Tue, 11 Aug 2009 01:13:14 +0100
6521805: Regression: JDK5/JDK6 javac allows write access to outer class reference
Summary: javac should warn/complain about identifiers with the same name as synthetic symbol
Reviewed-by: jjg
jjg@309 | 1 | /* |
jjg@309 | 2 | * Copyright 2008-2009 Sun Microsystems, Inc. All Rights Reserved. |
jjg@309 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
jjg@309 | 4 | * |
jjg@309 | 5 | * This code is free software; you can redistribute it and/or modify it |
jjg@309 | 6 | * under the terms of the GNU General Public License version 2 only, as |
jjg@309 | 7 | * published by the Free Software Foundation. Sun designates this |
jjg@309 | 8 | * particular file as subject to the "Classpath" exception as provided |
jjg@309 | 9 | * by Sun in the LICENSE file that accompanied this code. |
jjg@309 | 10 | * |
jjg@309 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
jjg@309 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
jjg@309 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
jjg@309 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
jjg@309 | 15 | * accompanied this code). |
jjg@309 | 16 | * |
jjg@309 | 17 | * You should have received a copy of the GNU General Public License version |
jjg@309 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
jjg@309 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
jjg@309 | 20 | * |
jjg@309 | 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
jjg@309 | 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
jjg@309 | 23 | * have any questions. |
jjg@309 | 24 | */ |
jjg@309 | 25 | |
jjg@309 | 26 | package com.sun.tools.javac.code; |
jjg@309 | 27 | |
jjg@309 | 28 | import static com.sun.tools.javac.code.TargetType.TargetAttribute.*; |
jjg@309 | 29 | |
jjg@309 | 30 | import java.util.EnumSet; |
jjg@309 | 31 | import java.util.Set; |
jjg@309 | 32 | |
jjg@309 | 33 | /** |
jjg@309 | 34 | * Describes the type of program element an extended annotation (or extended |
jjg@309 | 35 | * compound attribute) targets. |
jjg@309 | 36 | * |
jjg@309 | 37 | * By comparison, a Tree.Kind has enum values for all elements in the AST, and |
jjg@309 | 38 | * it does not provide enough resolution for type arguments (i.e., whether an |
jjg@309 | 39 | * annotation targets a type argument in a local variable, method return type, |
jjg@309 | 40 | * or a typecast). |
jjg@309 | 41 | * |
jjg@309 | 42 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
jjg@309 | 43 | * you write code that depends on this, you do so at your own risk. |
jjg@309 | 44 | * This code and its internal interfaces are subject to change or |
jjg@309 | 45 | * deletion without notice.</b> |
jjg@309 | 46 | */ |
jjg@309 | 47 | public enum TargetType { |
jjg@309 | 48 | |
jjg@309 | 49 | // |
jjg@309 | 50 | // Some target types are commented out, because Java doesn't permit such |
jjg@309 | 51 | // targets. They are included here to confirm that their omission is |
jjg@309 | 52 | // intentional omission not an accidental omission. |
jjg@309 | 53 | // |
jjg@309 | 54 | |
jjg@309 | 55 | /** For annotations on typecasts. */ |
jjg@310 | 56 | TYPECAST(0x00, IsLocal), |
jjg@309 | 57 | |
jjg@309 | 58 | /** For annotations on a type argument or nested array of a typecast. */ |
jjg@310 | 59 | TYPECAST_GENERIC_OR_ARRAY(0x01, HasLocation, IsLocal), |
jjg@309 | 60 | |
jjg@309 | 61 | /** For annotations on type tests. */ |
jjg@310 | 62 | INSTANCEOF(0x02, IsLocal), |
jjg@309 | 63 | |
jjg@309 | 64 | /** For annotations on a type argument or nested array of a type test. */ |
jjg@310 | 65 | INSTANCEOF_GENERIC_OR_ARRAY(0x03, HasLocation, IsLocal), |
jjg@309 | 66 | |
jjg@309 | 67 | /** For annotations on object creation expressions. */ |
jjg@310 | 68 | NEW(0x04, IsLocal), |
jjg@309 | 69 | |
jjg@309 | 70 | /** |
jjg@309 | 71 | * For annotations on a type argument or nested array of an object creation |
jjg@309 | 72 | * expression. |
jjg@309 | 73 | */ |
jjg@310 | 74 | NEW_GENERIC_OR_ARRAY(0x05, HasLocation, IsLocal), |
jjg@309 | 75 | |
jjg@309 | 76 | |
jjg@309 | 77 | /** For annotations on the method receiver. */ |
jjg@309 | 78 | METHOD_RECEIVER(0x06), |
jjg@309 | 79 | |
jjg@309 | 80 | // invalid location |
jjg@309 | 81 | //@Deprecated METHOD_RECEIVER_GENERIC_OR_ARRAY(0x07, HasLocation), |
jjg@309 | 82 | |
jjg@309 | 83 | /** For annotations on local variables. */ |
jjg@310 | 84 | LOCAL_VARIABLE(0x08, IsLocal), |
jjg@309 | 85 | |
jjg@309 | 86 | /** For annotations on a type argument or nested array of a local. */ |
jjg@310 | 87 | LOCAL_VARIABLE_GENERIC_OR_ARRAY(0x09, HasLocation, IsLocal), |
jjg@309 | 88 | |
jjg@309 | 89 | // handled by regular annotations |
jjg@309 | 90 | //@Deprecated METHOD_RETURN(0x0A), |
jjg@309 | 91 | |
jjg@309 | 92 | /** |
jjg@309 | 93 | * For annotations on a type argument or nested array of a method return |
jjg@309 | 94 | * type. |
jjg@309 | 95 | */ |
jjg@309 | 96 | METHOD_RETURN_GENERIC_OR_ARRAY(0x0B, HasLocation), |
jjg@309 | 97 | |
jjg@309 | 98 | // handled by regular annotations |
jjg@309 | 99 | //@Deprecated METHOD_PARAMETER(0x0C), |
jjg@309 | 100 | |
jjg@309 | 101 | /** For annotations on a type argument or nested array of a method parameter. */ |
jjg@309 | 102 | METHOD_PARAMETER_GENERIC_OR_ARRAY(0x0D, HasLocation), |
jjg@309 | 103 | |
jjg@309 | 104 | // handled by regular annotations |
jjg@309 | 105 | //@Deprecated FIELD(0x0E), |
jjg@309 | 106 | |
jjg@309 | 107 | /** For annotations on a type argument or nested array of a field. */ |
jjg@309 | 108 | FIELD_GENERIC_OR_ARRAY(0x0F, HasLocation), |
jjg@309 | 109 | |
jjg@309 | 110 | /** For annotations on a bound of a type parameter of a class. */ |
jjg@309 | 111 | CLASS_TYPE_PARAMETER_BOUND(0x10, HasBound, HasParameter), |
jjg@309 | 112 | |
jjg@309 | 113 | /** |
jjg@309 | 114 | * For annotations on a type argument or nested array of a bound of a type |
jjg@309 | 115 | * parameter of a class. |
jjg@309 | 116 | */ |
jjg@309 | 117 | CLASS_TYPE_PARAMETER_BOUND_GENERIC_OR_ARRAY(0x11, HasBound, HasLocation, HasParameter), |
jjg@309 | 118 | |
jjg@309 | 119 | /** For annotations on a bound of a type parameter of a method. */ |
jjg@309 | 120 | METHOD_TYPE_PARAMETER_BOUND(0x12, HasBound, HasParameter), |
jjg@309 | 121 | |
jjg@309 | 122 | /** |
jjg@309 | 123 | * For annotations on a type argument or nested array of a bound of a type |
jjg@309 | 124 | * parameter of a method. |
jjg@309 | 125 | */ |
jjg@309 | 126 | METHOD_TYPE_PARAMETER_BOUND_GENERIC_OR_ARRAY(0x13, HasBound, HasLocation, HasParameter), |
jjg@309 | 127 | |
jjg@309 | 128 | /** For annotations on the type of an "extends" or "implements" clause. */ |
jjg@309 | 129 | CLASS_EXTENDS(0x14), |
jjg@309 | 130 | |
jjg@309 | 131 | /** For annotations on the inner type of an "extends" or "implements" clause. */ |
jjg@309 | 132 | CLASS_EXTENDS_GENERIC_OR_ARRAY(0x15, HasLocation), |
jjg@309 | 133 | |
jjg@309 | 134 | /** For annotations on a throws clause in a method declaration. */ |
jjg@309 | 135 | THROWS(0x16), |
jjg@309 | 136 | |
jjg@309 | 137 | // invalid location |
jjg@309 | 138 | //@Deprecated THROWS_GENERIC_OR_ARRAY(0x17, HasLocation), |
jjg@309 | 139 | |
jjg@309 | 140 | /** For annotations in type arguments of object creation expressions. */ |
jjg@310 | 141 | NEW_TYPE_ARGUMENT(0x18, IsLocal), |
jjg@310 | 142 | NEW_TYPE_ARGUMENT_GENERIC_OR_ARRAY(0x19, HasLocation, IsLocal), |
jjg@309 | 143 | |
jjg@310 | 144 | METHOD_TYPE_ARGUMENT(0x1A, IsLocal), |
jjg@310 | 145 | METHOD_TYPE_ARGUMENT_GENERIC_OR_ARRAY(0x1B, HasLocation, IsLocal), |
jjg@309 | 146 | |
jjg@309 | 147 | WILDCARD_BOUND(0x1C, HasBound), |
jjg@309 | 148 | WILDCARD_BOUND_GENERIC_OR_ARRAY(0x1D, HasBound, HasLocation), |
jjg@309 | 149 | |
jjg@310 | 150 | CLASS_LITERAL(0x1E, IsLocal), |
jjg@310 | 151 | CLASS_LITERAL_GENERIC_OR_ARRAY(0x1F, HasLocation, IsLocal), |
jjg@309 | 152 | |
jjg@309 | 153 | METHOD_TYPE_PARAMETER(0x20, HasParameter), |
jjg@309 | 154 | |
jjg@309 | 155 | // invalid location |
jjg@309 | 156 | //@Deprecated METHOD_TYPE_PARAMETER_GENERIC_OR_ARRAY(0x21, HasLocation, HasParameter), |
jjg@309 | 157 | |
jjg@309 | 158 | CLASS_TYPE_PARAMETER(0x22, HasParameter), |
jjg@309 | 159 | |
jjg@309 | 160 | // invalid location |
jjg@309 | 161 | //@Deprecated CLASS_TYPE_PARAMETER_GENERIC_OR_ARRAY(0x23, HasLocation, HasParameter), |
jjg@309 | 162 | |
jjg@309 | 163 | /** For annotations with an unknown target. */ |
jjg@309 | 164 | UNKNOWN(-1); |
jjg@309 | 165 | |
jjg@309 | 166 | static final int MAXIMUM_TARGET_TYPE_VALUE = 0x22; |
jjg@309 | 167 | |
jjg@309 | 168 | private final int targetTypeValue; |
jjg@309 | 169 | private Set<TargetAttribute> flags; |
jjg@309 | 170 | |
jjg@309 | 171 | TargetType(int targetTypeValue, TargetAttribute... attributes) { |
jjg@309 | 172 | if (targetTypeValue < Byte.MIN_VALUE |
jjg@309 | 173 | || targetTypeValue > Byte.MAX_VALUE) |
jjg@309 | 174 | throw new AssertionError("attribute type value needs to be a byte: " + targetTypeValue); |
jjg@309 | 175 | this.targetTypeValue = (byte)targetTypeValue; |
jjg@309 | 176 | flags = EnumSet.noneOf(TargetAttribute.class); |
jjg@309 | 177 | for (TargetAttribute attr : attributes) |
jjg@309 | 178 | flags.add(attr); |
jjg@309 | 179 | } |
jjg@309 | 180 | |
jjg@309 | 181 | /** |
jjg@309 | 182 | * Returns whether or not this TargetType represents an annotation whose |
jjg@309 | 183 | * target is an inner type of a generic or array type. |
jjg@309 | 184 | * |
jjg@309 | 185 | * @return true if this TargetType represents an annotation on an inner |
jjg@309 | 186 | * type, false otherwise |
jjg@309 | 187 | */ |
jjg@309 | 188 | public boolean hasLocation() { |
jjg@309 | 189 | return flags.contains(HasLocation); |
jjg@309 | 190 | } |
jjg@309 | 191 | |
jjg@309 | 192 | public TargetType getGenericComplement() { |
jjg@309 | 193 | if (hasLocation()) |
jjg@309 | 194 | return this; |
jjg@309 | 195 | else |
jjg@309 | 196 | return fromTargetTypeValue(targetTypeValue() + 1); |
jjg@309 | 197 | } |
jjg@309 | 198 | |
jjg@309 | 199 | /** |
jjg@309 | 200 | * Returns whether or not this TargetType represents an annotation whose |
jjg@309 | 201 | * target has a parameter index. |
jjg@309 | 202 | * |
jjg@309 | 203 | * @return true if this TargetType has a parameter index, |
jjg@309 | 204 | * false otherwise |
jjg@309 | 205 | */ |
jjg@309 | 206 | public boolean hasParameter() { |
jjg@309 | 207 | return flags.contains(HasParameter); |
jjg@309 | 208 | } |
jjg@309 | 209 | |
jjg@309 | 210 | /** |
jjg@309 | 211 | * Returns whether or not this TargetType represents an annotation whose |
jjg@309 | 212 | * target is a type parameter bound. |
jjg@309 | 213 | * |
jjg@309 | 214 | * @return true if this TargetType represents an type parameter bound |
jjg@309 | 215 | * annotation, false otherwise |
jjg@309 | 216 | */ |
jjg@309 | 217 | public boolean hasBound() { |
jjg@309 | 218 | return flags.contains(HasBound); |
jjg@309 | 219 | } |
jjg@309 | 220 | |
jjg@310 | 221 | /** |
jjg@310 | 222 | * Returns whether or not this TargetType represents an annotation whose |
jjg@310 | 223 | * target is exclusively a tree in a method body |
jjg@310 | 224 | * |
jjg@310 | 225 | * Note: wildcard bound targets could target a local tree and a class |
jjg@310 | 226 | * member declaration signature tree |
jjg@310 | 227 | */ |
jjg@310 | 228 | public boolean isLocal() { |
jjg@310 | 229 | return flags.contains(IsLocal); |
jjg@310 | 230 | } |
jjg@310 | 231 | |
jjg@309 | 232 | public int targetTypeValue() { |
jjg@309 | 233 | return this.targetTypeValue; |
jjg@309 | 234 | } |
jjg@309 | 235 | |
jjg@309 | 236 | private static TargetType[] targets = null; |
jjg@309 | 237 | |
jjg@309 | 238 | private static TargetType[] buildTargets() { |
jjg@309 | 239 | TargetType[] targets = new TargetType[MAXIMUM_TARGET_TYPE_VALUE + 1]; |
jjg@309 | 240 | TargetType[] alltargets = values(); |
jjg@309 | 241 | for (TargetType target : alltargets) { |
jjg@309 | 242 | if (target.targetTypeValue >= 0) |
jjg@309 | 243 | targets[target.targetTypeValue] = target; |
jjg@309 | 244 | } |
jjg@309 | 245 | for (int i = 0; i <= MAXIMUM_TARGET_TYPE_VALUE; ++i) { |
jjg@309 | 246 | if (targets[i] == null) |
jjg@309 | 247 | targets[i] = UNKNOWN; |
jjg@309 | 248 | } |
jjg@309 | 249 | return targets; |
jjg@309 | 250 | } |
jjg@309 | 251 | |
jjg@309 | 252 | public static boolean isValidTargetTypeValue(int tag) { |
jjg@309 | 253 | if (targets == null) |
jjg@309 | 254 | targets = buildTargets(); |
jjg@309 | 255 | |
jjg@309 | 256 | if (((byte)tag) == ((byte)UNKNOWN.targetTypeValue)) |
jjg@309 | 257 | return true; |
jjg@309 | 258 | |
jjg@309 | 259 | return (tag >= 0 && tag < targets.length); |
jjg@309 | 260 | } |
jjg@309 | 261 | |
jjg@309 | 262 | public static TargetType fromTargetTypeValue(int tag) { |
jjg@309 | 263 | if (targets == null) |
jjg@309 | 264 | targets = buildTargets(); |
jjg@309 | 265 | |
jjg@309 | 266 | if (((byte)tag) == ((byte)UNKNOWN.targetTypeValue)) |
jjg@309 | 267 | return UNKNOWN; |
jjg@309 | 268 | |
jjg@309 | 269 | if (tag < 0 || tag >= targets.length) |
jjg@309 | 270 | throw new IllegalArgumentException("Unknown TargetType: " + tag); |
jjg@309 | 271 | return targets[tag]; |
jjg@309 | 272 | } |
jjg@309 | 273 | |
jjg@309 | 274 | static enum TargetAttribute { |
jjg@310 | 275 | HasLocation, HasParameter, HasBound, IsLocal; |
jjg@309 | 276 | } |
jjg@309 | 277 | } |