Copyright (c) 2015 Google Inc and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    John Glassmyer  - import group sorting is broken - https://bugs.eclipse.org/430303
/*******************************************************************************
 * Copyright (c) 2015 Google Inc and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     John Glassmyer <jogl@google.com> - import group sorting is broken - https://bugs.eclipse.org/430303
 *******************************************************************************/
package org.eclipse.jdt.internal.core.dom.rewrite.imports;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

Indicates that one or more single imports (reducibleImports) are unnecessary or could be rendered unnecessary by the presence of an on-demand (.*) import (containerOnDemand) of their containing type or package. 
 This "reduction" can be applied by removing all declarations of reducibleImports from the compilation unit and adding a declaration of containerOnDemand to the compilation unit if one is not already present. /**
 * Indicates that one or more single imports ({@code reducibleImports}) are unnecessary or could be
 * rendered unnecessary by the presence of an on-demand (.*) import ({@code containerOnDemand}) of
 * their containing type or package.
 * <p>
 * This "reduction" can be applied by removing all declarations of {@code reducibleImports}
 * from the compilation unit and adding a declaration of {@code containerOnDemand} to the
 * compilation unit if one is not already present.
 */
class OnDemandReduction {
	final ImportName containerOnDemand;
	final Collection<ImportName> reducibleImports;

	OnDemandReduction(ImportName containerName, Collection<ImportName> reducibleImports) {
		this.containerOnDemand = containerName;
		this.reducibleImports = Collections.unmodifiableCollection(new ArrayList<ImportName>(reducibleImports));
	}

	@Override
	public String toString() {
		return String.format("{%s: %s}", this.containerOnDemand.containerName, this.reducibleImports); //$NON-NLS-1$
	}
}