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| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 2008, Oracle and/or its affiliates. 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. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package com.sun.tools.jdi; | |
| 27 | + | |
| 28 | +import com.sun.jdi.*; | |
| 29 | + | |
| 30 | +import java.util.List; | |
| 31 | +import java.util.Iterator; | |
| 32 | +import java.util.ArrayList; | |
| 33 | +import java.util.Comparator; | |
| 34 | + | |
| 35 | +public abstract class MethodImpl extends TypeComponentImpl | |
| 36 | + implements Method { | |
| 37 | + private JNITypeParser signatureParser; | |
| 38 | + abstract int argSlotCount() throws AbsentInformationException; | |
| 39 | + | |
| 40 | + abstract List<Location> allLineLocations(SDE.Stratum stratum, | |
| 41 | + String sourceName) | |
| 42 | + throws AbsentInformationException; | |
| 43 | + | |
| 44 | + abstract List<Location> locationsOfLine(SDE.Stratum stratum, | |
| 45 | + String sourceName, | |
| 46 | + int lineNumber) | |
| 47 | + throws AbsentInformationException; | |
| 48 | + | |
| 49 | + MethodImpl(VirtualMachine vm, ReferenceTypeImpl declaringType, | |
| 50 | + long ref, | |
| 51 | + String name, String signature, | |
| 52 | + String genericSignature, int modifiers) { | |
| 53 | + super(vm, declaringType, ref, name, signature, | |
| 54 | + genericSignature, modifiers); | |
| 55 | + signatureParser = new JNITypeParser(signature); | |
| 56 | + } | |
| 57 | + | |
| 58 | + static MethodImpl createMethodImpl(VirtualMachine vm, | |
| 59 | + ReferenceTypeImpl declaringType, | |
| 60 | + long ref, | |
| 61 | + String name, | |
| 62 | + String signature, | |
| 63 | + String genericSignature, | |
| 64 | + int modifiers) { | |
| 65 | + if ((modifiers & | |
| 66 | + (VMModifiers.NATIVE | VMModifiers.ABSTRACT)) != 0) { | |
| 67 | + return new NonConcreteMethodImpl(vm, declaringType, ref, | |
| 68 | + name, signature, | |
| 69 | + genericSignature, | |
| 70 | + modifiers); | |
| 71 | + } else { | |
| 72 | + return new ConcreteMethodImpl(vm, declaringType, ref, | |
| 73 | + name, signature, | |
| 74 | + genericSignature, | |
| 75 | + modifiers); | |
| 76 | + } | |
| 77 | + } | |
| 78 | + | |
| 79 | + public boolean equals(Object obj) { | |
| 80 | + if ((obj != null) && (obj instanceof MethodImpl)) { | |
| 81 | + MethodImpl other = (MethodImpl)obj; | |
| 82 | + return (declaringType().equals(other.declaringType())) && | |
| 83 | + (ref() == other.ref()) && | |
| 84 | + super.equals(obj); | |
| 85 | + } else { | |
| 86 | + return false; | |
| 87 | + } | |
| 88 | + } | |
| 89 | + | |
| 90 | + public int hashCode() { | |
| 91 | + return (int)ref(); | |
| 92 | + } | |
| 93 | + | |
| 94 | + public final List<Location> allLineLocations() | |
| 95 | + throws AbsentInformationException { | |
| 96 | + return allLineLocations(vm.getDefaultStratum(), null); | |
| 97 | + } | |
| 98 | + | |
| 99 | + public List<Location> allLineLocations(String stratumID, | |
| 100 | + String sourceName) | |
| 101 | + throws AbsentInformationException { | |
| 102 | + return allLineLocations(declaringType.stratum(stratumID), | |
| 103 | + sourceName); | |
| 104 | + } | |
| 105 | + | |
| 106 | + public final List<Location> locationsOfLine(int lineNumber) | |
| 107 | + throws AbsentInformationException { | |
| 108 | + return locationsOfLine(vm.getDefaultStratum(), | |
| 109 | + null, lineNumber); | |
| 110 | + } | |
| 111 | + | |
| 112 | + public List<Location> locationsOfLine(String stratumID, | |
| 113 | + String sourceName, | |
| 114 | + int lineNumber) | |
| 115 | + throws AbsentInformationException { | |
| 116 | + return locationsOfLine(declaringType.stratum(stratumID), | |
| 117 | + sourceName, lineNumber); | |
| 118 | + } | |
| 119 | + | |
| 120 | + LineInfo codeIndexToLineInfo(SDE.Stratum stratum, | |
| 121 | + long codeIndex) { | |
| 122 | + if (stratum.isJava()) { | |
| 123 | + return new BaseLineInfo(-1, declaringType); | |
| 124 | + } else { | |
| 125 | + return new StratumLineInfo(stratum.id(), -1, | |
| 126 | + null, null); | |
| 127 | + } | |
| 128 | + } | |
| 129 | + | |
| 130 | + /** | |
| 131 | + * @return a text representation of the declared return type | |
| 132 | + * of this method. | |
| 133 | + */ | |
| 134 | + public String returnTypeName() { | |
| 135 | + return signatureParser.typeName(); | |
| 136 | + } | |
| 137 | + | |
| 138 | + private String returnSignature() { | |
| 139 | + return signatureParser.signature(); | |
| 140 | + } | |
| 141 | + | |
| 142 | + public Type returnType() throws ClassNotLoadedException { | |
| 143 | + return findType(returnSignature()); | |
| 144 | + } | |
| 145 | + | |
| 146 | + public Type findType(String signature) throws ClassNotLoadedException { | |
| 147 | + ReferenceTypeImpl enclosing = (ReferenceTypeImpl)declaringType(); | |
| 148 | + return enclosing.findType(signature); | |
| 149 | + } | |
| 150 | + | |
| 151 | + public List<String> argumentTypeNames() { | |
| 152 | + return signatureParser.argumentTypeNames(); | |
| 153 | + } | |
| 154 | + | |
| 155 | + public List<String> argumentSignatures() { | |
| 156 | + return signatureParser.argumentSignatures(); | |
| 157 | + } | |
| 158 | + | |
| 159 | + Type argumentType(int index) throws ClassNotLoadedException { | |
| 160 | + ReferenceTypeImpl enclosing = (ReferenceTypeImpl)declaringType(); | |
| 161 | + String signature = argumentSignatures().get(index); | |
| 162 | + return enclosing.findType(signature); | |
| 163 | + } | |
| 164 | + | |
| 165 | + public List<Type> argumentTypes() throws ClassNotLoadedException { | |
| 166 | + int size = argumentSignatures().size(); | |
| 167 | + ArrayList<Type> types = new ArrayList<Type>(size); | |
| 168 | + for (int i = 0; i < size; i++) { | |
| 169 | + Type type = argumentType(i); | |
| 170 | + types.add(type); | |
| 171 | + } | |
| 172 | + | |
| 173 | + return types; | |
| 174 | + } | |
| 175 | + | |
| 176 | + public int compareTo(Method method) { | |
| 177 | + ReferenceTypeImpl declaringType = (ReferenceTypeImpl)declaringType(); | |
| 178 | + int rc = declaringType.compareTo(method.declaringType()); | |
| 179 | + if (rc == 0) { | |
| 180 | + rc = declaringType.indexOf(this) - | |
| 181 | + declaringType.indexOf(method); | |
| 182 | + } | |
| 183 | + return rc; | |
| 184 | + } | |
| 185 | + | |
| 186 | + public boolean isAbstract() { | |
| 187 | + return isModifierSet(VMModifiers.ABSTRACT); | |
| 188 | + } | |
| 189 | + | |
| 190 | + public boolean isSynchronized() { | |
| 191 | + return isModifierSet(VMModifiers.SYNCHRONIZED); | |
| 192 | + } | |
| 193 | + | |
| 194 | + public boolean isNative() { | |
| 195 | + return isModifierSet(VMModifiers.NATIVE); | |
| 196 | + } | |
| 197 | + | |
| 198 | + public boolean isVarArgs() { | |
| 199 | + return isModifierSet(VMModifiers.VARARGS); | |
| 200 | + } | |
| 201 | + | |
| 202 | + public boolean isBridge() { | |
| 203 | + return isModifierSet(VMModifiers.BRIDGE); | |
| 204 | + } | |
| 205 | + | |
| 206 | + public boolean isConstructor() { | |
| 207 | + return name().equals("<init>"); | |
| 208 | + } | |
| 209 | + | |
| 210 | + public boolean isStaticInitializer() { | |
| 211 | + return name().equals("<clinit>"); | |
| 212 | + } | |
| 213 | + | |
| 214 | + public boolean isObsolete() { | |
| 215 | + try { | |
| 216 | + return JDWP.Method.IsObsolete.process(vm, | |
| 217 | + declaringType, ref).isObsolete; | |
| 218 | + } catch (JDWPException exc) { | |
| 219 | + throw exc.toJDIException(); | |
| 220 | + } | |
| 221 | + } | |
| 222 | + | |
| 223 | + | |
| 224 | + /* | |
| 225 | + * A container class for the return value to allow | |
| 226 | + * proper type-checking. | |
| 227 | + */ | |
| 228 | + class ReturnContainer implements ValueContainer { | |
| 229 | + ReturnContainer() { | |
| 230 | + } | |
| 231 | + public Type type() throws ClassNotLoadedException { | |
| 232 | + return returnType(); | |
| 233 | + } | |
| 234 | + public String typeName(){ | |
| 235 | + return returnTypeName(); | |
| 236 | + } | |
| 237 | + public String signature() { | |
| 238 | + return returnSignature(); //type().signature(); | |
| 239 | + } | |
| 240 | + public Type findType(String signature) throws ClassNotLoadedException { | |
| 241 | + return MethodImpl.this.findType(signature); | |
| 242 | + } | |
| 243 | + } | |
| 244 | + ReturnContainer retValContainer = null; | |
| 245 | + ReturnContainer getReturnValueContainer() { | |
| 246 | + if (retValContainer == null) { | |
| 247 | + retValContainer = new ReturnContainer(); | |
| 248 | + } | |
| 249 | + return retValContainer; | |
| 250 | + } | |
| 251 | + | |
| 252 | + /* | |
| 253 | + * A container class for the argument to allow | |
| 254 | + * proper type-checking. | |
| 255 | + */ | |
| 256 | + class ArgumentContainer implements ValueContainer { | |
| 257 | + int index; | |
| 258 | + | |
| 259 | + ArgumentContainer(int index) { | |
| 260 | + this.index = index; | |
| 261 | + } | |
| 262 | + public Type type() throws ClassNotLoadedException { | |
| 263 | + return argumentType(index); | |
| 264 | + } | |
| 265 | + public String typeName(){ | |
| 266 | + return argumentTypeNames().get(index); | |
| 267 | + } | |
| 268 | + public String signature() { | |
| 269 | + return argumentSignatures().get(index); | |
| 270 | + } | |
| 271 | + public Type findType(String signature) throws ClassNotLoadedException { | |
| 272 | + return MethodImpl.this.findType(signature); | |
| 273 | + } | |
| 274 | + } | |
| 275 | + | |
| 276 | + /* | |
| 277 | + * This is a var args method. Thus, its last param is an | |
| 278 | + * array. If the method has n params, then: | |
| 279 | + * 1. If there are n args and the last is the same type as the type of | |
| 280 | + * the last param, do nothing. IE, a String[] | |
| 281 | + * can be passed to a String... | |
| 282 | + * 2. If there are >= n arguments and for each arg whose number is >= n, | |
| 283 | + * the arg type is 'compatible' with the component type of | |
| 284 | + * the last param, then do | |
| 285 | + * - create an array of the type of the last param | |
| 286 | + * - put the n, ... args into this array. | |
| 287 | + * We might have to do conversions here. | |
| 288 | + * - put this array into arguments(n) | |
| 289 | + * - delete arguments(n+1), ... | |
| 290 | + * NOTE that this might modify the input list. | |
| 291 | + */ | |
| 292 | + void handleVarArgs(List<Value> arguments) | |
| 293 | + throws ClassNotLoadedException, InvalidTypeException { | |
| 294 | + List<Type> paramTypes = this.argumentTypes(); | |
| 295 | + ArrayType lastParamType = (ArrayType)paramTypes.get(paramTypes.size() - 1); | |
| 296 | + Type componentType = lastParamType.componentType(); | |
| 297 | + int argCount = arguments.size(); | |
| 298 | + int paramCount = paramTypes.size(); | |
| 299 | + if (argCount < paramCount - 1) { | |
| 300 | + // Error; will be caught later. | |
| 301 | + return; | |
| 302 | + } | |
| 303 | + if (argCount == paramCount - 1) { | |
| 304 | + // It is ok to pass 0 args to the var arg. | |
| 305 | + // We have to gen a 0 length array. | |
| 306 | + ArrayReference argArray = lastParamType.newInstance(0); | |
| 307 | + arguments.add(argArray); | |
| 308 | + return; | |
| 309 | + } | |
| 310 | + Value nthArgValue = arguments.get(paramCount - 1); | |
| 311 | + if (nthArgValue == null) { | |
| 312 | + return; | |
| 313 | + } | |
| 314 | + Type nthArgType = nthArgValue.type(); | |
| 315 | + if (nthArgType instanceof ArrayTypeImpl) { | |
| 316 | + if (argCount == paramCount && | |
| 317 | + ((ArrayTypeImpl)nthArgType).isAssignableTo(lastParamType)) { | |
| 318 | + /* | |
| 319 | + * This is case 1. A compatible array is being passed to the | |
| 320 | + * var args array param. We don't have to do anything. | |
| 321 | + */ | |
| 322 | + return; | |
| 323 | + } | |
| 324 | + } | |
| 325 | + | |
| 326 | + /* | |
| 327 | + * Case 2. We have to verify that the n, n+1, ... args are compatible | |
| 328 | + * with componentType, and do conversions if necessary and create | |
| 329 | + * an array of componentType to hold these possibly converted values. | |
| 330 | + */ | |
| 331 | + int count = argCount - paramCount + 1; | |
| 332 | + ArrayReference argArray = lastParamType.newInstance(count); | |
| 333 | + | |
| 334 | + /* | |
| 335 | + * This will copy arguments(paramCount - 1) ... to argArray(0) ... | |
| 336 | + * doing whatever conversions are needed! It will throw an | |
| 337 | + * exception if an incompatible arg is encountered | |
| 338 | + */ | |
| 339 | + argArray.setValues(0, arguments, paramCount - 1, count); | |
| 340 | + arguments.set(paramCount - 1, argArray); | |
| 341 | + | |
| 342 | + /* | |
| 343 | + * Remove the excess args | |
| 344 | + */ | |
| 345 | + for (int ii = paramCount; ii < argCount; ii++) { | |
| 346 | + arguments.remove(paramCount); | |
| 347 | + } | |
| 348 | + return; | |
| 349 | + } | |
| 350 | + | |
| 351 | + /* | |
| 352 | + * The output list will be different than the input list. | |
| 353 | + */ | |
| 354 | + List<Value> validateAndPrepareArgumentsForInvoke(List<? extends Value> origArguments) | |
| 355 | + throws ClassNotLoadedException, InvalidTypeException { | |
| 356 | + | |
| 357 | + List<Value> arguments = new ArrayList<Value>(origArguments); | |
| 358 | + if (isVarArgs()) { | |
| 359 | + handleVarArgs(arguments); | |
| 360 | + } | |
| 361 | + | |
| 362 | + int argSize = arguments.size(); | |
| 363 | + | |
| 364 | + JNITypeParser parser = new JNITypeParser(signature()); | |
| 365 | + List signatures = parser.argumentSignatures(); | |
| 366 | + | |
| 367 | + if (signatures.size() != argSize) { | |
| 368 | + throw new IllegalArgumentException("Invalid argument count: expected " + | |
| 369 | + signatures.size() + ", received " + | |
| 370 | + arguments.size()); | |
| 371 | + } | |
| 372 | + | |
| 373 | + for (int i = 0; i < argSize; i++) { | |
| 374 | + Value value = arguments.get(i); | |
| 375 | + value = ValueImpl.prepareForAssignment(value, | |
| 376 | + new ArgumentContainer(i)); | |
| 377 | + arguments.set(i, value); | |
| 378 | + } | |
| 379 | + return arguments; | |
| 380 | + } | |
| 381 | + | |
| 382 | + public String toString() { | |
| 383 | + StringBuffer sb = new StringBuffer(); | |
| 384 | + sb.append(declaringType().name()); | |
| 385 | + sb.append("."); | |
| 386 | + sb.append(name()); | |
| 387 | + sb.append("("); | |
| 388 | + boolean first = true; | |
| 389 | + for (String name : argumentTypeNames()) { | |
| 390 | + if (!first) { | |
| 391 | + sb.append(", "); | |
| 392 | + } | |
| 393 | + sb.append(name); | |
| 394 | + first = false; | |
| 395 | + } | |
| 396 | + sb.append(")"); | |
| 397 | + return sb.toString(); | |
| 398 | + } | |
| 399 | +} | |