Wed, 21 Sep 2011 21:56:53 -0700
7092965: javac should not close processorClassLoader before end of compilation
Reviewed-by: darcy
duke@1 | 1 | /* |
ohair@554 | 2 | * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ohair@554 | 7 | * published by the Free Software Foundation. Oracle designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
ohair@554 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
ohair@554 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 22 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 23 | * questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | package com.sun.tools.javac.comp; |
duke@1 | 27 | |
duke@1 | 28 | import com.sun.tools.javac.tree.*; |
duke@1 | 29 | import java.util.Iterator; |
duke@1 | 30 | import java.util.NoSuchElementException; |
duke@1 | 31 | |
duke@1 | 32 | /** A class for environments, instances of which are passed as |
duke@1 | 33 | * arguments to tree visitors. Environments refer to important ancestors |
duke@1 | 34 | * of the subtree that's currently visited, such as the enclosing method, |
duke@1 | 35 | * the enclosing class, or the enclosing toplevel node. They also contain |
duke@1 | 36 | * a generic component, represented as a type parameter, to carry further |
duke@1 | 37 | * information specific to individual passes. |
duke@1 | 38 | * |
jjg@581 | 39 | * <p><b>This is NOT part of any supported API. |
jjg@581 | 40 | * If you write code that depends on this, you do so at your own risk. |
duke@1 | 41 | * This code and its internal interfaces are subject to change or |
duke@1 | 42 | * deletion without notice.</b> |
duke@1 | 43 | */ |
duke@1 | 44 | public class Env<A> implements Iterable<Env<A>> { |
duke@1 | 45 | |
duke@1 | 46 | /** The next enclosing environment. |
duke@1 | 47 | */ |
duke@1 | 48 | public Env<A> next; |
duke@1 | 49 | |
duke@1 | 50 | /** The environment enclosing the current class. |
duke@1 | 51 | */ |
duke@1 | 52 | public Env<A> outer; |
duke@1 | 53 | |
duke@1 | 54 | /** The tree with which this environment is associated. |
duke@1 | 55 | */ |
duke@1 | 56 | public JCTree tree; |
duke@1 | 57 | |
duke@1 | 58 | /** The enclosing toplevel tree. |
duke@1 | 59 | */ |
duke@1 | 60 | public JCTree.JCCompilationUnit toplevel; |
duke@1 | 61 | |
duke@1 | 62 | /** The next enclosing class definition. |
duke@1 | 63 | */ |
duke@1 | 64 | public JCTree.JCClassDecl enclClass; |
duke@1 | 65 | |
duke@1 | 66 | /** The next enclosing method definition. |
duke@1 | 67 | */ |
duke@1 | 68 | public JCTree.JCMethodDecl enclMethod; |
duke@1 | 69 | |
duke@1 | 70 | /** A generic field for further information. |
duke@1 | 71 | */ |
duke@1 | 72 | public A info; |
duke@1 | 73 | |
duke@1 | 74 | /** Is this an environment for evaluating a base clause? |
duke@1 | 75 | */ |
duke@1 | 76 | public boolean baseClause = false; |
duke@1 | 77 | |
duke@1 | 78 | /** Create an outermost environment for a given (toplevel)tree, |
duke@1 | 79 | * with a given info field. |
duke@1 | 80 | */ |
duke@1 | 81 | public Env(JCTree tree, A info) { |
duke@1 | 82 | this.next = null; |
duke@1 | 83 | this.outer = null; |
duke@1 | 84 | this.tree = tree; |
duke@1 | 85 | this.toplevel = null; |
duke@1 | 86 | this.enclClass = null; |
duke@1 | 87 | this.enclMethod = null; |
duke@1 | 88 | this.info = info; |
duke@1 | 89 | } |
duke@1 | 90 | |
duke@1 | 91 | /** Duplicate this environment, updating with given tree and info, |
duke@1 | 92 | * and copying all other fields. |
duke@1 | 93 | */ |
duke@1 | 94 | public Env<A> dup(JCTree tree, A info) { |
duke@1 | 95 | return dupto(new Env<A>(tree, info)); |
duke@1 | 96 | } |
duke@1 | 97 | |
duke@1 | 98 | /** Duplicate this environment into a given Environment, |
duke@1 | 99 | * using its tree and info, and copying all other fields. |
duke@1 | 100 | */ |
duke@1 | 101 | public Env<A> dupto(Env<A> that) { |
duke@1 | 102 | that.next = this; |
duke@1 | 103 | that.outer = this.outer; |
duke@1 | 104 | that.toplevel = this.toplevel; |
duke@1 | 105 | that.enclClass = this.enclClass; |
duke@1 | 106 | that.enclMethod = this.enclMethod; |
duke@1 | 107 | return that; |
duke@1 | 108 | } |
duke@1 | 109 | |
duke@1 | 110 | /** Duplicate this environment, updating with given tree, |
duke@1 | 111 | * and copying all other fields. |
duke@1 | 112 | */ |
duke@1 | 113 | public Env<A> dup(JCTree tree) { |
duke@1 | 114 | return dup(tree, this.info); |
duke@1 | 115 | } |
duke@1 | 116 | |
duke@1 | 117 | /** Return closest enclosing environment which points to a tree with given tag. |
duke@1 | 118 | */ |
duke@1 | 119 | public Env<A> enclosing(int tag) { |
duke@1 | 120 | Env<A> env1 = this; |
duke@1 | 121 | while (env1 != null && env1.tree.getTag() != tag) env1 = env1.next; |
duke@1 | 122 | return env1; |
duke@1 | 123 | } |
duke@1 | 124 | |
duke@1 | 125 | public String toString() { |
duke@1 | 126 | return "Env[" + info + (outer == null ? "" : ",outer=" + outer) + "]"; |
duke@1 | 127 | } |
duke@1 | 128 | |
duke@1 | 129 | public Iterator<Env<A>> iterator() { |
duke@1 | 130 | return new Iterator<Env<A>>() { |
duke@1 | 131 | Env<A> next = Env.this; |
duke@1 | 132 | public boolean hasNext() { |
duke@1 | 133 | return next.outer != null; |
duke@1 | 134 | } |
duke@1 | 135 | public Env<A> next() { |
duke@1 | 136 | if (hasNext()) { |
duke@1 | 137 | Env<A> current = next; |
duke@1 | 138 | next = current.outer; |
duke@1 | 139 | return current; |
duke@1 | 140 | } |
duke@1 | 141 | throw new NoSuchElementException(); |
duke@1 | 142 | |
duke@1 | 143 | } |
duke@1 | 144 | public void remove() { |
duke@1 | 145 | throw new UnsupportedOperationException(); |
duke@1 | 146 | } |
duke@1 | 147 | }; |
duke@1 | 148 | } |
duke@1 | 149 | } |