SQLite

      Tcl_WrongNumArgs(interp, 2, objv, "?CALLBACK? ?MASK?");
      return TCL_ERROR;
    }else if( objc==2 ){
      if( pDb->zTraceV2 ){
        Tcl_AppendResult(interp, pDb->zTraceV2, (char*)0);
      }
    }else{

      char *zTraceV2;
      int len;
      Tcl_WideInt wMask = 0;
      if( objc==4 ){
        static const char *TTYPE_strs[] = {
          "statement", "profile", "row", "close", 0
        };
        enum TTYPE_enum {
          TTYPE_STMT, TTYPE_PROFILE, TTYPE_ROW, TTYPE_CLOSE
        };
        int i;
        if( TCL_OK!=Tcl_ListObjLength(interp, objv[3], &len) ){
          return TCL_ERROR;
        }
        for(i=0; i<len; i++){
          Tcl_Obj *pObj;
          int ttype;
          if( TCL_OK!=Tcl_ListObjIndex(interp, objv[3], i, &pObj) ){
            return TCL_ERROR;
          }
          if( Tcl_GetIndexFromObj(interp, pObj, TTYPE_strs, "trace type",
                                  0, &ttype)!=TCL_OK ){
            Tcl_WideInt wType;
            Tcl_Obj *pError = Tcl_DuplicateObj(Tcl_GetObjResult(interp));
            Tcl_IncrRefCount(pError);
            if( TCL_OK==Tcl_GetWideIntFromObj(interp, pObj, &wType) ){
              Tcl_DecrRefCount(pError);
              wMask |= wType;
            }else{
              Tcl_SetObjResult(interp, pError);
              Tcl_DecrRefCount(pError);
              return TCL_ERROR;
            }
          }else{
            switch( (enum TTYPE_enum)ttype ){
              case TTYPE_STMT:    wMask |= SQLITE_TRACE_STMT;    break;
              case TTYPE_PROFILE: wMask |= SQLITE_TRACE_PROFILE; break;
              case TTYPE_ROW:     wMask |= SQLITE_TRACE_ROW;     break;
              case TTYPE_CLOSE:   wMask |= SQLITE_TRACE_CLOSE;   break;
            }
          }
        }
      }else{
        wMask = SQLITE_TRACE_STMT; /* use the "legacy" default */
      }
      if( pDb->zTraceV2 ){
        Tcl_Free(pDb->zTraceV2);
      }
      zTraceV2 = Tcl_GetStringFromObj(objv[2], &len);
      if( zTraceV2 && len>0 ){
        pDb->zTraceV2 = Tcl_Alloc( len + 1 );

# 2016 July 14
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The focus
# of this test file is the "sqlite3_trace_v2()" API.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !trace { finish_test ; return }
set ::testprefix trace3

proc trace_v2_error { args } {
  lappend ::stmtlist(error) [string trim $args]
  error "trace error"; # this will be ignored.
}
proc trace_v2_record { args } {
  lappend ::stmtlist(record) [string trim $args]
}
proc trace_v2_nop { args } {}; # do nothing.

do_test trace3-1.0 {
  execsql {
    CREATE TABLE t1(a,b);
    INSERT INTO t1 VALUES(1,NULL);
    INSERT INTO t1 VALUES(2,-1);
    INSERT INTO t1 VALUES(3,0);
    INSERT INTO t1 VALUES(4,1);
    INSERT INTO t1 VALUES(5,-2147483648);
    INSERT INTO t1 VALUES(6,2147483647);
    INSERT INTO t1 VALUES(7,-9223372036854775808);
    INSERT INTO t1 VALUES(8,9223372036854775807);
    INSERT INTO t1 VALUES(9,-1.0);
    INSERT INTO t1 VALUES(10,0.0);
    INSERT INTO t1 VALUES(11,1.0);
    INSERT INTO t1 VALUES(12,'');
    INSERT INTO t1 VALUES(13,'1');
    INSERT INTO t1 VALUES(14,'one');
    INSERT INTO t1 VALUES(15,x'abcd0123');
    INSERT INTO t1 VALUES(16,x'4567cdef');
  }
} {}

do_test trace3-1.1 {
  set rc [catch {db trace_v2 1 2 3} msg]
  lappend rc $msg
} {1 {wrong # args: should be "db trace_v2 ?CALLBACK? ?MASK?"}}
do_test trace3-1.2 {
  set rc [catch {db trace_v2 1 bad} msg]
  lappend rc $msg
} {1 {bad trace type "bad": must be statement, profile, row, or close}}

do_test trace3-2.1 {
  db trace_v2 trace_v2_nop
  db trace_v2
} {trace_v2_nop}

do_test trace3-3.1 {
  unset -nocomplain ::stmtlist
  db trace_v2 trace_v2_nop
  execsql {
    SELECT a, b FROM t1 ORDER BY a;
  }
  array get ::stmtlist
} {}
do_test trace3-3.2 {
  set ::stmtlist(error) {}
  db trace_v2 trace_v2_error
  execsql {
    SELECT a, b FROM t1 ORDER BY a;
  }
  set ::stmtlist(error)
} {/^\{-?\d+ \{SELECT a, b FROM t1 ORDER BY a;\}\}$/}
do_test trace3-3.3 {
  set ::stmtlist(record) {}
  db trace_v2 trace_v2_record
  execsql {
    SELECT a, b FROM t1 ORDER BY a;
  }
  set ::stmtlist(record)
} {/^\{-?\d+ \{SELECT a, b FROM t1 ORDER BY a;\}\}$/}

do_test trace3-4.1 {
  set ::stmtlist(record) {}
  db trace_v2 trace_v2_record profile
  execsql {
    SELECT a, b FROM t1 ORDER BY a;
  }
  set ::stmtlist(record)
} {/^\{-?\d+ -?\d+\}$/}

do_test trace3-5.1 {
  set ::stmtlist(record) {}
  db trace_v2 trace_v2_record row
  execsql {
    SELECT a, b FROM t1 ORDER BY a;
  }
  set ::stmtlist(record)
} "/^[string trim [string repeat {\d+ } 16]]\$/"

do_test trace3-6.1 {
  set ::stmtlist(record) {}
  db trace_v2 trace_v2_record {profile row}
  execsql {
    SELECT a, b FROM t1 ORDER BY a;
  }
  set ::stmtlist(record)
} "/^[string trim [string repeat {-?\d+ } 16]] \\\{-?\\d+ -?\\d+\\\}\$/"

do_test trace3-7.1 {
  set ::stmtlist(record) {}
  db trace_v2 trace_v2_record close
  db close
  set ::stmtlist(record)
} {/^-?\d+$/}

finish_test