type traceRecorder struct {
	Interface
	BeginAt      time.Time
	SQL          string
	RowsAffected int64
	Err          error
}

// New trace recorder
func (l *traceRecorder) New() *traceRecorder {
	return &traceRecorder{Interface: l.Interface, BeginAt: time.Now()}
}

// Trace implement logger interface
func (l *traceRecorder) Trace(ctx context.Context, begin time.Time, fc func() (string, int64), err error) {

  const auto num_results = std::max(lhs_vals.size(), rhs_vals.size());
  std::vector<ResultType> res;
  res.reserve(num_results);

  auto lhs_start = lhs_vals.begin();
  auto rhs_start = rhs_vals.begin();

  for (int i = 0; i < num_results; ++i) {
    auto lhs_val = lhs_splat ? *lhs_start : *(lhs_start++);
    auto rhs_val = rhs_splat ? *rhs_start : *(rhs_start++);

	db.PreparedSQL = append(db.PreparedSQL, query)
	db.Mux.Unlock()

	return cacheStmt, nil
}

func (db *PreparedStmtDB) BeginTx(ctx context.Context, opt *sql.TxOptions) (ConnPool, error) {
	if beginner, ok := db.ConnPool.(TxBeginner); ok {
		tx, err := beginner.BeginTx(ctx, opt)
		return &PreparedStmtTX{PreparedStmtDB: db, Tx: tx}, err
	}

	beginner, ok := db.ConnPool.(ConnPoolBeginner)
	if !ok {

	var claims []string
	findEndBracket := func(begin int) int {
		if begin >= len(s) || s[begin] != '[' {
			return -1
		}
		for i := begin + 1; i < len(s); i++ {
			if s[i] == '[' {
				return -1
			}
			if s[i] == ']' {
				return i
			}
		}
		return -1
	}
	for begin := 0; begin < len(s); {
		end := findEndBracket(begin)
		if end == -1 {
			ret, err := extractNameInBrackets(s)

// Adds `attrs` to all the operations between `begin` and `end`. Does not
// include `end`. The operations might be across multiple  blocks.
void AddAttributes(Block::iterator begin, Block::iterator end,
                   const NamedAttrList& attrs) {
  if (begin->getBlock() == end->getBlock()) {
    AddAttributesInSameBlock(begin, end, attrs);
  } else {
    Region::iterator begin_block = Region::iterator(begin->getBlock());

}

func (S Tracer) Error(ctx context.Context, s string, i ...interface{}) {
	S.Logger.Error(ctx, s, i...)
}

func (S Tracer) Trace(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
	S.Logger.Trace(ctx, begin, fc, err)
	S.Test(ctx, begin, fc, err)

  mlir::Block& body = func.front();
  // Find region of interest and ReturnOp.
  auto copy_range = body.without_terminator();
  if (copy_range.begin() != copy_range.end() &&
      std::next(copy_range.begin()) == copy_range.end() &&
      isa<tf_executor::GraphOp>(*copy_range.begin())) {
    // Already a graph.
    return;
  }

  auto return_op = dyn_cast<func::ReturnOp>(body.getTerminator());
  if (!return_op) {

      : $for j, [[g$(j)_(g$j)]] {}
  virtual ~CartesianProductGenerator$i() {}

  virtual ParamIteratorInterface<ParamType>* Begin() const {
    return new Iterator(this, $for j, [[g$(j)_, g$(j)_.begin()]]);
  }
  virtual ParamIteratorInterface<ParamType>* End() const {
    return new Iterator(this, $for j, [[g$(j)_, g$(j)_.end()]]);
  }

 private:

include "mhlo/IR/hlo_ops.td"


// See the function doc in the header file.
def GetPadOpType : NativeCodeCall<
  "GetPadOpType((*$0.begin()).getDefiningOp<mhlo::CompositeOp>())">;

// See the function doc in the header file.
def GetAvgPoolOpPadAttr: 
  NativeCodeCall<"GetAvgPoolOpPadAttr($_builder, (*$0.begin()).getDefiningOp<mhlo::CompositeOp>())">;

// Returns true if the provided padding in the composite op can *not* be 

            // line 2
            buildscript {
                // line 4
            }
        """.replaceIndent()
        val begin = original.indexOf("buildscript")
        val end = original.indexOf("}")
        assertThat(
            original.linePreservingSubstring(begin..end),
            equalTo(
                """


                buildscript {
                    // line 4