123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112 |
- /*
- * Copyright (c) 2006-2010 Chris Smith, Shane Mc Cormack, Gregory Holmes
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.addons.calc;
-
- import java.util.ArrayList;
- import java.util.List;
-
- /**
- * Describes a tree of {@link Token}s.
- *
- * @author chris
- */
- public class TreeToken {
-
- /** The children of this node. */
- private final List<TreeToken> children = new ArrayList<TreeToken>();
-
- /** The token at the root of the tree. */
- private final Token token;
-
- /** Whether or not this tree has been processed. */
- private boolean processed = false;
-
- /**
- * Creates a new tree with the specified token at the root.
- *
- * @param token The root token
- */
- public TreeToken(final Token token) {
- this.token = token;
- }
-
- /**
- * Retrieves the (direct) children of this tree.
- *
- * @return This tree's children
- */
- public List<TreeToken> getChildren() {
- return children;
- }
-
- /**
- * Retrieves the root token of this tree.
- *
- * @return This tree's token
- */
- public Token getToken() {
- return token;
- }
-
- /**
- * Adds the specified child to this tree.
- *
- * @param token The child to be added
- */
- public void addChild(final TreeToken token) {
- children.add(token);
- }
-
- /**
- * Determines if this tree has been processed.
- *
- * @return True if the tree has been processed, false otherwise
- */
- public boolean isProcessed() {
- return processed;
- }
-
- /**
- * Sets the processed flag of this tree to true.
- */
- public void setProcessed() {
- processed = true;
- }
-
- /**
- * Evaluates this tree to return a number.
- *
- * @return A numerical evaluation of this tree.
- */
- public Number evaluate() {
- return token.getType().evaluate(this);
- }
-
- /** {@inheritDoc} */
- @Override
- public String toString() {
- return "[token: " + token + "; children: " + children + "; processed: "
- + processed + "]";
- }
-
- }
|