IdenticalOperation.ceylon
"An identity test operation.
Defined natively, on objects that satisfy [[Identifiable]]. No associativity.
Examples:
node === rootNode
this === zero"
shared class IdenticalOperation(leftOperand, rightOperand)
extends EqualityOperation() {
shared actual ComparingExpression leftOperand;
shared actual ComparingExpression rightOperand;
shared actual [ComparingExpression, ComparingExpression] children = [leftOperand, rightOperand];
operator = "===";
shared actual Result transform<out Result>(Transformer<Result> transformer)
=> transformer.transformIdenticalOperation(this);
shared actual void visit(Visitor visitor)
=> visitor.visitIdenticalOperation(this);
shared actual Boolean equals(Object that) {
if (is IdenticalOperation that) {
return leftOperand == that.leftOperand && rightOperand == that.rightOperand;
} else {
return false;
}
}
shared actual Integer hash
=> 31 * (leftOperand.hash + 31 * rightOperand.hash);
shared IdenticalOperation copy(ComparingExpression leftOperand = this.leftOperand, ComparingExpression rightOperand = this.rightOperand) {
value ret = IdenticalOperation(leftOperand, rightOperand);
copyExtraInfoTo(ret);
return ret;
}
}