neo-go/pkg/vm/stack/boolean.go
dauTT afe670f178 VM: Implement, ABS, NOT opcode (#233)
* Implemented, ABS, NOT opcode
2019-03-28 19:26:55 +00:00

32 lines
700 B
Go

package stack
// Boolean represents a boolean value on the stack
type Boolean struct {
*abstractItem
val bool
}
//NewBoolean returns a new boolean stack item
func NewBoolean(val bool) *Boolean {
return &Boolean{
&abstractItem{},
val,
}
}
// Boolean overrides the default implementation
// by the abstractItem, returning a Boolean struct
func (b *Boolean) Boolean() (*Boolean, error) {
return b, nil
}
// Value returns the underlying boolean value
func (b *Boolean) Value() bool {
return b.val
}
// Not returns a Boolean whose underlying value is flipped.
// If the value is True, it is flipped to False and viceversa
func (b *Boolean) Not() *Boolean {
return NewBoolean(!b.Value())
}