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/*=============================================================================#
# Copyright (c) 2010, 2022 Stephan Wahlbrink and others.
#
# This program and the accompanying materials are made available under the
# terms of the Eclipse Public License 2.0 which is available at
# https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
# which is available at https://www.apache.org/licenses/LICENSE-2.0.
#
# SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
#
# Contributors:
# Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
#=============================================================================*/
package org.eclipse.statet.rj.renv.core;
import java.nio.file.Path;
import org.eclipse.statet.jcommons.lang.NonNullByDefault;
import org.eclipse.statet.jcommons.lang.Nullable;
/**
* A single R library.
*
* It usually points to a directory in a file system with
* subdirectories containing the R packages.
*/
@NonNullByDefault
public interface RLibLocation {
/** Source type constant */
String R= "r"; //$NON-NLS-1$
/** Source type constant */
String EPLUGIN= "eplugin"; //$NON-NLS-1$
/** Source type constant */
String USER= "user"; //$NON-NLS-1$
String MISSING= "missing"; //$NON-NLS-1$
String getSource();
@Nullable String getLabel();
/**
* Returns the directory as specified (may contain variables).
*
* @return the directory path string
*/
String getDirectory();
/**
* Returns the directory as local NIO path.
*
* @return the directory path; or <code>null</code> if the specified path is not local or
* cannot be resolved
*/
@Nullable Path getDirectoryPath();
}
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