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/*
* Copyright (c) 2011, 2013, 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 javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.Element;
import javax.tools.JavaCompiler.CompilationTask;
import com.sun.source.doctree.DocCommentTree;
import javax.tools.Diagnostic;
/**
* Provides access to syntax trees for doc comments.
*
* @since 1.8
*/
@jdk.Exported
public abstract class DocTrees extends Trees {
/**
* Gets a DocTrees object for a given CompilationTask.
* @param task the compilation task for which to get the Trees object
* @throws IllegalArgumentException if the task does not support the Trees API.
*/
public static DocTrees instance(CompilationTask task) {
return (DocTrees) Trees.instance(task);
}
/**
* Gets a DocTrees object for a given ProcessingEnvironment.
* @param env the processing environment for which to get the Trees object
* @throws IllegalArgumentException if the env does not support the Trees API.
*/
public static DocTrees instance(ProcessingEnvironment env) {
if (!env.getClass().getName().equals("com.sun.tools.javac.processing.JavacProcessingEnvironment"))
throw new IllegalArgumentException();
return (DocTrees) getJavacTrees(ProcessingEnvironment.class, env);
}
/**
* Gets the doc comment tree, if any, for the Tree node identified by a given TreePath.
* Returns null if no doc comment was found.
*/
public abstract DocCommentTree getDocCommentTree(TreePath path);
/**
* Gets the language model element referred to by the leaf node of the given
* {@link DocTreePath}, or null if unknown.
*/
public abstract Element getElement(DocTreePath path);
public abstract DocSourcePositions getSourcePositions();
/**
* Prints a message of the specified kind at the location of the
* tree within the provided compilation unit
*
* @param kind the kind of message
* @param msg the message, or an empty string if none
* @param t the tree to use as a position hint
* @param root the compilation unit that contains tree
*/
public abstract void printMessage(Diagnostic.Kind kind, CharSequence msg,
com.sun.source.doctree.DocTree t,
com.sun.source.doctree.DocCommentTree c,
com.sun.source.tree.CompilationUnitTree root);
}