmode MODE          Use MODE as the journal_mode\n"
    "   --log FILENAME              Log messages to FILENAME\n"
    "   --quiet                     Suppress unnecessary output\n"
    "   --vfs NAME                  Use NAME as the VFS\n"
    "   --repeat N                  Repeat the test N times\n"
    "   --sqltrace                  Enable SQL tracing\n"
    "   --sync                      Enable synchronous disk writes\n"
    "   --timeout MILLISEC          Busy timeout is MILLISEC\n"
    "   --trace BOOLEAN             Enable or disable tracing\n"
  );
  exit(1);
}

/* Report on unrecognized arguments */
static void unrecognizedArguments(
  const char *argv0,
  int nArg,

  char *zScript;
  int taskId;
  const char *zTrace;
  const char *zCOption;
  const char *zJMode;
  const char *zNRep;
  int nRep = 1, iRep;
  int iTmout = 0;              /* Default: no timeout */
  const char *zTmout;

  g.argv0 = argv[0];
  g.iTrace = 1;
  if( argc<2 ) usage(argv[0]);
  g.zDbFile = argv[1];
  if( strglob("*.test", g.zDbFile) ) usage(argv[0]);
  if( strcmp(sqlite3_sourceid(), SQLITE_SOURCE_ID)!=0 ){

  g.zVfs = findOption(argv+2, &n, "vfs", 1);
  zClient = findOption(argv+2, &n, "client", 1);
  g.zErrLog = findOption(argv+2, &n, "errlog", 1);
  g.zLog = findOption(argv+2, &n, "log", 1);
  zTrace = findOption(argv+2, &n, "trace", 1);
  if( zTrace ) g.iTrace = atoi(zTrace);
  if( findOption(argv+2, &n, "quiet", 0)!=0 ) g.iTrace = 0;
  zTmout = findOption(argv+2, &n, "timeout", 1);
  if( zTmout ) iTmout = atoi(zTmout);
  g.bSqlTrace = findOption(argv+2, &n, "sqltrace", 0)!=0;
  g.bSync = findOption(argv+2, &n, "sync", 0)!=0;
  if( g.zErrLog ){
    g.pErrLog = fopen(g.zErrLog, "a");
  }else{
    g.pErrLog = stderr;
  }
  if( g.zLog ){
    g.pLog = fopen(g.zLog, "a");
  }else{
    g.pLog = stdout;
  }
  
  sqlite3_config(SQLITE_CONFIG_LOG, sqlErrorCallback, 0);
  if( zClient ){
    iClient = atoi(zClient);
    if( iClient<1 ) fatalError("illegal client number: %d\n", iClient);
    sqlite3_snprintf(sizeof(g.zName), g.zName, "%05d.client%02d",
                     GETPID(), iClient);
  }else{
    int nTry = 0;
    if( g.iTrace>0 ){
      printf("BEGIN: %s", argv[0]);
      for(i=1; i<argc; i++) printf(" %s", argv[i]);
      printf("\n");
      printf("With SQLite " SQLITE_VERSION " " SQLITE_SOURCE_ID "\n" );
      for(i=0; (zCOption = sqlite3_compileoption_get(i))!=0; i++){
        printf("-DSQLITE_%s\n", zCOption);
      }
      fflush(stdout);
    }
    iClient =  0;
    do{
      if( (nTry%5)==4 ) printf("... %strying to unlink '%s'\n",
                               nTry>5 ? "still " : "", g.zDbFile);
      rc = unlink(g.zDbFile);
      if( rc && errno==ENOENT ) rc = 0;
    }while( rc!=0 && (++nTry)<60 && sqlite3_sleep(1000)>0 );
    if( rc!=0 ){
      fatalError("unable to unlink '%s' after %d attempts\n",
                 g.zDbFile, nTry);
    }
    openFlags |= SQLITE_OPEN_CREATE;
  }
  rc = sqlite3_open_v2(g.zDbFile, &g.db, openFlags, g.zVfs);
  if( rc ) fatalError("cannot open [%s]", g.zDbFile);
  if( iTmout>0 ) sqlite3_busy_timeout(g.db, iTmout);
  
  if( zJMode ){
#if defined(_WIN32)
    if( sqlite3_stricmp(zJMode,"persist")==0
     || sqlite3_stricmp(zJMode,"truncate")==0
    ){
      printf("Changing journal mode to DELETE from %s", zJMode);
      zJMode = "DELETE";

exit_rename_table:
  sqlite3SrcListDelete(db, pSrc);
  sqlite3DbFree(db, zName);
  db->flags = savedDbFlags;
}




























/*
** This function is called after an "ALTER TABLE ... ADD" statement
** has been parsed. Argument pColDef contains the text of the new
** column definition.
**
** The Table structure pParse->pNewTable was extended to include
** the new column during parsing.
*/
void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){
  Table *pNew;              /* Copy of pParse->pNewTable */
  Table *pTab;              /* Table being altered */
  int iDb;                  /* Database number */
  const char *zDb;          /* Database name */
  const char *zTab;         /* Table name */
  char *zCol;               /* Null-terminated column definition */
  Column *pCol;             /* The new column */
  Expr *pDflt;              /* Default value for the new column */
  sqlite3 *db;              /* The database connection; */
  Vdbe *v = pParse->pVdbe;  /* The prepared statement under construction */

  db = pParse->db;
  if( pParse->nErr || db->mallocFailed ) return;
  assert( v!=0 );
  pNew = pParse->pNewTable;
  assert( pNew );

  assert( sqlite3BtreeHoldsAllMutexes(db) );
  iDb = sqlite3SchemaToIndex(db, pNew->pSchema);
  zDb = db->aDb[iDb].zName;
  zTab = &pNew->zName[16];  /* Skip the "sqlite_altertab_" prefix on the name */

  */
  if( pDflt ){
    sqlite3_value *pVal = 0;
    int rc;
    rc = sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_BLOB, &pVal);
    assert( rc==SQLITE_OK || rc==SQLITE_NOMEM );
    if( rc!=SQLITE_OK ){
      assert( db->mallocFailed == 1 );
      return;
    }
    if( !pVal ){
      sqlite3ErrorMsg(pParse, "Cannot add a column with non-constant default");
      return;
    }
    sqlite3ValueFree(pVal);

      zDb, SCHEMA_TABLE(iDb), pNew->addColOffset, zCol, pNew->addColOffset+1,
      zTab
    );
    sqlite3DbFree(db, zCol);
    db->flags = savedDbFlags;
  }

  /* If the default value of the new column is NULL, then the file
  ** format to 2. If the default value of the new column is not NULL,
  ** the file format be 3.  Back when this feature was first added
  ** in 2006, we went to the trouble to upgrade the file format to the
  ** minimum support values.  But 10-years on, we can assume that all
  ** extent versions of SQLite support file-format 4, so we always and
  ** unconditionally upgrade to 4.
  */
  sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, 
                    SQLITE_MAX_FILE_FORMAT);

  /* Reload the schema of the modified table. */
  reloadTableSchema(pParse, pTab, pTab->zName);
}

/*
** This function is called by the parser after the table-name in

  ** Use a call to btreeParseCellPtr() to verify that the values above
  ** were computed correctly.
  */
#if SQLITE_DEBUG
  {
    CellInfo info;
    pPage->xParseCell(pPage, pCell, &info);
    assert( nHeader==(int)(info.pPayload - pCell) );
    assert( info.nKey==nKey );
    assert( *pnSize == info.nSize );
    assert( spaceLeft == info.nLocal );
  }
#endif

  /* Write the payload into the local Cell and any extra into overflow pages */

*/
static int balance(BtCursor *pCur){
  int rc = SQLITE_OK;
  const int nMin = pCur->pBt->usableSize * 2 / 3;
  u8 aBalanceQuickSpace[13];
  u8 *pFree = 0;

  VVA_ONLY( int balance_quick_called = 0 );
  VVA_ONLY( int balance_deeper_called = 0 );

  do {
    int iPage = pCur->iPage;
    MemPage *pPage = pCur->apPage[iPage];

    if( iPage==0 ){
      if( pPage->nOverflow ){
        /* The root page of the b-tree is overfull. In this case call the
        ** balance_deeper() function to create a new child for the root-page
        ** and copy the current contents of the root-page to it. The
        ** next iteration of the do-loop will balance the child page.
        */ 
        assert( balance_deeper_called==0 );
        VVA_ONLY( balance_deeper_called++ );
        rc = balance_deeper(pPage, &pCur->apPage[1]);
        if( rc==SQLITE_OK ){
          pCur->iPage = 1;
          pCur->aiIdx[0] = 0;
          pCur->aiIdx[1] = 0;
          assert( pCur->apPage[1]->nOverflow );
        }

          ** buffer. 
          **
          ** The purpose of the following assert() is to check that only a
          ** single call to balance_quick() is made for each call to this
          ** function. If this were not verified, a subtle bug involving reuse
          ** of the aBalanceQuickSpace[] might sneak in.
          */
          assert( balance_quick_called==0 ); 
          VVA_ONLY( balance_quick_called++ );
          rc = balance_quick(pParent, pPage, aBalanceQuickSpace);
        }else
#endif
        {
          /* In this case, call balance_nonroot() to redistribute cells
          ** between pPage and up to 2 of its sibling pages. This involves
          ** modifying the contents of pParent, which may cause pParent to

  BtShared *pBt = p->pBt;
  int savedDbFlags = pBt->db->flags;
  char zErr[100];
  VVA_ONLY( int nRef );

  sqlite3BtreeEnter(p);
  assert( p->inTrans>TRANS_NONE && pBt->inTransaction>TRANS_NONE );
  VVA_ONLY( nRef = sqlite3PagerRefcount(pBt->pPager) );
  assert( nRef>=0 );
  sCheck.pBt = pBt;
  sCheck.pPager = pBt->pPager;
  sCheck.nPage = btreePagecount(sCheck.pBt);
  sCheck.mxErr = mxErr;
  sCheck.nErr = 0;
  sCheck.mallocFailed = 0;
  sCheck.zPfx = 0;

      sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb);
      sqlite3VdbeChangeP5(v, OPFLAG_P2ISREG);
      pParse->nTab = 2;
      addrTop = sqlite3VdbeCurrentAddr(v) + 1;
      sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop);
      sqlite3SelectDestInit(&dest, SRT_Coroutine, regYield);
      sqlite3Select(pParse, pSelect, &dest);
      sqlite3VdbeEndCoroutine(v, regYield);
      sqlite3VdbeJumpHere(v, addrTop - 1);
      if( pParse->nErr ) return;
      pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect);
      if( pSelTab==0 ) return;
      assert( p->aCol==0 );
      p->nCol = pSelTab->nCol;
      p->aCol = pSelTab->aCol;

    sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop);
    sqlite3SelectDestInit(&dest, SRT_Coroutine, regYield);
    dest.iSdst = bIdListInOrder ? regData : 0;
    dest.nSdst = pTab->nCol;
    rc = sqlite3Select(pParse, pSelect, &dest);
    regFromSelect = dest.iSdst;
    if( rc || db->mallocFailed || pParse->nErr ) goto insert_cleanup;
    sqlite3VdbeEndCoroutine(v, regYield);
    sqlite3VdbeJumpHere(v, addrTop - 1);                       /* label B: */
    assert( pSelect->pEList );
    nColumn = pSelect->pEList->nExpr;

    /* Set useTempTable to TRUE if the result of the SELECT statement
    ** should be written into a temporary table (template 4).  Set to
    ** FALSE if each output row of the SELECT can be written directly into

      sqlite3VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError);
      sqlite3MayAbort(pParse);
    }else
#endif
    {
      int isReplace;    /* Set to true if constraints may cause a replace */
      sqlite3GenerateConstraintChecks(pParse, pTab, aRegIdx, iDataCur, iIdxCur,
          regIns, 0, ipkColumn>=0, onError, endOfLoop, &isReplace, 0
      );
      sqlite3FkCheck(pParse, pTab, 0, regIns, 0, 0);
      sqlite3CompleteInsertion(pParse, pTab, iDataCur, iIdxCur,
                               regIns, aRegIdx, 0, appendFlag, isReplace==0);
    }
  }

#endif
#ifdef pTrigger
 #undef pTrigger
#endif
#ifdef tmask
 #undef tmask
#endif

/*
** Meanings of bits in of pWalker->eCode for checkConstraintUnchanged()
*/
#define CKCNSTRNT_COLUMN   0x01    /* CHECK constraint uses a changing column */
#define CKCNSTRNT_ROWID    0x02    /* CHECK constraint references the ROWID */

/* This is the Walker callback from checkConstraintUnchanged().  Set
** bit 0x01 of pWalker->eCode if
** pWalker->eCode to 0 if this expression node references any of the
** columns that are being modifed by an UPDATE statement.
*/
static int checkConstraintExprNode(Walker *pWalker, Expr *pExpr){
  if( pExpr->op==TK_COLUMN ){
    assert( pExpr->iColumn>=0 || pExpr->iColumn==-1 );
    if( pExpr->iColumn>=0 ){
      if( pWalker->u.aiCol[pExpr->iColumn]>=0 ){
        pWalker->eCode |= CKCNSTRNT_COLUMN;
      }
    }else{
      pWalker->eCode |= CKCNSTRNT_ROWID;
    }
  }
  return WRC_Continue;
}

/*
** pExpr is a CHECK constraint on a row that is being UPDATE-ed.  The
** only columns that are modified by the UPDATE are those for which
** aiChng[i]>=0, and also the ROWID is modified if chngRowid is true.
**
** Return true if CHECK constraint pExpr does not use any of the
** changing columns (or the rowid if it is changing).  In other words,
** return true if this CHECK constraint can be skipped when validating
** the new row in the UPDATE statement.
*/
static int checkConstraintUnchanged(Expr *pExpr, int *aiChng, int chngRowid){
  Walker w;
  memset(&w, 0, sizeof(w));
  w.eCode = 0;
  w.xExprCallback = checkConstraintExprNode;
  w.u.aiCol = aiChng;
  sqlite3WalkExpr(&w, pExpr);
  if( !chngRowid ){
    testcase( (w.eCode & CKCNSTRNT_ROWID)!=0 );
    w.eCode &= ~CKCNSTRNT_ROWID;
  }
  testcase( w.eCode==0 );
  testcase( w.eCode==CKCNSTRNT_COLUMN );
  testcase( w.eCode==CKCNSTRNT_ROWID );
  testcase( w.eCode==(CKCNSTRNT_ROWID|CKCNSTRNT_COLUMN) );
  return !w.eCode;
}

/*
** Generate code to do constraint checks prior to an INSERT or an UPDATE
** on table pTab.
**
** The regNewData parameter is the first register in a range that contains
** the data to be inserted or the data after the update.  There will be

  int iDataCur,        /* Canonical data cursor (main table or PK index) */
  int iIdxCur,         /* First index cursor */
  int regNewData,      /* First register in a range holding values to insert */
  int regOldData,      /* Previous content.  0 for INSERTs */
  u8 pkChng,           /* Non-zero if the rowid or PRIMARY KEY changed */
  u8 overrideError,    /* Override onError to this if not OE_Default */
  int ignoreDest,      /* Jump to this label on an OE_Ignore resolution */
  int *pbMayReplace,   /* OUT: Set to true if constraint may cause a replace */
  int *aiChng          /* column i is unchanged if aiChng[i]<0 */
){
  Vdbe *v;             /* VDBE under constrution */
  Index *pIdx;         /* Pointer to one of the indices */
  Index *pPk = 0;      /* The PRIMARY KEY index */
  sqlite3 *db;         /* Database connection */
  int i;               /* loop counter */
  int ix;              /* Index loop counter */

  VdbeModuleComment((v, "BEGIN: GenCnstCks(%d,%d,%d,%d,%d)",
                     iDataCur, iIdxCur, regNewData, regOldData, pkChng));

  /* Test all NOT NULL constraints.
  */
  for(i=0; i<nCol; i++){
    if( i==pTab->iPKey ){
      continue;        /* ROWID is never NULL */
    }
    if( aiChng && aiChng[i]<0 ){
      /* Don't bother checking for NOT NULL on columns that do not change */
      continue;
    }
    onError = pTab->aCol[i].notNull;
    if( onError==OE_None ) continue;  /* This column is allowed to be NULL */
    if( overrideError!=OE_Default ){
      onError = overrideError;
    }else if( onError==OE_Default ){
      onError = OE_Abort;
    }
    if( onError==OE_Replace && pTab->aCol[i].pDflt==0 ){
      onError = OE_Abort;

  */
#ifndef SQLITE_OMIT_CHECK
  if( pTab->pCheck && (db->flags & SQLITE_IgnoreChecks)==0 ){
    ExprList *pCheck = pTab->pCheck;
    pParse->ckBase = regNewData+1;
    onError = overrideError!=OE_Default ? overrideError : OE_Abort;
    for(i=0; i<pCheck->nExpr; i++){
      int allOk;
      Expr *pExpr = pCheck->a[i].pExpr;
      if( aiChng && checkConstraintUnchanged(pExpr, aiChng, pkChng) ) continue;
      allOk = sqlite3VdbeMakeLabel(v);
      sqlite3ExprIfTrue(pParse, pExpr, allOk, SQLITE_JUMPIFNULL);
      if( onError==OE_Ignore ){
        sqlite3VdbeGoto(v, ignoreDest);
      }else{
        char *zName = pCheck->a[i].zName;
        if( zName==0 ) zName = pTab->zName;
        if( onError==OE_Replace ) onError = OE_Abort; /* IMP: R-15569-63625 */
        sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_CHECK,

    ** assert() is disabled, then the return value is zero.  If X is
    ** false and assert() is enabled, then the assertion fires and the
    ** process aborts.  If X is false and assert() is disabled, then the
    ** return value is zero.
    */
    case SQLITE_TESTCTRL_ASSERT: {
      volatile int x = 0;
      assert( /*side-effects-ok*/ (x = va_arg(ap,int))!=0 );
      rc = x;
      break;
    }


    /*
    **  sqlite3_test_control(SQLITE_TESTCTRL_ALWAYS, int X)

  void *p;
  if( db ) return sqlite3DbMallocRawNN(db, n);
  p = sqlite3Malloc(n);
  sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
  return p;
}
void *sqlite3DbMallocRawNN(sqlite3 *db, u64 n){
#ifndef SQLITE_OMIT_LOOKASIDE
  LookasideSlot *pBuf;
  assert( db!=0 );
  assert( sqlite3_mutex_held(db->mutex) );
  assert( db->pnBytesFreed==0 );


  if( db->lookaside.bDisable==0 ){
    assert( db->mallocFailed==0 );
    if( n>db->lookaside.sz ){
      db->lookaside.anStat[1]++;
    }else if( (pBuf = db->lookaside.pFree)==0 ){
      db->lookaside.anStat[2]++;
    }else{
      db->lookaside.pFree = pBuf->pNext;
      db->lookaside.nOut++;
      db->lookaside.anStat[0]++;
      if( db->lookaside.nOut>db->lookaside.mxOut ){
        db->lookaside.mxOut = db->lookaside.nOut;
      }
      return (void*)pBuf;
    }
  }else if( db->mallocFailed ){
    return 0;
  }
#else
  assert( db!=0 );
  assert( sqlite3_mutex_held(db->mutex) );
  assert( db->pnBytesFreed==0 );
  if( db->mallocFailed ){
    return 0;
  }
#endif
  return dbMallocRawFinish(db, n);
}

** This file contains OS interface code that is common to all
** architectures.
*/
#define _SQLITE_OS_C_ 1
#include "sqliteInt.h"
#undef _SQLITE_OS_C_

/*
** If we compile with the SQLITE_TEST macro set, then the following block
** of code will give us the ability to simulate a disk I/O error.  This
** is used for testing the I/O recovery logic.
*/
#if defined(SQLITE_TEST)
int sqlite3_io_error_hit = 0;            /* Total number of I/O Errors */
int sqlite3_io_error_hardhit = 0;        /* Number of non-benign errors */
int sqlite3_io_error_pending = 0;        /* Count down to first I/O error */
int sqlite3_io_error_persist = 0;        /* True if I/O errors persist */
int sqlite3_io_error_benign = 0;         /* True if errors are benign */
int sqlite3_diskfull_pending = 0;
int sqlite3_diskfull = 0;
#endif /* defined(SQLITE_TEST) */

/*
** When testing, also keep a count of the number of open files.
*/
#if defined(SQLITE_TEST)
int sqlite3_open_file_count = 0;
#endif /* defined(SQLITE_TEST) */

/*
** The default SQLite sqlite3_vfs implementations do not allocate
** memory (actually, os_unix.c allocates a small amount of memory
** from within OsOpen()), but some third-party implementations may.
** So we test the effects of a malloc() failing and the sqlite3OsXXX()
** function returning SQLITE_IOERR_NOMEM using the DO_OS_MALLOC_TEST macro.
**
** The following functions are instrumented for malloc() failure
** testing:
**
**     sqlite3OsRead()
**     sqlite3OsWrite()
**     sqlite3OsSync()
**     sqlite3OsFileSize()
**     sqlite3OsLock()

** is only a hint and can be safely ignored.  The sqlite3OsFileControlHint()
** routine has no return value since the return value would be meaningless.
*/
int sqlite3OsFileControl(sqlite3_file *id, int op, void *pArg){
#ifdef SQLITE_TEST
  if( op!=SQLITE_FCNTL_COMMIT_PHASETWO ){
    /* Faults are not injected into COMMIT_PHASETWO because, assuming SQLite
    ** is using a regular VFS, it is called after the corresponding
    ** transaction has been committed. Injecting a fault at this point
    ** confuses the test scripts - the COMMIT comand returns SQLITE_NOMEM
    ** but the transaction is committed anyway.
    **
    ** The core must call OsFileControl() though, not OsFileControlHint(),
    ** as if a custom VFS (e.g. zipvfs) returns an error here, it probably
    ** means the commit really has failed and an error should be returned
    ** to the user.  */

#endif

/*
** The next group of routines are convenience wrappers around the
** VFS methods.
*/
int sqlite3OsOpen(
  sqlite3_vfs *pVfs,
  const char *zPath,
  sqlite3_file *pFile,
  int flags,
  int *pFlagsOut
){
  int rc;
  DO_OS_MALLOC_TEST(0);
  /* 0x87f7f is a mask of SQLITE_OPEN_ flags that are valid to be passed
  ** down into the VFS layer.  Some SQLITE_OPEN_ flags (for example,
  ** SQLITE_OPEN_FULLMUTEX or SQLITE_OPEN_SHAREDCACHE) are blocked before
  ** reaching the VFS. */
  rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f7f, pFlagsOut);
  assert( rc==SQLITE_OK || pFile->pMethods==0 );
  return rc;
}
int sqlite3OsDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
  DO_OS_MALLOC_TEST(0);
  assert( dirSync==0 || dirSync==1 );
  return pVfs->xDelete(pVfs, zPath, dirSync);
}
int sqlite3OsAccess(
  sqlite3_vfs *pVfs,
  const char *zPath,
  int flags,
  int *pResOut
){
  DO_OS_MALLOC_TEST(0);
  return pVfs->xAccess(pVfs, zPath, flags, pResOut);
}
int sqlite3OsFullPathname(
  sqlite3_vfs *pVfs,
  const char *zPath,
  int nPathOut,
  char *zPathOut
){
  DO_OS_MALLOC_TEST(0);
  zPathOut[0] = 0;
  return pVfs->xFullPathname(pVfs, zPath, nPathOut, zPathOut);
}
#ifndef SQLITE_OMIT_LOAD_EXTENSION

    rc = pVfs->xCurrentTime(pVfs, &r);
    *pTimeOut = (sqlite3_int64)(r*86400000.0);
  }
  return rc;
}

int sqlite3OsOpenMalloc(
  sqlite3_vfs *pVfs,
  const char *zFile,
  sqlite3_file **ppFile,
  int flags,
  int *pOutFlags
){
  int rc = SQLITE_NOMEM;
  sqlite3_file *pFile;
  pFile = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile);
  if( pFile ){

/*
** Macros for performance tracing.  Normally turned off.  Only works
** on i486 hardware.
*/
#ifdef SQLITE_PERFORMANCE_TRACE

/*
** hwtime.h contains inline assembler code for implementing
** high-performance timing routines.
*/
#include "hwtime.h"

static sqlite_uint64 g_start;
static sqlite_uint64 g_elapsed;
#define TIMER_START       g_start=sqlite3Hwtime()
#define TIMER_END         g_elapsed=sqlite3Hwtime()-g_start
#define TIMER_ELAPSED     g_elapsed
#else
#define TIMER_START
#define TIMER_END
#define TIMER_ELAPSED     ((sqlite_uint64)0)
#endif

/*
** If we compile with the SQLITE_TEST macro set, then the following block
** of code will give us the ability to simulate a disk I/O error.  This
** is used for testing the I/O recovery logic.
*/
#if defined(SQLITE_TEST)
extern int sqlite3_io_error_hit;
extern int sqlite3_io_error_hardhit;
extern int sqlite3_io_error_pending;
extern int sqlite3_io_error_persist;
extern int sqlite3_io_error_benign;
extern int sqlite3_diskfull_pending;
extern int sqlite3_diskfull;
#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X)
#define SimulateIOError(CODE)  \
  if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \
       || sqlite3_io_error_pending-- == 1 )  \
              { local_ioerr(); CODE; }
static void local_ioerr(){
  IOTRACE(("IOERR\n"));

       sqlite3_diskfull_pending--; \
     } \
   }
#else
#define SimulateIOErrorBenign(X)
#define SimulateIOError(A)
#define SimulateDiskfullError(A)
#endif /* defined(SQLITE_TEST) */

/*
** When testing, keep a count of the number of open files.
*/
#if defined(SQLITE_TEST)
extern int sqlite3_open_file_count;
#define OpenCounter(X)  sqlite3_open_file_count+=(X)
#else
#define OpenCounter(X)
#endif /* defined(SQLITE_TEST) */

#endif /* !defined(_OS_COMMON_H_) */

  */
  addrSelectA = sqlite3VdbeCurrentAddr(v) + 1;
  addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrA, 0, addrSelectA);
  VdbeComment((v, "left SELECT"));
  pPrior->iLimit = regLimitA;
  explainSetInteger(iSub1, pParse->iNextSelectId);
  sqlite3Select(pParse, pPrior, &destA);
  sqlite3VdbeEndCoroutine(v, regAddrA);
  sqlite3VdbeJumpHere(v, addr1);

  /* Generate a coroutine to evaluate the SELECT statement on 
  ** the right - the "B" select
  */
  addrSelectB = sqlite3VdbeCurrentAddr(v) + 1;
  addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrB, 0, addrSelectB);
  VdbeComment((v, "right SELECT"));
  savedLimit = p->iLimit;
  savedOffset = p->iOffset;
  p->iLimit = regLimitB;
  p->iOffset = 0;  
  explainSetInteger(iSub2, pParse->iNextSelectId);
  sqlite3Select(pParse, p, &destB);
  p->iLimit = savedLimit;
  p->iOffset = savedOffset;
  sqlite3VdbeEndCoroutine(v, regAddrB);

  /* Generate a subroutine that outputs the current row of the A
  ** select as the next output row of the compound select.
  */
  VdbeNoopComment((v, "Output routine for A"));
  addrOutA = generateOutputSubroutine(pParse,
                 p, &destA, pDest, regOutA,

      pItem->addrFillSub = addrTop;
      sqlite3SelectDestInit(&dest, SRT_Coroutine, pItem->regReturn);
      explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId);
      sqlite3Select(pParse, pSub, &dest);
      pItem->pTab->nRowLogEst = sqlite3LogEst(pSub->nSelectRow);
      pItem->fg.viaCoroutine = 1;
      pItem->regResult = dest.iSdst;
      sqlite3VdbeEndCoroutine(v, pItem->regReturn);
      sqlite3VdbeJumpHere(v, addrTop-1);
      sqlite3ClearTempRegCache(pParse);
    }else{
      /* Generate a subroutine that will fill an ephemeral table with
      ** the content of this subquery.  pItem->addrFillSub will point
      ** to the address of the generated subroutine.  pItem->regReturn
      ** is a register allocated to hold the subroutine return address

** State information about the database connection is contained in an
** instance of the following structure.
*/
typedef struct ShellState ShellState;
struct ShellState {
  sqlite3 *db;           /* The database */
  int echoOn;            /* True to echo input commands */
  int autoExplain;       /* Automatically turn on .explain mode */
  int autoEQP;           /* Run EXPLAIN QUERY PLAN prior to seach SQL stmt */
  int statsOn;           /* True to display memory stats before each finalize */
  int scanstatsOn;       /* True to display scan stats before each finalize */
  int countChanges;      /* True to display change counts */
  int backslashOn;       /* Resolve C-style \x escapes in SQL input text */
  int outCount;          /* Revert to stdout when reaching zero */
  int cnt;               /* Number of records displayed so far */
  FILE *out;             /* Write results here */
  FILE *traceOut;        /* Output for sqlite3_trace() */
  int nErr;              /* Number of errors seen */
  int mode;              /* An output mode setting */
  int cMode;             /* temporary output mode for the current query */
  int normalMode;        /* Output mode before ".explain on" */
  int writableSchema;    /* True if PRAGMA writable_schema=ON */
  int showHeader;        /* True to show column names in List or Column mode */
  unsigned shellFlgs;    /* Various flags */
  char *zDestTable;      /* Name of destination table when MODE_Insert */
  char colSeparator[20]; /* Column separator character for several modes */
  char rowSeparator[20]; /* Row separator character for MODE_Ascii */
  int colWidth[100];     /* Requested width of each column when in column mode*/
  int actualWidth[100];  /* Actual width of each column */
  char nullValue[20];    /* The text to print when a NULL comes back from
                         ** the database */

  char outfile[FILENAME_MAX]; /* Filename for *out */
  const char *zDbFilename;    /* name of the database file */
  char *zFreeOnClose;         /* Filename to free when closing */
  const char *zVfs;           /* Name of VFS to use */
  sqlite3_stmt *pStmt;   /* Current statement if any. */
  FILE *pLog;            /* Write log output here */
  int *aiIndent;         /* Array of indents used in MODE_Explain */

  char **azArg,    /* Text of each result column */
  char **azCol,    /* Column names */
  int *aiType      /* Column types */
){
  int i;
  ShellState *p = (ShellState*)pArg;

  switch( p->cMode ){
    case MODE_Line: {
      int w = 5;
      if( azArg==0 ) break;
      for(i=0; i<nArg; i++){
        int len = strlen30(azCol[i] ? azCol[i] : "");
        if( len>w ) w = len;
      }
      if( p->cnt++>0 ) utf8_printf(p->out, "%s", p->rowSeparator);
      for(i=0; i<nArg; i++){
        utf8_printf(p->out,"%*s = %s%s", w, azCol[i],
                azArg[i] ? azArg[i] : p->nullValue, p->rowSeparator);
      }
      break;
    }
    case MODE_Explain:
    case MODE_Column: {
      static const int aExplainWidths[] = {4, 13, 4, 4, 4, 13, 2, 13};
      const int *colWidth;
      int showHdr;
      char *rowSep;
      if( p->cMode==MODE_Column ){
        colWidth = p->colWidth;
        showHdr = p->showHeader;
        rowSep = p->rowSeparator;
      }else{
        colWidth = aExplainWidths;
        showHdr = 1;
        rowSep = SEP_Row;
      }
      if( p->cnt++==0 ){
        for(i=0; i<nArg; i++){
          int w, n;
          if( i<ArraySize(p->colWidth) ){
            w = colWidth[i];
          }else{
            w = 0;
          }
          if( w==0 ){
            w = strlen30(azCol[i] ? azCol[i] : "");
            if( w<10 ) w = 10;
            n = strlen30(azArg && azArg[i] ? azArg[i] : p->nullValue);
            if( w<n ) w = n;
          }
          if( i<ArraySize(p->actualWidth) ){
            p->actualWidth[i] = w;
          }
          if( showHdr ){
            if( w<0 ){
              utf8_printf(p->out,"%*.*s%s",-w,-w,azCol[i],
                      i==nArg-1 ? rowSep : "  ");
            }else{
              utf8_printf(p->out,"%-*.*s%s",w,w,azCol[i],
                      i==nArg-1 ? rowSep : "  ");
            }
          }
        }
        if( showHdr ){
          for(i=0; i<nArg; i++){
            int w;
            if( i<ArraySize(p->actualWidth) ){
               w = p->actualWidth[i];
               if( w<0 ) w = -w;
            }else{
               w = 10;
            }
            utf8_printf(p->out,"%-*.*s%s",w,w,
                   "----------------------------------------------------------"
                   "----------------------------------------------------------",
                    i==nArg-1 ? rowSep : "  ");
          }
        }
      }
      if( azArg==0 ) break;
      for(i=0; i<nArg; i++){
        int w;
        if( i<ArraySize(p->actualWidth) ){
           w = p->actualWidth[i];
        }else{
           w = 10;
        }
        if( p->cMode==MODE_Explain && azArg[i] && strlen30(azArg[i])>w ){
          w = strlen30(azArg[i]);
        }
        if( i==1 && p->aiIndent && p->pStmt ){
          if( p->iIndent<p->nIndent ){
            utf8_printf(p->out, "%*.s", p->aiIndent[p->iIndent], "");
          }
          p->iIndent++;
        }
        if( w<0 ){
          utf8_printf(p->out,"%*.*s%s",-w,-w,
              azArg[i] ? azArg[i] : p->nullValue,
              i==nArg-1 ? rowSep : "  ");
        }else{
          utf8_printf(p->out,"%-*.*s%s",w,w,
              azArg[i] ? azArg[i] : p->nullValue,
              i==nArg-1 ? rowSep : "  ");
        }
      }
      break;
    }
    case MODE_Semi:
    case MODE_List: {
      if( p->cnt++==0 && p->showHeader ){
        for(i=0; i<nArg; i++){
          utf8_printf(p->out,"%s%s",azCol[i],
                  i==nArg-1 ? p->rowSeparator : p->colSeparator);
        }
      }
      if( azArg==0 ) break;
      for(i=0; i<nArg; i++){
        char *z = azArg[i];
        if( z==0 ) z = p->nullValue;
        utf8_printf(p->out, "%s", z);
        if( i<nArg-1 ){
          utf8_printf(p->out, "%s", p->colSeparator);
        }else if( p->cMode==MODE_Semi ){
          utf8_printf(p->out, ";%s", p->rowSeparator);
        }else{
          utf8_printf(p->out, "%s", p->rowSeparator);
        }
      }
      break;
    }

                           "NextIfOpen", "PrevIfOpen", 0 };
  const char *azYield[] = { "Yield", "SeekLT", "SeekGT", "RowSetRead",
                            "Rewind", 0 };
  const char *azGoto[] = { "Goto", 0 };

  /* Try to figure out if this is really an EXPLAIN statement. If this
  ** cannot be verified, return early.  */
  if( sqlite3_column_count(pSql)!=8 ){
    p->cMode = p->mode;
    return;
  }
  zSql = sqlite3_sql(pSql);
  if( zSql==0 ) return;
  for(z=zSql; *z==' ' || *z=='\t' || *z=='\n' || *z=='\f' || *z=='\r'; z++);
  if( sqlite3_strnicmp(z, "explain", 7) ){
    p->cMode = p->mode;
    return;
  }

  for(iOp=0; SQLITE_ROW==sqlite3_step(pSql); iOp++){
    int i;
    int iAddr = sqlite3_column_int(pSql, 0);
    const char *zOp = (const char*)sqlite3_column_text(pSql, 1);

    /* Set p2 to the P2 field of the current opcode. Then, assuming that
    ** p2 is an instruction address, set variable p2op to the index of that
    ** instruction in the aiIndent[] array. p2 and p2op may be different if
    ** the current instruction is part of a sub-program generated by an
    ** SQL trigger or foreign key.  */
    int p2 = sqlite3_column_int(pSql, 3);
    int p2op = (p2 + (iOp-iAddr));

    /* Grow the p->aiIndent array as required */
    if( iOp>=nAlloc ){
      if( iOp==0 ){
        /* Do further verfication that this is explain output.  Abort if
        ** it is not */
        static const char *explainCols[] = {
           "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment" };
        int jj;
        for(jj=0; jj<ArraySize(explainCols); jj++){
          if( strcmp(sqlite3_column_name(pSql,jj),explainCols[jj])!=0 ){
            p->cMode = p->mode;
            sqlite3_reset(pSql);
            return;
          }
        }
      }
      nAlloc += 100;
      p->aiIndent = (int*)sqlite3_realloc64(p->aiIndent, nAlloc*sizeof(int));
      abYield = (int*)sqlite3_realloc64(abYield, nAlloc*sizeof(int));
    }
    abYield[iOp] = str_in_array(zOp, azYield);
    p->aiIndent[iOp] = 0;
    p->nIndent = iOp+1;

            utf8_printf(pArg->out,"%s\n", sqlite3_column_text(pExplain, 3));
          }
        }
        sqlite3_finalize(pExplain);
        sqlite3_free(zEQP);
      }

      if( pArg ){
        pArg->cMode = pArg->mode;
        if( pArg->autoExplain
         && sqlite3_column_count(pStmt)==8
         && sqlite3_strlike("%EXPLAIN%", sqlite3_sql(pStmt),0)==0
        ){
          pArg->cMode = MODE_Explain;
        }
      
        /* If the shell is currently in ".explain" mode, gather the extra
        ** data required to add indents to the output.*/
        if( pArg->cMode==MODE_Explain ){
          explain_data_prepare(pArg, pStmt);
        }
      }

      /* perform the first step.  this will tell us if we
      ** have a result set or not and how wide it is.
      */
      rc = sqlite3_step(pStmt);
      /* if we have a result set... */

            for(i=0; i<nCol; i++){
              azCols[i] = (char *)sqlite3_column_name(pStmt, i);
            }
            do{
              /* extract the data and data types */
              for(i=0; i<nCol; i++){
                aiTypes[i] = x = sqlite3_column_type(pStmt, i);
                if( x==SQLITE_BLOB && pArg && pArg->cMode==MODE_Insert ){
                  azVals[i] = "";
                }else{
                  azVals[i] = (char*)sqlite3_column_text(pStmt, i);
                }
                if( !azVals[i] && (aiTypes[i]!=SQLITE_NULL) ){
                  rc = SQLITE_NOMEM;
                  break; /* from for */

  ".dbinfo ?DB?           Show status information about the database\n"
  ".dump ?TABLE? ...      Dump the database in an SQL text format\n"
  "                         If TABLE specified, only dump tables matching\n"
  "                         LIKE pattern TABLE.\n"
  ".echo on|off           Turn command echo on or off\n"
  ".eqp on|off            Enable or disable automatic EXPLAIN QUERY PLAN\n"
  ".exit                  Exit this program\n"
  ".explain ?on|off|auto? Turn EXPLAIN output mode on or off or to automatic\n"

  ".fullschema            Show schema and the content of sqlite_stat tables\n"
  ".headers on|off        Turn display of headers on or off\n"
  ".help                  Show this message\n"
  ".import FILE TABLE     Import data from FILE into TABLE\n"
  ".indexes ?TABLE?       Show names of all indexes\n"
  "                         If TABLE specified, only show indexes for tables\n"
  "                         matching LIKE pattern TABLE.\n"

  if( c=='d' && n>1 && strncmp(azArg[0], "databases", n)==0 ){
    ShellState data;
    char *zErrMsg = 0;
    open_db(p, 0);
    memcpy(&data, p, sizeof(data));
    data.showHeader = 1;
    data.cMode = data.mode = MODE_Column;
    data.colWidth[0] = 3;
    data.colWidth[1] = 15;
    data.colWidth[2] = 58;
    data.cnt = 0;
    sqlite3_exec(p->db, "PRAGMA database_list; ", callback, &data, &zErrMsg);
    if( zErrMsg ){
      utf8_printf(stderr,"Error: %s\n", zErrMsg);

  if( c=='e' && strncmp(azArg[0], "exit", n)==0 ){
    if( nArg>1 && (rc = (int)integerValue(azArg[1]))!=0 ) exit(rc);
    rc = 2;
  }else

  if( c=='e' && strncmp(azArg[0], "explain", n)==0 ){
    int val = 1;
    if( nArg>=2 ){
      if( strcmp(azArg[1],"auto")==0 ){
        val = 99;
      }else{
        val =  booleanValue(azArg[1]);

      }




    }
    if( val==1 && p->mode!=MODE_Explain ){
      p->normalMode = p->mode;

      p->mode = MODE_Explain;
      p->autoExplain = 0;









    }else if( val==0 ){
      if( p->mode==MODE_Explain ) p->mode = p->normalMode;
      p->autoExplain = 0;
    }else if( val==99 ){
      if( p->mode==MODE_Explain ) p->mode = p->normalMode;
      p->autoExplain = 1;

    }
  }else

  if( c=='f' && strncmp(azArg[0], "fullschema", n)==0 ){
    ShellState data;
    char *zErrMsg = 0;
    int doStats = 0;
    if( nArg!=1 ){
      raw_printf(stderr, "Usage: .fullschema\n");
      rc = 1;
      goto meta_command_exit;
    }
    open_db(p, 0);
    memcpy(&data, p, sizeof(data));
    data.showHeader = 0;
    data.cMode = data.mode = MODE_Semi;
    rc = sqlite3_exec(p->db,
       "SELECT sql FROM"
       "  (SELECT sql sql, type type, tbl_name tbl_name, name name, rowid x"
       "     FROM sqlite_master UNION ALL"
       "   SELECT sql, type, tbl_name, name, rowid FROM sqlite_temp_master) "
       "WHERE type!='meta' AND sql NOTNULL AND name NOT LIKE 'sqlite_%' "
       "ORDER BY rowid",

    }
    if( doStats==0 ){
      raw_printf(p->out, "/* No STAT tables available */\n");
    }else{
      raw_printf(p->out, "ANALYZE sqlite_master;\n");
      sqlite3_exec(p->db, "SELECT 'ANALYZE sqlite_master'",
                   callback, &data, &zErrMsg);
      data.cMode = data.mode = MODE_Insert;
      data.zDestTable = "sqlite_stat1";
      shell_exec(p->db, "SELECT * FROM sqlite_stat1",
                 shell_callback, &data,&zErrMsg);
      data.zDestTable = "sqlite_stat3";
      shell_exec(p->db, "SELECT * FROM sqlite_stat3",
                 shell_callback, &data,&zErrMsg);
      data.zDestTable = "sqlite_stat4";

  if( c=='i' && (strncmp(azArg[0], "indices", n)==0
                 || strncmp(azArg[0], "indexes", n)==0) ){
    ShellState data;
    char *zErrMsg = 0;
    open_db(p, 0);
    memcpy(&data, p, sizeof(data));
    data.showHeader = 0;
    data.cMode = data.mode = MODE_List;
    if( nArg==1 ){
      rc = sqlite3_exec(p->db,
        "SELECT name FROM sqlite_master "
        "WHERE type='index' AND name NOT LIKE 'sqlite_%' "
        "UNION ALL "
        "SELECT name FROM sqlite_temp_master "
        "WHERE type='index' "

      sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Unit);
      sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Record);
    }else {
      raw_printf(stderr, "Error: mode should be one of: "
         "ascii column csv html insert line list tabs tcl\n");
      rc = 1;
    }
    p->cMode = p->mode;
  }else

  if( c=='n' && strncmp(azArg[0], "nullvalue", n)==0 ){
    if( nArg==2 ){
      sqlite3_snprintf(sizeof(p->nullValue), p->nullValue,
                       "%.*s", (int)ArraySize(p->nullValue)-1, azArg[1]);
    }else{

  if( c=='s' && strncmp(azArg[0], "schema", n)==0 ){
    ShellState data;
    char *zErrMsg = 0;
    open_db(p, 0);
    memcpy(&data, p, sizeof(data));
    data.showHeader = 0;
    data.cMode = data.mode = MODE_Semi;
    if( nArg==2 ){
      int i;
      for(i=0; azArg[1][i]; i++) azArg[1][i] = ToLower(azArg[1][i]);
      if( strcmp(azArg[1],"sqlite_master")==0 ){
        char *new_argv[2], *new_colv[2];
        new_argv[0] = "CREATE TABLE sqlite_master (\n"
                      "  type text,\n"

    if( nArg!=1 ){
      raw_printf(stderr, "Usage: .show\n");
      rc = 1;
      goto meta_command_exit;
    }
    utf8_printf(p->out, "%12.12s: %s\n","echo", p->echoOn ? "on" : "off");
    utf8_printf(p->out, "%12.12s: %s\n","eqp", p->autoEQP ? "on" : "off");
    utf8_printf(p->out, "%12.12s: %s\n","explain",
         p->mode==MODE_Explain ? "on" : p->autoExplain ? "auto" : "off");
    utf8_printf(p->out,"%12.12s: %s\n","headers", p->showHeader ? "on" : "off");
    utf8_printf(p->out, "%12.12s: %s\n","mode", modeDescr[p->mode]);
    utf8_printf(p->out, "%12.12s: ", "nullvalue");
      output_c_string(p->out, p->nullValue);
      raw_printf(p->out, "\n");
    utf8_printf(p->out,"%12.12s: %s\n","output",
            strlen30(p->outfile) ? p->outfile : "stdout");

}

/*
** Initialize the state information in data
*/
static void main_init(ShellState *data) {
  memset(data, 0, sizeof(*data));
  data->normalMode = data->cMode = data->mode = MODE_List;
  data->autoExplain = 1;
  memcpy(data->colSeparator,SEP_Column, 2);
  memcpy(data->rowSeparator,SEP_Row, 2);
  data->showHeader = 0;
  data->shellFlgs = SHFLG_Lookaside;
  sqlite3_config(SQLITE_CONFIG_URI, 1);
  sqlite3_config(SQLITE_CONFIG_LOG, shellLog, data);
  sqlite3_config(SQLITE_CONFIG_MULTITHREAD);

        }
      }
    }else{
      utf8_printf(stderr,"%s: Error: unknown option: %s\n", Argv0, z);
      raw_printf(stderr,"Use -help for a list of options.\n");
      return 1;
    }
    data.cMode = data.mode;
  }

  if( !readStdin ){
    /* Run all arguments that do not begin with '-' as if they were separate
    ** command-line inputs, except for the argToSkip argument which contains
    ** the database filename.
    */

** ^If an error occurs while evaluating the SQL statements passed into
** sqlite3_exec(), then execution of the current statement stops and
** subsequent statements are skipped.  ^If the 5th parameter to sqlite3_exec()
** is not NULL then any error message is written into memory obtained
** from [sqlite3_malloc()] and passed back through the 5th parameter.
** To avoid memory leaks, the application should invoke [sqlite3_free()]
** on error message strings returned through the 5th parameter of
** sqlite3_exec() after the error message string is no longer needed.
** ^If the 5th parameter to sqlite3_exec() is not NULL and no errors
** occur, then sqlite3_exec() sets the pointer in its 5th parameter to
** NULL before returning.
**
** ^If an sqlite3_exec() callback returns non-zero, the sqlite3_exec()
** routine returns SQLITE_ABORT without invoking the callback again and
** without running any subsequent SQL statements.

  union {                                   /* Extra data for callback */
    NameContext *pNC;                          /* Naming context */
    int n;                                     /* A counter */
    int iCur;                                  /* A cursor number */
    SrcList *pSrcList;                         /* FROM clause */
    struct SrcCount *pSrcCount;                /* Counting column references */
    struct CCurHint *pCCurHint;                /* Used by codeCursorHint() */
    int *aiCol;                                /* array of column indexes */
  } u;
};

/* Forward declarations */
int sqlite3WalkExpr(Walker*, Expr*);
int sqlite3WalkExprList(Walker*, ExprList*);
int sqlite3WalkSelect(Walker*, Select*);

int sqlite3CorruptError(int);
int sqlite3MisuseError(int);
int sqlite3CantopenError(int);
#define SQLITE_CORRUPT_BKPT sqlite3CorruptError(__LINE__)
#define SQLITE_MISUSE_BKPT sqlite3MisuseError(__LINE__)
#define SQLITE_CANTOPEN_BKPT sqlite3CantopenError(__LINE__)

/*
** FTS3 and FTS4 both require virtual table support
*/
#if defined(SQLITE_OMIT_VIRTUALTABLE)
# undef SQLITE_ENABLE_FTS3
# undef SQLITE_ENABLE_FTS4
#endif

/*
** FTS4 is really an extension for FTS3.  It is enabled using the
** SQLITE_ENABLE_FTS3 macro.  But to avoid confusion we also call
** the SQLITE_ENABLE_FTS4 macro to serve as an alias for SQLITE_ENABLE_FTS3.
*/
#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3)

int sqlite3IsRowid(const char*);
void sqlite3GenerateRowDelete(
    Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int);
void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int);
int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int);
void sqlite3ResolvePartIdxLabel(Parse*,int);
void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,
                                     u8,u8,int,int*,int*);
void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int);
int sqlite3OpenTableAndIndices(Parse*, Table*, int, u8, int, u8*, int*, int*);
void sqlite3BeginWriteOperation(Parse*, int, int);
void sqlite3MultiWrite(Parse*);
void sqlite3MayAbort(Parse*);
void sqlite3HaltConstraint(Parse*, int, int, char*, i8, u8);
void sqlite3UniqueConstraint(Parse*, int, Index*);

int sqlite3FindDb(sqlite3*, Token*);
int sqlite3FindDbName(sqlite3 *, const char *);
int sqlite3AnalysisLoad(sqlite3*,int iDB);
void sqlite3DeleteIndexSamples(sqlite3*,Index*);
void sqlite3DefaultRowEst(Index*);
void sqlite3RegisterLikeFunctions(sqlite3*, int);
int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);

void sqlite3SchemaClear(void *);
Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int);
void sqlite3KeyInfoUnref(KeyInfo*);
KeyInfo *sqlite3KeyInfoRef(KeyInfo*);
KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*);

  return rc;
}
EXTERN int Tclsqlite3_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
EXTERN int Sqlite3_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
EXTERN int Tclsqlite3_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }

/* Because it accesses the file-system and uses persistent state, SQLite
** is not considered appropriate for safe interpreters.  Hence, we cause
** the _SafeInit() interfaces return TCL_ERROR.
*/
EXTERN int Sqlite3_SafeInit(Tcl_Interp *interp){ return TCL_ERROR; }
EXTERN int Sqlite3_SafeUnload(Tcl_Interp *interp, int flags){return TCL_ERROR;}



#ifndef SQLITE_3_SUFFIX_ONLY
int Sqlite_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
int Tclsqlite_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
int Sqlite_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
int Tclsqlite_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
#endif

#endif

#ifdef SQLITE_ENABLE_FTS3
  Tcl_SetVar2(interp, "sqlite_options", "fts3", "1", TCL_GLOBAL_ONLY);
#else
  Tcl_SetVar2(interp, "sqlite_options", "fts3", "0", TCL_GLOBAL_ONLY);
#endif

#ifdef SQLITE_ENABLE_FTS3_TOKENIZER
  Tcl_SetVar2(interp, "sqlite_options", "fts3_tokenizer", "1", TCL_GLOBAL_ONLY);
#else
  Tcl_SetVar2(interp, "sqlite_options", "fts3_tokenizer", "0", TCL_GLOBAL_ONLY);
#endif

#ifdef SQLITE_ENABLE_FTS5
  Tcl_SetVar2(interp, "sqlite_options", "fts5", "1", TCL_GLOBAL_ONLY);
#else
  Tcl_SetVar2(interp, "sqlite_options", "fts5", "0", TCL_GLOBAL_ONLY);
#endif

** This file contains C code that splits an SQL input string up into
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
*/
#include "sqliteInt.h"
#include <stdlib.h>

/* Character classes for tokenizing
**
** In the sqlite3GetToken() function, a switch() on aiClass[c] is implemented
** using a lookup table, whereas a switch() directly on c uses a binary search.
** The lookup table is much faster.  To maximize speed, and to ensure that
** a lookup table is used, all of the classes need to be small integers and
** all of them need to be used within the switch.
*/
#define CC_X          0    /* The letter 'x', or start of BLOB literal */
#define CC_KYWD       1    /* Alphabetics or '_'.  Usable in a keyword */
#define CC_ID         2    /* unicode characters usable in IDs */
#define CC_DIGIT      3    /* Digits */
#define CC_DOLLAR     4    /* '$' */
#define CC_VARALPHA   5    /* '@', '#', ':'.  Alphabetic SQL variables */
#define CC_VARNUM     6    /* '?'.  Numeric SQL variables */
#define CC_SPACE      7    /* Space characters */
#define CC_QUOTE      8    /* '"', '\'', or '`'.  String literals, quoted ids */
#define CC_QUOTE2     9    /* '['.   [...] style quoted ids */
#define CC_PIPE      10    /* '|'.   Bitwise OR or concatenate */
#define CC_MINUS     11    /* '-'.  Minus or SQL-style comment */
#define CC_LT        12    /* '<'.  Part of < or <= or <> */
#define CC_GT        13    /* '>'.  Part of > or >= */
#define CC_EQ        14    /* '='.  Part of = or == */
#define CC_BANG      15    /* '!'.  Part of != */
#define CC_SLASH     16    /* '/'.  / or c-style comment */
#define CC_LP        17    /* '(' */
#define CC_RP        18    /* ')' */
#define CC_SEMI      19    /* ';' */
#define CC_PLUS      20    /* '+' */
#define CC_STAR      21    /* '*' */
#define CC_PERCENT   22    /* '%' */
#define CC_COMMA     23    /* ',' */
#define CC_AND       24    /* '&' */
#define CC_TILDA     25    /* '~' */
#define CC_DOT       26    /* '.' */
#define CC_ILLEGAL   27    /* Illegal character */

static const unsigned char aiClass[] = {
#ifdef SQLITE_ASCII
/*         x0  x1  x2  x3  x4  x5  x6  x7  x8  x9  xa  xb  xc  xd  xe  xf */
/* 0x */   27, 27, 27, 27, 27, 27, 27, 27, 27,  7,  7, 27,  7,  7, 27, 27,
/* 1x */   27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
/* 2x */    7, 15,  8,  5,  4, 22, 24,  8, 17, 18, 21, 20, 23, 11, 26, 16,
/* 3x */    3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  5, 19, 12, 14, 13,  6,
/* 4x */    5,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
/* 5x */    1,  1,  1,  1,  1,  1,  1,  1,  0,  1,  1,  9, 27, 27, 27,  1,
/* 6x */    8,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
/* 7x */    1,  1,  1,  1,  1,  1,  1,  1,  0,  1,  1, 27, 10, 27, 25, 27,
/* 8x */    2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
/* 9x */    2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
/* Ax */    2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
/* Bx */    2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
/* Cx */    2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
/* Dx */    2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
/* Ex */    2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
/* Fx */    2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2
#endif
#ifdef SQLITE_EBCDIC
/*         x0  x1  x2  x3  x4  x5  x6  x7  x8  x9  xa  xb  xc  xd  xe  xf */
/* 0x */   27, 27, 27, 27, 27,  7, 27, 27, 27, 27, 27, 27,  7,  7, 27, 27,
/* 1x */   27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
/* 2x */   27, 27, 27, 27, 27,  7, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
/* 3x */   27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
/* 4x */    7, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 12, 17, 20, 10,
/* 5x */   24, 27, 27, 27, 27, 27, 27, 27, 27, 27, 15,  4, 21, 18, 19, 27,
/* 6x */   11, 16, 27, 27, 27, 27, 27, 27, 27, 27, 27, 23, 22,  1, 13,  7,
/* 7x */   27, 27, 27, 27, 27, 27, 27, 27, 27,  8,  5,  5,  5,  8, 14,  8,
/* 8x */   27,  1,  1,  1,  1,  1,  1,  1,  1,  1, 27, 27, 27, 27, 27, 27,
/* 9x */   27,  1,  1,  1,  1,  1,  1,  1,  1,  1, 27, 27, 27, 27, 27, 27,
/* 9x */   25,  1,  1,  1,  1,  1,  1,  0,  1,  1, 27, 27, 27, 27, 27, 27,
/* Bx */   27, 27, 27, 27, 27, 27, 27, 27, 27, 27,  9, 27, 27, 27, 27, 27,
/* Cx */   27,  1,  1,  1,  1,  1,  1,  1,  1,  1, 27, 27, 27, 27, 27, 27,
/* Dx */   27,  1,  1,  1,  1,  1,  1,  1,  1,  1, 27, 27, 27, 27, 27, 27,
/* Ex */   27, 27,  1,  1,  1,  1,  1,  0,  1,  1, 27, 27, 27, 27, 27, 27,
/* Fx */    3,  3,  3,  3,  3,  3,  3,  3,  3,  3, 27, 27, 27, 27, 27, 27,
#endif
};

/*
** The charMap() macro maps alphabetic characters (only) into their
** lower-case ASCII equivalent.  On ASCII machines, this is just
** an upper-to-lower case map.  On EBCDIC machines we also need
** to adjust the encoding.  The mapping is only valid for alphabetics
** which are the only characters for which this feature is used. 
**
** Used by keywordhash.h
*/
#ifdef SQLITE_ASCII
# define charMap(X) sqlite3UpperToLower[(unsigned char)X]
#endif
#ifdef SQLITE_EBCDIC
# define charMap(X) ebcdicToAscii[(unsigned char)X]
const unsigned char ebcdicToAscii[] = {

/*
** The sqlite3KeywordCode function looks up an identifier to determine if
** it is a keyword.  If it is a keyword, the token code of that keyword is 
** returned.  If the input is not a keyword, TK_ID is returned.
**
** The implementation of this routine was generated by a program,
** mkkeywordhash.c, located in the tool subdirectory of the distribution.
** The output of the mkkeywordhash.c program is written into a file
** named keywordhash.h and then included into this source file by
** the #include below.
*/
#include "keywordhash.h"

/* Make the IdChar function accessible from ctime.c */
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
int sqlite3IsIdChar(u8 c){ return IdChar(c); }
#endif


/*
** Return the length (in bytes) of the token that begins at z[0]. 
** Store the token type in *tokenType before returning.
*/
int sqlite3GetToken(const unsigned char *z, int *tokenType){
  int i, c;
  switch( aiClass[*z] ){  /* Switch on the character-class of the first byte
                          ** of the token. See the comment on the CC_ defines
                          ** above. */
    case CC_SPACE: {
      testcase( z[0]==' ' );
      testcase( z[0]=='\t' );
      testcase( z[0]=='\n' );
      testcase( z[0]=='\f' );
      testcase( z[0]=='\r' );
      for(i=1; sqlite3Isspace(z[i]); i++){}
      *tokenType = TK_SPACE;
      return i;
    }
    case CC_MINUS: {
      if( z[1]=='-' ){
        for(i=2; (c=z[i])!=0 && c!='\n'; i++){}
        *tokenType = TK_SPACE;   /* IMP: R-22934-25134 */
        return i;
      }
      *tokenType = TK_MINUS;
      return 1;
    }
    case CC_LP: {
      *tokenType = TK_LP;
      return 1;
    }
    case CC_RP: {
      *tokenType = TK_RP;
      return 1;
    }
    case CC_SEMI: {
      *tokenType = TK_SEMI;
      return 1;
    }
    case CC_PLUS: {
      *tokenType = TK_PLUS;
      return 1;
    }
    case CC_STAR: {
      *tokenType = TK_STAR;
      return 1;
    }
    case CC_SLASH: {
      if( z[1]!='*' || z[2]==0 ){
        *tokenType = TK_SLASH;
        return 1;
      }
      for(i=3, c=z[2]; (c!='*' || z[i]!='/') && (c=z[i])!=0; i++){}
      if( c ) i++;
      *tokenType = TK_SPACE;   /* IMP: R-22934-25134 */
      return i;
    }
    case CC_PERCENT: {
      *tokenType = TK_REM;
      return 1;
    }
    case CC_EQ: {
      *tokenType = TK_EQ;
      return 1 + (z[1]=='=');
    }
    case CC_LT: {
      if( (c=z[1])=='=' ){
        *tokenType = TK_LE;
        return 2;
      }else if( c=='>' ){
        *tokenType = TK_NE;
        return 2;
      }else if( c=='<' ){
        *tokenType = TK_LSHIFT;
        return 2;
      }else{
        *tokenType = TK_LT;
        return 1;
      }
    }
    case CC_GT: {
      if( (c=z[1])=='=' ){
        *tokenType = TK_GE;
        return 2;
      }else if( c=='>' ){
        *tokenType = TK_RSHIFT;
        return 2;
      }else{
        *tokenType = TK_GT;
        return 1;
      }
    }
    case CC_BANG: {
      if( z[1]!='=' ){
        *tokenType = TK_ILLEGAL;
        return 2;
      }else{
        *tokenType = TK_NE;
        return 2;
      }
    }
    case CC_PIPE: {
      if( z[1]!='|' ){
        *tokenType = TK_BITOR;
        return 1;
      }else{
        *tokenType = TK_CONCAT;
        return 2;
      }
    }
    case CC_COMMA: {
      *tokenType = TK_COMMA;
      return 1;
    }
    case CC_AND: {
      *tokenType = TK_BITAND;
      return 1;
    }
    case CC_TILDA: {
      *tokenType = TK_BITNOT;
      return 1;
    }
    case CC_QUOTE: {


      int delim = z[0];
      testcase( delim=='`' );
      testcase( delim=='\'' );
      testcase( delim=='"' );
      for(i=1; (c=z[i])!=0; i++){
        if( c==delim ){
          if( z[i+1]==delim ){

        *tokenType = TK_ID;
        return i+1;
      }else{
        *tokenType = TK_ILLEGAL;
        return i;
      }
    }
    case CC_DOT: {
#ifndef SQLITE_OMIT_FLOATING_POINT
      if( !sqlite3Isdigit(z[1]) )
#endif
      {
        *tokenType = TK_DOT;
        return 1;
      }
      /* If the next character is a digit, this is a floating point
      ** number that begins with ".".  Fall thru into the next case */
    }
    case CC_DIGIT: {

      testcase( z[0]=='0' );  testcase( z[0]=='1' );  testcase( z[0]=='2' );
      testcase( z[0]=='3' );  testcase( z[0]=='4' );  testcase( z[0]=='5' );
      testcase( z[0]=='6' );  testcase( z[0]=='7' );  testcase( z[0]=='8' );
      testcase( z[0]=='9' );
      *tokenType = TK_INTEGER;
#ifndef SQLITE_OMIT_HEX_INTEGER
      if( z[0]=='0' && (z[1]=='x' || z[1]=='X') && sqlite3Isxdigit(z[2]) ){

#endif
      while( IdChar(z[i]) ){
        *tokenType = TK_ILLEGAL;
        i++;
      }
      return i;
    }
    case CC_QUOTE2: {
      for(i=1, c=z[0]; c!=']' && (c=z[i])!=0; i++){}
      *tokenType = c==']' ? TK_ID : TK_ILLEGAL;
      return i;
    }
    case CC_VARNUM: {
      *tokenType = TK_VARIABLE;
      for(i=1; sqlite3Isdigit(z[i]); i++){}
      return i;
    }

    case CC_DOLLAR:


    case CC_VARALPHA: {

      int n = 0;
      testcase( z[0]=='$' );  testcase( z[0]=='@' );
      testcase( z[0]==':' );  testcase( z[0]=='#' );
      *tokenType = TK_VARIABLE;
      for(i=1; (c=z[i])!=0; i++){
        if( IdChar(c) ){
          n++;

        }else{
          break;
        }
      }
      if( n==0 ) *tokenType = TK_ILLEGAL;
      return i;
    }
    case CC_KYWD: {
      for(i=1; aiClass[z[i]]<=CC_KYWD; i++){}
      if( IdChar(z[i]) ){
        /* This token started out using characters that can appear in keywords,
        ** but z[i] is a character not allowed within keywords, so this must
        ** be an identifier instead */
        i++;
        break;
      }
      *tokenType = TK_ID;
      return keywordCode((char*)z, i, tokenType);
    }
#ifndef SQLITE_OMIT_BLOB_LITERAL
    case CC_X: {
      testcase( z[0]=='x' ); testcase( z[0]=='X' );
      if( z[1]=='\'' ){
        *tokenType = TK_BLOB;
        for(i=2; sqlite3Isxdigit(z[i]); i++){}
        if( z[i]!='\'' || i%2 ){
          *tokenType = TK_ILLEGAL;
          while( z[i] && z[i]!='\'' ){ i++; }
        }
        if( z[i] ) i++;
        return i;
      }
      /* If it is not a BLOB literal, then it must be an ID, since no
      ** SQL keywords start with the letter 'x'.  Fall through */
    }
#endif
    case CC_ID: {

      i = 1;
      break;
    }

    default: {
      *tokenType = TK_ILLEGAL;
      return 1;
    }
  }
  while( IdChar(z[i]) ){ i++; }
  *tokenType = TK_ID;
  return i;
}

/*
** Run the parser on the given SQL string.  The parser structure is
** passed in.  An SQLITE_ status code is returned.  If an error occurs
** then an and attempt is made to write an error message into 
** memory obtained from sqlite3_malloc() and to make *pzErrMsg point to that

  if( !isView ){
    int addr1 = 0;        /* Address of jump instruction */
    int bReplace = 0;     /* True if REPLACE conflict resolution might happen */

    /* Do constraint checks. */
    assert( regOldRowid>0 );
    sqlite3GenerateConstraintChecks(pParse, pTab, aRegIdx, iDataCur, iIdxCur,
        regNewRowid, regOldRowid, chngKey, onError, labelContinue, &bReplace,
        aXRef);

    /* Do FK constraint checks. */
    if( hasFK ){
      sqlite3FkCheck(pParse, pTab, regOldRowid, 0, aXRef, chngKey);
    }

    /* Delete the index entries associated with the current record.  */

int sqlite3VdbeGoto(Vdbe*,int);
int sqlite3VdbeLoadString(Vdbe*,int,const char*);
void sqlite3VdbeMultiLoad(Vdbe*,int,const char*,...);
int sqlite3VdbeAddOp3(Vdbe*,int,int,int,int);
int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int);
int sqlite3VdbeAddOp4Dup8(Vdbe*,int,int,int,int,const u8*,int);
int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int);
void sqlite3VdbeEndCoroutine(Vdbe*,int);
#if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS)
  void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N);
#else
# define sqlite3VdbeVerifyNoMallocRequired(A,B)
#endif
VdbeOp *sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp, int iLineno);
void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);

  int p3,             /* The P3 operand */
  int p4              /* The P4 operand as an integer */
){
  int addr = sqlite3VdbeAddOp3(p, op, p1, p2, p3);
  sqlite3VdbeChangeP4(p, addr, SQLITE_INT_TO_PTR(p4), P4_INT32);
  return addr;
}

/* Insert the end of a co-routine
*/
void sqlite3VdbeEndCoroutine(Vdbe *v, int regYield){
  sqlite3VdbeAddOp1(v, OP_EndCoroutine, regYield);

  /* Clear the temporary register cache, thereby ensuring that each
  ** co-routine has its own independent set of registers, because co-routines
  ** might expect their registers to be preserved across an OP_Yield, and
  ** that could cause problems if two or more co-routines are using the same
  ** temporary register.
  */
  v->pParse->nTempReg = 0;
  v->pParse->nRangeReg = 0;
}

/*
** Create a new symbolic label for an instruction that has yet to be
** coded.  The symbolic label is really just a negative number.  The
** label can be used as the P2 value of an operation.  Later, when
** the label is resolved to a specific address, the VDBE will scan
** through its operation list and change all values of P2 which match

    ** checksums must be recomputed when the transaction is committed.  */
    if( iFirst && (p->pDirty || isCommit==0) ){
      u32 iWrite = 0;
      VVA_ONLY(rc =) sqlite3WalFindFrame(pWal, p->pgno, &iWrite);
      assert( rc==SQLITE_OK || iWrite==0 );
      if( iWrite>=iFirst ){
        i64 iOff = walFrameOffset(iWrite, szPage) + WAL_FRAME_HDRSIZE;
        void *pData;
        if( pWal->iReCksum==0 || iWrite<pWal->iReCksum ){
          pWal->iReCksum = iWrite;
        }
#if defined(SQLITE_HAS_CODEC)
        if( (pData = sqlite3PagerCodec(p))==0 ) return SQLITE_NOMEM;
#else
        pData = p->pData;
#endif
        rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOff);
        if( rc ) return rc;
        p->flags &= ~PGHDR_WAL_APPEND;
        continue;
      }
    }

    iFrame++;

/*
** Return the cost of sorting nRow rows, assuming that the keys have 
** nOrderby columns and that the first nSorted columns are already in
** order.
*/
static LogEst whereSortingCost(

  LogEst nRow,
  int nOrderBy,
  int nSorted
){
  /* TUNING: Estimated cost of a full external sort, where N is 
  ** the number of rows to sort is:
  **

  **
  ** The (Y/X) term is implemented using stack variable rScale
  ** below.  */
  LogEst rScale, rSortCost;
  assert( nOrderBy>0 && 66==sqlite3LogEst(100) );
  rScale = sqlite3LogEst((nOrderBy-nSorted)*100/nOrderBy) - 66;
  rSortCost = nRow + estLog(nRow) + rScale + 16;








  return rSortCost;
}

/*
** Given the list of WhereLoop objects at pWInfo->pLoops, this routine
** attempts to find the lowest cost path that visits each WhereLoop
** once.  This path is then loaded into the pWInfo->a[].pWLoop fields.

                       iLoop, pWLoop, &revMask);
        }else{
          revMask = pFrom->revLoop;
        }
        if( isOrdered>=0 && isOrdered<nOrderBy ){
          if( aSortCost[isOrdered]==0 ){
            aSortCost[isOrdered] = whereSortingCost(
                nRowEst, nOrderBy, isOrdered
            );
          }
          rCost = sqlite3LogEstAdd(rUnsorted, aSortCost[isOrdered]);

          WHERETRACE(0x002,
              ("---- sort cost=%-3d (%d/%d) increases cost %3d to %-3d\n",
               aSortCost[isOrdered], (nOrderBy-isOrdered), nOrderBy, 

    ALTER TABLE t1 ADD c;
    SELECT * FROM t1;
  }
} {1 100 {} 2 300 {}}
if {!$has_codec} {
  do_test alter3-3.3 {
    get_file_format
  } {4}
}
ifcapable schema_version {
  do_test alter3-3.4 {
    execsql {
      PRAGMA schema_version;
    }
  } {11}

    ALTER TABLE t1 ADD c DEFAULT 'hello world';
    SELECT * FROM t1;
  }
} {1 100 {hello world} 2 300 {hello world}}
if {!$has_codec} {
  do_test alter3-4.3 {
    get_file_format
  } {4}
}
ifcapable schema_version {
  do_test alter3-4.4 {
    execsql {
      PRAGMA schema_version;
    }
  } {21}

        PRAGMA aux.schema_version;
      }
    } {31}
  }
  if {!$has_codec} {
    do_test alter3-5.5 {
      list [get_file_format test2.db] [get_file_format]
    } {4 4}
  }
  do_test alter3-5.6 {
    execsql {
      ALTER TABLE aux.t1 ADD COLUMN d DEFAULT 1000;
      SELECT sql FROM aux.sqlite_master;
    }
  } {{CREATE TABLE t1(a,b, c VARCHAR(128), d DEFAULT 1000)}}

    } {1}
    do_test alter3-7.2 {
      execsql {
        CREATE TABLE abc(a, b, c);
        ALTER TABLE abc ADD d DEFAULT NULL;
      }
      get_file_format
    } {4}
    do_test alter3-7.3 {
      execsql {
        ALTER TABLE abc ADD e DEFAULT 10;
      }
      get_file_format
    } {4}
    do_test alter3-7.4 {
      execsql {
        ALTER TABLE abc ADD f DEFAULT NULL;
      }
      get_file_format
    } {4}
    do_test alter3-7.5 {
      execsql {
        VACUUM;
      }
      get_file_format
    } {1}
  }

  SELECT * FROM t1 WHERE x='B' AND y>25 AND z=?;
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX i1 (x=? AND y>?)}
}


finish_test

    set val $i
    do_execsql_test 20.3.$i {
      SELECT count(*) FROM sqlite_stat3 WHERE sample=$val
    } {1}
}

finish_test

do_eqp_test 1.8 {
  SELECT * FROM t1 WHERE a=13 AND c=150;
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_c (c=?)}
}

finish_test

    SELECT a FROM ta;
    SELECT b FROM tb;
  }
} {a b}

test_restore_config_pagecache
finish_test

} -test {
  faultsim_test_result {0 {1 1 3 3 5 5 7 7 9 9}} {1 {disk I/O error}}
  catchsql ROLLBACK
  faultsim_integrity_check
}

finish_test

# 2013-08-02:  Silently ignore database name qualifiers in CHECK constraints.
#
do_execsql_test 8.1 {
  CREATE TABLE t810(a, CHECK( main.t810.a>0 ));
  CREATE TABLE t811(b, CHECK( xyzzy.t811.b BETWEEN 5 AND 10 ));
} {}

# Make sure check constraints involving the ROWID are not ignored
#
do_execsql_test 9.1 {
  CREATE TABLE t1(
    a INTEGER PRIMARY KEY,
    b INTEGER NOT NULL CONSTRAINT 'b-check' CHECK( b>a ),
    c INTEGER NOT NULL CONSTRAINT 'c-check' CHECK( c>rowid*2 ),
    d INTEGER NOT NULL CONSTRAINT 'd-check' CHECK( d BETWEEN b AND c )
  );
  INSERT INTO t1(a,b,c,d) VALUES(1,2,4,3),(2,4,6,5),(3,10,30,20);
} {}
do_catchsql_test 9.2 {
  UPDATE t1 SET b=0 WHERE a=1;
} {1 {CHECK constraint failed: b-check}}
do_catchsql_test 9.3 {
  UPDATE t1 SET c=a*2 WHERE a=1;
} {1 {CHECK constraint failed: c-check}}



finish_test

      DELETE FROM t2 WHERE c=1;
    }
  }
  } msg] $msg
} {1 {database disk image is malformed}}

finish_test

  INSERT INTO t1 VALUES(zeroblob(300));
  INSERT INTO t1 VALUES(zeroblob(600));
} {}
do_test 6.1 {
  db close
  hexio_write test.db 616 8FFFFFFF7F02
  sqlite3 db test.db

  execsql { DELETE FROM t1 WHERE rowid=2 }
} {}

#-------------------------------------------------------------------------
# See what happens if the sqlite_master entry associated with a PRIMARY
# KEY or UNIQUE index is removed. 
#

    SELECT rowid FROM t6 WHERE likelihood(a=0, 0.1) AND b='xyz' AND c=0
  } {
    0 0 0 {SEARCH TABLE t6 USING INDEX t6i1 (a=? AND b=?)}
  }
}

finish_test

do_test 2.1 {
  sqlite3_blob_open db main q1 s 86 1 B
  list [catch { sqlite3_blob_write $B 86 "1" 1 } msg] $msg
} {1 SQLITE_ERROR}
sqlite3_blob_close $B

finish_test

# EVIDENCE-OF: R-25894-51060 Calling this routine with a null pointer
# (such as would be returned by a failed call to sqlite3_blob_open()) is
# a harmless no-op.
#
do_test 4.0 { sqlite3_blob_close 0 } {}

finish_test

} [list \
    [string repeat [binary format c 1] 24] \
    [string repeat [binary format c 1] 45] \
]


finish_test

} {
  2 xyz ........................................
}



finish_test

  db2 eval COMMIT
  wal_checkpoint_v2 db truncate
} {0 0 0}



finish_test

    sqlite3_finalize $stmt
    set ret
  } $use_stmt
}


finish_test

} {1 2}
do_execsql_test 5.3 {
  DELETE FROM t1 WHERE a = 2;
} {}


finish_test

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

set ::testprefix fts3atoken

proc escape_string {str} {
  set out ""
  foreach char [split $str ""] {
    scan $char %c i
    if {$i<=127} {
      append out $char
    } else {
      append out [format {\x%.4x} $i]
    }
  }
  set out
}

#--------------------------------------------------------------------------
# Test cases fts3atoken-1.* are the warm-body test for the SQL scalar
# function fts3_tokenizer(). The procedure is as follows:
#
#   1: Verify that there is no such fts3 tokenizer as 'blah'.
#
#   2: Query for the built-in tokenizer 'simple'. Insert a copy of the
#      retrieved value as tokenizer 'blah'.
#
#   3: Test that the value returned for tokenizer 'blah' is now the
#      same as that retrieved for 'simple'.
#
#   4: Test that it is now possible to create an fts3 table using 
#      tokenizer 'blah' (it was not possible in step 1).
#
#   5: Test that the table created to use tokenizer 'blah' is usable.
#
ifcapable fts3_tokenizer {
  do_test fts3atoken-1.1 {
    catchsql {
      CREATE VIRTUAL TABLE t1 USING fts3(content, tokenize blah);
    }
  } {1 {unknown tokenizer: blah}}
  do_test fts3atoken-1.2 {
    execsql {
      SELECT fts3_tokenizer('blah', fts3_tokenizer('simple')) IS NULL;
    }
  } {0}
  do_test fts3atoken-1.3 {
    execsql {
      SELECT fts3_tokenizer('blah') == fts3_tokenizer('simple');
    }
  } {1}
  do_test fts3atoken-1.4 {
    catchsql {
      CREATE VIRTUAL TABLE t1 USING fts3(content, tokenize blah);
    }
  } {0 {}}
  do_test fts3atoken-1.5 {
    execsql {
      INSERT INTO t1(content) VALUES('There was movement at the station');
      INSERT INTO t1(content) VALUES('For the word has passed around');
      INSERT INTO t1(content) VALUES('That the colt from ol regret had got');
      SELECT content FROM t1 WHERE content MATCH 'movement'
    }
  } {{There was movement at the station}}
} else {
  do_catchsql_test 1.6 {
    SELECT fts3_tokenizer('blah', fts3_tokenizer('simple')) IS NULL;
  } {1 {fts3tokenize: disabled - rebuild with -DSQLITE_ENABLE_FTS3_TOKENIZER}}
}

#--------------------------------------------------------------------------
# Test cases fts3atoken-2.* test error cases in the scalar function based
# API for getting and setting tokenizers.
#
do_test fts3atoken-2.1 {
  catchsql {
    SELECT fts3_tokenizer('nosuchtokenizer');
  }
} {1 {unknown tokenizer: nosuchtokenizer}}

#--------------------------------------------------------------------------
# Test cases fts3atoken-3.* test the three built-in tokenizers with a
# simple input string via the built-in test function. This is as much
# to test the test function as the tokenizer implementations.
#
do_test fts3atoken-3.1 {
  execsql {
    SELECT fts3_tokenizer_test('simple', 'I don''t see how');
  }
} {{0 i I 1 don don 2 t t 3 see see 4 how how}}
do_test fts3atoken-3.2 {
  execsql {
    SELECT fts3_tokenizer_test('porter', 'I don''t see how');
  }
} {{0 i I 1 don don 2 t t 3 see see 4 how how}}
ifcapable icu {
  do_test fts3atoken-3.3 {
    execsql {
      SELECT fts3_tokenizer_test('icu', 'I don''t see how');
    }
  } {{0 i I 1 don't don't 2 see see 3 how how}}
}

#--------------------------------------------------------------------------
# Test cases fts3atoken-4.* test the ICU tokenizer. In practice, this
# tokenizer only has two modes - "thai" and "everybody else". Some other
# Asian languages (Lao, Khmer etc.) require the same special treatment as 
# Thai, but ICU doesn't support them yet.
#
ifcapable icu {

  proc do_icu_test {name locale input output} {
    set ::out [db eval { SELECT fts3_tokenizer_test('icu', $locale, $input) }]
    do_test $name {
      lindex $::out 0
    } $output
  }
  
  do_icu_test fts3atoken-4.1 en_US  {}   {}
  do_icu_test fts3atoken-4.2 en_US {Test cases fts3} [list \
    0 test Test 1 cases cases 2 fts3 fts3
  ]

  # The following test shows that ICU is smart enough to recognise
  # Thai chararacters, even when the locale is set to English/United 
  # States.
  #
  set input "\u0e2d\u0e30\u0e44\u0e23\u0e19\u0e30\u0e04\u0e23\u0e31\u0e1a"
  set output    "0 \u0e2d\u0e30\u0e44\u0e23 \u0e2d\u0e30\u0e44\u0e23 "
  append output "1 \u0e19\u0e30 \u0e19\u0e30 "
  append output "2 \u0e04\u0e23\u0e31\u0e1a \u0e04\u0e23\u0e31\u0e1a"

  do_icu_test fts3atoken-4.3 th_TH  $input $output
  do_icu_test fts3atoken-4.4 en_US  $input $output

  # ICU handles an unknown locale by falling back to the default.
  # So this is not an error.
  do_icu_test fts3atoken-4.5 MiddleOfTheOcean  $input $output

  set    longtoken "AReallyReallyLongTokenOneThatWillSurelyRequire"
  append longtoken "AReallocInTheIcuTokenizerCode"

  set    input "short tokens then "
  append input $longtoken
  set    output "0 short short "
  append output "1 tokens tokens "
  append output "2 then then "
  append output "3 [string tolower $longtoken] $longtoken"

  do_icu_test fts3atoken-4.6 MiddleOfTheOcean  $input $output
  do_icu_test fts3atoken-4.7 th_TH  $input $output
  do_icu_test fts3atoken-4.8 en_US  $input $output

  do_execsql_test 5.1 {
    CREATE VIRTUAL TABLE x1 USING fts3(name,TOKENIZE icu en_US);
    insert into x1 (name) values (NULL);
    insert into x1 (name) values (NULL);
    delete from x1;
  }

  proc cp_to_str {codepoint_list} {
    set fmt [string repeat %c [llength $codepoint_list]]
    eval [list format $fmt] $codepoint_list
  }

  do_test 5.2 {
    set str [cp_to_str {19968 26085 32822 32645 27874 23433 20986}]
    execsql { INSERT INTO x1 VALUES($str) }
  } {}
}

do_test fts3atoken-internal {
  execsql { SELECT fts3_tokenizer_internal_test() }
} {ok}

#-------------------------------------------------------------------------
# Test empty tokenizer names.
#
do_catchsql_test 6.1.1 {
  CREATE VIRTUAL TABLE t3 USING fts4(tokenize="");
} {1 {unknown tokenizer: }}
do_catchsql_test 6.1.2 {
  CREATE VIRTUAL TABLE t3 USING fts4(tokenize=);
} {1 {unknown tokenizer: }}
do_catchsql_test 6.1.3 {
  CREATE VIRTUAL TABLE t3 USING fts4(tokenize="   ");
} {1 {unknown tokenizer:    }}

do_catchsql_test 6.2.1 {
  SELECT fts3_tokenizer(NULL);
} {1 {unknown tokenizer: }}
ifcapable fts3_tokenizer {
  do_catchsql_test 6.2.2 {
    SELECT fts3_tokenizer(NULL, X'1234567812345678');
  } {1 {argument type mismatch}}
  do_catchsql_test 6.2.3 {
    SELECT fts3_tokenizer(NULL, X'12345678');
  } {1 {argument type mismatch}}
}


finish_test

}
do_execsql_test 4.2.2 {
  SELECT * FROM t01 WHERE t01 MATCH 'b';
  INSERT INTO t01(t01) VALUES('integrity-check');
} {}

finish_test

do_simple_expr_test 3.8 { "abc"* } { PHRASE 3 0 abc }
do_simple_expr_test 3.8 { "ab*c" } { PHRASE 3 0 ab+ c }

do_icu_expr_test    3.9 { "ab*c" } { PHRASE 3 0 ab+ * c }
do_icu_expr_test    3.10 { ab*c } { AND {PHRASE 3 0 ab+} {PHRASE 3 0 c}}

finish_test

do_execsql_test 2.4 { SELECT * FROM ft3, ft2 WHERE y MATCH x; } {abc abc}

do_catchsql_test 2.5 { 
  SELECT * FROM ft3, ft2 WHERE y MATCH x AND x MATCH y; 
} {1 {unable to use function MATCH in the requested context}}

finish_test

    }
    lappend r2 $M
  }

  do_execsql_test 11.1.$tn.2  {
    SELECT rowid, mit(matchinfo(tt, 'b')) FROM tt WHERE tt MATCH $expr
  } $r2


  do_execsql_test 11.1.$tn.2  {
    SELECT rowid, mit(matchinfo(tt, 'b')) FROM tt WHERE tt MATCH $expr
  } $r2
}
set sqlite_fts3_enable_parentheses 0

do_execsql_test 12.1 {
  INSERT INTO tt (rowid, c4, c45) VALUES(1, 'abc', 'abc');
  SELECT mit(matchinfo(tt, 'b')) FROM tt WHERE tt MATCH 'abc';
} [list [list [expr 1<<4] [expr 1<<(45-32)]]]

set sqlite_fts3_enable_parentheses 0
finish_test

  2 {(A) x x x x x x x x x x x B} 
  1 {(A) (B) (C)}
}


set sqlite_fts3_enable_parentheses 0
finish_test

} {64}




set sqlite_fts3_enable_parentheses 0
finish_test

do_execsql_test 5.4 {
  CREATE VIRTUAL TABLE t5 USING fts4(a, prefix="1,2,3");
  INSERT INTO t5(t5) VALUES('integrity-check');
} {}

finish_test

do_catchsql_test 11.1 {
  CREATE VIRTUAL TABLE x1 USING fts4(content=x1);
} {1 {vtable constructor called recursively: x1}}


finish_test

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



finish_test

    }
    execsql { SELECT max(level) FROM x1_segdir }
  } {1}
}


finish_test

  for {set i 0} {$i < 50} {incr i} {
    execsql { 
      INSERT INTO t4(docid, content, lid) VALUES($i, 'The Quick Brown Fox', $i) 
    }
  }
}

ifcapable fts3_tokenizer {
  do_test 4.1.0 {
    reset_db
    set ptr [fts3_test_tokenizer]
    execsql { SELECT fts3_tokenizer('testtokenizer', $ptr) }
    build_multilingual_db_2 db
  } {}
  do_execsql_test 4.1.1 {
    SELECT docid FROM t4 WHERE t4 MATCH 'quick';
  } {0}
  do_execsql_test 4.1.2 {
    SELECT docid FROM t4 WHERE t4 MATCH 'quick' AND lid=1;
  } {}
  do_execsql_test 4.1.3 {
    SELECT docid FROM t4 WHERE t4 MATCH 'Quick' AND lid=1;
  } {1}
  for {set i 0} {$i < 50} {incr i} {
    do_execsql_test 4.1.4.$i {
      SELECT count(*) FROM t4 WHERE t4 MATCH 'fox' AND lid=$i;
    } [expr 0==($i%2)]
  }
  do_catchsql_test 4.1.5 {
    INSERT INTO t4(content, lid) VALUES('hello world', 101)
  } {1 {SQL logic error or missing database}}
}

#-------------------------------------------------------------------------
# Test cases 5.*
#
# The following test cases are designed to detect a 32-bit overflow bug
# that existed at one point.
#

  SELECT count(*) FROM t2 WHERE t2 MATCH 'no';
  SELECT count(*) FROM t2 WHERE t2 MATCH 'yes';
  SELECT count(*) FROM t2 WHERE t2 MATCH 'yep';
} {0 1 1 0 1 1}

finish_test

      INSERT INTO ft2(ft2) VALUES('integrity-check');
    }
  }
  eval $tcl2
}

finish_test

  do_test fuzz3-$ii.$iNew.[incr iTest] {
    db_checksum
  } $::cksum
}

test_restore_config_pagecache
finish_test

do_test 2.14 { sqlite3_errmsg db } {not an error}

do_test 2.15 { sqlite3_finalize $stmt } {SQLITE_CORRUPT}
do_test 2.16 { sqlite3_errcode db } {SQLITE_CORRUPT}
do_test 2.17 { sqlite3_errmsg db } {database disk image is malformed}

finish_test

  execsql { SELECT * FROM x2 WHERE x = str('19') AND y = str('4') }
} -test {
  faultsim_test_result [list 0 {}]
}


finish_test

  } -test {
    faultsim_test_result [list 0 [lrange $::vals 0 $::j]]
  }
}


finish_test

} {}

do_execsql_test 1.2 {
  SELECT sum(length(c2)) FROM t1;
} [expr 2000 * 2000]

finish_test

  UPDATE t2 SET c=c-1;
  PRAGMA lock_status;
} {main unlocked temp unknown aux1 exclusive}
db close
forcedelete test.db
sqlite3 db test.db


do_execsql_test pragma2-5.1 {
  PRAGMA page_size=16384;
  CREATE TABLE t1(x);
  PRAGMA cache_size=2;
  PRAGMA cache_spill=YES;
  PRAGMA cache_spill;
} {2}

ifcapable !curdir {
  finish_test
  return
}

source $testdir/malloc_common.tcl

forcedelete bak.db
unset -nocomplain defaultVfs
set defaultVfs [file_control_vfsname db]
db close

do_test quota-1.1 { sqlite3_quota_initialize nosuchvfs 1 } {SQLITE_ERROR}
do_test quota-1.2 { sqlite3_quota_initialize "" 1 }        {SQLITE_OK}
do_test quota-1.3 { sqlite3_quota_initialize "" 1 }        {SQLITE_MISUSE}

} -select {
  SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h ASC;
} -result {
  2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
}

finish_test