UnionAssignmentOperation.ceylon
"A union assignment operation.
Right-associative.
Examples:
students |= course.students
allElements |= elements"
see (`class UnionOperation`)
shared class UnionAssignmentOperation(target, other)
extends SetAssignmentOperation() {
"The target expression and left operand."
shared ThenElseExpression target;
"The right operand."
shared AssigningExpression other;
"The target expression and left operand."
see (`value target`)
shared actual ThenElseExpression leftOperand = target;
"The right operand."
see (`value other`)
shared actual AssigningExpression rightOperand = other;
shared actual [ThenElseExpression, AssigningExpression] children = [leftOperand, rightOperand];
operator = "|=";
shared actual Result transform<out Result>(Transformer<Result> transformer)
=> transformer.transformUnionAssignmentOperation(this);
shared actual Boolean equals(Object that) {
if (is UnionAssignmentOperation that) {
return leftOperand == that.leftOperand && rightOperand == that.rightOperand;
} else {
return false;
}
}
shared actual Integer hash
=> 31 * (leftOperand.hash + 31 * rightOperand.hash);
shared UnionAssignmentOperation copy(ThenElseExpression leftOperand = this.leftOperand, AssigningExpression rightOperand = this.rightOperand) {
value ret = UnionAssignmentOperation(leftOperand, rightOperand);
copyExtraInfoTo(ret);
return ret;
}
}