| /* |
| * Copyright (c) 2006, 2014, 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.javac.api; |
| |
| |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.ExecutableElement; |
| import javax.lang.model.element.TypeElement; |
| |
| import com.sun.tools.javac.comp.AttrContext; |
| import com.sun.tools.javac.comp.Env; |
| import com.sun.tools.javac.util.DefinedBy; |
| import com.sun.tools.javac.util.DefinedBy.Api; |
| import com.sun.tools.javac.util.Assert; |
| |
| /** |
| * Provides an implementation of Scope. |
| * |
| * <p><b>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.</b></p> |
| * |
| * @author Jonathan Gibbons; |
| */ |
| public class JavacScope implements com.sun.source.tree.Scope { |
| |
| static JavacScope create(Env<AttrContext> env) { |
| if (env.outer == null || env.outer == env) { |
| //the "top-level" scope needs to return both imported and defined elements |
| //see test CheckLocalElements |
| return new JavacScope(env) { |
| @Override @DefinedBy(Api.COMPILER_TREE) |
| public Iterable<? extends Element> getLocalElements() { |
| return env.toplevel.namedImportScope.getSymbols(); |
| } |
| }; |
| } else { |
| return new JavacScope(env); |
| } |
| } |
| |
| protected final Env<AttrContext> env; |
| |
| private JavacScope(Env<AttrContext> env) { |
| this.env = Assert.checkNonNull(env); |
| } |
| |
| @DefinedBy(Api.COMPILER_TREE) |
| public JavacScope getEnclosingScope() { |
| if (env.outer != null && env.outer != env) { |
| return create(env.outer); |
| } else { |
| // synthesize an outermost "star-import" scope |
| return new JavacScope(env) { |
| public boolean isStarImportScope() { |
| return true; |
| } |
| @DefinedBy(Api.COMPILER_TREE) |
| public JavacScope getEnclosingScope() { |
| return null; |
| } |
| @DefinedBy(Api.COMPILER_TREE) |
| public Iterable<? extends Element> getLocalElements() { |
| return env.toplevel.starImportScope.getSymbols(); |
| } |
| }; |
| } |
| } |
| |
| @DefinedBy(Api.COMPILER_TREE) |
| 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); |
| } |
| |
| @DefinedBy(Api.COMPILER_TREE) |
| public ExecutableElement getEnclosingMethod() { |
| return (env.enclMethod == null ? null : env.enclMethod.sym); |
| } |
| |
| @DefinedBy(Api.COMPILER_TREE) |
| 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() + "]"; |
| } |
| } |