func (o *BinaryOperation) evalMul(a interface{}, b interface{}) (interface{}, error) {
switch x := a.(type) {
case int64:
switch y := b.(type) {
case int64:
return types.MulInt64(x, y)
case uint64:
return types.MulInteger(y, x)
}
case uint64:
switch y := b.(type) {
case int64:
return types.MulInteger(x, y)
case uint64:
return types.MulUint64(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.Mul(y), nil
}
}
return types.InvOp2(a, b, opcode.Mul)
}
func (o *BinaryOperation) evalPlus(a interface{}, b interface{}) (interface{}, error) {
// TODO: check overflow
switch x := a.(type) {
case int64:
switch y := b.(type) {
case int64:
return x + y, nil
case uint64:
// For MySQL, if any is unsigned, return unsigned
// TODO: check overflow
return uint64(x) + y, nil
}
case uint64:
switch y := b.(type) {
case int64:
// For MySQL, if any is unsigned, return unsigned
// TODO: check overflow
return x + uint64(y), nil
case uint64:
return x + y, nil
}
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)
}
func (o *BinaryOperation) evalMinus(a interface{}, b interface{}) (interface{}, error) {
switch x := a.(type) {
case int64:
switch y := b.(type) {
case int64:
return types.SubInt64(x, y)
case uint64:
return types.SubIntWithUint(x, y)
}
case uint64:
switch y := b.(type) {
case int64:
return types.SubUintWithInt(x, y)
case uint64:
return types.SubUint64(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.Sub(y), nil
}
}
return types.InvOp2(a, b, opcode.Minus)
}
func computePlus(a, 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)
}
func (o *BinaryOperation) evalMod(a interface{}, b interface{}) (interface{}, error) {
switch x := a.(type) {
case int64:
switch y := b.(type) {
case int64:
if y == 0 {
return nil, nil
}
return x % y, nil
case uint64:
if y == 0 {
return nil, nil
} else if x < 0 {
// TODO: check overflow
return -int64(uint64(-x) % y), nil
}
// TODO: check overflow
return uint64(x) % y, nil
}
case uint64:
switch y := b.(type) {
case int64:
if y == 0 {
return nil, nil
} else if y < 0 {
// TODO: check overflow
return -int64(x % uint64(-y)), nil
}
// TODO: check overflow
return x % uint64(y), nil
case uint64:
if y == 0 {
return nil, nil
}
return x % y, nil
}
case float64:
switch y := b.(type) {
case float64:
if y == 0 {
return nil, nil
}
return math.Mod(x, y), nil
}
case mysql.Decimal:
switch y := b.(type) {
case mysql.Decimal:
xf, _ := x.Float64()
yf, _ := y.Float64()
if yf == 0 {
return nil, nil
}
return math.Mod(xf, yf), nil
}
}
return types.InvOp2(a, b, opcode.Mod)
}
func computeMod(a, b interface{}) (interface{}, error) {
switch x := a.(type) {
case int64:
switch y := b.(type) {
case int64:
if y == 0 {
return nil, nil
}
return x % y, nil
case uint64:
if y == 0 {
return nil, nil
} else if x < 0 {
// first is int64, return int64.
return -int64(uint64(-x) % y), nil
}
return int64(uint64(x) % y), nil
}
case uint64:
switch y := b.(type) {
case int64:
if y == 0 {
return nil, nil
} else if y < 0 {
// first is uint64, return uint64.
return uint64(x % uint64(-y)), nil
}
return x % uint64(y), nil
case uint64:
if y == 0 {
return nil, nil
}
return x % y, nil
}
case float64:
switch y := b.(type) {
case float64:
if y == 0 {
return nil, nil
}
return math.Mod(x, y), nil
}
case mysql.Decimal:
switch y := b.(type) {
case mysql.Decimal:
xf, _ := x.Float64()
yf, _ := y.Float64()
if yf == 0 {
return nil, nil
}
return math.Mod(xf, yf), nil
}
}
return types.InvOp2(a, b, opcode.Mod)
}
func computeMul(a, b types.Datum) (d types.Datum, err error) {
switch a.Kind() {
case types.KindInt64:
switch b.Kind() {
case types.KindInt64:
r, err1 := types.MulInt64(a.GetInt64(), b.GetInt64())
d.SetInt64(r)
return d, errors.Trace(err1)
case types.KindUint64:
r, err1 := types.MulInteger(b.GetUint64(), a.GetInt64())
d.SetUint64(r)
return d, errors.Trace(err1)
}
case types.KindUint64:
switch b.Kind() {
case types.KindInt64:
r, err1 := types.MulInteger(a.GetUint64(), b.GetInt64())
d.SetUint64(r)
return d, errors.Trace(err1)
case types.KindUint64:
r, err1 := types.MulUint64(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().Mul(b.GetMysqlDecimal())
d.SetMysqlDecimal(r)
return d, nil
}
}
_, err = types.InvOp2(a.GetValue(), b.GetValue(), opcode.Mul)
return d, errors.Trace(err)
}
func computeMinus(a, b types.Datum) (d types.Datum, err error) {
switch a.Kind() {
case types.KindInt64:
switch b.Kind() {
case types.KindInt64:
r, err1 := types.SubInt64(a.GetInt64(), b.GetInt64())
d.SetInt64(r)
return d, errors.Trace(err1)
case types.KindUint64:
r, err1 := types.SubIntWithUint(a.GetInt64(), b.GetUint64())
d.SetUint64(r)
return d, errors.Trace(err1)
}
case types.KindUint64:
switch b.Kind() {
case types.KindInt64:
r, err1 := types.SubUintWithInt(a.GetUint64(), b.GetInt64())
d.SetUint64(r)
return d, errors.Trace(err1)
case types.KindUint64:
r, err1 := types.SubUint64(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().Sub(b.GetMysqlDecimal())
d.SetMysqlDecimal(r)
return d, nil
}
}
_, err = types.InvOp2(a.GetValue(), b.GetValue(), opcode.Minus)
return d, errors.Trace(err)
}
func (o *BinaryOperation) evalMul(a interface{}, b interface{}) (interface{}, error) {
// TODO: check overflow
switch x := a.(type) {
case int64:
switch y := b.(type) {
case int64:
return x * y, nil
case uint64:
// For MySQL, if any is unsigned, return unsigned
// TODO: check overflow and negative number
// if a negative int64 * uint64, MySQL may throw "BIGINT UNSIGNED value is out of range" error
// we skip it now and handle it later.
return uint64(x) * y, nil
}
case uint64:
switch y := b.(type) {
case int64:
// For MySQL, if any is unsigned, return unsigned
// TODO: check overflow
return x * uint64(y), nil
case uint64:
return x * y, nil
}
case float64:
switch y := b.(type) {
case float64:
return x * y, nil
}
case mysql.Decimal:
switch y := b.(type) {
case mysql.Decimal:
return x.Mul(y), nil
}
}
return types.InvOp2(a, b, opcode.Mul)
}
func computeMod(a, b types.Datum) (d types.Datum, err error) {
switch a.Kind() {
case types.KindInt64:
x := a.GetInt64()
switch b.Kind() {
case types.KindInt64:
y := b.GetInt64()
if y == 0 {
return d, nil
}
d.SetInt64(x % y)
return d, nil
case types.KindUint64:
y := b.GetUint64()
if y == 0 {
return d, nil
} else if x < 0 {
d.SetInt64(-int64(uint64(-x) % y))
// first is int64, return int64.
return d, nil
}
d.SetInt64(int64(uint64(x) % y))
return d, nil
}
case types.KindUint64:
x := a.GetUint64()
switch b.Kind() {
case types.KindInt64:
y := b.GetInt64()
if y == 0 {
return d, nil
} else if y < 0 {
// first is uint64, return uint64.
d.SetUint64(uint64(x % uint64(-y)))
return d, nil
}
d.SetUint64(x % uint64(y))
return d, nil
case types.KindUint64:
y := b.GetUint64()
if y == 0 {
return d, nil
}
d.SetUint64(x % y)
return d, nil
}
case types.KindFloat64:
x := a.GetFloat64()
switch b.Kind() {
case types.KindFloat64:
y := b.GetFloat64()
if y == 0 {
return d, nil
}
d.SetFloat64(math.Mod(x, y))
return d, nil
}
case types.KindMysqlDecimal:
x := a.GetMysqlDecimal()
switch b.Kind() {
case types.KindMysqlDecimal:
y := b.GetMysqlDecimal()
xf, _ := x.Float64()
yf, _ := y.Float64()
if yf == 0 {
return d, nil
}
d.SetFloat64(math.Mod(xf, yf))
return d, nil
}
}
_, err = types.InvOp2(a.GetValue(), b.GetValue(), opcode.Mod)
return d, errors.Trace(err)
}