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ModelCC is a model-based parser generator (a.k.a. compiler compiler) that decouples language specification from language processing, avoiding some of the problems caused by grammar-driven parser generators. ModelCC receives a conceptual model as input, along with constraints that annotate it. It is then able to create a parser for the desired textual language and the generated parser fully automates the instantiation of the language conceptual model. ModelCC also includes a built-in reference resolution mechanism that results in abstract syntax graphs, rather than mere abstract syntax trees.

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/*
 * ModelCC, distributed under ModelCC Shared Software License, www.modelcc.org
 */

package org.modelcc.language.factory;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.modelcc.language.metamodel.LanguageMember;

/**
 * Member specification
 * 
 * @author Luis Quesada ([email protected]), refactored by Fernando Berzal ([email protected])
 */
public class MemberSpecification implements Serializable 
{
    private List members;
    private Map contents;

    public MemberSpecification()
    {
    	members = new ArrayList();
    	contents = new HashMap();
    }
    
    public MemberSpecification(LanguageMember em) 
    {
    	this();
    	members.add(em);
    }

    public MemberSpecification(MemberSpecification mn) 
    {
    	this();
    	add(mn);
    }
    
	public List getMembers() 
	{
		return members;
	}

	public void clear()
	{
    	members = new ArrayList();
	}
	
	public void add(LanguageMember member)
	{
		members.add(member);
	}
	
	public void addAll(List newMembers)
	{
		members.addAll(newMembers);
	}

	public void add(MemberSpecification member)
	{
		members.addAll(member.members);
		contents.putAll(member.contents);
	}
	
	public MemberContent getContent (LanguageMember member)
	{
		return contents.get(member);
	}
	
	public void setContent (LanguageMember member, MemberContent content)
	{
		contents.put(member, content);
	}

	public LanguageMember getFront() {
		if (members.size()==0)
			return null;
		return members.get(0);
	}

	public LanguageMember getBack() {
		if (members.size()==0)
			return null;
		return members.get(members.size()-1);
	}

}