com.sun.tools.doclint.Env Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jdk.compiler Show documentation
Show all versions of jdk.compiler Show documentation
Maven repackaging of OpenJDK's jdk.compiler module
The newest version!
/*
* Copyright (c) 2012, 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.tools.doclint;
import java.util.Set;
import java.util.LinkedHashSet;
import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.Modifier;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.Elements;
import javax.lang.model.util.Types;
import com.sun.source.doctree.DocCommentTree;
import com.sun.source.util.DocTrees;
import com.sun.source.util.JavacTask;
import com.sun.source.util.SourcePositions;
import com.sun.source.util.TreePath;
import com.sun.tools.javac.model.JavacTypes;
import com.sun.tools.javac.tree.JCTree;
/**
* Utility container for current execution environment,
* providing the current declaration and its doc comment.
*
* This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own
* risk. This code and its internal interfaces are subject to change
* or deletion without notice.
*/
public class Env {
/**
* Access kinds for declarations.
*/
public enum AccessKind {
PRIVATE,
PACKAGE,
PROTECTED,
PUBLIC;
static boolean accepts(String opt) {
for (AccessKind g: values())
if (opt.equals(g.name().toLowerCase())) return true;
return false;
}
static AccessKind of(Set mods) {
if (mods.contains(Modifier.PUBLIC))
return AccessKind.PUBLIC;
else if (mods.contains(Modifier.PROTECTED))
return AccessKind.PROTECTED;
else if (mods.contains(Modifier.PRIVATE))
return AccessKind.PRIVATE;
else
return AccessKind.PACKAGE;
}
};
/** Message handler. */
final Messages messages;
int implicitHeaderLevel = 0;
Set customTags;
// Utility classes
DocTrees trees;
Elements elements;
Types types;
// Types used when analysing doc comments.
TypeMirror java_lang_Error;
TypeMirror java_lang_RuntimeException;
TypeMirror java_lang_Throwable;
TypeMirror java_lang_Void;
/** The path for the declaration containing the comment currently being analyzed. */
TreePath currPath;
/** The element for the declaration containing the comment currently being analyzed. */
Element currElement;
/** The comment current being analyzed. */
DocCommentTree currDocComment;
/**
* The access kind of the declaration containing the comment currently being analyzed.
* This is the minimum (most restrictive) access kind of the declaration itself
* and that of its containers. For example, a public method in a private class is
* noted as private.
*/
AccessKind currAccess;
/** The set of methods, if any, that the current declaration overrides. */
Set currOverriddenMethods;
Env() {
messages = new Messages(this);
}
void init(JavacTask task) {
init(DocTrees.instance(task), task.getElements(), task.getTypes());
}
void init(DocTrees trees, Elements elements, Types types) {
this.trees = trees;
this.elements = elements;
this.types = types;
java_lang_Error = elements.getTypeElement("java.lang.Error").asType();
java_lang_RuntimeException = elements.getTypeElement("java.lang.RuntimeException").asType();
java_lang_Throwable = elements.getTypeElement("java.lang.Throwable").asType();
java_lang_Void = elements.getTypeElement("java.lang.Void").asType();
}
void setImplicitHeaders(int n) {
implicitHeaderLevel = n;
}
void setCustomTags(String cTags) {
customTags = new LinkedHashSet();
for (String s : cTags.split(DocLint.TAGS_SEPARATOR)) {
if (!s.isEmpty())
customTags.add(s);
}
}
/** Set the current declaration and its doc comment. */
void setCurrent(TreePath path, DocCommentTree comment) {
currPath = path;
currDocComment = comment;
currElement = trees.getElement(currPath);
currOverriddenMethods = ((JavacTypes) types).getOverriddenMethods(currElement);
AccessKind ak = AccessKind.PUBLIC;
for (TreePath p = path; p != null; p = p.getParentPath()) {
Element e = trees.getElement(p);
if (e != null && e.getKind() != ElementKind.PACKAGE) {
ak = min(ak, AccessKind.of(e.getModifiers()));
}
}
currAccess = ak;
}
AccessKind getAccessKind() {
return currAccess;
}
long getPos(TreePath p) {
return ((JCTree) p.getLeaf()).pos;
}
long getStartPos(TreePath p) {
SourcePositions sp = trees.getSourcePositions();
return sp.getStartPosition(p.getCompilationUnit(), p.getLeaf());
}
private > T min(T item1, T item2) {
return (item1 == null) ? item2
: (item2 == null) ? item1
: item1.compareTo(item2) <= 0 ? item1 : item2;
}
}