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// Copyright 2016 The Bazel Authors. All rights reserved.
//
// 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 com.google.devtools.build.android;
import com.google.devtools.build.android.xml.Namespaces;
import java.io.IOException;
import java.io.OutputStream;
/** An {@link XmlResourceValue} is extracted from xml files in the resource 'values' directory. */
public interface XmlResourceValue {
/**
* Each XmlValue is expected to write a valid representation in xml to the writer.
*
* @param key The FullyQualified name for the xml resource being written.
* @param source The source of the value to allow for proper comment annotation.
* @param mergedDataWriter The target writer.
*/
void write(FullyQualifiedName key, DataSource source, AndroidDataWritingVisitor mergedDataWriter);
/** Serializes the resource value to the OutputStream and returns the bytes written. */
int serializeTo(int sourceId, Namespaces namespaces, OutputStream out) throws IOException;
/**
* Combines these xml values together and returns a single value.
*
* @param value Another resource to be combined with this one.
* @return A union of the values of these two values.
* @throws IllegalArgumentException if either value cannot combine with the other.
*/
XmlResourceValue combineWith(XmlResourceValue value);
/**
* Queue up writing the resource to the given {@link AndroidResourceClassWriter}. Each resource
* can generate one or more (in the case of styleable) fields and inner classes in the R class.
*
* @param key The FullyQualifiedName of the resource
* @param sink the symbol sink for producing source and classes
*/
void writeResourceToClass(FullyQualifiedName key, AndroidResourceSymbolSink sink);
/** Returns a representation of the xml value as a string suitable for conflict messages. */
String asConflictStringWith(DataSource source);
}
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