Wed, 23 Jan 2013 13:27:24 -0800
8006775: JSR 308: Compiler changes in JDK8
Reviewed-by: jjg
Contributed-by: mernst@cs.washington.edu, wmdietl@cs.washington.edu, mpapi@csail.mit.edu, mahmood@notnoop.com
jjg@309 | 1 | /* |
jjg@1521 | 2 | * Copyright (c) 2003, 2013, Oracle and/or its affiliates. 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 |
ohair@554 | 7 | * published by the Free Software Foundation. Oracle designates this |
jjg@309 | 8 | * particular file as subject to the "Classpath" exception as provided |
ohair@554 | 9 | * by Oracle 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 | * |
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. |
jjg@309 | 24 | */ |
jjg@309 | 25 | |
jjg@309 | 26 | package com.sun.tools.javac.code; |
jjg@309 | 27 | |
jjg@1521 | 28 | import java.util.Iterator; |
jjg@1521 | 29 | |
jjg@309 | 30 | import com.sun.tools.javac.util.*; |
jjg@309 | 31 | |
jjg@309 | 32 | /** A type annotation position. |
jjg@309 | 33 | * |
jjg@581 | 34 | * <p><b>This is NOT part of any supported API. |
jjg@581 | 35 | * If you write code that depends on this, you do so at your own risk. |
jjg@309 | 36 | * This code and its internal interfaces are subject to change or |
jjg@309 | 37 | * deletion without notice.</b> |
jjg@309 | 38 | */ |
jjg@1521 | 39 | // Code duplicated in com.sun.tools.classfile.TypeAnnotation.Position |
jjg@309 | 40 | public class TypeAnnotationPosition { |
jjg@309 | 41 | |
jjg@1521 | 42 | public enum TypePathEntryKind { |
jjg@1521 | 43 | ARRAY(0), |
jjg@1521 | 44 | INNER_TYPE(1), |
jjg@1521 | 45 | WILDCARD(2), |
jjg@1521 | 46 | TYPE_ARGUMENT(3); |
jjg@1521 | 47 | |
jjg@1521 | 48 | public final int tag; |
jjg@1521 | 49 | |
jjg@1521 | 50 | private TypePathEntryKind(int tag) { |
jjg@1521 | 51 | this.tag = tag; |
jjg@1521 | 52 | } |
jjg@1521 | 53 | } |
jjg@1521 | 54 | |
jjg@1521 | 55 | public static class TypePathEntry { |
jjg@1521 | 56 | /** The fixed number of bytes per TypePathEntry. */ |
jjg@1521 | 57 | public static final int bytesPerEntry = 2; |
jjg@1521 | 58 | |
jjg@1521 | 59 | public final TypePathEntryKind tag; |
jjg@1521 | 60 | public final int arg; |
jjg@1521 | 61 | |
jjg@1521 | 62 | public static final TypePathEntry ARRAY = new TypePathEntry(TypePathEntryKind.ARRAY); |
jjg@1521 | 63 | public static final TypePathEntry INNER_TYPE = new TypePathEntry(TypePathEntryKind.INNER_TYPE); |
jjg@1521 | 64 | public static final TypePathEntry WILDCARD = new TypePathEntry(TypePathEntryKind.WILDCARD); |
jjg@1521 | 65 | |
jjg@1521 | 66 | private TypePathEntry(TypePathEntryKind tag) { |
jjg@1521 | 67 | Assert.check(tag == TypePathEntryKind.ARRAY || |
jjg@1521 | 68 | tag == TypePathEntryKind.INNER_TYPE || |
jjg@1521 | 69 | tag == TypePathEntryKind.WILDCARD, |
jjg@1521 | 70 | "Invalid TypePathEntryKind: " + tag); |
jjg@1521 | 71 | this.tag = tag; |
jjg@1521 | 72 | this.arg = 0; |
jjg@1521 | 73 | } |
jjg@1521 | 74 | |
jjg@1521 | 75 | public TypePathEntry(TypePathEntryKind tag, int arg) { |
jjg@1521 | 76 | Assert.check(tag == TypePathEntryKind.TYPE_ARGUMENT, |
jjg@1521 | 77 | "Invalid TypePathEntryKind: " + tag); |
jjg@1521 | 78 | this.tag = tag; |
jjg@1521 | 79 | this.arg = arg; |
jjg@1521 | 80 | } |
jjg@1521 | 81 | |
jjg@1521 | 82 | public static TypePathEntry fromBinary(int tag, int arg) { |
jjg@1521 | 83 | Assert.check(arg == 0 || tag == TypePathEntryKind.TYPE_ARGUMENT.tag, |
jjg@1521 | 84 | "Invalid TypePathEntry tag/arg: " + tag + "/" + arg); |
jjg@1521 | 85 | switch (tag) { |
jjg@1521 | 86 | case 0: |
jjg@1521 | 87 | return ARRAY; |
jjg@1521 | 88 | case 1: |
jjg@1521 | 89 | return INNER_TYPE; |
jjg@1521 | 90 | case 2: |
jjg@1521 | 91 | return WILDCARD; |
jjg@1521 | 92 | case 3: |
jjg@1521 | 93 | return new TypePathEntry(TypePathEntryKind.TYPE_ARGUMENT, arg); |
jjg@1521 | 94 | default: |
jjg@1521 | 95 | Assert.error("Invalid TypePathEntryKind tag: " + tag); |
jjg@1521 | 96 | return null; |
jjg@1521 | 97 | } |
jjg@1521 | 98 | } |
jjg@1521 | 99 | |
jjg@1521 | 100 | @Override |
jjg@1521 | 101 | public String toString() { |
jjg@1521 | 102 | return tag.toString() + |
jjg@1521 | 103 | (tag == TypePathEntryKind.TYPE_ARGUMENT ? ("(" + arg + ")") : ""); |
jjg@1521 | 104 | } |
jjg@1521 | 105 | |
jjg@1521 | 106 | @Override |
jjg@1521 | 107 | public boolean equals(Object other) { |
jjg@1521 | 108 | if (! (other instanceof TypePathEntry)) { |
jjg@1521 | 109 | return false; |
jjg@1521 | 110 | } |
jjg@1521 | 111 | TypePathEntry tpe = (TypePathEntry) other; |
jjg@1521 | 112 | return this.tag == tpe.tag && this.arg == tpe.arg; |
jjg@1521 | 113 | } |
jjg@1521 | 114 | |
jjg@1521 | 115 | @Override |
jjg@1521 | 116 | public int hashCode() { |
jjg@1521 | 117 | return this.tag.hashCode() * 17 + this.arg; |
jjg@1521 | 118 | } |
jjg@1521 | 119 | } |
jjg@1521 | 120 | |
jjg@309 | 121 | public TargetType type = TargetType.UNKNOWN; |
jjg@309 | 122 | |
jjg@309 | 123 | // For generic/array types. |
jjg@1521 | 124 | public List<TypePathEntry> location = List.nil(); |
jjg@309 | 125 | |
jjg@309 | 126 | // Tree position. |
jjg@309 | 127 | public int pos = -1; |
jjg@309 | 128 | |
jjg@309 | 129 | // For typecasts, type tests, new (and locals, as start_pc). |
jjg@310 | 130 | public boolean isValidOffset = false; |
jjg@309 | 131 | public int offset = -1; |
jjg@309 | 132 | |
jjg@309 | 133 | // For locals. arrays same length |
jjg@478 | 134 | public int[] lvarOffset = null; |
jjg@478 | 135 | public int[] lvarLength = null; |
jjg@478 | 136 | public int[] lvarIndex = null; |
jjg@309 | 137 | |
jjg@309 | 138 | // For type parameter bound |
jjg@478 | 139 | public int bound_index = Integer.MIN_VALUE; |
jjg@309 | 140 | |
jjg@309 | 141 | // For type parameter and method parameter |
jjg@478 | 142 | public int parameter_index = Integer.MIN_VALUE; |
jjg@309 | 143 | |
jjg@1521 | 144 | // For class extends, implements, and throws clauses |
jjg@478 | 145 | public int type_index = Integer.MIN_VALUE; |
jjg@309 | 146 | |
jjg@1521 | 147 | // For exception parameters, index into exception table |
jjg@1521 | 148 | public int exception_index = Integer.MIN_VALUE; |
jjg@1521 | 149 | |
jjg@1521 | 150 | public TypeAnnotationPosition() {} |
jjg@309 | 151 | |
jjg@309 | 152 | @Override |
jjg@309 | 153 | public String toString() { |
jjg@309 | 154 | StringBuilder sb = new StringBuilder(); |
jjg@309 | 155 | sb.append('['); |
jjg@309 | 156 | sb.append(type); |
jjg@309 | 157 | |
jjg@309 | 158 | switch (type) { |
jjg@1521 | 159 | // type cast |
jjg@1521 | 160 | case CAST: |
jjg@1521 | 161 | // instanceof |
jjg@309 | 162 | case INSTANCEOF: |
jjg@1521 | 163 | // new expression |
jjg@309 | 164 | case NEW: |
jjg@309 | 165 | sb.append(", offset = "); |
jjg@309 | 166 | sb.append(offset); |
jjg@309 | 167 | break; |
jjg@1521 | 168 | // local variable |
jjg@309 | 169 | case LOCAL_VARIABLE: |
jjg@1521 | 170 | // resource variable |
jjg@1521 | 171 | case RESOURCE_VARIABLE: |
jjg@1521 | 172 | if (lvarOffset == null) { |
jjg@1521 | 173 | sb.append(", lvarOffset is null!"); |
jjg@1521 | 174 | break; |
jjg@1521 | 175 | } |
jjg@309 | 176 | sb.append(", {"); |
jjg@309 | 177 | for (int i = 0; i < lvarOffset.length; ++i) { |
jjg@309 | 178 | if (i != 0) sb.append("; "); |
jjg@1521 | 179 | sb.append("start_pc = "); |
jjg@309 | 180 | sb.append(lvarOffset[i]); |
jjg@309 | 181 | sb.append(", length = "); |
jjg@309 | 182 | sb.append(lvarLength[i]); |
jjg@309 | 183 | sb.append(", index = "); |
jjg@309 | 184 | sb.append(lvarIndex[i]); |
jjg@309 | 185 | } |
jjg@309 | 186 | sb.append("}"); |
jjg@309 | 187 | break; |
jjg@1521 | 188 | // method receiver |
jjg@309 | 189 | case METHOD_RECEIVER: |
jjg@309 | 190 | // Do nothing |
jjg@309 | 191 | break; |
jjg@1521 | 192 | // type parameter |
jjg@309 | 193 | case CLASS_TYPE_PARAMETER: |
jjg@309 | 194 | case METHOD_TYPE_PARAMETER: |
jjg@309 | 195 | sb.append(", param_index = "); |
jjg@309 | 196 | sb.append(parameter_index); |
jjg@309 | 197 | break; |
jjg@1521 | 198 | // type parameter bound |
jjg@309 | 199 | case CLASS_TYPE_PARAMETER_BOUND: |
jjg@309 | 200 | case METHOD_TYPE_PARAMETER_BOUND: |
jjg@309 | 201 | sb.append(", param_index = "); |
jjg@309 | 202 | sb.append(parameter_index); |
jjg@309 | 203 | sb.append(", bound_index = "); |
jjg@309 | 204 | sb.append(bound_index); |
jjg@309 | 205 | break; |
jjg@1521 | 206 | // class extends or implements clause |
jjg@309 | 207 | case CLASS_EXTENDS: |
jjg@309 | 208 | sb.append(", type_index = "); |
jjg@309 | 209 | sb.append(type_index); |
jjg@309 | 210 | break; |
jjg@1521 | 211 | // throws |
jjg@309 | 212 | case THROWS: |
jjg@309 | 213 | sb.append(", type_index = "); |
jjg@309 | 214 | sb.append(type_index); |
jjg@309 | 215 | break; |
jjg@1521 | 216 | // exception parameter |
jjg@1521 | 217 | case EXCEPTION_PARAMETER: |
jjg@1521 | 218 | sb.append(", exception_index = "); |
jjg@1521 | 219 | sb.append(exception_index); |
jjg@309 | 220 | break; |
jjg@1521 | 221 | // method parameter |
jjg@1521 | 222 | case METHOD_FORMAL_PARAMETER: |
jjg@309 | 223 | sb.append(", param_index = "); |
jjg@309 | 224 | sb.append(parameter_index); |
jjg@309 | 225 | break; |
jjg@1521 | 226 | // method/constructor/reference type argument |
jjg@1521 | 227 | case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT: |
jjg@1521 | 228 | case METHOD_INVOCATION_TYPE_ARGUMENT: |
jjg@1521 | 229 | case METHOD_REFERENCE_TYPE_ARGUMENT: |
jjg@309 | 230 | sb.append(", offset = "); |
jjg@309 | 231 | sb.append(offset); |
jjg@309 | 232 | sb.append(", type_index = "); |
jjg@309 | 233 | sb.append(type_index); |
jjg@309 | 234 | break; |
jjg@1521 | 235 | // We don't need to worry about these |
jjg@1521 | 236 | case METHOD_RETURN: |
jjg@1521 | 237 | case FIELD: |
jjg@1521 | 238 | break; |
jjg@1521 | 239 | // lambda formal parameter |
jjg@1521 | 240 | case LAMBDA_FORMAL_PARAMETER: |
jjg@1521 | 241 | // TODO: also needs an offset? |
jjg@1521 | 242 | sb.append(", param_index = "); |
jjg@1521 | 243 | sb.append(parameter_index); |
jjg@309 | 244 | break; |
jjg@309 | 245 | case UNKNOWN: |
jjg@1521 | 246 | sb.append(", position UNKNOWN!"); |
jjg@309 | 247 | break; |
jjg@309 | 248 | default: |
jjg@1521 | 249 | Assert.error("Unknown target type: " + type); |
jjg@309 | 250 | } |
jjg@309 | 251 | |
jjg@309 | 252 | // Append location data for generics/arrays. |
jjg@1521 | 253 | if (!location.isEmpty()) { |
jjg@309 | 254 | sb.append(", location = ("); |
jjg@309 | 255 | sb.append(location); |
jjg@309 | 256 | sb.append(")"); |
jjg@309 | 257 | } |
jjg@309 | 258 | |
jjg@309 | 259 | sb.append(", pos = "); |
jjg@309 | 260 | sb.append(pos); |
jjg@309 | 261 | |
jjg@309 | 262 | sb.append(']'); |
jjg@309 | 263 | return sb.toString(); |
jjg@309 | 264 | } |
jjg@310 | 265 | |
jjg@310 | 266 | /** |
jjg@310 | 267 | * Indicates whether the target tree of the annotation has been optimized |
jjg@310 | 268 | * away from classfile or not. |
jjg@310 | 269 | * @return true if the target has not been optimized away |
jjg@310 | 270 | */ |
jjg@310 | 271 | public boolean emitToClassfile() { |
jjg@1521 | 272 | return !type.isLocal() || isValidOffset; |
jjg@1521 | 273 | } |
jjg@1521 | 274 | |
jjg@1521 | 275 | /** |
jjg@1521 | 276 | * Decode the binary representation for a type path and set |
jjg@1521 | 277 | * the {@code location} field. |
jjg@1521 | 278 | * |
jjg@1521 | 279 | * @param list The bytecode representation of the type path. |
jjg@1521 | 280 | */ |
jjg@1521 | 281 | public static List<TypePathEntry> getTypePathFromBinary(java.util.List<Integer> list) { |
jjg@1521 | 282 | ListBuffer<TypePathEntry> loc = ListBuffer.lb(); |
jjg@1521 | 283 | Iterator<Integer> iter = list.iterator(); |
jjg@1521 | 284 | while (iter.hasNext()) { |
jjg@1521 | 285 | Integer fst = iter.next(); |
jjg@1521 | 286 | Assert.check(iter.hasNext(), "Could not decode type path: " + list); |
jjg@1521 | 287 | Integer snd = iter.next(); |
jjg@1521 | 288 | loc = loc.append(TypePathEntry.fromBinary(fst, snd)); |
jjg@1521 | 289 | } |
jjg@1521 | 290 | return loc.toList(); |
jjg@1521 | 291 | } |
jjg@1521 | 292 | |
jjg@1521 | 293 | public static List<Integer> getBinaryFromTypePath(java.util.List<TypePathEntry> locs) { |
jjg@1521 | 294 | ListBuffer<Integer> loc = ListBuffer.lb(); |
jjg@1521 | 295 | for (TypePathEntry tpe : locs) { |
jjg@1521 | 296 | loc = loc.append(tpe.tag.tag); |
jjg@1521 | 297 | loc = loc.append(tpe.arg); |
jjg@1521 | 298 | } |
jjg@1521 | 299 | return loc.toList(); |
jjg@310 | 300 | } |
jjg@309 | 301 | } |