| 1 | /* |
| 2 | * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.tools.javac.comp; |
| 27 | |
| 28 | import com.sun.tools.javac.util.*; |
| 29 | import com.sun.tools.javac.code.*; |
| 30 | |
| 31 | /** Contains information specific to the attribute and enter |
| 32 | * passes, to be used in place of the generic field in environments. |
| 33 | * |
| 34 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
| 35 | * you write code that depends on this, you do so at your own risk. |
| 36 | * This code and its internal interfaces are subject to change or |
| 37 | * deletion without notice.</b> |
| 38 | */ |
| 39 | public class AttrContext { |
| 40 | |
| 41 | /** The scope of local symbols. |
| 42 | */ |
| 43 | Scope scope = null; |
| 44 | |
| 45 | /** The number of enclosing `static' modifiers. |
| 46 | */ |
| 47 | int staticLevel = 0; |
| 48 | |
| 49 | /** Is this an environment for a this(...) or super(...) call? |
| 50 | */ |
| 51 | boolean isSelfCall = false; |
| 52 | |
| 53 | /** Are we evaluating the selector of a `super' or type name? |
| 54 | */ |
| 55 | boolean selectSuper = false; |
| 56 | |
| 57 | /** Are arguments to current function applications boxed into an array for varargs? |
| 58 | */ |
| 59 | boolean varArgs = false; |
| 60 | |
| 61 | /** A list of type variables that are all-quantifed in current context. |
| 62 | */ |
| 63 | List<Type> tvars = List.nil(); |
| 64 | |
| 65 | /** A record of the lint/SuppressWarnings currently in effect |
| 66 | */ |
| 67 | Lint lint; |
| 68 | |
| 69 | /** Duplicate this context, replacing scope field and copying all others. |
| 70 | */ |
| 71 | AttrContext dup(Scope scope) { |
| 72 | AttrContext info = new AttrContext(); |
| 73 | info.scope = scope; |
| 74 | info.staticLevel = staticLevel; |
| 75 | info.isSelfCall = isSelfCall; |
| 76 | info.selectSuper = selectSuper; |
| 77 | info.varArgs = varArgs; |
| 78 | info.tvars = tvars; |
| 79 | info.lint = lint; |
| 80 | return info; |
| 81 | } |
| 82 | |
| 83 | /** Duplicate this context, copying all fields. |
| 84 | */ |
| 85 | AttrContext dup() { |
| 86 | return dup(scope); |
| 87 | } |
| 88 | |
| 89 | public Iterable<Symbol> getLocalElements() { |
| 90 | if (scope == null) |
| 91 | return List.nil(); |
| 92 | return scope.getElements(); |
| 93 | } |
| 94 | |
| 95 | public String toString() { |
| 96 | return "AttrContext[" + scope.toString() + "]"; |
| 97 | } |
| 98 | } |