NotOperation.ceylon
"A logical not expression.
Right-associative.
Examples:
!n in primes
!predicate(element)"
shared class NotOperation(operand)
extends UnaryOperation() {
"The negated expression."
shared actual NegatingExpression operand;
shared actual [NegatingExpression] children = [operand];
operator = "!";
prefix = true;
shared actual Result transform<out Result>(Transformer<Result> transformer)
=> transformer.transformNotOperation(this);
shared actual Boolean equals(Object that) {
if (is NotOperation that) {
return operand == that.operand;
} else {
return false;
}
}
shared actual Integer hash
=> 31 * operand.hash;
shared NotOperation copy(NegatingExpression operand = this.operand) {
value ret = NotOperation(operand);
copyExtraInfoTo(ret);
return ret;
}
}