Set version 1.1.9
[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / Compiler.java
index 6583d9e..a360dae 100644 (file)
@@ -9,16 +9,18 @@
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package net.sourceforge.phpdt.internal.compiler;
-
 import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.util.Map;
 
 import net.sourceforge.phpdt.core.compiler.IProblem;
+import net.sourceforge.phpdt.internal.compiler.ast.CompilationUnitDeclaration;
+import net.sourceforge.phpdt.internal.compiler.ast.TypeDeclaration;
 import net.sourceforge.phpdt.internal.compiler.env.IBinaryType;
 import net.sourceforge.phpdt.internal.compiler.env.ICompilationUnit;
 import net.sourceforge.phpdt.internal.compiler.env.INameEnvironment;
 import net.sourceforge.phpdt.internal.compiler.env.ISourceType;
+import net.sourceforge.phpdt.internal.compiler.impl.CompilerOptions;
 import net.sourceforge.phpdt.internal.compiler.impl.ITypeRequestor;
 import net.sourceforge.phpdt.internal.compiler.lookup.LookupEnvironment;
 import net.sourceforge.phpdt.internal.compiler.lookup.PackageBinding;
@@ -28,574 +30,505 @@ import net.sourceforge.phpdt.internal.compiler.problem.AbortCompilationUnit;
 import net.sourceforge.phpdt.internal.compiler.problem.ProblemReporter;
 import net.sourceforge.phpdt.internal.compiler.problem.ProblemSeverities;
 import net.sourceforge.phpdt.internal.compiler.util.Util;
-import net.sourceforge.phpeclipse.internal.compiler.ast.CompilationUnitDeclaration;
-import net.sourceforge.phpeclipse.internal.compiler.ast.TypeDeclaration;
 
 public class Compiler implements ITypeRequestor, ProblemSeverities {
-       public UnitParser parser;
-       public ICompilerRequestor requestor;
-//     public CompilerOptions options;
-       public ProblemReporter problemReporter;
-
-       // management of unit to be processed
-       //public CompilationUnitResult currentCompilationUnitResult;
-       public CompilationUnitDeclaration[] unitsToProcess;
-       public int totalUnits; // (totalUnits-1) gives the last unit in unitToProcess
-
-       // name lookup
-       public LookupEnvironment lookupEnvironment;
-
-       // ONCE STABILIZED, THESE SHOULD RETURN TO A FINAL FIELD
-       public static boolean DEBUG = false;
-       public int parseThreshold = -1;
-       // number of initial units parsed at once (-1: none)
-
-       /*
-        * Static requestor reserved to listening compilation results in debug mode,
-        * so as for example to monitor compiler activity independantly from a particular
-        * builder implementation. It is reset at the end of compilation, and should not 
-        * persist any information after having been reset.
-        */
-//     public static IDebugRequestor DebugRequestor = null;
-
-       /**
-        * Answer a new compiler using the given name environment and compiler options.
-        * The environment and options will be in effect for the lifetime of the compiler.
-        * When the compiler is run, compilation results are sent to the given requestor.
-        *
-        *  @param environment org.eclipse.jdt.internal.compiler.api.env.INameEnvironment
-        *      Environment used by the compiler in order to resolve type and package
-        *      names. The name environment implements the actual connection of the compiler
-        *      to the outside world (e.g. in batch mode the name environment is performing
-        *      pure file accesses, reuse previous build state or connection to repositories).
-        *      Note: the name environment is responsible for implementing the actual classpath
-        *            rules.
-        *
-        *  @param policy org.eclipse.jdt.internal.compiler.api.problem.IErrorHandlingPolicy
-        *      Configurable part for problem handling, allowing the compiler client to
-        *      specify the rules for handling problems (stop on first error or accumulate
-        *      them all) and at the same time perform some actions such as opening a dialog
-        *      in UI when compiling interactively.
-        *      @see org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies
-        *      
-        *  @param requestor org.eclipse.jdt.internal.compiler.api.ICompilerRequestor
-        *      Component which will receive and persist all compilation results and is intended
-        *      to consume them as they are produced. Typically, in a batch compiler, it is 
-        *      responsible for writing out the actual .class files to the file system.
-        *      @see org.eclipse.jdt.internal.compiler.CompilationResult
-        *
-        *  @param problemFactory org.eclipse.jdt.internal.compiler.api.problem.IProblemFactory
-        *      Factory used inside the compiler to create problem descriptors. It allows the
-        *      compiler client to supply its own representation of compilation problems in
-        *      order to avoid object conversions. Note that the factory is not supposed
-        *      to accumulate the created problems, the compiler will gather them all and hand
-        *      them back as part of the compilation unit result.
-        */
-       public Compiler(
-               INameEnvironment environment,
-               IErrorHandlingPolicy policy,
-//             Map settings,
-               final ICompilerRequestor requestor,
-               IProblemFactory problemFactory) {
-
-               // create a problem handler given a handling policy
-//             this.options = new CompilerOptions(settings);
-               
-               // wrap requestor in DebugRequestor if one is specified
-//             if(DebugRequestor == null) {
-                       this.requestor = requestor;
-//             } else {
-//                     this.requestor = new ICompilerRequestor(){
-//                             public void acceptResult(CompilationResult result){
-//                                     if (DebugRequestor.isActive()){
-//                                             DebugRequestor.acceptDebugResult(result);
-//                                     }
-//                                     requestor.acceptResult(result);
-//                             }
-//                     };
-//             }
-               this.problemReporter =
-                       new ProblemReporter(policy, problemFactory);//this.options, problemFactory);
-               this.lookupEnvironment =
-                       new LookupEnvironment(this, problemReporter, environment); //options, problemReporter, environment);
-               this.parser =
-                       new UnitParser(
-                               problemReporter); 
-//                             this.options.parseLiteralExpressionsAsConstants, 
-//                             options.sourceLevel >= CompilerOptions.JDK1_4);
-       }
-       
-       /**
-        * Answer a new compiler using the given name environment and compiler options.
-        * The environment and options will be in effect for the lifetime of the compiler.
-        * When the compiler is run, compilation results are sent to the given requestor.
-        *
-        *  @param environment org.eclipse.jdt.internal.compiler.api.env.INameEnvironment
-        *      Environment used by the compiler in order to resolve type and package
-        *      names. The name environment implements the actual connection of the compiler
-        *      to the outside world (e.g. in batch mode the name environment is performing
-        *      pure file accesses, reuse previous build state or connection to repositories).
-        *      Note: the name environment is responsible for implementing the actual classpath
-        *            rules.
-        *
-        *  @param policy org.eclipse.jdt.internal.compiler.api.problem.IErrorHandlingPolicy
-        *      Configurable part for problem handling, allowing the compiler client to
-        *      specify the rules for handling problems (stop on first error or accumulate
-        *      them all) and at the same time perform some actions such as opening a dialog
-        *      in UI when compiling interactively.
-        *      @see org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies
-        *      
-        *  @param requestor org.eclipse.jdt.internal.compiler.api.ICompilerRequestor
-        *      Component which will receive and persist all compilation results and is intended
-        *      to consume them as they are produced. Typically, in a batch compiler, it is 
-        *      responsible for writing out the actual .class files to the file system.
-        *      @see org.eclipse.jdt.internal.compiler.CompilationResult
-        *
-        *  @param problemFactory org.eclipse.jdt.internal.compiler.api.problem.IProblemFactory
-        *      Factory used inside the compiler to create problem descriptors. It allows the
-        *      compiler client to supply its own representation of compilation problems in
-        *      order to avoid object conversions. Note that the factory is not supposed
-        *      to accumulate the created problems, the compiler will gather them all and hand
-        *      them back as part of the compilation unit result.
-        *      @param parseLiteralExpressionsAsConstants <code>boolean</code>
-        *              This parameter is used to optimize the literals or leave them as they are in the source.
-        *              If you put true, "Hello" + " world" will be converted to "Hello world".
-        */
-       public Compiler(
-               INameEnvironment environment,
-               IErrorHandlingPolicy policy,
-//             Map settings,
-               final ICompilerRequestor requestor,
-               IProblemFactory problemFactory,
-               boolean parseLiteralExpressionsAsConstants) {
-
-               // create a problem handler given a handling policy
-//             this.options = new CompilerOptions(settings);
-               
-               // wrap requestor in DebugRequestor if one is specified
-//             if(DebugRequestor == null) {
-                       this.requestor = requestor;
-//             } else {
-//                     this.requestor = new ICompilerRequestor(){
-//                             public void acceptResult(CompilationResult result){
-//                                     if (DebugRequestor.isActive()){
-//                                             DebugRequestor.acceptDebugResult(result);
-//                                     }
-//                                     requestor.acceptResult(result);
-//                             }
-//                     };
-//             }
-               this.problemReporter =
-                       new ProblemReporter(policy, problemFactory);//, this.options, problemFactory);
-               this.lookupEnvironment =
-                       new LookupEnvironment(this, problemReporter, environment);//options, problemReporter, environment);
-               this.parser =
-                       new UnitParser(
-                               problemReporter); 
-//                             parseLiteralExpressionsAsConstants,
-                               //                              this.options.sourceLevel >= CompilerOptions.JDK1_4);
-       }
-       
-       /**
-        * Add an additional binary type
-        */
-       public void accept(IBinaryType binaryType, PackageBinding packageBinding) {
-               lookupEnvironment.createBinaryTypeFrom(binaryType, packageBinding);
-       }
-
-       /**
-        * Add an additional compilation unit into the loop
-        *  ->  build compilation unit declarations, their bindings and record their results.
-        */
-       public void accept(ICompilationUnit sourceUnit) {
-               // Switch the current policy and compilation result for this unit to the requested one.
-               CompilationResult unitResult =
-                       new CompilationResult(sourceUnit, totalUnits, totalUnits, 10); //this.options.maxProblemsPerUnit);
-               try {
-                       // diet parsing for large collection of unit
-                       CompilationUnitDeclaration parsedUnit;
-                       if (totalUnits < parseThreshold) {
-                               parsedUnit = parser.parse(sourceUnit, unitResult);
-                       } else {
-                               parsedUnit = parser.dietParse(sourceUnit, unitResult);
-                       }
-
-//                     if (options.verbose) {
-//                             String count = String.valueOf(totalUnits + 1);
-//                             System.out.println(
-//                                     Util.bind(
-//                                             "compilation.request" , //$NON-NLS-1$
-//                                             new String[] {
-//                                                     count,
-//                                                     count,
-//                                                     new String(sourceUnit.getFileName())}));
-//                     }
-
-                       // initial type binding creation
-                       lookupEnvironment.buildTypeBindings(parsedUnit);
-                       this.addCompilationUnit(sourceUnit, parsedUnit);
-
-                       // binding resolution
-                       lookupEnvironment.completeTypeBindings(parsedUnit);
-               } catch (AbortCompilationUnit e) {
-                       // at this point, currentCompilationUnitResult may not be sourceUnit, but some other
-                       // one requested further along to resolve sourceUnit.
-                       if (unitResult.compilationUnit == sourceUnit) { // only report once
-                               requestor.acceptResult(unitResult.tagAsAccepted());
-                       } else {
-                               throw e; // want to abort enclosing request to compile
-                       }
-               }
-       }
-
-       /**
-        * Add additional source types
-        */
-       public void accept(ISourceType[] sourceTypes, PackageBinding packageBinding) {
-               problemReporter.abortDueToInternalError(
-                       Util.bind(
-                               "abort.againstSourceModel " , //$NON-NLS-1$
-                               String.valueOf(sourceTypes[0].getName()),
-                               String.valueOf(sourceTypes[0].getFileName())));
-       }
-
-       protected void addCompilationUnit(
-               ICompilationUnit sourceUnit,
-               CompilationUnitDeclaration parsedUnit) {
-
-               // append the unit to the list of ones to process later on
-               int size = unitsToProcess.length;
-               if (totalUnits == size)
-                       // when growing reposition units starting at position 0
-                       System.arraycopy(
-                               unitsToProcess,
-                               0,
-                               (unitsToProcess = new CompilationUnitDeclaration[size * 2]),
-                               0,
-                               totalUnits);
-               unitsToProcess[totalUnits++] = parsedUnit;
-       }
-
-       /**
-        * Add the initial set of compilation units into the loop
-        *  ->  build compilation unit declarations, their bindings and record their results.
-        */
-       protected void beginToCompile(ICompilationUnit[] sourceUnits) {
-               int maxUnits = sourceUnits.length;
-               totalUnits = 0;
-               unitsToProcess = new CompilationUnitDeclaration[maxUnits];
-
-               // Switch the current policy and compilation result for this unit to the requested one.
-               for (int i = 0; i < maxUnits; i++) {
-                       CompilationUnitDeclaration parsedUnit;
-                       CompilationResult unitResult =
-                               new CompilationResult(sourceUnits[i], i, maxUnits, 10);//, this.options.maxProblemsPerUnit);
-                       try {
-                               // diet parsing for large collection of units
-                               if (totalUnits < parseThreshold) {
-                                       parsedUnit = parser.parse(sourceUnits[i], unitResult);
-                               } else {
-                                       parsedUnit = parser.dietParse(sourceUnits[i], unitResult);
-                               }
-//                             if (options.verbose) {
-//                                     System.out.println(
-//                                             Util.bind(
-//                                                     "compilation.request" , //$NON-NLS-1$
-//                                                     new String[] {
-//                                                             String.valueOf(i + 1),
-//                                                             String.valueOf(maxUnits),
-//                                                             new String(sourceUnits[i].getFileName())}));
-//                             }
-                               // initial type binding creation
-                               lookupEnvironment.buildTypeBindings(parsedUnit);
-                               this.addCompilationUnit(sourceUnits[i], parsedUnit);
-                               //} catch (AbortCompilationUnit e) {
-                               //      requestor.acceptResult(unitResult.tagAsAccepted());
-                       } finally {
-                               sourceUnits[i] = null; // no longer hold onto the unit
-                       }
-               }
-               // binding resolution
-               lookupEnvironment.completeTypeBindings();
-       }
-
-       /**
-        * General API
-        * -> compile each of supplied files
-        * -> recompile any required types for which we have an incomplete principle structure
-        */
-       public void compile(ICompilationUnit[] sourceUnits) {
-               CompilationUnitDeclaration unit = null;
-               int i = 0;
-               try {
-                       // build and record parsed units
-
-                       beginToCompile(sourceUnits);
-
-                       // process all units (some more could be injected in the loop by the lookup environment)
-                       for (; i < totalUnits; i++) {
-                               unit = unitsToProcess[i];
-                               try {
-//                                     if (options.verbose)
-//                                             System.out.println(
-//                                                     Util.bind(
-//                                                             "compilation.process" , //$NON-NLS-1$
-//                                                             new String[] {
-//                                                                     String.valueOf(i + 1),
-//                                                                     String.valueOf(totalUnits),
-//                                                                     new String(unitsToProcess[i].getFileName())}));
-                                       process(unit, i);
-                               } finally {
-                                       // cleanup compilation unit result
-                                       unit.cleanUp();
-//                                     if (options.verbose)
-//                                             System.out.println(Util.bind("compilation.done", //$NON-NLS-1$
-//                                     new String[] {
-//                                             String.valueOf(i + 1),
-//                                             String.valueOf(totalUnits),
-//                                             new String(unitsToProcess[i].getFileName())}));
-                               }
-                               unitsToProcess[i] = null; // release reference to processed unit declaration
-                               requestor.acceptResult(unit.compilationResult.tagAsAccepted());
-                       }
-               } catch (AbortCompilation e) {
-                       this.handleInternalException(e, unit);
-               } catch (Error e) {
-                       this.handleInternalException(e, unit, null);
-                       throw e; // rethrow
-               } catch (RuntimeException e) {
-                       this.handleInternalException(e, unit, null);
-                       throw e; // rethrow
-               } finally {
-                       this.reset();
-               }
-//             if (options.verbose) {
-//                     if (totalUnits > 1) {
-//                             System.out.println(
-//                                     Util.bind("compilation.units" , String.valueOf(totalUnits))); //$NON-NLS-1$
-//                     } else {
-//                             System.out.println(
-//                                     Util.bind("compilation.unit" , String.valueOf(totalUnits))); //$NON-NLS-1$
-//                     }
-//             }
-       }
-
-       protected void getMethodBodies(CompilationUnitDeclaration unit, int place) {
-               //fill the methods bodies in order for the code to be generated
-
-               if (unit.ignoreMethodBodies) {
-                       unit.ignoreFurtherInvestigation = true;
-                       return;
-                       // if initial diet parse did not work, no need to dig into method bodies.
-               }
-
-               if (place < parseThreshold)
-                       return; //work already done ...
-
-               //real parse of the method....
-               parser.scanner.setSource(
-                       unit.compilationResult.compilationUnit.getContents());
-               if (unit.types != null) {
-                       for (int i = unit.types.size(); --i >= 0;)
-                         if (unit.types.get(i) instanceof TypeDeclaration) {
-                                 ((TypeDeclaration)unit.types.get(i)).parseMethod(parser, unit);
-                         }
-               }
-       }
-
-       /*
-        * Compiler crash recovery in case of unexpected runtime exceptions
-        */
-       protected void handleInternalException(
-               Throwable internalException,
-               CompilationUnitDeclaration unit,
-               CompilationResult result) {
-
-               /* dump a stack trace to the console */
-               internalException.printStackTrace();
-
-               /* find a compilation result */
-               if ((unit != null)) // basing result upon the current unit if available
-                       result = unit.compilationResult; // current unit being processed ?
-               if ((result == null) && (unitsToProcess != null) && (totalUnits > 0))
-                       result = unitsToProcess[totalUnits - 1].compilationResult;
-               // last unit in beginToCompile ?
-
-               if (result != null) {
-                       /* create and record a compilation problem */
-                       StringWriter stringWriter = new StringWriter();
-                       PrintWriter writer = new PrintWriter(stringWriter);
-                       internalException.printStackTrace(writer);
-                       StringBuffer buffer = stringWriter.getBuffer();
-
-                       String[] pbArguments = new String[] {
-                               Util.bind("compilation.internalError" ) //$NON-NLS-1$
-                                       + "\n"  //$NON-NLS-1$
-                                       + buffer.toString()};
-
-                       result
-                               .record(
-                                       problemReporter
-                                       .createProblem(
-                                               result.getFileName(),
-                                               IProblem.Unclassified,
-                                               pbArguments,
-                                               pbArguments,
-                                               Error, // severity
-                                               0, // source start
-                                               0, // source end
-                                               0, // line number               
-                                               unit,
-                                               result),
-                                       unit);
-
-                       /* hand back the compilation result */
-                       if (!result.hasBeenAccepted) {
-                               requestor.acceptResult(result.tagAsAccepted());
-                       }
-               }
-       }
-
-       /*
-        * Compiler recovery in case of internal AbortCompilation event
-        */
-       protected void handleInternalException(
-               AbortCompilation abortException,
-               CompilationUnitDeclaration unit) {
-
-               /* special treatment for SilentAbort: silently cancelling the compilation process */
-               if (abortException.isSilent) {
-                       if (abortException.silentException == null) {
-                               return;
-                       } else {
-                               throw abortException.silentException;
-                       }
-               }
-
-               /* uncomment following line to see where the abort came from */
-               // abortException.printStackTrace(); 
-
-               // Exception may tell which compilation result it is related, and which problem caused it
-               CompilationResult result = abortException.compilationResult;
-               if ((result == null) && (unit != null))
-                       result = unit.compilationResult; // current unit being processed ?
-               if ((result == null) && (unitsToProcess != null) && (totalUnits > 0))
-                       result = unitsToProcess[totalUnits - 1].compilationResult;
-               // last unit in beginToCompile ?
-               if (result != null && !result.hasBeenAccepted) {
-                       /* distant problem which could not be reported back there */
-                       if (abortException.problemId != 0) {
-                               result
-                                       .record(
-                                               problemReporter
-                                               .createProblem(
-                                                       result.getFileName(),
-                                                       abortException.problemId,
-                                                       abortException.problemArguments,
-                                                       abortException.messageArguments,
-                                                       Error, // severity
-                                                       0, // source start
-                                                       0, // source end
-                                                       0, // line number               
-                                                       unit,
-                                                       result),
-                                               unit);                          
-                       } else {
-                               /* distant internal exception which could not be reported back there */
-                               if (abortException.exception != null) {
-                                       this.handleInternalException(abortException.exception, null, result);
-                                       return;
-                               }
-                       }
-                       /* hand back the compilation result */
-                       if (!result.hasBeenAccepted) {
-                               requestor.acceptResult(result.tagAsAccepted());
-                       }
-               } else {
-                       /*
-                       if (abortException.problemId != 0){ 
-                               IProblem problem =
-                                       problemReporter.createProblem(
-                                               "???".toCharArray(),
-                                               abortException.problemId, 
-                                               abortException.problemArguments, 
-                                               Error, // severity
-                                               0, // source start
-                                               0, // source end
-                                               0); // line number
-                               System.out.println(problem.getMessage());
-                       }
-                       */
-                       abortException.printStackTrace();
-               }
-       }
-
-       /**
-        * Process a compilation unit already parsed and build.
-        */
-       public void process(CompilationUnitDeclaration unit, int i) {
-
-               getMethodBodies(unit, i);
-
-               // fault in fields & methods
-               if (unit.scope != null)
-                       unit.scope.faultInTypes();
-
-               // verify inherited methods
-               if (unit.scope != null)
-                       unit.scope.verifyMethods(lookupEnvironment.methodVerifier());
-
-               // type checking
-               unit.resolve();
-
-               // flow analysis
-               unit.analyseCode();
-
-               // code generation
-//             unit.generateCode();
-
-               // reference info
-//             if (options.produceReferenceInfo && unit.scope != null)
-//                     unit.scope.storeDependencyInfo();
-
-               // refresh the total number of units known at this stage
-               unit.compilationResult.totalUnitsKnown = totalUnits;
-       }
-       public void reset() {
-               lookupEnvironment.reset();
-               parser.scanner.source = null;
-               unitsToProcess = null;
-//             if (DebugRequestor != null) DebugRequestor.reset();
-       }
-
-       /**
+  public UnitParser parser;
+  public ICompilerRequestor requestor;
+  public CompilerOptions options;
+  public ProblemReporter problemReporter;
+  // management of unit to be processed
+  //public CompilationUnitResult currentCompilationUnitResult;
+  public CompilationUnitDeclaration[] unitsToProcess;
+  public int totalUnits; // (totalUnits-1) gives the last unit in unitToProcess
+  // name lookup
+  public LookupEnvironment lookupEnvironment;
+  // ONCE STABILIZED, THESE SHOULD RETURN TO A FINAL FIELD
+  public static boolean DEBUG = false;
+  public int parseThreshold = -1;
+  // number of initial units parsed at once (-1: none)
+  /*
+   * Static requestor reserved to listening compilation results in debug mode,
+   * so as for example to monitor compiler activity independantly from a
+   * particular builder implementation. It is reset at the end of compilation,
+   * and should not persist any information after having been reset.
+   */
+  //   public static IDebugRequestor DebugRequestor = null;
+  /**
+   * Answer a new compiler using the given name environment and compiler
+   * options. The environment and options will be in effect for the lifetime of
+   * the compiler. When the compiler is run, compilation results are sent to
+   * the given requestor.
+   * 
+   * @param environment
+   *            org.eclipse.jdt.internal.compiler.api.env.INameEnvironment
+   *            Environment used by the compiler in order to resolve type and
+   *            package names. The name environment implements the actual
+   *            connection of the compiler to the outside world (e.g. in batch
+   *            mode the name environment is performing pure file accesses,
+   *            reuse previous build state or connection to repositories).
+   *            Note: the name environment is responsible for implementing the
+   *            actual classpath rules.
+   * 
+   * @param policy
+   *            org.eclipse.jdt.internal.compiler.api.problem.IErrorHandlingPolicy
+   *            Configurable part for problem handling, allowing the compiler
+   *            client to specify the rules for handling problems (stop on
+   *            first error or accumulate them all) and at the same time
+   *            perform some actions such as opening a dialog in UI when
+   *            compiling interactively.
+   * @see org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies
+   * 
+   * @param requestor
+   *            org.eclipse.jdt.internal.compiler.api.ICompilerRequestor
+   *            Component which will receive and persist all compilation
+   *            results and is intended to consume them as they are produced.
+   *            Typically, in a batch compiler, it is responsible for writing
+   *            out the actual .class files to the file system.
+   * @see org.eclipse.jdt.internal.compiler.CompilationResult
+   * 
+   * @param problemFactory
+   *            org.eclipse.jdt.internal.compiler.api.problem.IProblemFactory
+   *            Factory used inside the compiler to create problem descriptors.
+   *            It allows the compiler client to supply its own representation
+   *            of compilation problems in order to avoid object conversions.
+   *            Note that the factory is not supposed to accumulate the created
+   *            problems, the compiler will gather them all and hand them back
+   *            as part of the compilation unit result.
+   */
+  public Compiler(INameEnvironment environment, IErrorHandlingPolicy policy,
+      Map settings, final ICompilerRequestor requestor,
+      IProblemFactory problemFactory) {
+    // create a problem handler given a handling policy
+    this.options = new CompilerOptions(settings);
+    // wrap requestor in DebugRequestor if one is specified
+    //         if(DebugRequestor == null) {
+    this.requestor = requestor;
+    //         } else {
+    //                 this.requestor = new ICompilerRequestor(){
+    //                         public void acceptResult(CompilationResult result){
+    //                                 if (DebugRequestor.isActive()){
+    //                                         DebugRequestor.acceptDebugResult(result);
+    //                                 }
+    //                                 requestor.acceptResult(result);
+    //                         }
+    //                 };
+    //         }
+    this.problemReporter = new ProblemReporter(policy, this.options,
+        problemFactory);
+    this.lookupEnvironment = new LookupEnvironment(this, problemReporter,
+        environment); //options, problemReporter, environment);
+    this.parser = new UnitParser(problemReporter);
+    //                         this.options.parseLiteralExpressionsAsConstants,
+    //                         options.sourceLevel >= CompilerOptions.JDK1_4);
+  }
+  /**
+   * Answer a new compiler using the given name environment and compiler
+   * options. The environment and options will be in effect for the lifetime of
+   * the compiler. When the compiler is run, compilation results are sent to
+   * the given requestor.
+   * 
+   * @param environment
+   *            org.eclipse.jdt.internal.compiler.api.env.INameEnvironment
+   *            Environment used by the compiler in order to resolve type and
+   *            package names. The name environment implements the actual
+   *            connection of the compiler to the outside world (e.g. in batch
+   *            mode the name environment is performing pure file accesses,
+   *            reuse previous build state or connection to repositories).
+   *            Note: the name environment is responsible for implementing the
+   *            actual classpath rules.
+   * 
+   * @param policy
+   *            org.eclipse.jdt.internal.compiler.api.problem.IErrorHandlingPolicy
+   *            Configurable part for problem handling, allowing the compiler
+   *            client to specify the rules for handling problems (stop on
+   *            first error or accumulate them all) and at the same time
+   *            perform some actions such as opening a dialog in UI when
+   *            compiling interactively.
+   * @see org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies
+   * 
+   * @param requestor
+   *            org.eclipse.jdt.internal.compiler.api.ICompilerRequestor
+   *            Component which will receive and persist all compilation
+   *            results and is intended to consume them as they are produced.
+   *            Typically, in a batch compiler, it is responsible for writing
+   *            out the actual .class files to the file system.
+   * @see org.eclipse.jdt.internal.compiler.CompilationResult
+   * 
+   * @param problemFactory
+   *            org.eclipse.jdt.internal.compiler.api.problem.IProblemFactory
+   *            Factory used inside the compiler to create problem descriptors.
+   *            It allows the compiler client to supply its own representation
+   *            of compilation problems in order to avoid object conversions.
+   *            Note that the factory is not supposed to accumulate the created
+   *            problems, the compiler will gather them all and hand them back
+   *            as part of the compilation unit result.
+   * @param parseLiteralExpressionsAsConstants
+   *            <code>boolean</code> This parameter is used to optimize the
+   *            literals or leave them as they are in the source. If you put
+   *            true, "Hello" . " world" will be converted to "Hello world".
+   */
+  public Compiler(INameEnvironment environment, IErrorHandlingPolicy policy,
+      Map settings, final ICompilerRequestor requestor,
+      IProblemFactory problemFactory, boolean parseLiteralExpressionsAsConstants) {
+    // create a problem handler given a handling policy
+    this.options = new CompilerOptions(settings);
+    // wrap requestor in DebugRequestor if one is specified
+    //         if(DebugRequestor == null) {
+    this.requestor = requestor;
+    //         } else {
+    //                 this.requestor = new ICompilerRequestor(){
+    //                         public void acceptResult(CompilationResult result){
+    //                                 if (DebugRequestor.isActive()){
+    //                                         DebugRequestor.acceptDebugResult(result);
+    //                                 }
+    //                                 requestor.acceptResult(result);
+    //                         }
+    //                 };
+    //         }
+    this.problemReporter = new ProblemReporter(policy, this.options,
+        problemFactory);
+    this.lookupEnvironment = new LookupEnvironment(this, problemReporter,
+        environment);//options, problemReporter, environment);
+    this.parser = new UnitParser(problemReporter);
+    //                         parseLiteralExpressionsAsConstants,
+    //                         this.options.sourceLevel >= CompilerOptions.JDK1_4);
+  }
+  /**
+   * Add an additional binary type
+   */
+  public void accept(IBinaryType binaryType, PackageBinding packageBinding) {
+    lookupEnvironment.createBinaryTypeFrom(binaryType, packageBinding);
+  }
+  /**
+   * Add an additional compilation unit into the loop -> build compilation unit
+   * declarations, their bindings and record their results.
+   */
+  public void accept(ICompilationUnit sourceUnit) {
+    // Switch the current policy and compilation result for this unit to the
+    // requested one.
+    CompilationResult unitResult = new CompilationResult(sourceUnit,
+        totalUnits, totalUnits, this.options.maxProblemsPerUnit);
+    try {
+      // diet parsing for large collection of unit
+      CompilationUnitDeclaration parsedUnit;
+      if (totalUnits < parseThreshold) {
+        parsedUnit = parser.parse(sourceUnit, unitResult, false);
+      } else {
+        parsedUnit = parser.dietParse(sourceUnit, unitResult);
+      }
+      if (options.verbose) {
+        String count = String.valueOf(totalUnits + 1);
+        System.out.println(Util.bind("compilation.request", //$NON-NLS-1$
+            new String[]{count, count, new String(sourceUnit.getFileName())}));
+      }
+      // initial type binding creation
+      lookupEnvironment.buildTypeBindings(parsedUnit);
+      this.addCompilationUnit(sourceUnit, parsedUnit);
+      // binding resolution
+      lookupEnvironment.completeTypeBindings(parsedUnit);
+    } catch (AbortCompilationUnit e) {
+      // at this point, currentCompilationUnitResult may not be sourceUnit, but
+      // some other
+      // one requested further along to resolve sourceUnit.
+      if (unitResult.compilationUnit == sourceUnit) { // only report once
+        requestor.acceptResult(unitResult.tagAsAccepted());
+      } else {
+        throw e; // want to abort enclosing request to compile
+      }
+    }
+  }
+  /**
+   * Add additional source types
+   */
+  public void accept(ISourceType[] sourceTypes, PackageBinding packageBinding) {
+    problemReporter.abortDueToInternalError(Util.bind(
+        "abort.againstSourceModel ", //$NON-NLS-1$
+        String.valueOf(sourceTypes[0].getName()), String.valueOf(sourceTypes[0]
+            .getFileName())));
+  }
+  protected void addCompilationUnit(ICompilationUnit sourceUnit,
+      CompilationUnitDeclaration parsedUnit) {
+    // append the unit to the list of ones to process later on
+    int size = unitsToProcess.length;
+    if (totalUnits == size)
+      // when growing reposition units starting at position 0
+      System.arraycopy(unitsToProcess, 0,
+          (unitsToProcess = new CompilationUnitDeclaration[size * 2]), 0,
+          totalUnits);
+    unitsToProcess[totalUnits++] = parsedUnit;
+  }
+  /**
+   * Add the initial set of compilation units into the loop -> build
+   * compilation unit declarations, their bindings and record their results.
+   */
+  protected void beginToCompile(ICompilationUnit[] sourceUnits) {
+    int maxUnits = sourceUnits.length;
+    totalUnits = 0;
+    unitsToProcess = new CompilationUnitDeclaration[maxUnits];
+    // Switch the current policy and compilation result for this unit to the
+    // requested one.
+    for (int i = 0; i < maxUnits; i++) {
+      CompilationUnitDeclaration parsedUnit;
+      CompilationResult unitResult = new CompilationResult(sourceUnits[i], i,
+          maxUnits, this.options.maxProblemsPerUnit);
+      try {
+        // diet parsing for large collection of units
+        if (totalUnits < parseThreshold) {
+          parsedUnit = parser.parse(sourceUnits[i], unitResult, false);
+        } else {
+          parsedUnit = parser.dietParse(sourceUnits[i], unitResult);
+        }
+        if (options.verbose) {
+          System.out.println(Util.bind("compilation.request", //$NON-NLS-1$
+              new String[]{String.valueOf(i + 1), String.valueOf(maxUnits),
+                  new String(sourceUnits[i].getFileName())}));
+        }
+        // initial type binding creation
+        //        lookupEnvironment.buildTypeBindings(parsedUnit);
+        this.addCompilationUnit(sourceUnits[i], parsedUnit);
+        //} catch (AbortCompilationUnit e) {
+        //requestor.acceptResult(unitResult.tagAsAccepted());
+      } finally {
+        sourceUnits[i] = null; // no longer hold onto the unit
+      }
+    }
+    // binding resolution
+    lookupEnvironment.completeTypeBindings();
+  }
+  /**
+   * General API -> compile each of supplied files -> recompile any required
+   * types for which we have an incomplete principle structure
+   */
+  public void compile(ICompilationUnit[] sourceUnits) {
+    CompilationUnitDeclaration unit = null;
+    int i = 0;
+    try {
+      // build and record parsed units
+      beginToCompile(sourceUnits);
+      // process all units (some more could be injected in the loop by the
+      // lookup environment)
+      for (; i < totalUnits; i++) {
+        unit = unitsToProcess[i];
+        try {
+          if (options.verbose)
+            System.out.println(Util.bind("compilation.process", //$NON-NLS-1$
+                new String[]{String.valueOf(i + 1), String.valueOf(totalUnits),
+                    new String(unitsToProcess[i].getFileName())}));
+          process(unit, i);
+        } finally {
+          // cleanup compilation unit result
+          unit.cleanUp();
+          if (options.verbose)
+            System.out.println(Util.bind("compilation.done", //$NON-NLS-1$
+                new String[]{String.valueOf(i + 1), String.valueOf(totalUnits),
+                    new String(unitsToProcess[i].getFileName())}));
+        }
+        unitsToProcess[i] = null; // release reference to processed unit
+        // declaration
+        requestor.acceptResult(unit.compilationResult.tagAsAccepted());
+      }
+    } catch (AbortCompilation e) { 
+      this.handleInternalException(e, unit);
+    } catch (Error e) {
+      this.handleInternalException(e, unit, null);
+      throw e; // rethrow
+    } catch (RuntimeException e) {
+      this.handleInternalException(e, unit, null);
+      throw e; // rethrow
+    } finally {
+      this.reset();
+    }
+    //         if (options.verbose) {
+    //                 if (totalUnits > 1) {
+    //                         System.out.println(
+    //                                 ProjectPrefUtil.bind("compilation.units" , String.valueOf(totalUnits)));
+    // //$NON-NLS-1$
+    //                 } else {
+    //                         System.out.println(
+    //                                 ProjectPrefUtil.bind("compilation.unit" , String.valueOf(totalUnits)));
+    // //$NON-NLS-1$
+    //                 }
+    //         }
+  }
+  protected void getMethodBodies(CompilationUnitDeclaration unit, int place) {
+    //fill the methods bodies in order for the code to be generated
+    if (unit.ignoreMethodBodies) {
+      unit.ignoreFurtherInvestigation = true;
+      return;
+      // if initial diet parse did not work, no need to dig into method bodies.
+    }
+    if (place < parseThreshold)
+      return; //work already done ...
+    //real parse of the method....
+    parser.scanner.setSource(unit.compilationResult.compilationUnit
+        .getContents());
+    if (unit.types != null) {
+      for (int i = unit.types.size(); --i >= 0;)
+        if (unit.types.get(i) instanceof TypeDeclaration) {
+          ((TypeDeclaration) unit.types.get(i)).parseMethod(parser, unit);
+        }
+    }
+  }
+  /*
+   * Compiler crash recovery in case of unexpected runtime exceptions
+   */
+  protected void handleInternalException(Throwable internalException,
+      CompilationUnitDeclaration unit, CompilationResult result) {
+    /* dump a stack trace to the console */
+    internalException.printStackTrace();
+    /* find a compilation result */
+    if ((unit != null)) // basing result upon the current unit if available
+      result = unit.compilationResult; // current unit being processed ?
+    if ((result == null) && (unitsToProcess != null) && (totalUnits > 0))
+      result = unitsToProcess[totalUnits - 1].compilationResult;
+    // last unit in beginToCompile ?
+    if (result != null) {
+      /* create and record a compilation problem */
+      StringWriter stringWriter = new StringWriter();
+      PrintWriter writer = new PrintWriter(stringWriter);
+      internalException.printStackTrace(writer);
+      StringBuffer buffer = stringWriter.getBuffer();
+      String[] pbArguments = new String[]{Util
+          .bind("compilation.internalError")
+          //$NON-NLS-1$
+          + "\n" //$NON-NLS-1$
+          + buffer.toString()};
+      result.record(problemReporter.createProblem(result.getFileName(),
+          IProblem.Unclassified, pbArguments, pbArguments, Error, // severity
+          0, // source start
+          0, // source end
+          0, // line number
+          unit, result), unit);
+      /* hand back the compilation result */
+      if (!result.hasBeenAccepted) {
+        requestor.acceptResult(result.tagAsAccepted());
+      }
+    }
+  }
+  /*
+   * Compiler recovery in case of internal AbortCompilation event
+   */
+  protected void handleInternalException(AbortCompilation abortException,
+      CompilationUnitDeclaration unit) {
+    /*
+     * special treatment for SilentAbort: silently cancelling the compilation
+     * process
+     */
+    if (abortException.isSilent) {
+      if (abortException.silentException == null) {
+        return;
+      } else {
+        throw abortException.silentException;
+      }
+    }
+    /* uncomment following line to see where the abort came from */
+    // abortException.printStackTrace();
+    // Exception may tell which compilation result it is related, and which
+    // problem caused it
+    CompilationResult result = abortException.compilationResult;
+    if ((result == null) && (unit != null))
+      result = unit.compilationResult; // current unit being processed ?
+    if ((result == null) && (unitsToProcess != null) && (totalUnits > 0))
+      result = unitsToProcess[totalUnits - 1].compilationResult;
+    // last unit in beginToCompile ?
+    if (result != null && !result.hasBeenAccepted) {
+      /* distant problem which could not be reported back there */
+      if (abortException.problemId != 0) {
+        result.record(problemReporter.createProblem(result.getFileName(),
+            abortException.problemId, abortException.problemArguments,
+            abortException.messageArguments, Error, // severity
+            0, // source start
+            0, // source end
+            0, // line number
+            unit, result), unit);
+      } else {
+        /* distant internal exception which could not be reported back there */
+        if (abortException.exception != null) {
+          this.handleInternalException(abortException.exception, null, result);
+          return;
+        }
+      }
+      /* hand back the compilation result */
+      if (!result.hasBeenAccepted) {
+        requestor.acceptResult(result.tagAsAccepted());
+      }
+    } else {
+      /*
+       * if (abortException.problemId != 0){ IProblem problem =
+       * problemReporter.createProblem( "???".toCharArray(),
+       * abortException.problemId, abortException.problemArguments, Error, //
+       * severity 0, // source start 0, // source end 0); // line number
+       * System.out.println(problem.getMessage()); }
+       */
+      abortException.printStackTrace();
+    }
+  }
+  /**
+   * Process a compilation unit already parsed and build.
+   */
+  public void process(CompilationUnitDeclaration unit, int i) {
+    getMethodBodies(unit, i);
+    // fault in fields & methods
+    if (unit.scope != null)
+      unit.scope.faultInTypes();
+    // verify inherited methods
+    //    if (unit.scope != null)
+    //      unit.scope.verifyMethods(lookupEnvironment.methodVerifier());
+    // type checking
+    unit.resolve();
+    // flow analysis
+    unit.analyseCode();
+    // code generation
+    //         unit.generateCode();
+    // reference info
+    //         if (options.produceReferenceInfo && unit.scope != null)
+    //                 unit.scope.storeDependencyInfo();
+    // refresh the total number of units known at this stage
+    unit.compilationResult.totalUnitsKnown = totalUnits;
+  }
+  public void reset() {
+    lookupEnvironment.reset();
+    parser.scanner.source = null;
+    unitsToProcess = null;
+    //         if (DebugRequestor != null) DebugRequestor.reset();
+  }
+  /**
         * Internal API used to resolve a given compilation unit. Can run a subset of the compilation process
         */
        public CompilationUnitDeclaration resolve(
+                       CompilationUnitDeclaration unit, 
                        ICompilationUnit sourceUnit, 
                        boolean verifyMethods,
                        boolean analyzeCode) {
-//                     boolean generateCode) {
                                
-               CompilationUnitDeclaration unit = null;
                try {
-                       // build and record parsed units
-                       parseThreshold = 0; // will request a full parse
-                       beginToCompile(new ICompilationUnit[] { sourceUnit });
-                       // process all units (some more could be injected in the loop by the lookup environment)
-                       unit = unitsToProcess[0];
+                       if (unit == null) {
+                               // build and record parsed units
+                               parseThreshold = 0; // will request a full parse
+                               beginToCompile(new ICompilationUnit[] { sourceUnit });
+                               // process all units (some more could be injected in the loop by the lookup environment)
+                               unit = unitsToProcess[0];
+                       } else {
+                               // initial type binding creation
+                               lookupEnvironment.buildTypeBindings(unit);
+
+                               // binding resolution
+                               lookupEnvironment.completeTypeBindings();
+                       }
+                       // TODO : jsurfer check this
+//                     this.parser.getMethodBodies(unit);
                        getMethodBodies(unit, 0);
+                       
                        if (unit.scope != null) {
-//                             // fault in fields & methods
-//                             unit.scope.faultInTypes();
-                               
-//                             if (unit.scope != null && verifyMethods) {
-//                                     // http://dev.eclipse.org/bugs/show_bug.cgi?id=23117
-//                                     // verify inherited methods
-//                                     unit.scope.verifyMethods(lookupEnvironment.methodVerifier());
-//                             }
-//                             // type checking
-//                             unit.resolve();         
+                               // fault in fields & methods
+                               unit.scope.faultInTypes();
+                               if (unit.scope != null && verifyMethods) {
+                                       // http://dev.eclipse.org/bugs/show_bug.cgi?id=23117
+                                       // verify inherited methods
+                                       unit.scope.verifyMethods(lookupEnvironment.methodVerifier());
+                               }
+                               // type checking
+                               unit.resolve();         
 
                                // flow analysis
 //                             if (analyzeCode) unit.analyseCode();
@@ -603,7 +536,7 @@ public class Compiler implements ITypeRequestor, ProblemSeverities {
                                // code generation
 //                             if (generateCode) unit.generateCode();
                        }
-                       unitsToProcess[0] = null; // release reference to processed unit declaration
+                       if (unitsToProcess != null) unitsToProcess[0] = null; // release reference to processed unit declaration
                        requestor.acceptResult(unit.compilationResult.tagAsAccepted());
                        return unit;
                } catch (AbortCompilation e) {
@@ -625,4 +558,59 @@ public class Compiler implements ITypeRequestor, ProblemSeverities {
                        // this.reset();
                }
        }
-}
+  /**
+   * Internal API used to resolve a given compilation unit. Can run a subset of
+   * the compilation process
+   */
+  public CompilationUnitDeclaration resolve(ICompilationUnit sourceUnit,
+      boolean verifyMethods, boolean analyzeCode) {
+    //                 boolean generateCode) {
+    CompilationUnitDeclaration unit = null;
+    try {
+      // build and record parsed units
+      parseThreshold = 0; // will request a full parse
+      beginToCompile(new ICompilationUnit[]{sourceUnit});
+      // process all units (some more could be injected in the loop by the
+      // lookup environment)
+      unit = unitsToProcess[0];
+      getMethodBodies(unit, 0);
+      if (unit.scope != null) {
+        //                             // fault in fields & methods
+        //                             unit.scope.faultInTypes();
+        //                             if (unit.scope != null && verifyMethods) {
+        //                                     // http://dev.eclipse.org/bugs/show_bug.cgi?id=23117
+        //                                     // verify inherited methods
+        //                                     unit.scope.verifyMethods(lookupEnvironment.methodVerifier());
+        //                             }
+        //                             // type checking
+        //                             unit.resolve();
+        // flow analysis
+        //                             if (analyzeCode) unit.analyseCode();
+        // code generation
+        //                             if (generateCode) unit.generateCode();
+      }
+      unitsToProcess[0] = null; // release reference to processed unit
+      // declaration
+      requestor.acceptResult(unit.compilationResult.tagAsAccepted());
+      return unit;
+    } catch (AbortCompilation e) {
+      this.handleInternalException(e, unit);
+      return unit == null ? unitsToProcess[0] : unit;
+    } catch (Error e) {
+      this.handleInternalException(e, unit, null);
+      throw e; // rethrow
+    } catch (RuntimeException e) {
+      this.handleInternalException(e, unit, null);
+      throw e; // rethrow
+    } finally {
+      // No reset is performed there anymore since,
+      // within the CodeAssist (or related tools),
+      // the compiler may be called *after* a call
+      // to this resolve(...) method. And such a call
+      // needs to have a compiler with a non-empty
+      // environment.
+      // this.reset();
+    }
+  }
+
+}
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