| /******************************************************************************* |
| * Copyright (c) 2010 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.jsdt.debug.core.jsdi; |
| |
| import java.util.List; |
| |
| /** |
| * Abstract description of a stack frame |
| * |
| * @see Location |
| * @see Mirror |
| * @see Value |
| * @see Variable |
| * @since 1.0 |
| * @noextend This interface is not intended to be extended by clients. |
| */ |
| public interface StackFrame extends Mirror { |
| |
| /** |
| * Returns the value of <code>this</code> for the current frame.<br> |
| * <br> |
| * This method cannot return <code>null</code> |
| * |
| * @return the 'this' ObjectReference never <code>null</code> |
| */ |
| public Variable thisObject(); |
| |
| /** |
| * The visible variables for this {@link StackFrame}.<br> |
| * <br> |
| * This method cannot return <code>null</code>. |
| * |
| * @return the list of {@link Variable} objects for this {@link StackFrame} or an empty list, never <code>null</code> |
| */ |
| public List/* <Variable> */variables(); |
| |
| /** |
| * The current {@link Location} associated with this {@link StackFrame}.<br> |
| * <br> |
| * This method can return <code>null</code> |
| * |
| * @return the {@link Location} associated with this {@link StackFrame} or <code>null</code> |
| */ |
| public Location location(); |
| |
| /** |
| * Evaluates the given expression in the context of this {@link StackFrame} |
| * and returns the resulting {@link Value}.<br> |
| * <br> |
| * This method cannot return <code>null</code> but can return the {@link NullValue} |
| * |
| * @return the {@link Value} result of evaluating the expression never <code>null</code> |
| */ |
| public Value evaluate(String expression); |
| } |