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

 /*

  * Copyright 2006 Sun Microsystems, Inc.  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.  Sun designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

  * CA 95054 USA or visit www.sun.com if you need additional information or

  * have any questions.

  */

 package com.sun.tools.javac.api;

 import java.io.IOException;

 import java.lang.ref.SoftReference;

 import java.util.Iterator;

 import javax.lang.model.element.Element;

 import javax.lang.model.element.ExecutableElement;

 import javax.lang.model.element.TypeElement;

 import javax.tools.JavaFileObject;

 import com.sun.source.tree.Tree;

 import com.sun.source.util.SourcePositions;

 import com.sun.source.util.TreePath;

 import com.sun.source.util.Trees;

 import com.sun.tools.javac.code.Scope;

 import com.sun.tools.javac.code.Symbol.ClassSymbol;

 import com.sun.tools.javac.comp.Attr;

 import com.sun.tools.javac.comp.AttrContext;

 import com.sun.tools.javac.comp.Enter;

 import com.sun.tools.javac.comp.Env;

 import com.sun.tools.javac.comp.MemberEnter;

 import com.sun.tools.javac.comp.Resolve;

 import com.sun.tools.javac.tree.JCTree.JCClassDecl;

 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;

 import com.sun.tools.javac.tree.JCTree.JCExpression;

 import com.sun.tools.javac.tree.JCTree.JCMethodDecl;

 import com.sun.tools.javac.tree.JCTree.JCVariableDecl;

 import com.sun.tools.javac.tree.JCTree;

 import com.sun.tools.javac.tree.TreeCopier;

 import com.sun.tools.javac.tree.TreeInfo;

 import com.sun.tools.javac.tree.TreeMaker;

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

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

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

 import static com.sun.source.tree.Tree.Kind.*;

 /**

  * Provides an implementation of Scope.

  *

  * <p><b>This is NOT part of any API supported by Sun Microsystems.

  * 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.</b></p>

  *

  * @author Jonathan Gibbons;

  */

 public class JavacScope implements com.sun.source.tree.Scope {

     protected final Env<AttrContext> env;

     /** Creates a new instance of JavacScope */

     JavacScope(Env<AttrContext> env) {

         env.getClass(); // null-check

         this.env = env;

     }

     public JavacScope getEnclosingScope() {

         if (env.outer != null && env.outer != env)

             return  new JavacScope(env.outer);

         else {

             // synthesize an outermost "star-import" scope

             return new JavacScope(env) {

                 public boolean isStarImportScope() {

                     return true;

                 }

                 public JavacScope getEnclosingScope() {

                     return null;

                 }

                 public Iterable<? extends Element> getLocalElements() {

                     return env.toplevel.starImportScope.getElements();

                 }

             };

         }

     }

     public TypeElement getEnclosingClass() {

         // hide the dummy class that javac uses to enclose the top level declarations

         return (env.outer == null || env.outer == env ? null : env.enclClass.sym);

     }

     public ExecutableElement getEnclosingMethod() {

         return (env.enclMethod == null ? null : env.enclMethod.sym);

     }

     public Iterable<? extends Element> getLocalElements() {

         return env.info.getLocalElements();

     }

     public Env<AttrContext> getEnv() {

         return env;

     }

     public boolean isStarImportScope() {

         return false;

     }

     public boolean equals(Object other) {

         if (other instanceof JavacScope) {

             JavacScope s = (JavacScope) other;

             return (env.equals(s.env)

                 && isStarImportScope() == s.isStarImportScope());

         } else

             return false;

     }

     public int hashCode() {

         return env.hashCode() + (isStarImportScope() ? 1 : 0);

     }

     public String toString() {

         return "JavacScope[env=" + env + ",starImport=" + isStarImportScope() + "]";

     }

 }