--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/com/sun/tools/javac/api/JavacScope.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,140 @@
+/*
+ * 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() + "]";
+    }
+}