-o $@ $(TOP)/src/shell.c libsqlite3.la \
		$(LIBREADLINE) $(TLIBS) -rpath "$(libdir)"

mptester$(EXE):	sqlite3.c $(TOP)/mptest/mptest.c
	$(LTLINK) -o $@ -I. $(TOP)/mptest/mptest.c sqlite3.c \
		$(TLIBS) -rpath "$(libdir)"



mptest:	mptester$(EXE)
	rm -f mptest1.db
	./mptester$(EXE) mptest1.db $(TOP)/mptest/crash01.test
	rm -f mptest2.db
	./mptester$(EXE) mptest2.db $(TOP)/mptest/multiwrite01.test









# This target creates a directory named "tsrc" and fills it with
# copies of all of the C source code and header files needed to
# 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.
#

		-o $@ $(TOP)/src/shell.c libsqlite3.la \
		$(LIBREADLINE) $(TLIBS) -rpath "$(libdir)"

mptester$(EXE):	sqlite3.c $(TOP)/mptest/mptest.c
	$(LTLINK) -o $@ -I. $(TOP)/mptest/mptest.c sqlite3.c \
		$(TLIBS) -rpath "$(libdir)"

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


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


# This target creates a directory named "tsrc" and fills it with
# copies of all of the C source code and header files needed to
# 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.
#

!ENDIF

# Set this non-0 to enable full warnings (-W4, etc) when compiling.
#
!IFNDEF USE_FULLWARN
USE_FULLWARN = 0
!ENDIF















# If necessary, create a list of harmless compiler warnings to disable when
# compiling the build tools.  For the SQLite source code itself, warnings,
# if any, will be disabled from within it.
#
!IFNDEF NO_WARN
!IF $(USE_FULLWARN)!=0
NO_WARN = -wd4054 -wd4055 -wd4100 -wd4127 -wd4152 -wd4189 -wd4206 -wd4210
NO_WARN = $(NO_WARN) -wd4232 -wd4244 -wd4305 -wd4306 -wd4702 -wd4706
!ENDIF
................................................................................

NSDKLIBPATH = $(NSDKLIBPATH:\\=\)

# 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) -W4
!ELSE
BCC = $(NCC) -W3
!ENDIF

# Check if assembly code listings should be generated for the source
# code files to be compiled.
#
!IF $(USE_LISTINGS)!=0
BCC = $(BCC) -FAcs
................................................................................
!ENDIF

# C compiler and options for use in building executables that
# will run on the target platform.  (BCC and TCC are usually the
# same unless your are cross-compiling.)
#
!IF $(USE_FULLWARN)!=0
TCC = $(CC) -W4 -DINCLUDE_MSVC_H=1
!ELSE
TCC = $(CC) -W3
!ENDIF

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





























































































# Check if assembly code listings should be generated for the source
# code files to be compiled.
#
!IF $(USE_LISTINGS)!=0
TCC = $(TCC) -FAcs
!ENDIF
................................................................................
!ENDIF

# If a platform was set, force the linker to target that.
# Note that the vcvars*.bat family of batch files typically
# set this for you.  Otherwise, the linker will attempt
# to deduce the binary type based on the object files.
!IFDEF PLATFORM



LTLINKOPTS = /MACHINE:$(PLATFORM)
LTLIBOPTS = /MACHINE:$(PLATFORM)
!ENDIF

# When compiling for use in the WinRT environment, the following
# linker option must be used to mark the executable as runnable
# only in the context of an application container.
#
!IF $(FOR_WINRT)!=0
................................................................................

libsqlite3.lib:	$(LIBOBJ)
	$(LTLIB) $(LTLIBOPTS) /OUT:$@ $(LIBOBJ) $(TLIBS)

libtclsqlite3.lib:	tclsqlite.lo libsqlite3.lib
	$(LTLIB) $(LTLIBOPTS) $(LTLIBPATHS) /OUT:$@ tclsqlite.lo libsqlite3.lib $(LIBTCL:tcl=tclstub) $(TLIBS)

sqlite3.exe:	$(TOP)\src\shell.c libsqlite3.lib $(LIBRESOBJS) sqlite3.h
	$(LTLINK) $(READLINE_FLAGS) $(TOP)\src\shell.c \
		/link $(LTLINKOPTS) $(LTLIBPATHS) libsqlite3.lib $(LIBRESOBJS) $(LIBREADLINE) $(LTLIBS) $(TLIBS)

mptester.exe:	$(TOP)\mptest\mptest.c libsqlite3.lib $(LIBRESOBJS) sqlite3.h
	$(LTLINK) $(TOP)\mptest\mptest.c \
		/link $(LTLINKOPTS) $(LTLIBPATHS) libsqlite3.lib $(LIBRESOBJS) $(LIBREADLINE) $(LTLIBS) $(TLIBS)

# This target creates a directory named "tsrc" and fills it with
# copies of all of the C source code and header files needed to
# 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) $(TOP)\tool\vdbe-compress.tcl
	-rmdir /S/Q tsrc
	-mkdir tsrc
	for %i in ($(SRC1)) do copy /Y %i tsrc
	for %i in ($(SRC2)) do copy /Y %i tsrc
	for %i in ($(SRC3)) do copy /Y %i tsrc
	for %i in ($(SRC4)) do copy /Y %i tsrc
	for %i in ($(SRC5)) do copy /Y %i tsrc
	del /Q tsrc\sqlite.h.in tsrc\parse.y
	$(TCLSH_CMD) $(TOP)\tool\vdbe-compress.tcl $(OPTS) < tsrc\vdbe.c > vdbe.new
	move vdbe.new tsrc\vdbe.c
	echo > .target_source

sqlite3.c:	.target_source $(TOP)\tool\mksqlite3c.tcl
	$(TCLSH_CMD) $(TOP)\tool\mksqlite3c.tcl $(MKSQLITE3C_ARGS)
	copy tsrc\shell.c .
................................................................................
!ELSE
SQLITE3C = sqlite3.c
!ENDIF

# Rule to build the amalgamation
#
sqlite3.lo:	$(SQLITE3C)
	$(LTCOMPILE) -c $(SQLITE3C)

# Rules to build the LEMON compiler generator
#
lempar.c:	$(TOP)\src\lempar.c
	copy $(TOP)\src\lempar.c .

lemon.exe:	$(TOP)\tool\lemon.c lempar.c
................................................................................
# Rules to build individual *.lo files from generated *.c files. This
# applies to:
#
#     parse.lo
#     opcodes.lo
#
parse.lo:	parse.c $(HDR)
	$(LTCOMPILE) -c parse.c

opcodes.lo:	opcodes.c
	$(LTCOMPILE) -c opcodes.c

# Rule to build the Win32 resources object file.
#
!IF $(USE_RC)!=0
$(LIBRESOBJS):	$(TOP)\src\sqlite3.rc $(HDR)
	echo #ifndef SQLITE_RESOURCE_VERSION > sqlite3rc.h
	for /F %%V in ('type "$(TOP)\VERSION"') do ( \
................................................................................
	echo #endif >> sqlite3rc.h
	$(LTRCOMPILE) -fo $(LIBRESOBJS) $(TOP)\src\sqlite3.rc
!ENDIF

# Rules to build individual *.lo files from files in the src directory.
#
alter.lo:	$(TOP)\src\alter.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\alter.c

analyze.lo:	$(TOP)\src\analyze.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\analyze.c

attach.lo:	$(TOP)\src\attach.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\attach.c

auth.lo:	$(TOP)\src\auth.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\auth.c

backup.lo:	$(TOP)\src\backup.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\backup.c

bitvec.lo:	$(TOP)\src\bitvec.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\bitvec.c

btmutex.lo:	$(TOP)\src\btmutex.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\btmutex.c

btree.lo:	$(TOP)\src\btree.c $(HDR) $(TOP)\src\pager.h
	$(LTCOMPILE) -c $(TOP)\src\btree.c

build.lo:	$(TOP)\src\build.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\build.c

callback.lo:	$(TOP)\src\callback.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\callback.c

complete.lo:	$(TOP)\src\complete.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\complete.c

ctime.lo:	$(TOP)\src\ctime.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\ctime.c

date.lo:	$(TOP)\src\date.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\date.c

delete.lo:	$(TOP)\src\delete.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\delete.c

expr.lo:	$(TOP)\src\expr.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\expr.c

fault.lo:	$(TOP)\src\fault.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\fault.c

fkey.lo:	$(TOP)\src\fkey.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\fkey.c

func.lo:	$(TOP)\src\func.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\func.c

global.lo:	$(TOP)\src\global.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\global.c

hash.lo:	$(TOP)\src\hash.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\hash.c

insert.lo:	$(TOP)\src\insert.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\insert.c

journal.lo:	$(TOP)\src\journal.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\journal.c

legacy.lo:	$(TOP)\src\legacy.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\legacy.c

loadext.lo:	$(TOP)\src\loadext.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\loadext.c

main.lo:	$(TOP)\src\main.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\main.c

malloc.lo:	$(TOP)\src\malloc.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\malloc.c

mem0.lo:	$(TOP)\src\mem0.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mem0.c

mem1.lo:	$(TOP)\src\mem1.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mem1.c

mem2.lo:	$(TOP)\src\mem2.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mem2.c

mem3.lo:	$(TOP)\src\mem3.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mem3.c

mem5.lo:	$(TOP)\src\mem5.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mem5.c

memjournal.lo:	$(TOP)\src\memjournal.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\memjournal.c

mutex.lo:	$(TOP)\src\mutex.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mutex.c

mutex_noop.lo:	$(TOP)\src\mutex_noop.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mutex_noop.c

mutex_unix.lo:	$(TOP)\src\mutex_unix.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mutex_unix.c

mutex_w32.lo:	$(TOP)\src\mutex_w32.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\mutex_w32.c

notify.lo:	$(TOP)\src\notify.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\notify.c

pager.lo:	$(TOP)\src\pager.c $(HDR) $(TOP)\src\pager.h
	$(LTCOMPILE) -c $(TOP)\src\pager.c

pcache.lo:	$(TOP)\src\pcache.c $(HDR) $(TOP)\src\pcache.h
	$(LTCOMPILE) -c $(TOP)\src\pcache.c

pcache1.lo:	$(TOP)\src\pcache1.c $(HDR) $(TOP)\src\pcache.h
	$(LTCOMPILE) -c $(TOP)\src\pcache1.c

os.lo:	$(TOP)\src\os.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\os.c

os_unix.lo:	$(TOP)\src\os_unix.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\os_unix.c

os_win.lo:	$(TOP)\src\os_win.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\os_win.c

pragma.lo:	$(TOP)\src\pragma.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\pragma.c

prepare.lo:	$(TOP)\src\prepare.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\prepare.c

printf.lo:	$(TOP)\src\printf.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\printf.c

random.lo:	$(TOP)\src\random.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\random.c

resolve.lo:	$(TOP)\src\resolve.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\resolve.c

rowset.lo:	$(TOP)\src\rowset.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\rowset.c

select.lo:	$(TOP)\src\select.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\select.c

status.lo:	$(TOP)\src\status.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\status.c

table.lo:	$(TOP)\src\table.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\table.c

threads.lo:	$(TOP)\src\threads.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\threads.c

tokenize.lo:	$(TOP)\src\tokenize.c keywordhash.h $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\tokenize.c

trigger.lo:	$(TOP)\src\trigger.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\trigger.c

update.lo:	$(TOP)\src\update.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\update.c

utf.lo:	$(TOP)\src\utf.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\utf.c

util.lo:	$(TOP)\src\util.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\util.c

vacuum.lo:	$(TOP)\src\vacuum.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vacuum.c

vdbe.lo:	$(TOP)\src\vdbe.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vdbe.c

vdbeapi.lo:	$(TOP)\src\vdbeapi.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vdbeapi.c

vdbeaux.lo:	$(TOP)\src\vdbeaux.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vdbeaux.c

vdbeblob.lo:	$(TOP)\src\vdbeblob.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vdbeblob.c

vdbemem.lo:	$(TOP)\src\vdbemem.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vdbemem.c

vdbesort.lo:	$(TOP)\src\vdbesort.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vdbesort.c

vdbetrace.lo:	$(TOP)\src\vdbetrace.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vdbetrace.c

vtab.lo:	$(TOP)\src\vtab.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\vtab.c

wal.lo:	$(TOP)\src\wal.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\wal.c

walker.lo:	$(TOP)\src\walker.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\walker.c

where.lo:	$(TOP)\src\where.c $(HDR)
	$(LTCOMPILE) -c $(TOP)\src\where.c

tclsqlite.lo:	$(TOP)\src\tclsqlite.c $(HDR)
	$(LTCOMPILE) -DUSE_TCL_STUBS=1 -DBUILD_sqlite -I$(TCLINCDIR) -c $(TOP)\src\tclsqlite.c

tclsqlite-shell.lo:	$(TOP)\src\tclsqlite.c $(HDR)
	$(LTCOMPILE) -DTCLSH=1 -DBUILD_sqlite -I$(TCLINCDIR) -c $(TOP)\src\tclsqlite.c

tclsqlite3.exe:	tclsqlite-shell.lo libsqlite3.lib $(LIBRESOBJS)
	$(LD) $(LDFLAGS) $(LTLINKOPTS) $(LTLIBPATHS) /OUT:$@ libsqlite3.lib tclsqlite-shell.lo $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

# Rules to build opcodes.c and opcodes.h
#
opcodes.c:	opcodes.h $(TOP)\mkopcodec.awk
	$(NAWK) -f $(TOP)\mkopcodec.awk opcodes.h > opcodes.c

opcodes.h:	parse.h $(TOP)\src\vdbe.c $(TOP)\mkopcodeh.awk
................................................................................
	type parse.h $(TOP)\src\vdbe.c | $(NAWK) -f $(TOP)\mkopcodeh.awk > opcodes.h

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

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

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



# Rules to build the extension objects.
#
icu.lo:	$(TOP)\ext\icu\icu.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\icu\icu.c

fts2.lo:	$(TOP)\ext\fts2\fts2.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2.c

fts2_hash.lo:	$(TOP)\ext\fts2\fts2_hash.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_hash.c

fts2_icu.lo:	$(TOP)\ext\fts2\fts2_icu.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_icu.c

fts2_porter.lo:	$(TOP)\ext\fts2\fts2_porter.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_porter.c

fts2_tokenizer.lo:	$(TOP)\ext\fts2\fts2_tokenizer.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_tokenizer.c

fts2_tokenizer1.lo:	$(TOP)\ext\fts2\fts2_tokenizer1.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_tokenizer1.c

fts3.lo:	$(TOP)\ext\fts3\fts3.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3.c

fts3_aux.lo:	$(TOP)\ext\fts3\fts3_aux.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_aux.c

fts3_expr.lo:	$(TOP)\ext\fts3\fts3_expr.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_expr.c

fts3_hash.lo:	$(TOP)\ext\fts3\fts3_hash.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_hash.c

fts3_icu.lo:	$(TOP)\ext\fts3\fts3_icu.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_icu.c

fts3_snippet.lo:	$(TOP)\ext\fts3\fts3_snippet.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_snippet.c

fts3_porter.lo:	$(TOP)\ext\fts3\fts3_porter.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_porter.c

fts3_tokenizer.lo:	$(TOP)\ext\fts3\fts3_tokenizer.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_tokenizer.c

fts3_tokenizer1.lo:	$(TOP)\ext\fts3\fts3_tokenizer1.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_tokenizer1.c

fts3_tokenize_vtab.lo:	$(TOP)\ext\fts3\fts3_tokenize_vtab.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_tokenize_vtab.c

fts3_unicode.lo:	$(TOP)\ext\fts3\fts3_unicode.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_unicode.c

fts3_unicode2.lo:	$(TOP)\ext\fts3\fts3_unicode2.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_unicode2.c

fts3_write.lo:	$(TOP)\ext\fts3\fts3_write.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_write.c

rtree.lo:	$(TOP)\ext\rtree\rtree.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\rtree\rtree.c


# Rules to build the 'testfixture' application.
#
# If using the amalgamation, use sqlite3.c directly to build the test
# fixture.  Otherwise link against libsqlite3.lib.  (This distinction is
# 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) libsqlite3.lib
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

................................................................................
	copy $(SQLITE3C) + $(TOP)\src\test_stat.c + $(TOP)\src\tclsqlite.c $@
	echo static const char *tclsh_main_loop(void){ >> $@
	echo static const char *zMainloop = >> $@
	$(NAWK) -f $(TOP)\tool\tostr.awk $(TOP)\tool\spaceanal.tcl >> $@
	echo ; return zMainloop; } >> $@

sqlite3_analyzer.exe:	sqlite3_analyzer.c $(LIBRESOBJS)
	$(LTLINK) -DBUILD_sqlite -DTCLSH=2 -I$(TCLINCDIR) sqlite3_analyzer.c \
		/link $(LTLINKOPTS) $(LTLIBPATHS) $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

testloadext.lo:	$(TOP)\src\test_loadext.c
	$(LTCOMPILE) -c $(TOP)\src\test_loadext.c

testloadext.dll: testloadext.lo
	$(LD) $(LDFLAGS) $(LTLINKOPTS) $(LTLIBPATHS) /DLL /OUT:$@ testloadext.lo

showdb.exe:	$(TOP)\tool\showdb.c $(SQLITE3C)
	$(LTLINK) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\showdb.c $(SQLITE3C)

showstat4.exe:	$(TOP)\tool\showstat4.c $(SQLITE3C)
	$(LTLINK) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\showstat4.c $(SQLITE3C)

showjournal.exe:	$(TOP)\tool\showjournal.c $(SQLITE3C)
	$(LTLINK) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\showjournal.c $(SQLITE3C)

showwal.exe:	$(TOP)\tool\showwal.c $(SQLITE3C)
	$(LTLINK) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\showwal.c $(SQLITE3C)

fts3view.exe:	$(TOP)\ext\fts3\tool\fts3view.c $(SQLITE3C)
	$(LTLINK) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\ext\fts3\tool\fts3view.c $(SQLITE3C)

rollback-test.exe:	$(TOP)\tool\rollback-test.c $(SQLITE3C)
	$(LTLINK) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\rollback-test.c $(SQLITE3C)

LogEst.exe:	$(TOP)\tool\logest.c sqlite3.h
	$(LTLINK) -Fe$@ $(TOP)\tool\LogEst.c

wordcount.exe:	$(TOP)\test\wordcount.c $(SQLITE3C)
	$(LTLINK) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\test\wordcount.c $(SQLITE3C)

speedtest1.exe:	$(TOP)\test\speedtest1.c $(SQLITE3C)
	$(LTLINK) -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\test\speedtest1.c $(SQLITE3C)

clean:
	del /Q *.lo *.ilk *.lib *.obj *.pdb sqlite3.exe libsqlite3.lib 2>NUL
	del /Q *.cod *.da *.bb *.bbg gmon.out 2>NUL
	del /Q sqlite3.h opcodes.c opcodes.h 2>NUL
	del /Q lemon.* lempar.c parse.* 2>NUL
	del /Q mkkeywordhash.* keywordhash.h 2>NUL
	del /Q notasharedlib.* 2>NUL
	-rmdir /Q/S .deps 2>NUL
	-rmdir /Q/S .libs 2>NUL
	-rmdir /Q/S quota2a 2>NUL
	-rmdir /Q/S quota2b 2>NUL
	-rmdir /Q/S quota2c 2>NUL
	-rmdir /Q/S tsrc 2>NUL
	del /Q .target_source 2>NUL
	del /Q tclsqlite3.exe tclsqlite3.exp 2>NUL
	del /Q testloadext.dll testloadext.exp 2>NUL
	del /Q testfixture.exe testfixture.exp 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 wordcount.exe 2>NUL
	del /Q sqlite3.dll sqlite3.lib sqlite3.exp 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.exp sqlite3_analyzer.c 2>NUL
	del /Q sqlite-*-output.vsix 2>NUL
	del /Q mptester.exe 2>NUL

# Dynamic link library section.
#
dll: sqlite3.dll

sqlite3.def: libsqlite3.lib
	echo EXPORTS > sqlite3.def
	dumpbin /all libsqlite3.lib \
		| $(NAWK) "/ 1 _?sqlite3_/ { sub(/^.* _?/,\"\");print }" \
		| sort >> sqlite3.def

sqlite3.dll: $(LIBOBJ) $(LIBRESOBJS) sqlite3.def
	$(LD) $(LDFLAGS) $(LTLINKOPTS) $(LTLIBPATHS) /DLL /DEF:sqlite3.def /OUT:$@ $(LIBOBJ) $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

!ENDIF

# Set this non-0 to enable full warnings (-W4, etc) when compiling.
#
!IFNDEF USE_FULLWARN
USE_FULLWARN = 0
!ENDIF

# Set this non-0 to use "stdcall" calling convention for the core library
# and shell executable.
#
!IFNDEF USE_STDCALL
USE_STDCALL = 0
!ENDIF

# Set this non-0 to have the shell executable link against the core dynamic
# link library.
#
!IFNDEF DYNAMIC_SHELL
DYNAMIC_SHELL = 0
!ENDIF

# If necessary, create a list of harmless compiler warnings to disable when
# compiling the various tools.  For the SQLite source code itself, warnings,
# if any, will be disabled from within it.
#
!IFNDEF NO_WARN
!IF $(USE_FULLWARN)!=0
NO_WARN = -wd4054 -wd4055 -wd4100 -wd4127 -wd4152 -wd4189 -wd4206 -wd4210
NO_WARN = $(NO_WARN) -wd4232 -wd4244 -wd4305 -wd4306 -wd4702 -wd4706
!ENDIF
................................................................................

NSDKLIBPATH = $(NSDKLIBPATH:\\=\)

# 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
!ELSE
BCC = $(NCC) -nologo -W3
!ENDIF

# Check if assembly code listings should be generated for the source
# code files to be compiled.
#
!IF $(USE_LISTINGS)!=0
BCC = $(BCC) -FAcs
................................................................................
!ENDIF

# C compiler and options for use in building executables that
# will run on the target platform.  (BCC and TCC are usually the
# same unless your are cross-compiling.)
#
!IF $(USE_FULLWARN)!=0
TCC = $(CC) -nologo -W4 -DINCLUDE_MSVC_H=1
!ELSE
TCC = $(CC) -nologo -W3
!ENDIF

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

# Check if we want to use the "stdcall" calling convention when compiling.
# This is not supported by the compilers for non-x86 platforms.  It should
# also be noted here that building any target with these "stdcall" options
# will most likely fail if the Tcl library is also required.  This is due
# to how the Tcl library functions are declared and exported (i.e. without
# an explicit calling convention, which results in "cdecl").
#
!IF $(USE_STDCALL)!=0
!IF "$(PLATFORM)"=="x86"
CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl
SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl
!ELSE
!IFNDEF PLATFORM
CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl
SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl
!ELSE
CORE_CCONV_OPTS =
SHELL_CCONV_OPTS =
!ENDIF
!ENDIF
!ELSE
CORE_CCONV_OPTS =
SHELL_CCONV_OPTS =
!ENDIF

# These are additional compiler options used for the core library.
#
!IFNDEF CORE_COMPILE_OPTS
!IF $(USE_STDCALL)!=0
CORE_COMPILE_OPTS = $(CORE_CCONV_OPTS) -DSQLITE_API=__declspec(dllexport)
!ELSE
CORE_COMPILE_OPTS = $(CORE_CCONV_OPTS)
!ENDIF
!ENDIF

# These are the additional targets that the core library should depend on
# when linking.
#
!IFNDEF CORE_LINK_DEP
!IF $(USE_STDCALL)!=0
CORE_LINK_DEP =
!ELSE
CORE_LINK_DEP = sqlite3.def
!ENDIF
!ENDIF

# These are additional linker options used for the core library.
#
!IFNDEF CORE_LINK_OPTS
!IF $(USE_STDCALL)!=0
CORE_LINK_OPTS =
!ELSE
CORE_LINK_OPTS = /DEF:sqlite3.def
!ENDIF
!ENDIF

# These are additional compiler options used for the shell executable.
#
!IFNDEF SHELL_COMPILE_OPTS
!IF $(DYNAMIC_SHELL)!=0
SHELL_COMPILE_OPTS = $(SHELL_CCONV_OPTS) -DSQLITE_API=__declspec(dllimport)
!ELSE
SHELL_COMPILE_OPTS = $(SHELL_CCONV_OPTS)
!ENDIF
!ENDIF

# This is the core library that the shell executable should depend on.
#
!IFNDEF SHELL_CORE_DEP
!IF $(DYNAMIC_SHELL)!=0
SHELL_CORE_DEP = sqlite3.dll
!ELSE
SHELL_CORE_DEP = libsqlite3.lib
!ENDIF
!ENDIF

# This is the core library that the shell executable should link with.
#
!IFNDEF SHELL_CORE_LIB
!IF $(DYNAMIC_SHELL)!=0
SHELL_CORE_LIB = sqlite3.lib
!ELSE
SHELL_CORE_LIB = libsqlite3.lib
!ENDIF
!ENDIF

# These are additional linker options used for the shell executable.
#
!IFNDEF SHELL_LINK_OPTS
SHELL_LINK_OPTS = $(SHELL_CORE_LIB)
!ENDIF

# Check if assembly code listings should be generated for the source
# code files to be compiled.
#
!IF $(USE_LISTINGS)!=0
TCC = $(TCC) -FAcs
!ENDIF
................................................................................
!ENDIF

# If a platform was set, force the linker to target that.
# Note that the vcvars*.bat family of batch files typically
# set this for you.  Otherwise, the linker will attempt
# to deduce the binary type based on the object files.
!IFDEF PLATFORM
LTLINKOPTS = /NOLOGO /MACHINE:$(PLATFORM)
LTLIBOPTS = /NOLOGO /MACHINE:$(PLATFORM)
!ELSE
LTLINKOPTS = /NOLOGO
LTLIBOPTS = /NOLOGO
!ENDIF

# When compiling for use in the WinRT environment, the following
# linker option must be used to mark the executable as runnable
# only in the context of an application container.
#
!IF $(FOR_WINRT)!=0
................................................................................

libsqlite3.lib:	$(LIBOBJ)
	$(LTLIB) $(LTLIBOPTS) /OUT:$@ $(LIBOBJ) $(TLIBS)

libtclsqlite3.lib:	tclsqlite.lo libsqlite3.lib
	$(LTLIB) $(LTLIBOPTS) $(LTLIBPATHS) /OUT:$@ tclsqlite.lo libsqlite3.lib $(LIBTCL:tcl=tclstub) $(TLIBS)

sqlite3.exe:	$(TOP)\src\shell.c $(SHELL_CORE_DEP) $(LIBRESOBJS) sqlite3.h
	$(LTLINK) $(SHELL_COMPILE_OPTS) $(READLINE_FLAGS) $(TOP)\src\shell.c \
		/link /pdb:sqlite3sh.pdb $(LTLINKOPTS) $(SHELL_LINK_OPTS) $(LTLIBPATHS) $(LIBRESOBJS) $(LIBREADLINE) $(LTLIBS) $(TLIBS)

mptester.exe:	$(TOP)\mptest\mptest.c $(SHELL_CORE_DEP) $(LIBRESOBJS) sqlite3.h
	$(LTLINK) $(SHELL_COMPILE_OPTS) $(TOP)\mptest\mptest.c \
		/link $(LTLINKOPTS) $(LTLIBPATHS) $(SHELL_LINK_OPTS) $(LIBRESOBJS) $(LIBREADLINE) $(LTLIBS) $(TLIBS)

# This target creates a directory named "tsrc" and fills it with
# copies of all of the C source code and header files needed to
# 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) $(TOP)\tool\vdbe-compress.tcl
	-rmdir /Q/S tsrc 2>NUL
	-mkdir tsrc
	for %i in ($(SRC1)) do copy /Y %i tsrc
	for %i in ($(SRC2)) do copy /Y %i tsrc
	for %i in ($(SRC3)) do copy /Y %i tsrc
	for %i in ($(SRC4)) do copy /Y %i tsrc
	for %i in ($(SRC5)) do copy /Y %i 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

sqlite3.c:	.target_source $(TOP)\tool\mksqlite3c.tcl
	$(TCLSH_CMD) $(TOP)\tool\mksqlite3c.tcl $(MKSQLITE3C_ARGS)
	copy tsrc\shell.c .
................................................................................
!ELSE
SQLITE3C = sqlite3.c
!ENDIF

# Rule to build the amalgamation
#
sqlite3.lo:	$(SQLITE3C)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(SQLITE3C)

# Rules to build the LEMON compiler generator
#
lempar.c:	$(TOP)\src\lempar.c
	copy $(TOP)\src\lempar.c .

lemon.exe:	$(TOP)\tool\lemon.c lempar.c
................................................................................
# Rules to build individual *.lo files from generated *.c files. This
# applies to:
#
#     parse.lo
#     opcodes.lo
#
parse.lo:	parse.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c parse.c

opcodes.lo:	opcodes.c
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c opcodes.c

# Rule to build the Win32 resources object file.
#
!IF $(USE_RC)!=0
$(LIBRESOBJS):	$(TOP)\src\sqlite3.rc $(HDR)
	echo #ifndef SQLITE_RESOURCE_VERSION > sqlite3rc.h
	for /F %%V in ('type "$(TOP)\VERSION"') do ( \
................................................................................
	echo #endif >> sqlite3rc.h
	$(LTRCOMPILE) -fo $(LIBRESOBJS) $(TOP)\src\sqlite3.rc
!ENDIF

# Rules to build individual *.lo files from files in the src directory.
#
alter.lo:	$(TOP)\src\alter.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\alter.c

analyze.lo:	$(TOP)\src\analyze.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\analyze.c

attach.lo:	$(TOP)\src\attach.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\attach.c

auth.lo:	$(TOP)\src\auth.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\auth.c

backup.lo:	$(TOP)\src\backup.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\backup.c

bitvec.lo:	$(TOP)\src\bitvec.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\bitvec.c

btmutex.lo:	$(TOP)\src\btmutex.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\btmutex.c

btree.lo:	$(TOP)\src\btree.c $(HDR) $(TOP)\src\pager.h
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\btree.c

build.lo:	$(TOP)\src\build.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\build.c

callback.lo:	$(TOP)\src\callback.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\callback.c

complete.lo:	$(TOP)\src\complete.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\complete.c

ctime.lo:	$(TOP)\src\ctime.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\ctime.c

date.lo:	$(TOP)\src\date.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\date.c

delete.lo:	$(TOP)\src\delete.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\delete.c

expr.lo:	$(TOP)\src\expr.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\expr.c

fault.lo:	$(TOP)\src\fault.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\fault.c

fkey.lo:	$(TOP)\src\fkey.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\fkey.c

func.lo:	$(TOP)\src\func.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\func.c

global.lo:	$(TOP)\src\global.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\global.c

hash.lo:	$(TOP)\src\hash.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\hash.c

insert.lo:	$(TOP)\src\insert.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\insert.c

journal.lo:	$(TOP)\src\journal.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\journal.c

legacy.lo:	$(TOP)\src\legacy.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\legacy.c

loadext.lo:	$(TOP)\src\loadext.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\loadext.c

main.lo:	$(TOP)\src\main.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\main.c

malloc.lo:	$(TOP)\src\malloc.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\malloc.c

mem0.lo:	$(TOP)\src\mem0.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem0.c

mem1.lo:	$(TOP)\src\mem1.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem1.c

mem2.lo:	$(TOP)\src\mem2.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem2.c

mem3.lo:	$(TOP)\src\mem3.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem3.c

mem5.lo:	$(TOP)\src\mem5.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem5.c

memjournal.lo:	$(TOP)\src\memjournal.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\memjournal.c

mutex.lo:	$(TOP)\src\mutex.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mutex.c

mutex_noop.lo:	$(TOP)\src\mutex_noop.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mutex_noop.c

mutex_unix.lo:	$(TOP)\src\mutex_unix.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mutex_unix.c

mutex_w32.lo:	$(TOP)\src\mutex_w32.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mutex_w32.c

notify.lo:	$(TOP)\src\notify.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\notify.c

pager.lo:	$(TOP)\src\pager.c $(HDR) $(TOP)\src\pager.h
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\pager.c

pcache.lo:	$(TOP)\src\pcache.c $(HDR) $(TOP)\src\pcache.h
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\pcache.c

pcache1.lo:	$(TOP)\src\pcache1.c $(HDR) $(TOP)\src\pcache.h
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\pcache1.c

os.lo:	$(TOP)\src\os.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\os.c

os_unix.lo:	$(TOP)\src\os_unix.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\os_unix.c

os_win.lo:	$(TOP)\src\os_win.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\os_win.c

pragma.lo:	$(TOP)\src\pragma.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\pragma.c

prepare.lo:	$(TOP)\src\prepare.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\prepare.c

printf.lo:	$(TOP)\src\printf.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\printf.c

random.lo:	$(TOP)\src\random.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\random.c

resolve.lo:	$(TOP)\src\resolve.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\resolve.c

rowset.lo:	$(TOP)\src\rowset.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\rowset.c

select.lo:	$(TOP)\src\select.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\select.c

status.lo:	$(TOP)\src\status.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\status.c

table.lo:	$(TOP)\src\table.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\table.c

threads.lo:	$(TOP)\src\threads.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\threads.c

tokenize.lo:	$(TOP)\src\tokenize.c keywordhash.h $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\tokenize.c

trigger.lo:	$(TOP)\src\trigger.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\trigger.c

update.lo:	$(TOP)\src\update.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\update.c

utf.lo:	$(TOP)\src\utf.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\utf.c

util.lo:	$(TOP)\src\util.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\util.c

vacuum.lo:	$(TOP)\src\vacuum.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vacuum.c

vdbe.lo:	$(TOP)\src\vdbe.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbe.c

vdbeapi.lo:	$(TOP)\src\vdbeapi.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbeapi.c

vdbeaux.lo:	$(TOP)\src\vdbeaux.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbeaux.c

vdbeblob.lo:	$(TOP)\src\vdbeblob.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbeblob.c

vdbemem.lo:	$(TOP)\src\vdbemem.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbemem.c

vdbesort.lo:	$(TOP)\src\vdbesort.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbesort.c

vdbetrace.lo:	$(TOP)\src\vdbetrace.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbetrace.c

vtab.lo:	$(TOP)\src\vtab.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vtab.c

wal.lo:	$(TOP)\src\wal.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\wal.c

walker.lo:	$(TOP)\src\walker.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\walker.c

where.lo:	$(TOP)\src\where.c $(HDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\where.c

tclsqlite.lo:	$(TOP)\src\tclsqlite.c $(HDR)
	$(LTCOMPILE) $(NO_WARN) -DUSE_TCL_STUBS=1 -DBUILD_sqlite -I$(TCLINCDIR) -c $(TOP)\src\tclsqlite.c

tclsqlite-shell.lo:	$(TOP)\src\tclsqlite.c $(HDR)
	$(LTCOMPILE) $(NO_WARN) -DTCLSH=1 -DBUILD_sqlite -I$(TCLINCDIR) -c $(TOP)\src\tclsqlite.c

tclsqlite3.exe:	tclsqlite-shell.lo $(SQLITE3C) $(LIBRESOBJS)
	$(LTLINK) $(SQLITE3C) /link $(LTLINKOPTS) $(LTLIBPATHS) /OUT:$@ tclsqlite-shell.lo $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

# Rules to build opcodes.c and opcodes.h
#
opcodes.c:	opcodes.h $(TOP)\mkopcodec.awk
	$(NAWK) -f $(TOP)\mkopcodec.awk opcodes.h > opcodes.c

opcodes.h:	parse.h $(TOP)\src\vdbe.c $(TOP)\mkopcodeh.awk
................................................................................
	type parse.h $(TOP)\src\vdbe.c | $(NAWK) -f $(TOP)\mkopcodeh.awk > opcodes.h

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

parse.c:	$(TOP)\src\parse.y lemon.exe $(TOP)\addopcodes.awk
	del /Q parse.y parse.h parse.h.temp 2>NUL
	copy $(TOP)\src\parse.y .
	.\lemon.exe $(REQ_FEATURE_FLAGS) $(OPT_FEATURE_FLAGS) $(OPTS) parse.y
	move parse.h parse.h.temp
	$(NAWK) -f $(TOP)\addopcodes.awk parse.h.temp > parse.h

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



# Rules to build the extension objects.
#
icu.lo:	$(TOP)\ext\icu\icu.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\icu\icu.c

fts2.lo:	$(TOP)\ext\fts2\fts2.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2.c

fts2_hash.lo:	$(TOP)\ext\fts2\fts2_hash.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_hash.c

fts2_icu.lo:	$(TOP)\ext\fts2\fts2_icu.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_icu.c

fts2_porter.lo:	$(TOP)\ext\fts2\fts2_porter.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_porter.c

fts2_tokenizer.lo:	$(TOP)\ext\fts2\fts2_tokenizer.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_tokenizer.c

fts2_tokenizer1.lo:	$(TOP)\ext\fts2\fts2_tokenizer1.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_tokenizer1.c

fts3.lo:	$(TOP)\ext\fts3\fts3.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3.c

fts3_aux.lo:	$(TOP)\ext\fts3\fts3_aux.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_aux.c

fts3_expr.lo:	$(TOP)\ext\fts3\fts3_expr.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_expr.c

fts3_hash.lo:	$(TOP)\ext\fts3\fts3_hash.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_hash.c

fts3_icu.lo:	$(TOP)\ext\fts3\fts3_icu.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_icu.c

fts3_snippet.lo:	$(TOP)\ext\fts3\fts3_snippet.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_snippet.c

fts3_porter.lo:	$(TOP)\ext\fts3\fts3_porter.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_porter.c

fts3_tokenizer.lo:	$(TOP)\ext\fts3\fts3_tokenizer.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_tokenizer.c

fts3_tokenizer1.lo:	$(TOP)\ext\fts3\fts3_tokenizer1.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_tokenizer1.c

fts3_tokenize_vtab.lo:	$(TOP)\ext\fts3\fts3_tokenize_vtab.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_tokenize_vtab.c

fts3_unicode.lo:	$(TOP)\ext\fts3\fts3_unicode.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_unicode.c

fts3_unicode2.lo:	$(TOP)\ext\fts3\fts3_unicode2.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_unicode2.c

fts3_write.lo:	$(TOP)\ext\fts3\fts3_write.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_write.c

rtree.lo:	$(TOP)\ext\rtree\rtree.c $(HDR) $(EXTHDR)
	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\rtree\rtree.c


# Rules to build the 'testfixture' application.
#
# If using the amalgamation, use sqlite3.c directly to build the test
# fixture.  Otherwise link against libsqlite3.lib.  (This distinction is
# 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) $(SHELL_CORE_DEP)
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

................................................................................
	copy $(SQLITE3C) + $(TOP)\src\test_stat.c + $(TOP)\src\tclsqlite.c $@
	echo static const char *tclsh_main_loop(void){ >> $@
	echo static const char *zMainloop = >> $@
	$(NAWK) -f $(TOP)\tool\tostr.awk $(TOP)\tool\spaceanal.tcl >> $@
	echo ; return zMainloop; } >> $@

sqlite3_analyzer.exe:	sqlite3_analyzer.c $(LIBRESOBJS)
	$(LTLINK) $(NO_WARN) -DBUILD_sqlite -DTCLSH=2 -I$(TCLINCDIR) sqlite3_analyzer.c \
		/link $(LTLINKOPTS) $(LTLIBPATHS) $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

testloadext.lo:	$(TOP)\src\test_loadext.c
	$(LTCOMPILE) $(NO_WARN) -c $(TOP)\src\test_loadext.c

testloadext.dll: testloadext.lo
	$(LD) $(LDFLAGS) $(LTLINKOPTS) $(LTLIBPATHS) /DLL /OUT:$@ testloadext.lo

showdb.exe:	$(TOP)\tool\showdb.c $(SQLITE3C)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\showdb.c $(SQLITE3C)

showstat4.exe:	$(TOP)\tool\showstat4.c $(SQLITE3C)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\showstat4.c $(SQLITE3C)

showjournal.exe:	$(TOP)\tool\showjournal.c $(SQLITE3C)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\showjournal.c $(SQLITE3C)

showwal.exe:	$(TOP)\tool\showwal.c $(SQLITE3C)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\showwal.c $(SQLITE3C)

fts3view.exe:	$(TOP)\ext\fts3\tool\fts3view.c $(SQLITE3C)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\ext\fts3\tool\fts3view.c $(SQLITE3C)

rollback-test.exe:	$(TOP)\tool\rollback-test.c $(SQLITE3C)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\tool\rollback-test.c $(SQLITE3C)

LogEst.exe:	$(TOP)\tool\logest.c sqlite3.h
	$(LTLINK) $(NO_WARN) -Fe$@ $(TOP)\tool\LogEst.c

wordcount.exe:	$(TOP)\test\wordcount.c $(SQLITE3C)
	$(LTLINK) $(NO_WARN) -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\test\wordcount.c $(SQLITE3C)

speedtest1.exe:	$(TOP)\test\speedtest1.c $(SQLITE3C)
	$(LTLINK) $(NO_WARN) -DSQLITE_OMIT_LOAD_EXTENSION -Fe$@ \
		$(TOP)\test\speedtest1.c $(SQLITE3C)

clean:
	del /Q *.exp *.lo *.ilk *.lib *.obj *.pdb 2>NUL
	del /Q *.cod *.da *.bb *.bbg gmon.out 2>NUL
	del /Q sqlite3.h opcodes.c opcodes.h 2>NUL
	del /Q lemon.* lempar.c parse.* 2>NUL
	del /Q mkkeywordhash.* keywordhash.h 2>NUL
	del /Q notasharedlib.* 2>NUL
	-rmdir /Q/S .deps 2>NUL
	-rmdir /Q/S .libs 2>NUL
	-rmdir /Q/S quota2a 2>NUL
	-rmdir /Q/S quota2b 2>NUL
	-rmdir /Q/S quota2c 2>NUL
	-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 2>NUL
	del /Q sqlite3.exe sqlite3.dll 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


# Dynamic link library section.
#
dll: sqlite3.dll

sqlite3.def: libsqlite3.lib
	echo EXPORTS > sqlite3.def
	dumpbin /all libsqlite3.lib \
		| $(NAWK) "/ 1 _?sqlite3_/ { sub(/^.* _?/,\"\");print }" \
		| sort >> sqlite3.def

sqlite3.dll: $(LIBOBJ) $(LIBRESOBJS) $(CORE_LINK_DEP)
	$(LD) $(LDFLAGS) $(LTLINKOPTS) $(LTLIBPATHS) /DLL $(CORE_LINK_OPTS) /OUT:$@ $(LIBOBJ) $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

**
** If *pp does not being with a decimal digit SQLITE_ERROR is returned and
** the output value undefined. Otherwise SQLITE_OK is returned.
**
** This function is used when parsing the "prefix=" FTS4 parameter.
*/
static int fts3GobbleInt(const char **pp, int *pnOut){

  const char *p;                  /* Iterator pointer */
  int nInt = 0;                   /* Output value */

  for(p=*pp; p[0]>='0' && p[0]<='9'; p++){
    nInt = nInt * 10 + (p[0] - '0');




  }
  if( p==*pp ) return SQLITE_ERROR;
  *pnOut = nInt;
  *pp = p;
  return SQLITE_OK;
}

................................................................................
    for(p=zParam; *p; p++){
      if( *p==',' ) nIndex++;
    }
  }

  aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex);
  *apIndex = aIndex;
  *pnIndex = nIndex;
  if( !aIndex ){
    return SQLITE_NOMEM;
  }

  memset(aIndex, 0, sizeof(struct Fts3Index) * nIndex);
  if( zParam ){
    const char *p = zParam;
    int i;
    for(i=1; i<nIndex; i++){
      int nPrefix;
      if( fts3GobbleInt(&p, &nPrefix) ) return SQLITE_ERROR;





      aIndex[i].nPrefix = nPrefix;

      p++;
    }
  }


  return SQLITE_OK;
}

/*
** This function is called when initializing an FTS4 table that uses the
** content=xxx option. It determines the number of and names of the columns
** of the new FTS4 table.

**
** If *pp does not being with a decimal digit SQLITE_ERROR is returned and
** the output value undefined. Otherwise SQLITE_OK is returned.
**
** This function is used when parsing the "prefix=" FTS4 parameter.
*/
static int fts3GobbleInt(const char **pp, int *pnOut){
  const int MAX_NPREFIX = 10000000;
  const char *p;                  /* Iterator pointer */
  int nInt = 0;                   /* Output value */

  for(p=*pp; p[0]>='0' && p[0]<='9'; p++){
    nInt = nInt * 10 + (p[0] - '0');
    if( nInt>MAX_NPREFIX ){
      nInt = 0;
      break;
    }
  }
  if( p==*pp ) return SQLITE_ERROR;
  *pnOut = nInt;
  *pp = p;
  return SQLITE_OK;
}

................................................................................
    for(p=zParam; *p; p++){
      if( *p==',' ) nIndex++;
    }
  }

  aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex);
  *apIndex = aIndex;

  if( !aIndex ){
    return SQLITE_NOMEM;
  }

  memset(aIndex, 0, sizeof(struct Fts3Index) * nIndex);
  if( zParam ){
    const char *p = zParam;
    int i;
    for(i=1; i<nIndex; i++){
      int nPrefix = 0;
      if( fts3GobbleInt(&p, &nPrefix) ) return SQLITE_ERROR;
      assert( nPrefix>=0 );
      if( nPrefix==0 ){
        nIndex--;
        i--;
      }else{
        aIndex[i].nPrefix = nPrefix;
      }
      p++;
    }
  }

  *pnIndex = nIndex;
  return SQLITE_OK;
}

/*
** This function is called when initializing an FTS4 table that uses the
** content=xxx option. It determines the number of and names of the columns
** of the new FTS4 table.

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

  if( argc==2 ){
    void *pOld;
    int n = sqlite3_value_bytes(argv[1]);
    if( 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{

    pPtr = sqlite3Fts3HashFind(pHash, zName, nName);

    if( !pPtr ){
      char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName);
      sqlite3_result_error(context, zErr, -1);
      sqlite3_free(zErr);
      return;
    }
  }
................................................................................
  sqlite3_tokenizer_module *m;

  zCopy = sqlite3_mprintf("%s", zArg);
  if( !zCopy ) return SQLITE_NOMEM;
  zEnd = &zCopy[strlen(zCopy)];

  z = (char *)sqlite3Fts3NextToken(zCopy, &n);




  z[n] = '\0';
  sqlite3Fts3Dequote(z);

  m = (sqlite3_tokenizer_module *)sqlite3Fts3HashFind(pHash,z,(int)strlen(z)+1);
  if( !m ){
    *pzErr = sqlite3_mprintf("unknown tokenizer: %s", z);
    rc = SQLITE_ERROR;

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

  if( argc==2 ){
    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{
    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);
      return;
    }
  }
................................................................................
  sqlite3_tokenizer_module *m;

  zCopy = sqlite3_mprintf("%s", zArg);
  if( !zCopy ) return SQLITE_NOMEM;
  zEnd = &zCopy[strlen(zCopy)];

  z = (char *)sqlite3Fts3NextToken(zCopy, &n);
  if( z==0 ){
    assert( n==0 );
    z = zCopy;
  }
  z[n] = '\0';
  sqlite3Fts3Dequote(z);

  m = (sqlite3_tokenizer_module *)sqlite3Fts3HashFind(pHash,z,(int)strlen(z)+1);
  if( !m ){
    *pzErr = sqlite3_mprintf("unknown tokenizer: %s", z);
    rc = SQLITE_ERROR;

}

/*
** This is a comparison function used as a qsort() callback when sorting
** an array of pending terms by term. This occurs as part of flushing
** the contents of the pending-terms hash table to the database.
*/
static int fts3CompareElemByTerm(const void *lhs, const void *rhs){



  char *z1 = fts3HashKey(*(Fts3HashElem **)lhs);
  char *z2 = fts3HashKey(*(Fts3HashElem **)rhs);
  int n1 = fts3HashKeysize(*(Fts3HashElem **)lhs);
  int n2 = fts3HashKeysize(*(Fts3HashElem **)rhs);

  int n = (n1<n2 ? n1 : n2);
  int c = memcmp(z1, z2, n);

}

/*
** This is a comparison function used as a qsort() callback when sorting
** an array of pending terms by term. This occurs as part of flushing
** the contents of the pending-terms hash table to the database.
*/
static int SQLITE_CDECL fts3CompareElemByTerm(
  const void *lhs,
  const void *rhs
){
  char *z1 = fts3HashKey(*(Fts3HashElem **)lhs);
  char *z2 = fts3HashKey(*(Fts3HashElem **)rhs);
  int n1 = fts3HashKeysize(*(Fts3HashElem **)lhs);
  int n2 = fts3HashKeysize(*(Fts3HashElem **)rhs);

  int n = (n1<n2 ? n1 : n2);
  int c = memcmp(z1, z2, n);

      }else{
        printf("         idx %2d", iIdx);
      }
      sqlite3_snprintf(sizeof(rtag), rtag, "r%lld",
                       sqlite3_column_int64(pStmt,5));
      printf("  root   %9s\n", rtag);
      if( iLEnd>iStart ){
        sqlite3_int64 iLower, iPrev, iX;
        if( iLEnd+1<=iEnd ){
          sqlite3_bind_int64(pStmt2, 1, iLEnd+1);
          sqlite3_bind_int64(pStmt2, 2, iEnd);
          iLower = -1;        
          while( sqlite3_step(pStmt2)==SQLITE_ROW ){
            iX = sqlite3_column_int64(pStmt2, 0);
            if( iLower<0 ){
................................................................................
/*
** Decode a single segment block and display the results on stdout.
*/
static void decodeSegment(
  const unsigned char *aData,   /* Content to print */
  int nData                     /* Number of bytes of content */
){
  sqlite3_int64 iChild;
  sqlite3_int64 iPrefix;
  sqlite3_int64 nTerm;
  sqlite3_int64 n;
  sqlite3_int64 iDocsz;
  int iHeight;
  sqlite3_int64 i = 0;
  int cnt = 0;

      }else{
        printf("         idx %2d", iIdx);
      }
      sqlite3_snprintf(sizeof(rtag), rtag, "r%lld",
                       sqlite3_column_int64(pStmt,5));
      printf("  root   %9s\n", rtag);
      if( iLEnd>iStart ){
        sqlite3_int64 iLower, iPrev = 0, iX;
        if( iLEnd+1<=iEnd ){
          sqlite3_bind_int64(pStmt2, 1, iLEnd+1);
          sqlite3_bind_int64(pStmt2, 2, iEnd);
          iLower = -1;        
          while( sqlite3_step(pStmt2)==SQLITE_ROW ){
            iX = sqlite3_column_int64(pStmt2, 0);
            if( iLower<0 ){
................................................................................
/*
** Decode a single segment block and display the results on stdout.
*/
static void decodeSegment(
  const unsigned char *aData,   /* Content to print */
  int nData                     /* Number of bytes of content */
){
  sqlite3_int64 iChild = 0;
  sqlite3_int64 iPrefix;
  sqlite3_int64 nTerm;
  sqlite3_int64 n;
  sqlite3_int64 iDocsz;
  int iHeight;
  sqlite3_int64 i = 0;
  int cnt = 0;

  SELECT a FROM t1 WHERE b='x17y';
  --match 17
  SELECT a FROM t1 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
  --match 29 28 27 26 25
--end
--wait 1
--task 2

  CREATE TABLE t2(a INTEGER PRIMARY KEY, b);
  INSERT INTO t2 SELECT a, b FROM t1;
  UPDATE t1 SET b='x'||a||'y';
  SELECT sum(length(b)) FROM t2;
  --match 247
  SELECT a FROM t2 WHERE b='x17y';
  --match 17
................................................................................
  CREATE INDEX t2b ON t2(b);
  SELECT a FROM t2 WHERE b='x17y';
  --match 17
  SELECT a FROM t2 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
  --match 29 28 27 26 25
--end
--task 3

  CREATE TABLE t3(a INTEGER PRIMARY KEY, b);
  INSERT INTO t3 SELECT a, b FROM t1;
  UPDATE t1 SET b='x'||a||'y';
  SELECT sum(length(b)) FROM t3;
  --match 247
  SELECT a FROM t3 WHERE b='x17y';
  --match 17
................................................................................
  CREATE INDEX t3b ON t3(b);
  SELECT a FROM t3 WHERE b='x17y';
  --match 17
  SELECT a FROM t3 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
  --match 29 28 27 26 25
--end
--task 4

  CREATE TABLE t4(a INTEGER PRIMARY KEY, b);
  INSERT INTO t4 SELECT a, b FROM t1;
  UPDATE t1 SET b='x'||a||'y';
  SELECT sum(length(b)) FROM t4;
  --match 247
  SELECT a FROM t4 WHERE b='x17y';
  --match 17
................................................................................
  CREATE INDEX t4b ON t4(b);
  SELECT a FROM t4 WHERE b='x17y';
  --match 17
  SELECT a FROM t4 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
  --match 29 28 27 26 25
--end
--task 5

  CREATE TABLE t5(a INTEGER PRIMARY KEY, b);
  INSERT INTO t5 SELECT a, b FROM t1;
  UPDATE t1 SET b='x'||a||'y';
  SELECT sum(length(b)) FROM t5;
  --match 247
  SELECT a FROM t5 WHERE b='x17y';
  --match 17

  SELECT a FROM t1 WHERE b='x17y';
  --match 17
  SELECT a FROM t1 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
  --match 29 28 27 26 25
--end
--wait 1
--task 2
  DROP TABLE IF EXISTS t2;
  CREATE TABLE t2(a INTEGER PRIMARY KEY, b);
  INSERT INTO t2 SELECT a, b FROM t1;
  UPDATE t1 SET b='x'||a||'y';
  SELECT sum(length(b)) FROM t2;
  --match 247
  SELECT a FROM t2 WHERE b='x17y';
  --match 17
................................................................................
  CREATE INDEX t2b ON t2(b);
  SELECT a FROM t2 WHERE b='x17y';
  --match 17
  SELECT a FROM t2 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
  --match 29 28 27 26 25
--end
--task 3
  DROP TABLE IF EXISTS t3;
  CREATE TABLE t3(a INTEGER PRIMARY KEY, b);
  INSERT INTO t3 SELECT a, b FROM t1;
  UPDATE t1 SET b='x'||a||'y';
  SELECT sum(length(b)) FROM t3;
  --match 247
  SELECT a FROM t3 WHERE b='x17y';
  --match 17
................................................................................
  CREATE INDEX t3b ON t3(b);
  SELECT a FROM t3 WHERE b='x17y';
  --match 17
  SELECT a FROM t3 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
  --match 29 28 27 26 25
--end
--task 4
  DROP TABLE IF EXISTS t4;
  CREATE TABLE t4(a INTEGER PRIMARY KEY, b);
  INSERT INTO t4 SELECT a, b FROM t1;
  UPDATE t1 SET b='x'||a||'y';
  SELECT sum(length(b)) FROM t4;
  --match 247
  SELECT a FROM t4 WHERE b='x17y';
  --match 17
................................................................................
  CREATE INDEX t4b ON t4(b);
  SELECT a FROM t4 WHERE b='x17y';
  --match 17
  SELECT a FROM t4 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
  --match 29 28 27 26 25
--end
--task 5
  DROP TABLE IF EXISTS t5;
  CREATE TABLE t5(a INTEGER PRIMARY KEY, b);
  INSERT INTO t5 SELECT a, b FROM t1;
  UPDATE t1 SET b='x'||a||'y';
  SELECT sum(length(b)) FROM t5;
  --match 247
  SELECT a FROM t5 WHERE b='x17y';
  --match 17

  for(i=0; i<nArg; i++){
    fprintf(stderr," %s", azArg[i]);
  }
  fprintf(stderr,"\n");
  exit(1);
}

int main(int argc, char **argv){
  const char *zClient;
  int iClient;
  int n, i;
  int openFlags = SQLITE_OPEN_READWRITE;
  int rc;
  char *zScript;
  int taskId;
  const char *zTrace;
  const char *zCOption;




  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 ){
................................................................................
                    "Library: %s\n"
                    "Header:  %s\n",
                    sqlite3_sourceid(), SQLITE_SOURCE_ID);
    exit(1);
  }
  n = argc-2;
  sqlite3_snprintf(sizeof(g.zName), g.zName, "%05d.mptest", GETPID());




  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;
................................................................................
  }else{
    sqlite3_stmt *pStmt;
    int iTimeout;
    if( n==0 ){
      fatalError("missing script filename");
    }
    if( n>1 ) unrecognizedArguments(argv[0], n, argv+2);

    runSql(



      "CREATE TABLE task(\n"
      "  id INTEGER PRIMARY KEY,\n"
      "  name TEXT,\n"
      "  client INTEGER,\n"
      "  starttime DATE,\n"
      "  endtime DATE,\n"
      "  script TEXT\n"
................................................................................
      "CREATE INDEX task_i1 ON task(client, starttime);\n"
      "CREATE INDEX task_i2 ON task(client, endtime);\n"
      "CREATE TABLE counters(nError,nTest);\n"
      "INSERT INTO counters VALUES(0,0);\n"
      "CREATE TABLE client(id INTEGER PRIMARY KEY, wantHalt);\n"
    );
    zScript = readFile(argv[2]);

    if( g.iTrace ) logMessage("begin script [%s]\n", argv[2]);
    runScript(0, 0, zScript, argv[2]);


    sqlite3_free(zScript);
    if( g.iTrace ) logMessage("end script [%s]\n", argv[2]);
    waitForClient(0, 2000, "during shutdown...\n");
    trySql("UPDATE client SET wantHalt=1");
    sqlite3_sleep(10);
    g.iTimeout = 0;
    iTimeout = 1000;
    while( ((rc = trySql("SELECT 1 FROM client"))==SQLITE_BUSY
        || rc==SQLITE_ROW) && iTimeout>0 ){
................................................................................
    }
    if( rc==SQLITE_ROW ){
      g.nError += sqlite3_column_int(pStmt, 0);
      g.nTest += sqlite3_column_int(pStmt, 1);
    }
    sqlite3_finalize(pStmt);
  }
  sqlite3_close(g.db);  
  maybeClose(g.pLog);
  maybeClose(g.pErrLog);
  if( iClient==0 ){
    printf("Summary: %d errors out of %d tests\n", g.nError, g.nTest);
  }
  return g.nError>0;
}

  for(i=0; i<nArg; i++){
    fprintf(stderr," %s", azArg[i]);
  }
  fprintf(stderr,"\n");
  exit(1);
}

int SQLITE_CDECL main(int argc, char **argv){
  const char *zClient;
  int iClient;
  int n, i;
  int openFlags = SQLITE_OPEN_READWRITE;
  int rc;
  char *zScript;
  int taskId;
  const char *zTrace;
  const char *zCOption;
  const char *zJMode;
  const char *zNRep;
  int nRep = 1, iRep;

  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 ){
................................................................................
                    "Library: %s\n"
                    "Header:  %s\n",
                    sqlite3_sourceid(), SQLITE_SOURCE_ID);
    exit(1);
  }
  n = argc-2;
  sqlite3_snprintf(sizeof(g.zName), g.zName, "%05d.mptest", GETPID());
  zJMode = findOption(argv+2, &n, "journalmode", 1);
  zNRep = findOption(argv+2, &n, "repeat", 1);
  if( zNRep ) nRep = atoi(zNRep);
  if( nRep<1 ) nRep = 1;
  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;
................................................................................
  }else{
    sqlite3_stmt *pStmt;
    int iTimeout;
    if( n==0 ){
      fatalError("missing script filename");
    }
    if( n>1 ) unrecognizedArguments(argv[0], n, argv+2);
    if( zJMode ) runSql("PRAGMA journal_mode=%Q;", zJMode);
    runSql(
      "DROP TABLE IF EXISTS task;\n"
      "DROP TABLE IF EXISTS counters;\n"
      "DROP TABLE IF EXISTS client;\n"
      "CREATE TABLE task(\n"
      "  id INTEGER PRIMARY KEY,\n"
      "  name TEXT,\n"
      "  client INTEGER,\n"
      "  starttime DATE,\n"
      "  endtime DATE,\n"
      "  script TEXT\n"
................................................................................
      "CREATE INDEX task_i1 ON task(client, starttime);\n"
      "CREATE INDEX task_i2 ON task(client, endtime);\n"
      "CREATE TABLE counters(nError,nTest);\n"
      "INSERT INTO counters VALUES(0,0);\n"
      "CREATE TABLE client(id INTEGER PRIMARY KEY, wantHalt);\n"
    );
    zScript = readFile(argv[2]);
    for(iRep=1; iRep<=nRep; iRep++){
      if( g.iTrace ) logMessage("begin script [%s] cycle %d\n", argv[2], iRep);
      runScript(0, 0, zScript, argv[2]);
      if( g.iTrace ) logMessage("end script [%s] cycle %d\n", argv[2], iRep);
    }
    sqlite3_free(zScript);

    waitForClient(0, 2000, "during shutdown...\n");
    trySql("UPDATE client SET wantHalt=1");
    sqlite3_sleep(10);
    g.iTimeout = 0;
    iTimeout = 1000;
    while( ((rc = trySql("SELECT 1 FROM client"))==SQLITE_BUSY
        || rc==SQLITE_ROW) && iTimeout>0 ){
................................................................................
    }
    if( rc==SQLITE_ROW ){
      g.nError += sqlite3_column_int(pStmt, 0);
      g.nTest += sqlite3_column_int(pStmt, 1);
    }
    sqlite3_finalize(pStmt);
  }
  sqlite3_close(g.db);
  maybeClose(g.pLog);
  maybeClose(g.pErrLog);
  if( iClient==0 ){
    printf("Summary: %d errors out of %d tests\n", g.nError, g.nTest);
  }
  return g.nError>0;
}

   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51


--end
--task 5
  SELECT t1.a FROM t1, t2
   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51


--end
--task 3
  SELECT t1.a FROM t1, t2
   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51


--end
--task 2
  SELECT t1.a FROM t1, t2
   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51


--end
--task 4
  SELECT t1.a FROM t1, t2
   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51


--end
--wait all

   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51
  PRAGMA integrity_check;
  --match ok
--end
--task 5
  SELECT t1.a FROM t1, t2
   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51
  PRAGMA integrity_check;
  --match ok
--end
--task 3
  SELECT t1.a FROM t1, t2
   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51
  PRAGMA integrity_check;
  --match ok
--end
--task 2
  SELECT t1.a FROM t1, t2
   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51
  PRAGMA integrity_check;
  --match ok
--end
--task 4
  SELECT t1.a FROM t1, t2
   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
   ORDER BY t1.a LIMIT 4
  --match 33 34 35 36
  SELECT t3.a FROM t3, t4
   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
   ORDER BY t3.a LIMIT 7
  --match 45 46 47 48 49 50 51
  PRAGMA integrity_check;
  --match ok
--end
--wait all

  }

  /* Ensure the default expression is something that sqlite3ValueFromExpr()
  ** can handle (i.e. not CURRENT_TIME etc.)
  */
  if( pDflt ){
    sqlite3_value *pVal = 0;

    if( sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_NONE, &pVal) ){


      db->mallocFailed = 1;
      return;
    }
    if( !pVal ){
      sqlite3ErrorMsg(pParse, "Cannot add a column with non-constant default");
      return;
    }

  }

  /* Ensure the default expression is something that sqlite3ValueFromExpr()
  ** can handle (i.e. not CURRENT_TIME etc.)
  */
  if( pDflt ){
    sqlite3_value *pVal = 0;
    int rc;
    rc = sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_NONE, &pVal);
    assert( rc==SQLITE_OK || rc==SQLITE_NOMEM );
    if( rc!=SQLITE_OK ){
      db->mallocFailed = 1;
      return;
    }
    if( !pVal ){
      sqlite3ErrorMsg(pParse, "Cannot add a column with non-constant default");
      return;
    }

}


/*
** Exit the recursive mutex on a Btree.
*/
void sqlite3BtreeLeave(Btree *p){

  if( p->sharable ){
    assert( p->wantToLock>0 );
    p->wantToLock--;
    if( p->wantToLock==0 ){
      unlockBtreeMutex(p);
    }
  }

}


/*
** Exit the recursive mutex on a Btree.
*/
void sqlite3BtreeLeave(Btree *p){
  assert( sqlite3_mutex_held(p->db->mutex) );
  if( p->sharable ){
    assert( p->wantToLock>0 );
    p->wantToLock--;
    if( p->wantToLock==0 ){
      unlockBtreeMutex(p);
    }
  }

#endif
  if( pBt==0 ){
    /*
    ** The following asserts make sure that structures used by the btree are
    ** the right size.  This is to guard against size changes that result
    ** when compiling on a different architecture.
    */
    assert( sizeof(i64)==8 || sizeof(i64)==4 );
    assert( sizeof(u64)==8 || sizeof(u64)==4 );
    assert( sizeof(u32)==4 );
    assert( sizeof(u16)==2 );
    assert( sizeof(Pgno)==4 );
  
    pBt = sqlite3MallocZero( sizeof(*pBt) );
    if( pBt==0 ){
      rc = SQLITE_NOMEM;
................................................................................
          ** different page). Once this subsequent call to balance_nonroot() 
          ** has completed, it is safe to release the pSpace buffer used by
          ** the previous call, as the overflow cell data will have been 
          ** copied either into the body of a database page or into the new
          ** pSpace buffer passed to the latter call to balance_nonroot().
          */
          u8 *pSpace = sqlite3PageMalloc(pCur->pBt->pageSize);
          rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1, pCur->hints);

          if( pFree ){
            /* If pFree is not NULL, it points to the pSpace buffer used 
            ** by a previous call to balance_nonroot(). Its contents are
            ** now stored either on real database pages or within the 
            ** new pSpace buffer, so it may be safely freed here. */
            sqlite3PageFree(pFree);
          }
................................................................................
  }

  pBt->btsFlags &= ~BTS_NO_WAL;
  return rc;
}

/*
** set the mask of hint flags for cursor pCsr. Currently the only valid
** values are 0 and BTREE_BULKLOAD.
*/
void sqlite3BtreeCursorHints(BtCursor *pCsr, unsigned int mask){
  assert( mask==BTREE_BULKLOAD || mask==0 );
  pCsr->hints = mask;
}











/*
** Return true if the given Btree is read-only.
*/
int sqlite3BtreeIsReadonly(Btree *p){
  return (p->pBt->btsFlags & BTS_READ_ONLY)!=0;
}

/*
** Return the size of the header added to each page by this module.
*/
int sqlite3HeaderSizeBtree(void){ return ROUND8(sizeof(MemPage)); }

#endif
  if( pBt==0 ){
    /*
    ** The following asserts make sure that structures used by the btree are
    ** the right size.  This is to guard against size changes that result
    ** when compiling on a different architecture.
    */
    assert( sizeof(i64)==8 );
    assert( sizeof(u64)==8 );
    assert( sizeof(u32)==4 );
    assert( sizeof(u16)==2 );
    assert( sizeof(Pgno)==4 );
  
    pBt = sqlite3MallocZero( sizeof(*pBt) );
    if( pBt==0 ){
      rc = SQLITE_NOMEM;
................................................................................
          ** different page). Once this subsequent call to balance_nonroot() 
          ** has completed, it is safe to release the pSpace buffer used by
          ** the previous call, as the overflow cell data will have been 
          ** copied either into the body of a database page or into the new
          ** pSpace buffer passed to the latter call to balance_nonroot().
          */
          u8 *pSpace = sqlite3PageMalloc(pCur->pBt->pageSize);
          rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1,
                               pCur->hints&BTREE_BULKLOAD);
          if( pFree ){
            /* If pFree is not NULL, it points to the pSpace buffer used 
            ** by a previous call to balance_nonroot(). Its contents are
            ** now stored either on real database pages or within the 
            ** new pSpace buffer, so it may be safely freed here. */
            sqlite3PageFree(pFree);
          }
................................................................................
  }

  pBt->btsFlags &= ~BTS_NO_WAL;
  return rc;
}

/*
** set the mask of hint flags for cursor pCsr.

*/
void sqlite3BtreeCursorHints(BtCursor *pCsr, unsigned int mask){
  assert( mask==BTREE_BULKLOAD || mask==BTREE_SEEK_EQ || mask==0 );
  pCsr->hints = mask;
}

#ifdef SQLITE_DEBUG
/*
** Return true if the cursor has a hint specified.  This routine is
** only used from within assert() statements
*/
int sqlite3BtreeCursorHasHint(BtCursor *pCsr, unsigned int mask){
  return (pCsr->hints & mask)!=0;
}
#endif

/*
** Return true if the given Btree is read-only.
*/
int sqlite3BtreeIsReadonly(Btree *p){
  return (p->pBt->btsFlags & BTS_READ_ONLY)!=0;
}

/*
** Return the size of the header added to each page by this module.
*/
int sqlite3HeaderSizeBtree(void){ return ROUND8(sizeof(MemPage)); }

#define BTREE_INCR_VACUUM         7
#define BTREE_APPLICATION_ID      8
#define BTREE_DATA_VERSION        15  /* A virtual meta-value */

/*
** Values that may be OR'd together to form the second argument of an
** sqlite3BtreeCursorHints() call.









*/
#define BTREE_BULKLOAD 0x00000001


int sqlite3BtreeCursor(
  Btree*,                              /* BTree containing table to open */
  int iTable,                          /* Index of root page */
  int wrFlag,                          /* 1 for writing.  0 for read-only */
  struct KeyInfo*,                     /* First argument to compare function */
  BtCursor *pCursor                    /* Space to write cursor structure */
................................................................................
struct Pager *sqlite3BtreePager(Btree*);

int sqlite3BtreePutData(BtCursor*, u32 offset, u32 amt, void*);
void sqlite3BtreeIncrblobCursor(BtCursor *);
void sqlite3BtreeClearCursor(BtCursor *);
int sqlite3BtreeSetVersion(Btree *pBt, int iVersion);
void sqlite3BtreeCursorHints(BtCursor *, unsigned int mask);



int sqlite3BtreeIsReadonly(Btree *pBt);
int sqlite3HeaderSizeBtree(void);

#ifndef NDEBUG
int sqlite3BtreeCursorIsValid(BtCursor*);
#endif

#define BTREE_INCR_VACUUM         7
#define BTREE_APPLICATION_ID      8
#define BTREE_DATA_VERSION        15  /* A virtual meta-value */

/*
** Values that may be OR'd together to form the second argument of an
** sqlite3BtreeCursorHints() call.
**
** The BTREE_BULKLOAD flag is set on index cursors when the index is going
** to be filled with content that is already in sorted order.
**
** The BTREE_SEEK_EQ flag is set on cursors that will get OP_SeekGE or
** OP_SeekLE opcodes for a range search, but where the range of entries
** selected will all have the same key.  In other words, the cursor will
** be used only for equality key searches.
**
*/
#define BTREE_BULKLOAD 0x00000001  /* Used to full index in sorted order */
#define BTREE_SEEK_EQ  0x00000002  /* EQ seeks only - no range seeks */

int sqlite3BtreeCursor(
  Btree*,                              /* BTree containing table to open */
  int iTable,                          /* Index of root page */
  int wrFlag,                          /* 1 for writing.  0 for read-only */
  struct KeyInfo*,                     /* First argument to compare function */
  BtCursor *pCursor                    /* Space to write cursor structure */
................................................................................
struct Pager *sqlite3BtreePager(Btree*);

int sqlite3BtreePutData(BtCursor*, u32 offset, u32 amt, void*);
void sqlite3BtreeIncrblobCursor(BtCursor *);
void sqlite3BtreeClearCursor(BtCursor *);
int sqlite3BtreeSetVersion(Btree *pBt, int iVersion);
void sqlite3BtreeCursorHints(BtCursor *, unsigned int mask);
#ifdef SQLITE_DEBUG
int sqlite3BtreeCursorHasHint(BtCursor*, unsigned int mask);
#endif
int sqlite3BtreeIsReadonly(Btree *pBt);
int sqlite3HeaderSizeBtree(void);

#ifndef NDEBUG
int sqlite3BtreeCursorIsValid(BtCursor*);
#endif

            sqlite3ErrorMsg(pParse, 
                "conflicting ON CONFLICT clauses specified", 0);
          }
          if( pIdx->onError==OE_Default ){
            pIdx->onError = pIndex->onError;
          }
        }

        goto exit_create_index;
      }
    }
  }

  /* Link the new Index structure to its table and to the other
  ** in-memory database structures. 

            sqlite3ErrorMsg(pParse, 
                "conflicting ON CONFLICT clauses specified", 0);
          }
          if( pIdx->onError==OE_Default ){
            pIdx->onError = pIndex->onError;
          }
        }
        pRet = pIdx;
        goto exit_create_index;
      }
    }
  }

  /* Link the new Index structure to its table and to the other
  ** in-memory database structures. 

**
** If a memory allocation error occurs, that fact is recorded in pParse->db
** and the pExpr parameter is returned unchanged.
*/
Expr *sqlite3ExprAddCollateToken(
  Parse *pParse,           /* Parsing context */
  Expr *pExpr,             /* Add the "COLLATE" clause to this expression */
  const Token *pCollName   /* Name of collating sequence */

){
  if( pCollName->n>0 ){
    Expr *pNew = sqlite3ExprAlloc(pParse->db, TK_COLLATE, pCollName, 1);
    if( pNew ){
      pNew->pLeft = pExpr;
      pNew->flags |= EP_Collate|EP_Skip;
      pExpr = pNew;
    }
  }
  return pExpr;
}
Expr *sqlite3ExprAddCollateString(Parse *pParse, Expr *pExpr, const char *zC){
  Token s;
  assert( zC!=0 );
  s.z = zC;
  s.n = sqlite3Strlen30(s.z);
  return sqlite3ExprAddCollateToken(pParse, pExpr, &s);
}

/*
** Skip over any TK_COLLATE or TK_AS operators and any unlikely()
** or likelihood() function at the root of an expression.
*/
Expr *sqlite3ExprSkipCollate(Expr *pExpr){
................................................................................
** the height is greater than the maximum allowed expression depth,
** leave an error in pParse.
**
** Also propagate all EP_Propagate flags from the Expr.x.pList into
** Expr.flags. 
*/
void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){

  exprSetHeight(p);
  sqlite3ExprCheckHeight(pParse, p->nHeight);
}

/*
** Return the maximum height of any expression tree referenced
** by the select statement passed as an argument.

**
** If a memory allocation error occurs, that fact is recorded in pParse->db
** and the pExpr parameter is returned unchanged.
*/
Expr *sqlite3ExprAddCollateToken(
  Parse *pParse,           /* Parsing context */
  Expr *pExpr,             /* Add the "COLLATE" clause to this expression */
  const Token *pCollName,  /* Name of collating sequence */
  int dequote              /* True to dequote pCollName */
){
  if( pCollName->n>0 ){
    Expr *pNew = sqlite3ExprAlloc(pParse->db, TK_COLLATE, pCollName, dequote);
    if( pNew ){
      pNew->pLeft = pExpr;
      pNew->flags |= EP_Collate|EP_Skip;
      pExpr = pNew;
    }
  }
  return pExpr;
}
Expr *sqlite3ExprAddCollateString(Parse *pParse, Expr *pExpr, const char *zC){
  Token s;
  assert( zC!=0 );
  s.z = zC;
  s.n = sqlite3Strlen30(s.z);
  return sqlite3ExprAddCollateToken(pParse, pExpr, &s, 0);
}

/*
** Skip over any TK_COLLATE or TK_AS operators and any unlikely()
** or likelihood() function at the root of an expression.
*/
Expr *sqlite3ExprSkipCollate(Expr *pExpr){
................................................................................
** the height is greater than the maximum allowed expression depth,
** leave an error in pParse.
**
** Also propagate all EP_Propagate flags from the Expr.x.pList into
** Expr.flags. 
*/
void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){
  if( pParse->nErr ) return;
  exprSetHeight(p);
  sqlite3ExprCheckHeight(pParse, p->nHeight);
}

/*
** Return the maximum height of any expression tree referenced
** by the select statement passed as an argument.

#include <assert.h>
#include "vdbeInt.h"

/*
** Return the collating function associated with a function.
*/
static CollSeq *sqlite3GetFuncCollSeq(sqlite3_context *context){


  VdbeOp *pOp = &context->pVdbe->aOp[context->iOp-1];
  assert( pOp->opcode==OP_CollSeq );
  assert( pOp->p4type==P4_COLLSEQ );
  return pOp->p4.pColl;
}

/*
** Indicate that the accumulator load should be skipped on this

#include <assert.h>
#include "vdbeInt.h"

/*
** Return the collating function associated with a function.
*/
static CollSeq *sqlite3GetFuncCollSeq(sqlite3_context *context){
  VdbeOp *pOp;
  assert( context->pVdbe!=0 );
  pOp = &context->pVdbe->aOp[context->iOp-1];
  assert( pOp->opcode==OP_CollSeq );
  assert( pOp->p4type==P4_COLLSEQ );
  return pOp->p4.pColl;
}

/*
** Indicate that the accumulator load should be skipped on this

#ifdef SQLITE_OMIT_WSD
  rc = sqlite3_wsd_init(4096, 24);
  if( rc!=SQLITE_OK ){
    return rc;
  }
#endif






  /* If SQLite is already completely initialized, then this call
  ** to sqlite3_initialize() should be a no-op.  But the initialization
  ** must be complete.  So isInit must not be set until the very end
  ** of this routine.
  */
  if( sqlite3GlobalConfig.isInit ) return SQLITE_OK;

#ifdef SQLITE_OMIT_WSD
  rc = sqlite3_wsd_init(4096, 24);
  if( rc!=SQLITE_OK ){
    return rc;
  }
#endif

  /* If the following assert() fails on some obscure processor/compiler
  ** combination, the work-around is to set the correct pointer
  ** size at compile-time using -DSQLITE_PTRSIZE=n compile-time option */
  assert( SQLITE_PTRSIZE==sizeof(char*) );

  /* If SQLite is already completely initialized, then this call
  ** to sqlite3_initialize() should be a no-op.  But the initialization
  ** must be complete.  So isInit must not be set until the very end
  ** of this routine.
  */
  if( sqlite3GlobalConfig.isInit ) return SQLITE_OK;

  ** True if heap is nearly "full" where "full" is defined by the
  ** sqlite3_soft_heap_limit() setting.
  */
  int nearlyFull;
} mem0 = { 0, 0, 0, 0, 0, 0, 0, 0 };

#define mem0 GLOBAL(struct Mem0Global, mem0)








/*
** This routine runs when the memory allocator sees that the
** total memory allocation is about to exceed the soft heap
** limit.
*/
static void softHeapLimitEnforcer(
................................................................................
** Change the alarm callback
*/
static int sqlite3MemoryAlarm(
  void(*xCallback)(void *pArg, sqlite3_int64 used,int N),
  void *pArg,
  sqlite3_int64 iThreshold
){
  int nUsed;
  sqlite3_mutex_enter(mem0.mutex);
  mem0.alarmCallback = xCallback;
  mem0.alarmArg = pArg;
  mem0.alarmThreshold = iThreshold;
  nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
  mem0.nearlyFull = (iThreshold>0 && iThreshold<=nUsed);
  sqlite3_mutex_leave(mem0.mutex);
................................................................................
static int mallocWithAlarm(int n, void **pp){
  int nFull;
  void *p;
  assert( sqlite3_mutex_held(mem0.mutex) );
  nFull = sqlite3GlobalConfig.m.xRoundup(n);
  sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, n);
  if( mem0.alarmCallback!=0 ){
    int nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
    if( nUsed >= mem0.alarmThreshold - nFull ){
      mem0.nearlyFull = 1;
      sqlite3MallocAlarm(nFull);
    }else{
      mem0.nearlyFull = 0;
    }
  }
................................................................................
  if( p==0 && mem0.alarmCallback ){
    sqlite3MallocAlarm(nFull);
    p = sqlite3GlobalConfig.m.xMalloc(nFull);
  }
#endif
  if( p ){
    nFull = sqlite3MallocSize(p);
    sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nFull);
    sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, 1);
  }
  *pp = p;
  return nFull;
}

/*
** Allocate memory.  This routine is like sqlite3_malloc() except that it
................................................................................

  sqlite3_mutex_enter(mem0.mutex);
  sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n);
  if( mem0.nScratchFree && sqlite3GlobalConfig.szScratch>=n ){
    p = mem0.pScratchFree;
    mem0.pScratchFree = mem0.pScratchFree->pNext;
    mem0.nScratchFree--;
    sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, 1);
    sqlite3_mutex_leave(mem0.mutex);
  }else{
    sqlite3_mutex_leave(mem0.mutex);
    p = sqlite3Malloc(n);
    if( sqlite3GlobalConfig.bMemstat && p ){
      sqlite3_mutex_enter(mem0.mutex);
      sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, sqlite3MallocSize(p));
      sqlite3_mutex_leave(mem0.mutex);
    }
    sqlite3MemdebugSetType(p, MEMTYPE_SCRATCH);
  }
  assert( sqlite3_mutex_notheld(mem0.mutex) );


................................................................................
      ScratchFreeslot *pSlot;
      pSlot = (ScratchFreeslot*)p;
      sqlite3_mutex_enter(mem0.mutex);
      pSlot->pNext = mem0.pScratchFree;
      mem0.pScratchFree = pSlot;
      mem0.nScratchFree++;
      assert( mem0.nScratchFree <= (u32)sqlite3GlobalConfig.nScratch );
      sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, -1);
      sqlite3_mutex_leave(mem0.mutex);
    }else{
      /* Release memory back to the heap */
      assert( sqlite3MemdebugHasType(p, MEMTYPE_SCRATCH) );
      assert( sqlite3MemdebugNoType(p, ~MEMTYPE_SCRATCH) );
      sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
      if( sqlite3GlobalConfig.bMemstat ){
        int iSize = sqlite3MallocSize(p);
        sqlite3_mutex_enter(mem0.mutex);
        sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, -iSize);
        sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, -iSize);
        sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, -1);
        sqlite3GlobalConfig.m.xFree(p);
        sqlite3_mutex_leave(mem0.mutex);
      }else{
        sqlite3GlobalConfig.m.xFree(p);
      }
    }
  }
................................................................................
*/
int sqlite3MallocSize(void *p){
  assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
  return sqlite3GlobalConfig.m.xSize(p);
}
int sqlite3DbMallocSize(sqlite3 *db, void *p){
  if( db==0 ){
    assert( sqlite3MemdebugNoType(p, ~MEMTYPE_HEAP) );
    assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
    return sqlite3MallocSize(p);
  }else{
    assert( sqlite3_mutex_held(db->mutex) );
    if( isLookaside(db, p) ){
      return db->lookaside.sz;
    }else{
      assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      assert( sqlite3MemdebugNoType(p, ~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      return sqlite3GlobalConfig.m.xSize(p);
    }
  }
}
sqlite3_uint64 sqlite3_msize(void *p){
  assert( sqlite3MemdebugNoType(p, ~MEMTYPE_HEAP) );
  assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
  return (sqlite3_uint64)sqlite3GlobalConfig.m.xSize(p);
}

/*
** Free memory previously obtained from sqlite3Malloc().
*/
void sqlite3_free(void *p){
  if( p==0 ) return;  /* IMP: R-49053-54554 */
  assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
  assert( sqlite3MemdebugNoType(p, ~MEMTYPE_HEAP) );
  if( sqlite3GlobalConfig.bMemstat ){
    sqlite3_mutex_enter(mem0.mutex);
    sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, -sqlite3MallocSize(p));
    sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, -1);
    sqlite3GlobalConfig.m.xFree(p);
    sqlite3_mutex_leave(mem0.mutex);
  }else{
    sqlite3GlobalConfig.m.xFree(p);
  }
}

................................................................................
      pBuf->pNext = db->lookaside.pFree;
      db->lookaside.pFree = pBuf;
      db->lookaside.nOut--;
      return;
    }
  }
  assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
  assert( sqlite3MemdebugNoType(p, ~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
  assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) );
  sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
  sqlite3_free(p);
}

/*
** Change the size of an existing memory allocation
*/
void *sqlite3Realloc(void *pOld, u64 nBytes){
  int nOld, nNew, nDiff;
  void *pNew;
  assert( sqlite3MemdebugHasType(pOld, MEMTYPE_HEAP) );
  assert( sqlite3MemdebugNoType(pOld, ~MEMTYPE_HEAP) );
  if( pOld==0 ){
    return sqlite3Malloc(nBytes); /* IMP: R-04300-56712 */
  }
  if( nBytes==0 ){
    sqlite3_free(pOld); /* IMP: R-26507-47431 */
    return 0;
  }
................................................................................
    pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
    if( pNew==0 && mem0.alarmCallback ){
      sqlite3MallocAlarm((int)nBytes);
      pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
    }
    if( pNew ){
      nNew = sqlite3MallocSize(pNew);
      sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nNew-nOld);
    }
    sqlite3_mutex_leave(mem0.mutex);
  }else{
    pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
  }
  assert( EIGHT_BYTE_ALIGNMENT(pNew) ); /* IMP: R-11148-40995 */
  return pNew;
................................................................................
      pNew = sqlite3DbMallocRaw(db, n);
      if( pNew ){
        memcpy(pNew, p, db->lookaside.sz);
        sqlite3DbFree(db, p);
      }
    }else{
      assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      assert( sqlite3MemdebugNoType(p, ~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
      pNew = sqlite3_realloc64(p, n);
      if( !pNew ){
        db->mallocFailed = 1;
      }
      sqlite3MemdebugSetType(pNew,
            (db->lookaside.bEnabled ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP));

  ** True if heap is nearly "full" where "full" is defined by the
  ** sqlite3_soft_heap_limit() setting.
  */
  int nearlyFull;
} mem0 = { 0, 0, 0, 0, 0, 0, 0, 0 };

#define mem0 GLOBAL(struct Mem0Global, mem0)

/*
** Return the memory allocator mutex. sqlite3_status() needs it.
*/
sqlite3_mutex *sqlite3MallocMutex(void){
  return mem0.mutex;
}

/*
** This routine runs when the memory allocator sees that the
** total memory allocation is about to exceed the soft heap
** limit.
*/
static void softHeapLimitEnforcer(
................................................................................
** Change the alarm callback
*/
static int sqlite3MemoryAlarm(
  void(*xCallback)(void *pArg, sqlite3_int64 used,int N),
  void *pArg,
  sqlite3_int64 iThreshold
){
  sqlite3_int64 nUsed;
  sqlite3_mutex_enter(mem0.mutex);
  mem0.alarmCallback = xCallback;
  mem0.alarmArg = pArg;
  mem0.alarmThreshold = iThreshold;
  nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
  mem0.nearlyFull = (iThreshold>0 && iThreshold<=nUsed);
  sqlite3_mutex_leave(mem0.mutex);
................................................................................
static int mallocWithAlarm(int n, void **pp){
  int nFull;
  void *p;
  assert( sqlite3_mutex_held(mem0.mutex) );
  nFull = sqlite3GlobalConfig.m.xRoundup(n);
  sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, n);
  if( mem0.alarmCallback!=0 ){
    sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
    if( nUsed >= mem0.alarmThreshold - nFull ){
      mem0.nearlyFull = 1;
      sqlite3MallocAlarm(nFull);
    }else{
      mem0.nearlyFull = 0;
    }
  }
................................................................................
  if( p==0 && mem0.alarmCallback ){
    sqlite3MallocAlarm(nFull);
    p = sqlite3GlobalConfig.m.xMalloc(nFull);
  }
#endif
  if( p ){
    nFull = sqlite3MallocSize(p);
    sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nFull);
    sqlite3StatusUp(SQLITE_STATUS_MALLOC_COUNT, 1);
  }
  *pp = p;
  return nFull;
}

/*
** Allocate memory.  This routine is like sqlite3_malloc() except that it
................................................................................

  sqlite3_mutex_enter(mem0.mutex);
  sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n);
  if( mem0.nScratchFree && sqlite3GlobalConfig.szScratch>=n ){
    p = mem0.pScratchFree;
    mem0.pScratchFree = mem0.pScratchFree->pNext;
    mem0.nScratchFree--;
    sqlite3StatusUp(SQLITE_STATUS_SCRATCH_USED, 1);
    sqlite3_mutex_leave(mem0.mutex);
  }else{
    sqlite3_mutex_leave(mem0.mutex);
    p = sqlite3Malloc(n);
    if( sqlite3GlobalConfig.bMemstat && p ){
      sqlite3_mutex_enter(mem0.mutex);
      sqlite3StatusUp(SQLITE_STATUS_SCRATCH_OVERFLOW, sqlite3MallocSize(p));
      sqlite3_mutex_leave(mem0.mutex);
    }
    sqlite3MemdebugSetType(p, MEMTYPE_SCRATCH);
  }
  assert( sqlite3_mutex_notheld(mem0.mutex) );


................................................................................
      ScratchFreeslot *pSlot;
      pSlot = (ScratchFreeslot*)p;
      sqlite3_mutex_enter(mem0.mutex);
      pSlot->pNext = mem0.pScratchFree;
      mem0.pScratchFree = pSlot;
      mem0.nScratchFree++;
      assert( mem0.nScratchFree <= (u32)sqlite3GlobalConfig.nScratch );
      sqlite3StatusDown(SQLITE_STATUS_SCRATCH_USED, 1);
      sqlite3_mutex_leave(mem0.mutex);
    }else{
      /* Release memory back to the heap */
      assert( sqlite3MemdebugHasType(p, MEMTYPE_SCRATCH) );
      assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_SCRATCH) );
      sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
      if( sqlite3GlobalConfig.bMemstat ){
        int iSize = sqlite3MallocSize(p);
        sqlite3_mutex_enter(mem0.mutex);
        sqlite3StatusDown(SQLITE_STATUS_SCRATCH_OVERFLOW, iSize);
        sqlite3StatusDown(SQLITE_STATUS_MEMORY_USED, iSize);
        sqlite3StatusDown(SQLITE_STATUS_MALLOC_COUNT, 1);
        sqlite3GlobalConfig.m.xFree(p);
        sqlite3_mutex_leave(mem0.mutex);
      }else{
        sqlite3GlobalConfig.m.xFree(p);
      }
    }
  }
................................................................................
*/
int sqlite3MallocSize(void *p){
  assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
  return sqlite3GlobalConfig.m.xSize(p);
}
int sqlite3DbMallocSize(sqlite3 *db, void *p){
  if( db==0 ){
    assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
    assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
    return sqlite3MallocSize(p);
  }else{
    assert( sqlite3_mutex_held(db->mutex) );
    if( isLookaside(db, p) ){
      return db->lookaside.sz;
    }else{
      assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      return sqlite3GlobalConfig.m.xSize(p);
    }
  }
}
sqlite3_uint64 sqlite3_msize(void *p){
  assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
  assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
  return (sqlite3_uint64)sqlite3GlobalConfig.m.xSize(p);
}

/*
** Free memory previously obtained from sqlite3Malloc().
*/
void sqlite3_free(void *p){
  if( p==0 ) return;  /* IMP: R-49053-54554 */
  assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
  assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
  if( sqlite3GlobalConfig.bMemstat ){
    sqlite3_mutex_enter(mem0.mutex);
    sqlite3StatusDown(SQLITE_STATUS_MEMORY_USED, sqlite3MallocSize(p));
    sqlite3StatusDown(SQLITE_STATUS_MALLOC_COUNT, 1);
    sqlite3GlobalConfig.m.xFree(p);
    sqlite3_mutex_leave(mem0.mutex);
  }else{
    sqlite3GlobalConfig.m.xFree(p);
  }
}

................................................................................
      pBuf->pNext = db->lookaside.pFree;
      db->lookaside.pFree = pBuf;
      db->lookaside.nOut--;
      return;
    }
  }
  assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
  assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
  assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) );
  sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
  sqlite3_free(p);
}

/*
** Change the size of an existing memory allocation
*/
void *sqlite3Realloc(void *pOld, u64 nBytes){
  int nOld, nNew, nDiff;
  void *pNew;
  assert( sqlite3MemdebugHasType(pOld, MEMTYPE_HEAP) );
  assert( sqlite3MemdebugNoType(pOld, (u8)~MEMTYPE_HEAP) );
  if( pOld==0 ){
    return sqlite3Malloc(nBytes); /* IMP: R-04300-56712 */
  }
  if( nBytes==0 ){
    sqlite3_free(pOld); /* IMP: R-26507-47431 */
    return 0;
  }
................................................................................
    pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
    if( pNew==0 && mem0.alarmCallback ){
      sqlite3MallocAlarm((int)nBytes);
      pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
    }
    if( pNew ){
      nNew = sqlite3MallocSize(pNew);
      sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nNew-nOld);
    }
    sqlite3_mutex_leave(mem0.mutex);
  }else{
    pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
  }
  assert( EIGHT_BYTE_ALIGNMENT(pNew) ); /* IMP: R-11148-40995 */
  return pNew;
................................................................................
      pNew = sqlite3DbMallocRaw(db, n);
      if( pNew ){
        memcpy(pNew, p, db->lookaside.sz);
        sqlite3DbFree(db, p);
      }
    }else{
      assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
      pNew = sqlite3_realloc64(p, n);
      if( !pNew ){
        db->mallocFailed = 1;
      }
      sqlite3MemdebugSetType(pNew,
            (db->lookaside.bEnabled ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP));

# define UNIXFILE_DIRSYNC    0x00
#endif
#define UNIXFILE_PSOW        0x10     /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */
#define UNIXFILE_DELETE      0x20     /* Delete on close */
#define UNIXFILE_URI         0x40     /* Filename might have query parameters */
#define UNIXFILE_NOLOCK      0x80     /* Do no file locking */
#define UNIXFILE_WARNED    0x0100     /* verifyDbFile() warnings issued */


/*
** Include code that is common to all os_*.c files
*/
#include "os_common.h"

/*
................................................................................
  struct flock lock;
  int tErrno = 0;

  assert( pFile );
  OSTRACE(("LOCK    %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h,
      azFileLock(eFileLock), azFileLock(pFile->eFileLock),
      azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared,
      osGetpid()));

  /* If there is already a lock of this type or more restrictive on the
  ** unixFile, do nothing. Don't use the end_lock: exit path, as
  ** unixEnterMutex() hasn't been called yet.
  */
  if( pFile->eFileLock>=eFileLock ){
    OSTRACE(("LOCK    %d %s ok (already held) (unix)\n", pFile->h,
................................................................................
  unixInodeInfo *pInode;
  struct flock lock;
  int rc = SQLITE_OK;

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock,
      pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
      osGetpid()));

  assert( eFileLock<=SHARED_LOCK );
  if( pFile->eFileLock<=eFileLock ){
    return SQLITE_OK;
  }
  unixEnterMutex();
  pInode = pFile->pInode;
................................................................................
static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  char *zLockFile = (char *)pFile->lockingContext;
  int rc;

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }

................................................................................
** the requested locking level, this routine is a no-op.
*/
static int flockUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  
  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }
  
................................................................................
static int semXUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  sem_t *pSem = pFile->pInode->pSem;

  assert( pFile );
  assert( pSem );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }
  
................................................................................
  unixFile *pFile = (unixFile*)id;
  unixInodeInfo *pInode = pFile->pInode;
  afpLockingContext *context = (afpLockingContext *) pFile->lockingContext;
  
  assert( pFile );
  OSTRACE(("LOCK    %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h,
           azFileLock(eFileLock), azFileLock(pFile->eFileLock),
           azFileLock(pInode->eFileLock), pInode->nShared , osGetpid()));

  /* If there is already a lock of this type or more restrictive on the
  ** unixFile, do nothing. Don't use the afp_end_lock: exit path, as
  ** unixEnterMutex() hasn't been called yet.
  */
  if( pFile->eFileLock>=eFileLock ){
    OSTRACE(("LOCK    %d %s ok (already held) (afp)\n", pFile->h,
................................................................................
#ifdef SQLITE_TEST
  int h = pFile->h;
#endif

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d(%d,%d) pid=%d (afp)\n", pFile->h, eFileLock,
           pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
           osGetpid()));

  assert( eFileLock<=SHARED_LOCK );
  if( pFile->eFileLock<=eFileLock ){
    return SQLITE_OK;
  }
  unixEnterMutex();
  pInode = pFile->pInode;
................................................................................

/*
** Information and control of an open file handle.
*/
static int unixFileControl(sqlite3_file *id, int op, void *pArg){
  unixFile *pFile = (unixFile*)id;
  switch( op ){




    case SQLITE_FCNTL_LOCKSTATE: {
      *(int*)pArg = pFile->eFileLock;
      return SQLITE_OK;
    }
    case SQLITE_FCNTL_LAST_ERRNO: {
      *(int*)pArg = pFile->lastErrno;
      return SQLITE_OK;
................................................................................
/*
** Apply posix advisory locks for all bytes from ofst through ofst+n-1.
**
** Locks block if the mask is exactly UNIX_SHM_C and are non-blocking
** otherwise.
*/
static int unixShmSystemLock(
  unixShmNode *pShmNode, /* Apply locks to this open shared-memory segment */
  int lockType,          /* F_UNLCK, F_RDLCK, or F_WRLCK */
  int ofst,              /* First byte of the locking range */
  int n                  /* Number of bytes to lock */
){

  struct flock f;       /* The posix advisory locking structure */
  int rc = SQLITE_OK;   /* Result code form fcntl() */

  /* Access to the unixShmNode object is serialized by the caller */

  assert( sqlite3_mutex_held(pShmNode->mutex) || pShmNode->nRef==0 );

  /* Shared locks never span more than one byte */
  assert( n==1 || lockType!=F_RDLCK );

  /* Locks are within range */
  assert( n>=1 && n<SQLITE_SHM_NLOCK );

  if( pShmNode->h>=0 ){

    /* Initialize the locking parameters */
    memset(&f, 0, sizeof(f));
    f.l_type = lockType;
    f.l_whence = SEEK_SET;
    f.l_start = ofst;
    f.l_len = n;


    rc = osFcntl(pShmNode->h, F_SETLK, &f);
    rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;

  }

  /* Update the global lock state and do debug tracing */
#ifdef SQLITE_DEBUG
  { u16 mask;
  OSTRACE(("SHM-LOCK "));
  mask = ofst>31 ? 0xffff : (1<<(ofst+n)) - (1<<ofst);
................................................................................
      */
      osFchown(pShmNode->h, sStat.st_uid, sStat.st_gid);
  
      /* Check to see if another process is holding the dead-man switch.
      ** If not, truncate the file to zero length. 
      */
      rc = SQLITE_OK;
      if( unixShmSystemLock(pShmNode, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
        if( robust_ftruncate(pShmNode->h, 0) ){
          rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename);
        }
      }
      if( rc==SQLITE_OK ){
        rc = unixShmSystemLock(pShmNode, F_RDLCK, UNIX_SHM_DMS, 1);
      }
      if( rc ) goto shm_open_err;
    }
  }

  /* Make the new connection a child of the unixShmNode */
  p->pShmNode = pShmNode;
................................................................................
      if( pX==p ) continue;
      assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 );
      allMask |= pX->sharedMask;
    }

    /* Unlock the system-level locks */
    if( (mask & allMask)==0 ){
      rc = unixShmSystemLock(pShmNode, F_UNLCK, ofst+UNIX_SHM_BASE, n);
    }else{
      rc = SQLITE_OK;
    }

    /* Undo the local locks */
    if( rc==SQLITE_OK ){
      p->exclMask &= ~mask;
................................................................................
      }
      allShared |= pX->sharedMask;
    }

    /* Get shared locks at the system level, if necessary */
    if( rc==SQLITE_OK ){
      if( (allShared & mask)==0 ){
        rc = unixShmSystemLock(pShmNode, F_RDLCK, ofst+UNIX_SHM_BASE, n);
      }else{
        rc = SQLITE_OK;
      }
    }

    /* Get the local shared locks */
    if( rc==SQLITE_OK ){
................................................................................
      }
    }
  
    /* Get the exclusive locks at the system level.  Then if successful
    ** also mark the local connection as being locked.
    */
    if( rc==SQLITE_OK ){
      rc = unixShmSystemLock(pShmNode, F_WRLCK, ofst+UNIX_SHM_BASE, n);
      if( rc==SQLITE_OK ){
        assert( (p->sharedMask & mask)==0 );
        p->exclMask |= mask;
      }
    }
  }
  sqlite3_mutex_leave(pShmNode->mutex);
  OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n",
           p->id, osGetpid(), p->sharedMask, p->exclMask));
  return rc;
}

/*
** Implement a memory barrier or memory fence on shared memory.  
**
** All loads and stores begun before the barrier must complete before
................................................................................
  );

  /* Detect a pid change and reset the PRNG.  There is a race condition
  ** here such that two or more threads all trying to open databases at
  ** the same instant might all reset the PRNG.  But multiple resets
  ** are harmless.
  */
  if( randomnessPid!=osGetpid() ){
    randomnessPid = osGetpid();
    sqlite3_randomness(0,0);
  }

  memset(p, 0, sizeof(unixFile));

  if( eType==SQLITE_OPEN_MAIN_DB ){
    UnixUnusedFd *pUnused;
................................................................................
  ** in the random seed.
  **
  ** When testing, initializing zBuf[] to zero is all we do.  That means
  ** that we always use the same random number sequence.  This makes the
  ** tests repeatable.
  */
  memset(zBuf, 0, nBuf);
  randomnessPid = osGetpid();  
#if !defined(SQLITE_TEST)
  {
    int fd, got;
    fd = robust_open("/dev/urandom", O_RDONLY, 0);
    if( fd<0 ){
      time_t t;
      time(&t);
................................................................................
#ifdef LOCKPROXYDIR
  len = strlcpy(lPath, LOCKPROXYDIR, maxLen);
#else
# ifdef _CS_DARWIN_USER_TEMP_DIR
  {
    if( !confstr(_CS_DARWIN_USER_TEMP_DIR, lPath, maxLen) ){
      OSTRACE(("GETLOCKPATH  failed %s errno=%d pid=%d\n",
               lPath, errno, osGetpid()));
      return SQLITE_IOERR_LOCK;
    }
    len = strlcat(lPath, "sqliteplocks", maxLen);    
  }
# else
  len = strlcpy(lPath, "/tmp/", maxLen);
# endif
................................................................................
  dbLen = (int)strlen(dbPath);
  for( i=0; i<dbLen && (i+len+7)<(int)maxLen; i++){
    char c = dbPath[i];
    lPath[i+len] = (c=='/')?'_':c;
  }
  lPath[i+len]='\0';
  strlcat(lPath, ":auto:", maxLen);
  OSTRACE(("GETLOCKPATH  proxy lock path=%s pid=%d\n", lPath, osGetpid()));
  return SQLITE_OK;
}

/* 
 ** Creates the lock file and any missing directories in lockPath
 */
static int proxyCreateLockPath(const char *lockPath){
................................................................................
         || (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){
        buf[i]='\0';
        if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
          int err=errno;
          if( err!=EEXIST ) {
            OSTRACE(("CREATELOCKPATH  FAILED creating %s, "
                     "'%s' proxy lock path=%s pid=%d\n",
                     buf, strerror(err), lockPath, osGetpid()));
            return err;
          }
        }
      }
      start=i+1;
    }
    buf[i] = lockPath[i];
  }
  OSTRACE(("CREATELOCKPATH  proxy lock path=%s pid=%d\n", lockPath, osGetpid()));
  return 0;
}

/*
** Create a new VFS file descriptor (stored in memory obtained from
** sqlite3_malloc) and open the file named "path" in the file descriptor.
**
................................................................................
    int hostIdMatch = 0;
    int readLen = 0;
    int tryOldLockPath = 0;
    int forceNewLockPath = 0;
    
    OSTRACE(("TAKECONCH  %d for %s pid=%d\n", conchFile->h,
             (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"),
             osGetpid()));

    rc = proxyGetHostID(myHostID, &pError);
    if( (rc&0xff)==SQLITE_IOERR ){
      storeLastErrno(pFile, pError);
      goto end_takeconch;
    }
    rc = proxyConchLock(pFile, myHostID, SHARED_LOCK);
................................................................................
  proxyLockingContext *pCtx;  /* The locking context for the proxy lock */
  unixFile *conchFile;        /* Name of the conch file */

  pCtx = (proxyLockingContext *)pFile->lockingContext;
  conchFile = pCtx->conchFile;
  OSTRACE(("RELEASECONCH  %d for %s pid=%d\n", conchFile->h,
           (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), 
           osGetpid()));
  if( pCtx->conchHeld>0 ){
    rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK);
  }
  pCtx->conchHeld = 0;
  OSTRACE(("RELEASECONCH  %d %s\n", conchFile->h,
           (rc==SQLITE_OK ? "ok" : "failed")));
  return rc;
................................................................................
  if( !path || path[0]=='\0' || !strcmp(path, ":auto:") ){
    lockPath=NULL;
  }else{
    lockPath=(char *)path;
  }
  
  OSTRACE(("TRANSPROXY  %d for %s pid=%d\n", pFile->h,
           (lockPath ? lockPath : ":auto:"), osGetpid()));

  pCtx = sqlite3_malloc( sizeof(*pCtx) );
  if( pCtx==0 ){
    return SQLITE_NOMEM;
  }
  memset(pCtx, 0, sizeof(*pCtx));

# define UNIXFILE_DIRSYNC    0x00
#endif
#define UNIXFILE_PSOW        0x10     /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */
#define UNIXFILE_DELETE      0x20     /* Delete on close */
#define UNIXFILE_URI         0x40     /* Filename might have query parameters */
#define UNIXFILE_NOLOCK      0x80     /* Do no file locking */
#define UNIXFILE_WARNED    0x0100     /* verifyDbFile() warnings issued */
#define UNIXFILE_BLOCK     0x0200     /* Next SHM lock might block */

/*
** Include code that is common to all os_*.c files
*/
#include "os_common.h"

/*
................................................................................
  struct flock lock;
  int tErrno = 0;

  assert( pFile );
  OSTRACE(("LOCK    %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h,
      azFileLock(eFileLock), azFileLock(pFile->eFileLock),
      azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared,
      osGetpid(0)));

  /* If there is already a lock of this type or more restrictive on the
  ** unixFile, do nothing. Don't use the end_lock: exit path, as
  ** unixEnterMutex() hasn't been called yet.
  */
  if( pFile->eFileLock>=eFileLock ){
    OSTRACE(("LOCK    %d %s ok (already held) (unix)\n", pFile->h,
................................................................................
  unixInodeInfo *pInode;
  struct flock lock;
  int rc = SQLITE_OK;

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock,
      pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
      osGetpid(0)));

  assert( eFileLock<=SHARED_LOCK );
  if( pFile->eFileLock<=eFileLock ){
    return SQLITE_OK;
  }
  unixEnterMutex();
  pInode = pFile->pInode;
................................................................................
static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  char *zLockFile = (char *)pFile->lockingContext;
  int rc;

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid(0)));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }

................................................................................
** the requested locking level, this routine is a no-op.
*/
static int flockUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  
  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid(0)));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }
  
................................................................................
static int semXUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  sem_t *pSem = pFile->pInode->pSem;

  assert( pFile );
  assert( pSem );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid(0)));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }
  
................................................................................
  unixFile *pFile = (unixFile*)id;
  unixInodeInfo *pInode = pFile->pInode;
  afpLockingContext *context = (afpLockingContext *) pFile->lockingContext;
  
  assert( pFile );
  OSTRACE(("LOCK    %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h,
           azFileLock(eFileLock), azFileLock(pFile->eFileLock),
           azFileLock(pInode->eFileLock), pInode->nShared , osGetpid(0)));

  /* If there is already a lock of this type or more restrictive on the
  ** unixFile, do nothing. Don't use the afp_end_lock: exit path, as
  ** unixEnterMutex() hasn't been called yet.
  */
  if( pFile->eFileLock>=eFileLock ){
    OSTRACE(("LOCK    %d %s ok (already held) (afp)\n", pFile->h,
................................................................................
#ifdef SQLITE_TEST
  int h = pFile->h;
#endif

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d(%d,%d) pid=%d (afp)\n", pFile->h, eFileLock,
           pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
           osGetpid(0)));

  assert( eFileLock<=SHARED_LOCK );
  if( pFile->eFileLock<=eFileLock ){
    return SQLITE_OK;
  }
  unixEnterMutex();
  pInode = pFile->pInode;
................................................................................

/*
** Information and control of an open file handle.
*/
static int unixFileControl(sqlite3_file *id, int op, void *pArg){
  unixFile *pFile = (unixFile*)id;
  switch( op ){
    case SQLITE_FCNTL_WAL_BLOCK: {
      pFile->ctrlFlags |= UNIXFILE_BLOCK;
      return SQLITE_OK;
    }
    case SQLITE_FCNTL_LOCKSTATE: {
      *(int*)pArg = pFile->eFileLock;
      return SQLITE_OK;
    }
    case SQLITE_FCNTL_LAST_ERRNO: {
      *(int*)pArg = pFile->lastErrno;
      return SQLITE_OK;
................................................................................
/*
** Apply posix advisory locks for all bytes from ofst through ofst+n-1.
**
** Locks block if the mask is exactly UNIX_SHM_C and are non-blocking
** otherwise.
*/
static int unixShmSystemLock(
  unixFile *pFile,       /* Open connection to the WAL file */
  int lockType,          /* F_UNLCK, F_RDLCK, or F_WRLCK */
  int ofst,              /* First byte of the locking range */
  int n                  /* Number of bytes to lock */
){
  unixShmNode *pShmNode; /* Apply locks to this open shared-memory segment */
  struct flock f;        /* The posix advisory locking structure */
  int rc = SQLITE_OK;    /* Result code form fcntl() */

  /* Access to the unixShmNode object is serialized by the caller */
  pShmNode = pFile->pInode->pShmNode;
  assert( sqlite3_mutex_held(pShmNode->mutex) || pShmNode->nRef==0 );

  /* Shared locks never span more than one byte */
  assert( n==1 || lockType!=F_RDLCK );

  /* Locks are within range */
  assert( n>=1 && n<SQLITE_SHM_NLOCK );

  if( pShmNode->h>=0 ){
    int lkType;
    /* Initialize the locking parameters */
    memset(&f, 0, sizeof(f));
    f.l_type = lockType;
    f.l_whence = SEEK_SET;
    f.l_start = ofst;
    f.l_len = n;

    lkType = (pFile->ctrlFlags & UNIXFILE_BLOCK)!=0 ? F_SETLKW : F_SETLK;
    rc = osFcntl(pShmNode->h, lkType, &f);
    rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
    pFile->ctrlFlags &= ~UNIXFILE_BLOCK;
  }

  /* Update the global lock state and do debug tracing */
#ifdef SQLITE_DEBUG
  { u16 mask;
  OSTRACE(("SHM-LOCK "));
  mask = ofst>31 ? 0xffff : (1<<(ofst+n)) - (1<<ofst);
................................................................................
      */
      osFchown(pShmNode->h, sStat.st_uid, sStat.st_gid);
  
      /* Check to see if another process is holding the dead-man switch.
      ** If not, truncate the file to zero length. 
      */
      rc = SQLITE_OK;
      if( unixShmSystemLock(pDbFd, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
        if( robust_ftruncate(pShmNode->h, 0) ){
          rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename);
        }
      }
      if( rc==SQLITE_OK ){
        rc = unixShmSystemLock(pDbFd, F_RDLCK, UNIX_SHM_DMS, 1);
      }
      if( rc ) goto shm_open_err;
    }
  }

  /* Make the new connection a child of the unixShmNode */
  p->pShmNode = pShmNode;
................................................................................
      if( pX==p ) continue;
      assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 );
      allMask |= pX->sharedMask;
    }

    /* Unlock the system-level locks */
    if( (mask & allMask)==0 ){
      rc = unixShmSystemLock(pDbFd, F_UNLCK, ofst+UNIX_SHM_BASE, n);
    }else{
      rc = SQLITE_OK;
    }

    /* Undo the local locks */
    if( rc==SQLITE_OK ){
      p->exclMask &= ~mask;
................................................................................
      }
      allShared |= pX->sharedMask;
    }

    /* Get shared locks at the system level, if necessary */
    if( rc==SQLITE_OK ){
      if( (allShared & mask)==0 ){
        rc = unixShmSystemLock(pDbFd, F_RDLCK, ofst+UNIX_SHM_BASE, n);
      }else{
        rc = SQLITE_OK;
      }
    }

    /* Get the local shared locks */
    if( rc==SQLITE_OK ){
................................................................................
      }
    }
  
    /* Get the exclusive locks at the system level.  Then if successful
    ** also mark the local connection as being locked.
    */
    if( rc==SQLITE_OK ){
      rc = unixShmSystemLock(pDbFd, F_WRLCK, ofst+UNIX_SHM_BASE, n);
      if( rc==SQLITE_OK ){
        assert( (p->sharedMask & mask)==0 );
        p->exclMask |= mask;
      }
    }
  }
  sqlite3_mutex_leave(pShmNode->mutex);
  OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n",
           p->id, osGetpid(0), p->sharedMask, p->exclMask));
  return rc;
}

/*
** Implement a memory barrier or memory fence on shared memory.  
**
** All loads and stores begun before the barrier must complete before
................................................................................
  );

  /* Detect a pid change and reset the PRNG.  There is a race condition
  ** here such that two or more threads all trying to open databases at
  ** the same instant might all reset the PRNG.  But multiple resets
  ** are harmless.
  */
  if( randomnessPid!=osGetpid(0) ){
    randomnessPid = osGetpid(0);
    sqlite3_randomness(0,0);
  }

  memset(p, 0, sizeof(unixFile));

  if( eType==SQLITE_OPEN_MAIN_DB ){
    UnixUnusedFd *pUnused;
................................................................................
  ** in the random seed.
  **
  ** When testing, initializing zBuf[] to zero is all we do.  That means
  ** that we always use the same random number sequence.  This makes the
  ** tests repeatable.
  */
  memset(zBuf, 0, nBuf);
  randomnessPid = osGetpid(0);  
#if !defined(SQLITE_TEST)
  {
    int fd, got;
    fd = robust_open("/dev/urandom", O_RDONLY, 0);
    if( fd<0 ){
      time_t t;
      time(&t);
................................................................................
#ifdef LOCKPROXYDIR
  len = strlcpy(lPath, LOCKPROXYDIR, maxLen);
#else
# ifdef _CS_DARWIN_USER_TEMP_DIR
  {
    if( !confstr(_CS_DARWIN_USER_TEMP_DIR, lPath, maxLen) ){
      OSTRACE(("GETLOCKPATH  failed %s errno=%d pid=%d\n",
               lPath, errno, osGetpid(0)));
      return SQLITE_IOERR_LOCK;
    }
    len = strlcat(lPath, "sqliteplocks", maxLen);    
  }
# else
  len = strlcpy(lPath, "/tmp/", maxLen);
# endif
................................................................................
  dbLen = (int)strlen(dbPath);
  for( i=0; i<dbLen && (i+len+7)<(int)maxLen; i++){
    char c = dbPath[i];
    lPath[i+len] = (c=='/')?'_':c;
  }
  lPath[i+len]='\0';
  strlcat(lPath, ":auto:", maxLen);
  OSTRACE(("GETLOCKPATH  proxy lock path=%s pid=%d\n", lPath, osGetpid(0)));
  return SQLITE_OK;
}

/* 
 ** Creates the lock file and any missing directories in lockPath
 */
static int proxyCreateLockPath(const char *lockPath){
................................................................................
         || (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){
        buf[i]='\0';
        if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
          int err=errno;
          if( err!=EEXIST ) {
            OSTRACE(("CREATELOCKPATH  FAILED creating %s, "
                     "'%s' proxy lock path=%s pid=%d\n",
                     buf, strerror(err), lockPath, osGetpid(0)));
            return err;
          }
        }
      }
      start=i+1;
    }
    buf[i] = lockPath[i];
  }
  OSTRACE(("CREATELOCKPATH  proxy lock path=%s pid=%d\n", lockPath, osGetpid(0)));
  return 0;
}

/*
** Create a new VFS file descriptor (stored in memory obtained from
** sqlite3_malloc) and open the file named "path" in the file descriptor.
**
................................................................................
    int hostIdMatch = 0;
    int readLen = 0;
    int tryOldLockPath = 0;
    int forceNewLockPath = 0;
    
    OSTRACE(("TAKECONCH  %d for %s pid=%d\n", conchFile->h,
             (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"),
             osGetpid(0)));

    rc = proxyGetHostID(myHostID, &pError);
    if( (rc&0xff)==SQLITE_IOERR ){
      storeLastErrno(pFile, pError);
      goto end_takeconch;
    }
    rc = proxyConchLock(pFile, myHostID, SHARED_LOCK);
................................................................................
  proxyLockingContext *pCtx;  /* The locking context for the proxy lock */
  unixFile *conchFile;        /* Name of the conch file */

  pCtx = (proxyLockingContext *)pFile->lockingContext;
  conchFile = pCtx->conchFile;
  OSTRACE(("RELEASECONCH  %d for %s pid=%d\n", conchFile->h,
           (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), 
           osGetpid(0)));
  if( pCtx->conchHeld>0 ){
    rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK);
  }
  pCtx->conchHeld = 0;
  OSTRACE(("RELEASECONCH  %d %s\n", conchFile->h,
           (rc==SQLITE_OK ? "ok" : "failed")));
  return rc;
................................................................................
  if( !path || path[0]=='\0' || !strcmp(path, ":auto:") ){
    lockPath=NULL;
  }else{
    lockPath=(char *)path;
  }
  
  OSTRACE(("TRANSPROXY  %d for %s pid=%d\n", pFile->h,
           (lockPath ? lockPath : ":auto:"), osGetpid(0)));

  pCtx = sqlite3_malloc( sizeof(*pCtx) );
  if( pCtx==0 ){
    return SQLITE_NOMEM;
  }
  memset(pCtx, 0, sizeof(*pCtx));

  }else{
    spanExpr(&A, pParse, TK_VARIABLE, &X);
    sqlite3ExprAssignVarNumber(pParse, A.pExpr);
  }
  spanSet(&A, &X, &X);
}
expr(A) ::= expr(E) COLLATE ids(C). {
  A.pExpr = sqlite3ExprAddCollateToken(pParse, E.pExpr, &C);
  A.zStart = E.zStart;
  A.zEnd = &C.z[C.n];
}
%ifndef SQLITE_OMIT_CAST
expr(A) ::= CAST(X) LP expr(E) AS typetoken(T) RP(Y). {
  A.pExpr = sqlite3PExpr(pParse, TK_CAST, E.pExpr, 0, &T);
  spanSet(&A,&X,&Y);
................................................................................
%destructor idxlist {sqlite3ExprListDelete(pParse->db, $$);}
%type idxlist_opt {ExprList*}
%destructor idxlist_opt {sqlite3ExprListDelete(pParse->db, $$);}

idxlist_opt(A) ::= .                         {A = 0;}
idxlist_opt(A) ::= LP idxlist(X) RP.         {A = X;}
idxlist(A) ::= idxlist(X) COMMA nm(Y) collate(C) sortorder(Z).  {
  Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &C);
  A = sqlite3ExprListAppend(pParse,X, p);
  sqlite3ExprListSetName(pParse,A,&Y,1);
  sqlite3ExprListCheckLength(pParse, A, "index");
  if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z;
}
idxlist(A) ::= nm(Y) collate(C) sortorder(Z). {
  Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &C);
  A = sqlite3ExprListAppend(pParse,0, p);
  sqlite3ExprListSetName(pParse, A, &Y, 1);
  sqlite3ExprListCheckLength(pParse, A, "index");
  if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z;
}

%type collate {Token}

  }else{
    spanExpr(&A, pParse, TK_VARIABLE, &X);
    sqlite3ExprAssignVarNumber(pParse, A.pExpr);
  }
  spanSet(&A, &X, &X);
}
expr(A) ::= expr(E) COLLATE ids(C). {
  A.pExpr = sqlite3ExprAddCollateToken(pParse, E.pExpr, &C, 1);
  A.zStart = E.zStart;
  A.zEnd = &C.z[C.n];
}
%ifndef SQLITE_OMIT_CAST
expr(A) ::= CAST(X) LP expr(E) AS typetoken(T) RP(Y). {
  A.pExpr = sqlite3PExpr(pParse, TK_CAST, E.pExpr, 0, &T);
  spanSet(&A,&X,&Y);
................................................................................
%destructor idxlist {sqlite3ExprListDelete(pParse->db, $$);}
%type idxlist_opt {ExprList*}
%destructor idxlist_opt {sqlite3ExprListDelete(pParse->db, $$);}

idxlist_opt(A) ::= .                         {A = 0;}
idxlist_opt(A) ::= LP idxlist(X) RP.         {A = X;}
idxlist(A) ::= idxlist(X) COMMA nm(Y) collate(C) sortorder(Z).  {
  Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &C, 1);
  A = sqlite3ExprListAppend(pParse,X, p);
  sqlite3ExprListSetName(pParse,A,&Y,1);
  sqlite3ExprListCheckLength(pParse, A, "index");
  if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z;
}
idxlist(A) ::= nm(Y) collate(C) sortorder(Z). {
  Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &C, 1);
  A = sqlite3ExprListAppend(pParse,0, p);
  sqlite3ExprListSetName(pParse, A, &Y, 1);
  sqlite3ExprListCheckLength(pParse, A, "index");
  if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z;
}

%type collate {Token}

**
** Multiple threads can run this routine at the same time.  Global variables
** in pcache1 need to be protected via mutex.
*/
static void *pcache1Alloc(int nByte){
  void *p = 0;
  assert( sqlite3_mutex_notheld(pcache1.grp.mutex) );
  sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
  if( nByte<=pcache1.szSlot ){
    sqlite3_mutex_enter(pcache1.mutex);
    p = (PgHdr1 *)pcache1.pFree;
    if( p ){
      pcache1.pFree = pcache1.pFree->pNext;
      pcache1.nFreeSlot--;
      pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
      assert( pcache1.nFreeSlot>=0 );

      sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
    }
    sqlite3_mutex_leave(pcache1.mutex);
  }
  if( p==0 ){
    /* Memory is not available in the SQLITE_CONFIG_PAGECACHE pool.  Get
    ** it from sqlite3Malloc instead.
    */
    p = sqlite3Malloc(nByte);
#ifndef SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS
    if( p ){
      int sz = sqlite3MallocSize(p);
      sqlite3_mutex_enter(pcache1.mutex);

      sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz);
      sqlite3_mutex_leave(pcache1.mutex);
    }
#endif
    sqlite3MemdebugSetType(p, MEMTYPE_PCACHE);
  }
  return p;
}
................................................................................
*/
static int pcache1Free(void *p){
  int nFreed = 0;
  if( p==0 ) return 0;
  if( p>=pcache1.pStart && p<pcache1.pEnd ){
    PgFreeslot *pSlot;
    sqlite3_mutex_enter(pcache1.mutex);
    sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, -1);
    pSlot = (PgFreeslot*)p;
    pSlot->pNext = pcache1.pFree;
    pcache1.pFree = pSlot;
    pcache1.nFreeSlot++;
    pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
    assert( pcache1.nFreeSlot<=pcache1.nSlot );
    sqlite3_mutex_leave(pcache1.mutex);
  }else{
    assert( sqlite3MemdebugHasType(p, MEMTYPE_PCACHE) );
    sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
    nFreed = sqlite3MallocSize(p);
#ifndef SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS
    sqlite3_mutex_enter(pcache1.mutex);
    sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -nFreed);
    sqlite3_mutex_leave(pcache1.mutex);
#endif
    sqlite3_free(p);
  }
  return nFreed;
}

................................................................................
  sqlite3_config(SQLITE_CONFIG_PCACHE2, &defaultMethods);
}

/*
** Return the size of the header on each page of this PCACHE implementation.
*/
int sqlite3HeaderSizePcache1(void){ return ROUND8(sizeof(PgHdr1)); }









#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/*
** This function is called to free superfluous dynamically allocated memory
** held by the pager system. Memory in use by any SQLite pager allocated
** by the current thread may be sqlite3_free()ed.
**

**
** Multiple threads can run this routine at the same time.  Global variables
** in pcache1 need to be protected via mutex.
*/
static void *pcache1Alloc(int nByte){
  void *p = 0;
  assert( sqlite3_mutex_notheld(pcache1.grp.mutex) );

  if( nByte<=pcache1.szSlot ){
    sqlite3_mutex_enter(pcache1.mutex);
    p = (PgHdr1 *)pcache1.pFree;
    if( p ){
      pcache1.pFree = pcache1.pFree->pNext;
      pcache1.nFreeSlot--;
      pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
      assert( pcache1.nFreeSlot>=0 );
      sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
      sqlite3StatusUp(SQLITE_STATUS_PAGECACHE_USED, 1);
    }
    sqlite3_mutex_leave(pcache1.mutex);
  }
  if( p==0 ){
    /* Memory is not available in the SQLITE_CONFIG_PAGECACHE pool.  Get
    ** it from sqlite3Malloc instead.
    */
    p = sqlite3Malloc(nByte);
#ifndef SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS
    if( p ){
      int sz = sqlite3MallocSize(p);
      sqlite3_mutex_enter(pcache1.mutex);
      sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
      sqlite3StatusUp(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz);
      sqlite3_mutex_leave(pcache1.mutex);
    }
#endif
    sqlite3MemdebugSetType(p, MEMTYPE_PCACHE);
  }
  return p;
}
................................................................................
*/
static int pcache1Free(void *p){
  int nFreed = 0;
  if( p==0 ) return 0;
  if( p>=pcache1.pStart && p<pcache1.pEnd ){
    PgFreeslot *pSlot;
    sqlite3_mutex_enter(pcache1.mutex);
    sqlite3StatusDown(SQLITE_STATUS_PAGECACHE_USED, 1);
    pSlot = (PgFreeslot*)p;
    pSlot->pNext = pcache1.pFree;
    pcache1.pFree = pSlot;
    pcache1.nFreeSlot++;
    pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
    assert( pcache1.nFreeSlot<=pcache1.nSlot );
    sqlite3_mutex_leave(pcache1.mutex);
  }else{
    assert( sqlite3MemdebugHasType(p, MEMTYPE_PCACHE) );
    sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
    nFreed = sqlite3MallocSize(p);
#ifndef SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS
    sqlite3_mutex_enter(pcache1.mutex);
    sqlite3StatusDown(SQLITE_STATUS_PAGECACHE_OVERFLOW, nFreed);
    sqlite3_mutex_leave(pcache1.mutex);
#endif
    sqlite3_free(p);
  }
  return nFreed;
}

................................................................................
  sqlite3_config(SQLITE_CONFIG_PCACHE2, &defaultMethods);
}

/*
** Return the size of the header on each page of this PCACHE implementation.
*/
int sqlite3HeaderSizePcache1(void){ return ROUND8(sizeof(PgHdr1)); }

/*
** Return the global mutex used by this PCACHE implementation.  The
** sqlite3_status() routine needs access to this mutex.
*/
sqlite3_mutex *sqlite3Pcache1Mutex(void){
  return pcache1.mutex;
}

#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/*
** This function is called to free superfluous dynamically allocated memory
** held by the pager system. Memory in use by any SQLite pager allocated
** by the current thread may be sqlite3_free()ed.
**

    pSavedWith = pParse->pWith;
    pParse->pWith = pWith;
    sqlite3WalkSelect(pWalker, bMayRecursive ? pSel->pPrior : pSel);

    for(pLeft=pSel; pLeft->pPrior; pLeft=pLeft->pPrior);
    pEList = pLeft->pEList;
    if( pCte->pCols ){
      if( pEList->nExpr!=pCte->pCols->nExpr ){
        sqlite3ErrorMsg(pParse, "table %s has %d values for %d columns",
            pCte->zName, pEList->nExpr, pCte->pCols->nExpr
        );
        pParse->pWith = pSavedWith;
        return SQLITE_ERROR;
      }
      pEList = pCte->pCols;

    pSavedWith = pParse->pWith;
    pParse->pWith = pWith;
    sqlite3WalkSelect(pWalker, bMayRecursive ? pSel->pPrior : pSel);

    for(pLeft=pSel; pLeft->pPrior; pLeft=pLeft->pPrior);
    pEList = pLeft->pEList;
    if( pCte->pCols ){
      if( pEList && pEList->nExpr!=pCte->pCols->nExpr ){
        sqlite3ErrorMsg(pParse, "table %s has %d values for %d columns",
            pCte->zName, pEList->nExpr, pCte->pCols->nExpr
        );
        pParse->pWith = pSavedWith;
        return SQLITE_ERROR;
      }
      pEList = pCte->pCols;

#if defined(INCLUDE_MSVC_H)
#include "msvc.h"
#endif

/*
** No support for loadable extensions in VxWorks.
*/
#if defined(_WRS_KERNEL) && !SQLITE_OMIT_LOAD_EXTENSION
# define SQLITE_OMIT_LOAD_EXTENSION 1
#endif

/*
** Enable large-file support for fopen() and friends on unix.
*/
#ifndef SQLITE_DISABLE_LFS
................................................................................
**   +  Use p->cSep as the column separator.  The default is ",".
**   +  Use p->rSep as the row separator.  The default is "\n".
**   +  Keep track of the line number in p->nLine.
**   +  Store the character that terminates the field in p->cTerm.  Store
**      EOF on end-of-file.
**   +  Report syntax errors on stderr
*/
static char *csv_read_one_field(ImportCtx *p){
  int c;
  int cSep = p->cColSep;
  int rSep = p->cRowSep;
  p->n = 0;
  c = fgetc(p->in);
  if( c==EOF || seenInterrupt ){
    p->cTerm = EOF;
................................................................................
**   +  Use p->cSep as the column separator.  The default is "\x1F".
**   +  Use p->rSep as the row separator.  The default is "\x1E".
**   +  Keep track of the row number in p->nLine.
**   +  Store the character that terminates the field in p->cTerm.  Store
**      EOF on end-of-file.
**   +  Report syntax errors on stderr
*/
static char *ascii_read_one_field(ImportCtx *p){
  int c;
  int cSep = p->cColSep;
  int rSep = p->cRowSep;
  p->n = 0;
  c = fgetc(p->in);
  if( c==EOF || seenInterrupt ){
    p->cTerm = EOF;
................................................................................
    int nCol;                   /* Number of columns in the table */
    int nByte;                  /* Number of bytes in an SQL string */
    int i, j;                   /* Loop counters */
    int needCommit;             /* True to COMMIT or ROLLBACK at end */
    int nSep;                   /* Number of bytes in p->colSeparator[] */
    char *zSql;                 /* An SQL statement */
    ImportCtx sCtx;             /* Reader context */
    char *(*xRead)(ImportCtx*); /* Procedure to read one value */
    int (*xCloser)(FILE*);      /* Procedure to close th3 connection */

    if( nArg!=3 ){
      fprintf(stderr, "Usage: .import FILE TABLE\n");
      goto meta_command_exit;
    }
    zFile = azArg[1];
    zTable = azArg[2];
................................................................................
                      " for import\n");
      return 1;
    }
    sCtx.zFile = zFile;
    sCtx.nLine = 1;
    if( sCtx.zFile[0]=='|' ){
#ifdef SQLITE_OMIT_POPEN
      fprintf(stderr, "Error: pipes are not supporte in this OS\n");
      return 1;
#else
      sCtx.in = popen(sCtx.zFile+1, "r");
      sCtx.zFile = "<pipe>";
      xCloser = pclose;
#endif
    }else{
................................................................................
      fprintf(stderr, "Usage: .timer on|off\n");
      rc = 1;
    }
  }else
  
  if( c=='t' && strncmp(azArg[0], "trace", n)==0 ){
    open_db(p, 0);
    output_file_close(p->traceOut);
    if( nArg!=2 ){
      fprintf(stderr, "Usage: .trace FILE|off\n");
      rc = 1;
      goto meta_command_exit;
    }

    p->traceOut = output_file_open(azArg[1]);
#if !defined(SQLITE_OMIT_TRACE) && !defined(SQLITE_OMIT_FLOATING_POINT)
    if( p->traceOut==0 ){
      sqlite3_trace(p->db, 0, 0);
    }else{
      sqlite3_trace(p->db, sql_trace_callback, p->traceOut);
    }
................................................................................
    fprintf(stderr, "%s: Error: missing argument to %s\n",
            argv[0], argv[argc-1]);
    exit(1);
  }
  return argv[i];
}

int main(int argc, char **argv){
  char *zErrMsg = 0;
  ShellState data;
  const char *zInitFile = 0;
  int i;
  int rc = 0;
  int warnInmemoryDb = 0;
  int readStdin = 1;

#if defined(INCLUDE_MSVC_H)
#include "msvc.h"
#endif

/*
** No support for loadable extensions in VxWorks.
*/
#if (defined(__RTP__) || defined(_WRS_KERNEL)) && !SQLITE_OMIT_LOAD_EXTENSION
# define SQLITE_OMIT_LOAD_EXTENSION 1
#endif

/*
** Enable large-file support for fopen() and friends on unix.
*/
#ifndef SQLITE_DISABLE_LFS
................................................................................
**   +  Use p->cSep as the column separator.  The default is ",".
**   +  Use p->rSep as the row separator.  The default is "\n".
**   +  Keep track of the line number in p->nLine.
**   +  Store the character that terminates the field in p->cTerm.  Store
**      EOF on end-of-file.
**   +  Report syntax errors on stderr
*/
static char *SQLITE_CDECL csv_read_one_field(ImportCtx *p){
  int c;
  int cSep = p->cColSep;
  int rSep = p->cRowSep;
  p->n = 0;
  c = fgetc(p->in);
  if( c==EOF || seenInterrupt ){
    p->cTerm = EOF;
................................................................................
**   +  Use p->cSep as the column separator.  The default is "\x1F".
**   +  Use p->rSep as the row separator.  The default is "\x1E".
**   +  Keep track of the row number in p->nLine.
**   +  Store the character that terminates the field in p->cTerm.  Store
**      EOF on end-of-file.
**   +  Report syntax errors on stderr
*/
static char *SQLITE_CDECL ascii_read_one_field(ImportCtx *p){
  int c;
  int cSep = p->cColSep;
  int rSep = p->cRowSep;
  p->n = 0;
  c = fgetc(p->in);
  if( c==EOF || seenInterrupt ){
    p->cTerm = EOF;
................................................................................
    int nCol;                   /* Number of columns in the table */
    int nByte;                  /* Number of bytes in an SQL string */
    int i, j;                   /* Loop counters */
    int needCommit;             /* True to COMMIT or ROLLBACK at end */
    int nSep;                   /* Number of bytes in p->colSeparator[] */
    char *zSql;                 /* An SQL statement */
    ImportCtx sCtx;             /* Reader context */
    char *(SQLITE_CDECL *xRead)(ImportCtx*); /* Func to read one value */
    int (SQLITE_CDECL *xCloser)(FILE*);      /* Func to close file */

    if( nArg!=3 ){
      fprintf(stderr, "Usage: .import FILE TABLE\n");
      goto meta_command_exit;
    }
    zFile = azArg[1];
    zTable = azArg[2];
................................................................................
                      " for import\n");
      return 1;
    }
    sCtx.zFile = zFile;
    sCtx.nLine = 1;
    if( sCtx.zFile[0]=='|' ){
#ifdef SQLITE_OMIT_POPEN
      fprintf(stderr, "Error: pipes are not supported in this OS\n");
      return 1;
#else
      sCtx.in = popen(sCtx.zFile+1, "r");
      sCtx.zFile = "<pipe>";
      xCloser = pclose;
#endif
    }else{
................................................................................
      fprintf(stderr, "Usage: .timer on|off\n");
      rc = 1;
    }
  }else
  
  if( c=='t' && strncmp(azArg[0], "trace", n)==0 ){
    open_db(p, 0);

    if( nArg!=2 ){
      fprintf(stderr, "Usage: .trace FILE|off\n");
      rc = 1;
      goto meta_command_exit;
    }
    output_file_close(p->traceOut);
    p->traceOut = output_file_open(azArg[1]);
#if !defined(SQLITE_OMIT_TRACE) && !defined(SQLITE_OMIT_FLOATING_POINT)
    if( p->traceOut==0 ){
      sqlite3_trace(p->db, 0, 0);
    }else{
      sqlite3_trace(p->db, sql_trace_callback, p->traceOut);
    }
................................................................................
    fprintf(stderr, "%s: Error: missing argument to %s\n",
            argv[0], argv[argc-1]);
    exit(1);
  }
  return argv[i];
}

int SQLITE_CDECL main(int argc, char **argv){
  char *zErrMsg = 0;
  ShellState data;
  const char *zInitFile = 0;
  int i;
  int rc = 0;
  int warnInmemoryDb = 0;
  int readStdin = 1;

/*
** Add the ability to override 'extern'
*/
#ifndef SQLITE_EXTERN
# define SQLITE_EXTERN extern
#endif








/*
** These no-op macros are used in front of interfaces to mark those
** interfaces as either deprecated or experimental.  New applications
** should not use deprecated interfaces - they are supported for backwards
** compatibility only.  Application writers should be aware that
** experimental interfaces are subject to change in point releases.
**
................................................................................
**
** <li>[[SQLITE_FCNTL_WIN32_SET_HANDLE]]
** The [SQLITE_FCNTL_WIN32_SET_HANDLE] opcode is used for debugging.  This
** opcode causes the xFileControl method to swap the file handle with the one
** pointed to by the pArg argument.  This capability is used during testing
** and only needs to be supported when SQLITE_TEST is defined.
**







** <li>[[SQLITE_FCNTL_ZIPVFS]]
** The [SQLITE_FCNTL_ZIPVFS] opcode is implemented by zipvfs only. All other
** VFS should return SQLITE_NOTFOUND for this opcode.
**
** </ul>
*/
#define SQLITE_FCNTL_LOCKSTATE               1
#define SQLITE_FCNTL_GET_LOCKPROXYFILE       2
#define SQLITE_FCNTL_SET_LOCKPROXYFILE       3
#define SQLITE_FCNTL_LAST_ERRNO              4
#define SQLITE_FCNTL_SIZE_HINT               5
................................................................................
#define SQLITE_FCNTL_TEMPFILENAME           16
#define SQLITE_FCNTL_MMAP_SIZE              18
#define SQLITE_FCNTL_TRACE                  19
#define SQLITE_FCNTL_HAS_MOVED              20
#define SQLITE_FCNTL_SYNC                   21
#define SQLITE_FCNTL_COMMIT_PHASETWO        22
#define SQLITE_FCNTL_WIN32_SET_HANDLE       23

#define SQLITE_FCNTL_ZIPVFS                 24
#define SQLITE_FCNTL_OTA                    25

/* deprecated names */
#define SQLITE_GET_LOCKPROXYFILE      SQLITE_FCNTL_GET_LOCKPROXYFILE
#define SQLITE_SET_LOCKPROXYFILE      SQLITE_FCNTL_SET_LOCKPROXYFILE
#define SQLITE_LAST_ERRNO             SQLITE_FCNTL_LAST_ERRNO


................................................................................
** interpreted as a boolean, which enables or disables the collection of
** memory allocation statistics. ^(When memory allocation statistics are
** disabled, the following SQLite interfaces become non-operational:
**   <ul>
**   <li> [sqlite3_memory_used()]
**   <li> [sqlite3_memory_highwater()]
**   <li> [sqlite3_soft_heap_limit64()]
**   <li> [sqlite3_status()]
**   </ul>)^
** ^Memory allocation statistics are enabled by default unless SQLite is
** compiled with [SQLITE_DEFAULT_MEMSTATUS]=0 in which case memory
** allocation statistics are disabled by default.
** </dd>
**
** [[SQLITE_CONFIG_SCRATCH]] <dt>SQLITE_CONFIG_SCRATCH</dt>
................................................................................
int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);


/*
** CAPI3REF: Error Codes And Messages
**
** ^The sqlite3_errcode() interface returns the numeric [result code] or
** [extended result code] for the most recent failed sqlite3_* API call
** associated with a [database connection]. If a prior API call failed
** but the most recent API call succeeded, the return value from
** sqlite3_errcode() is undefined.  ^The sqlite3_extended_errcode()


** interface is the same except that it always returns the 
** [extended result code] even when extended result codes are
** disabled.
**
** ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language
** text that describes the error, as either UTF-8 or UTF-16 respectively.
** ^(Memory to hold the error message string is managed internally.
................................................................................
** take care that any prior string is freed by a call to [sqlite3_free()]
** prior to assigning a new string to zErrMsg.  ^After the error message
** is delivered up to the client application, the string will be automatically
** freed by sqlite3_free() and the zErrMsg field will be zeroed.
*/
struct sqlite3_vtab {
  const sqlite3_module *pModule;  /* The module for this virtual table */
  int nRef;                       /* NO LONGER USED */
  char *zErrMsg;                  /* Error message from sqlite3_mprintf() */
  /* Virtual table implementations will typically add additional fields */
};

/*
** CAPI3REF: Virtual Table Cursor Object
** KEYWORDS: sqlite3_vtab_cursor {virtual table cursor}
................................................................................
#define SQLITE_TESTCTRL_SORTER_MMAP             24
#define SQLITE_TESTCTRL_IMPOSTER                25
#define SQLITE_TESTCTRL_LAST                    25

/*
** CAPI3REF: SQLite Runtime Status
**
** ^This interface is used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
** the specific parameter to measure.  ^(Recognized integer codes
** are of the form [status parameters | SQLITE_STATUS_...].)^
** ^The current value of the parameter is returned into *pCurrent.
** ^The highest recorded value is returned in *pHighwater.  ^If the
** resetFlag is true, then the highest record value is reset after
** *pHighwater is written.  ^(Some parameters do not record the highest
** value.  For those parameters
** nothing is written into *pHighwater and the resetFlag is ignored.)^
** ^(Other parameters record only the highwater mark and not the current
** value.  For these latter parameters nothing is written into *pCurrent.)^
**
** ^The sqlite3_status() routine returns SQLITE_OK on success and a
** non-zero [error code] on failure.
**
** This routine is threadsafe but is not atomic.  This routine can be
** called while other threads are running the same or different SQLite
** interfaces.  However the values returned in *pCurrent and
** *pHighwater reflect the status of SQLite at different points in time
** and it is possible that another thread might change the parameter
** in between the times when *pCurrent and *pHighwater are written.
**
** See also: [sqlite3_db_status()]
*/
int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag);








/*
** CAPI3REF: Status Parameters
** KEYWORDS: {status parameters}
**
** These integer constants designate various run-time status parameters

/*
** Add the ability to override 'extern'
*/
#ifndef SQLITE_EXTERN
# define SQLITE_EXTERN extern
#endif

/*
** Add the ability to override 'cdecl'
*/
#ifndef SQLITE_CDECL
# define SQLITE_CDECL
#endif

/*
** These no-op macros are used in front of interfaces to mark those
** interfaces as either deprecated or experimental.  New applications
** should not use deprecated interfaces - they are supported for backwards
** compatibility only.  Application writers should be aware that
** experimental interfaces are subject to change in point releases.
**
................................................................................
**
** <li>[[SQLITE_FCNTL_WIN32_SET_HANDLE]]
** The [SQLITE_FCNTL_WIN32_SET_HANDLE] opcode is used for debugging.  This
** opcode causes the xFileControl method to swap the file handle with the one
** pointed to by the pArg argument.  This capability is used during testing
** and only needs to be supported when SQLITE_TEST is defined.
**
* <li>[[SQLITE_FCNTL_WAL_BLOCK]]
** The [SQLITE_FCNTL_WAL_BLOCK] is a signal to the VFS layer that it might
** be advantageous to block on the next WAL lock if the lock is not immediately
** available.  The WAL subsystem issues this signal during rare
** circumstances in order to fix a problem with priority inversion.
** Applications should <em>not</em> use this file-control.
**
** <li>[[SQLITE_FCNTL_ZIPVFS]]
** The [SQLITE_FCNTL_ZIPVFS] opcode is implemented by zipvfs only. All other
** VFS should return SQLITE_NOTFOUND for this opcode.

** </ul>
*/
#define SQLITE_FCNTL_LOCKSTATE               1
#define SQLITE_FCNTL_GET_LOCKPROXYFILE       2
#define SQLITE_FCNTL_SET_LOCKPROXYFILE       3
#define SQLITE_FCNTL_LAST_ERRNO              4
#define SQLITE_FCNTL_SIZE_HINT               5
................................................................................
#define SQLITE_FCNTL_TEMPFILENAME           16
#define SQLITE_FCNTL_MMAP_SIZE              18
#define SQLITE_FCNTL_TRACE                  19
#define SQLITE_FCNTL_HAS_MOVED              20
#define SQLITE_FCNTL_SYNC                   21
#define SQLITE_FCNTL_COMMIT_PHASETWO        22
#define SQLITE_FCNTL_WIN32_SET_HANDLE       23
#define SQLITE_FCNTL_WAL_BLOCK              24
#define SQLITE_FCNTL_ZIPVFS                 25
#define SQLITE_FCNTL_OTA                    26

/* deprecated names */
#define SQLITE_GET_LOCKPROXYFILE      SQLITE_FCNTL_GET_LOCKPROXYFILE
#define SQLITE_SET_LOCKPROXYFILE      SQLITE_FCNTL_SET_LOCKPROXYFILE
#define SQLITE_LAST_ERRNO             SQLITE_FCNTL_LAST_ERRNO


................................................................................
** interpreted as a boolean, which enables or disables the collection of
** memory allocation statistics. ^(When memory allocation statistics are
** disabled, the following SQLite interfaces become non-operational:
**   <ul>
**   <li> [sqlite3_memory_used()]
**   <li> [sqlite3_memory_highwater()]
**   <li> [sqlite3_soft_heap_limit64()]
**   <li> [sqlite3_status64()]
**   </ul>)^
** ^Memory allocation statistics are enabled by default unless SQLite is
** compiled with [SQLITE_DEFAULT_MEMSTATUS]=0 in which case memory
** allocation statistics are disabled by default.
** </dd>
**
** [[SQLITE_CONFIG_SCRATCH]] <dt>SQLITE_CONFIG_SCRATCH</dt>
................................................................................
int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);


/*
** CAPI3REF: Error Codes And Messages
**
** ^If the most recent sqlite3_* API call associated with 
** [database connection] D failed, then the sqlite3_errcode(D) interface
** returns the numeric [result code] or [extended result code] for that
** API call.
** If the most recent API call was successful,
** then the return value from sqlite3_errcode() is undefined.
** ^The sqlite3_extended_errcode()
** interface is the same except that it always returns the 
** [extended result code] even when extended result codes are
** disabled.
**
** ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language
** text that describes the error, as either UTF-8 or UTF-16 respectively.
** ^(Memory to hold the error message string is managed internally.
................................................................................
** take care that any prior string is freed by a call to [sqlite3_free()]
** prior to assigning a new string to zErrMsg.  ^After the error message
** is delivered up to the client application, the string will be automatically
** freed by sqlite3_free() and the zErrMsg field will be zeroed.
*/
struct sqlite3_vtab {
  const sqlite3_module *pModule;  /* The module for this virtual table */
  int nRef;                       /* Number of open cursors */
  char *zErrMsg;                  /* Error message from sqlite3_mprintf() */
  /* Virtual table implementations will typically add additional fields */
};

/*
** CAPI3REF: Virtual Table Cursor Object
** KEYWORDS: sqlite3_vtab_cursor {virtual table cursor}
................................................................................
#define SQLITE_TESTCTRL_SORTER_MMAP             24
#define SQLITE_TESTCTRL_IMPOSTER                25
#define SQLITE_TESTCTRL_LAST                    25

/*
** CAPI3REF: SQLite Runtime Status
**
** ^These interfaces are used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
** the specific parameter to measure.  ^(Recognized integer codes
** are of the form [status parameters | SQLITE_STATUS_...].)^
** ^The current value of the parameter is returned into *pCurrent.
** ^The highest recorded value is returned in *pHighwater.  ^If the
** resetFlag is true, then the highest record value is reset after
** *pHighwater is written.  ^(Some parameters do not record the highest
** value.  For those parameters
** nothing is written into *pHighwater and the resetFlag is ignored.)^
** ^(Other parameters record only the highwater mark and not the current
** value.  For these latter parameters nothing is written into *pCurrent.)^
**
** ^The sqlite3_status() and sqlite3_status64() routines return
** SQLITE_OK on success and a non-zero [error code] on failure.
**
** If either the current value or the highwater mark is too large to
** be represented by a 32-bit integer, then the values returned by
** sqlite3_status() are undefined.



**
** See also: [sqlite3_db_status()]
*/
int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag);
int sqlite3_status64(
  int op,
  sqlite3_int64 *pCurrent,
  sqlite3_int64 *pHighwater,
  int resetFlag
);


/*
** CAPI3REF: Status Parameters
** KEYWORDS: {status parameters}
**
** These integer constants designate various run-time status parameters

** The LogEst can be negative to indicate fractional values. 
** Examples:
**
**    0.5 -> -10           0.1 -> -33        0.0625 -> -40
*/
typedef INT16_TYPE LogEst;















/*
** Macros to determine whether the machine is big or little endian,
** and whether or not that determination is run-time or compile-time.
**
** For best performance, an attempt is made to guess at the byte-order
** using C-preprocessor macros.  If that is unsuccessful, or if
** -DSQLITE_RUNTIME_BYTEORDER=1 is set, then byte-order is determined
................................................................................
    u8 orphanTrigger;           /* Last statement is orphaned TEMP trigger */
    u8 imposterTable;           /* Building an imposter table */
  } init;
  int nVdbeActive;              /* Number of VDBEs currently running */
  int nVdbeRead;                /* Number of active VDBEs that read or write */
  int nVdbeWrite;               /* Number of active VDBEs that read and write */
  int nVdbeExec;                /* Number of nested calls to VdbeExec() */

  int nExtension;               /* Number of loaded extensions */
  void **aExtension;            /* Array of shared library handles */
  void (*xTrace)(void*,const char*);        /* Trace function */
  void *pTraceArg;                          /* Argument to the trace function */
  void (*xProfile)(void*,const char*,u64);  /* Profiling function */
  void *pProfileArg;                        /* Argument to profile function */
  void *pCommitArg;                 /* Argument to xCommitCallback() */   
................................................................................
#define OPFLAG_LASTROWID     0x02    /* Set to update db->lastRowid */
#define OPFLAG_ISUPDATE      0x04    /* This OP_Insert is an sql UPDATE */
#define OPFLAG_APPEND        0x08    /* This is likely to be an append */
#define OPFLAG_USESEEKRESULT 0x10    /* Try to avoid a seek in BtreeInsert() */
#define OPFLAG_LENGTHARG     0x40    /* OP_Column only used for length() */
#define OPFLAG_TYPEOFARG     0x80    /* OP_Column only used for typeof() */
#define OPFLAG_BULKCSR       0x01    /* OP_Open** used to open bulk cursor */

#define OPFLAG_P2ISREG       0x02    /* P2 to OP_Open** is a register number */
#define OPFLAG_PERMUTE       0x01    /* OP_Compare: use the permutation */

/*
 * Each trigger present in the database schema is stored as an instance of
 * struct Trigger. 
 *
 * Pointers to instances of struct Trigger are stored in two ways.
................................................................................
  sqlite3_mutex_methods const *sqlite3DefaultMutex(void);
  sqlite3_mutex_methods const *sqlite3NoopMutex(void);
  sqlite3_mutex *sqlite3MutexAlloc(int);
  int sqlite3MutexInit(void);
  int sqlite3MutexEnd(void);
#endif

int sqlite3StatusValue(int);
void sqlite3StatusAdd(int, int);

void sqlite3StatusSet(int, int);





#ifndef SQLITE_OMIT_FLOATING_POINT
  int sqlite3IsNaN(double);
#else
# define sqlite3IsNaN(X)  0
#endif

................................................................................
#endif

const char *sqlite3ErrStr(int);
int sqlite3ReadSchema(Parse *pParse);
CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int);
CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*);
Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
Expr *sqlite3ExprSkipCollate(Expr*);
int sqlite3CheckCollSeq(Parse *, CollSeq *);
int sqlite3CheckObjectName(Parse *, const char *);
void sqlite3VdbeSetChanges(sqlite3 *, int);
int sqlite3AddInt64(i64*,i64);
int sqlite3SubInt64(i64*,i64);

** The LogEst can be negative to indicate fractional values. 
** Examples:
**
**    0.5 -> -10           0.1 -> -33        0.0625 -> -40
*/
typedef INT16_TYPE LogEst;

/*
** Set the SQLITE_PTRSIZE macro to the number of bytes in a pointer
*/
#ifndef SQLITE_PTRSIZE
# if defined(__SIZEOF_POINTER__)
#   define SQLITE_PTRSIZE __SIZEOF_POINTER__
# elif defined(i386)     || defined(__i386__)   || defined(_M_IX86) ||    \
       defined(_M_ARM)   || defined(__arm__)    || defined(__x86)
#   define SQLITE_PTRSIZE 4
# else
#   define SQLITE_PTRSIZE 8
# endif
#endif

/*
** Macros to determine whether the machine is big or little endian,
** and whether or not that determination is run-time or compile-time.
**
** For best performance, an attempt is made to guess at the byte-order
** using C-preprocessor macros.  If that is unsuccessful, or if
** -DSQLITE_RUNTIME_BYTEORDER=1 is set, then byte-order is determined
................................................................................
    u8 orphanTrigger;           /* Last statement is orphaned TEMP trigger */
    u8 imposterTable;           /* Building an imposter table */
  } init;
  int nVdbeActive;              /* Number of VDBEs currently running */
  int nVdbeRead;                /* Number of active VDBEs that read or write */
  int nVdbeWrite;               /* Number of active VDBEs that read and write */
  int nVdbeExec;                /* Number of nested calls to VdbeExec() */
  int nVDestroy;                /* Number of active OP_VDestroy operations */
  int nExtension;               /* Number of loaded extensions */
  void **aExtension;            /* Array of shared library handles */
  void (*xTrace)(void*,const char*);        /* Trace function */
  void *pTraceArg;                          /* Argument to the trace function */
  void (*xProfile)(void*,const char*,u64);  /* Profiling function */
  void *pProfileArg;                        /* Argument to profile function */
  void *pCommitArg;                 /* Argument to xCommitCallback() */   
................................................................................
#define OPFLAG_LASTROWID     0x02    /* Set to update db->lastRowid */
#define OPFLAG_ISUPDATE      0x04    /* This OP_Insert is an sql UPDATE */
#define OPFLAG_APPEND        0x08    /* This is likely to be an append */
#define OPFLAG_USESEEKRESULT 0x10    /* Try to avoid a seek in BtreeInsert() */
#define OPFLAG_LENGTHARG     0x40    /* OP_Column only used for length() */
#define OPFLAG_TYPEOFARG     0x80    /* OP_Column only used for typeof() */
#define OPFLAG_BULKCSR       0x01    /* OP_Open** used to open bulk cursor */
#define OPFLAG_SEEKEQ        0x02    /* OP_Open** cursor uses EQ seek only */
#define OPFLAG_P2ISREG       0x04    /* P2 to OP_Open** is a register number */
#define OPFLAG_PERMUTE       0x01    /* OP_Compare: use the permutation */

/*
 * Each trigger present in the database schema is stored as an instance of
 * struct Trigger. 
 *
 * Pointers to instances of struct Trigger are stored in two ways.
................................................................................
  sqlite3_mutex_methods const *sqlite3DefaultMutex(void);
  sqlite3_mutex_methods const *sqlite3NoopMutex(void);
  sqlite3_mutex *sqlite3MutexAlloc(int);
  int sqlite3MutexInit(void);
  int sqlite3MutexEnd(void);
#endif

sqlite3_int64 sqlite3StatusValue(int);
void sqlite3StatusUp(int, int);
void sqlite3StatusDown(int, int);
void sqlite3StatusSet(int, int);

/* Access to mutexes used by sqlite3_status() */
sqlite3_mutex *sqlite3Pcache1Mutex(void);
sqlite3_mutex *sqlite3MallocMutex(void);

#ifndef SQLITE_OMIT_FLOATING_POINT
  int sqlite3IsNaN(double);
#else
# define sqlite3IsNaN(X)  0
#endif

................................................................................
#endif

const char *sqlite3ErrStr(int);
int sqlite3ReadSchema(Parse *pParse);
CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int);
CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
Expr *sqlite3ExprSkipCollate(Expr*);
int sqlite3CheckCollSeq(Parse *, CollSeq *);
int sqlite3CheckObjectName(Parse *, const char *);
void sqlite3VdbeSetChanges(sqlite3 *, int);
int sqlite3AddInt64(i64*,i64);
int sqlite3SubInt64(i64*,i64);

#include "vdbeInt.h"

/*
** Variables in which to record status information.
*/
typedef struct sqlite3StatType sqlite3StatType;
static SQLITE_WSD struct sqlite3StatType {

  int nowValue[10];         /* Current value */
  int mxValue[10];          /* Maximum value */




} sqlite3Stat = { {0,}, {0,} };



















/* The "wsdStat" macro will resolve to the status information
** state vector.  If writable static data is unsupported on the target,
** we have to locate the state vector at run-time.  In the more common
** case where writable static data is supported, wsdStat can refer directly
** to the "sqlite3Stat" state vector declared above.
................................................................................
# define wsdStat x[0]
#else
# define wsdStatInit
# define wsdStat sqlite3Stat
#endif

/*
** Return the current value of a status parameter.

*/
int sqlite3StatusValue(int op){
  wsdStatInit;
  assert( op>=0 && op<ArraySize(wsdStat.nowValue) );



  return wsdStat.nowValue[op];
}

/*
** Add N to the value of a status record.  It is assumed that the
** caller holds appropriate locks.







*/
void sqlite3StatusAdd(int op, int N){
  wsdStatInit;
  assert( op>=0 && op<ArraySize(wsdStat.nowValue) );



  wsdStat.nowValue[op] += N;
  if( wsdStat.nowValue[op]>wsdStat.mxValue[op] ){
    wsdStat.mxValue[op] = wsdStat.nowValue[op];
  }
}










/*
** Set the value of a status to X.

*/
void sqlite3StatusSet(int op, int X){
  wsdStatInit;
  assert( op>=0 && op<ArraySize(wsdStat.nowValue) );



  wsdStat.nowValue[op] = X;
  if( wsdStat.nowValue[op]>wsdStat.mxValue[op] ){
    wsdStat.mxValue[op] = wsdStat.nowValue[op];
  }
}

/*
** Query status information.
**
** This implementation assumes that reading or writing an aligned
** 32-bit integer is an atomic operation.  If that assumption is not true,
** then this routine is not threadsafe.
*/
int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag){


  wsdStatInit;
  if( op<0 || op>=ArraySize(wsdStat.nowValue) ){
    return SQLITE_MISUSE_BKPT;
  }
#ifdef SQLITE_ENABLE_API_ARMOR
  if( pCurrent==0 || pHighwater==0 ) return SQLITE_MISUSE_BKPT;
#endif


  *pCurrent = wsdStat.nowValue[op];
  *pHighwater = wsdStat.mxValue[op];
  if( resetFlag ){
    wsdStat.mxValue[op] = wsdStat.nowValue[op];
  }

  return SQLITE_OK;













}

/*
** Query status information for a single database connection
*/
int sqlite3_db_status(
  sqlite3 *db,          /* The database connection whose status is desired */

#include "vdbeInt.h"

/*
** Variables in which to record status information.
*/
typedef struct sqlite3StatType sqlite3StatType;
static SQLITE_WSD struct sqlite3StatType {
#if SQLITE_PTRSIZE>4
  sqlite3_int64 nowValue[10];         /* Current value */
  sqlite3_int64 mxValue[10];          /* Maximum value */
#else
  u32 nowValue[10];                   /* Current value */
  u32 mxValue[10];                    /* Maximum value */
#endif
} sqlite3Stat = { {0,}, {0,} };

/*
** Elements of sqlite3Stat[] are protected by either the memory allocator
** mutex, or by the pcache1 mutex.  The following array determines which.
*/
static const char statMutex[] = {
  0,  /* SQLITE_STATUS_MEMORY_USED */
  1,  /* SQLITE_STATUS_PAGECACHE_USED */
  1,  /* SQLITE_STATUS_PAGECACHE_OVERFLOW */
  0,  /* SQLITE_STATUS_SCRATCH_USED */
  0,  /* SQLITE_STATUS_SCRATCH_OVERFLOW */
  0,  /* SQLITE_STATUS_MALLOC_SIZE */
  0,  /* SQLITE_STATUS_PARSER_STACK */
  1,  /* SQLITE_STATUS_PAGECACHE_SIZE */
  0,  /* SQLITE_STATUS_SCRATCH_SIZE */
  0,  /* SQLITE_STATUS_MALLOC_COUNT */
};


/* The "wsdStat" macro will resolve to the status information
** state vector.  If writable static data is unsupported on the target,
** we have to locate the state vector at run-time.  In the more common
** case where writable static data is supported, wsdStat can refer directly
** to the "sqlite3Stat" state vector declared above.
................................................................................
# define wsdStat x[0]
#else
# define wsdStatInit
# define wsdStat sqlite3Stat
#endif

/*
** Return the current value of a status parameter.  The caller must
** be holding the appropriate mutex.
*/
sqlite3_int64 sqlite3StatusValue(int op){
  wsdStatInit;
  assert( op>=0 && op<ArraySize(wsdStat.nowValue) );
  assert( op>=0 && op<ArraySize(statMutex) );
  assert( sqlite3_mutex_held(statMutex[op] ? sqlite3Pcache1Mutex()
                                           : sqlite3MallocMutex()) );
  return wsdStat.nowValue[op];
}

/*
** Add N to the value of a status record.  The caller must hold the
** appropriate mutex.  (Locking is checked by assert()).
**
** The StatusUp() routine can accept positive or negative values for N.
** The value of N is added to the current status value and the high-water
** mark is adjusted if necessary.
**
** The StatusDown() routine lowers the current value by N.  The highwater
** mark is unchanged.  N must be non-negative for StatusDown().
*/
void sqlite3StatusUp(int op, int N){
  wsdStatInit;
  assert( op>=0 && op<ArraySize(wsdStat.nowValue) );
  assert( op>=0 && op<ArraySize(statMutex) );
  assert( sqlite3_mutex_held(statMutex[op] ? sqlite3Pcache1Mutex()
                                           : sqlite3MallocMutex()) );
  wsdStat.nowValue[op] += N;
  if( wsdStat.nowValue[op]>wsdStat.mxValue[op] ){
    wsdStat.mxValue[op] = wsdStat.nowValue[op];
  }
}
void sqlite3StatusDown(int op, int N){
  wsdStatInit;
  assert( N>=0 );
  assert( op>=0 && op<ArraySize(statMutex) );
  assert( sqlite3_mutex_held(statMutex[op] ? sqlite3Pcache1Mutex()
                                           : sqlite3MallocMutex()) );
  assert( op>=0 && op<ArraySize(wsdStat.nowValue) );
  wsdStat.nowValue[op] -= N;
}

/*
** Set the value of a status to X.  The highwater mark is adjusted if
** necessary.  The caller must hold the appropriate mutex.
*/
void sqlite3StatusSet(int op, int X){
  wsdStatInit;
  assert( op>=0 && op<ArraySize(wsdStat.nowValue) );
  assert( op>=0 && op<ArraySize(statMutex) );
  assert( sqlite3_mutex_held(statMutex[op] ? sqlite3Pcache1Mutex()
                                           : sqlite3MallocMutex()) );
  wsdStat.nowValue[op] = X;
  if( wsdStat.nowValue[op]>wsdStat.mxValue[op] ){
    wsdStat.mxValue[op] = wsdStat.nowValue[op];
  }
}

/*
** Query status information.
*/
int sqlite3_status64(
  int op,
  sqlite3_int64 *pCurrent,
  sqlite3_int64 *pHighwater,
  int resetFlag
){
  sqlite3_mutex *pMutex;
  wsdStatInit;
  if( op<0 || op>=ArraySize(wsdStat.nowValue) ){
    return SQLITE_MISUSE_BKPT;
  }
#ifdef SQLITE_ENABLE_API_ARMOR
  if( pCurrent==0 || pHighwater==0 ) return SQLITE_MISUSE_BKPT;
#endif
  pMutex = statMutex[op] ? sqlite3Pcache1Mutex() : sqlite3MallocMutex();
  sqlite3_mutex_enter(pMutex);
  *pCurrent = wsdStat.nowValue[op];
  *pHighwater = wsdStat.mxValue[op];
  if( resetFlag ){
    wsdStat.mxValue[op] = wsdStat.nowValue[op];
  }
  sqlite3_mutex_leave(pMutex);
  return SQLITE_OK;
}
int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag){
  sqlite3_int64 iCur, iHwtr;
  int rc;
#ifdef SQLITE_ENABLE_API_ARMOR
  if( pCurrent==0 || pHighwater==0 ) return SQLITE_MISUSE_BKPT;
#endif
  rc = sqlite3_status64(op, &iCur, &iHwtr, resetFlag);
  if( rc==0 ){
    *pCurrent = (int)iCur;
    *pHighwater = (int)iHwtr;
  }
  return rc;
}

/*
** Query status information for a single database connection
*/
int sqlite3_db_status(
  sqlite3 *db,          /* The database connection whose status is desired */

      cd[1] = (void *)pScript;
      rc = DbEvalNextCmd(cd, interp, TCL_OK);
    }
    break;
  }

  /*
  **     $db function NAME [-argcount N] SCRIPT
  **
  ** Create a new SQL function called NAME.  Whenever that function is
  ** called, invoke SCRIPT to evaluate the function.
  */
  case DB_FUNCTION: {

    SqlFunc *pFunc;
    Tcl_Obj *pScript;
    char *zName;
    int nArg = -1;

    if( objc==6 ){




      const char *z = Tcl_GetString(objv[3]);
      int n = strlen30(z);
      if( n>2 && strncmp(z, "-argcount",n)==0 ){




        if( Tcl_GetIntFromObj(interp, objv[4], &nArg) ) return TCL_ERROR;
        if( nArg<0 ){
          Tcl_AppendResult(interp, "number of arguments must be non-negative",
                           (char*)0);
          return TCL_ERROR;
        }
      }
      pScript = objv[5];

    }else if( objc!=4 ){

      Tcl_WrongNumArgs(interp, 2, objv, "NAME [-argcount N] SCRIPT");
      return TCL_ERROR;
    }else{

      pScript = objv[3];


    }



    zName = Tcl_GetStringFromObj(objv[2], 0);
    pFunc = findSqlFunc(pDb, zName);
    if( pFunc==0 ) return TCL_ERROR;
    if( pFunc->pScript ){
      Tcl_DecrRefCount(pFunc->pScript);
    }
    pFunc->pScript = pScript;
    Tcl_IncrRefCount(pScript);
    pFunc->useEvalObjv = safeToUseEvalObjv(interp, pScript);
    rc = sqlite3_create_function(pDb->db, zName, nArg, SQLITE_UTF8,
        pFunc, tclSqlFunc, 0, 0);
    if( rc!=SQLITE_OK ){
      rc = TCL_ERROR;
      Tcl_SetResult(interp, (char *)sqlite3_errmsg(pDb->db), TCL_VOLATILE);
    }
    break;
  }

      cd[1] = (void *)pScript;
      rc = DbEvalNextCmd(cd, interp, TCL_OK);
    }
    break;
  }

  /*
  **     $db function NAME [-argcount N] [-deterministic] SCRIPT
  **
  ** Create a new SQL function called NAME.  Whenever that function is
  ** called, invoke SCRIPT to evaluate the function.
  */
  case DB_FUNCTION: {
    int flags = SQLITE_UTF8;
    SqlFunc *pFunc;
    Tcl_Obj *pScript;
    char *zName;
    int nArg = -1;
    int i;
    if( objc<4 ){
      Tcl_WrongNumArgs(interp, 2, objv, "NAME ?SWITCHES? SCRIPT");
      return TCL_ERROR;
    }
    for(i=3; i<(objc-1); i++){
      const char *z = Tcl_GetString(objv[i]);
      int n = strlen30(z);
      if( n>2 && strncmp(z, "-argcount",n)==0 ){
        if( i==(objc-2) ){
          Tcl_AppendResult(interp, "option requires an argument: ", z, 0);
          return TCL_ERROR;
        }
        if( Tcl_GetIntFromObj(interp, objv[i+1], &nArg) ) return TCL_ERROR;
        if( nArg<0 ){
          Tcl_AppendResult(interp, "number of arguments must be non-negative",
                           (char*)0);
          return TCL_ERROR;
        }


        i++;
      }else
      if( n>2 && strncmp(z, "-deterministic",n)==0 ){
        flags |= SQLITE_DETERMINISTIC;

      }else{
        Tcl_AppendResult(interp, "bad option \"", z, 
            "\": must be -argcount or -deterministic", 0
        );
        return TCL_ERROR;
      }
    }

    pScript = objv[objc-1];
    zName = Tcl_GetStringFromObj(objv[2], 0);
    pFunc = findSqlFunc(pDb, zName);
    if( pFunc==0 ) return TCL_ERROR;
    if( pFunc->pScript ){
      Tcl_DecrRefCount(pFunc->pScript);
    }
    pFunc->pScript = pScript;
    Tcl_IncrRefCount(pScript);
    pFunc->useEvalObjv = safeToUseEvalObjv(interp, pScript);
    rc = sqlite3_create_function(pDb->db, zName, nArg, flags,
        pFunc, tclSqlFunc, 0, 0);
    if( rc!=SQLITE_OK ){
      rc = TCL_ERROR;
      Tcl_SetResult(interp, (char *)sqlite3_errmsg(pDb->db), TCL_VOLATILE);
    }
    break;
  }

    }
  }

  sqlite3_result_text(context, Tcl_GetString(pRet), -1, SQLITE_TRANSIENT);
  Tcl_DecrRefCount(pRet);
}
















static int registerTestFunctions(sqlite3 *db){
  static const struct {
     char *zName;
     signed char nArg;
     unsigned char eTextRep; /* 1: UTF-16.  0: UTF-8 */
     void (*xFunc)(sqlite3_context*,int,sqlite3_value **);
  } aFuncs[] = {
    { "randstr",               2, SQLITE_UTF8, randStr    },
    { "test_destructor",       1, SQLITE_UTF8, test_destructor},
#ifndef SQLITE_OMIT_UTF16
    { "test_destructor16",     1, SQLITE_UTF8, test_destructor16},
    { "hex_to_utf16be",        1, SQLITE_UTF8, testHexToUtf16be},
................................................................................
    { "test_error",            2, SQLITE_UTF8, test_error},
    { "test_eval",             1, SQLITE_UTF8, test_eval},
    { "test_isolation",        2, SQLITE_UTF8, test_isolation},
    { "test_counter",          1, SQLITE_UTF8, counterFunc},
    { "real2hex",              1, SQLITE_UTF8, real2hex},
    { "test_decode",           1, SQLITE_UTF8, test_decode},
    { "test_extract",          2, SQLITE_UTF8, test_extract},

  };
  int i;

  for(i=0; i<sizeof(aFuncs)/sizeof(aFuncs[0]); i++){
    sqlite3_create_function(db, aFuncs[i].zName, aFuncs[i].nArg,
        aFuncs[i].eTextRep, 0, aFuncs[i].xFunc, 0, 0);
  }

    }
  }

  sqlite3_result_text(context, Tcl_GetString(pRet), -1, SQLITE_TRANSIENT);
  Tcl_DecrRefCount(pRet);
}

/*
** The implementation of scalar SQL function "test_zeroblob()". This is
** similar to the built-in zeroblob() function, except that it does not
** check that the integer parameter is within range before passing it
** to sqlite3_result_zeroblob().
*/
static void test_zeroblob(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int nZero = sqlite3_value_int(argv[0]);
  sqlite3_result_zeroblob(context, nZero);
}

static int registerTestFunctions(sqlite3 *db){
  static const struct {
     char *zName;
     signed char nArg;
     unsigned int eTextRep; /* 1: UTF-16.  0: UTF-8 */
     void (*xFunc)(sqlite3_context*,int,sqlite3_value **);
  } aFuncs[] = {
    { "randstr",               2, SQLITE_UTF8, randStr    },
    { "test_destructor",       1, SQLITE_UTF8, test_destructor},
#ifndef SQLITE_OMIT_UTF16
    { "test_destructor16",     1, SQLITE_UTF8, test_destructor16},
    { "hex_to_utf16be",        1, SQLITE_UTF8, testHexToUtf16be},
................................................................................
    { "test_error",            2, SQLITE_UTF8, test_error},
    { "test_eval",             1, SQLITE_UTF8, test_eval},
    { "test_isolation",        2, SQLITE_UTF8, test_isolation},
    { "test_counter",          1, SQLITE_UTF8, counterFunc},
    { "real2hex",              1, SQLITE_UTF8, real2hex},
    { "test_decode",           1, SQLITE_UTF8, test_decode},
    { "test_extract",          2, SQLITE_UTF8, test_extract},
    { "test_zeroblob",  1, SQLITE_UTF8|SQLITE_DETERMINISTIC, test_zeroblob},
  };
  int i;

  for(i=0; i<sizeof(aFuncs)/sizeof(aFuncs[0]); i++){
    sqlite3_create_function(db, aFuncs[i].zName, aFuncs[i].nArg,
        aFuncs[i].eTextRep, 0, aFuncs[i].xFunc, 0, 0);
  }

    }
    if( rc==SQLITE_OK ){
      sqlite3_int64 sz;

      rc = pSubOpen->pMethods->xFileSize(pSubOpen, &sz);
      if( rc==SQLITE_OK && zName ){
        int bExists;



        if( sz==0 ){
          if( flags & SQLITE_OPEN_MAIN_JOURNAL ){
            /* If opening a main journal file and the first chunk is zero
            ** bytes in size, delete any subsequent chunks from the 
            ** file-system. */
            int iChunk = 1;
            do {

    }
    if( rc==SQLITE_OK ){
      sqlite3_int64 sz;

      rc = pSubOpen->pMethods->xFileSize(pSubOpen, &sz);
      if( rc==SQLITE_OK && zName ){
        int bExists;
        if( flags & SQLITE_OPEN_MASTER_JOURNAL ){
          pGroup->bEnabled = 0;
        }else
        if( sz==0 ){
          if( flags & SQLITE_OPEN_MAIN_JOURNAL ){
            /* If opening a main journal file and the first chunk is zero
            ** bytes in size, delete any subsequent chunks from the 
            ** file-system. */
            int iChunk = 1;
            do {

  return rc;
}

static void tvfsShmBarrier(sqlite3_file *pFile){
  TestvfsFd *pFd = tvfsGetFd(pFile);
  Testvfs *p = (Testvfs *)(pFd->pVfs->pAppData);






  if( p->isFullshm ){
    sqlite3OsShmBarrier(pFd->pReal);
    return;
  }

  if( p->pScript && p->mask&TESTVFS_SHMBARRIER_MASK ){
    tvfsExecTcl(p, "xShmBarrier", 
        Tcl_NewStringObj(pFd->pShm->zFile, -1), pFd->pShmId, 0, 0
    );
  }
}

static int tvfsShmUnmap(
  sqlite3_file *pFile,
  int deleteFlag
){
  int rc = SQLITE_OK;
................................................................................
  p->mask = TESTVFS_ALL_MASK;

  sqlite3_vfs_register(pVfs, isDefault);

  return TCL_OK;

 bad_args:
  Tcl_WrongNumArgs(interp, 1, objv, "VFSNAME ?-noshm BOOL? ?-default BOOL? ?-mxpathname INT? ?-szosfile INT? ?-iversion INT?");
  return TCL_ERROR;
}

int Sqlitetestvfs_Init(Tcl_Interp *interp){
  Tcl_CreateObjCommand(interp, "testvfs", testvfs_cmd, 0, 0);
  return TCL_OK;
}

#endif

  return rc;
}

static void tvfsShmBarrier(sqlite3_file *pFile){
  TestvfsFd *pFd = tvfsGetFd(pFile);
  Testvfs *p = (Testvfs *)(pFd->pVfs->pAppData);

  if( p->pScript && p->mask&TESTVFS_SHMBARRIER_MASK ){
    const char *z = pFd->pShm ? pFd->pShm->zFile : "";
    tvfsExecTcl(p, "xShmBarrier", Tcl_NewStringObj(z, -1), pFd->pShmId, 0, 0);
  }

  if( p->isFullshm ){
    sqlite3OsShmBarrier(pFd->pReal);
    return;
  }






}

static int tvfsShmUnmap(
  sqlite3_file *pFile,
  int deleteFlag
){
  int rc = SQLITE_OK;
................................................................................
  p->mask = TESTVFS_ALL_MASK;

  sqlite3_vfs_register(pVfs, isDefault);

  return TCL_OK;

 bad_args:
  Tcl_WrongNumArgs(interp, 1, objv, "VFSNAME ?-noshm BOOL? ?-fullshm BOOL? ?-default BOOL? ?-mxpathname INT? ?-szosfile INT? ?-iversion INT?");
  return TCL_ERROR;
}

int Sqlitetestvfs_Init(Tcl_Interp *interp){
  Tcl_CreateObjCommand(interp, "testvfs", testvfs_cmd, 0, 0);
  return TCL_OK;
}

#endif

    if( lastTokenParsed!=TK_SEMI ){
      sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse);
      pParse->zTail = &zSql[i];
    }
    sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
  }
#ifdef YYTRACKMAXSTACKDEPTH

  sqlite3StatusSet(SQLITE_STATUS_PARSER_STACK,
      sqlite3ParserStackPeak(pEngine)
  );

#endif /* YYDEBUG */
  sqlite3ParserFree(pEngine, sqlite3_free);
  db->lookaside.bEnabled = enableLookaside;
  if( db->mallocFailed ){
    pParse->rc = SQLITE_NOMEM;
  }
  if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){

    if( lastTokenParsed!=TK_SEMI ){
      sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse);
      pParse->zTail = &zSql[i];
    }
    sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
  }
#ifdef YYTRACKMAXSTACKDEPTH
  sqlite3_mutex_enter(sqlite3MallocMutex());
  sqlite3StatusSet(SQLITE_STATUS_PARSER_STACK,
      sqlite3ParserStackPeak(pEngine)
  );
  sqlite3_mutex_leave(sqlite3MallocMutex());
#endif /* YYDEBUG */
  sqlite3ParserFree(pEngine, sqlite3_free);
  db->lookaside.bEnabled = enableLookaside;
  if( db->mallocFailed ){
    pParse->rc = SQLITE_NOMEM;
  }
  if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){

**
** If P1 is not zero, then it is a register that a subsequent min() or
** max() aggregate will set to 1 if the current row is not the minimum or
** maximum.  The P1 register is initialized to 0 by this instruction.
**
** The interface used by the implementation of the aforementioned functions
** to retrieve the collation sequence set by this opcode is not available
** publicly, only to user functions defined in func.c.
*/
case OP_CollSeq: {
  assert( pOp->p4type==P4_COLLSEQ );
  if( pOp->p1 ){
    sqlite3VdbeMemSetInt64(&aMem[pOp->p1], 0);
  }
  break;
................................................................................
** This instruction works just like OpenRead except that it opens the cursor
** in read/write mode.  For a given table, there can be one or more read-only
** cursors or a single read/write cursor but not both.
**
** See also OpenRead.
*/
case OP_ReopenIdx: {
  VdbeCursor *pCur;

  assert( pOp->p5==0 );
  assert( pOp->p4type==P4_KEYINFO );
  pCur = p->apCsr[pOp->p1];
  if( pCur && pCur->pgnoRoot==(u32)pOp->p2 ){
    assert( pCur->iDb==pOp->p3 );      /* Guaranteed by the code generator */
    break;
  }
  /* If the cursor is not currently open or is open on a different
  ** index, then fall through into OP_OpenRead to force a reopen */
}
case OP_OpenRead:
case OP_OpenWrite: {
  int nField;
  KeyInfo *pKeyInfo;
  int p2;
  int iDb;
  int wrFlag;
  Btree *pX;
  VdbeCursor *pCur;
  Db *pDb;













  assert( (pOp->p5&(OPFLAG_P2ISREG|OPFLAG_BULKCSR))==pOp->p5 );
  assert( pOp->opcode==OP_OpenWrite || pOp->p5==0 );
  assert( p->bIsReader );
  assert( pOp->opcode==OP_OpenRead || pOp->opcode==OP_ReopenIdx
          || p->readOnly==0 );

  if( p->expired ){
    rc = SQLITE_ABORT_ROLLBACK;
    break;
................................................................................
  pCur = allocateCursor(p, pOp->p1, nField, iDb, 1);
  if( pCur==0 ) goto no_mem;
  pCur->nullRow = 1;
  pCur->isOrdered = 1;
  pCur->pgnoRoot = p2;
  rc = sqlite3BtreeCursor(pX, p2, wrFlag, pKeyInfo, pCur->pCursor);
  pCur->pKeyInfo = pKeyInfo;
  assert( OPFLAG_BULKCSR==BTREE_BULKLOAD );
  sqlite3BtreeCursorHints(pCur->pCursor, (pOp->p5 & OPFLAG_BULKCSR));

  /* Set the VdbeCursor.isTable variable. Previous versions of
  ** SQLite used to check if the root-page flags were sane at this point
  ** and report database corruption if they were not, but this check has
  ** since moved into the btree layer.  */  
  pCur->isTable = pOp->p4type!=P4_KEYINFO;






  break;
}

/* Opcode: OpenEphemeral P1 P2 * P4 P5
** Synopsis: nColumn=P2
**
** Open a new cursor P1 to a transient table.
................................................................................
  assert( pC->isOrdered );
  assert( pC->pCursor!=0 );
  oc = pOp->opcode;
  pC->nullRow = 0;
#ifdef SQLITE_DEBUG
  pC->seekOp = pOp->opcode;
#endif
















  if( pC->isTable ){
    /* The input value in P3 might be of any type: integer, real, string,
    ** blob, or NULL.  But it needs to be an integer before we can do
    ** the seek, so convert it. */
    pIn3 = &aMem[pOp->p3];
    if( (pIn3->flags & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){
      applyNumericAffinity(pIn3, 0);
................................................................................
** the last one in the database) then a zero is stored in register P2.
** If AUTOVACUUM is disabled then a zero is stored in register P2.
**
** See also: Clear
*/
case OP_Destroy: {     /* out2-prerelease */
  int iMoved;
  int iCnt;
  Vdbe *pVdbe;
  int iDb;

  assert( p->readOnly==0 );
#ifndef SQLITE_OMIT_VIRTUALTABLE
  iCnt = 0;
  for(pVdbe=db->pVdbe; pVdbe; pVdbe = pVdbe->pNext){
    if( pVdbe->magic==VDBE_MAGIC_RUN && pVdbe->bIsReader 
     && pVdbe->inVtabMethod<2 && pVdbe->pc>=0 
    ){
      iCnt++;
    }
  }
#else
  iCnt = db->nVdbeRead;
#endif
  pOut->flags = MEM_Null;
  if( iCnt>1 ){

    rc = SQLITE_LOCKED;
    p->errorAction = OE_Abort;
  }else{
    iDb = pOp->p3;
    assert( iCnt==1 );
    assert( DbMaskTest(p->btreeMask, iDb) );
    iMoved = 0;  /* Not needed.  Only to silence a warning. */
    rc = sqlite3BtreeDropTable(db->aDb[iDb].pBt, pOp->p1, &iMoved);
    pOut->flags = MEM_Int;
    pOut->u.i = iMoved;
#ifndef SQLITE_OMIT_AUTOVACUUM
    if( rc==SQLITE_OK && iMoved!=0 ){
................................................................................
  rc = sqlite3VtabBegin(db, pVTab);
  if( pVTab ) sqlite3VtabImportErrmsg(p, pVTab->pVtab);
  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VCreate P1 * * P4 *
**
** P4 is the name of a virtual table in database P1. Call the xCreate method
** for that table.
*/
case OP_VCreate: {














  rc = sqlite3VtabCallCreate(db, pOp->p1, pOp->p4.z, &p->zErrMsg);


  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VDestroy P1 * * P4 *
**
** P4 is the name of a virtual table in database P1.  Call the xDestroy method
** of that table.
*/
case OP_VDestroy: {
  p->inVtabMethod = 2;
  rc = sqlite3VtabCallDestroy(db, pOp->p1, pOp->p4.z);
  p->inVtabMethod = 0;
  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VOpen P1 * * P4 *
**
................................................................................
** P1 is a cursor number.  This opcode opens a cursor to the virtual
** table and stores that cursor in P1.
*/
case OP_VOpen: {
  VdbeCursor *pCur;
  sqlite3_vtab_cursor *pVtabCursor;
  sqlite3_vtab *pVtab;
  sqlite3_module *pModule;

  assert( p->bIsReader );
  pCur = 0;
  pVtabCursor = 0;
  pVtab = pOp->p4.pVtab->pVtab;




  pModule = (sqlite3_module *)pVtab->pModule;
  assert(pVtab && pModule);
  rc = pModule->xOpen(pVtab, &pVtabCursor);
  sqlite3VtabImportErrmsg(p, pVtab);
  if( SQLITE_OK==rc ){
    /* Initialize sqlite3_vtab_cursor base class */
    pVtabCursor->pVtab = pVtab;

    /* Initialize vdbe cursor object */
    pCur = allocateCursor(p, pOp->p1, 0, -1, 0);
    if( pCur ){
      pCur->pVtabCursor = pVtabCursor;

    }else{
      db->mallocFailed = 1;
      pModule->xClose(pVtabCursor);
    }
  }
  break;
}
................................................................................
  {
    res = 0;
    apArg = p->apArg;
    for(i = 0; i<nArg; i++){
      apArg[i] = &pArgc[i+1];
    }

    p->inVtabMethod = 1;
    rc = pModule->xFilter(pVtabCursor, iQuery, pOp->p4.z, nArg, apArg);
    p->inVtabMethod = 0;
    sqlite3VtabImportErrmsg(p, pVtab);
    if( rc==SQLITE_OK ){
      res = pModule->xEof(pVtabCursor);
    }
    VdbeBranchTaken(res!=0,2);
    if( res ){
      pc = pOp->p2 - 1;
................................................................................

  /* Invoke the xNext() method of the module. There is no way for the
  ** underlying implementation to return an error if one occurs during
  ** xNext(). Instead, if an error occurs, true is returned (indicating that 
  ** data is available) and the error code returned when xColumn or
  ** some other method is next invoked on the save virtual table cursor.
  */
  p->inVtabMethod = 1;
  rc = pModule->xNext(pCur->pVtabCursor);
  p->inVtabMethod = 0;
  sqlite3VtabImportErrmsg(p, pVtab);
  if( rc==SQLITE_OK ){
    res = pModule->xEof(pCur->pVtabCursor);
  }
  VdbeBranchTaken(!res,2);
  if( !res ){
    /* If there is data, jump to P2 */
................................................................................
** is set to the value of the rowid for the row just inserted.
**
** P5 is the error actions (OE_Replace, OE_Fail, OE_Ignore, etc) to
** apply in the case of a constraint failure on an insert or update.
*/
case OP_VUpdate: {
  sqlite3_vtab *pVtab;
  sqlite3_module *pModule;
  int nArg;
  int i;
  sqlite_int64 rowid;
  Mem **apArg;
  Mem *pX;

  assert( pOp->p2==1        || pOp->p5==OE_Fail   || pOp->p5==OE_Rollback 
       || pOp->p5==OE_Abort || pOp->p5==OE_Ignore || pOp->p5==OE_Replace
  );
  assert( p->readOnly==0 );
  pVtab = pOp->p4.pVtab->pVtab;




  pModule = (sqlite3_module *)pVtab->pModule;
  nArg = pOp->p2;
  assert( pOp->p4type==P4_VTAB );
  if( ALWAYS(pModule->xUpdate) ){
    u8 vtabOnConflict = db->vtabOnConflict;
    apArg = p->apArg;
    pX = &aMem[pOp->p3];
    for(i=0; i<nArg; i++){

**
** If P1 is not zero, then it is a register that a subsequent min() or
** max() aggregate will set to 1 if the current row is not the minimum or
** maximum.  The P1 register is initialized to 0 by this instruction.
**
** The interface used by the implementation of the aforementioned functions
** to retrieve the collation sequence set by this opcode is not available
** publicly.  Only built-in functions have access to this feature.
*/
case OP_CollSeq: {
  assert( pOp->p4type==P4_COLLSEQ );
  if( pOp->p1 ){
    sqlite3VdbeMemSetInt64(&aMem[pOp->p1], 0);
  }
  break;
................................................................................
** This instruction works just like OpenRead except that it opens the cursor
** in read/write mode.  For a given table, there can be one or more read-only
** cursors or a single read/write cursor but not both.
**
** See also OpenRead.
*/
case OP_ReopenIdx: {














  int nField;
  KeyInfo *pKeyInfo;
  int p2;
  int iDb;
  int wrFlag;
  Btree *pX;
  VdbeCursor *pCur;
  Db *pDb;

  assert( pOp->p5==0 || pOp->p5==OPFLAG_SEEKEQ );
  assert( pOp->p4type==P4_KEYINFO );
  pCur = p->apCsr[pOp->p1];
  if( pCur && pCur->pgnoRoot==(u32)pOp->p2 ){
    assert( pCur->iDb==pOp->p3 );      /* Guaranteed by the code generator */
    goto open_cursor_set_hints;
  }
  /* If the cursor is not currently open or is open on a different
  ** index, then fall through into OP_OpenRead to force a reopen */
case OP_OpenRead:
case OP_OpenWrite:

  assert( (pOp->p5&(OPFLAG_P2ISREG|OPFLAG_BULKCSR|OPFLAG_SEEKEQ))==pOp->p5 );
  assert( pOp->opcode==OP_OpenWrite || pOp->p5==0 || pOp->p5==OPFLAG_SEEKEQ );
  assert( p->bIsReader );
  assert( pOp->opcode==OP_OpenRead || pOp->opcode==OP_ReopenIdx
          || p->readOnly==0 );

  if( p->expired ){
    rc = SQLITE_ABORT_ROLLBACK;
    break;
................................................................................
  pCur = allocateCursor(p, pOp->p1, nField, iDb, 1);
  if( pCur==0 ) goto no_mem;
  pCur->nullRow = 1;
  pCur->isOrdered = 1;
  pCur->pgnoRoot = p2;
  rc = sqlite3BtreeCursor(pX, p2, wrFlag, pKeyInfo, pCur->pCursor);
  pCur->pKeyInfo = pKeyInfo;



  /* Set the VdbeCursor.isTable variable. Previous versions of
  ** SQLite used to check if the root-page flags were sane at this point
  ** and report database corruption if they were not, but this check has
  ** since moved into the btree layer.  */  
  pCur->isTable = pOp->p4type!=P4_KEYINFO;

open_cursor_set_hints:
  assert( OPFLAG_BULKCSR==BTREE_BULKLOAD );
  assert( OPFLAG_SEEKEQ==BTREE_SEEK_EQ );
  sqlite3BtreeCursorHints(pCur->pCursor,
                          (pOp->p5 & (OPFLAG_BULKCSR|OPFLAG_SEEKEQ)));
  break;
}

/* Opcode: OpenEphemeral P1 P2 * P4 P5
** Synopsis: nColumn=P2
**
** Open a new cursor P1 to a transient table.
................................................................................
  assert( pC->isOrdered );
  assert( pC->pCursor!=0 );
  oc = pOp->opcode;
  pC->nullRow = 0;
#ifdef SQLITE_DEBUG
  pC->seekOp = pOp->opcode;
#endif

  /* For a cursor with the BTREE_SEEK_EQ hint, only the OP_SeekGE and
  ** OP_SeekLE opcodes are allowed, and these must be immediately followed
  ** by an OP_IdxGT or OP_IdxLT opcode, respectively, with the same key.
  */
#ifdef SQLITE_DEBUG
  if( sqlite3BtreeCursorHasHint(pC->pCursor, BTREE_SEEK_EQ) ){
    assert( pOp->opcode==OP_SeekGE || pOp->opcode==OP_SeekLE );
    assert( pOp[1].opcode==OP_IdxLT || pOp[1].opcode==OP_IdxGT );
    assert( pOp[1].p1==pOp[0].p1 );
    assert( pOp[1].p2==pOp[0].p2 );
    assert( pOp[1].p3==pOp[0].p3 );
    assert( pOp[1].p4.i==pOp[0].p4.i );
  }
#endif
 
  if( pC->isTable ){
    /* The input value in P3 might be of any type: integer, real, string,
    ** blob, or NULL.  But it needs to be an integer before we can do
    ** the seek, so convert it. */
    pIn3 = &aMem[pOp->p3];
    if( (pIn3->flags & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){
      applyNumericAffinity(pIn3, 0);
................................................................................
** the last one in the database) then a zero is stored in register P2.
** If AUTOVACUUM is disabled then a zero is stored in register P2.
**
** See also: Clear
*/
case OP_Destroy: {     /* out2-prerelease */
  int iMoved;


  int iDb;

  assert( p->readOnly==0 );












  pOut->flags = MEM_Null;

  if( db->nVdbeRead > db->nVDestroy+1 ){
    rc = SQLITE_LOCKED;
    p->errorAction = OE_Abort;
  }else{
    iDb = pOp->p3;

    assert( DbMaskTest(p->btreeMask, iDb) );
    iMoved = 0;  /* Not needed.  Only to silence a warning. */
    rc = sqlite3BtreeDropTable(db->aDb[iDb].pBt, pOp->p1, &iMoved);
    pOut->flags = MEM_Int;
    pOut->u.i = iMoved;
#ifndef SQLITE_OMIT_AUTOVACUUM
    if( rc==SQLITE_OK && iMoved!=0 ){
................................................................................
  rc = sqlite3VtabBegin(db, pVTab);
  if( pVTab ) sqlite3VtabImportErrmsg(p, pVTab->pVtab);
  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VCreate P1 P2 * * *
**
** P2 is a register that holds the name of a virtual table in database 
** P1. Call the xCreate method for that table.
*/
case OP_VCreate: {
  Mem sMem;          /* For storing the record being decoded */
  const char *zTab;  /* Name of the virtual table */

  memset(&sMem, 0, sizeof(sMem));
  sMem.db = db;
  /* Because P2 is always a static string, it is impossible for the
  ** sqlite3VdbeMemCopy() to fail */
  assert( (aMem[pOp->p2].flags & MEM_Str)!=0 );
  assert( (aMem[pOp->p2].flags & MEM_Static)!=0 );
  rc = sqlite3VdbeMemCopy(&sMem, &aMem[pOp->p2]);
  assert( rc==SQLITE_OK );
  zTab = (const char*)sqlite3_value_text(&sMem);
  assert( zTab || db->mallocFailed );
  if( zTab ){
    rc = sqlite3VtabCallCreate(db, pOp->p1, zTab, &p->zErrMsg);
  }
  sqlite3VdbeMemRelease(&sMem);
  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VDestroy P1 * * P4 *
**
** P4 is the name of a virtual table in database P1.  Call the xDestroy method
** of that table.
*/
case OP_VDestroy: {
  db->nVDestroy++;
  rc = sqlite3VtabCallDestroy(db, pOp->p1, pOp->p4.z);
  db->nVDestroy--;
  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VOpen P1 * * P4 *
**
................................................................................
** P1 is a cursor number.  This opcode opens a cursor to the virtual
** table and stores that cursor in P1.
*/
case OP_VOpen: {
  VdbeCursor *pCur;
  sqlite3_vtab_cursor *pVtabCursor;
  sqlite3_vtab *pVtab;
  const sqlite3_module *pModule;

  assert( p->bIsReader );
  pCur = 0;
  pVtabCursor = 0;
  pVtab = pOp->p4.pVtab->pVtab;
  if( pVtab==0 || NEVER(pVtab->pModule==0) ){
    rc = SQLITE_LOCKED;
    break;
  }
  pModule = pVtab->pModule;

  rc = pModule->xOpen(pVtab, &pVtabCursor);
  sqlite3VtabImportErrmsg(p, pVtab);
  if( SQLITE_OK==rc ){
    /* Initialize sqlite3_vtab_cursor base class */
    pVtabCursor->pVtab = pVtab;

    /* Initialize vdbe cursor object */
    pCur = allocateCursor(p, pOp->p1, 0, -1, 0);
    if( pCur ){
      pCur->pVtabCursor = pVtabCursor;
      pVtab->nRef++;
    }else{
      db->mallocFailed = 1;
      pModule->xClose(pVtabCursor);
    }
  }
  break;
}
................................................................................
  {
    res = 0;
    apArg = p->apArg;
    for(i = 0; i<nArg; i++){
      apArg[i] = &pArgc[i+1];
    }


    rc = pModule->xFilter(pVtabCursor, iQuery, pOp->p4.z, nArg, apArg);

    sqlite3VtabImportErrmsg(p, pVtab);
    if( rc==SQLITE_OK ){
      res = pModule->xEof(pVtabCursor);
    }
    VdbeBranchTaken(res!=0,2);
    if( res ){
      pc = pOp->p2 - 1;
................................................................................

  /* Invoke the xNext() method of the module. There is no way for the
  ** underlying implementation to return an error if one occurs during
  ** xNext(). Instead, if an error occurs, true is returned (indicating that 
  ** data is available) and the error code returned when xColumn or
  ** some other method is next invoked on the save virtual table cursor.
  */

  rc = pModule->xNext(pCur->pVtabCursor);

  sqlite3VtabImportErrmsg(p, pVtab);
  if( rc==SQLITE_OK ){
    res = pModule->xEof(pCur->pVtabCursor);
  }
  VdbeBranchTaken(!res,2);
  if( !res ){
    /* If there is data, jump to P2 */
................................................................................
** is set to the value of the rowid for the row just inserted.
**
** P5 is the error actions (OE_Replace, OE_Fail, OE_Ignore, etc) to
** apply in the case of a constraint failure on an insert or update.
*/
case OP_VUpdate: {
  sqlite3_vtab *pVtab;
  const sqlite3_module *pModule;
  int nArg;
  int i;
  sqlite_int64 rowid;
  Mem **apArg;
  Mem *pX;

  assert( pOp->p2==1        || pOp->p5==OE_Fail   || pOp->p5==OE_Rollback 
       || pOp->p5==OE_Abort || pOp->p5==OE_Ignore || pOp->p5==OE_Replace
  );
  assert( p->readOnly==0 );
  pVtab = pOp->p4.pVtab->pVtab;
  if( pVtab==0 || NEVER(pVtab->pModule==0) ){
    rc = SQLITE_LOCKED;
    break;
  }
  pModule = pVtab->pModule;
  nArg = pOp->p2;
  assert( pOp->p4type==P4_VTAB );
  if( ALWAYS(pModule->xUpdate) ){
    u8 vtabOnConflict = db->vtabOnConflict;
    apArg = p->apArg;
    pX = &aMem[pOp->p3];
    for(i=0; i<nArg; i++){

/*
** An instance of the virtual machine.  This structure contains the complete
** state of the virtual machine.
**
** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare()
** is really a pointer to an instance of this structure.
**
** The Vdbe.inVtabMethod variable is set to non-zero for the duration of
** any virtual table method invocations made by the vdbe program. It is
** set to 2 for xDestroy method calls and 1 for all other methods. This
** variable is used for two purposes: to allow xDestroy methods to execute
** "DROP TABLE" statements and to prevent some nasty side effects of
** malloc failure when SQLite is invoked recursively by a virtual table 
** method function.
*/
struct Vdbe {
  sqlite3 *db;            /* The database connection that owns this statement */
  Op *aOp;                /* Space to hold the virtual machine's program */
  Mem *aMem;              /* The memory locations */
  Mem **apArg;            /* Arguments to currently executing user function */
  Mem *aColName;          /* Column names to return */
................................................................................
#ifdef SQLITE_DEBUG
  int rcApp;              /* errcode set by sqlite3_result_error_code() */
#endif
  u16 nResColumn;         /* Number of columns in one row of the result set */
  u8 errorAction;         /* Recovery action to do in case of an error */
  u8 minWriteFileFormat;  /* Minimum file format for writable database files */
  bft explain:2;          /* True if EXPLAIN present on SQL command */
  bft inVtabMethod:2;     /* See comments above */
  bft changeCntOn:1;      /* True to update the change-counter */
  bft expired:1;          /* True if the VM needs to be recompiled */
  bft runOnlyOnce:1;      /* Automatically expire on reset */
  bft usesStmtJournal:1;  /* True if uses a statement journal */
  bft readOnly:1;         /* True for statements that do not write */
  bft bIsReader:1;        /* True for statements that read */
  bft isPrepareV2:1;      /* True if prepared with prepare_v2() */

/*
** An instance of the virtual machine.  This structure contains the complete
** state of the virtual machine.
**
** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare()
** is really a pointer to an instance of this structure.








*/
struct Vdbe {
  sqlite3 *db;            /* The database connection that owns this statement */
  Op *aOp;                /* Space to hold the virtual machine's program */
  Mem *aMem;              /* The memory locations */
  Mem **apArg;            /* Arguments to currently executing user function */
  Mem *aColName;          /* Column names to return */
................................................................................
#ifdef SQLITE_DEBUG
  int rcApp;              /* errcode set by sqlite3_result_error_code() */
#endif
  u16 nResColumn;         /* Number of columns in one row of the result set */
  u8 errorAction;         /* Recovery action to do in case of an error */
  u8 minWriteFileFormat;  /* Minimum file format for writable database files */
  bft explain:2;          /* True if EXPLAIN present on SQL command */

  bft changeCntOn:1;      /* True to update the change-counter */
  bft expired:1;          /* True if the VM needs to be recompiled */
  bft runOnlyOnce:1;      /* Automatically expire on reset */
  bft usesStmtJournal:1;  /* True if uses a statement journal */
  bft readOnly:1;         /* True for statements that do not write */
  bft bIsReader:1;        /* True for statements that read */
  bft isPrepareV2:1;      /* True if prepared with prepare_v2() */

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  sqlite3VdbeMemSetZeroBlob(pCtx->pOut, n);
}
void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
  pCtx->isError = errCode;
  pCtx->fErrorOrAux = 1;
#ifdef SQLITE_DEBUG
  pCtx->pVdbe->rcApp = errCode;
#endif
  if( pCtx->pOut->flags & MEM_Null ){
    sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1, 
                         SQLITE_UTF8, SQLITE_STATIC);
  }
}

................................................................................
*/
sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){
  assert( p && p->pFunc );
  return p->pOut->db;
}

/*
** Return the current time for a statement




*/
sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){
  Vdbe *v = p->pVdbe;
  int rc;







  if( v->iCurrentTime==0 ){
    rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, &v->iCurrentTime);
    if( rc ) v->iCurrentTime = 0;

  }
  return v->iCurrentTime;
}

/*
** The following is the implementation of an SQL function that always
** fails with an error message stating that the function is used in the
** wrong context.  The sqlite3_overload_function() API might construct
** SQL function that use this routine so that the functions will exist
................................................................................
** Return the auxiliary data pointer, if any, for the iArg'th argument to
** the user-function defined by pCtx.
*/
void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){
  AuxData *pAuxData;

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );





  for(pAuxData=pCtx->pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){
    if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break;
  }

  return (pAuxData ? pAuxData->pAux : 0);
}

................................................................................
  void (*xDelete)(void*)
){
  AuxData *pAuxData;
  Vdbe *pVdbe = pCtx->pVdbe;

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  if( iArg<0 ) goto failed;






  for(pAuxData=pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){
    if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break;
  }
  if( pAuxData==0 ){
    pAuxData = sqlite3DbMallocZero(pVdbe->db, sizeof(AuxData));
    if( !pAuxData ) goto failed;

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  sqlite3VdbeMemSetZeroBlob(pCtx->pOut, n);
}
void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
  pCtx->isError = errCode;
  pCtx->fErrorOrAux = 1;
#ifdef SQLITE_DEBUG
  if( pCtx->pVdbe ) pCtx->pVdbe->rcApp = errCode;
#endif
  if( pCtx->pOut->flags & MEM_Null ){
    sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1, 
                         SQLITE_UTF8, SQLITE_STATIC);
  }
}

................................................................................
*/
sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){
  assert( p && p->pFunc );
  return p->pOut->db;
}

/*
** Return the current time for a statement.  If the current time
** is requested more than once within the same run of a single prepared
** statement, the exact same time is returned for each invocation regardless
** of the amount of time that elapses between invocations.  In other words,
** the time returned is always the time of the first call.
*/
sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){

  int rc;
#ifndef SQLITE_ENABLE_STAT3_OR_STAT4
  sqlite3_int64 *piTime = &p->pVdbe->iCurrentTime;
  assert( p->pVdbe!=0 );
#else
  sqlite3_int64 iTime = 0;
  sqlite3_int64 *piTime = p->pVdbe!=0 ? &p->pVdbe->iCurrentTime : &iTime;
#endif
  if( *piTime==0 ){
    rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, piTime);

    if( rc ) *piTime = 0;
  }
  return *piTime;
}

/*
** The following is the implementation of an SQL function that always
** fails with an error message stating that the function is used in the
** wrong context.  The sqlite3_overload_function() API might construct
** SQL function that use this routine so that the functions will exist
................................................................................
** Return the auxiliary data pointer, if any, for the iArg'th argument to
** the user-function defined by pCtx.
*/
void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){
  AuxData *pAuxData;

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
#if SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx->pVdbe==0 ) return 0;
#else
  assert( pCtx->pVdbe!=0 );
#endif
  for(pAuxData=pCtx->pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){
    if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break;
  }

  return (pAuxData ? pAuxData->pAux : 0);
}

................................................................................
  void (*xDelete)(void*)
){
  AuxData *pAuxData;
  Vdbe *pVdbe = pCtx->pVdbe;

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  if( iArg<0 ) goto failed;
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pVdbe==0 ) goto failed;
#else
  assert( pVdbe!=0 );
#endif

  for(pAuxData=pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){
    if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break;
  }
  if( pAuxData==0 ){
    pAuxData = sqlite3DbMallocZero(pVdbe->db, sizeof(AuxData));
    if( !pAuxData ) goto failed;

        zP4 = "(blob)";
      }
      break;
    }
#ifndef SQLITE_OMIT_VIRTUALTABLE
    case P4_VTAB: {
      sqlite3_vtab *pVtab = pOp->p4.pVtab->pVtab;
      sqlite3_snprintf(nTemp, zTemp, "vtab:%p:%p", pVtab, pVtab->pModule);
      break;
    }
#endif
    case P4_INTARRAY: {
      sqlite3_snprintf(nTemp, zTemp, "intarray");
      break;
    }
................................................................................
  }else if( pCx->pCursor ){
    sqlite3BtreeCloseCursor(pCx->pCursor);
  }
#ifndef SQLITE_OMIT_VIRTUALTABLE
  else if( pCx->pVtabCursor ){
    sqlite3_vtab_cursor *pVtabCursor = pCx->pVtabCursor;
    const sqlite3_module *pModule = pVtabCursor->pVtab->pModule;
    p->inVtabMethod = 1;

    pModule->xClose(pVtabCursor);
    p->inVtabMethod = 0;
  }
#endif
}

/*
** Copy the values stored in the VdbeFrame structure to its Vdbe. This
** is used, for example, when a trigger sub-program is halted to restore
................................................................................
      return rc;
    }

    /* Delete the master journal file. This commits the transaction. After
    ** doing this the directory is synced again before any individual
    ** transaction files are deleted.
    */
    rc = sqlite3OsDelete(pVfs, zMaster, 1);
    sqlite3DbFree(db, zMaster);
    zMaster = 0;
    if( rc ){
      return rc;
    }

    /* All files and directories have already been synced, so the following

        zP4 = "(blob)";
      }
      break;
    }
#ifndef SQLITE_OMIT_VIRTUALTABLE
    case P4_VTAB: {
      sqlite3_vtab *pVtab = pOp->p4.pVtab->pVtab;
      sqlite3_snprintf(nTemp, zTemp, "vtab:%p", pVtab);
      break;
    }
#endif
    case P4_INTARRAY: {
      sqlite3_snprintf(nTemp, zTemp, "intarray");
      break;
    }
................................................................................
  }else if( pCx->pCursor ){
    sqlite3BtreeCloseCursor(pCx->pCursor);
  }
#ifndef SQLITE_OMIT_VIRTUALTABLE
  else if( pCx->pVtabCursor ){
    sqlite3_vtab_cursor *pVtabCursor = pCx->pVtabCursor;
    const sqlite3_module *pModule = pVtabCursor->pVtab->pModule;
    assert( pVtabCursor->pVtab->nRef>0 );
    pVtabCursor->pVtab->nRef--;
    pModule->xClose(pVtabCursor);

  }
#endif
}

/*
** Copy the values stored in the VdbeFrame structure to its Vdbe. This
** is used, for example, when a trigger sub-program is halted to restore
................................................................................
      return rc;
    }

    /* Delete the master journal file. This commits the transaction. After
    ** doing this the directory is synced again before any individual
    ** transaction files are deleted.
    */
    rc = sqlite3OsDelete(pVfs, zMaster, needSync);
    sqlite3DbFree(db, zMaster);
    zMaster = 0;
    if( rc ){
      return rc;
    }

    /* All files and directories have already been synced, so the following

** Allocate and return a pointer to a new sqlite3_value object. If
** the second argument to this function is NULL, the object is allocated
** by calling sqlite3ValueNew().
**
** Otherwise, if the second argument is non-zero, then this function is 
** being called indirectly by sqlite3Stat4ProbeSetValue(). If it has not
** already been allocated, allocate the UnpackedRecord structure that 
** that function will return to its caller here. Then return a pointer 
** an sqlite3_value within the UnpackedRecord.a[] array.
*/
static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( p ){
    UnpackedRecord *pRec = p->ppRec[0];

................................................................................
  }
#else
  UNUSED_PARAMETER(p);
#endif /* defined(SQLITE_ENABLE_STAT3_OR_STAT4) */
  return sqlite3ValueNew(db);
}












































































































/*
** Extract a value from the supplied expression in the manner described
** above sqlite3ValueFromExpr(). Allocate the sqlite3_value object
** using valueNew().
**
** If pCtx is NULL and an error occurs after the sqlite3_value object
** has been allocated, it is freed before returning. Or, if pCtx is not
................................................................................

  if( !pExpr ){
    *ppVal = 0;
    return SQLITE_OK;
  }
  while( (op = pExpr->op)==TK_UPLUS ) pExpr = pExpr->pLeft;
  if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;







  if( op==TK_CAST ){
    u8 aff = sqlite3AffinityType(pExpr->u.zToken,0);
    rc = valueFromExpr(db, pExpr->pLeft, enc, aff, ppVal, pCtx);
    testcase( rc!=SQLITE_OK );
    if( *ppVal ){
      sqlite3VdbeMemCast(*ppVal, aff, SQLITE_UTF8);
................................................................................
    zVal = &pExpr->u.zToken[2];
    nVal = sqlite3Strlen30(zVal)-1;
    assert( zVal[nVal]=='\'' );
    sqlite3VdbeMemSetStr(pVal, sqlite3HexToBlob(db, zVal, nVal), nVal/2,
                         0, SQLITE_DYNAMIC);
  }
#endif







  *ppVal = pVal;
  return rc;

no_mem:
  db->mallocFailed = 1;
  sqlite3DbFree(db, zVal);

** Allocate and return a pointer to a new sqlite3_value object. If
** the second argument to this function is NULL, the object is allocated
** by calling sqlite3ValueNew().
**
** Otherwise, if the second argument is non-zero, then this function is 
** being called indirectly by sqlite3Stat4ProbeSetValue(). If it has not
** already been allocated, allocate the UnpackedRecord structure that 
** that function will return to its caller here. Then return a pointer to
** an sqlite3_value within the UnpackedRecord.a[] array.
*/
static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( p ){
    UnpackedRecord *pRec = p->ppRec[0];

................................................................................
  }
#else
  UNUSED_PARAMETER(p);
#endif /* defined(SQLITE_ENABLE_STAT3_OR_STAT4) */
  return sqlite3ValueNew(db);
}

/*
** The expression object indicated by the second argument is guaranteed
** to be a scalar SQL function. If
**
**   * all function arguments are SQL literals,
**   * the SQLITE_FUNC_CONSTANT function flag is set, and
**   * the SQLITE_FUNC_NEEDCOLL function flag is not set,
**
** then this routine attempts to invoke the SQL function. Assuming no
** error occurs, output parameter (*ppVal) is set to point to a value 
** object containing the result before returning SQLITE_OK.
**
** Affinity aff is applied to the result of the function before returning.
** If the result is a text value, the sqlite3_value object uses encoding 
** enc.
**
** If the conditions above are not met, this function returns SQLITE_OK
** and sets (*ppVal) to NULL. Or, if an error occurs, (*ppVal) is set to
** NULL and an SQLite error code returned.
*/
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
static int valueFromFunction(
  sqlite3 *db,                    /* The database connection */
  Expr *p,                        /* The expression to evaluate */
  u8 enc,                         /* Encoding to use */
  u8 aff,                         /* Affinity to use */
  sqlite3_value **ppVal,          /* Write the new value here */
  struct ValueNewStat4Ctx *pCtx   /* Second argument for valueNew() */
){
  sqlite3_context ctx;            /* Context object for function invocation */
  sqlite3_value **apVal = 0;      /* Function arguments */
  int nVal = 0;                   /* Size of apVal[] array */
  FuncDef *pFunc = 0;             /* Function definition */
  sqlite3_value *pVal = 0;        /* New value */
  int rc = SQLITE_OK;             /* Return code */
  int nName;                      /* Size of function name in bytes */
  ExprList *pList = 0;            /* Function arguments */
  int i;                          /* Iterator variable */

  assert( pCtx!=0 );
  assert( (p->flags & EP_TokenOnly)==0 );
  pList = p->x.pList;
  if( pList ) nVal = pList->nExpr;
  nName = sqlite3Strlen30(p->u.zToken);
  pFunc = sqlite3FindFunction(db, p->u.zToken, nName, nVal, enc, 0);
  assert( pFunc );
  if( (pFunc->funcFlags & SQLITE_FUNC_CONSTANT)==0 
   || (pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL)
  ){
    return SQLITE_OK;
  }

  if( pList ){
    apVal = (sqlite3_value**)sqlite3DbMallocZero(db, sizeof(apVal[0]) * nVal);
    if( apVal==0 ){
      rc = SQLITE_NOMEM;
      goto value_from_function_out;
    }
    for(i=0; i<nVal; i++){
      rc = sqlite3ValueFromExpr(db, pList->a[i].pExpr, enc, aff, &apVal[i]);
      if( apVal[i]==0 || rc!=SQLITE_OK ) goto value_from_function_out;
    }
  }

  pVal = valueNew(db, pCtx);
  if( pVal==0 ){
    rc = SQLITE_NOMEM;
    goto value_from_function_out;
  }

  assert( pCtx->pParse->rc==SQLITE_OK );
  memset(&ctx, 0, sizeof(ctx));
  ctx.pOut = pVal;
  ctx.pFunc = pFunc;
  pFunc->xFunc(&ctx, nVal, apVal);
  if( ctx.isError ){
    rc = ctx.isError;
    sqlite3ErrorMsg(pCtx->pParse, "%s", sqlite3_value_text(pVal));
  }else{
    sqlite3ValueApplyAffinity(pVal, aff, SQLITE_UTF8);
    assert( rc==SQLITE_OK );
    rc = sqlite3VdbeChangeEncoding(pVal, enc);
    if( rc==SQLITE_OK && sqlite3VdbeMemTooBig(pVal) ){
      rc = SQLITE_TOOBIG;
      pCtx->pParse->nErr++;
    }
  }
  pCtx->pParse->rc = rc;

 value_from_function_out:
  if( rc!=SQLITE_OK ){
    pVal = 0;
  }
  if( apVal ){
    for(i=0; i<nVal; i++){
      sqlite3ValueFree(apVal[i]);
    }
    sqlite3DbFree(db, apVal);
  }

  *ppVal = pVal;
  return rc;
}
#else
# define valueFromFunction(a,b,c,d,e,f) SQLITE_OK
#endif /* defined(SQLITE_ENABLE_STAT3_OR_STAT4) */

/*
** Extract a value from the supplied expression in the manner described
** above sqlite3ValueFromExpr(). Allocate the sqlite3_value object
** using valueNew().
**
** If pCtx is NULL and an error occurs after the sqlite3_value object
** has been allocated, it is freed before returning. Or, if pCtx is not
................................................................................

  if( !pExpr ){
    *ppVal = 0;
    return SQLITE_OK;
  }
  while( (op = pExpr->op)==TK_UPLUS ) pExpr = pExpr->pLeft;
  if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;

  /* Compressed expressions only appear when parsing the DEFAULT clause
  ** on a table column definition, and hence only when pCtx==0.  This
  ** check ensures that an EP_TokenOnly expression is never passed down
  ** into valueFromFunction(). */
  assert( (pExpr->flags & EP_TokenOnly)==0 || pCtx==0 );

  if( op==TK_CAST ){
    u8 aff = sqlite3AffinityType(pExpr->u.zToken,0);
    rc = valueFromExpr(db, pExpr->pLeft, enc, aff, ppVal, pCtx);
    testcase( rc!=SQLITE_OK );
    if( *ppVal ){
      sqlite3VdbeMemCast(*ppVal, aff, SQLITE_UTF8);
................................................................................
    zVal = &pExpr->u.zToken[2];
    nVal = sqlite3Strlen30(zVal)-1;
    assert( zVal[nVal]=='\'' );
    sqlite3VdbeMemSetStr(pVal, sqlite3HexToBlob(db, zVal, nVal), nVal/2,
                         0, SQLITE_DYNAMIC);
  }
#endif

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  else if( op==TK_FUNCTION && pCtx!=0 ){
    rc = valueFromFunction(db, pExpr, enc, affinity, &pVal, pCtx);
  }
#endif

  *ppVal = pVal;
  return rc;

no_mem:
  db->mallocFailed = 1;
  sqlite3DbFree(db, zVal);

*/
static int vdbeSorterOpenTempFile(
  sqlite3 *db,                    /* Database handle doing sort */
  i64 nExtend,                    /* Attempt to extend file to this size */
  sqlite3_file **ppFd
){
  int rc;

  rc = sqlite3OsOpenMalloc(db->pVfs, 0, ppFd,
      SQLITE_OPEN_TEMP_JOURNAL |
      SQLITE_OPEN_READWRITE    | SQLITE_OPEN_CREATE |
      SQLITE_OPEN_EXCLUSIVE    | SQLITE_OPEN_DELETEONCLOSE, &rc
  );
  if( rc==SQLITE_OK ){
    i64 max = SQLITE_MAX_MMAP_SIZE;

*/
static int vdbeSorterOpenTempFile(
  sqlite3 *db,                    /* Database handle doing sort */
  i64 nExtend,                    /* Attempt to extend file to this size */
  sqlite3_file **ppFd
){
  int rc;
  if( sqlite3FaultSim(202) ) return SQLITE_IOERR_ACCESS;
  rc = sqlite3OsOpenMalloc(db->pVfs, 0, ppFd,
      SQLITE_OPEN_TEMP_JOURNAL |
      SQLITE_OPEN_READWRITE    | SQLITE_OPEN_CREATE |
      SQLITE_OPEN_EXCLUSIVE    | SQLITE_OPEN_DELETEONCLOSE, &rc
  );
  if( rc==SQLITE_OK ){
    i64 max = SQLITE_MAX_MMAP_SIZE;

  ** do additional initialization work and store the statement text
  ** in the sqlite_master table.
  */
  if( !db->init.busy ){
    char *zStmt;
    char *zWhere;
    int iDb;

    Vdbe *v;

    /* Compute the complete text of the CREATE VIRTUAL TABLE statement */
    if( pEnd ){
      pParse->sNameToken.n = (int)(pEnd->z - pParse->sNameToken.z) + pEnd->n;
    }
    zStmt = sqlite3MPrintf(db, "CREATE VIRTUAL TABLE %T", &pParse->sNameToken);
................................................................................
    sqlite3DbFree(db, zStmt);
    v = sqlite3GetVdbe(pParse);
    sqlite3ChangeCookie(pParse, iDb);

    sqlite3VdbeAddOp2(v, OP_Expire, 0, 0);
    zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName);
    sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere);



    sqlite3VdbeAddOp4(v, OP_VCreate, iDb, 0, 0, 
                         pTab->zName, sqlite3Strlen30(pTab->zName) + 1);
  }

  /* If we are rereading the sqlite_master table create the in-memory
  ** record of the table. The xConnect() method is not called until
  ** the first time the virtual table is used in an SQL statement. This
  ** allows a schema that contains virtual tables to be loaded before
  ** the required virtual table implementations are registered.  */
................................................................................
*/
int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab){
  int rc = SQLITE_OK;
  Table *pTab;

  pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName);
  if( ALWAYS(pTab!=0 && pTab->pVTable!=0) ){
    VTable *p = vtabDisconnectAll(db, pTab);





    assert( rc==SQLITE_OK );
    rc = p->pMod->pModule->xDestroy(p->pVtab);



    /* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */
    if( rc==SQLITE_OK ){
      assert( pTab->pVTable==p && p->pNext==0 );
      p->pVtab = 0;
      pTab->pVTable = 0;
      sqlite3VtabUnlock(p);
    }

  ** do additional initialization work and store the statement text
  ** in the sqlite_master table.
  */
  if( !db->init.busy ){
    char *zStmt;
    char *zWhere;
    int iDb;
    int iReg;
    Vdbe *v;

    /* Compute the complete text of the CREATE VIRTUAL TABLE statement */
    if( pEnd ){
      pParse->sNameToken.n = (int)(pEnd->z - pParse->sNameToken.z) + pEnd->n;
    }
    zStmt = sqlite3MPrintf(db, "CREATE VIRTUAL TABLE %T", &pParse->sNameToken);
................................................................................
    sqlite3DbFree(db, zStmt);
    v = sqlite3GetVdbe(pParse);
    sqlite3ChangeCookie(pParse, iDb);

    sqlite3VdbeAddOp2(v, OP_Expire, 0, 0);
    zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName);
    sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere);

    iReg = ++pParse->nMem;
    sqlite3VdbeAddOp4(v, OP_String8, 0, iReg, 0, pTab->zName, 0);
    sqlite3VdbeAddOp2(v, OP_VCreate, iDb, iReg);

  }

  /* If we are rereading the sqlite_master table create the in-memory
  ** record of the table. The xConnect() method is not called until
  ** the first time the virtual table is used in an SQL statement. This
  ** allows a schema that contains virtual tables to be loaded before
  ** the required virtual table implementations are registered.  */
................................................................................
*/
int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab){
  int rc = SQLITE_OK;
  Table *pTab;

  pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName);
  if( ALWAYS(pTab!=0 && pTab->pVTable!=0) ){
    VTable *p;
    for(p=pTab->pVTable; p; p=p->pNext){
      assert( p->pVtab );
      if( p->pVtab->nRef>0 ){
        return SQLITE_LOCKED;
      }


    }
    p = vtabDisconnectAll(db, pTab);
    rc = p->pMod->pModule->xDestroy(p->pVtab);
    /* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */
    if( rc==SQLITE_OK ){
      assert( pTab->pVTable==p && p->pNext==0 );
      p->pVtab = 0;
      pTab->pVTable = 0;
      sqlite3VtabUnlock(p);
    }

}
static void walUnlockShared(Wal *pWal, int lockIdx){
  if( pWal->exclusiveMode ) return;
  (void)sqlite3OsShmLock(pWal->pDbFd, lockIdx, 1,
                         SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED);
  WALTRACE(("WAL%p: release SHARED-%s\n", pWal, walLockName(lockIdx)));
}
static int walLockExclusive(Wal *pWal, int lockIdx, int n){
  int rc;
  if( pWal->exclusiveMode ) return SQLITE_OK;

  rc = sqlite3OsShmLock(pWal->pDbFd, lockIdx, n,
                        SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE);
  WALTRACE(("WAL%p: acquire EXCLUSIVE-%s cnt=%d %s\n", pWal,
            walLockName(lockIdx), n, rc ? "failed" : "ok"));
  VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
  return rc;
}
................................................................................
  */
  assert( pWal->ckptLock==1 || pWal->ckptLock==0 );
  assert( WAL_ALL_BUT_WRITE==WAL_WRITE_LOCK+1 );
  assert( WAL_CKPT_LOCK==WAL_ALL_BUT_WRITE );
  assert( pWal->writeLock );
  iLock = WAL_ALL_BUT_WRITE + pWal->ckptLock;
  nLock = SQLITE_SHM_NLOCK - iLock;
  rc = walLockExclusive(pWal, iLock, nLock);
  if( rc ){
    return rc;
  }
  WALTRACE(("WAL%p: recovery begin...\n", pWal));

  memset(&pWal->hdr, 0, sizeof(WalIndexHdr));

................................................................................
  int (*xBusy)(void*),            /* Function to call when busy */
  void *pBusyArg,                 /* Context argument for xBusyHandler */
  int lockIdx,                    /* Offset of first byte to lock */
  int n                           /* Number of bytes to lock */
){
  int rc;
  do {
    rc = walLockExclusive(pWal, lockIdx, n);
  }while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) );
  return rc;
}

/*
** The cache of the wal-index header must be valid to call this function.
** Return the page-size in bytes used by the database.
................................................................................
  assert( badHdr==0 || pWal->writeLock==0 );
  if( badHdr ){
    if( pWal->readOnly & WAL_SHM_RDONLY ){
      if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){
        walUnlockShared(pWal, WAL_WRITE_LOCK);
        rc = SQLITE_READONLY_RECOVERY;
      }
    }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
      pWal->writeLock = 1;
      if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
        badHdr = walIndexTryHdr(pWal, pChanged);
        if( badHdr ){
          /* If the wal-index header is still malformed even while holding
          ** a WRITE lock, it can only mean that the header is corrupted and
          ** needs to be reconstructed.  So run recovery to do exactly that.
................................................................................
  }
  /* There was once an "if" here. The extra "{" is to preserve indentation. */
  {
    if( (pWal->readOnly & WAL_SHM_RDONLY)==0
     && (mxReadMark<pWal->hdr.mxFrame || mxI==0)
    ){
      for(i=1; i<WAL_NREADER; i++){
        rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1);
        if( rc==SQLITE_OK ){
          mxReadMark = pInfo->aReadMark[i] = pWal->hdr.mxFrame;
          mxI = i;
          walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
          break;
        }else if( rc!=SQLITE_BUSY ){
          return rc;
................................................................................
  if( pWal->readOnly ){
    return SQLITE_READONLY;
  }

  /* Only one writer allowed at a time.  Get the write lock.  Return
  ** SQLITE_BUSY if unable.
  */
  rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
  if( rc ){
    return rc;
  }
  pWal->writeLock = 1;

  /* If another connection has written to the database file since the
  ** time the read transaction on this connection was started, then
................................................................................

  if( pWal->readLock==0 ){
    volatile WalCkptInfo *pInfo = walCkptInfo(pWal);
    assert( pInfo->nBackfill==pWal->hdr.mxFrame );
    if( pInfo->nBackfill>0 ){
      u32 salt1;
      sqlite3_randomness(4, &salt1);
      rc = walLockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
      if( rc==SQLITE_OK ){
        /* If all readers are using WAL_READ_LOCK(0) (in other words if no
        ** readers are currently using the WAL), then the transactions
        ** frames will overwrite the start of the existing log. Update the
        ** wal-index header to reflect this.
        **
        ** In theory it would be Ok to update the cache of the header only
................................................................................
  assert( eMode!=SQLITE_CHECKPOINT_PASSIVE || xBusy==0 );

  if( pWal->readOnly ) return SQLITE_READONLY;
  WALTRACE(("WAL%p: checkpoint begins\n", pWal));

  /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive 
  ** "checkpoint" lock on the database file. */
  rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1);
  if( rc ){
    /* EVIDENCE-OF: R-10421-19736 If any other process is running a
    ** checkpoint operation at the same time, the lock cannot be obtained and
    ** SQLITE_BUSY is returned.
    ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured,
    ** it will not be invoked in this case.
    */

}
static void walUnlockShared(Wal *pWal, int lockIdx){
  if( pWal->exclusiveMode ) return;
  (void)sqlite3OsShmLock(pWal->pDbFd, lockIdx, 1,
                         SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED);
  WALTRACE(("WAL%p: release SHARED-%s\n", pWal, walLockName(lockIdx)));
}
static int walLockExclusive(Wal *pWal, int lockIdx, int n, int fBlock){
  int rc;
  if( pWal->exclusiveMode ) return SQLITE_OK;
  if( fBlock ) sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_WAL_BLOCK, 0);
  rc = sqlite3OsShmLock(pWal->pDbFd, lockIdx, n,
                        SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE);
  WALTRACE(("WAL%p: acquire EXCLUSIVE-%s cnt=%d %s\n", pWal,
            walLockName(lockIdx), n, rc ? "failed" : "ok"));
  VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
  return rc;
}
................................................................................
  */
  assert( pWal->ckptLock==1 || pWal->ckptLock==0 );
  assert( WAL_ALL_BUT_WRITE==WAL_WRITE_LOCK+1 );
  assert( WAL_CKPT_LOCK==WAL_ALL_BUT_WRITE );
  assert( pWal->writeLock );
  iLock = WAL_ALL_BUT_WRITE + pWal->ckptLock;
  nLock = SQLITE_SHM_NLOCK - iLock;
  rc = walLockExclusive(pWal, iLock, nLock, 0);
  if( rc ){
    return rc;
  }
  WALTRACE(("WAL%p: recovery begin...\n", pWal));

  memset(&pWal->hdr, 0, sizeof(WalIndexHdr));

................................................................................
  int (*xBusy)(void*),            /* Function to call when busy */
  void *pBusyArg,                 /* Context argument for xBusyHandler */
  int lockIdx,                    /* Offset of first byte to lock */
  int n                           /* Number of bytes to lock */
){
  int rc;
  do {
    rc = walLockExclusive(pWal, lockIdx, n, 0);
  }while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) );
  return rc;
}

/*
** The cache of the wal-index header must be valid to call this function.
** Return the page-size in bytes used by the database.
................................................................................
  assert( badHdr==0 || pWal->writeLock==0 );
  if( badHdr ){
    if( pWal->readOnly & WAL_SHM_RDONLY ){
      if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){
        walUnlockShared(pWal, WAL_WRITE_LOCK);
        rc = SQLITE_READONLY_RECOVERY;
      }
    }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1, 1)) ){
      pWal->writeLock = 1;
      if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
        badHdr = walIndexTryHdr(pWal, pChanged);
        if( badHdr ){
          /* If the wal-index header is still malformed even while holding
          ** a WRITE lock, it can only mean that the header is corrupted and
          ** needs to be reconstructed.  So run recovery to do exactly that.
................................................................................
  }
  /* There was once an "if" here. The extra "{" is to preserve indentation. */
  {
    if( (pWal->readOnly & WAL_SHM_RDONLY)==0
     && (mxReadMark<pWal->hdr.mxFrame || mxI==0)
    ){
      for(i=1; i<WAL_NREADER; i++){
        rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1, 0);
        if( rc==SQLITE_OK ){
          mxReadMark = pInfo->aReadMark[i] = pWal->hdr.mxFrame;
          mxI = i;
          walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
          break;
        }else if( rc!=SQLITE_BUSY ){
          return rc;
................................................................................
  if( pWal->readOnly ){
    return SQLITE_READONLY;
  }

  /* Only one writer allowed at a time.  Get the write lock.  Return
  ** SQLITE_BUSY if unable.
  */
  rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1, 0);
  if( rc ){
    return rc;
  }
  pWal->writeLock = 1;

  /* If another connection has written to the database file since the
  ** time the read transaction on this connection was started, then
................................................................................

  if( pWal->readLock==0 ){
    volatile WalCkptInfo *pInfo = walCkptInfo(pWal);
    assert( pInfo->nBackfill==pWal->hdr.mxFrame );
    if( pInfo->nBackfill>0 ){
      u32 salt1;
      sqlite3_randomness(4, &salt1);
      rc = walLockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1, 0);
      if( rc==SQLITE_OK ){
        /* If all readers are using WAL_READ_LOCK(0) (in other words if no
        ** readers are currently using the WAL), then the transactions
        ** frames will overwrite the start of the existing log. Update the
        ** wal-index header to reflect this.
        **
        ** In theory it would be Ok to update the cache of the header only
................................................................................
  assert( eMode!=SQLITE_CHECKPOINT_PASSIVE || xBusy==0 );

  if( pWal->readOnly ) return SQLITE_READONLY;
  WALTRACE(("WAL%p: checkpoint begins\n", pWal));

  /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive 
  ** "checkpoint" lock on the database file. */
  rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1, 0);
  if( rc ){
    /* EVIDENCE-OF: R-10421-19736 If any other process is running a
    ** checkpoint operation at the same time, the lock cannot be obtained and
    ** SQLITE_BUSY is returned.
    ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured,
    ** it will not be invoked in this case.
    */

** Mark term iChild as being a child of term iParent
*/
static void markTermAsChild(WhereClause *pWC, int iChild, int iParent){
  pWC->a[iChild].iParent = iParent;
  pWC->a[iChild].truthProb = pWC->a[iParent].truthProb;
  pWC->a[iParent].nChild++;
}










































































#if !defined(SQLITE_OMIT_OR_OPTIMIZATION) && !defined(SQLITE_OMIT_SUBQUERY)
/*
** Analyze a term that consists of two or more OR-connected
** subterms.  So in:
**
**     ... WHERE  (a=5) AND (b=7 OR c=9 OR d=13) AND (d=13)
................................................................................
** Examples of terms under analysis:
**
**     (A)     t1.x=t2.y OR t1.x=t2.z OR t1.y=15 OR t1.z=t3.a+5
**     (B)     x=expr1 OR expr2=x OR x=expr3
**     (C)     t1.x=t2.y OR (t1.x=t2.z AND t1.y=15)
**     (D)     x=expr1 OR (y>11 AND y<22 AND z LIKE '*hello*')
**     (E)     (p.a=1 AND q.b=2 AND r.c=3) OR (p.x=4 AND q.y=5 AND r.z=6)

**
** CASE 1:
**
** If all subterms are of the form T.C=expr for some single column of C and
** a single table T (as shown in example B above) then create a new virtual
** term that is an equivalent IN expression.  In other words, if the term
** being analyzed is:
................................................................................
**      x = expr1  OR  expr2 = x  OR  x = expr3
**
** then create a new virtual term like this:
**
**      x IN (expr1,expr2,expr3)
**
** CASE 2:










**
** If all subterms are indexable by a single table T, then set
**
**     WhereTerm.eOperator              =  WO_OR
**     WhereTerm.u.pOrInfo->indexable  |=  the cursor number for table T
**
** A subterm is "indexable" if it is of the form
................................................................................
      }else{
        chngToIN &= b;
      }
    }
  }

  /*
  ** Record the set of tables that satisfy case 2.  The set might be
  ** empty.
  */
  pOrInfo->indexable = indexable;
  pTerm->eOperator = indexable==0 ? 0 : WO_OR;















  /*
  ** chngToIN holds a set of tables that *might* satisfy case 1.  But
  ** we have to do some additional checking to see if case 1 really
  ** is satisfied.
  **
  ** chngToIN will hold either 0, 1, or 2 bits.  The 0-bit case means
................................................................................
        testcase( idxNew==0 );
        exprAnalyze(pSrc, pWC, idxNew);
        pTerm = &pWC->a[idxTerm];
        markTermAsChild(pWC, idxNew, idxTerm);
      }else{
        sqlite3ExprListDelete(db, pList);
      }
      pTerm->eOperator = WO_NOOP;  /* case 1 trumps case 2 */
    }
  }
}
#endif /* !SQLITE_OMIT_OR_OPTIMIZATION && !SQLITE_OMIT_SUBQUERY */

/*
** The input to this routine is an WhereTerm structure with only the
................................................................................
  ){
    Expr *pLeft;       /* LHS of LIKE/GLOB operator */
    Expr *pStr2;       /* Copy of pStr1 - RHS of LIKE/GLOB operator */
    Expr *pNewExpr1;
    Expr *pNewExpr2;
    int idxNew1;
    int idxNew2;
    Token sCollSeqName;  /* Name of collating sequence */
    const u16 wtFlags = TERM_LIKEOPT | TERM_VIRTUAL | TERM_DYNAMIC;

    pLeft = pExpr->x.pList->a[1].pExpr;
    pStr2 = sqlite3ExprDup(db, pStr1, 0);

    /* Convert the lower bound to upper-case and the upper bound to
    ** lower-case (upper-case is less than lower-case in ASCII) so that
................................................................................
        ** LIKE on all candidate expressions by clearing the isComplete flag
        */
        if( c=='A'-1 ) isComplete = 0;
        c = sqlite3UpperToLower[c];
      }
      *pC = c + 1;
    }
    sCollSeqName.z = noCase ? "NOCASE" : "BINARY";
    sCollSeqName.n = 6;
    pNewExpr1 = sqlite3ExprDup(db, pLeft, 0);
    pNewExpr1 = sqlite3PExpr(pParse, TK_GE,
           sqlite3ExprAddCollateToken(pParse,pNewExpr1,&sCollSeqName),

           pStr1, 0);
    transferJoinMarkings(pNewExpr1, pExpr);
    idxNew1 = whereClauseInsert(pWC, pNewExpr1, wtFlags);
    testcase( idxNew1==0 );
    exprAnalyze(pSrc, pWC, idxNew1);
    pNewExpr2 = sqlite3ExprDup(db, pLeft, 0);
    pNewExpr2 = sqlite3PExpr(pParse, TK_LT,
           sqlite3ExprAddCollateToken(pParse,pNewExpr2,&sCollSeqName),
           pStr2, 0);
    transferJoinMarkings(pNewExpr2, pExpr);
    idxNew2 = whereClauseInsert(pWC, pNewExpr2, wtFlags);
    testcase( idxNew2==0 );
    exprAnalyze(pSrc, pWC, idxNew2);
    pTerm = &pWC->a[idxTerm];
    if( isComplete ){
................................................................................
#endif /* !defined(SQLITE_OMIT_VIRTUALTABLE) */

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Estimate the location of a particular key among all keys in an
** index.  Store the results in aStat as follows:
**
**    aStat[0]      Est. number of rows less than pVal
**    aStat[1]      Est. number of rows equal to pVal
**
** Return the index of the sample that is the smallest sample that
** is greater than or equal to pRec.



*/
static int whereKeyStats(
  Parse *pParse,              /* Database connection */
  Index *pIdx,                /* Index to consider domain of */
  UnpackedRecord *pRec,       /* Vector of values to consider */
  int roundUp,                /* Round up if true.  Round down if false */
  tRowcnt *aStat              /* OUT: stats written here */
){
  IndexSample *aSample = pIdx->aSample;
  int iCol;                   /* Index of required stats in anEq[] etc. */


  int iMin = 0;               /* Smallest sample not yet tested */
  int i = pIdx->nSample;      /* Smallest sample larger than or equal to pRec */
  int iTest;                  /* Next sample to test */
  int res;                    /* Result of comparison operation */



#ifndef SQLITE_DEBUG
  UNUSED_PARAMETER( pParse );
#endif
  assert( pRec!=0 );
  iCol = pRec->nField - 1;
  assert( pIdx->nSample>0 );
  assert( pRec->nField>0 && iCol<pIdx->nSampleCol );
















































  do{



    iTest = (iMin+i)/2;













    res = sqlite3VdbeRecordCompare(aSample[iTest].n, aSample[iTest].p, pRec);
    if( res<0 ){

      iMin = iTest+1;




    }else{
      i = iTest;

    }
  }while( res && iMin<i );


#ifdef SQLITE_DEBUG
  /* The following assert statements check that the binary search code
  ** above found the right answer. This block serves no purpose other
  ** than to invoke the asserts.  */

  if( res==0 ){
    /* If (res==0) is true, then sample $i must be equal to pRec */
    assert( i<pIdx->nSample );


    assert( 0==sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)
         || pParse->db->mallocFailed );

  }else{

    /* Otherwise, pRec must be smaller than sample $i and larger than
    ** sample ($i-1).  */



    assert( i==pIdx->nSample 
         || sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)>0
         || pParse->db->mallocFailed );
    assert( i==0












         || sqlite3VdbeRecordCompare(aSample[i-1].n, aSample[i-1].p, pRec)<0
         || pParse->db->mallocFailed );
  }


#endif /* ifdef SQLITE_DEBUG */

  /* At this point, aSample[i] is the first sample that is greater than
  ** or equal to pVal.  Or if i==pIdx->nSample, then all samples are less
  ** than pVal.  If aSample[i]==pVal, then res==0.
  */
  if( res==0 ){


    aStat[0] = aSample[i].anLt[iCol];
    aStat[1] = aSample[i].anEq[iCol];
  }else{
    tRowcnt iLower, iUpper, iGap;
    if( i==0 ){
      iLower = 0;
      iUpper = aSample[0].anLt[iCol];
    }else{
      i64 nRow0 = sqlite3LogEstToInt(pIdx->aiRowLogEst[0]);
      iUpper = i>=pIdx->nSample ? nRow0 : aSample[i].anLt[iCol];
      iLower = aSample[i-1].anEq[iCol] + aSample[i-1].anLt[iCol];
    }
    aStat[1] = pIdx->aAvgEq[iCol];
    if( iLower>=iUpper ){
      iGap = 0;
    }else{
      iGap = iUpper - iLower;
    }
    if( roundUp ){
      iGap = (iGap*2)/3;
    }else{
      iGap = iGap/3;
    }
    aStat[0] = iLower + iGap;

  }



  return i;
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

/*
** If it is not NULL, pTerm is a term that provides an upper or lower
** bound on a range scan. Without considering pTerm, it is estimated 
................................................................................
    memset(aSortCost, 0, sizeof(LogEst) * nOrderBy);
  }
  assert( aSortCost==0 || &pSpace[nSpace]==(char*)&aSortCost[nOrderBy] );
  assert( aSortCost!=0 || &pSpace[nSpace]==(char*)pX );

  /* Seed the search with a single WherePath containing zero WhereLoops.
  **
  ** TUNING: Do not let the number of iterations go above 25.  If the cost
  ** of computing an automatic index is not paid back within the first 25
  ** rows, then do not use the automatic index. */
  aFrom[0].nRow = MIN(pParse->nQueryLoop, 46);  assert( 46==sqlite3LogEst(25) );
  nFrom = 1;
  assert( aFrom[0].isOrdered==0 );
  if( nOrderBy ){
    /* If nLoop is zero, then there are no FROM terms in the query. Since
    ** in this case the query may return a maximum of one row, the results
    ** are already in the requested order. Set isOrdered to nOrderBy to
    ** indicate this. Or, if nLoop is greater than zero, set isOrdered to
................................................................................
      }
      pLevel->iIdxCur = iIndexCur;
      assert( pIx->pSchema==pTab->pSchema );
      assert( iIndexCur>=0 );
      if( op ){
        sqlite3VdbeAddOp3(v, op, iIndexCur, pIx->tnum, iDb);
        sqlite3VdbeSetP4KeyInfo(pParse, pIx);






        VdbeComment((v, "%s", pIx->zName));
      }
    }
    if( iDb>=0 ) sqlite3CodeVerifySchema(pParse, iDb);
    notReady &= ~getMask(&pWInfo->sMaskSet, pTabItem->iCursor);
  }
  pWInfo->iTop = sqlite3VdbeCurrentAddr(v);

** Mark term iChild as being a child of term iParent
*/
static void markTermAsChild(WhereClause *pWC, int iChild, int iParent){
  pWC->a[iChild].iParent = iParent;
  pWC->a[iChild].truthProb = pWC->a[iParent].truthProb;
  pWC->a[iParent].nChild++;
}

/*
** Return the N-th AND-connected subterm of pTerm.  Or if pTerm is not
** a conjunction, then return just pTerm when N==0.  If N is exceeds
** the number of available subterms, return NULL.
*/
static WhereTerm *whereNthSubterm(WhereTerm *pTerm, int N){
  if( pTerm->eOperator!=WO_AND ){
    return N==0 ? pTerm : 0;
  }
  if( N<pTerm->u.pAndInfo->wc.nTerm ){
    return &pTerm->u.pAndInfo->wc.a[N];
  }
  return 0;
}

/*
** Subterms pOne and pTwo are contained within WHERE clause pWC.  The
** two subterms are in disjunction - they are OR-ed together.
**
** If these two terms are both of the form:  "A op B" with the same
** A and B values but different operators and if the operators are
** compatible (if one is = and the other is <, for example) then
** add a new virtual AND term to pWC that is the combination of the
** two.
**
** Some examples:
**
**    x<y OR x=y    -->     x<=y
**    x=y OR x=y    -->     x=y
**    x<=y OR x<y   -->     x<=y
**
** The following is NOT generated:
**
**    x<y OR x>y    -->     x!=y     
*/
static void whereCombineDisjuncts(
  SrcList *pSrc,         /* the FROM clause */
  WhereClause *pWC,      /* The complete WHERE clause */
  WhereTerm *pOne,       /* First disjunct */
  WhereTerm *pTwo        /* Second disjunct */
){
  u16 eOp = pOne->eOperator | pTwo->eOperator;
  sqlite3 *db;           /* Database connection (for malloc) */
  Expr *pNew;            /* New virtual expression */
  int op;                /* Operator for the combined expression */
  int idxNew;            /* Index in pWC of the next virtual term */

  if( (pOne->eOperator & (WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE))==0 ) return;
  if( (pTwo->eOperator & (WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE))==0 ) return;
  if( (eOp & (WO_EQ|WO_LT|WO_LE))!=eOp
   && (eOp & (WO_EQ|WO_GT|WO_GE))!=eOp ) return;
  assert( pOne->pExpr->pLeft!=0 && pOne->pExpr->pRight!=0 );
  assert( pTwo->pExpr->pLeft!=0 && pTwo->pExpr->pRight!=0 );
  if( sqlite3ExprCompare(pOne->pExpr->pLeft, pTwo->pExpr->pLeft, -1) ) return;
  if( sqlite3ExprCompare(pOne->pExpr->pRight, pTwo->pExpr->pRight, -1) )return;
  /* If we reach this point, it means the two subterms can be combined */
  if( (eOp & (eOp-1))!=0 ){
    if( eOp & (WO_LT|WO_LE) ){
      eOp = WO_LE;
    }else{
      assert( eOp & (WO_GT|WO_GE) );
      eOp = WO_GE;
    }
  }
  db = pWC->pWInfo->pParse->db;
  pNew = sqlite3ExprDup(db, pOne->pExpr, 0);
  if( pNew==0 ) return;
  for(op=TK_EQ; eOp!=(WO_EQ<<(op-TK_EQ)); op++){ assert( op<TK_GE ); }
  pNew->op = op;
  idxNew = whereClauseInsert(pWC, pNew, TERM_VIRTUAL|TERM_DYNAMIC);
  exprAnalyze(pSrc, pWC, idxNew);
}

#if !defined(SQLITE_OMIT_OR_OPTIMIZATION) && !defined(SQLITE_OMIT_SUBQUERY)
/*
** Analyze a term that consists of two or more OR-connected
** subterms.  So in:
**
**     ... WHERE  (a=5) AND (b=7 OR c=9 OR d=13) AND (d=13)
................................................................................
** Examples of terms under analysis:
**
**     (A)     t1.x=t2.y OR t1.x=t2.z OR t1.y=15 OR t1.z=t3.a+5
**     (B)     x=expr1 OR expr2=x OR x=expr3
**     (C)     t1.x=t2.y OR (t1.x=t2.z AND t1.y=15)
**     (D)     x=expr1 OR (y>11 AND y<22 AND z LIKE '*hello*')
**     (E)     (p.a=1 AND q.b=2 AND r.c=3) OR (p.x=4 AND q.y=5 AND r.z=6)
**     (F)     x>A OR (x=A AND y>=B)
**
** CASE 1:
**
** If all subterms are of the form T.C=expr for some single column of C and
** a single table T (as shown in example B above) then create a new virtual
** term that is an equivalent IN expression.  In other words, if the term
** being analyzed is:
................................................................................
**      x = expr1  OR  expr2 = x  OR  x = expr3
**
** then create a new virtual term like this:
**
**      x IN (expr1,expr2,expr3)
**
** CASE 2:
**
** If there are exactly two disjuncts one side has x>A and the other side
** has x=A (for the same x and A) then add a new virtual conjunct term to the
** WHERE clause of the form "x>=A".  Example:
**
**      x>A OR (x=A AND y>B)    adds:    x>=A
**
** The added conjunct can sometimes be helpful in query planning.
**
** CASE 3:
**
** If all subterms are indexable by a single table T, then set
**
**     WhereTerm.eOperator              =  WO_OR
**     WhereTerm.u.pOrInfo->indexable  |=  the cursor number for table T
**
** A subterm is "indexable" if it is of the form
................................................................................
      }else{
        chngToIN &= b;
      }
    }
  }

  /*
  ** Record the set of tables that satisfy case 3.  The set might be
  ** empty.
  */
  pOrInfo->indexable = indexable;
  pTerm->eOperator = indexable==0 ? 0 : WO_OR;

  /* For a two-way OR, attempt to implementation case 2.
  */
  if( indexable && pOrWc->nTerm==2 ){
    int iOne = 0;
    WhereTerm *pOne;
    while( (pOne = whereNthSubterm(&pOrWc->a[0],iOne++))!=0 ){
      int iTwo = 0;
      WhereTerm *pTwo;
      while( (pTwo = whereNthSubterm(&pOrWc->a[1],iTwo++))!=0 ){
        whereCombineDisjuncts(pSrc, pWC, pOne, pTwo);
      }
    }
  }

  /*
  ** chngToIN holds a set of tables that *might* satisfy case 1.  But
  ** we have to do some additional checking to see if case 1 really
  ** is satisfied.
  **
  ** chngToIN will hold either 0, 1, or 2 bits.  The 0-bit case means
................................................................................
        testcase( idxNew==0 );
        exprAnalyze(pSrc, pWC, idxNew);
        pTerm = &pWC->a[idxTerm];
        markTermAsChild(pWC, idxNew, idxTerm);
      }else{
        sqlite3ExprListDelete(db, pList);
      }
      pTerm->eOperator = WO_NOOP;  /* case 1 trumps case 3 */
    }
  }
}
#endif /* !SQLITE_OMIT_OR_OPTIMIZATION && !SQLITE_OMIT_SUBQUERY */

/*
** The input to this routine is an WhereTerm structure with only the
................................................................................
  ){
    Expr *pLeft;       /* LHS of LIKE/GLOB operator */
    Expr *pStr2;       /* Copy of pStr1 - RHS of LIKE/GLOB operator */
    Expr *pNewExpr1;
    Expr *pNewExpr2;
    int idxNew1;
    int idxNew2;
    const char *zCollSeqName;     /* Name of collating sequence */
    const u16 wtFlags = TERM_LIKEOPT | TERM_VIRTUAL | TERM_DYNAMIC;

    pLeft = pExpr->x.pList->a[1].pExpr;
    pStr2 = sqlite3ExprDup(db, pStr1, 0);

    /* Convert the lower bound to upper-case and the upper bound to
    ** lower-case (upper-case is less than lower-case in ASCII) so that
................................................................................
        ** LIKE on all candidate expressions by clearing the isComplete flag
        */
        if( c=='A'-1 ) isComplete = 0;
        c = sqlite3UpperToLower[c];
      }
      *pC = c + 1;
    }
    zCollSeqName = noCase ? "NOCASE" : "BINARY";

    pNewExpr1 = sqlite3ExprDup(db, pLeft, 0);
    pNewExpr1 = sqlite3PExpr(pParse, TK_GE,

           sqlite3ExprAddCollateString(pParse,pNewExpr1,zCollSeqName),
           pStr1, 0);
    transferJoinMarkings(pNewExpr1, pExpr);
    idxNew1 = whereClauseInsert(pWC, pNewExpr1, wtFlags);
    testcase( idxNew1==0 );
    exprAnalyze(pSrc, pWC, idxNew1);
    pNewExpr2 = sqlite3ExprDup(db, pLeft, 0);
    pNewExpr2 = sqlite3PExpr(pParse, TK_LT,
           sqlite3ExprAddCollateString(pParse,pNewExpr2,zCollSeqName),
           pStr2, 0);
    transferJoinMarkings(pNewExpr2, pExpr);
    idxNew2 = whereClauseInsert(pWC, pNewExpr2, wtFlags);
    testcase( idxNew2==0 );
    exprAnalyze(pSrc, pWC, idxNew2);
    pTerm = &pWC->a[idxTerm];
    if( isComplete ){
................................................................................
#endif /* !defined(SQLITE_OMIT_VIRTUALTABLE) */

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Estimate the location of a particular key among all keys in an
** index.  Store the results in aStat as follows:
**
**    aStat[0]      Est. number of rows less than pRec
**    aStat[1]      Est. number of rows equal to pRec
**
** Return the index of the sample that is the smallest sample that
** is greater than or equal to pRec. Note that this index is not an index
** into the aSample[] array - it is an index into a virtual set of samples
** based on the contents of aSample[] and the number of fields in record 
** pRec. 
*/
static int whereKeyStats(
  Parse *pParse,              /* Database connection */
  Index *pIdx,                /* Index to consider domain of */
  UnpackedRecord *pRec,       /* Vector of values to consider */
  int roundUp,                /* Round up if true.  Round down if false */
  tRowcnt *aStat              /* OUT: stats written here */
){
  IndexSample *aSample = pIdx->aSample;
  int iCol;                   /* Index of required stats in anEq[] etc. */
  int i;                      /* Index of first sample >= pRec */
  int iSample;                /* Smallest sample larger than or equal to pRec */
  int iMin = 0;               /* Smallest sample not yet tested */

  int iTest;                  /* Next sample to test */
  int res;                    /* Result of comparison operation */
  int nField;                 /* Number of fields in pRec */
  tRowcnt iLower = 0;         /* anLt[] + anEq[] of largest sample pRec is > */

#ifndef SQLITE_DEBUG
  UNUSED_PARAMETER( pParse );
#endif
  assert( pRec!=0 );

  assert( pIdx->nSample>0 );
  assert( pRec->nField>0 && pRec->nField<=pIdx->nSampleCol );

  /* Do a binary search to find the first sample greater than or equal
  ** to pRec. If pRec contains a single field, the set of samples to search
  ** is simply the aSample[] array. If the samples in aSample[] contain more
  ** than one fields, all fields following the first are ignored.
  **
  ** If pRec contains N fields, where N is more than one, then as well as the
  ** samples in aSample[] (truncated to N fields), the search also has to
  ** consider prefixes of those samples. For example, if the set of samples
  ** in aSample is:
  **
  **     aSample[0] = (a, 5) 
  **     aSample[1] = (a, 10) 
  **     aSample[2] = (b, 5) 
  **     aSample[3] = (c, 100) 
  **     aSample[4] = (c, 105)
  **
  ** Then the search space should ideally be the samples above and the 
  ** unique prefixes [a], [b] and [c]. But since that is hard to organize, 
  ** the code actually searches this set:
  **
  **     0: (a) 
  **     1: (a, 5) 
  **     2: (a, 10) 
  **     3: (a, 10) 
  **     4: (b) 
  **     5: (b, 5) 
  **     6: (c) 
  **     7: (c, 100) 
  **     8: (c, 105)
  **     9: (c, 105)
  **
  ** For each sample in the aSample[] array, N samples are present in the
  ** effective sample array. In the above, samples 0 and 1 are based on 
  ** sample aSample[0]. Samples 2 and 3 on aSample[1] etc.
  **
  ** Often, sample i of each block of N effective samples has (i+1) fields.
  ** Except, each sample may be extended to ensure that it is greater than or
  ** equal to the previous sample in the array. For example, in the above, 
  ** sample 2 is the first sample of a block of N samples, so at first it 
  ** appears that it should be 1 field in size. However, that would make it 
  ** smaller than sample 1, so the binary search would not work. As a result, 
  ** it is extended to two fields. The duplicates that this creates do not 
  ** cause any problems.
  */
  nField = pRec->nField;
  iCol = 0;
  iSample = pIdx->nSample * nField;
  do{
    int iSamp;                    /* Index in aSample[] of test sample */
    int n;                        /* Number of fields in test sample */

    iTest = (iMin+iSample)/2;
    iSamp = iTest / nField;
    if( iSamp>0 ){
      /* The proposed effective sample is a prefix of sample aSample[iSamp].
      ** Specifically, the shortest prefix of at least (1 + iTest%nField) 
      ** fields that is greater than the previous effective sample.  */
      for(n=(iTest % nField) + 1; n<nField; n++){
        if( aSample[iSamp-1].anLt[n-1]!=aSample[iSamp].anLt[n-1] ) break;
      }
    }else{
      n = iTest + 1;
    }

    pRec->nField = n;
    res = sqlite3VdbeRecordCompare(aSample[iSamp].n, aSample[iSamp].p, pRec);
    if( res<0 ){
      iLower = aSample[iSamp].anLt[n-1] + aSample[iSamp].anEq[n-1];
      iMin = iTest+1;
    }else if( res==0 && n<nField ){
      iLower = aSample[iSamp].anLt[n-1];
      iMin = iTest+1;
      res = -1;
    }else{
      iSample = iTest;
      iCol = n-1;
    }
  }while( res && iMin<iSample );
  i = iSample / nField;

#ifdef SQLITE_DEBUG
  /* The following assert statements check that the binary search code
  ** above found the right answer. This block serves no purpose other
  ** than to invoke the asserts.  */
  if( pParse->db->mallocFailed==0 ){
    if( res==0 ){
      /* If (res==0) is true, then pRec must be equal to sample i. */
      assert( i<pIdx->nSample );
      assert( iCol==nField-1 );
      pRec->nField = nField;
      assert( 0==sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec) 
           || pParse->db->mallocFailed 
      );
    }else{
      /* Unless i==pIdx->nSample, indicating that pRec is larger than
      ** all samples in the aSample[] array, pRec must be smaller than the

      ** (iCol+1) field prefix of sample i.  */
      assert( i<=pIdx->nSample && i>=0 );
      pRec->nField = iCol+1;
      assert( i==pIdx->nSample 
           || sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)>0
           || pParse->db->mallocFailed );


      /* if i==0 and iCol==0, then record pRec is smaller than all samples
      ** in the aSample[] array. Otherwise, if (iCol>0) then pRec must
      ** be greater than or equal to the (iCol) field prefix of sample i.
      ** If (i>0), then pRec must also be greater than sample (i-1).  */
      if( iCol>0 ){
        pRec->nField = iCol;
        assert( sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)<=0
             || pParse->db->mallocFailed );
      }
      if( i>0 ){
        pRec->nField = nField;
        assert( sqlite3VdbeRecordCompare(aSample[i-1].n, aSample[i-1].p, pRec)<0
             || pParse->db->mallocFailed );
      }
    }
  }
#endif /* ifdef SQLITE_DEBUG */





  if( res==0 ){
    /* Record pRec is equal to sample i */
    assert( iCol==nField-1 );
    aStat[0] = aSample[i].anLt[iCol];
    aStat[1] = aSample[i].anEq[iCol];
  }else{
    /* At this point, the (iCol+1) field prefix of aSample[i] is the first 
    ** sample that is greater than pRec. Or, if i==pIdx->nSample then pRec
    ** is larger than all samples in the array. */
    tRowcnt iUpper, iGap;
    if( i>=pIdx->nSample ){
      iUpper = sqlite3LogEstToInt(pIdx->aiRowLogEst[0]);
    }else{
      iUpper = aSample[i].anLt[iCol];
    }

    if( iLower>=iUpper ){
      iGap = 0;
    }else{
      iGap = iUpper - iLower;
    }
    if( roundUp ){
      iGap = (iGap*2)/3;
    }else{
      iGap = iGap/3;
    }
    aStat[0] = iLower + iGap;
    aStat[1] = pIdx->aAvgEq[iCol];
  }

  /* Restore the pRec->nField value before returning.  */
  pRec->nField = nField;
  return i;
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

/*
** If it is not NULL, pTerm is a term that provides an upper or lower
** bound on a range scan. Without considering pTerm, it is estimated 
................................................................................
    memset(aSortCost, 0, sizeof(LogEst) * nOrderBy);
  }
  assert( aSortCost==0 || &pSpace[nSpace]==(char*)&aSortCost[nOrderBy] );
  assert( aSortCost!=0 || &pSpace[nSpace]==(char*)pX );

  /* Seed the search with a single WherePath containing zero WhereLoops.
  **
  ** TUNING: Do not let the number of iterations go above 28.  If the cost
  ** of computing an automatic index is not paid back within the first 28
  ** rows, then do not use the automatic index. */
  aFrom[0].nRow = MIN(pParse->nQueryLoop, 48);  assert( 48==sqlite3LogEst(28) );
  nFrom = 1;
  assert( aFrom[0].isOrdered==0 );
  if( nOrderBy ){
    /* If nLoop is zero, then there are no FROM terms in the query. Since
    ** in this case the query may return a maximum of one row, the results
    ** are already in the requested order. Set isOrdered to nOrderBy to
    ** indicate this. Or, if nLoop is greater than zero, set isOrdered to
................................................................................
      }
      pLevel->iIdxCur = iIndexCur;
      assert( pIx->pSchema==pTab->pSchema );
      assert( iIndexCur>=0 );
      if( op ){
        sqlite3VdbeAddOp3(v, op, iIndexCur, pIx->tnum, iDb);
        sqlite3VdbeSetP4KeyInfo(pParse, pIx);
        if( (pLoop->wsFlags & WHERE_CONSTRAINT)!=0
         && (pLoop->wsFlags & (WHERE_COLUMN_RANGE|WHERE_SKIPSCAN))==0
         && (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0
        ){
          sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ); /* Hint to COMDB2 */
        }
        VdbeComment((v, "%s", pIx->zName));
      }
    }
    if( iDb>=0 ) sqlite3CodeVerifySchema(pParse, iDb);
    notReady &= ~getMask(&pWInfo->sMaskSet, pTabItem->iCursor);
  }
  pWInfo->iTop = sqlite3VdbeCurrentAddr(v);

  }
  do_eqp_test 25.4.2 { 
    SELECT * FROM t6 WHERE a < 20 AND (b BETWEEN ? AND 60)
  } {
    0 0 0 {SEARCH TABLE t6 USING INDEX bb (b>? AND b<?)}
  }
}














































































































finish_test

  }
  do_eqp_test 25.4.2 { 
    SELECT * FROM t6 WHERE a < 20 AND (b BETWEEN ? AND 60)
  } {
    0 0 0 {SEARCH TABLE t6 USING INDEX bb (b>? AND b<?)}
  }
}

#-------------------------------------------------------------------------
# Check that a problem in they way stat4 data is used has been 
# resolved (see below).
#
reset_db
do_test 26.1.1 {
  db transaction {
    execsql { 
      CREATE TABLE t1(x, y, z);
      CREATE INDEX t1xy ON t1(x, y);
      CREATE INDEX t1z ON t1(z);
    }
    for {set i 0} {$i < 10000} {incr i} {
      execsql { INSERT INTO t1(x, y) VALUES($i, $i) }
    }
    for {set i 0} {$i < 10} {incr i} {
      execsql {
        WITH cnt(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM cnt WHERE x<100)
        INSERT INTO t1(x, y) SELECT 10000+$i, x FROM cnt;
        INSERT INTO t1(x, y) SELECT 10000+$i, 100;
      }
    }
    execsql {
      UPDATE t1 SET z = rowid / 20;
      ANALYZE;
    }
  }
} {}

do_execsql_test 26.1.2 {
  SELECT count(*) FROM t1 WHERE x = 10000 AND y < 50;
} {49}
do_execsql_test 26.1.3 {
  SELECT count(*) FROM t1 WHERE z = 444;
} {20}

# The analyzer knows that any (z=?) expression matches 20 rows. So it
# will use index "t1z" if the estimate of hits for (x=10000 AND y<50)
# is greater than 20 rows.
#
# And it should be. The analyzer has a stat4 sample as follows:
#
#   sample=(x=10000, y=100) nLt=(10000 10099)
#
# There should be no other samples that start with (x=10000). So it knows 
# that (x=10000 AND y<50) must match somewhere between 0 and 99 rows, but
# know more than that. Guessing less than 20 is therefore unreasonable.
#
# At one point though, due to a problem in whereKeyStats(), the planner was
# estimating that (x=10000 AND y<50) would match only 2 rows.
#
do_eqp_test 26.1.4 {
  SELECT * FROM t1 WHERE x = 10000 AND y < 50 AND z = 444;
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1z (z=?)}
}


# This test - 26.2.* - tests that another manifestation of the same problem
# is no longer present in the library. Assuming:
# 
#   CREATE INDEX t1xy ON t1(x, y)
#
# and that have samples for index t1xy as follows:
#
#
#   sample=('A', 70)        nEq=(100, 2)        nLt=(900, 970)
#   sample=('B', 70)        nEq=(100, 2)        nLt=(1000, 1070)    
#
# the planner should estimate that (x = 'B' AND y > 25) matches 76 rows
# (70 * 2/3 + 30). Before, due to the problem, the planner was estimating 
# that this matched 100 rows.
# 
reset_db
do_execsql_test 26.2.1 {
  BEGIN;
    CREATE TABLE t1(x, y, z);
    CREATE INDEX i1 ON t1(x, y);
    CREATE INDEX i2 ON t1(z);
  
    WITH 
    cnt(y) AS (SELECT 0 UNION ALL SELECT y+1 FROM cnt WHERE y<99),
    letters(x) AS (
      SELECT 'A' UNION SELECT 'B' UNION SELECT 'C' UNION SELECT 'D'
    )
    INSERT INTO t1(x, y) SELECT x, y FROM letters, cnt;
  
    WITH
    letters(x) AS (
      SELECT 'A' UNION SELECT 'B' UNION SELECT 'C' UNION SELECT 'D'
    )
    INSERT INTO t1(x, y) SELECT x, 70 FROM letters;
  
    WITH
    cnt(i) AS (SELECT 0 UNION ALL SELECT i+1 FROM cnt WHERE i<9999)
    INSERT INTO t1(x, y) SELECT i, i FROM cnt;
  
    UPDATE t1 SET z = (rowid / 95);
    ANALYZE;
  COMMIT;
}

do_eqp_test 26.2.2 {
  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

# 2015-03-12
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# Test that deterministic scalar functions passed constant arguments
# are used with stat4 data.
#

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

ifcapable {!stat4} {
  finish_test
  return
}

proc isqrt {i} { expr { int(sqrt($i)) } }
db func isqrt isqrt

do_execsql_test 1.0 {
  CREATE TABLE t1(x INTEGER, y INTEGER);
  WITH data(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM data
  )
  INSERT INTO t1 SELECT isqrt(i), isqrt(i) FROM data LIMIT 400;
  CREATE INDEX t1x ON t1(x);
  CREATE INDEX t1y ON t1(y);
  ANALYZE;
}

proc str {a} { return $a }
db func str str

# Note: tests 7 to 12 might be unstable - as they assume SQLite will
# prefer the expression to the right of the AND clause. Which of
# course could change.
#
# Note 2: tests 9 and 10 depend on the tcl interface creating functions
# without the SQLITE_DETERMINISTIC flag set.
#
foreach {tn where idx} {
  1 "x = 4 AND y = 19"     {t1x (x=?)}
  2 "x = 19 AND y = 4"     {t1y (y=?)}
  3 "x = '4' AND y = '19'" {t1x (x=?)}
  4 "x = '19' AND y = '4'" {t1y (y=?)}
  5 "x = substr('5195', 2, 2) AND y = substr('145', 2, 1)" {t1y (y=?)}
  6 "x = substr('145', 2, 1) AND y = substr('5195', 2, 2)" {t1x (x=?)}

  7  "x = substr('5195', 2, 2+0) AND y = substr('145', 2, 1+0)" {t1y (y=?)}
  8  "x = substr('145', 2, 1+0) AND y = substr('5195', 2, 2+0)" {t1y (y=?)}

  9  "x = str('19') AND y = str('4')" {t1y (y=?)}
  10 "x = str('4') AND y = str('19')" {t1y (y=?)}

  11 "x = nullif('19', 0) AND y = nullif('4', 0)" {t1y (y=?)}
  12 "x = nullif('4', 0) AND y = nullif('19', 0)" {t1y (y=?)}
} {
  set res "0 0 0 {SEARCH TABLE t1 USING INDEX $idx}"
  do_eqp_test 1.$tn "SELECT * FROM t1 WHERE $where" $res
}

# Test that functions that do not exist - "func()" - do not cause an error.
#
do_catchsql_test 2.1 {
  SELECT * FROM t1 WHERE x = substr('145', 2, 1) AND y = func(1, 2, 3)
} {1 {no such function: func}}
do_catchsql_test 2.2 {
  UPDATE t1 SET y=y+1 WHERE x = substr('145', 2, 1) AND y = func(1, 2, 3)
} {1 {no such function: func}}


# Check that functions that accept zero arguments do not cause problems.
#
proc ret {x} { return $x }

db func det4 -deterministic [list ret 4]
db func nondet4 [list ret 4]
db func det19 -deterministic [list ret 19]
db func nondet19 [list ret 19]

foreach {tn where idx} {
  1 "x = det4() AND y = det19()"     {t1x (x=?)}
  2 "x = det19() AND y = det4()"     {t1y (y=?)}

  3 "x = nondet4() AND y = nondet19()"     {t1y (y=?)}
  4 "x = nondet19() AND y = nondet4()"     {t1y (y=?)}
} {
  set res "0 0 0 {SEARCH TABLE t1 USING INDEX $idx}"
  do_eqp_test 3.$tn "SELECT * FROM t1 WHERE $where" $res
}


execsql { DELETE FROM t1 }

proc throw_error {err} { error $err }
db func error -deterministic throw_error
do_catchsql_test 4.1 {
  SELECT * FROM t1 WHERE x = error('error one') AND y = 4;
} {1 {error one}}

do_catchsql_test 4.2 {
  SELECT * FROM t1 WHERE x = zeroblob(2000000000) AND y = 4;
} {1 {string or blob too big}}

sqlite3_limit db SQLITE_LIMIT_LENGTH 1000000
proc dstr {} { return [string repeat x 1100000] }
db func dstr -deterministic dstr
do_catchsql_test 4.3 {
  SELECT * FROM t1 WHERE x = dstr() AND y = 11;
} {1 {string or blob too big}}

do_catchsql_test 4.4 {
  SELECT * FROM t1 WHERE x = test_zeroblob(1100000) AND y = 4;
} {1 {string or blob too big}}


finish_test

#
#    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 page cache subsystem.
#
# $Id: collate1.test,v 1.5 2007/02/01 23:02:46 drh Exp $

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


#
# Tests are roughly organised as follows:
#
# collate1-1.* - Single-field ORDER BY with an explicit COLLATE clause.
# collate1-2.* - Multi-field ORDER BY with an explicit COLLATE clause.
# collate1-3.* - ORDER BY using a default collation type. Also that an 
................................................................................
} {1}
do_test collate1-5.3 {
  execsql {
    SELECT id FROM c5 WHERE c='abc' ORDER BY id;
  }
} {1 2}





















































finish_test

#
#    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 collation sequences.
#


set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix collate1

#
# Tests are roughly organised as follows:
#
# collate1-1.* - Single-field ORDER BY with an explicit COLLATE clause.
# collate1-2.* - Multi-field ORDER BY with an explicit COLLATE clause.
# collate1-3.* - ORDER BY using a default collation type. Also that an 
................................................................................
} {1}
do_test collate1-5.3 {
  execsql {
    SELECT id FROM c5 WHERE c='abc' ORDER BY id;
  }
} {1 2}



#-------------------------------------------------------------------------
# Fix problems with handling collation sequences named '"""'.
#
do_execsql_test 6.1 {
  SELECT """""""";
} {\"\"\"}

do_catchsql_test 6.2 {
  CREATE TABLE x1(a);
  SELECT a FROM x1 ORDER BY a COLLATE """""""";
} {1 {no such collation sequence: """}}

do_catchsql_test 6.3 {
  SELECT a FROM x1 ORDER BY 1 COLLATE """""""";
} {1 {no such collation sequence: """}}

do_catchsql_test 6.4 {
  SELECT 0 UNION SELECT 0 ORDER BY 1 COLLATE """""""";
} {1 {no such collation sequence: """}}

db collate {"""} [list string compare -nocase]

do_execsql_test 6.5 {
  PRAGMA foreign_keys = ON;
  CREATE TABLE p1(a PRIMARY KEY COLLATE '"""');
  CREATE TABLE c1(x, y REFERENCES p1);
} {}

do_execsql_test 6.6 { 
  INSERT INTO p1 VALUES('abc'); 
  INSERT INTO c1 VALUES(1, 'ABC'); 
}

ifcapable foreignkey {
  do_catchsql_test 6.7 { 
    DELETE FROM p1 WHERE rowid = 1 
  } {1 {FOREIGN KEY constraint failed}}
}

do_execsql_test 6.8 { 
  INSERT INTO p1 VALUES('abb');
  INSERT INTO p1 VALUES('wxz');
  INSERT INTO p1 VALUES('wxy');

  INSERT INTO c1 VALUES(2, 'abb');
  INSERT INTO c1 VALUES(3, 'wxz');
  INSERT INTO c1 VALUES(4, 'WXY');
  SELECT x, y FROM c1 ORDER BY y COLLATE """""""";
} {2 abb 1 ABC 4 WXY 3 wxz}

finish_test

# 2015 Mar 13
#
# 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.
#
#***********************************************************************
#
# Crash tests for the multiplex module with 8.3 filenames enabled.
#

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

ifcapable !crashtest||!8_3_names {
  finish_test
  return
}

db close
sqlite3_shutdown
sqlite3_config_uri 1

foreach f [glob -nocomplain test1.* test2.*] { forcedelete $f }
sqlite3_multiplex_initialize "" 1
sqlite3 db file:test1.db?8_3_names=1
sqlite3_multiplex_control db main chunk_size [expr 64*1024]

do_execsql_test 1.0 {
  ATTACH 'file:test2.db?8_3_names=1' AS aux;

  CREATE TABLE t1(x, y);
  CREATE INDEX t1x ON t1(x);
  CREATE INDEX t1y ON t1(y);

  CREATE TABLE aux.t2(x, y);
  CREATE INDEX aux.t2x ON t2(x);
  CREATE INDEX aux.t2y ON t2(y);

  WITH s(a) AS (
    SELECT 1 UNION ALL SELECT a+1 FROM s WHERE a<1000
  )
  INSERT INTO t1 SELECT a, randomblob(500) FROM s;

  WITH s(a) AS (
    SELECT 1 UNION ALL SELECT a+1 FROM s WHERE a<1000
  )
  INSERT INTO t2 SELECT a, randomblob(500) FROM s;
} {}

for {set i 0} {$i < 20} {incr i} {
  do_test 2.$i.1 {
    crashsql -delay 1 -file test1.db -opendb {
      sqlite3_shutdown
      sqlite3_config_uri 1
      sqlite3_multiplex_initialize crash 1
      sqlite3 db file:test1.db?8_3_names=1
      sqlite3_multiplex_control db main chunk_size [expr 64*1024]
    } {
      ATTACH 'file:test2.db?8_3_names=1' AS aux;
      BEGIN;
        UPDATE t1 SET y = randomblob(500) WHERE (x%10)==0;
        UPDATE t2 SET y = randomblob(500) WHERE (x%10)==0;
      COMMIT;
    }
  } {1 {child process exited abnormally}}

  do_execsql_test 2.$i.2 {
    PRAGMA main.integrity_check;
    PRAGMA aux.integrity_check;
  } {ok ok}
}

catch { db close }
sqlite3_multiplex_shutdown
finish_test

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


do_test fts3token-internal {
  execsql { SELECT fts3_tokenizer_internal_test() }
} {ok}

























finish_test

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


do_test fts3token-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: }}
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_catchsql_test 5.1 {
  CREATE VIRTUAL TABLE t4 USING fts4(prefix="abc");
} {1 {error parsing prefix parameter: abc}}
do_catchsql_test 5.2 {
  CREATE VIRTUAL TABLE t4 USING fts4(prefix="");
} {0 {}}

































































finish_test

#
do_catchsql_test 5.1 {
  CREATE VIRTUAL TABLE t4 USING fts4(prefix="abc");
} {1 {error parsing prefix parameter: abc}}
do_catchsql_test 5.2 {
  CREATE VIRTUAL TABLE t4 USING fts4(prefix="");
} {0 {}}
do_catchsql_test 5.3 {
  CREATE VIRTUAL TABLE t5 USING fts4(prefix="-1");
} {1 {error parsing prefix parameter: -1}}

#-------------------------------------------------------------------------
# Prefix indexes of size 0 are ignored. Demonstrate this by showing that
# adding prefix=0 does not change the contents of the %_segdir table.
#
reset_db
do_execsql_test 6.1.1 {
  CREATE VIRTUAL TABLE t1 USING fts4(prefix=0);
  CREATE VIRTUAL TABLE t2 USING fts4;
  INSERT INTO t1 VALUES('Twas Mulga Bill, from Eaglehawk, ');
  INSERT INTO t2 VALUES('Twas Mulga Bill, from Eaglehawk, ');
} {}
do_execsql_test 6.1.2 {
  SELECT md5sum(quote(root)) FROM t1_segdir;
} [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]

reset_db
do_execsql_test 6.2.1 {
  CREATE VIRTUAL TABLE t1 USING fts4(prefix="1,0,2");
  CREATE VIRTUAL TABLE t2 USING fts4(prefix="1,2");
  INSERT INTO t1 VALUES('that caught the cycling craze;');
  INSERT INTO t2 VALUES('that caught the cycling craze;');
} {}
do_execsql_test 6.2.2 {
  SELECT md5sum(quote(root)) FROM t1_segdir;
} [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]

reset_db
do_execsql_test 6.3.1 {
  CREATE VIRTUAL TABLE t1 USING fts4(prefix="1,3,2");
  CREATE VIRTUAL TABLE t2 USING fts4(prefix="1,2");
  INSERT INTO t1 VALUES('He turned away the good old horse');
  INSERT INTO t2 VALUES('He turned away the good old horse');
} {}
do_test 6.3.2 {
  set one [db eval {SELECT md5sum(quote(root)) FROM t1_segdir}]
  set two [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]
  expr {$one == $two}
} 0

reset_db
do_execsql_test 6.4.1 {
  CREATE VIRTUAL TABLE t1 USING fts4(prefix="1,600,2");
  CREATE VIRTUAL TABLE t2 USING fts4(prefix="1,2");
  INSERT INTO t1 VALUES('that served him many days;');
  INSERT INTO t2 VALUES('that served him many days;');
} {}
do_execsql_test 6.4.2 {
  SELECT md5sum(quote(root)) FROM t1_segdir;
} [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]

reset_db
do_execsql_test 6.5.1 {
  CREATE VIRTUAL TABLE t1 USING fts4(prefix="2147483647,2147483648,2147483649");
  CREATE VIRTUAL TABLE t2 USING fts4(prefix=);
  INSERT INTO t1 VALUES('He dressed himself in cycling clothes');
  INSERT INTO t2 VALUES('He dressed himself in cycling clothes');
} {}
do_execsql_test 6.5.2 {
  SELECT md5sum(quote(root)) FROM t1_segdir;
} [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]

finish_test

  set res [db eval { 
    SELECT rowid FROM t4 WHERE rowid BETWEEN $iFirst AND $iLast 
  } ]

  do_execsql_test 7.2.$tn.1.[llength $res] {
    SELECT rowid FROM ft4 WHERE rowid BETWEEN $iFirst AND $iLast
  } $res




  do_execsql_test 7.2.$tn.2.[llength $res] {
    SELECT rowid FROM ft4 WHERE rowid BETWEEN $iFirst AND $iLast
    ORDER BY rowid DESC
  } [lsort -decr -integer $res]
}

foreach ii [db eval {SELECT rowid FROM t4}] {
  set res1 [db eval {SELECT rowid FROM t4 WHERE rowid > $ii}]
  set res2 [db eval {SELECT rowid FROM t4 WHERE rowid < $ii}]



  do_execsql_test 7.3.$ii.1 {
    SELECT rowid FROM ft4 WHERE rowid > $ii
  } $res1

  do_execsql_test 7.3.$ii.2 {
    SELECT rowid FROM ft4 WHERE rowid < $ii
  } $res2

  do_execsql_test 7.3.$ii.3 {
    SELECT rowid FROM ft4 WHERE rowid > $ii ORDER BY rowid DESC
  } [lsort -integer -decr $res1]

  do_execsql_test 7.3.$ii.4 {
    SELECT rowid FROM ft4 WHERE rowid < $ii ORDER BY rowid DESC
  } [lsort -integer -decr $res2]
}

finish_test

  set res [db eval { 
    SELECT rowid FROM t4 WHERE rowid BETWEEN $iFirst AND $iLast 
  } ]

  do_execsql_test 7.2.$tn.1.[llength $res] {
    SELECT rowid FROM ft4 WHERE rowid BETWEEN $iFirst AND $iLast
  } $res
  set res [db eval { 
    SELECT rowid FROM t4 WHERE rowid BETWEEN $iFirst AND $iLast 
     ORDER BY +rowid DESC
  } ]
  do_execsql_test 7.2.$tn.2.[llength $res] {
    SELECT rowid FROM ft4 WHERE rowid BETWEEN $iFirst AND $iLast
    ORDER BY rowid DESC
  } $res
}

foreach ii [db eval {SELECT rowid FROM t4}] {
  set res1 [db eval {SELECT rowid FROM t4 WHERE rowid > $ii}]
  set res2 [db eval {SELECT rowid FROM t4 WHERE rowid < $ii}]
  set res1s [db eval {SELECT rowid FROM t4 WHERE rowid > $ii ORDER BY +rowid DESC}]
  set res2s [db eval {SELECT rowid FROM t4 WHERE rowid < $ii ORDER BY +rowid DESC}]

  do_execsql_test 7.3.$ii.1 {
    SELECT rowid FROM ft4 WHERE rowid > $ii
  } $res1

  do_execsql_test 7.3.$ii.2 {
    SELECT rowid FROM ft4 WHERE rowid < $ii
  } $res2

  do_execsql_test 7.3.$ii.3 {
    SELECT rowid FROM ft4 WHERE rowid > $ii ORDER BY rowid DESC
  } $res1s

  do_execsql_test 7.3.$ii.4 {
    SELECT rowid FROM ft4 WHERE rowid < $ii ORDER BY rowid DESC
  } $res2s
}

finish_test

} {}

do_test incrblob2-6.2 {
  set rdHandle [db incrblob -readonly t1 data 1]
  sqlite3_blob_read $rdHandle 0 2
} {AB}


do_test incrblob2-6.2b {









  set rc [catch {
    # Prior to 2015-02-07, the following caused a segfault due to
    # integer overflow.
    sqlite3_blob_read $rdHandle 2147483647 2147483647
  } errmsg]
  lappend rc $errmsg
} {1 SQLITE_ERROR}

do_test incrblob2-6.3 {
  set wrHandle [db incrblob t1 data 1]
  sqlite3_blob_write $wrHandle 0 ZZZZZZZZZZ

} {}

do_test incrblob2-6.2 {
  set rdHandle [db incrblob -readonly t1 data 1]
  sqlite3_blob_read $rdHandle 0 2
} {AB}

if {$::tcl_platform(pointerSize)>=8} {
  do_test incrblob2-6.2b {
    set rc [catch {
      # Prior to 2015-02-07, the following caused a segfault due to
      # integer overflow.
      sqlite3_blob_read $rdHandle 2147483647 2147483647
    } errmsg]
    lappend rc $errmsg
  } {1 SQLITE_ERROR}
}
do_test incrblob2-6.2c {
  set rc [catch {
    # Prior to 2015-02-07, the following caused a segfault due to
    # integer overflow.
    sqlite3_blob_read $rdHandle 2147483647 100
  } errmsg]
  lappend rc $errmsg
} {1 SQLITE_ERROR}

do_test incrblob2-6.3 {
  set wrHandle [db incrblob t1 data 1]
  sqlite3_blob_write $wrHandle 0 ZZZZZZZZZZ

# 2001 October 12
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# Test that "PRAGMA incremental_vacuum" detects and reports database
# corruption properly. And that "PRAGMA auto_vacuum = INCREMENTAL"
# does as well.
#

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

# If this build of the library does not support auto-vacuum, omit this
# whole file.
ifcapable {!autovacuum} {
  finish_test
  return
}

do_execsql_test 1.0 {
  PRAGMA auto_vacuum = 2;
  CREATE TABLE t1(a PRIMARY KEY, b);

  WITH data(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM data
  )
  INSERT INTO t1 SELECT i, randomblob(600) FROM data LIMIT 20;
  PRAGMA page_count;
} {24}

do_execsql_test 1.1 {
  PRAGMA incremental_vacuum;
} {}

do_test 1.2 {
  db_save
  hexio_write test.db 36 00000019
  catchsql { PRAGMA incremental_vacuum; }
} {1 {database disk image is malformed}}

do_test 1.3 {
  set stmt [sqlite3_prepare_v2 db "PRAGMA incremental_vacuum" -1 dummy]
  sqlite3_step $stmt
} {SQLITE_CORRUPT}
do_test 1.4 { sqlite3_errcode db } {SQLITE_CORRUPT}
do_test 1.5 { sqlite3_errmsg db } {database disk image is malformed}
do_test 1.6 { sqlite3_finalize $stmt } {SQLITE_CORRUPT}
do_test 1.7 { sqlite3_errcode db } {SQLITE_CORRUPT}
do_test 1.8 { sqlite3_errmsg db } {database disk image is malformed}

do_test 1.9 {
  set stmt [sqlite3_prepare_v2 db "PRAGMA incremental_vacuum" -1 dummy]
  sqlite3_step $stmt
} {SQLITE_CORRUPT}
do_test 1.10 { sqlite3_errcode db } {SQLITE_CORRUPT}
do_test 1.11 { sqlite3_errmsg db } {database disk image is malformed}

do_test 1.12 {
  set stmt2 [sqlite3_prepare_v2 db "SELECT 1" -1 dummy]
  sqlite3_finalize $stmt2
} {SQLITE_OK}
do_test 1.13 { sqlite3_errcode db } {SQLITE_OK}
do_test 1.14 { sqlite3_errmsg db } {not an error}

do_test 1.15 { sqlite3_finalize $stmt } {SQLITE_CORRUPT}
do_test 1.16 { sqlite3_errcode db } {SQLITE_CORRUPT}
do_test 1.17 { sqlite3_errmsg db } {database disk image is malformed}

#-------------------------------------------------------------------------
#
reset_db

do_execsql_test 2.1 {
  PRAGMA auto_vacuum = 1;
  CREATE TABLE t1(a PRIMARY KEY, b);
  WITH data(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM data
  )
  INSERT INTO t1 SELECT i, randomblob(600) FROM data LIMIT 20;
  PRAGMA page_count;
} {24}

do_test 2.2 {
  db_save
  set fd [open test.db r+]
  chan truncate $fd [expr 22*1024]
  close $fd
  catchsql { PRAGMA incremental_vacuum; }
} {1 {database disk image is malformed}}

do_test 2.3 {
  set stmt [sqlite3_prepare_v2 db "PRAGMA auto_vacuum = INCREMENTAL" -1 dummy]
  sqlite3_step $stmt
} {SQLITE_CORRUPT}
do_test 2.4 { sqlite3_errcode db } {SQLITE_CORRUPT}
do_test 2.5 { sqlite3_errmsg db } {database disk image is malformed}
do_test 2.6 { sqlite3_finalize $stmt } {SQLITE_CORRUPT}
do_test 2.7 { sqlite3_errcode db } {SQLITE_CORRUPT}
do_test 2.8 { sqlite3_errmsg db } {database disk image is malformed}

do_test 2.9 {
  set stmt [sqlite3_prepare_v2 db "PRAGMA auto_vacuum = INCREMENTAL" -1 dummy]
  sqlite3_step $stmt
} {SQLITE_CORRUPT}
do_test 2.10 { sqlite3_errcode db } {SQLITE_CORRUPT}
do_test 2.11 { sqlite3_errmsg db } {database disk image is malformed}

do_test 2.12 {
  set stmt2 [sqlite3_prepare_v2 db "SELECT 1" -1 dummy]
  sqlite3_finalize $stmt2
} {SQLITE_OK}
do_test 2.13 { sqlite3_errcode db } {SQLITE_OK}
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

  }
  return $chan
}

# Execute a command in a child testfixture process, connected by two-way
# channel $chan. Return the result of the command, or an error message.
#
proc testfixture {chan cmd} {



  puts $chan $cmd
  puts $chan OVER

  set r ""
  while { 1 } {
    set line [gets $chan]
    if { $line == "OVER" } { 
      set res [lindex $r 1]
      if { [lindex $r 0] } { error $res }
      return $res
    }
    if {[eof $chan]} {
      return "ERROR: Child process hung up"
    }
    append r $line


























  }
}

proc testfixture_nb_cb {varname chan} {
  if {[eof $chan]} {
    append ::tfnb($chan) "ERROR: Child process hung up"
    set line "OVER"

  }
  return $chan
}

# Execute a command in a child testfixture process, connected by two-way
# channel $chan. Return the result of the command, or an error message.
#
proc testfixture {chan cmd args} {

  if {[llength $args] == 0} {
    fconfigure $chan -blocking 1
    puts $chan $cmd
    puts $chan OVER

    set r ""
    while { 1 } {
      set line [gets $chan]
      if { $line == "OVER" } { 
        set res [lindex $r 1]
        if { [lindex $r 0] } { error $res }
        return $res
      }
      if {[eof $chan]} {
        return "ERROR: Child process hung up"
      }
      append r $line
    }
    return $r
  } else {
    set ::tfnb($chan) ""
    fconfigure $chan -blocking 0 -buffering none
    puts $chan $cmd
    puts $chan OVER
    fileevent $chan readable [list testfixture_script_cb $chan [lindex $args 0]]
    return ""
  }
}

proc testfixture_script_cb {chan script} {
  if {[eof $chan]} {
    append ::tfnb($chan) "ERROR: Child process hung up"
    set line "OVER"
  } else {
    set line [gets $chan]
  }

  if { $line == "OVER" } {
    uplevel #0 $script [list [lindex $::tfnb($chan) 1]]
    unset ::tfnb($chan)
    fileevent $chan readable ""
  } else {
    append ::tfnb($chan) $line
  }
}

proc testfixture_nb_cb {varname chan} {
  if {[eof $chan]} {
    append ::tfnb($chan) "ERROR: Child process hung up"
    set line "OVER"

do_test malloc5-1.3 {
  # Call [sqlite3_release_memory] when there is exactly one unused page 
  # in the cache belonging to db2.
  #
  set ::pgalloc [sqlite3_release_memory]
  expr $::pgalloc > 0
} {1}


















do_test malloc5-1.4 {
  # Commit the transaction and open a new one. Read 1 page into the cache.
  # Because the page is not dirty, it is eligible for collection even
  # before the transaction is concluded.
  #
  execsql {
    COMMIT;
    BEGIN;
    SELECT * FROM abc;
  }
  sqlite3_release_memory
} $::pgalloc

do_test malloc5-1.5 {
  # Conclude the transaction opened in the previous [do_test] block. This
  # causes another page (page 1) to become eligible for recycling.
  #
  execsql { COMMIT }
  sqlite3_release_memory
} $::pgalloc

do_test malloc5-1.6 {
  # Manipulate the cache so that it contains two unused pages. One requires 
  # a journal-sync to free, the other does not.
  db2 close
  execsql {
    BEGIN;
    SELECT * FROM abc;
    CREATE TABLE def(d, e, f);
  }
  sqlite3_release_memory 500
} $::pgalloc

do_test malloc5-1.7 {
  # Database should not be locked this time. 
  sqlite3 db2 test.db
  catchsql { SELECT * FROM abc } db2
} {0 {}}
do_test malloc5-1.8 {

do_test malloc5-1.3 {
  # Call [sqlite3_release_memory] when there is exactly one unused page 
  # in the cache belonging to db2.
  #
  set ::pgalloc [sqlite3_release_memory]
  expr $::pgalloc > 0
} {1}

# The sizes of memory allocations from system malloc() might vary,
# depending on the memory allocator algorithms used.  The following
# routine is designed to support answers that fall within a range
# of values while also supplying easy-to-understand "expected" values
# when errors occur.
#
proc value_in_range {target x args} {
  set v [lindex $args 0]
  if {$v!=""} {
    if {$v<$target*$x} {return $v}
    if {$v>$target/$x} {return $v}
  }
  return "number between [expr {int($target*$x)}] and [expr {int($target/$x)}]"
}
set mrange 0.98   ;#  plus or minus 2%


do_test malloc5-1.4 {
  # Commit the transaction and open a new one. Read 1 page into the cache.
  # Because the page is not dirty, it is eligible for collection even
  # before the transaction is concluded.
  #
  execsql {
    COMMIT;
    BEGIN;
    SELECT * FROM abc;
  }
  value_in_range $::pgalloc $::mrange [sqlite3_release_memory]
} [value_in_range $::pgalloc $::mrange]

do_test malloc5-1.5 {
  # Conclude the transaction opened in the previous [do_test] block. This
  # causes another page (page 1) to become eligible for recycling.
  #
  execsql { COMMIT }
  value_in_range $::pgalloc $::mrange [sqlite3_release_memory]
} [value_in_range $::pgalloc $::mrange]

do_test malloc5-1.6 {
  # Manipulate the cache so that it contains two unused pages. One requires 
  # a journal-sync to free, the other does not.
  db2 close
  execsql {
    BEGIN;
    SELECT * FROM abc;
    CREATE TABLE def(d, e, f);
  }
  value_in_range $::pgalloc $::mrange [sqlite3_release_memory 500]
} [value_in_range $::pgalloc $::mrange]

do_test malloc5-1.7 {
  # Database should not be locked this time. 
  sqlite3 db2 test.db
  catchsql { SELECT * FROM abc } db2
} {0 {}}
do_test malloc5-1.8 {

  CREATE TABLE x1(a INTEGER PRIMARY KEY, b);
}
do_faultsim_test 7.2 -faults oom* -body {
  execsql { SELECT * FROM x1 WHERE a = (SELECT 1) }
} -test {
  faultsim_test_result [list 0 {}]
}





























finish_test

  CREATE TABLE x1(a INTEGER PRIMARY KEY, b);
}
do_faultsim_test 7.2 -faults oom* -body {
  execsql { SELECT * FROM x1 WHERE a = (SELECT 1) }
} -test {
  faultsim_test_result [list 0 {}]
}

reset_db

proc isqrt {i} { expr { int(sqrt($i)) } }
db func isqrt isqrt

do_execsql_test 8.0 {
  PRAGMA encoding = 'utf-16';
  CREATE TABLE x2(x TEXT, y TEXT);
  WITH data(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM data
  )
  INSERT INTO x2 SELECT isqrt(i), isqrt(i) FROM data LIMIT 400;
  CREATE INDEX x2x ON x2(x);
  CREATE INDEX x2y ON x2(y);
  ANALYZE;
  DELETE FROM x2;
}

proc str {a} { return $a }
db func str -deterministic str

do_faultsim_test 8 -faults oom* -body {
  execsql { SELECT * FROM x2 WHERE x = str('19') AND y = str('4') }
} -test {
  faultsim_test_result [list 0 {}]
}


finish_test

#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# This file implements tests for miscellanous features that were
# left out of other test files.
#
# $Id: misc1.test,v 1.42 2007/11/05 14:58:23 drh Exp $

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

# Mimic the SQLite 2 collation type NUMERIC.
db collate numeric numeric_collate
proc numeric_collate {lhs rhs} {
................................................................................
# presumably.
#
do_execsql_test misc1-20.1 {
  CREATE TABLE t0(x INTEGER DEFAULT(0==0) NOT NULL);
  REPLACE INTO t0(x) VALUES('');
  SELECT rowid, quote(x) FROM t0;
} {1 ''}










finish_test

#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# This file implements tests for miscellanous features that were
# left out of other test files.
#


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

# Mimic the SQLite 2 collation type NUMERIC.
db collate numeric numeric_collate
proc numeric_collate {lhs rhs} {
................................................................................
# presumably.
#
do_execsql_test misc1-20.1 {
  CREATE TABLE t0(x INTEGER DEFAULT(0==0) NOT NULL);
  REPLACE INTO t0(x) VALUES('');
  SELECT rowid, quote(x) FROM t0;
} {1 ''}

# 2015-03-22: NULL pointer dereference after a syntax error
#
do_catchsql_test misc1-21.1 {
  select''like''like''like#0;
} {1 {near "#0": syntax error}}
do_catchsql_test misc1-21.2 {
  VALUES(0,0x0MATCH#0;
} {1 {near ";": syntax error}}

finish_test

#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# The focus of this file is testing the CLI shell tool.
# These tests are specific to the .stats command.
#
# $Id: shell4.test,v 1.7 2009/07/17 16:54:48 shaneh Exp $
#

# Test plan:
#
#   shell4-1.*: Basic tests specific to the "stats" command.

#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
if {$tcl_platform(platform)=="windows"} {
  set CLI "sqlite3.exe"
} else {
  set CLI "./sqlite3"
................................................................................
  set res [catchcmd "test.db" {.stats ON
SELECT 1;
}]
  list [regexp {Memory Used} $res] \
       [regexp {Heap Usage} $res] \
       [regexp {Autoindex Inserts} $res]
} {1 1 1}





















finish_test

#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# The focus of this file is testing the CLI shell tool.
# These tests are specific to the .stats command.
#
# 2015-03-19:  Added tests for .trace


# Test plan:
#
#   shell4-1.*: Basic tests specific to the "stats" command.
#   shell4-2.*: Basic tests for ".trace"
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
if {$tcl_platform(platform)=="windows"} {
  set CLI "sqlite3.exe"
} else {
  set CLI "./sqlite3"
................................................................................
  set res [catchcmd "test.db" {.stats ON
SELECT 1;
}]
  list [regexp {Memory Used} $res] \
       [regexp {Heap Usage} $res] \
       [regexp {Autoindex Inserts} $res]
} {1 1 1}

do_test shell4-2.1 {
  catchcmd ":memory:" "CREATE TABLE t1(x);\n.trace"
} {1 {Usage: .trace FILE|off}}
do_test shell4-2.2 {
  catchcmd ":memory:" "CREATE TABLE t1(x);\n.trace off\n.trace off\n"
} {0 {}}
do_test shell4-2.3 {
  catchcmd ":memory:" ".trace stdout\n.trace\n.trace off\n.dump\n"
} {/^1 {PRAGMA.*Usage:.*}$/}
ifcapable trace {
do_test shell4-2.4 {
  catchcmd ":memory:" ".trace stdout\nCREATE TABLE t1(x);SELECT * FROM t1;"
} {0 {CREATE TABLE t1(x);
SELECT * FROM t1;}}
do_test shell4-2.5 {
  catchcmd ":memory:" "CREATE TABLE t1(x);\n.trace stdout\nSELECT * FROM t1;"
} {0 {SELECT * FROM t1;}}
}


finish_test

do_test tcl-1.14 {
  set v [catch {db eval} msg]
  lappend v $msg
} {1 {wrong # args: should be "db eval SQL ?ARRAY-NAME? ?SCRIPT?"}}
do_test tcl-1.15 {
  set v [catch {db function} msg]
  lappend v $msg
} {1 {wrong # args: should be "db function NAME [-argcount N] SCRIPT"}}
do_test tcl-1.16 {
  set v [catch {db last_insert_rowid xyz} msg]
  lappend v $msg
} {1 {wrong # args: should be "db last_insert_rowid "}}
do_test tcl-1.17 {
  set v [catch {db rekey} msg]
  lappend v $msg

do_test tcl-1.14 {
  set v [catch {db eval} msg]
  lappend v $msg
} {1 {wrong # args: should be "db eval SQL ?ARRAY-NAME? ?SCRIPT?"}}
do_test tcl-1.15 {
  set v [catch {db function} msg]
  lappend v $msg
} {1 {wrong # args: should be "db function NAME ?SWITCHES? SCRIPT"}}
do_test tcl-1.16 {
  set v [catch {db last_insert_rowid xyz} msg]
  lappend v $msg
} {1 {wrong # args: should be "db last_insert_rowid "}}
do_test tcl-1.17 {
  set v [catch {db rekey} msg]
  lappend v $msg

  } {SQLITE_DONE}
  
  do_test 22.4.2 {
    sqlite3_finalize $stmt
  } {SQLITE_OK}
}























































finish_test

  } {SQLITE_DONE}
  
  do_test 22.4.2 {
    sqlite3_finalize $stmt
  } {SQLITE_OK}
}


#-------------------------------------------------------------------------
# The following tests verify that a DROP TABLE command on a virtual
# table does not cause other operations to crash.
#
#   23.1: Dropping a vtab while a SELECT is running on it.
#
#   23.2: Dropping a vtab while a SELECT that will, but has not yet,
#         open a cursor on the vtab, is running. In this case the
#         DROP TABLE succeeds and the SELECT hits an error.
#   
#   23.3: Dropping a vtab from within a user-defined-function callback
#         in the middle of an "INSERT INTO vtab SELECT ..." statement.
#
reset_db
load_static_extension db wholenumber
load_static_extension db eval
register_echo_module db

do_test 23.1 {
  execsql { CREATE VIRTUAL TABLE t1 USING wholenumber }
  set res ""
  db eval { SELECT value FROM t1 WHERE value<10 } {
    if {$value == 5} {
      set res [catchsql { DROP TABLE t1 }]
    }
  }
  set res
} {1 {database table is locked}}

do_test 23.2 {
  execsql { 
    CREATE TABLE t2(value);
    INSERT INTO t2 VALUES(1), (2), (3);
  }

  set res2 [list [catch {
    db eval {
      SELECT value FROM t2 UNION ALL 
      SELECT value FROM t1 WHERE value<10
    } {
      if {$value == 2} { set res1 [catchsql { DROP TABLE t1 }] }
    }
  } msg] $msg]
  list $res1 $res2
} {{0 {}} {1 {database table is locked}}}

do_test 23.3.1 {
  execsql { CREATE VIRTUAL TABLE t1e USING echo(t2) }
  execsql { INSERT INTO t1e SELECT 4 }
  catchsql { INSERT INTO t1e SELECT eval('DROP TABLE t1e') }
} {1 {database table is locked}}
do_execsql_test 23.3.2 { SELECT * FROM t1e } {1 2 3 4}

finish_test

#    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.
#
# $Id: vtab2.test,v 1.9 2008/10/13 10:37:50 danielk1977 Exp $

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


ifcapable !vtab||!schema_pragmas {
  finish_test
  return
}

register_schema_module [sqlite3_connection_pointer db]
................................................................................
    UPDATE fkey 
    SET to_col = (SELECT name FROM v_col WHERE tablename = 't1' AND pk);
  }
} {}
do_test vtab2-4.5 {
  execsql { SELECT * FROM fkey }
} {t1 a}




















finish_test

#    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.
#


set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix vtab2

ifcapable !vtab||!schema_pragmas {
  finish_test
  return
}

register_schema_module [sqlite3_connection_pointer db]
................................................................................
    UPDATE fkey 
    SET to_col = (SELECT name FROM v_col WHERE tablename = 't1' AND pk);
  }
} {}
do_test vtab2-4.5 {
  execsql { SELECT * FROM fkey }
} {t1 a}

#-------------------------------------------------------------------------
#
ifcapable fts3 {
  reset_db
  do_execsql_test 5.1 {
    PRAGMA encoding='UTF16';
  }

  do_test 5.2 {
    sqlite3_exec_hex db { CREATE VIRTUAL TABLE %C8 USING fts3 }
  } {0 {}}

  do_test 5.3 {
    sqlite3_exec_hex db { CREATE VIRTUAL TABLE %C9 USING s }
  } {/1 {malformed database schema.* already exists}/}
}



finish_test

# 2015 Mar 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.
#
#***********************************************************************
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
source $testdir/wal_common.tcl

ifcapable !wal {finish_test ; return }
if {$::tcl_platform(platform)!="unix"} { finish_test ; return }
set testprefix walblock

catch { db close }
testvfs tvfs -fullshm 1
foreach f [glob test.db*] { forcedelete $f }

sqlite3 db test.db -vfs tvfs
do_execsql_test 1.1.0 {
  CREATE TABLE t1(x, y);
  INSERT INTO t1 VALUES(1, 2);
  INSERT INTO t1 VALUES(3, 4);
  INSERT INTO t1 VALUES(5, 6);
  PRAGMA journal_mode = wal;
  INSERT INTO t1 VALUES(7, 8);
} {wal}

do_test 1.1.1 { 
  lsort [glob test.db*] 
} {test.db test.db-shm test.db-wal}

do_test 1.1.2 { 
  set C [launch_testfixture]
  testfixture $C {
    sqlite3 db test.db
    db eval { SELECT * FROM t1 }
  }
} {1 2 3 4 5 6 7 8}

do_test 1.1.3 { 
  set ::out [list]
  testfixture $C {
    db eval { SELECT * FROM t1 }
  } [list set ::out]
  set ::out
} {}

do_test 1.1.4 { 
  vwait ::out
  set ::out
} {1 2 3 4 5 6 7 8}

#
# Test that if a read client cannot read the wal-index header because a
# write client is in the middle of updating it, the reader blocks until
# the writer finishes.
#
#   1. Open a write transaction using client [db] in this process.
#
#   2. Attempt to commit the write transaction. Intercept the xShmBarrier()
#      call made by the writer between updating the two copies of the
#      wal-index header.
#
#   3. Within the xShmBarrier() callback, make an asynchronous request to
#      the other process to read from the database. It should block, as it
#      cannot get read the wal-index header.
#
#   4. Still in xShmBarrier(), wait for 5 seconds. Check that the other
#      process has not answered the request.
#
#   5: Finish committing the transaction. Then wait for 0.5 seconds more.
#      Ensure that the second process has by this stage read the database
#      and that the snapshot it read included the transaction committed in
#      step (4).
#
do_execsql_test 1.2.1 {
  BEGIN;
    INSERT INTO t1 VALUES(9, 10);
} {}

tvfs script barrier_callback
tvfs filter xShmBarrier
proc barrier_callback {method args} {
  set ::out ""
  testfixture $::C { db eval { SELECT * FROM t1 } } {set ::out}

  do_test "1.2.2.(blocking 10 seconds)" { 
    set ::continue 0
    after 10000 {set ::continue 1}
    vwait ::continue
    set ::out 
  } {}
}

execsql COMMIT

do_test "1.2.3.(blocking 0.5 seconds)" { 
  set ::continue 0
  after 500 {set ::continue 1}
  vwait ::continue
  set ::out 
} {1 2 3 4 5 6 7 8 9 10}


finish_test

do_execsql_test 12.1 {
WITH RECURSIVE
  t1(x) AS (VALUES(2) UNION ALL SELECT x+2 FROM t1 WHERE x<20),
  t2(y) AS (VALUES(3) UNION ALL SELECT y+3 FROM t2 WHERE y<20)
SELECT x FROM t1 EXCEPT SELECT y FROM t2 ORDER BY 1;
} {2 4 8 10 14 16 20}

















finish_test

do_execsql_test 12.1 {
WITH RECURSIVE
  t1(x) AS (VALUES(2) UNION ALL SELECT x+2 FROM t1 WHERE x<20),
  t2(y) AS (VALUES(3) UNION ALL SELECT y+3 FROM t2 WHERE y<20)
SELECT x FROM t1 EXCEPT SELECT y FROM t2 ORDER BY 1;
} {2 4 8 10 14 16 20}

# 2015-03-21
# Column wildcards on the LHS of a recursive table expression
#
do_catchsql_test 13.1 {
  WITH RECURSIVE c(i) AS (SELECT * UNION ALL SELECT i+1 FROM c WHERE i<10)
  SELECT i FROM c;
} {1 {no tables specified}}
do_catchsql_test 13.2 {
  WITH RECURSIVE c(i) AS (SELECT 5,* UNION ALL SELECT i+1 FROM c WHERE i<10)
  SELECT i FROM c;
} {1 {no tables specified}}
do_catchsql_test 13.3 {
  WITH RECURSIVE c(i,j) AS (SELECT 5,* UNION ALL SELECT i+1,11 FROM c WHERE i<10)
  SELECT i FROM c;
} {1 {table c has 1 values for 2 columns}}

finish_test

} {x123y}
do_execsql_test without_rowid6-130 {
  SELECT c FROM t1 ORDER BY a DESC LIMIT 5;
} {x1000y x999y x998y x997y x996y}
do_execsql_test without_rowid6-140 {
  SELECT c FROM t1 ORDER BY b LIMIT 5;
} {x1y x2y x3y x4y x5y}














































































finish_test

} {x123y}
do_execsql_test without_rowid6-130 {
  SELECT c FROM t1 ORDER BY a DESC LIMIT 5;
} {x1000y x999y x998y x997y x996y}
do_execsql_test without_rowid6-140 {
  SELECT c FROM t1 ORDER BY b LIMIT 5;
} {x1y x2y x3y x4y x5y}

# Column t1.b starts out as a unique index, but that index is
# subsequently converted into a PRIMARY KEY.
#
do_execsql_test without_rowid6-200 {
  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(
    a UNIQUE,
    b UNIQUE,
    c UNIQUE,
    PRIMARY KEY(b)
  ) WITHOUT ROWID;
  INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {4 1}
do_execsql_test without_rowid6-210 {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {/SEARCH TABLE t1 USING PRIMARY KEY .b>../}
do_execsql_test without_rowid6-220 {
  PRAGMA index_list(t1);
} {/sqlite_autoindex_t1_2 1 pk/}

do_execsql_test without_rowid6-300 {
  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(
    a UNIQUE,
    b PRIMARY KEY,
    c UNIQUE,
    UNIQUE(b)
  ) WITHOUT ROWID;
  INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {4 1}
do_execsql_test without_rowid6-310 {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {/SEARCH TABLE t1 USING PRIMARY KEY .b>../}
do_execsql_test without_rowid6-320 {
  PRAGMA index_list(t1);
} {/sqlite_autoindex_t1_2 1 pk/}

do_execsql_test without_rowid6-400 {
  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(
    a UNIQUE,
    b UNIQUE PRIMARY KEY,
    c UNIQUE
  ) WITHOUT ROWID;
  INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {4 1}
do_execsql_test without_rowid6-410 {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {/SEARCH TABLE t1 USING PRIMARY KEY .b>../}
do_execsql_test without_rowid6-420 {
  PRAGMA index_list(t1);
} {/sqlite_autoindex_t1_2 1 pk/}

do_execsql_test without_rowid6-500 {
  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(a,b,c,
    UNIQUE(b,c),
    PRIMARY KEY(b,c)
  ) WITHOUT ROWID;
  INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {4 1}
do_execsql_test without_rowid6-510 {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {/SEARCH TABLE t1 USING PRIMARY KEY .b>../}
do_execsql_test without_rowid6-520 {
  PRAGMA index_list(t1);
} {/sqlite_autoindex_t1_1 1 pk/}


finish_test

REM SET __ECHO=ECHO
REM SET __ECHO2=ECHO
REM SET __ECHO3=ECHO
IF NOT DEFINED _AECHO (SET _AECHO=REM)
IF NOT DEFINED _CECHO (SET _CECHO=REM)
IF NOT DEFINED _VECHO (SET _VECHO=REM)




%_AECHO% Running %0 %*

REM SET DFLAGS=/L

%_VECHO% DFlags = '%DFLAGS%'

SET FFLAGS=/V /F /G /H /I /R /Y /Z
................................................................................
      REM NOTE: When preparing the debug build, set the DEBUG and MEMDEBUG
      REM       environment variables to be picked up by the MSVC makefile
      REM       itself.
      REM
      %_AECHO% Building the %%B configuration for platform %%P with name %%D...

      IF /I "%%B" == "Debug" (






        SET DEBUG=2





        SET MEMDEBUG=1
      ) ELSE (
        CALL :fn_UnsetVariable DEBUG
        CALL :fn_UnsetVariable MEMDEBUG
      )

      REM
................................................................................
          IF ERRORLEVEL 1 (
            ECHO Failed to clean for platform %%P.
            GOTO errors
          )
        ) ELSE (
          REM
          REM NOTE: Even when the cleaning step has been disabled, we still
          REM       need to remove the build output for the files we are
          REM       specifically wanting to build for each platform.
          REM
          %_AECHO% Cleaning final output files only...
          %__ECHO% DEL /Q *.lo sqlite3.dll sqlite3.lib sqlite3.pdb
        )

        REM
        REM NOTE: Call NMAKE with the MSVC makefile to build the "sqlite3.dll"
        REM       binary.  The x86 compiler will be used to compile the native
        REM       command line tools needed during the build process itself.
        REM       Also, disable looking for and/or linking to the native Tcl
................................................................................
          %__ECHO% XCOPY sqlite3.pdb "%BINARYDIRECTORY%\%%B\%%D\" %FFLAGS% %DFLAGS%

          IF ERRORLEVEL 1 (
            ECHO Failed to copy "sqlite3.pdb" to "%BINARYDIRECTORY%\%%B\%%D\".
            GOTO errors
          )
        )


























































      )
    )
  )

  REM
  REM NOTE: Handle any errors generated during the nested command shell.
  REM

REM SET __ECHO=ECHO
REM SET __ECHO2=ECHO
REM SET __ECHO3=ECHO
IF NOT DEFINED _AECHO (SET _AECHO=REM)
IF NOT DEFINED _CECHO (SET _CECHO=REM)
IF NOT DEFINED _VECHO (SET _VECHO=REM)

SET REDIRECT=^>
IF DEFINED __ECHO SET REDIRECT=^^^>

%_AECHO% Running %0 %*

REM SET DFLAGS=/L

%_VECHO% DFlags = '%DFLAGS%'

SET FFLAGS=/V /F /G /H /I /R /Y /Z
................................................................................
      REM NOTE: When preparing the debug build, set the DEBUG and MEMDEBUG
      REM       environment variables to be picked up by the MSVC makefile
      REM       itself.
      REM
      %_AECHO% Building the %%B configuration for platform %%P with name %%D...

      IF /I "%%B" == "Debug" (
        REM
        REM NOTE: Using this level for the DEBUG environment variable should
        REM       disable all compiler optimizations and prevent use of the
        REM       NDEBUG define.  Additionally, both SQLITE_ENABLE_API_ARMOR
        REM       and SQLITE_DEBUG defines should be enabled.
        REM
        SET DEBUG=3

        REM
        REM NOTE: Setting this to non-zero should enable the SQLITE_MEMDEBUG
        REM       define.
        REM
        SET MEMDEBUG=1
      ) ELSE (
        CALL :fn_UnsetVariable DEBUG
        CALL :fn_UnsetVariable MEMDEBUG
      )

      REM
................................................................................
          IF ERRORLEVEL 1 (
            ECHO Failed to clean for platform %%P.
            GOTO errors
          )
        ) ELSE (
          REM
          REM NOTE: Even when the cleaning step has been disabled, we still
          REM       need to remove the build output for all the files we are
          REM       specifically wanting to build for each platform.
          REM
          %_AECHO% Cleaning final core library output files only...
          %__ECHO% DEL /Q *.lo sqlite3.dll sqlite3.lib sqlite3.pdb 2%REDIRECT% NUL
        )

        REM
        REM NOTE: Call NMAKE with the MSVC makefile to build the "sqlite3.dll"
        REM       binary.  The x86 compiler will be used to compile the native
        REM       command line tools needed during the build process itself.
        REM       Also, disable looking for and/or linking to the native Tcl
................................................................................
          %__ECHO% XCOPY sqlite3.pdb "%BINARYDIRECTORY%\%%B\%%D\" %FFLAGS% %DFLAGS%

          IF ERRORLEVEL 1 (
            ECHO Failed to copy "sqlite3.pdb" to "%BINARYDIRECTORY%\%%B\%%D\".
            GOTO errors
          )
        )

        REM
        REM NOTE: If requested, also build the shell executable.
        REM
        IF DEFINED BUILD_ALL_SHELL (
          REM
          REM NOTE: If necessary, make sure any previous build output for the
          REM       shell executable is deleted.
          REM
          IF DEFINED NOCLEAN (
            REM
            REM NOTE: Even when the cleaning step has been disabled, we still
            REM       need to remove the build output for all the files we are
            REM       specifically wanting to build for each platform.
            REM
            %_AECHO% Cleaning final shell executable output files only...
            %__ECHO% DEL /Q sqlite3.exe sqlite3sh.pdb 2%REDIRECT% NUL
          )

          REM
          REM NOTE: Call NMAKE with the MSVC makefile to build the "sqlite3.exe"
          REM       binary.  The x86 compiler will be used to compile the native
          REM       command line tools needed during the build process itself.
          REM       Also, disable looking for and/or linking to the native Tcl
          REM       runtime library.
          REM
          %__ECHO% %NMAKE_CMD% sqlite3.exe XCOMPILE=1 USE_NATIVE_LIBPATHS=1 NO_TCL=1 %NMAKE_ARGS%

          IF ERRORLEVEL 1 (
            ECHO Failed to build %%B "sqlite3.exe" for platform %%P.
            GOTO errors
          )

          REM
          REM NOTE: Copy the "sqlite3.exe" file to the appropriate directory
          REM       for the build and platform beneath the binary directory.
          REM
          %__ECHO% XCOPY sqlite3.exe "%BINARYDIRECTORY%\%%B\%%D\" %FFLAGS% %DFLAGS%

          IF ERRORLEVEL 1 (
            ECHO Failed to copy "sqlite3.exe" to "%BINARYDIRECTORY%\%%B\%%D\".
            GOTO errors
          )

          REM
          REM NOTE: Copy the "sqlite3sh.pdb" file to the appropriate directory
          REM       for the build and platform beneath the binary directory
          REM       unless we are prevented from doing so.
          REM
          IF NOT DEFINED NOSYMBOLS (
            %__ECHO% XCOPY sqlite3sh.pdb "%BINARYDIRECTORY%\%%B\%%D\" %FFLAGS% %DFLAGS%

            IF ERRORLEVEL 1 (
              ECHO Failed to copy "sqlite3sh.pdb" to "%BINARYDIRECTORY%\%%B\%%D\".
              GOTO errors
            )
          )
        )
      )
    )
  )

  REM
  REM NOTE: Handle any errors generated during the nested command shell.
  REM

static void decodeCell(
  unsigned char *a,       /* Page content (without the page-1 header) */
  unsigned pgno,          /* Page number */
  int iCell,              /* Cell index */
  int szPgHdr,            /* Size of the page header.  0 or 100 */
  int ofst                /* Cell begins at a[ofst] */
){
  int i, j;
  int leftChild;
  i64 k;
  i64 nPayload;
  i64 rowid;
  i64 nHdr;
  i64 iType;
  i64 nLocal;

static void decodeCell(
  unsigned char *a,       /* Page content (without the page-1 header) */
  unsigned pgno,          /* Page number */
  int iCell,              /* Cell index */
  int szPgHdr,            /* Size of the page header.  0 or 100 */
  int ofst                /* Cell begins at a[ofst] */
){
  int i, j = 0;
  int leftChild;
  i64 k;
  i64 nPayload;
  i64 rowid;
  i64 nHdr;
  i64 iType;
  i64 nLocal;