Sun, 16 Dec 2012 11:09:36 +0100
8005098: Provide isSynthesized() information on Attribute.Compound
Reviewed-by: jjg
jjg@46 | 1 | /* |
ohair@554 | 2 | * Copyright (c) 2007, 2009, Oracle and/or its affiliates. All rights reserved. |
jjg@46 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
jjg@46 | 4 | * |
jjg@46 | 5 | * This code is free software; you can redistribute it and/or modify it |
jjg@46 | 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@46 | 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@46 | 10 | * |
jjg@46 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
jjg@46 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
jjg@46 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
jjg@46 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
jjg@46 | 15 | * accompanied this code). |
jjg@46 | 16 | * |
jjg@46 | 17 | * You should have received a copy of the GNU General Public License version |
jjg@46 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
jjg@46 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
jjg@46 | 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@46 | 24 | */ |
jjg@46 | 25 | |
jjg@46 | 26 | package com.sun.tools.classfile; |
jjg@46 | 27 | |
jjg@46 | 28 | import java.io.IOException; |
jjg@46 | 29 | |
jjg@46 | 30 | /** |
jjh@972 | 31 | * See JVMS, section 4.8.4. |
jjg@46 | 32 | * |
jjg@581 | 33 | * <p><b>This is NOT part of any supported API. |
jjg@581 | 34 | * If you write code that depends on this, you do so at your own risk. |
jjg@46 | 35 | * This code and its internal interfaces are subject to change or |
jjg@46 | 36 | * deletion without notice.</b> |
jjg@46 | 37 | */ |
jjg@46 | 38 | public class StackMapTable_attribute extends Attribute { |
jjg@46 | 39 | static class InvalidStackMap extends AttributeException { |
jjg@198 | 40 | private static final long serialVersionUID = -5659038410855089780L; |
jjg@46 | 41 | InvalidStackMap(String msg) { |
jjg@46 | 42 | super(msg); |
jjg@46 | 43 | } |
jjg@46 | 44 | } |
jjg@46 | 45 | |
jjg@46 | 46 | StackMapTable_attribute(ClassReader cr, int name_index, int length) |
jjg@46 | 47 | throws IOException, InvalidStackMap { |
jjg@46 | 48 | super(name_index, length); |
jjg@46 | 49 | number_of_entries = cr.readUnsignedShort(); |
jjg@46 | 50 | entries = new stack_map_frame[number_of_entries]; |
jjg@46 | 51 | for (int i = 0; i < number_of_entries; i++) |
jjg@46 | 52 | entries[i] = stack_map_frame.read(cr); |
jjg@46 | 53 | } |
jjg@46 | 54 | |
jjg@46 | 55 | public StackMapTable_attribute(ConstantPool constant_pool, stack_map_frame[] entries) |
jjg@46 | 56 | throws ConstantPoolException { |
jjg@46 | 57 | this(constant_pool.getUTF8Index(Attribute.StackMapTable), entries); |
jjg@46 | 58 | } |
jjg@46 | 59 | |
jjg@46 | 60 | public StackMapTable_attribute(int name_index, stack_map_frame[] entries) { |
jjg@46 | 61 | super(name_index, length(entries)); |
jjg@46 | 62 | this.number_of_entries = entries.length; |
jjg@46 | 63 | this.entries = entries; |
jjg@46 | 64 | } |
jjg@46 | 65 | |
jjg@46 | 66 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 67 | return visitor.visitStackMapTable(this, data); |
jjg@46 | 68 | } |
jjg@46 | 69 | |
jjg@46 | 70 | static int length(stack_map_frame[] entries) { |
jjg@46 | 71 | int n = 2; |
jjg@46 | 72 | for (stack_map_frame entry: entries) |
jjg@46 | 73 | n += entry.length(); |
jjg@46 | 74 | return n; |
jjg@46 | 75 | } |
jjg@46 | 76 | |
jjg@46 | 77 | public final int number_of_entries; |
jjg@46 | 78 | public final stack_map_frame entries[]; |
jjg@46 | 79 | |
jjg@46 | 80 | public static abstract class stack_map_frame { |
jjg@46 | 81 | static stack_map_frame read(ClassReader cr) |
jjg@46 | 82 | throws IOException, InvalidStackMap { |
jjg@46 | 83 | int frame_type = cr.readUnsignedByte(); |
jjg@46 | 84 | if (frame_type <= 63) |
jjg@46 | 85 | return new same_frame(frame_type); |
jjg@46 | 86 | else if (frame_type <= 127) |
jjg@46 | 87 | return new same_locals_1_stack_item_frame(frame_type, cr); |
jjg@46 | 88 | else if (frame_type <= 246) |
jjg@46 | 89 | throw new Error("unknown frame_type " + frame_type); |
jjg@46 | 90 | else if (frame_type == 247) |
jjg@46 | 91 | return new same_locals_1_stack_item_frame_extended(frame_type, cr); |
jjg@46 | 92 | else if (frame_type <= 250) |
jjg@46 | 93 | return new chop_frame(frame_type, cr); |
jjg@46 | 94 | else if (frame_type == 251) |
jjg@46 | 95 | return new same_frame_extended(frame_type, cr); |
jjg@46 | 96 | else if (frame_type <= 254) |
jjg@46 | 97 | return new append_frame(frame_type, cr); |
jjg@46 | 98 | else |
jjg@46 | 99 | return new full_frame(frame_type, cr); |
jjg@46 | 100 | } |
jjg@46 | 101 | |
jjg@46 | 102 | protected stack_map_frame(int frame_type) { |
jjg@46 | 103 | this.frame_type = frame_type; |
jjg@46 | 104 | } |
jjg@46 | 105 | |
jjg@46 | 106 | public int length() { |
jjg@46 | 107 | return 1; |
jjg@46 | 108 | } |
jjg@46 | 109 | |
jjg@283 | 110 | public abstract int getOffsetDelta(); |
jjg@283 | 111 | |
jjg@46 | 112 | public abstract <R,D> R accept(Visitor<R,D> visitor, D data); |
jjg@46 | 113 | |
jjg@46 | 114 | public final int frame_type; |
jjg@46 | 115 | |
jjg@46 | 116 | public static interface Visitor<R,P> { |
jjg@46 | 117 | R visit_same_frame(same_frame frame, P p); |
jjg@46 | 118 | R visit_same_locals_1_stack_item_frame(same_locals_1_stack_item_frame frame, P p); |
jjg@46 | 119 | R visit_same_locals_1_stack_item_frame_extended(same_locals_1_stack_item_frame_extended frame, P p); |
jjg@46 | 120 | R visit_chop_frame(chop_frame frame, P p); |
jjg@46 | 121 | R visit_same_frame_extended(same_frame_extended frame, P p); |
jjg@46 | 122 | R visit_append_frame(append_frame frame, P p); |
jjg@46 | 123 | R visit_full_frame(full_frame frame, P p); |
jjg@46 | 124 | } |
jjg@46 | 125 | } |
jjg@46 | 126 | |
jjg@46 | 127 | public static class same_frame extends stack_map_frame { |
jjg@46 | 128 | same_frame(int frame_type) { |
jjg@46 | 129 | super(frame_type); |
jjg@46 | 130 | } |
jjg@46 | 131 | |
jjg@46 | 132 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 133 | return visitor.visit_same_frame(this, data); |
jjg@46 | 134 | } |
jjg@283 | 135 | |
jjg@283 | 136 | public int getOffsetDelta() { |
jjg@283 | 137 | return frame_type; |
jjg@283 | 138 | } |
jjg@46 | 139 | } |
jjg@46 | 140 | |
jjg@46 | 141 | public static class same_locals_1_stack_item_frame extends stack_map_frame { |
jjg@46 | 142 | same_locals_1_stack_item_frame(int frame_type, ClassReader cr) |
jjg@46 | 143 | throws IOException, InvalidStackMap { |
jjg@46 | 144 | super(frame_type); |
jjg@46 | 145 | stack = new verification_type_info[1]; |
jjg@46 | 146 | stack[0] = verification_type_info.read(cr); |
jjg@46 | 147 | } |
jjg@46 | 148 | |
jjg@46 | 149 | @Override |
jjg@46 | 150 | public int length() { |
jjg@46 | 151 | return super.length() + stack[0].length(); |
jjg@46 | 152 | } |
jjg@46 | 153 | |
jjg@46 | 154 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 155 | return visitor.visit_same_locals_1_stack_item_frame(this, data); |
jjg@46 | 156 | } |
jjg@46 | 157 | |
jjg@283 | 158 | public int getOffsetDelta() { |
jjg@283 | 159 | return frame_type - 64; |
jjg@283 | 160 | } |
jjg@283 | 161 | |
jjg@46 | 162 | public final verification_type_info[] stack; |
jjg@46 | 163 | } |
jjg@46 | 164 | |
jjg@46 | 165 | public static class same_locals_1_stack_item_frame_extended extends stack_map_frame { |
jjg@46 | 166 | same_locals_1_stack_item_frame_extended(int frame_type, ClassReader cr) |
jjg@46 | 167 | throws IOException, InvalidStackMap { |
jjg@46 | 168 | super(frame_type); |
jjg@46 | 169 | offset_delta = cr.readUnsignedShort(); |
jjg@46 | 170 | stack = new verification_type_info[1]; |
jjg@46 | 171 | stack[0] = verification_type_info.read(cr); |
jjg@46 | 172 | } |
jjg@46 | 173 | |
jjg@46 | 174 | @Override |
jjg@46 | 175 | public int length() { |
jjg@46 | 176 | return super.length() + 2 + stack[0].length(); |
jjg@46 | 177 | } |
jjg@46 | 178 | |
jjg@46 | 179 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 180 | return visitor.visit_same_locals_1_stack_item_frame_extended(this, data); |
jjg@46 | 181 | } |
jjg@46 | 182 | |
jjg@283 | 183 | public int getOffsetDelta() { |
jjg@283 | 184 | return offset_delta; |
jjg@283 | 185 | } |
jjg@283 | 186 | |
jjg@46 | 187 | public final int offset_delta; |
jjg@46 | 188 | public final verification_type_info[] stack; |
jjg@46 | 189 | } |
jjg@46 | 190 | |
jjg@46 | 191 | public static class chop_frame extends stack_map_frame { |
jjg@46 | 192 | chop_frame(int frame_type, ClassReader cr) throws IOException { |
jjg@46 | 193 | super(frame_type); |
jjg@46 | 194 | offset_delta = cr.readUnsignedShort(); |
jjg@46 | 195 | } |
jjg@46 | 196 | |
jjg@46 | 197 | @Override |
jjg@46 | 198 | public int length() { |
jjg@46 | 199 | return super.length() + 2; |
jjg@46 | 200 | } |
jjg@46 | 201 | |
jjg@46 | 202 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 203 | return visitor.visit_chop_frame(this, data); |
jjg@46 | 204 | } |
jjg@46 | 205 | |
jjg@283 | 206 | public int getOffsetDelta() { |
jjg@283 | 207 | return offset_delta; |
jjg@283 | 208 | } |
jjg@283 | 209 | |
jjg@46 | 210 | public final int offset_delta; |
jjg@46 | 211 | } |
jjg@46 | 212 | |
jjg@46 | 213 | public static class same_frame_extended extends stack_map_frame { |
jjg@46 | 214 | same_frame_extended(int frame_type, ClassReader cr) throws IOException { |
jjg@46 | 215 | super(frame_type); |
jjg@46 | 216 | offset_delta = cr.readUnsignedShort(); |
jjg@46 | 217 | } |
jjg@46 | 218 | |
jjg@46 | 219 | @Override |
jjg@46 | 220 | public int length() { |
jjg@46 | 221 | return super.length() + 2; |
jjg@46 | 222 | } |
jjg@46 | 223 | |
jjg@46 | 224 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 225 | return visitor.visit_same_frame_extended(this, data); |
jjg@46 | 226 | } |
jjg@46 | 227 | |
jjg@283 | 228 | public int getOffsetDelta() { |
jjg@283 | 229 | return offset_delta; |
jjg@283 | 230 | } |
jjg@283 | 231 | |
jjg@46 | 232 | public final int offset_delta; |
jjg@46 | 233 | } |
jjg@46 | 234 | |
jjg@46 | 235 | public static class append_frame extends stack_map_frame { |
jjg@46 | 236 | append_frame(int frame_type, ClassReader cr) |
jjg@46 | 237 | throws IOException, InvalidStackMap { |
jjg@46 | 238 | super(frame_type); |
jjg@46 | 239 | offset_delta = cr.readUnsignedShort(); |
jjg@46 | 240 | locals = new verification_type_info[frame_type - 251]; |
jjg@46 | 241 | for (int i = 0; i < locals.length; i++) |
jjg@46 | 242 | locals[i] = verification_type_info.read(cr); |
jjg@46 | 243 | } |
jjg@46 | 244 | |
jjg@46 | 245 | @Override |
jjg@46 | 246 | public int length() { |
jjg@46 | 247 | int n = super.length() + 2; |
jjg@46 | 248 | for (verification_type_info local: locals) |
jjg@46 | 249 | n += local.length(); |
jjg@46 | 250 | return n; |
jjg@46 | 251 | } |
jjg@46 | 252 | |
jjg@46 | 253 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 254 | return visitor.visit_append_frame(this, data); |
jjg@46 | 255 | } |
jjg@46 | 256 | |
jjg@283 | 257 | public int getOffsetDelta() { |
jjg@283 | 258 | return offset_delta; |
jjg@283 | 259 | } |
jjg@283 | 260 | |
jjg@46 | 261 | public final int offset_delta; |
jjg@46 | 262 | public final verification_type_info[] locals; |
jjg@46 | 263 | } |
jjg@46 | 264 | |
jjg@46 | 265 | public static class full_frame extends stack_map_frame { |
jjg@46 | 266 | full_frame(int frame_type, ClassReader cr) |
jjg@46 | 267 | throws IOException, InvalidStackMap { |
jjg@46 | 268 | super(frame_type); |
jjg@46 | 269 | offset_delta = cr.readUnsignedShort(); |
jjg@46 | 270 | number_of_locals = cr.readUnsignedShort(); |
jjg@46 | 271 | locals = new verification_type_info[number_of_locals]; |
jjg@46 | 272 | for (int i = 0; i < locals.length; i++) |
jjg@46 | 273 | locals[i] = verification_type_info.read(cr); |
jjg@46 | 274 | number_of_stack_items = cr.readUnsignedShort(); |
jjg@46 | 275 | stack = new verification_type_info[number_of_stack_items]; |
jjg@46 | 276 | for (int i = 0; i < stack.length; i++) |
jjg@46 | 277 | stack[i] = verification_type_info.read(cr); |
jjg@46 | 278 | } |
jjg@46 | 279 | |
jjg@46 | 280 | @Override |
jjg@46 | 281 | public int length() { |
jjg@46 | 282 | int n = super.length() + 2; |
jjg@46 | 283 | for (verification_type_info local: locals) |
jjg@46 | 284 | n += local.length(); |
jjg@46 | 285 | n += 2; |
jjg@46 | 286 | for (verification_type_info item: stack) |
jjg@46 | 287 | n += item.length(); |
jjg@46 | 288 | return n; |
jjg@46 | 289 | } |
jjg@46 | 290 | |
jjg@46 | 291 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 292 | return visitor.visit_full_frame(this, data); |
jjg@46 | 293 | } |
jjg@46 | 294 | |
jjg@283 | 295 | public int getOffsetDelta() { |
jjg@283 | 296 | return offset_delta; |
jjg@283 | 297 | } |
jjg@283 | 298 | |
jjg@46 | 299 | public final int offset_delta; |
jjg@46 | 300 | public final int number_of_locals; |
jjg@46 | 301 | public final verification_type_info[] locals; |
jjg@46 | 302 | public final int number_of_stack_items; |
jjg@46 | 303 | public final verification_type_info[] stack; |
jjg@46 | 304 | } |
jjg@46 | 305 | |
jjg@46 | 306 | public static class verification_type_info { |
jjg@46 | 307 | public static final int ITEM_Top = 0; |
jjg@46 | 308 | public static final int ITEM_Integer = 1; |
jjg@46 | 309 | public static final int ITEM_Float = 2; |
jjg@46 | 310 | public static final int ITEM_Long = 4; |
jjg@46 | 311 | public static final int ITEM_Double = 3; |
jjg@46 | 312 | public static final int ITEM_Null = 5; |
jjg@46 | 313 | public static final int ITEM_UninitializedThis = 6; |
jjg@46 | 314 | public static final int ITEM_Object = 7; |
jjg@46 | 315 | public static final int ITEM_Uninitialized = 8; |
jjg@46 | 316 | |
jjg@46 | 317 | static verification_type_info read(ClassReader cr) |
jjg@46 | 318 | throws IOException, InvalidStackMap { |
jjg@46 | 319 | int tag = cr.readUnsignedByte(); |
jjg@46 | 320 | switch (tag) { |
jjg@46 | 321 | case ITEM_Top: |
jjg@46 | 322 | case ITEM_Integer: |
jjg@46 | 323 | case ITEM_Float: |
jjg@46 | 324 | case ITEM_Long: |
jjg@46 | 325 | case ITEM_Double: |
jjg@46 | 326 | case ITEM_Null: |
jjg@46 | 327 | case ITEM_UninitializedThis: |
jjg@46 | 328 | return new verification_type_info(tag); |
jjg@46 | 329 | |
jjg@46 | 330 | case ITEM_Object: |
jjg@46 | 331 | return new Object_variable_info(cr); |
jjg@46 | 332 | |
jjg@46 | 333 | case ITEM_Uninitialized: |
jjg@46 | 334 | return new Uninitialized_variable_info(cr); |
jjg@46 | 335 | |
jjg@46 | 336 | default: |
jjg@46 | 337 | throw new InvalidStackMap("unrecognized verification_type_info tag"); |
jjg@46 | 338 | } |
jjg@46 | 339 | } |
jjg@46 | 340 | |
jjg@283 | 341 | protected verification_type_info(int tag) { |
jjg@46 | 342 | this.tag = tag; |
jjg@46 | 343 | } |
jjg@46 | 344 | |
jjg@46 | 345 | public int length() { |
jjg@46 | 346 | return 1; |
jjg@46 | 347 | } |
jjg@46 | 348 | |
jjg@46 | 349 | public final int tag; |
jjg@46 | 350 | } |
jjg@46 | 351 | |
jjg@46 | 352 | public static class Object_variable_info extends verification_type_info { |
jjg@46 | 353 | Object_variable_info(ClassReader cr) throws IOException { |
jjg@46 | 354 | super(ITEM_Object); |
jjg@46 | 355 | cpool_index = cr.readUnsignedShort(); |
jjg@46 | 356 | } |
jjg@46 | 357 | |
jjg@46 | 358 | @Override |
jjg@46 | 359 | public int length() { |
jjg@46 | 360 | return super.length() + 2; |
jjg@46 | 361 | } |
jjg@46 | 362 | |
jjg@46 | 363 | public final int cpool_index; |
jjg@46 | 364 | } |
jjg@46 | 365 | |
jjg@46 | 366 | public static class Uninitialized_variable_info extends verification_type_info { |
jjg@46 | 367 | Uninitialized_variable_info(ClassReader cr) throws IOException { |
jjg@46 | 368 | super(ITEM_Uninitialized); |
jjg@46 | 369 | offset = cr.readUnsignedShort(); |
jjg@46 | 370 | } |
jjg@46 | 371 | |
jjg@46 | 372 | @Override |
jjg@46 | 373 | public int length() { |
jjg@46 | 374 | return super.length() + 2; |
jjg@46 | 375 | } |
jjg@46 | 376 | |
jjg@46 | 377 | public final int offset; |
jjg@46 | 378 | |
jjg@46 | 379 | } |
jjg@46 | 380 | } |