| 1 | /* |
| 2 | * Copyright 2007 brunella ltd |
| 3 | * |
| 4 | * Licensed under the LGPL Version 3 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * |
| 7 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 8 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 9 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 10 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 11 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 12 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 13 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 14 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 15 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 16 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| 17 | * THE POSSIBILITY OF SUCH DAMAGE. |
| 18 | */ |
| 19 | package sf.qof.codegen; |
| 20 | |
| 21 | import static sf.qof.codegen.Constants.FIELD_NAME_BATCH_SIZE; |
| 22 | import static sf.qof.codegen.Constants.FIELD_NAME_DEFAULT_BATCH_SIZE; |
| 23 | import static sf.qof.codegen.Constants.FIELD_NAME_DEFAULT_FETCH_SIZE; |
| 24 | import static sf.qof.codegen.Constants.FIELD_NAME_FETCH_SIZE; |
| 25 | import static sf.qof.codegen.Constants.FIELD_NAME_FIRST_RESULT; |
| 26 | import static sf.qof.codegen.Constants.FIELD_NAME_MAX_RESULTS; |
| 27 | import static sf.qof.codegen.Constants.SIG_init; |
| 28 | import static sf.qof.codegen.Constants.SIG_toString; |
| 29 | import static sf.qof.codegen.Constants.TYPE_SQLException; |
| 30 | import static sf.qof.codegen.Constants.TYPE_int; |
| 31 | |
| 32 | import java.io.BufferedOutputStream; |
| 33 | import java.io.File; |
| 34 | import java.io.FileOutputStream; |
| 35 | import java.io.IOException; |
| 36 | import java.io.OutputStream; |
| 37 | import java.lang.reflect.Constructor; |
| 38 | import java.lang.reflect.Field; |
| 39 | import java.lang.reflect.Modifier; |
| 40 | import java.util.ArrayList; |
| 41 | import java.util.HashMap; |
| 42 | import java.util.HashSet; |
| 43 | import java.util.List; |
| 44 | import java.util.Map; |
| 45 | import java.util.Set; |
| 46 | |
| 47 | import net.sf.cglib.core.ClassEmitter; |
| 48 | import net.sf.cglib.core.CodeEmitter; |
| 49 | import net.sf.cglib.core.Constants; |
| 50 | import net.sf.cglib.core.DebuggingClassWriter; |
| 51 | import net.sf.cglib.core.Signature; |
| 52 | |
| 53 | import org.objectweb.asm.ClassWriter; |
| 54 | import org.objectweb.asm.Type; |
| 55 | |
| 56 | import sf.qof.BaseQuery; |
| 57 | import sf.qof.Paging; |
| 58 | import sf.qof.adapter.DynamicMappingAdapter; |
| 59 | import sf.qof.customizer.Customizer; |
| 60 | import sf.qof.dialect.SQLDialect; |
| 61 | import sf.qof.exception.ValidationException; |
| 62 | import sf.qof.mapping.AdapterMapping; |
| 63 | import sf.qof.mapping.Mapper; |
| 64 | import sf.qof.mapping.Mapping; |
| 65 | import sf.qof.mapping.MappingAdapter; |
| 66 | import sf.qof.mapping.QueryType; |
| 67 | import sf.qof.util.DefineClassHelper; |
| 68 | import sf.qof.util.ReflectionUtils; |
| 69 | |
| 70 | /** |
| 71 | * Internal - QueryObjectGenerator is the main generator class for query objects. |
| 72 | */ |
| 73 | public class QueryObjectGenerator { |
| 74 | |
| 75 | /** |
| 76 | * Default fetch size used if not defined in query definition class. |
| 77 | */ |
| 78 | public static final int DEFAULT_FETCH_SIZE = 100; |
| 79 | |
| 80 | /** |
| 81 | * Default batch size used if not defined in query definition class. |
| 82 | */ |
| 83 | public static final int DEFAULT_BATCH_SIZE = 100; |
| 84 | |
| 85 | private Customizer customizer; |
| 86 | private Class<?> queryDefinitionClass; |
| 87 | private Class<?> superClass; |
| 88 | private String classNameType; |
| 89 | private Map<String, FieldInfo> fields = new HashMap<String, FieldInfo>(); |
| 90 | private SQLDialect sqlDialect; |
| 91 | private boolean implementPaging; |
| 92 | |
| 93 | public QueryObjectGenerator(Customizer customizer, SQLDialect sqlDialect) { |
| 94 | this.customizer = customizer; |
| 95 | this.sqlDialect = sqlDialect; |
| 96 | } |
| 97 | |
| 98 | public SQLDialect getSqlDialect() { |
| 99 | return sqlDialect; |
| 100 | } |
| 101 | |
| 102 | public boolean getImplementPaging() { |
| 103 | return implementPaging; |
| 104 | } |
| 105 | |
| 106 | public String getClassNameType() { |
| 107 | return classNameType; |
| 108 | } |
| 109 | |
| 110 | public Customizer getCustomizer() { |
| 111 | return customizer; |
| 112 | } |
| 113 | |
| 114 | public <T> Class<T> create(Class<T> queryDefinitionClass, List<Mapper> mappers) { |
| 115 | return create(queryDefinitionClass, mappers, Object.class); |
| 116 | } |
| 117 | |
| 118 | public <T> Class<T> create(Class<T> queryDefinitionClass, List<Mapper> mappers, Class<?> superClass) { |
| 119 | this.queryDefinitionClass = queryDefinitionClass; |
| 120 | this.superClass = superClass; |
| 121 | implementPaging = Paging.class.isAssignableFrom(queryDefinitionClass); |
| 122 | try { |
| 123 | String className = customizer.getClassName(queryDefinitionClass); |
| 124 | classNameType = createClassNameType(className); |
| 125 | |
| 126 | if (debugLocation != null) { |
| 127 | printDebugInfo(queryDefinitionClass, mappers); |
| 128 | } |
| 129 | |
| 130 | ClassWriter cw = new DebuggingClassWriter(true); |
| 131 | ClassEmitter ce = new ClassEmitter(cw); |
| 132 | |
| 133 | beginClass(ce); |
| 134 | addStaticInitializer(ce, mappers); |
| 135 | addConstructorAndFields(ce); |
| 136 | addBaseQueryMethods(ce); |
| 137 | if (implementPaging) { |
| 138 | addPagingMethods(ce); |
| 139 | } |
| 140 | addToString(ce); |
| 141 | for (Mapper mapper : mappers) { |
| 142 | addQueryMethod(ce, mapper); |
| 143 | } |
| 144 | endClass(ce); |
| 145 | |
| 146 | return DefineClassHelper.defineClass(className, cw.toByteArray(), |
| 147 | queryDefinitionClass.getClassLoader()); |
| 148 | |
| 149 | } catch (Exception e) { |
| 150 | throw new RuntimeException(e); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | private String createClassNameType(String className) { |
| 155 | return "L" + className.replace('.', '/') + ";"; |
| 156 | } |
| 157 | |
| 158 | private static final String DEBUG_LOCATION_PROPERTY = "cglib.debugLocation"; |
| 159 | |
| 160 | private static String debugLocation; |
| 161 | |
| 162 | static { |
| 163 | debugLocation = System.getProperty(DEBUG_LOCATION_PROPERTY); |
| 164 | } |
| 165 | |
| 166 | private void printDebugInfo(Class<?> queryDefinitionClass, List<Mapper> mappers) { |
| 167 | String dirs = customizer.getClassName(queryDefinitionClass).replace('.', File.separatorChar); |
| 168 | try { |
| 169 | new File(debugLocation + File.separatorChar + dirs).getParentFile().mkdirs(); |
| 170 | |
| 171 | File file = new File(new File(debugLocation), dirs + ".map"); |
| 172 | OutputStream out = new BufferedOutputStream(new FileOutputStream(file)); |
| 173 | |
| 174 | try { |
| 175 | for (Mapper mapper : mappers) { |
| 176 | mapper.printMappingInfo(out); |
| 177 | } |
| 178 | } finally { |
| 179 | out.close(); |
| 180 | } |
| 181 | } catch (IOException e) { |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | private void beginClass(ClassEmitter ce) { |
| 186 | List<Type> interfaceTypes = new ArrayList<Type>(); |
| 187 | interfaceTypes.add(Type.getType(BaseQuery.class)); |
| 188 | if (queryDefinitionClass.isInterface()) { |
| 189 | interfaceTypes.add(Type.getType(queryDefinitionClass)); |
| 190 | } |
| 191 | if (implementPaging) { |
| 192 | interfaceTypes.add(Type.getType(Paging.class)); |
| 193 | } |
| 194 | ce.begin_class(Constants.V1_2, Constants.ACC_PUBLIC, customizer.getClassName(queryDefinitionClass), Type |
| 195 | .getType(superClass), (Type[]) interfaceTypes.toArray(new Type[interfaceTypes.size()]), "<generated>"); |
| 196 | } |
| 197 | |
| 198 | private void endClass(ClassEmitter ce) { |
| 199 | ce.end_class(); |
| 200 | } |
| 201 | |
| 202 | private void addQueryMethod(ClassEmitter ce, Mapper mapper) { |
| 203 | CodeEmitter co; |
| 204 | // int numberOfPersons() throws SQLException |
| 205 | |
| 206 | int access = Constants.ACC_PUBLIC; |
| 207 | if (Modifier.isProtected(mapper.getMethod().getModifiers())) { |
| 208 | access = Constants.ACC_PROTECTED; |
| 209 | } |
| 210 | co = ce.begin_method(access, mapper.getMethod().getSignature(), new Type[] { TYPE_SQLException }, null); |
| 211 | |
| 212 | QueryType queryType = mapper.getQueryType(); |
| 213 | if (queryType == QueryType.QUERY) { |
| 214 | SelectQueryMethodGenerator.addSelectQueryBody(co, this, mapper); |
| 215 | } else if (queryType == QueryType.INSERT || queryType == QueryType.UPDATE || queryType == QueryType.DELETE) { |
| 216 | InsertUpdateDeleteQueryMethodGenerator.addInsertUpdateDeleteQueryBody(co, this, mapper); |
| 217 | } else if (queryType == QueryType.CALL) { |
| 218 | CallQueryMethodGenerator.addCallQueryBody(co, this, mapper); |
| 219 | } else { |
| 220 | throw new RuntimeException("Not supported query type: " + queryType); |
| 221 | } |
| 222 | |
| 223 | co.end_method(); |
| 224 | } |
| 225 | |
| 226 | private void addToString(ClassEmitter ce) { |
| 227 | CodeEmitter co; |
| 228 | co = ce.begin_method(Constants.ACC_PUBLIC, SIG_toString, null, null); |
| 229 | co.push("QueryObject generated from " + queryDefinitionClass.getName()); |
| 230 | co.return_value(); |
| 231 | co.end_method(); |
| 232 | } |
| 233 | |
| 234 | private void addBaseQueryMethods(ClassEmitter ce) { |
| 235 | customizer.getConnectionFactoryCustomizer(queryDefinitionClass).emitGetConnection(queryDefinitionClass, superClass, ce); |
| 236 | customizer.getConnectionFactoryCustomizer(queryDefinitionClass).emitSetConnection(queryDefinitionClass, superClass, ce); |
| 237 | addGetterAndSetter(ce, FIELD_NAME_FETCH_SIZE, "I"); |
| 238 | addGetterAndSetter(ce, FIELD_NAME_BATCH_SIZE, "I"); |
| 239 | } |
| 240 | |
| 241 | private void addPagingMethods(ClassEmitter ce) { |
| 242 | addFieldIfNeeded(ce, FIELD_NAME_FIRST_RESULT, TYPE_int); |
| 243 | addFieldIfNeeded(ce, FIELD_NAME_MAX_RESULTS, TYPE_int); |
| 244 | |
| 245 | addSetterForPaging(ce, FIELD_NAME_FIRST_RESULT, "I"); |
| 246 | addSetterForPaging(ce, FIELD_NAME_MAX_RESULTS, "I"); |
| 247 | } |
| 248 | |
| 249 | private void addGetterAndSetter(ClassEmitter ce, String fieldName, String fieldType) { |
| 250 | addGetter(ce, fieldName, fieldType); |
| 251 | addSetter(ce, fieldName, fieldType); |
| 252 | } |
| 253 | |
| 254 | private void addSetterForPaging(ClassEmitter ce, String fieldName, String fieldType) { |
| 255 | CodeEmitter co; |
| 256 | Signature signature; |
| 257 | // void setField(type) |
| 258 | signature = new Signature("set" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1), "(" |
| 259 | + fieldType + ")Lsf/qof/Paging;"); |
| 260 | co = ce.begin_method(Constants.ACC_PUBLIC, signature, null, null); |
| 261 | co.load_this(); |
| 262 | co.load_arg(0); |
| 263 | emitPutField(co, fieldName); |
| 264 | co.load_this(); |
| 265 | co.return_value(); |
| 266 | co.end_method(); |
| 267 | } |
| 268 | |
| 269 | private void addSetter(ClassEmitter ce, String fieldName, String fieldType) { |
| 270 | CodeEmitter co; |
| 271 | Signature signature; |
| 272 | // void setField(type) |
| 273 | signature = new Signature("set" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1), "(" |
| 274 | + fieldType + ")V"); |
| 275 | co = ce.begin_method(Constants.ACC_PUBLIC, signature, null, null); |
| 276 | co.load_this(); |
| 277 | co.load_arg(0); |
| 278 | emitPutField(co, fieldName); |
| 279 | co.return_value(); |
| 280 | co.end_method(); |
| 281 | } |
| 282 | |
| 283 | private void addGetter(ClassEmitter ce, String fieldName, String fieldType) { |
| 284 | CodeEmitter co; |
| 285 | Signature signature; |
| 286 | // type getField() |
| 287 | signature = new Signature("get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1), "()" |
| 288 | + fieldType); |
| 289 | co = ce.begin_method(Constants.ACC_PUBLIC, signature, null, null); |
| 290 | co.load_this(); |
| 291 | emitGetField(co, fieldName); |
| 292 | co.return_value(); |
| 293 | co.end_method(); |
| 294 | } |
| 295 | |
| 296 | private void addStaticInitializer(ClassEmitter ce, List<Mapper> mappers) { |
| 297 | // create a private static final field for each dynamic adapter |
| 298 | Set<Class<?>> dynamicAdapters = getDynamicAdapterClasses(mappers); |
| 299 | if (dynamicAdapters.size() > 0) { |
| 300 | // static initializer |
| 301 | CodeEmitter co = ce.begin_static(); |
| 302 | for (Class<?> dynamicAdapterClass : dynamicAdapters) { |
| 303 | String fieldName = getAdapterFieldName(dynamicAdapterClass); |
| 304 | Type fieldType = Type.getType(dynamicAdapterClass); |
| 305 | ce.declare_field(Constants.PRIVATE_FINAL_STATIC, fieldName, fieldType, null, null); |
| 306 | co.new_instance(fieldType); |
| 307 | co.dup(); |
| 308 | co.invoke_constructor(fieldType); |
| 309 | co.putfield(fieldName); |
| 310 | } |
| 311 | co.return_value(); |
| 312 | co.end_method(); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | private void addConstructorAndFields(ClassEmitter ce) { |
| 317 | // fields |
| 318 | if (!isFieldInDefinitionClass(FIELD_NAME_DEFAULT_BATCH_SIZE)) { |
| 319 | ce.declare_field(Constants.ACC_PUBLIC + Constants.ACC_FINAL + Constants.ACC_STATIC, |
| 320 | FIELD_NAME_DEFAULT_BATCH_SIZE, TYPE_int, new Integer(DEFAULT_BATCH_SIZE), null); |
| 321 | } |
| 322 | if (!isFieldInDefinitionClass(FIELD_NAME_DEFAULT_FETCH_SIZE)) { |
| 323 | ce.declare_field(Constants.ACC_PUBLIC + Constants.ACC_FINAL + Constants.ACC_STATIC, |
| 324 | FIELD_NAME_DEFAULT_FETCH_SIZE, TYPE_int, new Integer(DEFAULT_FETCH_SIZE), null); |
| 325 | } |
| 326 | |
| 327 | customizer.getConnectionFactoryCustomizer(queryDefinitionClass).emitFields(queryDefinitionClass, superClass, ce); |
| 328 | |
| 329 | addFieldIfNeeded(ce, FIELD_NAME_BATCH_SIZE, TYPE_int); |
| 330 | addFieldIfNeeded(ce, FIELD_NAME_FETCH_SIZE, TYPE_int); |
| 331 | |
| 332 | CodeEmitter co; |
| 333 | // init method |
| 334 | co = ce.begin_method(Constants.ACC_PUBLIC, SIG_init, null, null); |
| 335 | co.load_this(); |
| 336 | if (isFieldInDefinitionClass(FIELD_NAME_DEFAULT_BATCH_SIZE)) { |
| 337 | co.push(getFieldValue(FIELD_NAME_DEFAULT_BATCH_SIZE)); |
| 338 | } else { |
| 339 | co.push(DEFAULT_BATCH_SIZE); |
| 340 | } |
| 341 | emitPutField(co, FIELD_NAME_BATCH_SIZE); |
| 342 | co.load_this(); |
| 343 | if (isFieldInDefinitionClass(FIELD_NAME_DEFAULT_FETCH_SIZE)) { |
| 344 | co.push(getFieldValue(FIELD_NAME_DEFAULT_FETCH_SIZE)); |
| 345 | } else { |
| 346 | co.push(DEFAULT_FETCH_SIZE); |
| 347 | } |
| 348 | emitPutField(co, FIELD_NAME_FETCH_SIZE); |
| 349 | co.return_value(); |
| 350 | co.end_method(); |
| 351 | |
| 352 | Constructor<?>[] superConstructors = superClass.getDeclaredConstructors(); |
| 353 | for (Constructor<?> superConstuctor : superConstructors) { |
| 354 | addConstrcutor(ce, superConstuctor); |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | private void addConstrcutor(ClassEmitter ce, Constructor<?> superConstructor) { |
| 359 | Signature sigConstructor = ReflectionUtils.getConstructorSignature(superConstructor); |
| 360 | CodeEmitter co = ce.begin_method(superConstructor.getModifiers(), sigConstructor, null, null); |
| 361 | co.load_this(); |
| 362 | for (int i = 0; i < superConstructor.getParameterTypes().length; i++) { |
| 363 | co.load_arg(i); |
| 364 | } |
| 365 | co.invoke_constructor(ce.getSuperType(), sigConstructor); |
| 366 | // call init |
| 367 | co.load_this(); |
| 368 | co.invoke_virtual_this(SIG_init); |
| 369 | co.return_value(); |
| 370 | co.end_method(); |
| 371 | } |
| 372 | |
| 373 | private void addFieldIfNeeded(ClassEmitter ce, String fieldName, Type fieldType) { |
| 374 | Field field = null; |
| 375 | try { |
| 376 | field = superClass.getDeclaredField(fieldName); |
| 377 | if (!Type.getType(field.getType()).equals(fieldType)) { |
| 378 | throw new ValidationException("Class has field '" + fieldName + "' that is wrong type"); |
| 379 | } |
| 380 | if (Modifier.isPrivate(field.getModifiers())) { |
| 381 | // warning? |
| 382 | throw new ValidationException("Class has private field '" + fieldName + "'"); |
| 383 | } |
| 384 | } catch (SecurityException e) { |
| 385 | // ignore |
| 386 | } catch (NoSuchFieldException e) { |
| 387 | // ignore |
| 388 | } |
| 389 | if (field == null) { |
| 390 | ce.declare_field(Constants.ACC_PRIVATE, fieldName, fieldType, null, null); |
| 391 | fields.put(fieldName, new FieldInfo(Constants.ACC_PRIVATE, fieldName, ce.getClassType(), fieldType)); |
| 392 | } else { |
| 393 | fields.put(fieldName, new FieldInfo(field.getModifiers(), fieldName, Type.getType(superClass), fieldType)); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | private Set<Class<?>> getDynamicAdapterClasses(List<Mapper> mappers) { |
| 398 | Set<Class<?>> dynamicAdapters = new HashSet<Class<?>>(); |
| 399 | for (Mapper mapper : mappers) { |
| 400 | if (mapper.getParameters() != null) { |
| 401 | for (Mapping mapping : mapper.getParameters()) { |
| 402 | if (mapping instanceof AdapterMapping) { |
| 403 | MappingAdapter adapter = ((AdapterMapping) mapping).getAdapter(); |
| 404 | if (adapter instanceof DynamicMappingAdapter) { |
| 405 | dynamicAdapters.add(adapter.getClass()); |
| 406 | } |
| 407 | } |
| 408 | } |
| 409 | } |
| 410 | if (mapper.getResults() != null) { |
| 411 | for (Mapping mapping : mapper.getResults()) { |
| 412 | if (mapping instanceof AdapterMapping) { |
| 413 | MappingAdapter adapter = ((AdapterMapping) mapping).getAdapter(); |
| 414 | if (adapter instanceof DynamicMappingAdapter) { |
| 415 | dynamicAdapters.add(adapter.getClass()); |
| 416 | } |
| 417 | } |
| 418 | } |
| 419 | } |
| 420 | } |
| 421 | return dynamicAdapters; |
| 422 | } |
| 423 | |
| 424 | public static String getAdapterFieldName(Class<?> adapterClass) { |
| 425 | return adapterClass.getName().replace('.', '$'); |
| 426 | } |
| 427 | |
| 428 | private boolean isFieldInDefinitionClass(String name) { |
| 429 | Field field; |
| 430 | try { |
| 431 | field = queryDefinitionClass.getField(name); |
| 432 | if (field.getType() != int.class) { |
| 433 | throw new ValidationException("Field " + name + " must be of type int"); |
| 434 | } |
| 435 | return true; |
| 436 | } catch (SecurityException e) { |
| 437 | throw new RuntimeException(e); |
| 438 | } catch (NoSuchFieldException e) { |
| 439 | return false; |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | private int getFieldValue(String name) { |
| 444 | Field field; |
| 445 | try { |
| 446 | field = queryDefinitionClass.getField(name); |
| 447 | if (field.getType() != int.class) { |
| 448 | throw new ValidationException("Field " + name + " must be of type int"); |
| 449 | } |
| 450 | return field.getInt(queryDefinitionClass); |
| 451 | } catch (SecurityException e) { |
| 452 | throw new RuntimeException(e); |
| 453 | } catch (NoSuchFieldException e) { |
| 454 | throw new RuntimeException(e); |
| 455 | } catch (IllegalArgumentException e) { |
| 456 | throw new RuntimeException(e); |
| 457 | } catch (IllegalAccessException e) { |
| 458 | throw new RuntimeException(e); |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | private static class FieldInfo { |
| 463 | int access; |
| 464 | String name; |
| 465 | Type type; |
| 466 | Type owner; |
| 467 | |
| 468 | public FieldInfo(int access, String name, Type owner, Type type) { |
| 469 | this.access = access; |
| 470 | this.name = name; |
| 471 | this.owner = owner; |
| 472 | this.type = type; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | public void emitGetField(CodeEmitter co, String fieldName) { |
| 477 | FieldInfo info = fields.get(fieldName); |
| 478 | co.getfield(info.owner, info.name, info.type); |
| 479 | } |
| 480 | |
| 481 | public void emitPutField(CodeEmitter co, String fieldName) { |
| 482 | FieldInfo info = fields.get(fieldName); |
| 483 | co.putfield(info.owner, info.name, info.type); |
| 484 | } |
| 485 | } |