ComparisonOperation.ceylon
"A comparison expression.
No associativity.
This is the abstract superclass of expressions like `a <= b` and `x > 3`;
not to be confused with [[CompareOperation]], the concrete class representing expressions like `first <=> second`!"
shared abstract class ComparisonOperation()
of LargerOperation | SmallerOperation | LargeAsOperation | SmallAsOperation
extends BinaryOperation() {
shared actual formal ExistsNonemptyExpression leftOperand;
shared actual formal ExistsNonemptyExpression rightOperand;
shared actual formal [ExistsNonemptyExpression, ExistsNonemptyExpression] children;
}