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package cdc.mf.model;

/**
 * Description of the usage of an element.
 *
 * @author Damien Carbonne
 */
public class MfUsage {
    private final MfElement element;
    private final Kind kind;
    private final boolean direct;

    /**
     * Enumeration of possible kinds of usage.
     *
     * @author Damien Carbonne
     */
    enum Kind {
        /**
         * A type is used by a property.
         */
        PROPERTY_TYPE,

        /**
         * A type is used by a parameter.
         */
        PARAMETER_TYPE,

        /**
         * A type is used by a navigable source tip.
         */
        NAVIGABLE_SOURCE_TYPE,

        /**
         * A type is used by a non-navigable source tip.
         */
        NON_NAVIGABLE_SOURCE_TYPE,

        /**
         * A type is used by a navigable target tip.
         */
        NAVIGABLE_TARGET_TYPE,

        /**
         * A type is used by a non-navigable target tip.
         */
        NON_NAVIGABLE_TARGET_TYPE,

        /**
         * A type is extended.
         */
        EXTENSION,

        /**
         * A type (interface) is implemented.
         */
        IMPLEMENTATION;
    }

    public MfUsage(MfElement element,
                   Kind kind,
                   boolean direct) {
        this.element = element;
        this.kind = kind;
        this.direct = direct;
    }

    public MfElement getElement() {
        return element;
    }

    public Kind getKind() {
        return kind;
    }

    public boolean isDirect() {
        return direct;
    }
}