Model.java

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package com.sun.tools.hat.internal.lang;

/**
 * Base interface that all language-specific models implement.
 *
 * <p>In the current design of language-specific models, there are three
 * generic types: scalars, lists, and maps, represented by the interfaces
 * {@link ScalarModel}, {@link CollectionModel}, and {@link MapModel}. In order to
 * allow users of the class not to have to do a bunch of {@code instanceof}
 * tests, a visitor pattern is used instead.
 *
 * @author Chris K. Jester-Young
 */
public interface Model {
    /**
     * Returns the factory that created this model.
     *
     * @return the factory that created this model
     */
    ModelFactory getFactory();

    /**
     * Sends this model to the given visitor.
     *
     * @param visitor the visitor to send this model to
     */
    void visit(ModelVisitor visitor);
}