[sql] Import SQLite 3.17.0.

third_party/sqlite/src/src/test_bestindex.c

Index: third_party/sqlite/src/src/test_bestindex.c
diff --git a/third_party/sqlite/src/src/test_bestindex.c b/third_party/sqlite/src/src/test_bestindex.c
new file mode 100644
index 0000000000000000000000000000000000000000..94017f0349fbb03fff781e42ceecc77c8159e769
--- /dev/null
+++ b/third_party/sqlite/src/src/test_bestindex.c
@@ -0,0 +1,610 @@
+/*
+** 2016-03-01
+**
+** 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.
+**
+*************************************************************************
+** Code for testing the virtual table xBestIndex method and the query
+** planner.
+*/
+
+
+/*
+** INSTRUCTIONS
+**
+** This module exports a single tcl command - [register_tcl_module]. When
+** invoked, it registers a special virtual table module with a database
+** connection.
+**
+** The virtual table is currently read-only. And always returns zero rows.
+** It is created with a single argument - the name of a Tcl command - as
+** follows:
+**
+**   CREATE VIRTUAL TABLE x1 USING tcl(tcl_command);
+**
+** The command [tcl_command] is invoked when the table is first created (or
+** connected), when the xBestIndex() method is invoked and when the xFilter()
+** method is called. When it is created (or connected), it is invoked as
+** follows:
+**
+**   tcl_command xConnect
+**
+** In this case the return value of the script is passed to the
+** sqlite3_declare_vtab() function to create the virtual table schema.
+**
+** When the xBestIndex() method is called by SQLite, the Tcl command is
+** invoked as:
+**
+**   tcl_command xBestIndex CONSTRAINTS ORDERBY MASK
+**
+** where CONSTRAINTS is a tcl representation of the aConstraints[] array,
+** ORDERBY is a representation of the contents of the aOrderBy[] array and
+** MASK is a copy of sqlite3_index_info.colUsed. For example if the virtual
+** table is declared as:
+**
+**   CREATE TABLE x1(a, b, c)
+**
+** and the query is:
+**
+**   SELECT * FROM x1 WHERE a=? AND c<? ORDER BY b, c;
+**
+** then the Tcl command is:
+**
+**   tcl_command xBestIndex                                  \
+**     {{op eq column 0 usable 1} {op lt column 2 usable 1}} \
+**     {{column 1 desc 0} {column 2 desc 0}}                 \
+**     7
+**
+** The return value of the script is a list of key-value pairs used to
+** populate the output fields of the sqlite3_index_info structure. Possible
+** keys and the usage of the accompanying values are:
+** 
+**   "orderby"          (value of orderByConsumed flag)
+**   "cost"             (value of estimatedCost field)
+**   "rows"             (value of estimatedRows field)
+**   "use"              (index of used constraint in aConstraint[])
+**   "omit"             (like "use", but also sets omit flag)
+**   "idxnum"           (value of idxNum field)
+**   "idxstr"           (value of idxStr field)
+**
+** Refer to code below for further details.
+**
+** When SQLite calls the xFilter() method, this module invokes the following
+** Tcl script:
+**
+**   tcl_command xFilter IDXNUM IDXSTR ARGLIST
+**
+** IDXNUM and IDXSTR are the values of the idxNum and idxStr parameters
+** passed to xFilter. ARGLIST is a Tcl list containing each of the arguments
+** passed to xFilter in text form.
+**
+** As with xBestIndex(), the return value of the script is interpreted as a
+** list of key-value pairs. There is currently only one key defined - "sql".
+** The value must be the full text of an SQL statement that returns the data
+** for the current scan. The leftmost column returned by the SELECT is assumed
+** to contain the rowid. Other columns must follow, in order from left to
+** right.
+*/
+
+
+#include "sqliteInt.h"
+#if defined(INCLUDE_SQLITE_TCL_H)
+#  include "sqlite_tcl.h"
+#else
+#  include "tcl.h"
+#endif
+
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+
+typedef struct tcl_vtab tcl_vtab;
+typedef struct tcl_cursor tcl_cursor;
+
+/* 
+** A fs virtual-table object 
+*/
+struct tcl_vtab {
+  sqlite3_vtab base;
+  Tcl_Interp *interp;
+  Tcl_Obj *pCmd;
+  sqlite3 *db;
+};
+
+/* A tcl cursor object */
+struct tcl_cursor {
+  sqlite3_vtab_cursor base;
+  sqlite3_stmt *pStmt;            /* Read data from here */
+};
+
+/*
+** Dequote string z in place.
+*/
+static void tclDequote(char *z){
+  char q = z[0];
+
+  /* Set stack variable q to the close-quote character */
+  if( q=='[' || q=='\'' || q=='"' || q=='`' ){
+    int iIn = 1;
+    int iOut = 0;
+    if( q=='[' ) q = ']';  
+
+    while( ALWAYS(z[iIn]) ){
+      if( z[iIn]==q ){
+        if( z[iIn+1]!=q ){
+          /* Character iIn was the close quote. */
+          iIn++;
+          break;
+        }else{
+          /* Character iIn and iIn+1 form an escaped quote character. Skip
+          ** the input cursor past both and copy a single quote character 
+          ** to the output buffer. */
+          iIn += 2;
+          z[iOut++] = q;
+        }
+      }else{
+        z[iOut++] = z[iIn++];
+      }
+    }
+
+    z[iOut] = '\0';
+  }
+}
+
+/*
+** This function is the implementation of both the xConnect and xCreate
+** methods of the fs virtual table.
+**
+** The argv[] array contains the following:
+**
+**   argv[0]   -> module name  ("fs")
+**   argv[1]   -> database name
+**   argv[2]   -> table name
+**   argv[...] -> other module argument fields.
+*/
+static int tclConnect(
+  sqlite3 *db,
+  void *pAux,
+  int argc, const char *const*argv,
+  sqlite3_vtab **ppVtab,
+  char **pzErr
+){
+  Tcl_Interp *interp = (Tcl_Interp*)pAux;
+  tcl_vtab *pTab = 0;
+  char *zCmd = 0;
+  Tcl_Obj *pScript = 0;
+  int rc = SQLITE_OK;
+
+  if( argc!=4 ){
+    *pzErr = sqlite3_mprintf("wrong number of arguments");
+    return SQLITE_ERROR;
+  }
+
+  zCmd = sqlite3_malloc64(strlen(argv[3])+1);
+  pTab = (tcl_vtab*)sqlite3_malloc64(sizeof(tcl_vtab));
+  if( zCmd && pTab ){
+    memcpy(zCmd, argv[3], strlen(argv[3])+1);
+    tclDequote(zCmd);
+    memset(pTab, 0, sizeof(tcl_vtab));
+
+    pTab->pCmd = Tcl_NewStringObj(zCmd, -1);
+    pTab->interp = interp;
+    pTab->db = db;
+    Tcl_IncrRefCount(pTab->pCmd);
+
+    pScript = Tcl_DuplicateObj(pTab->pCmd);
+    Tcl_IncrRefCount(pScript);
+    Tcl_ListObjAppendElement(interp, pScript, Tcl_NewStringObj("xConnect", -1));
+
+    rc = Tcl_EvalObjEx(interp, pScript, TCL_EVAL_GLOBAL);
+    if( rc!=TCL_OK ){
+      *pzErr = sqlite3_mprintf("%s", Tcl_GetStringResult(interp));
+      rc = SQLITE_ERROR;
+    }else{
+      rc = sqlite3_declare_vtab(db, Tcl_GetStringResult(interp));
+    }
+
+    if( rc!=SQLITE_OK ){
+      sqlite3_free(pTab);
+      pTab = 0;
+    }
+  }else{
+    rc = SQLITE_NOMEM;
+  }
+
+  sqlite3_free(zCmd);
+  *ppVtab = &pTab->base;
+  return rc;
+}
+
+/* The xDisconnect and xDestroy methods are also the same */
+static int tclDisconnect(sqlite3_vtab *pVtab){
+  tcl_vtab *pTab = (tcl_vtab*)pVtab;
+  Tcl_DecrRefCount(pTab->pCmd);
+  sqlite3_free(pTab);
+  return SQLITE_OK;
+}
+
+/*
+** Open a new tcl cursor.
+*/
+static int tclOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){
+  tcl_cursor *pCur;
+  pCur = sqlite3_malloc(sizeof(tcl_cursor));
+  if( pCur==0 ) return SQLITE_NOMEM;
+  memset(pCur, 0, sizeof(tcl_cursor));
+  *ppCursor = &pCur->base;
+  return SQLITE_OK;
+}
+
+/*
+** Close a tcl cursor.
+*/
+static int tclClose(sqlite3_vtab_cursor *cur){
+  tcl_cursor *pCur = (tcl_cursor *)cur;
+  if( pCur ){
+    sqlite3_finalize(pCur->pStmt);
+    sqlite3_free(pCur);
+  }
+  return SQLITE_OK;
+}
+
+static int tclNext(sqlite3_vtab_cursor *pVtabCursor){
+  tcl_cursor *pCsr = (tcl_cursor*)pVtabCursor;
+  if( pCsr->pStmt ){
+    tcl_vtab *pTab = (tcl_vtab*)(pVtabCursor->pVtab);
+    int rc = sqlite3_step(pCsr->pStmt);
+    if( rc!=SQLITE_ROW ){
+      const char *zErr;
+      rc = sqlite3_finalize(pCsr->pStmt);
+      pCsr->pStmt = 0;
+      if( rc!=SQLITE_OK ){
+        zErr = sqlite3_errmsg(pTab->db);
+        pTab->base.zErrMsg = sqlite3_mprintf("%s", zErr);
+      }
+    }
+  }
+  return SQLITE_OK;
+}
+
+static int tclFilter(
+  sqlite3_vtab_cursor *pVtabCursor, 
+  int idxNum, const char *idxStr,
+  int argc, sqlite3_value **argv
+){
+  tcl_cursor *pCsr = (tcl_cursor*)pVtabCursor;
+  tcl_vtab *pTab = (tcl_vtab*)(pVtabCursor->pVtab);
+  Tcl_Interp *interp = pTab->interp;
+  Tcl_Obj *pScript;
+  Tcl_Obj *pArg;
+  int ii;
+  int rc;
+
+  pScript = Tcl_DuplicateObj(pTab->pCmd);
+  Tcl_IncrRefCount(pScript);
+  Tcl_ListObjAppendElement(interp, pScript, Tcl_NewStringObj("xFilter", -1));
+  Tcl_ListObjAppendElement(interp, pScript, Tcl_NewIntObj(idxNum));
+  if( idxStr ){
+    Tcl_ListObjAppendElement(interp, pScript, Tcl_NewStringObj(idxStr, -1));
+  }else{
+    Tcl_ListObjAppendElement(interp, pScript, Tcl_NewStringObj("", -1));
+  }
+
+  pArg = Tcl_NewObj();
+  Tcl_IncrRefCount(pArg);
+  for(ii=0; ii<argc; ii++){
+    const char *zVal = (const char*)sqlite3_value_text(argv[ii]);
+    Tcl_Obj *pVal;
+    if( zVal==0 ){
+      pVal = Tcl_NewObj();
+    }else{
+      pVal = Tcl_NewStringObj(zVal, -1);
+    }
+    Tcl_ListObjAppendElement(interp, pArg, pVal);
+  }
+  Tcl_ListObjAppendElement(interp, pScript, pArg);
+  Tcl_DecrRefCount(pArg);
+
+  rc = Tcl_EvalObjEx(interp, pScript, TCL_EVAL_GLOBAL);
+  if( rc!=TCL_OK ){
+    const char *zErr = Tcl_GetStringResult(interp);
+    rc = SQLITE_ERROR;
+    pTab->base.zErrMsg = sqlite3_mprintf("%s", zErr);
+  }else{
+    /* Analyze the scripts return value. The return value should be a tcl 
+    ** list object with an even number of elements. The first element of each
+    ** pair must be one of:
+    ** 
+    **   "sql"          (SQL statement to return data)
+    */
+    Tcl_Obj *pRes = Tcl_GetObjResult(interp);
+    Tcl_Obj **apElem = 0;
+    int nElem;
+    rc = Tcl_ListObjGetElements(interp, pRes, &nElem, &apElem);
+    if( rc!=TCL_OK ){
+      const char *zErr = Tcl_GetStringResult(interp);
+      rc = SQLITE_ERROR;
+      pTab->base.zErrMsg = sqlite3_mprintf("%s", zErr);
+    }else{
+      for(ii=0; rc==SQLITE_OK && ii<nElem; ii+=2){
+        const char *zCmd = Tcl_GetString(apElem[ii]);
+        Tcl_Obj *p = apElem[ii+1];
+        if( sqlite3_stricmp("sql", zCmd)==0 ){
+          const char *zSql = Tcl_GetString(p);
+          rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pCsr->pStmt, 0);
+          if( rc!=SQLITE_OK ){
+            const char *zErr = sqlite3_errmsg(pTab->db);
+            pTab->base.zErrMsg = sqlite3_mprintf("unexpected: %s", zErr);
+          }
+        }else{
+          rc = SQLITE_ERROR;
+          pTab->base.zErrMsg = sqlite3_mprintf("unexpected: %s", zCmd);
+        }
+      }
+    }
+  }
+
+  if( rc==SQLITE_OK ){
+    rc = tclNext(pVtabCursor);
+  }
+  return rc;
+}
+
+static int tclColumn(
+  sqlite3_vtab_cursor *pVtabCursor, 
+  sqlite3_context *ctx, 
+  int i
+){
+  tcl_cursor *pCsr = (tcl_cursor*)pVtabCursor;
+  sqlite3_result_value(ctx, sqlite3_column_value(pCsr->pStmt, i+1));
+  return SQLITE_OK;
+}
+
+static int tclRowid(sqlite3_vtab_cursor *pVtabCursor, sqlite_int64 *pRowid){
+  tcl_cursor *pCsr = (tcl_cursor*)pVtabCursor;
+  *pRowid = sqlite3_column_int64(pCsr->pStmt, 0);
+  return SQLITE_OK;
+}
+
+static int tclEof(sqlite3_vtab_cursor *pVtabCursor){
+  tcl_cursor *pCsr = (tcl_cursor*)pVtabCursor;
+  return (pCsr->pStmt==0);
+}
+
+static int tclBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
+  tcl_vtab *pTab = (tcl_vtab*)tab;
+  Tcl_Interp *interp = pTab->interp;
+  Tcl_Obj *pArg;
+  Tcl_Obj *pScript;
+  int ii;
+  int rc = SQLITE_OK;
+
+  pScript = Tcl_DuplicateObj(pTab->pCmd);
+  Tcl_IncrRefCount(pScript);
+  Tcl_ListObjAppendElement(interp, pScript, Tcl_NewStringObj("xBestIndex", -1));
+
+  pArg = Tcl_NewObj();
+  Tcl_IncrRefCount(pArg);
+  for(ii=0; ii<pIdxInfo->nConstraint; ii++){
+    struct sqlite3_index_constraint const *pCons = &pIdxInfo->aConstraint[ii];
+    Tcl_Obj *pElem = Tcl_NewObj();
+    const char *zOp = "?";
+
+    Tcl_IncrRefCount(pElem);
+
+    switch( pCons->op ){
+      case SQLITE_INDEX_CONSTRAINT_EQ:
+        zOp = "eq"; break;
+      case SQLITE_INDEX_CONSTRAINT_GT:
+        zOp = "gt"; break;
+      case SQLITE_INDEX_CONSTRAINT_LE:
+        zOp = "le"; break;
+      case SQLITE_INDEX_CONSTRAINT_LT:
+        zOp = "lt"; break;
+      case SQLITE_INDEX_CONSTRAINT_GE:
+        zOp = "ge"; break;
+      case SQLITE_INDEX_CONSTRAINT_MATCH:
+        zOp = "match"; break;
+      case SQLITE_INDEX_CONSTRAINT_LIKE:
+        zOp = "like"; break;
+      case SQLITE_INDEX_CONSTRAINT_GLOB:
+        zOp = "glob"; break;
+      case SQLITE_INDEX_CONSTRAINT_REGEXP:
+        zOp = "regexp"; break;
+    }
+
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewStringObj("op", -1));
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewStringObj(zOp, -1));
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewStringObj("column", -1));
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewIntObj(pCons->iColumn));
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewStringObj("usable", -1));
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewIntObj(pCons->usable));
+
+    Tcl_ListObjAppendElement(0, pArg, pElem);
+    Tcl_DecrRefCount(pElem);
+  }
+
+  Tcl_ListObjAppendElement(0, pScript, pArg);
+  Tcl_DecrRefCount(pArg);
+
+  pArg = Tcl_NewObj();
+  Tcl_IncrRefCount(pArg);
+  for(ii=0; ii<pIdxInfo->nOrderBy; ii++){
+    struct sqlite3_index_orderby const *pOrder = &pIdxInfo->aOrderBy[ii];
+    Tcl_Obj *pElem = Tcl_NewObj();
+    Tcl_IncrRefCount(pElem);
+
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewStringObj("column", -1));
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewIntObj(pOrder->iColumn));
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewStringObj("desc", -1));
+    Tcl_ListObjAppendElement(0, pElem, Tcl_NewIntObj(pOrder->desc));
+
+    Tcl_ListObjAppendElement(0, pArg, pElem);
+    Tcl_DecrRefCount(pElem);
+  }
+
+  Tcl_ListObjAppendElement(0, pScript, pArg);
+  Tcl_DecrRefCount(pArg);
+
+  Tcl_ListObjAppendElement(0, pScript, Tcl_NewWideIntObj(pIdxInfo->colUsed));
+
+  rc = Tcl_EvalObjEx(interp, pScript, TCL_EVAL_GLOBAL);
+  Tcl_DecrRefCount(pScript);
+  if( rc!=TCL_OK ){
+    const char *zErr = Tcl_GetStringResult(interp);
+    rc = SQLITE_ERROR;
+    pTab->base.zErrMsg = sqlite3_mprintf("%s", zErr);
+  }else{
+    /* Analyze the scripts return value. The return value should be a tcl 
+    ** list object with an even number of elements. The first element of each
+    ** pair must be one of:
+    ** 
+    **   "orderby"          (value of orderByConsumed flag)
+    **   "cost"             (value of estimatedCost field)
+    **   "rows"             (value of estimatedRows field)
+    **   "use"              (index of used constraint in aConstraint[])
+    **   "idxnum"           (value of idxNum field)
+    **   "idxstr"           (value of idxStr field)
+    **   "omit"             (index of omitted constraint in aConstraint[])
+    */
+    Tcl_Obj *pRes = Tcl_GetObjResult(interp);
+    Tcl_Obj **apElem = 0;
+    int nElem;
+    rc = Tcl_ListObjGetElements(interp, pRes, &nElem, &apElem);
+    if( rc!=TCL_OK ){
+      const char *zErr = Tcl_GetStringResult(interp);
+      rc = SQLITE_ERROR;
+      pTab->base.zErrMsg = sqlite3_mprintf("%s", zErr);
+    }else{
+      int iArgv = 1;
+      for(ii=0; rc==SQLITE_OK && ii<nElem; ii+=2){
+        const char *zCmd = Tcl_GetString(apElem[ii]);
+        Tcl_Obj *p = apElem[ii+1];
+        if( sqlite3_stricmp("cost", zCmd)==0 ){
+          rc = Tcl_GetDoubleFromObj(interp, p, &pIdxInfo->estimatedCost);
+        }else
+        if( sqlite3_stricmp("orderby", zCmd)==0 ){
+          rc = Tcl_GetIntFromObj(interp, p, &pIdxInfo->orderByConsumed);
+        }else
+        if( sqlite3_stricmp("idxnum", zCmd)==0 ){
+          rc = Tcl_GetIntFromObj(interp, p, &pIdxInfo->idxNum);
+        }else
+        if( sqlite3_stricmp("idxstr", zCmd)==0 ){
+          sqlite3_free(pIdxInfo->idxStr);
+          pIdxInfo->idxStr = sqlite3_mprintf("%s", Tcl_GetString(p));
+          pIdxInfo->needToFreeIdxStr = 1;
+        }else
+        if( sqlite3_stricmp("rows", zCmd)==0 ){
+          Tcl_WideInt x = 0;
+          rc = Tcl_GetWideIntFromObj(interp, p, &x);
+          pIdxInfo->estimatedRows = (tRowcnt)x;
+        }else
+        if( sqlite3_stricmp("use", zCmd)==0 
+         || sqlite3_stricmp("omit", zCmd)==0 
+        ){
+          int iCons;
+          rc = Tcl_GetIntFromObj(interp, p, &iCons);
+          if( rc==SQLITE_OK ){
+            if( iCons<0 || iCons>=pIdxInfo->nConstraint ){
+              rc = SQLITE_ERROR;
+              pTab->base.zErrMsg = sqlite3_mprintf("unexpected: %d", iCons);
+            }else{
+              int bOmit = (zCmd[0]=='o' || zCmd[0]=='O');
+              pIdxInfo->aConstraintUsage[iCons].argvIndex = iArgv++;
+              pIdxInfo->aConstraintUsage[iCons].omit = bOmit;
+            }
+          }
+        }else{
+          rc = SQLITE_ERROR;
+          pTab->base.zErrMsg = sqlite3_mprintf("unexpected: %s", zCmd);
+        }
+        if( rc!=SQLITE_OK && pTab->base.zErrMsg==0 ){
+          const char *zErr = Tcl_GetStringResult(interp);
+          pTab->base.zErrMsg = sqlite3_mprintf("%s", zErr);
+        }
+      }
+    }
+  }
+
+  return rc;
+}
+
+/*
+** A virtual table module that provides read-only access to a
+** Tcl global variable namespace.
+*/
+static sqlite3_module tclModule = {
+  0,                         /* iVersion */
+  tclConnect,
+  tclConnect,
+  tclBestIndex,
+  tclDisconnect, 
+  tclDisconnect,
+  tclOpen,                      /* xOpen - open a cursor */
+  tclClose,                     /* xClose - close a cursor */
+  tclFilter,                    /* xFilter - configure scan constraints */
+  tclNext,                      /* xNext - advance a cursor */
+  tclEof,                       /* xEof - check for end of scan */
+  tclColumn,                    /* xColumn - read data */
+  tclRowid,                     /* xRowid - read data */
+  0,                           /* xUpdate */
+  0,                           /* xBegin */
+  0,                           /* xSync */
+  0,                           /* xCommit */
+  0,                           /* xRollback */
+  0,                           /* xFindMethod */
+  0,                           /* xRename */
+};
+
+/*
+** Decode a pointer to an sqlite3 object.
+*/
+extern int getDbPointer(Tcl_Interp *interp, const char *zA, sqlite3 **ppDb);
+
+/*
+** Register the echo virtual table module.
+*/
+static int SQLITE_TCLAPI register_tcl_module(
+  ClientData clientData, /* Pointer to sqlite3_enable_XXX function */
+  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
+  int objc,              /* Number of arguments */
+  Tcl_Obj *CONST objv[]  /* Command arguments */
+){
+  sqlite3 *db;
+  if( objc!=2 ){
+    Tcl_WrongNumArgs(interp, 1, objv, "DB");
+    return TCL_ERROR;
+  }
+  if( getDbPointer(interp, Tcl_GetString(objv[1]), &db) ) return TCL_ERROR;
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+  sqlite3_create_module(db, "tcl", &tclModule, (void *)interp);
+#endif
+  return TCL_OK;
+}
+
+#endif
+
+
+/*
+** Register commands with the TCL interpreter.
+*/
+int Sqlitetesttcl_Init(Tcl_Interp *interp){
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+  static struct {
+     char *zName;
+     Tcl_ObjCmdProc *xProc;
+     void *clientData;
+  } aObjCmd[] = {
+     { "register_tcl_module",   register_tcl_module, 0 },
+  };
+  int i;
+  for(i=0; i<sizeof(aObjCmd)/sizeof(aObjCmd[0]); i++){
+    Tcl_CreateObjCommand(interp, aObjCmd[i].zName, 
+        aObjCmd[i].xProc, aObjCmd[i].clientData, 0);
+  }
+#endif
+  return TCL_OK;
+}