Method Restore

parser/types/field_type.go:198–250

Restore implements Node interface.

(ctx *format.RestoreCtx)

// Restore implements Node interface.
func (ft *FieldType) Restore(ctx *format.RestoreCtx) error {
	ctx.WriteKeyWord(TypeToStr(ft.Tp, ft.Charset))

	switch ft.Tp {
	case mysql.TypeEnum, mysql.TypeSet:
		ctx.WritePlain("(")
		for i, e := range ft.Elems {
			if i != 0 {
				ctx.WritePlain(",")
			}
			ctx.WriteString(e)
		}
		ctx.WritePlain(")")
	case mysql.TypeTimestamp, mysql.TypeDatetime, mysql.TypeDuration:
		if ft.Flen > 0 && ft.Decimal > 0 {
			ctx.WritePlainf("(%d)", ft.Decimal)
		}
	case mysql.TypeDouble, mysql.TypeFloat:
		if ft.Flen > 0 && ft.Decimal > 0 {
			ctx.WritePlainf("(%d,%d)", ft.Flen, ft.Decimal)
		}
	case mysql.TypeNewDecimal:
		if ft.Flen > 0 && ft.Decimal > 0 {
			ctx.WritePlainf("(%d,%d)", ft.Flen, ft.Decimal)
		}
	case mysql.TypeBit, mysql.TypeShort, mysql.TypeTiny, mysql.TypeInt24, mysql.TypeLong, mysql.TypeLonglong, mysql.TypeVarchar, mysql.TypeString, mysql.TypeVarString, mysql.TypeTinyBlob, mysql.TypeMediumBlob, mysql.TypeBlob, mysql.TypeLongBlob, mysql.TypeYear:
		if ft.Flen > 0 {
			ctx.WritePlainf("(%d)", ft.Flen)
		}
	}

	if mysql.HasUnsignedFlag(ft.Flag) {
		ctx.WriteKeyWord(" UNSIGNED")
	}
	if mysql.HasZerofillFlag(ft.Flag) {
		ctx.WriteKeyWord(" ZEROFILL")
	}
	if mysql.HasBinaryFlag(ft.Flag) && ft.Charset != mysql.CharsetBin {
		ctx.WriteKeyWord(" BINARY")
	}

	if IsTypeChar(ft.Tp) || IsTypeBlob(ft.Tp) {
		if ft.Charset != "" && ft.Charset != mysql.CharsetBin {
			ctx.WriteKeyWord(" CHARACTER SET " + ft.Charset)
		}
		if ft.Collate != "" && ft.Collate != mysql.CharsetBin {
			ctx.WriteKeyWord(" COLLATE ")
			ctx.WritePlain(ft.Collate)
		}
	}

	return nil
}

// FormatAsCastType is used for write AST back to string.
func (ft *FieldType) FormatAsCastType(w io.Writer) {