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|
package objects
import (
"strconv"
"github.com/d5/tengo/compiler/token"
)
// Int represents an integer value.
type Int struct {
Value int64
}
func (o *Int) String() string {
return strconv.FormatInt(o.Value, 10)
}
// TypeName returns the name of the type.
func (o *Int) TypeName() string {
return "int"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Int) BinaryOp(op token.Token, rhs Object) (Object, error) {
switch rhs := rhs.(type) {
case *Int:
switch op {
case token.Add:
r := o.Value + rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.Sub:
r := o.Value - rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.Mul:
r := o.Value * rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.Quo:
r := o.Value / rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.Rem:
r := o.Value % rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.And:
r := o.Value & rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.Or:
r := o.Value | rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.Xor:
r := o.Value ^ rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.AndNot:
r := o.Value &^ rhs.Value
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.Shl:
r := o.Value << uint64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Int{Value: r}, nil
case token.Shr:
r := o.Value >> uint64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Int{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 *Float:
switch op {
case token.Add:
return &Float{float64(o.Value) + rhs.Value}, nil
case token.Sub:
return &Float{float64(o.Value) - rhs.Value}, nil
case token.Mul:
return &Float{float64(o.Value) * rhs.Value}, nil
case token.Quo:
return &Float{float64(o.Value) / rhs.Value}, nil
case token.Less:
if float64(o.Value) < rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.Greater:
if float64(o.Value) > rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.LessEq:
if float64(o.Value) <= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.GreaterEq:
if float64(o.Value) >= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
}
case *Char:
switch op {
case token.Add:
return &Char{rune(o.Value) + rhs.Value}, nil
case token.Sub:
return &Char{rune(o.Value) - rhs.Value}, nil
case token.Less:
if o.Value < int64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.Greater:
if o.Value > int64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.LessEq:
if o.Value <= int64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.GreaterEq:
if o.Value >= int64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
}
}
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *Int) Copy() Object {
return &Int{Value: o.Value}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Int) IsFalsy() bool {
return o.Value == 0
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Int) Equals(x Object) bool {
t, ok := x.(*Int)
if !ok {
return false
}
return o.Value == t.Value
}
|
