NamedFunction.java

/*
Copyright (c) 2008 Arno Haase, Andr� Arnold.
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:
    Arno Haase - initial API and implementation
    Andr� Arnold
 */
package org.eclipse.xtend.backend.common;


/**
 * This class represents the binding of a function to a name. It is a separate
 *  concept from Function itself so that the same function can have several names.
 *  
 * @author Arno Haase (http://www.haase-consulting.com)
 * @author Andr� Arnold
 */
public class NamedFunction {
    private final Function _function;
    private final QualifiedName _name;

    public NamedFunction (QualifiedName name, Function f) {
        _function = f;
        _name = name;
    }
    
    public Function getFunction () {
        return _function;
    }
    
    public QualifiedName getName () {
        return _name;
    }

    @Override
    public int hashCode () {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((_function == null) ? 0 : _function.hashCode());
        result = prime * result + ((_name == null) ? 0 : _name.hashCode());
        return result;
    }

    @Override
    public boolean equals (Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        final NamedFunction other = (NamedFunction) obj;
        if (_function == null) {
            if (other._function != null)
                return false;
        } else if (!_function.equals(other._function))
            return false;
        if (_name == null) {
            if (other._name != null)
                return false;
        } else if (!_name.equals(other._name))
            return false;
        return true;
    }
    
    @Override
    public String toString () {
        return "NamedFunction [" + _name + ": " + _function + "]";
    }
}