func (self *Div) Call(args ...value.Value) value.Value {
var result float64
for i, item := range args {
switch operand := item.(type) {
case *value.Int:
if operand.Value == 0 {
panic(fmt.Errorf("%v: division by zero", self.String()))
}
if i == 0 {
result = float64(operand.Value)
} else {
result /= float64(operand.Value)
}
case *value.Float:
if operand.Value == 0 {
panic(fmt.Errorf("%v: division by zero", self.String()))
}
if i == 0 {
result = operand.Value
} else {
result /= operand.Value
}
default:
panic(fmt.Errorf("%v: unexpected number", self.String()))
}
}
return value.NewFloat(result)
}
func (self *Mul) Call(args ...value.Value) value.Value {
var result float64 = 1
isfloat := false
for _, item := range args {
switch operand := item.(type) {
case *value.Int:
result *= float64(operand.Value)
case *value.Float:
isfloat = true
result *= operand.Value
default:
panic(fmt.Errorf("%v: unexpected number", self.String()))
}
}
if isfloat {
return value.NewFloat(result)
}
return value.NewInt(int64(result))
}
func (self *Float) Eval(env *scope.Scope) value.Value {
return value.NewFloat(self.value)
}