Esempio n. 1
0
  @Override
  public void visitCode(Code obj) {
    Method m = getMethod();
    if (m.getReturnType() == Type.VOID) {
      return;
    }

    stack.resetForMethodEntry(this);
    ifBlocks.clear();
    activeUnconditional = null;

    CodeException[] ces = obj.getExceptionTable();
    if (CollectionUtils.isEmpty(ces)) {
      catchPCs = null;
    } else {
      catchPCs = new BitSet();
      for (CodeException ce : ces) {
        catchPCs.set(ce.getHandlerPC());
      }
    }
    gotoBranchPCs.clear();
    casePositions.clear();
    lookingForResetOp = false;

    try {
      super.visitCode(obj);
    } catch (StopOpcodeParsingException e) {
      // reported an issue, so get out
    }
  }
  @Override
  public void visitClassContext(ClassContext classContext) {
    JavaClass javaClass = classContext.getJavaClass();

    // The class extends WebChromeClient
    boolean isWebChromeClient =
        InterfaceUtils.isSubtype(javaClass, "android.webkit.WebChromeClient");

    // Not the target of this detector
    if (!isWebChromeClient) return;

    Method[] methodList = javaClass.getMethods();

    for (Method m : methodList) {
      MethodGen methodGen = classContext.getMethodGen(m);

      if (DEBUG) System.out.println(">>> Method: " + m.getName());

      // The presence of onGeolocationPermissionsShowPrompt is not enforce for the moment
      if (!m.getName().equals("onGeolocationPermissionsShowPrompt")) {
        continue;
      }

      // Since the logic implemented need to be analyze by a human, all implementation will be
      // flagged.

      bugReporter.reportBug(
          new BugInstance(this, ANDROID_GEOLOCATION_TYPE, Priorities.NORMAL_PRIORITY) //
              .addClassAndMethod(javaClass, m));
    }
  }
Esempio n. 3
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  /** Loads the code of the method. */
  protected Instruction[] loadCode(Method m) {
    Code c = m.getCode();

    if (c == null) {
      return null;
    }

    InstructionList il = new InstructionList(c.getCode());
    InstructionHandle[] hs = il.getInstructionHandles();
    int length = hs.length;
    Instruction[] is = new Instruction[length];

    for (int i = 0; i < length; i++) {
      is[i] = insnFactory.createAndInitialize(this, hs[i], i, m.getConstantPool());

      if (c.getLineNumberTable() != null) {
        // annoying bug when BCEL don't seem to find linenumber - pos match
        // also sometimes linenumber tables are not available
        is[i].setContext(
            ci.getName(),
            name,
            c.getLineNumberTable().getSourceLine(is[i].getPosition()),
            is[i].getPosition());
      }
    }

    return is;
  }
  /**
   * @param classContext
   * @param method
   */
  private void analyzeMethod(ClassContext classContext, Method method)
      throws MethodUnprofitableException, CFGBuilderException, DataflowAnalysisException {
    if (method.isSynthetic()
        || (method.getAccessFlags() & Constants.ACC_BRIDGE) == Constants.ACC_BRIDGE) return;
    CFG cfg = classContext.getCFG(method);
    TypeDataflow typeDataflow = classContext.getTypeDataflow(method);
    ConstantPoolGen constantPoolGen = classContext.getConstantPoolGen();

    locationLoop:
    for (Iterator<Location> iter = cfg.locationIterator(); iter.hasNext(); ) {
      Location location = iter.next();
      InstructionHandle handle = location.getHandle();
      Instruction ins = handle.getInstruction();

      // Only consider invoke instructions
      if (!(ins instanceof InvokeInstruction)) continue;
      if (ins instanceof INVOKEINTERFACE) continue;

      InvokeInstruction inv = (InvokeInstruction) ins;
      TypeFrame frame = typeDataflow.getFactAtLocation(location);

      String methodName = inv.getMethodName(constantPoolGen);
      if (methodName.toLowerCase().indexOf("unsupported") >= 0) continue;
      String methodSig = inv.getSignature(constantPoolGen);
      if (methodSig.equals("()Ljava/lang/UnsupportedOperationException;")) continue;

      Set<XMethod> targets;
      try {

        targets = Hierarchy2.resolveMethodCallTargets(inv, frame, constantPoolGen);
      } catch (ClassNotFoundException e) {
        AnalysisContext.reportMissingClass(e);
        continue locationLoop;
      }
      if (targets.isEmpty()) continue locationLoop;
      int priority = targets.size() == 1 ? Priorities.HIGH_PRIORITY : Priorities.NORMAL_PRIORITY;
      for (XMethod m : targets) {
        if (!m.isUnsupported()) continue locationLoop;
        XClass xc = AnalysisContext.currentXFactory().getXClass(m.getClassDescriptor());
        if (!(inv instanceof INVOKESTATIC) && !(m.isFinal() || xc.isFinal()))
          priority = Priorities.NORMAL_PRIORITY;
        if (xc == null || xc.isAbstract()) {
          try {
            if (!AnalysisContext.currentAnalysisContext()
                .getSubtypes2()
                .hasSubtypes(m.getClassDescriptor())) continue locationLoop;
          } catch (ClassNotFoundException e) {
            AnalysisContext.reportMissingClass(e);
            continue locationLoop;
          }
        }
      }
      BugInstance bug =
          new BugInstance(this, "DMI_UNSUPPORTED_METHOD", priority)
              .addClassAndMethod(classContext.getJavaClass(), method)
              .addCalledMethod(constantPoolGen, inv)
              .addSourceLine(classContext, method, location);
      bugReporter.reportBug(bug);
    }
  }
Esempio n. 5
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  /** Returns the exceptions of the method. */
  protected ExceptionHandler[] loadExceptions(Method m) {
    Code c = m.getCode();

    if (c == null) {
      return null;
    }

    CodeException[] ce = c.getExceptionTable();

    if (ce.length == 0) {
      return null;
    }

    int length = ce.length;
    ExceptionHandler[] eh = new ExceptionHandler[length];

    ConstantPool cp = m.getConstantPool();

    for (int i = 0; i < length; i++) {
      int ct = ce[i].getCatchType();
      eh[i] =
          new ExceptionHandler(
              ((ct == 0)
                  ? null
                  : cp.getConstantString(ct, Constants.CONSTANT_Class).replace('/', '.')),
              ce[i].getStartPC(),
              ce[i].getEndPC(),
              ce[i].getHandlerPC());
    }

    return eh;
  }
Esempio n. 6
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 public SearchResult run(RSClient data, HashMap<String, ClassGen> classes) {
   for (ClassGen c : classes.values()) {
     ConstantPoolGen cpg = c.getConstantPool();
     if (cpg.lookupFloat(16384.0000f) != -1) {
       for (Method m : c.getMethods()) {
         if (m.isStatic()) {
           MethodGen gen = new MethodGen(m, c.getClassName(), cpg);
           InstructionList il = gen.getInstructionList();
           if (il == null) continue;
           InstructionFinder f = new InstructionFinder(il);
           Iterator e = f.search("GETSTATIC LDC FSUB PUTSTATIC");
           if (e.hasNext()) {
             InstructionHandle[] handles = (InstructionHandle[]) e.next();
             data.addField(
                 "MapAngle",
                 ((GETSTATIC) handles[0].getInstruction()).getClassName(cpg)
                     + "."
                     + ((GETSTATIC) handles[0].getInstruction()).getFieldName(cpg));
             return SearchResult.Success;
           }
         }
       }
     }
   }
   return SearchResult.Failure;
 }
  /* (non-Javadoc)
   * @see edu.umd.cs.findbugs.classfile.IAnalysisEngine#analyze(edu.umd.cs.findbugs.classfile.IAnalysisCache, java.lang.Object)
   */
  public Method analyze(IAnalysisCache analysisCache, MethodDescriptor descriptor)
      throws CheckedAnalysisException {
    JavaClass jclass =
        analysisCache.getClassAnalysis(JavaClass.class, descriptor.getClassDescriptor());
    Method[] methodList = jclass.getMethods();

    Method result = null;

    // As a side-effect, cache all of the Methods for this JavaClass
    for (Method method : methodList) {
      MethodDescriptor methodDescriptor =
          DescriptorFactory.instance()
              .getMethodDescriptor(
                  descriptor.getSlashedClassName(),
                  method.getName(),
                  method.getSignature(),
                  method.isStatic());

      // Put in cache eagerly
      analysisCache.eagerlyPutMethodAnalysis(Method.class, methodDescriptor, method);

      if (methodDescriptor.equals(descriptor)) {
        result = method;
      }
    }

    return result;
  }
  @Override
  public void visitClassContext(ClassContext classContext) {
    if (!testingEnabled) {
      return;
    }
    analysisContext = AnalysisContext.currentAnalysisContext();
    Method[] methodList = classContext.getJavaClass().getMethods();
    for (Method method : methodList) {
      if (method.getCode() == null) {
        continue;
      }

      try {

        analyzeMethod(classContext, method);
      } catch (CFGBuilderException e) {
        bugReporter.logError(
            "Error checking for infinite recursive loop in "
                + SignatureConverter.convertMethodSignature(classContext.getJavaClass(), method),
            e);
      } catch (DataflowAnalysisException e) {
        bugReporter.logError(
            "Error checking for infinite recursive loop in "
                + SignatureConverter.convertMethodSignature(classContext.getJavaClass(), method),
            e);
      }
    }
  }
  public static LocalVariableAnnotation getLocalVariableAnnotation(
      Method method, int local, int position1, int position2) {

    LocalVariableTable localVariableTable = method.getLocalVariableTable();
    String localName = "?";
    if (localVariableTable != null) {
      LocalVariable lv1 = localVariableTable.getLocalVariable(local, position1);
      if (lv1 == null) {
        lv1 = localVariableTable.getLocalVariable(local, position2);
        position1 = position2;
      }
      if (lv1 != null) localName = lv1.getName();
      else
        for (LocalVariable lv : localVariableTable.getLocalVariableTable()) {
          if (lv.getIndex() == local) {
            if (!localName.equals("?") && !localName.equals(lv.getName())) {
              // not a single consistent name
              localName = "?";
              break;
            }
            localName = lv.getName();
          }
        }
    }
    LineNumberTable lineNumbers = method.getLineNumberTable();
    if (lineNumbers == null) return new LocalVariableAnnotation(localName, local, position1);
    int line = lineNumbers.getSourceLine(position1);
    return new LocalVariableAnnotation(localName, local, position1, line);
  }
 public static @CheckForNull LocalVariableAnnotation findUniqueBestMatchingParameter(
     ClassContext classContext, Method method, String name, String signature) {
   LocalVariableAnnotation match = null;
   int localsThatAreParameters = PreorderVisitor.getNumberArguments(method.getSignature());
   int startIndex = 0;
   if (!method.isStatic()) startIndex = 1;
   SignatureParser parser = new SignatureParser(method.getSignature());
   Iterator<String> signatureIterator = parser.parameterSignatureIterator();
   int lowestCost = Integer.MAX_VALUE;
   for (int i = startIndex; i < localsThatAreParameters + startIndex; i++) {
     String sig = signatureIterator.next();
     if (signature.equals(sig)) {
       LocalVariableAnnotation potentialMatch =
           LocalVariableAnnotation.getLocalVariableAnnotation(method, i, 0, 0);
       if (!potentialMatch.isNamed()) continue;
       int distance = EditDistance.editDistance(name, potentialMatch.getName());
       if (distance < lowestCost) {
         match = potentialMatch;
         match.setDescription(DID_YOU_MEAN_ROLE);
         lowestCost = distance;
       } else if (distance == lowestCost) {
         // not unique best match
         match = null;
       }
       // signatures match
     }
   }
   if (lowestCost < 5) return match;
   return null;
 }
Esempio n. 11
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    /** new style encoding is targetClassName ('!' | '?') methodName '.' methodSign */
    boolean decode(String encodedBinding, ClassGen cg) {
      int sepPos = encodedBinding.indexOf('!');
      if (sepPos != -1) { // static method:
        invokeKind = INVOKESTATIC;
      } else {
        sepPos = encodedBinding.indexOf('?');
        if (sepPos != -1) {
          invokeKind = INVOKEVIRTUAL;
        } else {
          return false; // old style
        }
      }
      targetClass = encodedBinding.substring(0, sepPos);
      int sigPos = encodedBinding.indexOf('(', sepPos);
      methodName = encodedBinding.substring(sepPos + 1, sigPos);
      methodSign = encodedBinding.substring(sigPos);

      returnType = Type.getReturnType(methodSign);
      args = Type.getArgumentTypes(methodSign);

      accessorName = "_OT$decaps$" + methodName;
      existsAlready = cg.containsMethod(accessorName, methodSign) != null;
      if (invokeKind == INVOKEVIRTUAL) {
        Method existing = cg.containsMethod(methodName, methodSign);
        if (existing != null && existing.isPrivate())
          invokeKind = INVOKESPECIAL; // accessing private
      }

      return true;
    }
  /**
   * implements the visitor to reset the stack and proceed for private methods
   *
   * @param obj the context object of the currently parsed code block
   */
  @Override
  public void visitCode(Code obj) {
    Method m = getMethod();
    int aFlags = m.getAccessFlags();
    if ((((aFlags & Constants.ACC_PRIVATE) != 0) || ((aFlags & Constants.ACC_STATIC) != 0))
        && ((aFlags & Constants.ACC_SYNTHETIC) == 0)
        && (!m.getSignature().endsWith(")Z"))) {
      stack.resetForMethodEntry(this);
      returnRegister = -1;
      returnConstant = null;
      registerConstants.clear();
      methodSuspect = true;
      returnPC = -1;
      super.visitCode(obj);
      if (methodSuspect && (returnConstant != null)) {
        BugInstance bi =
            new BugInstance(
                    this,
                    BugType.MRC_METHOD_RETURNS_CONSTANT.name(),
                    ((aFlags & Constants.ACC_PRIVATE) != 0) ? NORMAL_PRIORITY : LOW_PRIORITY)
                .addClass(this)
                .addMethod(this);
        if (returnPC >= 0) {
          bi.addSourceLine(this, returnPC);
        }

        bi.addString(returnConstant.toString());
        bugReporter.reportBug(bi);
      }
    }
  }
Esempio n. 13
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 /**
  * Construct a MethodDescriptor from JavaClass and method.
  *
  * @param jclass a JavaClass
  * @param method a Method belonging to the JavaClass
  * @return a MethodDescriptor identifying the method
  */
 public static MethodDescriptor getMethodDescriptor(JavaClass jclass, Method method) {
   return DescriptorFactory.instance()
       .getMethodDescriptor(
           jclass.getClassName().replace('.', '/'),
           method.getName(),
           method.getSignature(),
           method.isStatic());
 }
 /** Methods marked with the "Synthetic" attribute do not appear in the source code */
 private boolean isSynthetic(Method m) {
   if ((m.getAccessFlags() & Constants.ACC_SYNTHETIC) != 0) return true;
   Attribute[] attrs = m.getAttributes();
   for (Attribute attr : attrs) {
     if (attr instanceof Synthetic) return true;
   }
   return false;
 }
  /**
   * overrides the visitor to find abstract methods that override concrete ones
   *
   * @param obj the context object of the currently parsed method
   */
  @Override
  public void visitMethod(Method obj) {
    if (!obj.isAbstract()) return;

    String methodName = obj.getName();
    String methodSig = obj.getSignature();
    outer:
    for (JavaClass cls : superClasses) {
      Method[] methods = cls.getMethods();
      for (Method m : methods) {
        if (m.isPrivate() || m.isAbstract()) continue;
        if (methodName.equals(m.getName()) && methodSig.equals(m.getSignature())) {
          BugInstance bug =
              new BugInstance(this, BugType.AOM_ABSTRACT_OVERRIDDEN_METHOD.name(), NORMAL_PRIORITY)
                  .addClass(this)
                  .addMethod(this);

          Code code = obj.getCode();
          if (code != null) bug.addSourceLineRange(clsContext, this, 0, code.getLength() - 1);
          bugReporter.reportBug(bug);

          break outer;
        }
      }
    }
  }
Esempio n. 16
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  @Override
  public String toString() {
    StringBuilder s = new StringBuilder();
    String n = String.format("%n");

    s.append("Equivalent methods:" + n);
    for (Method bzm : manifest.getBaseMethods()) {
      s.append("  " + bzm.getName() + " -> { ");
      for (Method zm : ELM.get(bzm))
        s.append(zm.getReturnType() + ":" + zm.getName() + " "); // TODO fix this info
      s.append("}" + n);
    }

    s.append("Equivalent types:" + n);
    for (JavaClass bzt : manifest.getBaseTypes()) {
      s.append("  " + bzt.getClassName() + " -> { ");
      for (JavaClass zt : ET.get(bzt)) s.append(zt.getClassName() + " ");
      s.append("}" + n);
    }

    s.append("Method costs:" + n);
    for (Method zm : CLM.keySet())
      s.append("  " + zm.getName() + " -> " + CLM.get(zm).getName() + n);

    s.append("Transformation costs:" + n);
    for (Method zs : CLS.keySet())
      s.append("  " + zs.getName() + " -> " + CLS.get(zs).getName() + n);

    return s.toString();
  }
  /**
   * Returns a string describing a method declaration. It contains the access flags (public,
   * private, static, etc), the return type, the method name, and the types of each of its
   * arguments.
   */
  public static String get_method_declaration(Method m) {

    StringBuilder sb = new StringBuilder();
    Formatter f = new Formatter(sb);

    f.format("%s %s %s (", get_access_flags(m), m.getReturnType(), m.getName());
    for (Type at : m.getArgumentTypes()) {
      f.format("%s, ", at);
    }
    f.format(")");
    return (sb.toString().replace(", )", ")"));
  }
  /**
   * Constructor.
   *
   * @param method an XMethod specifying a specific method in a specific class
   * @throws ClassNotFoundException
   */
  public JavaClassAndMethod(XMethod method) throws ClassNotFoundException {

    this.javaClass = Repository.lookupClass(method.getClassName());
    for (Method m : javaClass.getMethods())
      if (m.getName().equals(method.getName())
          && m.getSignature().equals(method.getSignature())
          && m.isStatic() == method.isStatic()) {
        this.method = m;
        return;
      }
    throw new IllegalArgumentException("Can't find " + method);
  }
Esempio n. 19
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    public void visitMethod(Method method) {

      super.visitMethod(method);
      // now get the MethodInfo back from the ClassInfo for
      // additional work.
      String methodId = method.getName() + method.getSignature();
      OldMethodInfo mi = getITMethodInfo(methodId);
      if (JOPizer.dumpMgci) {
        // GCRT
        new GCRTMethodInfo(mi, method);
      }
    }
Esempio n. 20
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  /**
   * checks to see if it this class has unit test related annotations attached to methods
   *
   * @param cls the class to check
   * @return if a unit test annotation was found
   */
  private static boolean isTestClass(JavaClass cls) {
    for (Method m : cls.getMethods()) {
      for (AnnotationEntry entry : m.getAnnotationEntries()) {
        String type = entry.getAnnotationType();
        if (type.startsWith("Lorg/junit/") || type.startsWith("Lorg/testng/")) {
          return true;
        }
      }
    }

    return false;
  }
  @Override
  public void visitClassContext(ClassContext classContext) {
    JavaClass javaClass = classContext.getJavaClass();

    Method[] methodList = javaClass.getMethods();

    for (Method m : methodList) {
      MethodGen methodGen = classContext.getMethodGen(m);

      if (DEBUG) {
        System.out.println(">>> Method: " + m.getName());
      }

      // To suspect that an invalid String representation is being build,
      // we identify the construction of a MessageDigest and
      // the use of a function that trim leading 0.
      boolean invokeMessageDigest = false;
      boolean invokeToHexString = false;

      ConstantPoolGen cpg = classContext.getConstantPoolGen();
      if (methodGen == null || methodGen.getInstructionList() == null) {
        continue; // No instruction .. nothing to do
      }
      for (Iterator itIns = methodGen.getInstructionList().iterator(); itIns.hasNext(); ) {
        Instruction inst = ((InstructionHandle) itIns.next()).getInstruction();
        if (DEBUG) {
          ByteCode.printOpCode(inst, cpg);
        }

        if (inst instanceof INVOKEVIRTUAL) { // MessageDigest.digest is called
          INVOKEVIRTUAL invoke = (INVOKEVIRTUAL) inst;
          if ("java.security.MessageDigest".equals(invoke.getClassName(cpg))
              && "digest".equals(invoke.getMethodName(cpg))) {
            invokeMessageDigest = true;
          }
        } else if (inst instanceof INVOKESTATIC
            && invokeMessageDigest) { // The conversion must occurs after the digest was created
          INVOKESTATIC invoke = (INVOKESTATIC) inst;
          if ("java.lang.Integer".equals(invoke.getClassName(cpg))
              && "toHexString".equals(invoke.getMethodName(cpg))) {
            invokeToHexString = true;
          }
        }
      }

      if (invokeMessageDigest && invokeToHexString) {
        bugReporter.reportBug(
            new BugInstance(this, BAD_HEXA_CONVERSION_TYPE, Priorities.NORMAL_PRIORITY) //
                .addClassAndMethod(javaClass, m));
      }
    }
  }
Esempio n. 22
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 /** is there a JUnit3TestSuite */
 private boolean hasSuite(Method[] methods) {
   for (Method m : methods) {
     if (m.getName().equals("suite")
         && m.isPublic()
         && m.isStatic()
         // && m.getReturnType().equals(junit.framework.Test.class)
         // && m.getArgumentTypes().length == 0
         && m.getSignature().equals("()Ljunit/framework/Test;")) {
       return true;
     }
   }
   return false;
 }
Esempio n. 23
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  /** Main entry for this transformer. */
  public void doTransformInterface(ClassEnhancer ce, ClassGen cg) {
    String class_name = cg.getClassName();
    ConstantPoolGen cpg = cg.getConstantPool();

    checkReadClassAttributes(ce, cg, class_name, cpg);

    generateFieldAccessForCallout(ce, cg, class_name, cpg);

    generateSuperAccessors(ce, cg, class_name, cpg);

    HashSet<String> calloutBindings = CallinBindingManager.getCalloutBindings(class_name);

    if (calloutBindings == null) {
      if (logging) printLogMessage("\nClass " + class_name + " requires no callout adjustment.");
      return;
    }

    if (logging) printLogMessage("\nCallout bindings might be changing class " + class_name + ":");

    HashSet<String> oldStyleBinding = new HashSet<String>();

    // try new style decapsulation first (since 1.2.8):
    for (String calloutBinding : calloutBindings) {
      DecapsulationDescriptor desc = new DecapsulationDescriptor();
      if (!desc.decode(calloutBinding, cg))
        oldStyleBinding.add(calloutBinding); // old style attribute
      else if (!desc.existsAlready) ce.addMethod(desc.generate(class_name, cpg), cg);
    }

    if (oldStyleBinding.isEmpty()) return;

    // --> follows: old style decapsulation for remaining bindings:
    int pos = class_name.lastIndexOf('.');
    String package_name = "NO_PACKAGE";
    if (pos != -1) package_name = class_name.substring(0, pos);

    Method[] methods = cg.getMethods();
    for (int i = 0; i < methods.length; i++) {
      Method m = methods[i];
      String method_name = m.getName();

      boolean requiresAdjustment =
          CallinBindingManager.requiresCalloutAdjustment(
              oldStyleBinding, method_name, m.getSignature());

      if (requiresAdjustment) {
        ce.decapsulateMethod(m, cg, package_name, cpg);
      }
    }
  }
  public void addAllDefinitions(JavaClass obj) {
    String className2 = obj.getClassName();

    defined.add(className2);
    for (Method m : obj.getMethods())
      if (!m.isPrivate()) {
        String name = getMemberName(obj, className2, m.getNameIndex(), m.getSignatureIndex());
        defined.add(name);
      }
    for (Field f : obj.getFields())
      if (!f.isPrivate()) {
        String name = getMemberName(obj, className2, f.getNameIndex(), f.getSignatureIndex());
        defined.add(name);
      }
  }
Esempio n. 25
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  protected void loadParameterAnnotations(Method m) {

    for (Attribute a : m.getAttributes()) {
      if (a instanceof ParameterAnnotations) {
        ParameterAnnotationEntry[] paEntries =
            ((ParameterAnnotations) a).getParameterAnnotationEntries();

        AnnotationInfo[][] paramAnnos = new AnnotationInfo[paEntries.length][];

        for (int i = 0; i < paEntries.length; i++) {
          AnnotationEntry[] ae = paEntries[i].getAnnotationEntries();

          if (ae.length > 0) {
            AnnotationInfo[] annos = new AnnotationInfo[ae.length];
            for (int j = 0; j < ae.length; j++) {
              annos[j] = new AnnotationInfo(ae[j]);
            }
            paramAnnos[i] = annos;

          } else {
            // this paramter doesn't have an AnnotationInfo
          }
        }

        parameterAnnotations = paramAnnos;
      }
    }
  }
Esempio n. 26
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  /** Loads the line numbers for the method. */
  protected int[] loadLineNumbers(Method m) {
    Code c = m.getCode();

    if (c == null) {
      return null;
    }

    LineNumberTable lnt = c.getLineNumberTable();

    int length = code.length;
    int[] ln = new int[length];

    if (lnt == null) {
      // no line information
      return null;
    } else {
      for (int i = 0; i < length; i++) {
        try { // annoying bug when BCEL don't seem to find linenumber - pos match
          ln[i] = lnt.getSourceLine(code[i].getPosition());
        } catch (RuntimeException e) {
          System.out.print("^");
        }
      }
    }

    return ln;
  }
  /**
   * Dumps the contents of the specified class to the specified directory. The file is named
   * dump_dir/[class].bcel. It contains a synopsis of the fields and methods followed by the jvm
   * code for each method.
   *
   * @param jc javaclass to dump
   * @param dump_dir directory in which to write the file
   */
  public static void dump(JavaClass jc, File dump_dir) {

    try {
      dump_dir.mkdir();
      File path = new File(dump_dir, jc.getClassName() + ".bcel");
      PrintStream p = new PrintStream(path);

      // Print the class, super class and interfaces
      p.printf("class %s extends %s\n", jc.getClassName(), jc.getSuperclassName());
      String[] inames = jc.getInterfaceNames();
      if ((inames != null) && (inames.length > 0)) {
        p.printf("   ");
        for (String iname : inames) p.printf("implements %s ", iname);
        p.printf("\n");
      }

      // Print each field
      p.printf("\nFields\n");
      for (Field f : jc.getFields()) p.printf("  %s\n", f);

      // Print the signature of each method
      p.printf("\nMethods\n");
      for (Method m : jc.getMethods()) p.printf("  %s\n", m);

      // If this is not an interface, print the code for each method
      if (!jc.isInterface()) {
        for (Method m : jc.getMethods()) {
          p.printf("\nMethod %s\n", m);
          Code code = m.getCode();
          if (code != null) p.printf("  %s\n", code.toString().replace("\n", "\n  "));
        }
      }

      // Print the details of the constant pool.
      p.printf("Constant Pool:\n");
      ConstantPool cp = jc.getConstantPool();
      Constant[] constants = cp.getConstantPool();
      for (int ii = 0; ii < constants.length; ii++) {
        p.printf("  %d %s\n", ii, constants[ii]);
      }

      p.close();

    } catch (Exception e) {
      throw new Error("Unexpected error dumping javaclass", e);
    }
  }
 /**
  * Returns the name of the join point.
  *
  * @param method the method
  * @param methodSequence the method sequence
  * @return the name of the join point
  */
 private static String getJoinPointName(final Method method, final int methodSequence) {
   final StringBuffer joinPoint = new StringBuffer();
   joinPoint.append(TransformationUtil.MEMBER_METHOD_JOIN_POINT_PREFIX);
   joinPoint.append(method.getName());
   joinPoint.append(TransformationUtil.DELIMITER);
   joinPoint.append(methodSequence);
   return joinPoint.toString();
 }
Esempio n. 29
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 @Override
 public int hashCode() {
   final int prime = 31;
   int result = 1;
   result = prime * result + ((clazz == null) ? 0 : clazz.hashCode());
   result = prime * result + ((method == null) ? 0 : method.hashCode());
   return result;
 }
Esempio n. 30
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 /** Returns the classnames of checked exceptions thrown by the method. */
 protected String[] loadThrownExceptionClassNames(Method m) {
   ExceptionTable et = m.getExceptionTable();
   if (et != null) {
     return et.getExceptionNames();
   } else {
     return null;
   }
 }