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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 | } | ||