SQLite

#
BCC = cl.exe -O2

# C Compile 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.)
#
TCC = cl.exe -W3 -O2 -DSQLITE_OS_WIN=1 -I. -I$(TOP)\src -fp:precise

# The mksqlite3c.tcl and mksqlite3h.tcl scripts will pull in 
# any extension header files by default.  For non-amalgamation
# builds, we need to make sure the compiler can find these.
#
!IF $(USE_AMALGAMATION)==0
TCC = $(TCC) -I$(TOP)\ext\fts3

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

# libtool compile/link
LTCOMPILE = $(TCC) -Fo$@
LTLIB = lib.exe
LTLINK = $(TCC) -Fe$@

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

# nawk compatible awk.
NAWK = .\gawk.exe

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

	$(LTLIB) -OUT:$@ $(LIBOBJ) $(TLIBS)

libtclsqlite3.lib:	tclsqlite.lo libsqlite3.lib
	$(LTLIB) /LIBPATH:$(TCLLIBDIR) -OUT:$@ tclsqlite.lo libsqlite3.lib $(LIBTCL:tcl=tclstub) $(TLIBS)

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

	$(LTCOMPILE) -DUSE_TCL_STUBS=1 -DBUILD_sqlite -I$(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
	$(LTLINK) tclsqlite-shell.lo \
		/link $(LTLINKOPTS) /LIBPATH:$(TCLLIBDIR) libsqlite3.lib $(LIBTCL)

# Rules to build opcodes.c and opcodes.h
#
opcodes.c:	opcodes.h $(TOP)\mkopcodec.awk
	$(NAWK) "/#define OP_/ { print }" opcodes.h | sort /+45 | $(NAWK) -f $(TOP)\mkopcodec.awk >opcodes.c

opcodes.h:	parse.h $(TOP)\src\vdbe.c $(TOP)\mkopcodeh.awk

!ELSE
TESTFIXTURE_SRC = $(TESTSRC) $(TOP)\src\tclsqlite.c $(TESTFIXTURE_SRC1)
!ENDIF

testfixture.exe:	$(TESTFIXTURE_SRC) $(HDR)
	$(LTLINK) -DSQLITE_NO_SYNC=1 $(TESTFIXTURE_FLAGS) \
		-DBUILD_sqlite -I$(TCLINCDIR) \
		$(TESTFIXTURE_SRC) \
		/link $(LTLINKOPTS) /LIBPATH:$(TCLLIBDIR) $(LIBTCL) $(TLIBS)

fulltest:	testfixture.exe sqlite3.exe
	.\testfixture.exe $(TOP)\test\all.test

soaktest:	testfixture.exe sqlite3.exe
	.\testfixture.exe $(TOP)\test\all.test -soak=1

test:	testfixture.exe sqlite3.exe
	.\testfixture.exe $(TOP)\test\veryquick.test

spaceanal_tcl.h:	$(TOP)\tool\spaceanal.tcl
	$(NAWK) "/^[^#]/ { gsub(/\\/,\"\\\\\\\\\");gsub(/\\\"/,\"\\\\\\\"\");gsub(/^/,\"\\\"\");gsub(/$$/,\"\\n\\\"\");print }" \
		$(TOP)\tool\spaceanal.tcl >spaceanal_tcl.h

sqlite3_analyzer.exe:	$(TESTFIXTURE_SRC) spaceanal_tcl.h
	$(LTLINK) -DTCLSH=2 -DSQLITE_TEST=1 -DSQLITE_CRASH_TEST=1 \
		-DSQLITE_SERVER=1 -DSQLITE_PRIVATE="" -DSQLITE_CORE \
		-DBUILD_sqlite -I$(TCLINCDIR) \
		$(TESTFIXTURE_SRC) \
		/link $(LTLINKOPTS) /LIBPATH:$(TCLLIBDIR) $(LIBTCL) $(TLIBS)

clean:
	del /Q *.lo *.lib *.obj sqlite3.exe libsqlite3.lib
	del /Q sqlite3.h opcodes.c opcodes.h
	del /Q lemon.exe lempar.c parse.*
	del /Q mkkeywordhash.exe keywordhash.h
	-rmdir /Q/S tsrc

#undef HAVE_UINTPTR_T

/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H

/* Define to 1 if you have the `usleep' function. */
#undef HAVE_USLEEP

/* Define to 1 if you have the utime() library function. */
#undef HAVE_UTIME

/* Define to the sub-directory in which libtool stores uninstalled libraries.
   */
#undef LT_OBJDIR

/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT

# Figure out whether or not we have these functions
#






for ac_func in usleep fdatasync localtime_r gmtime_r localtime_s utime
do
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
{ $as_echo "$as_me:$LINENO: checking for $ac_func" >&5
$as_echo_n "checking for $ac_func... " >&6; }
if { as_var=$as_ac_var; eval "test \"\${$as_var+set}\" = set"; }; then
  $as_echo_n "(cached) " >&6
else

  enableval=$enable_load_extension; use_loadextension=$enableval
else
  use_loadextension=no
fi

if test "${use_loadextension}" = "yes" ; then
  OPT_FEATURE_FLAGS=""
  { $as_echo "$as_me:$LINENO: checking for library containing dlopen" >&5
$as_echo_n "checking for library containing dlopen... " >&6; }
if test "${ac_cv_search_dlopen+set}" = set; then
  $as_echo_n "(cached) " >&6
else
  ac_func_search_save_LIBS=$LIBS
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */

/* Override any GCC internal prototype to avoid an error.
   Use char because int might match the return type of a GCC
   builtin and then its argument prototype would still apply.  */
#ifdef __cplusplus
extern "C"
#endif
char dlopen ();
int
main ()
{
return dlopen ();
  ;
  return 0;
}
_ACEOF
for ac_lib in '' dl; do
  if test -z "$ac_lib"; then
    ac_res="none required"
  else
    ac_res=-l$ac_lib
    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
  fi
  rm -f conftest.$ac_objext conftest$ac_exeext
if { (ac_try="$ac_link"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_link") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest$ac_exeext && {
	 test "$cross_compiling" = yes ||
	 $as_test_x conftest$ac_exeext
       }; then
  ac_cv_search_dlopen=$ac_res
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5


fi

rm -rf conftest.dSYM
rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
      conftest$ac_exeext
  if test "${ac_cv_search_dlopen+set}" = set; then
  break
fi
done
if test "${ac_cv_search_dlopen+set}" = set; then
  :
else
  ac_cv_search_dlopen=no
fi
rm conftest.$ac_ext
LIBS=$ac_func_search_save_LIBS
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_search_dlopen" >&5
$as_echo "$ac_cv_search_dlopen" >&6; }
ac_res=$ac_cv_search_dlopen
if test "$ac_res" != no; then
  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"

fi

else
  OPT_FEATURE_FLAGS="-DSQLITE_OMIT_LOAD_EXTENSION=1"
fi

#########
# attempt to duplicate any OMITS and ENABLES into the $(OPT_FEATURE_FLAGS) parameter
for option in $CFLAGS $CPPFLAGS

#########
# Check for needed/wanted headers
AC_CHECK_HEADERS([sys/types.h stdlib.h stdint.h inttypes.h])

#########
# Figure out whether or not we have these functions
#
AC_CHECK_FUNCS([usleep fdatasync localtime_r gmtime_r localtime_s utime])

#########
# By default, we use the amalgamation (this may be changed below...)
#
USE_AMALGAMATION=1

#########

#########
# See whether we should allow loadable extensions
AC_ARG_ENABLE(load-extension, AC_HELP_STRING([--enable-load-extension],
      [Enable loading of external extensions]),
      [use_loadextension=$enableval],[use_loadextension=no])
if test "${use_loadextension}" = "yes" ; then
  OPT_FEATURE_FLAGS=""
  AC_SEARCH_LIBS(dlopen, dl)
else
  OPT_FEATURE_FLAGS="-DSQLITE_OMIT_LOAD_EXTENSION=1"
fi

#########
# attempt to duplicate any OMITS and ENABLES into the $(OPT_FEATURE_FLAGS) parameter
for option in $CFLAGS $CPPFLAGS

  p->zDb = zCsr;
  memcpy(zCsr, argv[1], nDb);
  zCsr += nDb;

  /* Fill in the azColumn array */
  for(iCol=0; iCol<nCol; iCol++){
    char *z; 
    int n = 0;
    z = (char *)sqlite3Fts3NextToken(aCol[iCol], &n);
    memcpy(zCsr, z, n);
    zCsr[n] = '\0';
    sqlite3Fts3Dequote(zCsr);
    p->azColumn[iCol] = zCsr;
    zCsr += n+1;
    assert( zCsr <= &((char *)p)[nByte] );

  return rc;
}

/*
** Implementation of xBegin() method. This is a no-op.
*/
static int fts3BeginMethod(sqlite3_vtab *pVtab){

  TESTONLY( Fts3Table *p = (Fts3Table*)pVtab );
  UNUSED_PARAMETER(pVtab);
  assert( p->pSegments==0 );
  assert( p->nPendingData==0 );
  assert( p->inTransaction!=1 );
  TESTONLY( p->inTransaction = 1 );
  TESTONLY( p->mxSavepoint = -1; );
  return SQLITE_OK;
}

/*
** Implementation of xCommit() method. This is a no-op. The contents of
** the pending-terms hash-table have already been flushed into the database
** by fts3SyncMethod().
*/
static int fts3CommitMethod(sqlite3_vtab *pVtab){

  TESTONLY( Fts3Table *p = (Fts3Table*)pVtab );
  UNUSED_PARAMETER(pVtab);
  assert( p->nPendingData==0 );
  assert( p->inTransaction!=0 );
  assert( p->pSegments==0 );
  TESTONLY( p->inTransaction = 0 );
  TESTONLY( p->mxSavepoint = -1; );
  return SQLITE_OK;
}

  Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
  int rc = SQLITE_OK;
  int iCol;

  if( pExpr->bDeferred && pExpr->pParent->eType!=FTSQUERY_NEAR ){
    assert( pCsr->nDoc>0 );
    for(iCol=0; iCol<pTab->nColumn; iCol++){
      aiOut[iCol*3 + 1] = (u32)pCsr->nDoc;
      aiOut[iCol*3 + 2] = (u32)pCsr->nDoc;
    }
  }else{
    rc = fts3EvalGatherStats(pCsr, pExpr);
    if( rc==SQLITE_OK ){
      assert( pExpr->aMI );
      for(iCol=0; iCol<pTab->nColumn; iCol++){
        aiOut[iCol*3 + 1] = pExpr->aMI[iCol*3 + 1];

  sqlite3_int64 iPrevId;          /* Previous id read from aDoclist */
  char *pNextId;                  /* Pointer into the body of aDoclist */
  char *aDoclist;                 /* List of docids for full-text queries */
  int nDoclist;                   /* Size of buffer at aDoclist */
  u8 bDesc;                       /* True to sort in descending order */
  int eEvalmode;                  /* An FTS3_EVAL_XX constant */
  int nRowAvg;                    /* Average size of database rows, in pages */
  sqlite3_int64 nDoc;             /* Documents in table */

  int isMatchinfoNeeded;          /* True when aMatchinfo[] needs filling in */
  u32 *aMatchinfo;                /* Information about most recent match */
  int nMatchinfo;                 /* Number of elements in aMatchinfo[] */
  char *zMatchinfo;               /* Matchinfo specification */
};

      case FTS3_MATCHINFO_NCOL:
        if( bGlobal ) pInfo->aMatchinfo[0] = pInfo->nCol;
        break;
        
      case FTS3_MATCHINFO_NDOC:
        if( bGlobal ){
          sqlite3_int64 nDoc = 0;
          rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, 0);
          pInfo->aMatchinfo[0] = (u32)nDoc;
        }
        break;

      case FTS3_MATCHINFO_AVGLENGTH: 
        if( bGlobal ){

#include "fts3Int.h"
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
#ifdef SQLITE_TEST

#include <string.h>
#include <assert.h>
#include <stdlib.h>

typedef struct Fts3termTable Fts3termTable;
typedef struct Fts3termCursor Fts3termCursor;

struct Fts3termTable {
  sqlite3_vtab base;              /* Base class used by SQLite core */
  int iIndex;                     /* Index for Fts3Table.aIndex[] */

  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *CONST objv[]
){
#ifdef SQLITE_ENABLE_FTS3
  extern int test_fts3_node_chunksize;
  extern int test_fts3_node_chunk_threshold;


  Tcl_Obj *pRet;

  if( objc!=1 && objc!=3 ){
    Tcl_WrongNumArgs(interp, 1, objv, "?CHUNKSIZE THRESHOLD?");
    return TCL_ERROR;
  }

  Fts3Hash *pHash,                /* Tokenizer hash table */
  const char *zArg,               /* Tokenizer name */
  sqlite3_tokenizer **ppTok,      /* OUT: Tokenizer (if applicable) */
  char **pzErr                    /* OUT: Set to malloced error message */
){
  int rc;
  char *z = (char *)zArg;
  int n = 0;
  char *zCopy;
  char *zEnd;                     /* Pointer to nul-term of zCopy */
  sqlite3_tokenizer_module *m;

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

  assert( pgsz>0 );

  for(ii=0; rc==SQLITE_OK && ii<pMsr->nSegment; ii++){
    Fts3SegReader *pReader = pMsr->apSegment[ii];
    if( !fts3SegReaderIsPending(pReader) 
     && !fts3SegReaderIsRootOnly(pReader) 
    ){
      sqlite3_int64 jj;
      for(jj=pReader->iStartBlock; jj<=pReader->iLeafEndBlock; jj++){
        int nBlob;
        rc = sqlite3Fts3ReadBlock(p, jj, 0, &nBlob, 0);
        if( rc!=SQLITE_OK ) break;
        if( (nBlob+35)>pgsz ){
          nOvfl += (nBlob + 34)/pgsz;
        }

/*
** Return the N-dimensional volumn of the cell stored in *p.
*/
static float cellArea(Rtree *pRtree, RtreeCell *p){
  float area = 1.0;
  int ii;
  for(ii=0; ii<(pRtree->nDim*2); ii+=2){
    area = (float)(area * (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii])));
  }
  return area;
}

/*
** Return the margin length of cell p. The margin length is the sum
** of the objects size in each dimension.
*/
static float cellMargin(Rtree *pRtree, RtreeCell *p){
  float margin = 0.0;
  int ii;
  for(ii=0; ii<(pRtree->nDim*2); ii+=2){
    margin += (float)(DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]));
  }
  return margin;
}

/*
** Store the union of cells p1 and p2 in p1.
*/

        x1 = MAX(DCOORD(p->aCoord[jj]), DCOORD(aCell[ii].aCoord[jj]));
        x2 = MIN(DCOORD(p->aCoord[jj+1]), DCOORD(aCell[ii].aCoord[jj+1]));

        if( x2<x1 ){
          o = 0.0;
          break;
        }else{
          o = o * (float)(x2-x1);
        }
      }
      overlap += o;
    }
  }
  return overlap;
}
#endif

#if VARIANT_RSTARTREE_CHOOSESUBTREE
static float cellOverlapEnlargement(
  Rtree *pRtree, 
  RtreeCell *p, 
  RtreeCell *pInsert, 
  RtreeCell *aCell, 
  int nCell, 
  int iExclude
){
  double before;
  double after;
  before = cellOverlap(pRtree, p, aCell, nCell, iExclude);
  cellUnion(pRtree, p, pInsert);
  after = cellOverlap(pRtree, p, aCell, nCell, iExclude);
  return (float)(after-before);
}
#endif


/*
** This function implements the ChooseLeaf algorithm from Gutman[84].
** ChooseSubTree in r*tree terminology.

  int rc;
  int ii;
  RtreeNode *pNode;
  rc = nodeAcquire(pRtree, 1, 0, &pNode);

  for(ii=0; rc==SQLITE_OK && ii<(pRtree->iDepth-iHeight); ii++){
    int iCell;
    sqlite3_int64 iBest = 0;

    float fMinGrowth = 0.0;
    float fMinArea = 0.0;
    float fMinOverlap = 0.0;

    int nCell = NCELL(pNode);
    RtreeCell cell;
    RtreeNode *pChild;

    RtreeCell *aCell = 0;

  RtreeCell *pBboxLeft,
  RtreeCell *pBboxRight
){
  int **aaSorted;
  int *aSpare;
  int ii;

  int iBestDim = 0;
  int iBestSplit = 0;
  float fBestMargin = 0.0;

  int nByte = (pRtree->nDim+1)*(sizeof(int*)+nCell*sizeof(int));

  aaSorted = (int **)sqlite3_malloc(nByte);
  if( !aaSorted ){
    return SQLITE_NOMEM;
  }

      aaSorted[ii][jj] = jj;
    }
    SortByDimension(pRtree, aaSorted[ii], nCell, ii, aCell, aSpare);
  }

  for(ii=0; ii<pRtree->nDim; ii++){
    float margin = 0.0;
    float fBestOverlap = 0.0;
    float fBestArea = 0.0;
    int iBestLeft = 0;
    int nLeft;

    for(
      nLeft=RTREE_MINCELLS(pRtree); 
      nLeft<=(nCell-RTREE_MINCELLS(pRtree)); 
      nLeft++
    ){

}

static int deleteCell(Rtree *, RtreeNode *, int, int);

static int removeNode(Rtree *pRtree, RtreeNode *pNode, int iHeight){
  int rc;
  int rc2;
  RtreeNode *pParent = 0;
  int iCell;

  assert( pNode->nRef==1 );

  /* Remove the entry in the parent cell. */
  rc = nodeParentIndex(pRtree, pNode, &iCell);
  if( rc==SQLITE_OK ){

    if( ii==(nCell-1) ){
      memcpy(&aCell[ii], pCell, sizeof(RtreeCell));
    }else{
      nodeGetCell(pRtree, pNode, ii, &aCell[ii]);
    }
    aOrder[ii] = ii;
    for(iDim=0; iDim<pRtree->nDim; iDim++){
      aCenterCoord[iDim] += (float)DCOORD(aCell[ii].aCoord[iDim*2]);
      aCenterCoord[iDim] += (float)DCOORD(aCell[ii].aCoord[iDim*2+1]);
    }
  }
  for(iDim=0; iDim<pRtree->nDim; iDim++){
    aCenterCoord[iDim] = (float)(aCenterCoord[iDim]/((float)nCell*2.0));
  }

  for(ii=0; ii<nCell; ii++){
    aDistance[ii] = 0.0;
    for(iDim=0; iDim<pRtree->nDim; iDim++){
      float coord = (float)(DCOORD(aCell[ii].aCoord[iDim*2+1]) - 
          DCOORD(aCell[ii].aCoord[iDim*2]));
      aDistance[ii] += (coord-aCenterCoord[iDim])*(coord-aCenterCoord[iDim]);
    }
  }

  SortByDistance(aOrder, nCell, aDistance, aSpare);
  nodeZero(pRtree, pNode);

    RtreeNode *pInsert;
    RtreeCell cell;
    nodeGetCell(pRtree, pNode, ii, &cell);

    /* Find a node to store this cell in. pNode->iNode currently contains
    ** the height of the sub-tree headed by the cell.
    */
    rc = ChooseLeaf(pRtree, &cell, (int)pNode->iNode, &pInsert);
    if( rc==SQLITE_OK ){
      int rc2;
      rc = rtreeInsertCell(pRtree, pInsert, &cell, (int)pNode->iNode);
      rc2 = nodeRelease(pRtree, pInsert);
      if( rc==SQLITE_OK ){
        rc = rc2;
      }
    }
  }
  return rc;

  sqlite3 *db,                    /* Database handle */
  Rtree *pRtree,                  /* Rtree handle */
  int isCreate                    /* True for xCreate, false for xConnect */
){
  int rc;
  char *zSql;
  if( isCreate ){
    int iPageSize = 0;
    zSql = sqlite3_mprintf("PRAGMA %Q.page_size", pRtree->zDb);
    rc = getIntFromStmt(db, zSql, &iPageSize);
    if( rc==SQLITE_OK ){
      pRtree->iNodeSize = iPageSize-64;
      if( (4+pRtree->nBytesPerCell*RTREE_MAXCELLS)<pRtree->iNodeSize ){
        pRtree->iNodeSize = 4+pRtree->nBytesPerCell*RTREE_MAXCELLS;
      }

# endif
#endif /* SQLITE_ENABLE_LOCKING_STYLE */

#if defined(__APPLE__) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS)
# include <sys/mount.h>
#endif

#ifdef HAVE_UTIME
# include <utime.h>
#endif

/*
** Allowed values of unixFile.fsFlags
*/
#define SQLITE_FSFLAGS_IS_MSDOS     0x1

/*
** If we are to be thread-safe, include the pthreads header and define

  /* If we have any lock, then the lock file already exists.  All we have
  ** to do is adjust our internal record of the lock level.
  */
  if( pFile->eFileLock > NO_LOCK ){
    pFile->eFileLock = eFileLock;

    /* Always update the timestamp on the old file */
#ifdef HAVE_UTIME
    utime(zLockFile, NULL);
#else
    utimes(zLockFile, NULL);
#endif
    return SQLITE_OK;
  }
  
  /* grab an exclusive lock */
  fd = robust_open(zLockFile,O_RDONLY|O_CREAT|O_EXCL,0600);

    if( nRem>0 ){
      pFile->lastErrno = GetLastError();
      rc = 1;
    }
  }

  if( rc ){
    if(   ( pFile->lastErrno==ERROR_HANDLE_DISK_FULL )
       || ( pFile->lastErrno==ERROR_DISK_FULL )){
      return SQLITE_FULL;
    }
    return winLogError(SQLITE_IOERR_WRITE, "winWrite", pFile->zPath);
  }
  return SQLITE_OK;
}

**
** ^The sqlite3_exec() interface runs zero or more UTF-8 encoded,
** semicolon-separate SQL statements passed into its 2nd argument,
** in the context of the [database connection] passed in as its 1st
** argument.  ^If the callback function of the 3rd argument to
** sqlite3_exec() is not NULL, then it is invoked for each result row
** coming out of the evaluated SQL statements.  ^The 4th argument to
** sqlite3_exec() is relayed through to the 1st argument of each
** callback invocation.  ^If the callback pointer to sqlite3_exec()
** is NULL, then no callback is ever invoked and result rows are
** ignored.
**
** ^If an error occurs while evaluating the SQL statements passed into
** sqlite3_exec(), then execution of the current statement stops and
** subsequent statements are skipped.  ^If the 5th parameter to sqlite3_exec()

** of good-quality randomness into zOut.  The return value is
** the actual number of bytes of randomness obtained.
** The xSleep() method causes the calling thread to sleep for at
** least the number of microseconds given.  ^The xCurrentTime()
** method returns a Julian Day Number for the current date and time as
** a floating point value.
** ^The xCurrentTimeInt64() method returns, as an integer, the Julian
** Day Number multiplied by 86400000 (the number of milliseconds in 
** a 24-hour day).  
** ^SQLite will use the xCurrentTimeInt64() method to get the current
** date and time if that method is available (if iVersion is 2 or 
** greater and the function pointer is not NULL) and will fall back
** to xCurrentTime() if xCurrentTimeInt64() is unavailable.
**
** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces

** ^SQLite will never require a scratch buffer that is more than 6
** times the database page size. ^If SQLite needs needs additional
** scratch memory beyond what is provided by this configuration option, then 
** [sqlite3_malloc()] will be used to obtain the memory needed.</dd>
**
** [[SQLITE_CONFIG_PAGECACHE]] <dt>SQLITE_CONFIG_PAGECACHE</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
** the database page cache with the default page cache implementation.  
** This configuration should not be used if an application-define page
** cache implementation is loaded using the SQLITE_CONFIG_PCACHE option.
** There are three arguments to this option: A pointer to 8-byte aligned
** memory, the size of each page buffer (sz), and the number of pages (N).
** The sz argument should be the size of the largest database page
** (a power of two between 512 and 32768) plus a little extra for each
** page header.  ^The page header size is 20 to 40 bytes depending on

** automatically deleted as soon as the database connection is closed.
**
** [[URI filenames in sqlite3_open()]] <h3>URI Filenames</h3>
**
** ^If [URI filename] interpretation is enabled, and the filename argument
** begins with "file:", then the filename is interpreted as a URI. ^URI
** filename interpretation is enabled if the [SQLITE_OPEN_URI] flag is
** set in the fourth argument to sqlite3_open_v2(), or if it has
** been enabled globally using the [SQLITE_CONFIG_URI] option with the
** [sqlite3_config()] method or by the [SQLITE_USE_URI] compile-time option.
** As of SQLite version 3.7.7, URI filename interpretation is turned off
** by default, but future releases of SQLite might enable URI filename
** interpretation by default.  See "[URI filenames]" for additional
** information.
**
** URI filenames are parsed according to RFC 3986. ^If the URI contains an
** authority, then it must be either an empty string or the string 
** "localhost". ^If the authority is not an empty string or "localhost", an 
** error is returned to the caller. ^The fragment component of a URI, if 
** present, is ignored.

** [SQLITE_DONE], [SQLITE_ROW], [SQLITE_ERROR], or [SQLITE_MISUSE].
** ^With the "v2" interface, any of the other [result codes] or
** [extended result codes] might be returned as well.
**
** ^[SQLITE_BUSY] means that the database engine was unable to acquire the
** database locks it needs to do its job.  ^If the statement is a [COMMIT]
** or occurs outside of an explicit transaction, then you can retry the
** statement.  If the statement is not a [COMMIT] and occurs within an
** explicit transaction then you should rollback the transaction before
** continuing.
**
** ^[SQLITE_DONE] means that the statement has finished executing
** successfully.  sqlite3_step() should not be called again on this virtual
** machine without first calling [sqlite3_reset()] to reset the virtual
** machine back to its initial state.

int sqlite3_column_type(sqlite3_stmt*, int iCol);
sqlite3_value *sqlite3_column_value(sqlite3_stmt*, int iCol);

/*
** CAPI3REF: Destroy A Prepared Statement Object
**
** ^The sqlite3_finalize() function is called to delete a [prepared statement].
** ^If the most recent evaluation of the statement encountered no errors
** or if the statement is never been evaluated, then sqlite3_finalize() returns
** SQLITE_OK.  ^If the most recent evaluation of statement S failed, then
** sqlite3_finalize(S) returns the appropriate [error code] or
** [extended error code].
**
** ^The sqlite3_finalize(S) routine can be called at any point during
** the life cycle of [prepared statement] S:

** ^The implementation is not required to provided versions of these
** routines that actually work. If the implementation does not provide working
** versions of these routines, it should at least provide stubs that always
** return true so that one does not get spurious assertion failures.
**
** ^If the argument to sqlite3_mutex_held() is a NULL pointer then
** the routine should return 1.   This seems counter-intuitive since
** clearly the mutex cannot be held if it does not exist.  But
** the reason the mutex does not exist is because the build is not
** using mutexes.  And we do not want the assert() containing the
** call to sqlite3_mutex_held() to fail, so a non-zero return is
** the appropriate thing to do.  ^The sqlite3_mutex_notheld()
** interface should also return 1 when given a NULL pointer.
*/
#ifndef NDEBUG

** stored in the cache, both pinned and unpinned.
** 
** [[the xFetch() page cache methods]]
** The xFetch() method locates a page in the cache and returns a pointer to 
** the page, or a NULL pointer.
** A "page", in this context, means a buffer of szPage bytes aligned at an
** 8-byte boundary. The page to be fetched is determined by the key. ^The
** minimum key value is 1.  After it has been retrieved using xFetch, the page 
** is considered to be "pinned".
**
** If the requested page is already in the page cache, then the page cache
** implementation must return a pointer to the page buffer with its content
** intact.  If the requested page is not already in the cache, then the
** cache implementation should use the value of the createFlag
** parameter to help it determined what action to take:

          int bytes = sqlite3_value_bytes(pIn);
          pVal = Tcl_NewByteArrayObj(sqlite3_value_blob(pIn), bytes);
          break;
        }
        case SQLITE_INTEGER: {
          sqlite_int64 v = sqlite3_value_int64(pIn);
          if( v>=-2147483647 && v<=2147483647 ){
            pVal = Tcl_NewIntObj((int)v);
          }else{
            pVal = Tcl_NewWideIntObj(v);
          }
          break;
        }
        case SQLITE_FLOAT: {
          double r = sqlite3_value_double(pIn);

      const char *zBlob = sqlite3_column_blob(pStmt, iCol);
      if( !zBlob ) bytes = 0;
      return Tcl_NewByteArrayObj((u8*)zBlob, bytes);
    }
    case SQLITE_INTEGER: {
      sqlite_int64 v = sqlite3_column_int64(pStmt, iCol);
      if( v>=-2147483647 && v<=2147483647 ){
        return Tcl_NewIntObj((int)v);
      }else{
        return Tcl_NewWideIntObj(v);
      }
    }
    case SQLITE_FLOAT: {
      return Tcl_NewDoubleObj(sqlite3_column_double(pStmt, iCol));
    }

      int len;
      char *zNull = Tcl_GetStringFromObj(objv[2], &len);
      if( pDb->zNull ){
        Tcl_Free(pDb->zNull);
      }
      if( zNull && len>0 ){
        pDb->zNull = Tcl_Alloc( len + 1 );
        memcpy(pDb->zNull, zNull, len);
        pDb->zNull[len] = '\0';
      }else{
        pDb->zNull = 0;
      }
    }
    Tcl_SetObjResult(interp, dbTextToObj(pDb->zNull));
    break;

#ifdef SQLITE_OMIT_COMPOUND_SELECT
  Tcl_SetVar2(interp, "sqlite_options", "compound", "0", TCL_GLOBAL_ONLY);
#else
  Tcl_SetVar2(interp, "sqlite_options", "compound", "1", TCL_GLOBAL_ONLY);
#endif




  Tcl_SetVar2(interp, "sqlite_options", "conflict", "1", TCL_GLOBAL_ONLY);


#if SQLITE_OS_UNIX
  Tcl_SetVar2(interp, "sqlite_options", "crashtest", "1", TCL_GLOBAL_ONLY);
#else
  Tcl_SetVar2(interp, "sqlite_options", "crashtest", "0", TCL_GLOBAL_ONLY);
#endif

/*
** A pointer to an instance of this structure is passed as the user-context
** pointer when registering for an unlock-notify callback.
*/
typedef struct UnlockNotification UnlockNotification;
struct UnlockNotification {
  int fired;                         /* True after unlock event has occurred */
  pthread_cond_t cond;               /* Condition variable to wait on */
  pthread_mutex_t mutex;             /* Mutex to protect structure */
};

/*
** This function is an unlock-notify callback registered with SQLite.
*/
static void unlock_notify_cb(void **apArg, int nArg){
  int i;

  REGISTER_TRACE(pOp->p1, pIn1);
  pc = pcDest;
  break;
}

/* Opcode:  HaltIfNull  P1 P2 P3 P4 *
**
** Check the value in register P3.  If it is NULL then Halt using
** parameter P1, P2, and P4 as if this were a Halt instruction.  If the
** value in register P3 is not NULL, then this routine is a no-op.
*/
case OP_HaltIfNull: {      /* in3 */
  pIn3 = &aMem[pOp->p3];
  if( (pIn3->flags & MEM_Null)==0 ) break;
  /* Fall through into OP_Halt */

** This works just like the Lt opcode except that the jump is taken if
** the operands in registers P1 and P3 are not equal.  See the Lt opcode for
** additional information.
**
** If SQLITE_NULLEQ is set in P5 then the result of comparison is always either
** true or false and is never NULL.  If both operands are NULL then the result
** of comparison is false.  If either operand is NULL then the result is true.
** If neither operand is NULL the result is the same as it would be if
** the SQLITE_NULLEQ flag were omitted from P5.
*/
/* Opcode: Eq P1 P2 P3 P4 P5
**
** This works just like the Lt opcode except that the jump is taken if
** the operands in registers P1 and P3 are equal.
** See the Lt opcode for additional information.
**
** If SQLITE_NULLEQ is set in P5 then the result of comparison is always either
** true or false and is never NULL.  If both operands are NULL then the result
** of comparison is true.  If either operand is NULL then the result is false.
** If neither operand is NULL the result is the same as it would be if
** the SQLITE_NULLEQ flag were omitted from P5.
*/
/* Opcode: Le P1 P2 P3 P4 P5
**
** This works just like the Lt opcode except that the jump is taken if
** the content of register P3 is less than or equal to the content of
** register P1.  See the Lt opcode for additional information.

    sqlite3VdbeMemSetInt64(pOut, ~sqlite3VdbeIntValue(pIn1));
  }
  break;
}

/* Opcode: If P1 P2 P3 * *
**
** Jump to P2 if the value in register P1 is true.  The value
** is considered true if it is numeric and non-zero.  If the value
** in P1 is NULL then take the jump if P3 is true.
*/
/* Opcode: IfNot P1 P2 P3 * *
**
** Jump to P2 if the value in register P1 is False.  The value
** is considered true if it has a numeric value of zero.  If the value
** in P1 is NULL then take the jump if P3 is true.
*/
case OP_If:                 /* jump, in1 */
case OP_IfNot: {            /* jump, in1 */
  int c;
  pIn1 = &aMem[pOp->p1];

    }
  }
  break;
}

/* Opcode: NotExists P1 P2 P3 * *
**
** Use the content of register P3 as an integer key.  If a record 
** with that key does not exist in table of P1, then jump to P2. 
** If the record does exist, then fall through.  The cursor is left 
** pointing to the record if it exists.
**
** The difference between this operation and NotFound is that this
** operation assumes the key is an integer and that P1 is a table whereas
** NotFound assumes key is a blob constructed from MakeRecord and

** The record number is not previously used as a key in the database
** table that cursor P1 points to.  The new record number is written
** written to register P2.
**
** If P3>0 then P3 is a register in the root frame of this VDBE that holds 
** the largest previously generated record number. No new record numbers are
** allowed to be less than this value. When this value reaches its maximum, 
** an SQLITE_FULL error is generated. The P3 register is updated with the '
** generated record number. This P3 mechanism is used to help implement the
** AUTOINCREMENT feature.
*/
case OP_NewRowid: {           /* out2-prerelease */
  i64 v;                 /* The new rowid */
  VdbeCursor *pC;        /* Cursor of table to get the new rowid */
  int res;               /* Result of an sqlite3BtreeLast() */

  }
  pC->rowidIsValid = 0;
  break;
}

/* Opcode: IdxInsert P1 P2 P3 * P5
**
** Register P2 holds an SQL index key made using the
** MakeRecord instructions.  This opcode writes that key
** into the index P1.  Data for the entry is nil.
**
** P3 is a flag that provides a hint to the b-tree layer that this
** insert is likely to be an append.
**
** This instruction only works for indices.  The equivalent instruction

  2   "DELETE FROM t1 LIMIT 3"               {4 5}
  3   "DELETE FROM t1 LIMIT 1 OFFSET 0"      {2 3 4 5}
  4   "DELETE FROM t1 LIMIT 1 OFFSET 1"      {1 3 4 5}
  5   "DELETE FROM t1 LIMIT 1 OFFSET 2"      {1 2 4 5}
}


# EVIDENCE-OF: R-07548-13422 The ORDER BY clause on a DELETE statement
# is used only to determine which rows fall within the LIMIT. The order
# in which rows are deleted is arbitrary and is not influenced by the
# ORDER BY clause.
#
#     In practice, rows are always deleted in rowid order.
#
do_delete_tests e_delete-3.10 -repair {

# truncate the fractional part of the REAL.
#
do_expr_test e_expr-31.1.1 { CAST(3.14159 AS INTEGER) } integer 3
do_expr_test e_expr-31.1.2 { CAST(1.99999 AS INTEGER) } integer 1
do_expr_test e_expr-31.1.3 { CAST(-1.99999 AS INTEGER) } integer -1
do_expr_test e_expr-31.1.4 { CAST(-0.99999 AS INTEGER) } integer 0

# EVIDENCE-OF: R-49503-28105 If a REAL is too large to be represented as
# an INTEGER then the result of the cast is the largest negative
# integer: -9223372036854775808.
#
do_expr_test e_expr-31.2.1 { CAST(2e+50 AS INT) } integer -9223372036854775808
do_expr_test e_expr-31.2.2 { CAST(-2e+50 AS INT) } integer -9223372036854775808
do_expr_test e_expr-31.2.3 { 
  CAST(-9223372036854775809.0 AS INT)
} integer -9223372036854775808

    2  { ( SELECT x FROM t4 WHERE y<'one' ORDER BY y )  }
} {
  do_expr_test e_expr-36.4.$tn $expr null {}
}


finish_test

} {
    1    "INSERT INTO a2 VALUES(1)"         {a2 3 1}
    2    "INSERT INTO a2 VALUES(1,2)"       {a2 3 2}
    3    "INSERT INTO a2 VALUES(1,2,3,4)"   {a2 3 4}
    4    "INSERT INTO a2 VALUES(1,2,3,4,5)" {a2 3 5}
}

# EVIDENCE-OF: R-04006-57648 In this case the result of evaluating the
# left-most expression in the VALUES list is inserted into the left-most
# column of the new row, and so on.
#
delete_all_data
do_insert_tests e_insert-1.3 {
    1a   "INSERT INTO a2 VALUES(1, 2, 3)"    {}
    1b   "SELECT * FROM a2 WHERE oid=last_insert_rowid()" {1 2 3}

    3 1    8 1    7 1    -20 1    93 1    -1 1    -1 2    93 2
  }
  4  "SELECT z AS x, x AS z FROM d1 ORDER BY x" {
    -20 1    -1 2    -1 1    3 1    7 1    8 1    93 2    93 1
  }
}

# EVIDENCE-OF: R-65068-27207 Otherwise, if the ORDER BY expression is
# any other expression, it is evaluated and the returned value used to
# order the output rows.
#
# EVIDENCE-OF: R-03421-57988 If the SELECT statement is a simple SELECT,
# then an ORDER BY may contain any arbitrary expressions.
#
do_select_tests e_select-8.6 {
  1   "SELECT * FROM d1 ORDER BY x+y+z" {
    1 2 -20    1 5 -1    1 2 3    2 5 -1 

  6   "UPDATE t2 SET a = b WHERE rowid>2"
      {3 1 4   1 5 9   2 2 2}

  6   "UPDATE t2 SET b=6, c=5 WHERE a=b AND b=c"
      {3 1 4   1 5 9   2 6 5}
}

# EVIDENCE-OF: R-34751-18293 If a single column-name appears more than
# once in the list of assignment expressions, all but the rightmost
# occurrence is ignored.
#
do_update_tests e_update-1.6 -query {
  SELECT * FROM t2
} {
  1   "UPDATE t2 SET c=5, c=6, c=7 WHERE rowid=1" {3 1 7   1 5 9   2 6 5}
  2   "UPDATE t2 SET c=7, c=6, c=5 WHERE rowid=1" {3 1 5   1 5 9   2 6 5}
  3   "UPDATE t2 SET c=5, b=6, c=7 WHERE rowid=1" {3 6 7   1 5 9   2 6 5}

  4   "UPDATE t7 SET s = q ORDER BY q DESC LIMIT 5"    {6 7 8 9 10}
}


} ;# ifcapable update_delete_limit
 
finish_test

  set e
}

# EVIDENCE-OF: R-35840-33204 If URI filename interpretation is enabled,
# and the filename argument begins with "file:", then the filename is
# interpreted as a URI.
#
# EVIDENCE-OF: R-24124-56960 URI filename interpretation is enabled if
# the SQLITE_OPEN_URI flag is set in the fourth argument to
# sqlite3_open_v2(), or if it has been enabled globally using the
# SQLITE_CONFIG_URI option with the sqlite3_config() method or by the
# SQLITE_USE_URI compile-time option.
#
if {$tcl_platform(platform) == "unix"} {
  set flags [list SQLITE_OPEN_READWRITE SQLITE_OPEN_CREATE]

    do_test enc4-$i.$j.2 {
      set S [sqlite3_prepare_v2 db "SELECT $init+?" -1 dummy]
      sqlite3_expired $S
    } {0}
      
    set k 1
    foreach val $vals {
      for {set x 1} {$x<16} {incr x} {
        set part [expr $init + [string range $val 0 [expr $x-1]]]



        do_realnum_test enc4-$i.$j.$k.3.$x {
          sqlite3_reset $S
          sqlite3_bind_text $S 1 $val $x
          sqlite3_step $S
          sqlite3_column_text $S 0
        } [list $part]
        
        do_realnum_test enc4-$i.$j.$k.4.$x {
          sqlite3_reset $S
          sqlite3_bind_text16 $S 1 [encoding convertto unicode $val] [expr $x*2]
          sqlite3_step $S
          sqlite3_column_text $S 0
        } [list $part]
      }
      

source $testdir/tester.tcl

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





do_test fts4aa-1.0 {
db eval {
CREATE VIRTUAL TABLE t1 USING fts4(words, tokenize porter);
BEGIN TRANSACTION;
INSERT INTO t1(docid,words) VALUES(1001001,'In the beginning God created the heaven and the earth.');
INSERT INTO t1(docid,words) VALUES(1001002,'And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.');

  binary scan $blob $scan($::tcl_platform(byteOrder)) r
  return $r
}
db func mit mit

do_test fts4aa-2.1 {
  db eval {
    SELECT docid, mit(matchinfo(t1, 'pcxnal')) FROM t1 WHERE t1 MATCH 'melchizedek';
  }
} {1014018 {1 1 1 1 1 1533 25 20}}
do_test fts4aa-2.2 {
  db eval {
    SELECT docid, mit(matchinfo(t1, 'pcxnal')) FROM t1
     WHERE t1 MATCH 'spake hebrew'
     ORDER BY docid;
  }
} {1039014 {2 1 1 40 40 1 6 6 1533 25 42} 1039017 {2 1 1 40 40 1 6 6 1533 25 26}}
do_test fts4aa-2.3 {
  db eval {
    SELECT docid, mit(matchinfo(t1, 'pcxnal')) FROM t1
     WHERE t1 MATCH 'laban overtook jacob'
     ORDER BY docid;
  }
} {1031025 {3 1 2 54 46 1 3 3 2 181 160 1533 25 24}}

do_test fts4aa-9.1 {
  db eval {
    DELETE FROM t1 WHERE docid!=1050026;
    SELECT hex(size) FROM t1_docsize;
    SELECT hex(value) FROM t1_stat;
  }
} {17 01176F}

do_test fts4aa-9.2 {
  db eval {
    SELECT docid FROM t1 EXCEPT SELECT docid FROM t1_docsize
  }
} {}
do_test fts4aa-9.3 {
  db eval {
    SELECT docid FROM t1_docsize EXCEPT SELECT docid FROM t1
  }
} {}
do_test fts4aa-9.4 {
  # Note: Token 'in' is being deferred in the following query. 
  db eval {
    SELECT docid, mit(matchinfo(t1, 'pcxnal')) FROM t1
     WHERE t1 MATCH 'joseph died in egypt'
     ORDER BY docid;
  }
} {1050026 {4 1 1 1 1 1 1 1 2 1 1 1 1 1 1 23 23}}

finish_test

  } else {
    puts " Ok"
  }
  flush stdout
}

proc realnum_normalize {r} {
  # different TCL versions display floating point values differently.
  string map {1.#INF inf Inf inf .0e e} [regsub -all {(e[+-])0+} $r {\1}]
}
proc do_realnum_test {name cmd expected} {
  uplevel [list do_test $name [
    subst -nocommands { realnum_normalize [ $cmd ] }
  ] [realnum_normalize $expected]]
}

#ifdef TEST
#define MAXRHS 5       /* Set low to exercise exception code */
#else
#define MAXRHS 1000
#endif

static int showPrecedenceConflict = 0;

















static char *msort(char*,char**,int(*)(const char*,const char*));

/*
** Compilers are getting increasingly pedantic about type conversions
** as C evolves ever closer to Ada....  To work around the latest problems
** we have to define the following variant of strlen().
*/

    {OPT_FLAG, "x", (char*)&version, "Print the version number."},
    {OPT_FLAG,0,0,0}
  };
  int i;
  int exitcode;
  struct lemon lem;



  OptInit(argv,options,stderr);
  if( version ){
     printf("Lemon version 1.0\n");
     exit(0); 
  }
  if( OptNArgs()!=1 ){
    fprintf(stderr,"Exactly one filename argument is required.\n");

  }
  if( lem.nconflict > 0 ){
    fprintf(stderr,"%d parsing conflicts.\n",lem.nconflict);
  }

  /* return 0 on success, 1 on failure. */
  exitcode = ((lem.errorcnt > 0) || (lem.nconflict > 0)) ? 1 : 0;

  exit(exitcode);
  return (exitcode);
}
/******************** From the file "msort.c" *******************************/
/*
** A generic merge-sort program.
**

  lemp->outname = file_makename(lemp, suffix);
  fp = fopen(lemp->outname,mode);
  if( fp==0 && *mode=='w' ){
    fprintf(stderr,"Can't open file \"%s\".\n",lemp->outname);
    lemp->errorcnt++;
    return 0;
  }

















  return fp;
}

/* Duplicate the input file without comments and without actions 
** on rules */
void Reprint(struct lemon *lemp)
{

close $in

# Open the output file and write a header comment at the beginning
# of the file.
#
set out [open sqlite3.c w]
# Force the output to use unix line endings, even on Windows.
fconfigure $out -translation lf
set today [clock format [clock seconds] -format "%Y-%m-%d %H:%M:%S UTC" -gmt 1]
puts $out [subst \
{/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version $VERSION.  By combining all the individual C code files into this 
** single large file, the entire code can be compiled as a single translation
** unit.  This allows many compilers to do optimizations that would not be