net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/Compiler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.compiler;
  12
  13 import java.io.PrintWriter;
  14 import java.io.StringWriter;
  15 import java.util.Map;
  16
  17 import net.sourceforge.phpdt.core.compiler.IProblem;
  18 import net.sourceforge.phpdt.internal.compiler.env.IBinaryType;
  19 import net.sourceforge.phpdt.internal.compiler.env.ICompilationUnit;
  20 import net.sourceforge.phpdt.internal.compiler.env.INameEnvironment;
  21 import net.sourceforge.phpdt.internal.compiler.env.ISourceType;
  22 import net.sourceforge.phpdt.internal.compiler.impl.ITypeRequestor;
  23 import net.sourceforge.phpdt.internal.compiler.lookup.LookupEnvironment;
  24 import net.sourceforge.phpdt.internal.compiler.lookup.PackageBinding;
  25 import net.sourceforge.phpdt.internal.compiler.parser.UnitParser;
  26 import net.sourceforge.phpdt.internal.compiler.problem.AbortCompilation;
  27 import net.sourceforge.phpdt.internal.compiler.problem.AbortCompilationUnit;
  28 import net.sourceforge.phpdt.internal.compiler.problem.ProblemReporter;
  29 import net.sourceforge.phpdt.internal.compiler.problem.ProblemSeverities;
  30 import net.sourceforge.phpdt.internal.compiler.util.Util;
  31 import net.sourceforge.phpeclipse.internal.compiler.ast.CompilationUnitDeclaration;
  32 import net.sourceforge.phpeclipse.internal.compiler.ast.TypeDeclaration;
  33
  34 public class Compiler implements ITypeRequestor, ProblemSeverities {
  35         public UnitParser parser;
  36         public ICompilerRequestor requestor;
  37 //      public CompilerOptions options;
  38         public ProblemReporter problemReporter;
  39
  40         // management of unit to be processed
  41         //public CompilationUnitResult currentCompilationUnitResult;
  42         public CompilationUnitDeclaration[] unitsToProcess;
  43         public int totalUnits; // (totalUnits-1) gives the last unit in unitToProcess
  44
  45         // name lookup
  46         public LookupEnvironment lookupEnvironment;
  47
  48         // ONCE STABILIZED, THESE SHOULD RETURN TO A FINAL FIELD
  49         public static boolean DEBUG = false;
  50         public int parseThreshold = -1;
  51         // number of initial units parsed at once (-1: none)
  52
  53         /*
  54          * Static requestor reserved to listening compilation results in debug mode,
  55          * so as for example to monitor compiler activity independantly from a particular
  56          * builder implementation. It is reset at the end of compilation, and should not
  57          * persist any information after having been reset.
  58          */
  59 //      public static IDebugRequestor DebugRequestor = null;
  60
  61         /**
  62          * Answer a new compiler using the given name environment and compiler options.
  63          * The environment and options will be in effect for the lifetime of the compiler.
  64          * When the compiler is run, compilation results are sent to the given requestor.
  65          *
  66          *  @param environment org.eclipse.jdt.internal.compiler.api.env.INameEnvironment
  67          *      Environment used by the compiler in order to resolve type and package
  68          *      names. The name environment implements the actual connection of the compiler
  69          *      to the outside world (e.g. in batch mode the name environment is performing
  70          *      pure file accesses, reuse previous build state or connection to repositories).
  71          *      Note: the name environment is responsible for implementing the actual classpath
  72          *            rules.
  73          *
  74          *  @param policy org.eclipse.jdt.internal.compiler.api.problem.IErrorHandlingPolicy
  75          *      Configurable part for problem handling, allowing the compiler client to
  76          *      specify the rules for handling problems (stop on first error or accumulate
  77          *      them all) and at the same time perform some actions such as opening a dialog
  78          *      in UI when compiling interactively.
  79          *      @see org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies
  80          *
  81          *  @param requestor org.eclipse.jdt.internal.compiler.api.ICompilerRequestor
  82          *      Component which will receive and persist all compilation results and is intended
  83          *      to consume them as they are produced. Typically, in a batch compiler, it is
  84          *      responsible for writing out the actual .class files to the file system.
  85          *      @see org.eclipse.jdt.internal.compiler.CompilationResult
  86          *
  87          *  @param problemFactory org.eclipse.jdt.internal.compiler.api.problem.IProblemFactory
  88          *      Factory used inside the compiler to create problem descriptors. It allows the
  89          *      compiler client to supply its own representation of compilation problems in
  90          *      order to avoid object conversions. Note that the factory is not supposed
  91          *      to accumulate the created problems, the compiler will gather them all and hand
  92          *      them back as part of the compilation unit result.
  93          */
  94         public Compiler(
  95                 INameEnvironment environment,
  96                 IErrorHandlingPolicy policy,
  97 //              Map settings,
  98                 final ICompilerRequestor requestor,
  99                 IProblemFactory problemFactory) {
 100
 101                 // create a problem handler given a handling policy
 102 //              this.options = new CompilerOptions(settings);
 103
 104                 // wrap requestor in DebugRequestor if one is specified
 105 //              if(DebugRequestor == null) {
 106                         this.requestor = requestor;
 107 //              } else {
 108 //                      this.requestor = new ICompilerRequestor(){
 109 //                              public void acceptResult(CompilationResult result){
 110 //                                      if (DebugRequestor.isActive()){
 111 //                                              DebugRequestor.acceptDebugResult(result);
 112 //                                      }
 113 //                                      requestor.acceptResult(result);
 114 //                              }
 115 //                      };
 116 //              }
 117                 this.problemReporter =
 118                         new ProblemReporter(policy, problemFactory);//this.options, problemFactory);
 119                 this.lookupEnvironment =
 120                         new LookupEnvironment(this, problemReporter, environment); //options, problemReporter, environment);
 121                 this.parser =
 122                         new UnitParser(
 123                                 problemReporter);
 124 //                              this.options.parseLiteralExpressionsAsConstants,
 125 //                              options.sourceLevel >= CompilerOptions.JDK1_4);
 126         }
 127
 128         /**
 129          * Answer a new compiler using the given name environment and compiler options.
 130          * The environment and options will be in effect for the lifetime of the compiler.
 131          * When the compiler is run, compilation results are sent to the given requestor.
 132          *
 133          *  @param environment org.eclipse.jdt.internal.compiler.api.env.INameEnvironment
 134          *      Environment used by the compiler in order to resolve type and package
 135          *      names. The name environment implements the actual connection of the compiler
 136          *      to the outside world (e.g. in batch mode the name environment is performing
 137          *      pure file accesses, reuse previous build state or connection to repositories).
 138          *      Note: the name environment is responsible for implementing the actual classpath
 139          *            rules.
 140          *
 141          *  @param policy org.eclipse.jdt.internal.compiler.api.problem.IErrorHandlingPolicy
 142          *      Configurable part for problem handling, allowing the compiler client to
 143          *      specify the rules for handling problems (stop on first error or accumulate
 144          *      them all) and at the same time perform some actions such as opening a dialog
 145          *      in UI when compiling interactively.
 146          *      @see org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies
 147          *
 148          *  @param requestor org.eclipse.jdt.internal.compiler.api.ICompilerRequestor
 149          *      Component which will receive and persist all compilation results and is intended
 150          *      to consume them as they are produced. Typically, in a batch compiler, it is
 151          *      responsible for writing out the actual .class files to the file system.
 152          *      @see org.eclipse.jdt.internal.compiler.CompilationResult
 153          *
 154          *  @param problemFactory org.eclipse.jdt.internal.compiler.api.problem.IProblemFactory
 155          *      Factory used inside the compiler to create problem descriptors. It allows the
 156          *      compiler client to supply its own representation of compilation problems in
 157          *      order to avoid object conversions. Note that the factory is not supposed
 158          *      to accumulate the created problems, the compiler will gather them all and hand
 159          *      them back as part of the compilation unit result.
 160          *      @param parseLiteralExpressionsAsConstants <code>boolean</code>
 161          *              This parameter is used to optimize the literals or leave them as they are in the source.
 162          *              If you put true, "Hello" + " world" will be converted to "Hello world".
 163          */
 164         public Compiler(
 165                 INameEnvironment environment,
 166                 IErrorHandlingPolicy policy,
 167 //              Map settings,
 168                 final ICompilerRequestor requestor,
 169                 IProblemFactory problemFactory,
 170                 boolean parseLiteralExpressionsAsConstants) {
 171
 172                 // create a problem handler given a handling policy
 173 //              this.options = new CompilerOptions(settings);
 174
 175                 // wrap requestor in DebugRequestor if one is specified
 176 //              if(DebugRequestor == null) {
 177                         this.requestor = requestor;
 178 //              } else {
 179 //                      this.requestor = new ICompilerRequestor(){
 180 //                              public void acceptResult(CompilationResult result){
 181 //                                      if (DebugRequestor.isActive()){
 182 //                                              DebugRequestor.acceptDebugResult(result);
 183 //                                      }
 184 //                                      requestor.acceptResult(result);
 185 //                              }
 186 //                      };
 187 //              }
 188                 this.problemReporter =
 189                         new ProblemReporter(policy, problemFactory);//, this.options, problemFactory);
 190                 this.lookupEnvironment =
 191                         new LookupEnvironment(this, problemReporter, environment);//options, problemReporter, environment);
 192                 this.parser =
 193                         new UnitParser(
 194                                 problemReporter);
 195 //                              parseLiteralExpressionsAsConstants,
 196                                 //                              this.options.sourceLevel >= CompilerOptions.JDK1_4);
 197         }
 198
 199         /**
 200          * Add an additional binary type
 201          */
 202         public void accept(IBinaryType binaryType, PackageBinding packageBinding) {
 203                 lookupEnvironment.createBinaryTypeFrom(binaryType, packageBinding);
 204         }
 205
 206         /**
 207          * Add an additional compilation unit into the loop
 208          *  ->  build compilation unit declarations, their bindings and record their results.
 209          */
 210         public void accept(ICompilationUnit sourceUnit) {
 211                 // Switch the current policy and compilation result for this unit to the requested one.
 212                 CompilationResult unitResult =
 213                         new CompilationResult(sourceUnit, totalUnits, totalUnits, 10); //this.options.maxProblemsPerUnit);
 214                 try {
 215                         // diet parsing for large collection of unit
 216                         CompilationUnitDeclaration parsedUnit;
 217                         if (totalUnits < parseThreshold) {
 218                                 parsedUnit = parser.parse(sourceUnit, unitResult);
 219                         } else {
 220                                 parsedUnit = parser.dietParse(sourceUnit, unitResult);
 221                         }
 222
 223 //                      if (options.verbose) {
 224 //                              String count = String.valueOf(totalUnits + 1);
 225 //                              System.out.println(
 226 //                                      Util.bind(
 227 //                                              "compilation.request" , //$NON-NLS-1$
 228 //                                              new String[] {
 229 //                                                      count,
 230 //                                                      count,
 231 //                                                      new String(sourceUnit.getFileName())}));
 232 //                      }
 233
 234                         // initial type binding creation
 235                         lookupEnvironment.buildTypeBindings(parsedUnit);
 236                         this.addCompilationUnit(sourceUnit, parsedUnit);
 237
 238                         // binding resolution
 239                         lookupEnvironment.completeTypeBindings(parsedUnit);
 240                 } catch (AbortCompilationUnit e) {
 241                         // at this point, currentCompilationUnitResult may not be sourceUnit, but some other
 242                         // one requested further along to resolve sourceUnit.
 243                         if (unitResult.compilationUnit == sourceUnit) { // only report once
 244                                 requestor.acceptResult(unitResult.tagAsAccepted());
 245                         } else {
 246                                 throw e; // want to abort enclosing request to compile
 247                         }
 248                 }
 249         }
 250
 251         /**
 252          * Add additional source types
 253          */
 254         public void accept(ISourceType[] sourceTypes, PackageBinding packageBinding) {
 255                 problemReporter.abortDueToInternalError(
 256                         Util.bind(
 257                                 "abort.againstSourceModel " , //$NON-NLS-1$
 258                                 String.valueOf(sourceTypes[0].getName()),
 259                                 String.valueOf(sourceTypes[0].getFileName())));
 260         }
 261
 262         protected void addCompilationUnit(
 263                 ICompilationUnit sourceUnit,
 264                 CompilationUnitDeclaration parsedUnit) {
 265
 266                 // append the unit to the list of ones to process later on
 267                 int size = unitsToProcess.length;
 268                 if (totalUnits == size)
 269                         // when growing reposition units starting at position 0
 270                         System.arraycopy(
 271                                 unitsToProcess,
 272                                 0,
 273                                 (unitsToProcess = new CompilationUnitDeclaration[size * 2]),
 274                                 0,
 275                                 totalUnits);
 276                 unitsToProcess[totalUnits++] = parsedUnit;
 277         }
 278
 279         /**
 280          * Add the initial set of compilation units into the loop
 281          *  ->  build compilation unit declarations, their bindings and record their results.
 282          */
 283         protected void beginToCompile(ICompilationUnit[] sourceUnits) {
 284                 int maxUnits = sourceUnits.length;
 285                 totalUnits = 0;
 286                 unitsToProcess = new CompilationUnitDeclaration[maxUnits];
 287
 288                 // Switch the current policy and compilation result for this unit to the requested one.
 289                 for (int i = 0; i < maxUnits; i++) {
 290                         CompilationUnitDeclaration parsedUnit;
 291                         CompilationResult unitResult =
 292                                 new CompilationResult(sourceUnits[i], i, maxUnits, 10);//, this.options.maxProblemsPerUnit);
 293                         try {
 294                                 // diet parsing for large collection of units
 295                                 if (totalUnits < parseThreshold) {
 296                                         parsedUnit = parser.parse(sourceUnits[i], unitResult);
 297                                 } else {
 298                                         parsedUnit = parser.dietParse(sourceUnits[i], unitResult);
 299                                 }
 300 //                              if (options.verbose) {
 301 //                                      System.out.println(
 302 //                                              Util.bind(
 303 //                                                      "compilation.request" , //$NON-NLS-1$
 304 //                                                      new String[] {
 305 //                                                              String.valueOf(i + 1),
 306 //                                                              String.valueOf(maxUnits),
 307 //                                                              new String(sourceUnits[i].getFileName())}));
 308 //                              }
 309                                 // initial type binding creation
 310                                 lookupEnvironment.buildTypeBindings(parsedUnit);
 311                                 this.addCompilationUnit(sourceUnits[i], parsedUnit);
 312                                 //} catch (AbortCompilationUnit e) {
 313                                 //      requestor.acceptResult(unitResult.tagAsAccepted());
 314                         } finally {
 315                                 sourceUnits[i] = null; // no longer hold onto the unit
 316                         }
 317                 }
 318                 // binding resolution
 319                 lookupEnvironment.completeTypeBindings();
 320         }
 321
 322         /**
 323          * General API
 324          * -> compile each of supplied files
 325          * -> recompile any required types for which we have an incomplete principle structure
 326          */
 327         public void compile(ICompilationUnit[] sourceUnits) {
 328                 CompilationUnitDeclaration unit = null;
 329                 int i = 0;
 330                 try {
 331                         // build and record parsed units
 332
 333                         beginToCompile(sourceUnits);
 334
 335                         // process all units (some more could be injected in the loop by the lookup environment)
 336                         for (; i < totalUnits; i++) {
 337                                 unit = unitsToProcess[i];
 338                                 try {
 339 //                                      if (options.verbose)
 340 //                                              System.out.println(
 341 //                                                      Util.bind(
 342 //                                                              "compilation.process" , //$NON-NLS-1$
 343 //                                                              new String[] {
 344 //                                                                      String.valueOf(i + 1),
 345 //                                                                      String.valueOf(totalUnits),
 346 //                                                                      new String(unitsToProcess[i].getFileName())}));
 347                                         process(unit, i);
 348                                 } finally {
 349                                         // cleanup compilation unit result
 350                                         unit.cleanUp();
 351 //                                      if (options.verbose)
 352 //                                              System.out.println(Util.bind("compilation.done", //$NON-NLS-1$
 353 //                                      new String[] {
 354 //                                              String.valueOf(i + 1),
 355 //                                              String.valueOf(totalUnits),
 356 //                                              new String(unitsToProcess[i].getFileName())}));
 357                                 }
 358                                 unitsToProcess[i] = null; // release reference to processed unit declaration
 359                                 requestor.acceptResult(unit.compilationResult.tagAsAccepted());
 360                         }
 361                 } catch (AbortCompilation e) {
 362                         this.handleInternalException(e, unit);
 363                 } catch (Error e) {
 364                         this.handleInternalException(e, unit, null);
 365                         throw e; // rethrow
 366                 } catch (RuntimeException e) {
 367                         this.handleInternalException(e, unit, null);
 368                         throw e; // rethrow
 369                 } finally {
 370                         this.reset();
 371                 }
 372 //              if (options.verbose) {
 373 //                      if (totalUnits > 1) {
 374 //                              System.out.println(
 375 //                                      Util.bind("compilation.units" , String.valueOf(totalUnits))); //$NON-NLS-1$
 376 //                      } else {
 377 //                              System.out.println(
 378 //                                      Util.bind("compilation.unit" , String.valueOf(totalUnits))); //$NON-NLS-1$
 379 //                      }
 380 //              }
 381         }
 382
 383         protected void getMethodBodies(CompilationUnitDeclaration unit, int place) {
 384                 //fill the methods bodies in order for the code to be generated
 385
 386                 if (unit.ignoreMethodBodies) {
 387                         unit.ignoreFurtherInvestigation = true;
 388                         return;
 389                         // if initial diet parse did not work, no need to dig into method bodies.
 390                 }
 391
 392                 if (place < parseThreshold)
 393                         return; //work already done ...
 394
 395                 //real parse of the method....
 396                 parser.scanner.setSource(
 397                         unit.compilationResult.compilationUnit.getContents());
 398                 if (unit.types != null) {
 399                         for (int i = unit.types.size(); --i >= 0;)
 400                           if (unit.types.get(i) instanceof TypeDeclaration) {
 401                                   ((TypeDeclaration)unit.types.get(i)).parseMethod(parser, unit);
 402                           }
 403                 }
 404         }
 405
 406         /*
 407          * Compiler crash recovery in case of unexpected runtime exceptions
 408          */
 409         protected void handleInternalException(
 410                 Throwable internalException,
 411                 CompilationUnitDeclaration unit,
 412                 CompilationResult result) {
 413
 414                 /* dump a stack trace to the console */
 415                 internalException.printStackTrace();
 416
 417                 /* find a compilation result */
 418                 if ((unit != null)) // basing result upon the current unit if available
 419                         result = unit.compilationResult; // current unit being processed ?
 420                 if ((result == null) && (unitsToProcess != null) && (totalUnits > 0))
 421                         result = unitsToProcess[totalUnits - 1].compilationResult;
 422                 // last unit in beginToCompile ?
 423
 424                 if (result != null) {
 425                         /* create and record a compilation problem */
 426                         StringWriter stringWriter = new StringWriter();
 427                         PrintWriter writer = new PrintWriter(stringWriter);
 428                         internalException.printStackTrace(writer);
 429                         StringBuffer buffer = stringWriter.getBuffer();
 430
 431                         String[] pbArguments = new String[] {
 432                                 Util.bind("compilation.internalError" ) //$NON-NLS-1$
 433                                         + "\n"  //$NON-NLS-1$
 434                                         + buffer.toString()};
 435
 436                         result
 437                                 .record(
 438                                         problemReporter
 439                                         .createProblem(
 440                                                 result.getFileName(),
 441                                                 IProblem.Unclassified,
 442                                                 pbArguments,
 443                                                 pbArguments,
 444                                                 Error, // severity
 445                                                 0, // source start
 446                                                 0, // source end
 447                                                 0, // line number
 448                                                 unit,
 449                                                 result),
 450                                         unit);
 451
 452                         /* hand back the compilation result */
 453                         if (!result.hasBeenAccepted) {
 454                                 requestor.acceptResult(result.tagAsAccepted());
 455                         }
 456                 }
 457         }
 458
 459         /*
 460          * Compiler recovery in case of internal AbortCompilation event
 461          */
 462         protected void handleInternalException(
 463                 AbortCompilation abortException,
 464                 CompilationUnitDeclaration unit) {
 465
 466                 /* special treatment for SilentAbort: silently cancelling the compilation process */
 467                 if (abortException.isSilent) {
 468                         if (abortException.silentException == null) {
 469                                 return;
 470                         } else {
 471                                 throw abortException.silentException;
 472                         }
 473                 }
 474
 475                 /* uncomment following line to see where the abort came from */
 476                 // abortException.printStackTrace();
 477
 478                 // Exception may tell which compilation result it is related, and which problem caused it
 479                 CompilationResult result = abortException.compilationResult;
 480                 if ((result == null) && (unit != null))
 481                         result = unit.compilationResult; // current unit being processed ?
 482                 if ((result == null) && (unitsToProcess != null) && (totalUnits > 0))
 483                         result = unitsToProcess[totalUnits - 1].compilationResult;
 484                 // last unit in beginToCompile ?
 485                 if (result != null && !result.hasBeenAccepted) {
 486                         /* distant problem which could not be reported back there */
 487                         if (abortException.problemId != 0) {
 488                                 result
 489                                         .record(
 490                                                 problemReporter
 491                                                 .createProblem(
 492                                                         result.getFileName(),
 493                                                         abortException.problemId,
 494                                                         abortException.problemArguments,
 495                                                         abortException.messageArguments,
 496                                                         Error, // severity
 497                                                         0, // source start
 498                                                         0, // source end
 499                                                         0, // line number
 500                                                         unit,
 501                                                         result),
 502                                                 unit);
 503                         } else {
 504                                 /* distant internal exception which could not be reported back there */
 505                                 if (abortException.exception != null) {
 506                                         this.handleInternalException(abortException.exception, null, result);
 507                                         return;
 508                                 }
 509                         }
 510                         /* hand back the compilation result */
 511                         if (!result.hasBeenAccepted) {
 512                                 requestor.acceptResult(result.tagAsAccepted());
 513                         }
 514                 } else {
 515                         /*
 516                         if (abortException.problemId != 0){
 517                                 IProblem problem =
 518                                         problemReporter.createProblem(
 519                                                 "???".toCharArray(),
 520                                                 abortException.problemId,
 521                                                 abortException.problemArguments,
 522                                                 Error, // severity
 523                                                 0, // source start
 524                                                 0, // source end
 525                                                 0); // line number
 526                                 System.out.println(problem.getMessage());
 527                         }
 528                         */
 529                         abortException.printStackTrace();
 530                 }
 531         }
 532
 533         /**
 534          * Process a compilation unit already parsed and build.
 535          */
 536         public void process(CompilationUnitDeclaration unit, int i) {
 537
 538                 getMethodBodies(unit, i);
 539
 540                 // fault in fields & methods
 541                 if (unit.scope != null)
 542                         unit.scope.faultInTypes();
 543
 544                 // verify inherited methods
 545                 if (unit.scope != null)
 546                         unit.scope.verifyMethods(lookupEnvironment.methodVerifier());
 547
 548                 // type checking
 549                 unit.resolve();
 550
 551                 // flow analysis
 552                 unit.analyseCode();
 553
 554                 // code generation
 555 //              unit.generateCode();
 556
 557                 // reference info
 558 //              if (options.produceReferenceInfo && unit.scope != null)
 559 //                      unit.scope.storeDependencyInfo();
 560
 561                 // refresh the total number of units known at this stage
 562                 unit.compilationResult.totalUnitsKnown = totalUnits;
 563         }
 564         public void reset() {
 565                 lookupEnvironment.reset();
 566                 parser.scanner.source = null;
 567                 unitsToProcess = null;
 568 //              if (DebugRequestor != null) DebugRequestor.reset();
 569         }
 570
 571         /**
 572          * Internal API used to resolve a given compilation unit. Can run a subset of the compilation process
 573          */
 574         public CompilationUnitDeclaration resolve(
 575                         ICompilationUnit sourceUnit,
 576                         boolean verifyMethods,
 577                         boolean analyzeCode) {
 578 //                      boolean generateCode) {
 579
 580                 CompilationUnitDeclaration unit = null;
 581                 try {
 582                         // build and record parsed units
 583                         parseThreshold = 0; // will request a full parse
 584                         beginToCompile(new ICompilationUnit[] { sourceUnit });
 585                         // process all units (some more could be injected in the loop by the lookup environment)
 586                         unit = unitsToProcess[0];
 587                         getMethodBodies(unit, 0);
 588                         if (unit.scope != null) {
 589 //                              // fault in fields & methods
 590 //                              unit.scope.faultInTypes();
 591
 592 //                              if (unit.scope != null && verifyMethods) {
 593 //                                      // http://dev.eclipse.org/bugs/show_bug.cgi?id=23117
 594 //                                      // verify inherited methods
 595 //                                      unit.scope.verifyMethods(lookupEnvironment.methodVerifier());
 596 //                              }
 597 //                              // type checking
 598 //                              unit.resolve();
 599
 600                                 // flow analysis
 601 //                              if (analyzeCode) unit.analyseCode();
 602
 603                                 // code generation
 604 //                              if (generateCode) unit.generateCode();
 605                         }
 606                         unitsToProcess[0] = null; // release reference to processed unit declaration
 607                         requestor.acceptResult(unit.compilationResult.tagAsAccepted());
 608                         return unit;
 609                 } catch (AbortCompilation e) {
 610                         this.handleInternalException(e, unit);
 611                         return unit == null ? unitsToProcess[0] : unit;
 612                 } catch (Error e) {
 613                         this.handleInternalException(e, unit, null);
 614                         throw e; // rethrow
 615                 } catch (RuntimeException e) {
 616                         this.handleInternalException(e, unit, null);
 617                         throw e; // rethrow
 618                 } finally {
 619                         // No reset is performed there anymore since,
 620                         // within the CodeAssist (or related tools),
 621                         // the compiler may be called *after* a call
 622                         // to this resolve(...) method. And such a call
 623                         // needs to have a compiler with a non-empty
 624                         // environment.
 625                         // this.reset();
 626                 }
 627         }
 628 }