com.synflow.models.ir.transform.UniqueNameComputer.java Source code

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Here is the source code for com.synflow.models.ir.transform.UniqueNameComputer.java

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/*******************************************************************************
 * Copyright (c) 2014 Synflow SAS.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Matthieu Wipliez - initial API and implementation and/or initial documentation
 *******************************************************************************/
package com.synflow.models.ir.transform;

import java.util.List;
import java.util.Set;

import com.google.common.base.Function;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import com.synflow.models.ir.Var;

/**
 * This class defines a name computer that generates unique names.
 * 
 * @author Matthieu Wipliez
 *
 */
public class UniqueNameComputer {

    private Set<String> names;

    public UniqueNameComputer(Iterable<String> names) {
        this.names = Sets.newHashSet(names);
    }

    public UniqueNameComputer(List<Var> variables) {
        this(Iterables.transform(variables, new Function<Var, String>() {
            public String apply(Var variable) {
                return variable.getName();
            }
        }));
    }

    /**
     * Returns a unique name based on the given name.
     * 
     * @param name
     *            name
     * @return a unique name based on the given name
     */
    public String getUniqueName(String name) {
        String uniqueName = name;
        int i = 1;
        while (names.contains(uniqueName)) {
            uniqueName = name + "_" + i;
            i++;
        }
        names.add(uniqueName);
        return uniqueName;
    }

}