| /* |
| * Copyright 2008 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.dev; |
| |
| import com.google.gwt.dev.cfg.BindingProps; |
| import com.google.gwt.dev.cfg.PermProps; |
| import com.google.gwt.thirdparty.guava.common.collect.Lists; |
| |
| import java.io.Serializable; |
| import java.util.List; |
| import java.util.SortedSet; |
| |
| /** |
| * Represents the state of a single permutation for compile. |
| */ |
| public final class Permutation implements Serializable { |
| |
| private final int id; |
| |
| private List<BindingProps> orderedProps = Lists.newArrayList(); |
| private List<GwtCreateMap> gwtCreateAnswers = Lists.newArrayList(); |
| |
| /** |
| * Clones an existing permutation, but with a new id. |
| * |
| * @param id new permutation id |
| * @param other Permutation to copy |
| */ |
| public Permutation(int id, Permutation other) { |
| this.id = id; |
| orderedProps = Lists.newArrayList(other.orderedProps); |
| gwtCreateAnswers = Lists.newArrayList(other.gwtCreateAnswers); |
| } |
| |
| public Permutation(int id, BindingProps props) { |
| this.id = id; |
| orderedProps.add(props); |
| gwtCreateAnswers.add(new GwtCreateMap()); |
| } |
| |
| public int getId() { |
| return id; |
| } |
| |
| /** |
| * Returns the GWT.create() answers for each soft permutation, |
| * ordered by soft permutation id. |
| */ |
| public List<GwtCreateMap> getGwtCreateAnswers() { |
| return Lists.newArrayList(gwtCreateAnswers); |
| } |
| |
| /** |
| * Returns the properties to be used for generating this (hard) permutation. |
| */ |
| public PermProps getProps() { |
| return new PermProps(orderedProps); |
| } |
| |
| /** |
| * This is called to merge two permutations that either have identical rebind |
| * answers or were explicitly collapsed using <collapse-property>. |
| */ |
| public void mergeFrom(Permutation other, SortedSet<String> liveRebindRequests) { |
| if (getClass().desiredAssertionStatus()) { |
| // Traverse and compare in unison. |
| assertSameAnswers(liveRebindRequests, gwtCreateAnswers, other.gwtCreateAnswers); |
| } |
| mergeRebindsFromCollapsed(other); |
| } |
| |
| /** |
| * This is called to collapse one permutation into another where the rebinds |
| * vary between the two permutations. |
| */ |
| public void mergeRebindsFromCollapsed(Permutation other) { |
| assert other.orderedProps.size() == other.gwtCreateAnswers.size(); |
| orderedProps.addAll(other.orderedProps); |
| gwtCreateAnswers.addAll(other.gwtCreateAnswers); |
| other.destroy(); |
| } |
| |
| public void putRebindAnswer(String requestType, String resultType) { |
| assert gwtCreateAnswers.size() == 1 : "Cannot add rebind to merged Permutation"; |
| GwtCreateMap answerMap = gwtCreateAnswers.get(0); |
| assert answerMap != null; |
| answerMap.put(requestType, resultType); |
| } |
| |
| private static void assertSameAnswers(SortedSet<String> liveRebindRequests, |
| List<GwtCreateMap> theseAnswers, List<GwtCreateMap> thoseAnswers) { |
| assert theseAnswers.size() == thoseAnswers.size(); |
| for (int i = 0; i < theseAnswers.size(); i++) { |
| theseAnswers.get(i).assertSameAnswers(thoseAnswers.get(i), liveRebindRequests); |
| } |
| } |
| |
| /** |
| * Clear the state of the Permutation. This aids the correctness-checking code |
| * in {@link #mergeFrom}. |
| */ |
| private void destroy() { |
| orderedProps = Lists.newArrayList(); |
| gwtCreateAnswers = Lists.newArrayList(); |
| } |
| } |