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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2018-2022 Saxonica Limited
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

package net.sf.saxon.expr;

/**
 * Binding for local variables and parameters: anything that is allocated a slot on the XPathContext
 * stack frame.
 */
public interface LocalBinding extends Binding {

    /**
     * Return the slot number of the variable held on the local stack frame
     *
     * @return the slot number on the local stack frame
     */

    int getLocalSlotNumber();

    /**
     * Say that the bound value has the potential to be indexed
     */

    void setIndexedVariable();

    /**
     * Ask whether the binding is to be indexed
     *
     * @return true if the variable value can be indexed
     */

    boolean isIndexedVariable();
}