Examples of org.aspectj.weaver.patterns.Pointcut

org.aspectj.weaver.patterns.Pointcut
The lifecycle of Pointcuts is modeled by Pointcut.State. It has three things:
Creation -- SYMBOLIC -- then resolve(IScope) -- RESOLVED -- concretize(...) -- CONCRETE @author Erik Hilsdale @author Jim HuguninA day in the life of a pointcut.... - AMC. ========================================== Pointcuts are created by the PatternParser, which is called by ajdt to parse a pointcut from the PseudoTokens AST node (which in turn are part of a PointcutDesignator AST node). Pointcuts are resolved by ajdt when an AdviceDeclaration or a PointcutDeclaration has its statements resolved. This happens as part of completeTypeBindings in the AjLookupEnvironment which is called after the diet parse phase of the compiler. Named pointcuts, and references to named pointcuts are instances of ReferencePointcut. At the end of the compilation process, the pointcuts are serialized (write method) into attributes in the class file. When the weaver loads the class files, it unpacks the attributes and deserializes the pointcuts (read). All aspects are added to the world, by calling addOrReplaceAspect on the crosscutting members set of the world. When aspects are added or replaced, the crosscutting members in the aspect are extracted as ShadowMungers (each holding a pointcut). The ShadowMungers are concretized, which concretizes the pointcuts. At this stage ReferencePointcuts are replaced by their declared content. During weaving, the weaver processes type by type. It first culls potentially matching ShadowMungers by calling the fastMatch method on their pointcuts. Only those that might match make it through to the next phase. At the next phase, all of the shadows within the type are created and passed to the pointcut for matching (match). When the actual munging happens, matched pointcuts are asked for their residue (findResidue) - the runtime test if any. Because of negation, findResidue may be called on pointcuts that could never match the shadow.

   * @param struct for which we are parsing the per clause
   * @return a PerClause instance
   */
  private static PerClause parsePerClausePointcut(String perClauseString, AjAttributeStruct struct) {
    final String pointcutString;
    Pointcut pointcut = null;
    TypePattern typePattern = null;
    final PerClause perClause;
    if (perClauseString.startsWith(PerClause.KindAnnotationPrefix.PERCFLOW.getName())) {
      pointcutString = PerClause.KindAnnotationPrefix.PERCFLOW.extractPointcut(perClauseString);
      pointcut = parsePointcut(pointcutString, struct, false);

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        IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);


        // joinpoint, staticJoinpoint binding
        int extraArgument = extractExtraArgument(struct.method);


        Pointcut pc = null;
        if (preResolvedPointcut != null) {
          pc = preResolvedPointcut.getPointcut();
          // pc.resolve(binding);
        } else {
          pc = parsePointcut(beforeAdvice.getValue().stringifyValue(), struct, false);
          if (pc == null) {
            return false;// parse error
          }
          pc = pc.resolve(binding);
        }
        setIgnoreUnboundBindingNames(pc, bindings);


        ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
            struct.bMethod.getDeclarationOffset());

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        IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);


        // joinpoint, staticJoinpoint binding
        int extraArgument = extractExtraArgument(struct.method);


        Pointcut pc = null;
        if (preResolvedPointcut != null) {
          pc = preResolvedPointcut.getPointcut();
        } else {
          pc = parsePointcut(afterAdvice.getValue().stringifyValue(), struct, false);
          if (pc == null) {
            return false;// parse error
          }
          pc.resolve(binding);
        }
        setIgnoreUnboundBindingNames(pc, bindings);


        ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
            struct.bMethod.getDeclarationOffset());

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      // return binding
      if (returned != null) {
        extraArgument |= Advice.ExtraArgument;
      }


      Pointcut pc = null;
      if (preResolvedPointcut != null) {
        pc = preResolvedPointcut.getPointcut();
      } else {
        pc = parsePointcut(pointcut, struct, false);
        if (pc == null) {
          return false;// parse error
        }
        pc.resolve(binding);
      }
      setIgnoreUnboundBindingNames(pc, bindings);


      ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
          struct.bMethod.getDeclarationOffset());

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      // return binding
      if (thrownFormal != null) {
        extraArgument |= Advice.ExtraArgument;
      }


      Pointcut pc = null;
      if (preResolvedPointcut != null) {
        pc = preResolvedPointcut.getPointcut();
      } else {
        pc = parsePointcut(pointcut, struct, false);
        if (pc == null) {
          return false;// parse error
        }
        pc.resolve(binding);
      }
      setIgnoreUnboundBindingNames(pc, bindings);


      ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
          struct.bMethod.getDeclarationOffset());

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        IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);


        // joinpoint, staticJoinpoint binding
        int extraArgument = extractExtraArgument(struct.method);


        Pointcut pc = null;
        if (preResolvedPointcut != null) {
          pc = preResolvedPointcut.getPointcut();
        } else {
          pc = parsePointcut(aroundAdvice.getValue().stringifyValue(), struct, false);
          if (pc == null) {
            return false;// parse error
          }
          pc.resolve(binding);
        }
        setIgnoreUnboundBindingNames(pc, bindings);


        ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
            struct.bMethod.getDeclarationOffset());

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    return ret;
  }


  @Override
  public ShadowMunger parameterizeWith(ResolvedType declaringType, Map<String, UnresolvedType> typeVariableMap) {
    Pointcut pc = getPointcut().parameterizeWith(typeVariableMap, declaringType.getWorld());


    BcelAdvice ret = null;
    Member adviceSignature = signature;
    // allows for around advice where the return value is a type variable (see pr115250)
    if (signature instanceof ResolvedMember && signature.getDeclaringType().isGenericType()) {

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   * even when one single pointcut has one common element (which can be a side-effect of DNF rewriting).
   */
  private void rewritePointcuts(List<ShadowMunger> shadowMungers) {
    PointcutRewriter rewriter = new PointcutRewriter();
    for (ShadowMunger munger : shadowMungers) {
      Pointcut p = munger.getPointcut();
      Pointcut newP = rewriter.rewrite(p);
      // validateBindings now whilst we still have around the pointcut
      // that resembles what the user actually wrote in their program
      // text.
      if (munger instanceof Advice) {
        Advice advice = (Advice) munger;
        if (advice.getSignature() != null) {
          final int numFormals;
          final String names[];
          // If the advice is being concretized in a @AJ aspect *and*
          // the advice was declared in
          // an @AJ aspect (it could have been inherited from a code
          // style aspect) then
          // evaluate the alternative set of formals. pr125699
          if ((advice.getConcreteAspect().isAnnotationStyleAspect() && advice.getDeclaringAspect() != null && advice
              .getDeclaringAspect().resolve(world).isAnnotationStyleAspect())
              || advice.isAnnotationStyle()) {
            numFormals = advice.getBaseParameterCount();
            int numArgs = advice.getSignature().getParameterTypes().length;
            if (numFormals > 0) {
              names = advice.getSignature().getParameterNames(world);
              validateBindings(newP, p, numArgs, names);
            }
          } else {
            numFormals = advice.getBaseParameterCount();
            if (numFormals > 0) {
              names = advice.getBaseParameterNames(world);
              validateBindings(newP, p, numFormals, names);
            }
          }
        }
      }
      newP.m_ignoreUnboundBindingForNames = p.m_ignoreUnboundBindingForNames;
      munger.setPointcut(newP);
    }
    // now that we have optimized individual pointcuts, optimize
    // across the set of pointcuts....
    // Use a map from key based on pc equality, to value based on
    // pc identity.
    Map/* <Pointcut,Pointcut> */<Pointcut, Pointcut> pcMap = new HashMap<Pointcut, Pointcut>();
    for (Iterator iter = shadowMungers.iterator(); iter.hasNext();) {
      ShadowMunger munger = (ShadowMunger) iter.next();
      Pointcut p = munger.getPointcut();
      Pointcut newP = shareEntriesFromMap(p, pcMap);
      newP.m_ignoreUnboundBindingForNames = p.m_ignoreUnboundBindingForNames;
      munger.setPointcut(newP);
    }
  }

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    if (p instanceof ConcreteCflowPointcut) {
      return p;
    }
    if (p instanceof AndPointcut) {
      AndPointcut apc = (AndPointcut) p;
      Pointcut left = shareEntriesFromMap(apc.getLeft(), pcMap);
      Pointcut right = shareEntriesFromMap(apc.getRight(), pcMap);
      return new AndPointcut(left, right);
    } else if (p instanceof OrPointcut) {
      OrPointcut opc = (OrPointcut) p;
      Pointcut left = shareEntriesFromMap(opc.getLeft(), pcMap);
      Pointcut right = shareEntriesFromMap(opc.getRight(), pcMap);
      return new OrPointcut(left, right);
    } else if (p instanceof NotPointcut) {
      NotPointcut npc = (NotPointcut) p;
      Pointcut not = shareEntriesFromMap(npc.getNegatedPointcut(), pcMap);
      return new NotPointcut(not);
    } else {
      // primitive pcd
      if (pcMap.containsKey(p)) { // based on equality
        return pcMap.get(p); // same instance (identity)

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    }
  }


  private void validateOrBranch(OrPointcut pc, Pointcut userPointcut, int numFormals, String[] names, Pointcut[] leftBindings,
      Pointcut[] rightBindings) {
    Pointcut left = pc.getLeft();
    Pointcut right = pc.getRight();
    if (left instanceof OrPointcut) {
      Pointcut[] newRightBindings = new Pointcut[numFormals];
      validateOrBranch((OrPointcut) left, userPointcut, numFormals, names, leftBindings, newRightBindings);
    } else {
      if (left.couldMatchKinds() != Shadow.NO_SHADOW_KINDS_BITS) {
        validateSingleBranch(left, userPointcut, numFormals, names, leftBindings);
      }
    }
    if (right instanceof OrPointcut) {
      Pointcut[] newLeftBindings = new Pointcut[numFormals];
      validateOrBranch((OrPointcut) right, userPointcut, numFormals, names, newLeftBindings, rightBindings);
    } else {
      if (right.couldMatchKinds() != Shadow.NO_SHADOW_KINDS_BITS) {
        validateSingleBranch(right, userPointcut, numFormals, names, rightBindings);
      }
    }
    int kindsInCommon = left.couldMatchKinds() & right.couldMatchKinds();
    if (kindsInCommon != Shadow.NO_SHADOW_KINDS_BITS && couldEverMatchSameJoinPoints(left, right)) {
      // we know that every branch binds every formal, so there is no
      // ambiguity
      // if each branch binds it in exactly the same way...
      List<String> ambiguousNames = new ArrayList<String>();

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