Source Code Cross Referenced for JavacScope.java in  » 6.0-JDK-Modules-sun » javac-compiler » com » sun » tools » javac » api » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules sun » javac compiler » com.sun.tools.javac.api 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
003:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004:         *
005:         * This code is free software; you can redistribute it and/or modify it
006:         * under the terms of the GNU General Public License version 2 only, as
007:         * published by the Free Software Foundation.  Sun designates this
008:         * particular file as subject to the "Classpath" exception as provided
009:         * by Sun in the LICENSE file that accompanied this code.
010:         *
011:         * This code is distributed in the hope that it will be useful, but WITHOUT
012:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013:         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014:         * version 2 for more details (a copy is included in the LICENSE file that
015:         * accompanied this code).
016:         *
017:         * You should have received a copy of the GNU General Public License version
018:         * 2 along with this work; if not, write to the Free Software Foundation,
019:         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020:         *
021:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022:         * CA 95054 USA or visit www.sun.com if you need additional information or
023:         * have any questions.
024:         */
025:
026:        package com.sun.tools.javac.api;
027:
028:        import java.io.IOException;
029:        import java.lang.ref.SoftReference;
030:        import java.util.Iterator;
031:
032:        import javax.lang.model.element.Element;
033:        import javax.lang.model.element.ExecutableElement;
034:        import javax.lang.model.element.TypeElement;
035:        import javax.tools.JavaFileObject;
036:
037:        import com.sun.source.tree.Tree;
038:        import com.sun.source.util.SourcePositions;
039:        import com.sun.source.util.TreePath;
040:        import com.sun.source.util.Trees;
041:        import com.sun.tools.javac.code.Scope;
042:        import com.sun.tools.javac.code.Symbol.ClassSymbol;
043:        import com.sun.tools.javac.comp.Attr;
044:        import com.sun.tools.javac.comp.AttrContext;
045:        import com.sun.tools.javac.comp.Enter;
046:        import com.sun.tools.javac.comp.Env;
047:        import com.sun.tools.javac.comp.MemberEnter;
048:        import com.sun.tools.javac.comp.Resolve;
049:        import com.sun.tools.javac.tree.JCTree.JCClassDecl;
050:        import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
051:        import com.sun.tools.javac.tree.JCTree.JCExpression;
052:        import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
053:        import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
054:        import com.sun.tools.javac.tree.JCTree;
055:        import com.sun.tools.javac.tree.TreeCopier;
056:        import com.sun.tools.javac.tree.TreeInfo;
057:        import com.sun.tools.javac.tree.TreeMaker;
058:        import com.sun.tools.javac.util.Context;
059:        import com.sun.tools.javac.util.List;
060:        import com.sun.tools.javac.util.Log;
061:
062:        import static com.sun.source.tree.Tree.Kind.*;
063:
064:        /**
065:         * Provides an implementation of Scope.
066:         *
067:         * <p><b>This is NOT part of any API supported by Sun Microsystems.
068:         * If you write code that depends on this, you do so at your own
069:         * risk.  This code and its internal interfaces are subject to change
070:         * or deletion without notice.</b></p>
071:         *
072:         * @author Jonathan Gibbons;
073:         */
074:        public class JavacScope implements  com.sun.source.tree.Scope {
075:            protected final Env<AttrContext> env;
076:
077:            /** Creates a new instance of JavacScope */
078:            JavacScope(Env<AttrContext> env) {
079:                env.getClass(); // null-check
080:                this .env = env;
081:            }
082:
083:            public JavacScope getEnclosingScope() {
084:                if (env.outer != null && env.outer != env)
085:                    return new JavacScope(env.outer);
086:                else {
087:                    // synthesize an outermost "star-import" scope
088:                    return new JavacScope(env) {
089:                        public boolean isStarImportScope() {
090:                            return true;
091:                        }
092:
093:                        public JavacScope getEnclosingScope() {
094:                            return null;
095:                        }
096:
097:                        public Iterable<? extends Element> getLocalElements() {
098:                            return env.toplevel.starImportScope.getElements();
099:                        }
100:                    };
101:                }
102:            }
103:
104:            public TypeElement getEnclosingClass() {
105:                // hide the dummy class that javac uses to enclose the top level declarations
106:                return (env.outer == null || env.outer == env ? null
107:                        : env.enclClass.sym);
108:            }
109:
110:            public ExecutableElement getEnclosingMethod() {
111:                return (env.enclMethod == null ? null : env.enclMethod.sym);
112:            }
113:
114:            public Iterable<? extends Element> getLocalElements() {
115:                return env.info.getLocalElements();
116:            }
117:
118:            public Env<AttrContext> getEnv() {
119:                return env;
120:            }
121:
122:            public boolean isStarImportScope() {
123:                return false;
124:            }
125:
126:            public boolean equals(Object other) {
127:                if (other instanceof  JavacScope) {
128:                    JavacScope s = (JavacScope) other;
129:                    return (env.equals(s.env) && isStarImportScope() == s
130:                            .isStarImportScope());
131:                } else
132:                    return false;
133:            }
134:
135:            public int hashCode() {
136:                return env.hashCode() + (isStarImportScope() ? 1 : 0);
137:            }
138:
139:            public String toString() {
140:                return "JavacScope[env=" + env + ",starImport="
141:                        + isStarImportScope() + "]";
142:            }
143:        }
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