001package ball.game.scrabble; 002/*- 003 * ########################################################################## 004 * Game Applications and Utilities 005 * $Id: PremiumProcessor.java 5905 2020-05-11 01:35:29Z ball $ 006 * $HeadURL: svn+ssh://svn.hcf.dev/var/spool/scm/repository.svn/ball-game/trunk/src/main/java/ball/game/scrabble/PremiumProcessor.java $ 007 * %% 008 * Copyright (C) 2010 - 2020 Allen D. Ball 009 * %% 010 * Licensed under the Apache License, Version 2.0 (the "License"); 011 * you may not use this file except in compliance with the License. 012 * You may obtain a copy of the License at 013 * 014 * http://www.apache.org/licenses/LICENSE-2.0 015 * 016 * Unless required by applicable law or agreed to in writing, software 017 * distributed under the License is distributed on an "AS IS" BASIS, 018 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 019 * See the License for the specific language governing permissions and 020 * limitations under the License. 021 * ########################################################################## 022 */ 023import ball.annotation.ServiceProviderFor; 024import ball.annotation.processing.AnnotatedProcessor; 025import ball.annotation.processing.For; 026import java.util.Set; 027import javax.annotation.processing.Processor; 028import javax.annotation.processing.RoundEnvironment; 029import javax.lang.model.element.Element; 030import javax.lang.model.element.TypeElement; 031import lombok.NoArgsConstructor; 032import lombok.ToString; 033 034import static java.util.stream.Collectors.toSet; 035import static javax.lang.model.element.Modifier.ABSTRACT; 036import static javax.tools.Diagnostic.Kind.ERROR; 037 038/** 039 * {@link Processor} implementation to check {@link Class}es annotated with 040 * {@link LetterPremium} or {@link WordPremium}: 041 * <ol> 042 * <li value="1">Are an instance of {@link SQ},</li> 043 * <li value="2">Concrete, and</li> 044 * <li value="3"> 045 * Are annotated with only one of {@link LetterPremium} or 046 * {@link WordPremium} 047 * </li> 048 * </ol> 049 * 050 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball} 051 * @version $Revision: 5905 $ 052 */ 053@ServiceProviderFor({ Processor.class }) 054@For({ LetterPremium.class, WordPremium.class }) 055@NoArgsConstructor @ToString 056public class PremiumProcessor extends AnnotatedProcessor { 057 @Override 058 public void process(RoundEnvironment roundEnv, 059 TypeElement annotation, Element element) { 060 super.process(roundEnv, annotation, element); 061 062 switch (element.getKind()) { 063 case CLASS: 064 if (withoutModifiers(ABSTRACT).test(element)) { 065 Set<TypeElement> set = 066 getSupportedAnnotationTypeList() 067 .stream() 068 .filter(t -> element.getAnnotation(t) != null) 069 .map(t -> asTypeElement(t)) 070 .collect(toSet()); 071 072 set.remove(annotation); 073 074 if (! set.isEmpty()) { 075 print(ERROR, element, 076 "%s annotated with @%s but is also annotated with @%s", 077 element.getKind(), 078 annotation.getSimpleName(), 079 set.iterator().next().getSimpleName()); 080 } 081 } else { 082 print(ERROR, element, 083 "@%s: %s is %s", 084 annotation.getSimpleName(), element.getKind(), ABSTRACT); 085 } 086 break; 087 088 default: 089 break; 090 } 091 } 092}