/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package javax.tools;
import java.util.Set;
import java.io.InputStream;
import java.io.OutputStream;
import javax.lang.model.SourceVersion;
/**
* Common interface for tools that can be invoked from a program.
* A tool is traditionally a command line program such as a compiler.
* The set of tools available with a platform is defined by the
* vendor.
*
* <p>Tools can be located using {@link
* java.util.ServiceLoader#load(Class)}.
*
* @author Neal M Gafter
* @author Peter von der Ah&eacute;
* @author Jonathan Gibbons
* @since 1.6
*/
public interface Tool {
/**
* Run the tool with the given I/O channels and arguments. By
* convention a tool returns 0 for success and nonzero for errors.
* Any diagnostics generated will be written to either {@code out}
* or {@code err} in some unspecified format.
*
* @param in "standard" input; use System.in if null
* @param out "standard" output; use System.out if null
* @param err "standard" error; use System.err if null
* @param arguments arguments to pass to the tool
* @return 0 for success; nonzero otherwise
* @throws NullPointerException if the array of arguments contains
* any {@code null} elements.
*/
int run(InputStream in, OutputStream out, OutputStream err, String... arguments);
/**
* Gets the source versions of the Java&trade; programming language
* supported by this tool.
* @return a set of supported source versions
*/
Set<SourceVersion> getSourceVersions();
}