public TypeReference getTypeReference(int dim) {
   /* build a Reference on a variable that may be qualified or not
    * This variable is a type reference and dim will be its dimensions
    */
   Annotation[][] annotationsOnDimensions = null;
   TypeReference ref;
   int length = this.identifierLengthStack[this.identifierLengthPtr--];
   if (length < 0) { // flag for precompiled type reference on base types
     annotationsOnDimensions = getAnnotationsOnDimensions(dim);
     ref = TypeReference.baseTypeReference(-length, dim, annotationsOnDimensions);
     ref.sourceStart = this.intStack[this.intPtr--];
     if (dim == 0) {
       ref.sourceEnd = this.intStack[this.intPtr--];
     } else {
       this.intPtr--; // no need to use this position as it is an array
       ref.sourceEnd = this.rBracketPosition;
     }
     if (this.reportReferenceInfo) {
       this.requestor.acceptTypeReference(
           ref.getParameterizedTypeName(), ref.sourceStart, ref.sourceEnd);
     }
   } else {
     int numberOfIdentifiers =
         this.genericsIdentifiersLengthStack[this.genericsIdentifiersLengthPtr--];
     if (length != numberOfIdentifiers || this.genericsLengthStack[this.genericsLengthPtr] != 0) {
       // generic type
       ref = getTypeReferenceForGenericType(dim, length, numberOfIdentifiers);
       if (this.reportReferenceInfo) {
         if (length == 1 && numberOfIdentifiers == 1) {
           ParameterizedSingleTypeReference parameterizedSingleTypeReference =
               (ParameterizedSingleTypeReference) ref;
           this.requestor.acceptTypeReference(
               parameterizedSingleTypeReference.token,
               parameterizedSingleTypeReference.sourceStart);
         } else {
           ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference =
               (ParameterizedQualifiedTypeReference) ref;
           this.requestor.acceptTypeReference(
               parameterizedQualifiedTypeReference.tokens,
               parameterizedQualifiedTypeReference.sourceStart,
               parameterizedQualifiedTypeReference.sourceEnd);
         }
       }
     } else if (length == 1) {
       // single type reference
       this.genericsLengthPtr--; // pop the 0
       if (dim == 0) {
         ref =
             new SingleTypeReference(
                 this.identifierStack[this.identifierPtr],
                 this.identifierPositionStack[this.identifierPtr--]);
         if (this.reportReferenceInfo) {
           this.requestor.acceptTypeReference(((SingleTypeReference) ref).token, ref.sourceStart);
         }
       } else {
         annotationsOnDimensions = getAnnotationsOnDimensions(dim);
         ref =
             new ArrayTypeReference(
                 this.identifierStack[this.identifierPtr],
                 dim,
                 annotationsOnDimensions,
                 this.identifierPositionStack[this.identifierPtr--]);
         ref.sourceEnd = this.endPosition;
         if (annotationsOnDimensions != null) {
           ref.bits |= ASTNode.HasTypeAnnotations;
         }
         if (this.reportReferenceInfo) {
           this.requestor.acceptTypeReference(((ArrayTypeReference) ref).token, ref.sourceStart);
         }
       }
     } else { // Qualified type reference
       this.genericsLengthPtr--;
       char[][] tokens = new char[length][];
       this.identifierPtr -= length;
       long[] positions = new long[length];
       System.arraycopy(this.identifierStack, this.identifierPtr + 1, tokens, 0, length);
       System.arraycopy(
           this.identifierPositionStack, this.identifierPtr + 1, positions, 0, length);
       if (dim == 0) {
         ref = new QualifiedTypeReference(tokens, positions);
         if (this.reportReferenceInfo) {
           this.requestor.acceptTypeReference(
               ((QualifiedTypeReference) ref).tokens, ref.sourceStart, ref.sourceEnd);
         }
       } else {
         annotationsOnDimensions = getAnnotationsOnDimensions(dim);
         ref = new ArrayQualifiedTypeReference(tokens, dim, annotationsOnDimensions, positions);
         ref.sourceEnd = this.endPosition;
         if (annotationsOnDimensions != null) {
           ref.bits |= ASTNode.HasTypeAnnotations;
         }
         if (this.reportReferenceInfo) {
           this.requestor.acceptTypeReference(
               ((ArrayQualifiedTypeReference) ref).tokens, ref.sourceStart, ref.sourceEnd);
         }
       }
     }
   }
   int levels = ref.getAnnotatableLevels();
   for (int i = levels - 1; i >= 0; i--) {
     if ((length = this.typeAnnotationLengthStack[this.typeAnnotationLengthPtr--]) != 0) {
       if (ref.annotations == null) ref.annotations = new Annotation[levels][];
       System.arraycopy(
           this.typeAnnotationStack,
           (this.typeAnnotationPtr -= length) + 1,
           ref.annotations[i] = new Annotation[length],
           0,
           length);
       if (i == 0) {
         ref.sourceStart = ref.annotations[0][0].sourceStart;
       }
       ref.bits |= ASTNode.HasTypeAnnotations;
     }
   }
   return ref;
 }
 public TypeReference getTypeReference(int dim) {
   /* build a Reference on a variable that may be qualified or not
    * This variable is a type reference and dim will be its dimensions
    */
   int length = this.identifierLengthStack[this.identifierLengthPtr--];
   if (length < 0) { // flag for precompiled type reference on base types
     TypeReference ref = TypeReference.baseTypeReference(-length, dim);
     ref.sourceStart = this.intStack[this.intPtr--];
     if (dim == 0) {
       ref.sourceEnd = this.intStack[this.intPtr--];
     } else {
       this.intPtr--; // no need to use this position as it is an array
       ref.sourceEnd = this.endPosition;
     }
     if (this.reportReferenceInfo) {
       this.requestor.acceptTypeReference(
           ref.getParameterizedTypeName(), ref.sourceStart, ref.sourceEnd);
     }
     return ref;
   } else {
     int numberOfIdentifiers =
         this.genericsIdentifiersLengthStack[this.genericsIdentifiersLengthPtr--];
     if (length != numberOfIdentifiers || this.genericsLengthStack[this.genericsLengthPtr] != 0) {
       // generic type
       TypeReference ref = getTypeReferenceForGenericType(dim, length, numberOfIdentifiers);
       if (this.reportReferenceInfo) {
         if (length == 1 && numberOfIdentifiers == 1) {
           ParameterizedSingleTypeReference parameterizedSingleTypeReference =
               (ParameterizedSingleTypeReference) ref;
           this.requestor.acceptTypeReference(
               parameterizedSingleTypeReference.token,
               parameterizedSingleTypeReference.sourceStart);
         } else {
           ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference =
               (ParameterizedQualifiedTypeReference) ref;
           this.requestor.acceptTypeReference(
               parameterizedQualifiedTypeReference.tokens,
               parameterizedQualifiedTypeReference.sourceStart,
               parameterizedQualifiedTypeReference.sourceEnd);
         }
       }
       return ref;
     } else if (length == 1) {
       // single variable reference
       this.genericsLengthPtr--; // pop the 0
       if (dim == 0) {
         SingleTypeReference ref =
             new SingleTypeReference(
                 this.identifierStack[this.identifierPtr],
                 this.identifierPositionStack[this.identifierPtr--]);
         if (this.reportReferenceInfo) {
           this.requestor.acceptTypeReference(ref.token, ref.sourceStart);
         }
         return ref;
       } else {
         ArrayTypeReference ref =
             new ArrayTypeReference(
                 this.identifierStack[this.identifierPtr],
                 dim,
                 this.identifierPositionStack[this.identifierPtr--]);
         ref.sourceEnd = this.endPosition;
         if (this.reportReferenceInfo) {
           this.requestor.acceptTypeReference(ref.token, ref.sourceStart);
         }
         return ref;
       }
     } else { // Qualified variable reference
       this.genericsLengthPtr--;
       char[][] tokens = new char[length][];
       this.identifierPtr -= length;
       long[] positions = new long[length];
       System.arraycopy(this.identifierStack, this.identifierPtr + 1, tokens, 0, length);
       System.arraycopy(
           this.identifierPositionStack, this.identifierPtr + 1, positions, 0, length);
       if (dim == 0) {
         QualifiedTypeReference ref = new QualifiedTypeReference(tokens, positions);
         if (this.reportReferenceInfo) {
           this.requestor.acceptTypeReference(ref.tokens, ref.sourceStart, ref.sourceEnd);
         }
         return ref;
       } else {
         ArrayQualifiedTypeReference ref = new ArrayQualifiedTypeReference(tokens, dim, positions);
         ref.sourceEnd = this.endPosition;
         if (this.reportReferenceInfo) {
           this.requestor.acceptTypeReference(ref.tokens, ref.sourceStart, ref.sourceEnd);
         }
         return ref;
       }
     }
   }
 }