/*******************************************************************************
* Copyright (c) 2009 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.el.core.resolver;
import java.util.List;
import org.eclipse.core.resources.IResource;
import org.jboss.tools.common.el.core.parser.LexicalToken;
import org.jboss.tools.common.text.ITextSourceReference;
/**
* Describes a segment of EL operand.
* @author Alexey Kazakov
*/
public interface ELSegment {
/**
* @return source EL token.
*/
LexicalToken getToken();
/**
* @return true if the segment has been resolved.
*/
boolean isResolved();
/**
* @return resource of underlying object.
*/
IResource getResource();
/**
* @return source reference of underlying object.
*/
ITextSourceReference getSourceReference();
/**
* Returns references to objects that can be opened from this segment.
* If there are no references, empty array is returned. The returned object is never null.
*
* @return references to objects that can be opened from this segment.
*/
IOpenableReference[] getOpenable();
/**
* @return underlying variables.
*/
List<IVariable> getVariables();
/**
* Returns false if EL validator should ignore this segment and don't mark it as a problem even if the segment is not resolved.
* @return
*/
boolean isValidatable();
}