31 lines
749 B
Java
31 lines
749 B
Java
package utility.euler_tour.expressions;
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import utility.euler_tour.EulerTour;
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import position.Position;
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import tree.binarytree.BinaryTree;
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/**
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* Created with MONSTER.
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* User: xgiovio
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* Date: 27/04/2014
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* Time: 13:09
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*/
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public class EvaluateExpressionTour extends EulerTour<ExpressionTerm,Integer> {
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public Integer execute(BinaryTree<ExpressionTerm> T) {
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init(T);
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return eulerTour(tree.root());
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}
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protected void visitRight(Position<ExpressionTerm> v, TourResult<Integer> r) {
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ExpressionTerm term = v.element();
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if (tree.isInternal(v)) {
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ExpressionOperator op = (ExpressionOperator) term;
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op.setOperands(r.left, r.right);
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}
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r.out = term.getValue();
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}
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}
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