Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2005, 2012, 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

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 package com.sun.source.util;

 import java.io.IOException;

 import javax.annotation.processing.ProcessingEnvironment;

 import javax.lang.model.element.Element;

 import javax.lang.model.type.TypeMirror;

 import javax.lang.model.util.Elements;

 import javax.lang.model.util.Types;

 import javax.tools.JavaCompiler.CompilationTask;

 import javax.tools.JavaFileObject;

 import com.sun.source.tree.CompilationUnitTree;

 import com.sun.source.tree.Tree;

 import com.sun.tools.javac.api.BasicJavacTask;

 import com.sun.tools.javac.processing.JavacProcessingEnvironment;

 import com.sun.tools.javac.util.Context;

 /**

  * Provides access to functionality specific to the JDK Java Compiler, javac.

  *

  * @author Peter von der Ahé

  * @author Jonathan Gibbons

  * @since 1.6

  */

 public abstract class JavacTask implements CompilationTask {

     /**

      * Get the {@code JavacTask} for a {@code ProcessingEnvironment}.

      * If the compiler is being invoked using a

      * {@link javax.tools.JavaCompiler.CompilationTask CompilationTask},

      * then that task will be returned.

      * @param processingEnvironment

      * @return the {@code JavacTask} for a {@code ProcessingEnvironment}

      * @since 1.8

      */

     public static JavacTask instance(ProcessingEnvironment processingEnvironment) {

         if (!processingEnvironment.getClass().getName().equals(

                 "com.sun.tools.javac.processing.JavacProcessingEnvironment"))

             throw new IllegalArgumentException();

         Context c = ((JavacProcessingEnvironment) processingEnvironment).getContext();

         JavacTask t = c.get(JavacTask.class);

         return (t != null) ? t : new BasicJavacTask(c, true);

     }

     /**

      * Parse the specified files returning a list of abstract syntax trees.

      *

      * @return a list of abstract syntax trees

      * @throws IOException if an unhandled I/O error occurred in the compiler.

      * @throws IllegalStateException if the operation cannot be performed at this time.

      */

     public abstract Iterable<? extends CompilationUnitTree> parse()

         throws IOException;

     /**

      * Complete all analysis.

      *

      * @return a list of elements that were analyzed

      * @throws IOException if an unhandled I/O error occurred in the compiler.

      * @throws IllegalStateException if the operation cannot be performed at this time.

      */

     public abstract Iterable<? extends Element> analyze() throws IOException;

     /**

      * Generate code.

      *

      * @return a list of files that were generated

      * @throws IOException if an unhandled I/O error occurred in the compiler.

      * @throws IllegalStateException if the operation cannot be performed at this time.

      */

     public abstract Iterable<? extends JavaFileObject> generate() throws IOException;

     /**

      * The specified listener will receive notification of events

      * describing the progress of this compilation task.

      *

      * If another listener is receiving notifications as a result of a prior

      * call of this method, then that listener will no longer receive notifications.

      *

      * Informally, this method is equivalent to calling {@code removeTaskListener} for

      * any listener that has been previously set, followed by {@code addTaskListener}

      * for the new listener.

      *

      * @throws IllegalStateException if the specified listener has already been added.

      */

     public abstract void setTaskListener(TaskListener taskListener);

     /**

      * The specified listener will receive notification of events

      * describing the progress of this compilation task.

      *

      * This method may be called at any time before or during the compilation.

      *

      * @throws IllegalStateException if the specified listener has already been added.

      * @since 1.8

      */

     public abstract void addTaskListener(TaskListener taskListener);

     /**

      * The specified listener will no longer receive notification of events

      * describing the progress of this compilation task.

      *

      * This method may be called at any time before or during the compilation.

      *

      * @since 1.8

      */

     public abstract void removeTaskListener(TaskListener taskListener);

     /**

      * Get a type mirror of the tree node determined by the specified path.

      * This method has been superceded by methods on

      * {@link com.sun.source.util.Trees Trees}.

      * @see com.sun.source.util.Trees#getTypeMirror

      */

     public abstract TypeMirror getTypeMirror(Iterable<? extends Tree> path);

     /**

      * Get a utility object for dealing with program elements.

      */

     public abstract Elements getElements();

     /**

      * Get a utility object for dealing with type mirrors.

      */

     public abstract Types getTypes();

 }