| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.variables; |
| |
| |
| /** |
| * A variable that can be referenced in an expression, which resolves to a |
| * string value. Variables are referenced in expressions via their name, in the |
| * following format. |
| * |
| * <pre> |
| * ${varname} or ${varname:argument} |
| * </pre> |
| * <p> |
| * A variable is identified by its name, and optionally accepts an argument. |
| * When an argument is present, a colon separates the variable name from its |
| * argument. |
| * </p> |
| * <p> |
| * Variables can be contributed by extensions or programmatically. There are two |
| * kinds of variables. |
| * </p> |
| * <ul> |
| * <li><code>IValueVariable</code> - variables that have a value (with getter |
| * and setter), and accept no arguments. The value of this type of variable is |
| * resolved at the time its value is set via its setter API.</li> |
| * <li><code>IDynamicVariable</code> - variables whose value is resolved at the |
| * time a string substitution is performed by a contributed resolver. Dynamic |
| * variables may accept an argument.</li> |
| * </ul> |
| * |
| * @since 3.0 |
| * @noimplement This interface is not intended to be implemented by clients. |
| */ |
| public interface IStringVariable { |
| |
| /** |
| * Returns the name of this variable. A variable is uniquely identified by |
| * its name. |
| * |
| * @return variable name |
| */ |
| String getName(); |
| |
| /** |
| * Returns a human readable description of this variable, possibly <code>null</code> |
| * |
| * @return a description of this variable, or <code>null</code> if none |
| */ |
| String getDescription(); |
| |
| } |