dagger.internal.codegen.writer.FieldWriter.java Source code

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Here is the source code for dagger.internal.codegen.writer.FieldWriter.java

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/*
 * 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 dagger.internal.codegen.writer;

import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import java.io.IOException;
import java.util.Set;

public final class FieldWriter extends VariableWriter {
    private Optional<Snippet> initializer;

    FieldWriter(TypeName type, String name) {
        super(type, name);
        this.initializer = Optional.absent();
    }

    public void setInitializer(Snippet initializer) {
        this.initializer = Optional.of(initializer);
    }

    public void setInitializer(String initializer, Object... args) {
        this.initializer = Optional.of(Snippet.format(initializer, args));
    }

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

    @Override
    public Set<ClassName> referencedClasses() {
        Iterable<? extends HasClassReferences> concat = Iterables.concat(ImmutableList.of(type()),
                initializer.asSet(), annotations);
        return FluentIterable.from(concat).transformAndConcat(new Function<HasClassReferences, Set<ClassName>>() {
            @Override
            public Set<ClassName> apply(HasClassReferences input) {
                return input.referencedClasses();
            }
        }).toSet();
    }
}