IsOperation.ceylon
"A postfix assignability test expression.
No associativity.
Examples:
element is String|Integer
user is ExecutiveUser"
shared class IsOperation(operand, type)
extends UnaryTypeOperation() {
"The expression whose type is tested."
shared actual ExistsNonemptyExpression operand;
"The type against which the expression’s type is tested."
shared actual Type type;
shared actual [ExistsNonemptyExpression, Type] children = [operand, type];
operator = "is";
shared actual Result transform<out Result>(Transformer<Result> transformer)
=> transformer.transformIsOperation(this);
shared actual void visit(Visitor visitor)
=> visitor.visitIsOperation(this);
shared actual Boolean equals(Object that) {
if (is IsOperation that) {
return operand == that.operand && type == that.type;
} else {
return false;
}
}
shared actual Integer hash
=> 31 * (operand.hash + 31 * type.hash);
shared IsOperation copy(ExistsNonemptyExpression operand = this.operand, Type type = this.type) {
value ret = IsOperation(operand, type);
copyExtraInfoTo(ret);
return ret;
}
}