| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.svg; |
| |
| import java.util.LinkedList; |
| import java.util.Queue; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| class OperatorValidator { |
| |
| private interface Match { |
| |
| boolean match(String line); |
| } |
| |
| private static class MatchSequence implements OperatorValidator.Match { |
| |
| private final Queue<OperatorValidator.Match> expectedMatches = new LinkedList<OperatorValidator.Match>(); |
| |
| private OperatorValidator.Match currentMatch; |
| |
| private static final OperatorValidator.Match FINAL_MATCH = new Match() { |
| |
| public boolean match(String line) { |
| return false; |
| } |
| }; |
| |
| public boolean isExhausted() { |
| return currentMatch == FINAL_MATCH; |
| } |
| |
| public void addMatch(OperatorValidator.Match match) { |
| if (currentMatch == null) { |
| currentMatch = match; |
| } else { |
| expectedMatches.add(match); |
| } |
| } |
| |
| public boolean match(String line) { |
| boolean match = currentMatch.match(line); |
| if (match) { |
| if (expectedMatches.isEmpty()) { |
| currentMatch = FINAL_MATCH; |
| } else { |
| currentMatch = expectedMatches.remove(); |
| } |
| } |
| return match; |
| } |
| } |
| |
| private static class OperatorMatch implements OperatorValidator.Match { |
| |
| final String operator; |
| |
| final String line; |
| |
| OperatorMatch(String operator, String line) { |
| this.operator = operator; |
| this.line = line; |
| } |
| |
| public boolean match(String line) { |
| if (line.contains(operator)) { |
| assertEquals(this.line, line); |
| return true; |
| } |
| return false; |
| } |
| } |
| |
| private final OperatorValidator.MatchSequence matchSequence = new MatchSequence(); |
| |
| public OperatorValidator addOperatorMatch(String operator, String expectedLine) { |
| matchSequence.addMatch(new OperatorMatch(operator, expectedLine)); |
| return this; |
| } |
| |
| public void check(String line) { |
| matchSequence.match(line); |
| } |
| |
| public void end() { |
| assertTrue("Expected operators remain", matchSequence.isExhausted()); |
| } |
| |
| } |