/**
* Gets a short <code>String</code> representation of the node's formula.
*
* @param auxiliaryNode2id auxiliary node to id mapping
* @param constantNode2id constant node to id mapping
* @param levelNode2id level node to id mapping
* @return short <code>String</code> representation of the node's formula
*/
public String getShortStringRepresentation(
HashMap<AuxiliaryNode, Integer> auxiliaryNode2id,
HashMap<ConstantNode, Integer> constantNode2id,
HashMap<LevelNode, Integer> levelNode2id) {
if (auxiliaryNode2id == null) {
throw new IllegalArgumentException("'auxiliaryNode2id' must not be null.");
}
if (constantNode2id == null) {
throw new IllegalArgumentException("'constantNode2id' must not be null.");
}
if (levelNode2id == null) {
throw new IllegalArgumentException("'levelNode2id' must not be null.");
}
if (rightElement instanceof ASTPlus || rightElement instanceof ASTMinus) {
return leftElement.getShortStringRepresentation(
auxiliaryNode2id, constantNode2id, levelNode2id)
+ " - ("
+ rightElement.getShortStringRepresentation(
auxiliaryNode2id, constantNode2id, levelNode2id)
+ ")";
} else {
return leftElement.getShortStringRepresentation(
auxiliaryNode2id, constantNode2id, levelNode2id)
+ " - "
+ rightElement.getShortStringRepresentation(
auxiliaryNode2id, constantNode2id, levelNode2id);
}
}
/**
* Creates and returns a <b>deep</b> copy of this object. Only the nodes in the leaves are not
* cloned.
*
* @return a deep clone of this instance
*/
@Override
public Object clone() {
ASTElement leftClone = (ASTElement) leftElement.clone();
ASTElement rightClone = (ASTElement) rightElement.clone();
return new ASTMinus(leftClone, rightClone);
}
/**
* Gets a <code>String</code> representation of the node's formula.
*
* @return <code>String</code> representation of the node's formula
*/
public String getStringRepresentation() {
if (rightElement instanceof ASTPlus || rightElement instanceof ASTMinus) {
return leftElement.getStringRepresentation()
+ " - ("
+ rightElement.getStringRepresentation()
+ ")";
} else {
return leftElement.getStringRepresentation() + " - " + rightElement.getStringRepresentation();
}
}
/**
* Gets all nodes in this AST subtree (inclusive this ASTElement).
*
* @return set of all nodes in AST subtree
*/
public HashSet<AbstractNode> getAllNodesInASTSubtree() {
HashSet<AbstractNode> nodeSet = leftElement.getAllNodesInASTSubtree();
nodeSet.addAll(rightElement.getAllNodesInASTSubtree());
return nodeSet;
}
/**
* Evaluates the ASTElement.
*
* @return ASTElement value
*/
public double evaluate() {
return leftElement.evaluate() - rightElement.evaluate();
}