/*******************************************************************************
 * Copyright (c) 2011-2016 Igor Fedorenko
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *      Igor Fedorenko - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.launching.sourcelookup.advanced;

import java.io.File;

import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.model.IStackFrame;

/**
 * Helpers to extract source lookup location information from advanced source lookup JSR-45 strata.
 */
public interface IJDIHelpers {

	public static final IJDIHelpers INSTANCE = new JDIHelpers();

	/**
	 * Return classes location the given element was loaded from or {@code null} if the location cannot be determined.
	 */
	public File getClassesLocation(Object element) throws DebugException;

	/**
	 * Returns source path of the given element or {@code null} if the source path cannot be determined. The returned path is relative to a sources
	 * container.
	 */
	public String getSourcePath(Object element) throws DebugException;

	/**
	 * If the given element is a {@link IStackFrame}, returns classes locations of the stack frames "beneath" the given element. The returned iterable
	 * does not include {@code null} elements.
	 *
	 * Returns empty iterable if the given element is not a {@link IStackFrame}.
	 */
	public Iterable<File> getStackFramesClassesLocations(Object element) throws DebugException;

}