/*
* Copyright (c) 2012, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
*
* 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.dart.engine.source;
import java.net.URI;
/**
* The abstract class {@code UriResolver} defines the behavior of objects that are used to resolve
* URI's for a source factory. Subclasses of this class are expected to resolve a single scheme of
* absolute URI.
*
* @coverage dart.engine.source
*/
public abstract class UriResolver {
/**
* Initialize a newly created resolver.
*/
public UriResolver() {
super();
}
/**
* Resolve the given absolute URI. Return a {@link Source source} representing the file to which
* it was resolved, whether or not the resulting source exists, or {@code null} if it could not be
* resolved because the URI is invalid.
*
* @param uri the URI to be resolved
* @return a {@link Source source} representing the file to which given URI was resolved
*/
public abstract Source resolveAbsolute(URI uri);
/**
* Return an absolute URI that represents the given source, or {@code null} if a valid URI cannot
* be computed.
*
* @param source the source to get URI for
* @return the absolute URI representing the given source
*/
public URI restoreAbsolute(Source source) {
return null;
}
}