Method Enter

pkg/parser/parser_test.go:6934–7015

Enter implements Visitor interface.

(in ast.Node)

// Enter implements Visitor interface.
func (checker *nodeTextCleaner) Enter(in ast.Node) (out ast.Node, skipChildren bool) {
	in.SetText(nil, "")
	in.SetOriginTextPosition(0)
	if v, ok := in.(ast.ValueExpr); ok && v != nil {
		tpFlag := v.GetType().GetFlag()
		if tpFlag&mysql.UnderScoreCharsetFlag != 0 {
			// ignore underscore charset flag to let `'abc' = _utf8'abc'` pass
			tpFlag ^= mysql.UnderScoreCharsetFlag
			v.GetType().SetFlag(tpFlag)
		}
	}

	switch node := in.(type) {
	case *ast.CreateTableStmt:
		for _, opt := range node.Options {
			switch opt.Tp {
			case ast.TableOptionCharset:
				opt.StrValue = strings.ToUpper(opt.StrValue)
			case ast.TableOptionCollate:
				opt.StrValue = strings.ToUpper(opt.StrValue)
			}
		}
		for _, col := range node.Cols {
			col.Tp.SetCharset(strings.ToUpper(col.Tp.GetCharset()))
			col.Tp.SetCollate(strings.ToUpper(col.Tp.GetCollate()))

			for i, option := range col.Options {
				if option.Tp == 0 && option.Expr == nil && !option.Stored && option.Refer == nil {
					col.Options = append(col.Options[:i], col.Options[i+1:]...)
				}
			}
		}
	case *ast.DeleteStmt:
		for _, tableHint := range node.TableHints {
			tableHint.HintName.O = ""
		}
	case *ast.UpdateStmt:
		for _, tableHint := range node.TableHints {
			tableHint.HintName.O = ""
		}
	case *ast.Constraint:
		if node.Option != nil {
			if node.Option.KeyBlockSize == 0x0 && node.Option.Tp == 0 && node.Option.Comment == "" {
				node.Option = nil
			}
		}
	case *ast.FuncCallExpr:
		node.FnName.O = strings.ToLower(node.FnName.O)
		node.SetOriginTextPosition(0)
	case *ast.AggregateFuncExpr:
		node.F = strings.ToLower(node.F)
	case *ast.SelectField:
		node.Offset = 0
	case *test_driver.ValueExpr:
		if node.Kind() == test_driver.KindMysqlDecimal {
			_ = node.GetMysqlDecimal().FromString(node.GetMysqlDecimal().ToString())
		}
	case *ast.GrantStmt: