dagger2.internal.codegen.writer.WildcardName.java Source code

Introduction

Here is the source code for dagger2.internal.codegen.writer.WildcardName.java

Source

/*
 * Copyright (C) 2014 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 dagger2.internal.codegen.writer;

import com.google.common.base.Optional;
import com.google.common.collect.ImmutableSet;
import java.io.IOException;
import java.util.Set;
import javax.lang.model.type.WildcardType;

import static dagger2.internal.codegen.writer.TypeNames.FOR_TYPE_MIRROR;

public final class WildcardName implements TypeName {
    private final Optional<TypeName> extendsBound;
    private final Optional<TypeName> superBound;

    WildcardName(Optional<TypeName> extendsBound, Optional<TypeName> superBound) {
        this.extendsBound = extendsBound;
        this.superBound = superBound;
    }

    static WildcardName forTypeMirror(WildcardType mirror) {
        return new WildcardName(Optional.fromNullable(mirror.getExtendsBound()).transform(FOR_TYPE_MIRROR),
                Optional.fromNullable(mirror.getSuperBound()).transform(FOR_TYPE_MIRROR));
    }

    @Override
    public Set<ClassName> referencedClasses() {
        ImmutableSet.Builder<ClassName> builder = new ImmutableSet.Builder<ClassName>();
        if (extendsBound.isPresent()) {
            builder.addAll(extendsBound.get().referencedClasses());
        }
        if (superBound.isPresent()) {
            builder.addAll(superBound.get().referencedClasses());
        }
        return builder.build();
    }

    @Override
    public Appendable write(Appendable appendable, Context context) throws IOException {
        appendable.append('?');
        if (extendsBound.isPresent()) {
            appendable.append(" extends ");
            extendsBound.get().write(appendable, context);
        }
        if (superBound.isPresent()) {
            appendable.append(" super ");
            superBound.get().write(appendable, context);
        }
        return appendable;
    }
}