1 /* 2 * Copyright (C) 2014 Google, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package dagger.internal.codegen.writer; 17 18 import com.google.common.base.Optional; 19 import com.google.common.collect.ImmutableSet; 20 import java.io.IOException; 21 import java.util.Set; 22 import javax.lang.model.type.WildcardType; 23 24 import static dagger.internal.codegen.writer.TypeNames.FOR_TYPE_MIRROR; 25 26 public final class WildcardName implements TypeName { 27 private final Optional<TypeName> extendsBound; 28 private final Optional<TypeName> superBound; 29 WildcardName(Optional<TypeName> extendsBound, Optional<TypeName> superBound)30 WildcardName(Optional<TypeName> extendsBound, 31 Optional<TypeName> superBound) { 32 this.extendsBound = extendsBound; 33 this.superBound = superBound; 34 } 35 forTypeMirror(WildcardType mirror)36 static WildcardName forTypeMirror(WildcardType mirror) { 37 return new WildcardName( 38 Optional.fromNullable(mirror.getExtendsBound()).transform(FOR_TYPE_MIRROR), 39 Optional.fromNullable(mirror.getSuperBound()).transform(FOR_TYPE_MIRROR)); 40 } 41 42 @Override referencedClasses()43 public Set<ClassName> referencedClasses() { 44 ImmutableSet.Builder<ClassName> builder = new ImmutableSet.Builder<ClassName>(); 45 if (extendsBound.isPresent()) { 46 builder.addAll(extendsBound.get().referencedClasses()); 47 } 48 if (superBound.isPresent()) { 49 builder.addAll(superBound.get().referencedClasses()); 50 } 51 return builder.build(); 52 } 53 54 @Override write(Appendable appendable, Context context)55 public Appendable write(Appendable appendable, Context context) throws IOException { 56 appendable.append('?'); 57 if (extendsBound.isPresent()) { 58 appendable.append(" extends "); 59 extendsBound.get().write(appendable, context); 60 } 61 if (superBound.isPresent()) { 62 appendable.append(" super "); 63 superBound.get().write(appendable, context); 64 } 65 return appendable; 66 } 67 } 68