Refactor VM and operators

internal/object/bool.go

@@ -35,6 +35,24 @@ func (b *Boolean) Int() int {
 	return 0
 }
 
+func (b *Boolean) LogicalAnd(other Object) (Object, error) {
+	if !AssertTypes(other, BooleanType, IntegerType) {
+		return nil, NewBinaryOpError(b, other, "&&")
+	}
+	return &Boolean{b.Value && other.Bool()}, nil
+}
+
+func (b *Boolean) LogicalOr(other Object) (Object, error) {
+	if !AssertTypes(other, BooleanType, IntegerType) {
+		return nil, NewBinaryOpError(b, other, "||")
+	}
+	return &Boolean{b.Value || other.Bool()}, nil
+}
+
+func (b *Boolean) LogicalNot() Object {
+	return &Boolean{!b.Value}
+}
+
 func (b *Boolean) Compare(other Object) int {
 	if obj, ok := other.(*Boolean); ok {
 		return b.Int() - obj.Int()