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package objects
import (
"math"
"strconv"
"github.com/d5/tengo/compiler/token"
)
// Float represents a floating point number value.
type Float struct {
Value float64
}
func (o *Float) String() string {
return strconv.FormatFloat(o.Value, 'f', -1, 64)
}
// TypeName returns the name of the type.
func (o *Float) TypeName() string {
return "float"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Float) BinaryOp(op token.Token, rhs Object) (Object, error) {
switch rhs := rhs.(type) {
case *Float:
switch op {
case token.Add:
r := o.Value + rhs.Value
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Sub:
r := o.Value - rhs.Value
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Mul:
r := o.Value * rhs.Value
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Quo:
r := o.Value / rhs.Value
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Less:
if o.Value < rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.Greater:
if o.Value > rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.LessEq:
if o.Value <= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.GreaterEq:
if o.Value >= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
}
case *Int:
switch op {
case token.Add:
r := o.Value + float64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Sub:
r := o.Value - float64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Mul:
r := o.Value * float64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Quo:
r := o.Value / float64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Less:
if o.Value < float64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.Greater:
if o.Value > float64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.LessEq:
if o.Value <= float64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.GreaterEq:
if o.Value >= float64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
}
}
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *Float) Copy() Object {
return &Float{Value: o.Value}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Float) IsFalsy() bool {
return math.IsNaN(o.Value)
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Float) Equals(x Object) bool {
t, ok := x.(*Float)
if !ok {
return false
}
return o.Value == t.Value
}
|
