Ejemplo n.º 1
0
func (o *BinaryOperation) evalPlus(a interface{}, b interface{}) (interface{}, error) {
	switch x := a.(type) {
	case int64:
		switch y := b.(type) {
		case int64:
			return types.AddInt64(x, y)
		case uint64:
			return types.AddInteger(y, x)
		}
	case uint64:
		switch y := b.(type) {
		case int64:
			return types.AddInteger(x, y)
		case uint64:
			return types.AddUint64(x, y)
		}
	case float64:
		switch y := b.(type) {
		case float64:
			return x + y, nil
		}
	case mysql.Decimal:
		switch y := b.(type) {
		case mysql.Decimal:
			return x.Add(y), nil
		}
	}

	return types.InvOp2(a, b, opcode.Plus)
}
Ejemplo n.º 2
0
func computePlus(a, b types.Datum) (d types.Datum, err error) {
	switch a.Kind() {
	case types.KindInt64:
		switch b.Kind() {
		case types.KindInt64:
			r, err1 := types.AddInt64(a.GetInt64(), b.GetInt64())
			d.SetInt64(r)
			return d, errors.Trace(err1)
		case types.KindUint64:
			r, err1 := types.AddInteger(b.GetUint64(), a.GetInt64())
			d.SetUint64(r)
			return d, errors.Trace(err1)
		}
	case types.KindUint64:
		switch b.Kind() {
		case types.KindInt64:
			r, err1 := types.AddInteger(a.GetUint64(), b.GetInt64())
			d.SetUint64(r)
			return d, errors.Trace(err1)
		case types.KindUint64:
			r, err1 := types.AddUint64(a.GetUint64(), b.GetUint64())
			d.SetUint64(r)
			return d, errors.Trace(err1)
		}
	case types.KindFloat64:
		switch b.Kind() {
		case types.KindFloat64:
			r := a.GetFloat64() + b.GetFloat64()
			d.SetFloat64(r)
			return d, nil
		}
	case types.KindMysqlDecimal:
		switch b.Kind() {
		case types.KindMysqlDecimal:
			r := a.GetMysqlDecimal().Add(b.GetMysqlDecimal())
			d.SetMysqlDecimal(r)
			return d, nil
		}
	}
	_, err = types.InvOp2(a.GetValue(), b.GetValue(), opcode.Plus)
	return d, err
}