Package org.apache.bcel.generic

Examples of org.apache.bcel.generic.Instruction

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        int maxCount = 7;
        while (ins != null) {
            if (maxCount-- <= 0) {
                break;
            }
            Instruction i = ins.getInstruction();
            if (i instanceof ATHROW) {
                return true;
            }
            if (i instanceof InstructionTargeter || i instanceof ReturnInstruction) {
                return false;
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        BugAnnotation variableAnnotation = null;
        try {
            // Get the value number
            ValueNumberFrame vnaFrame = classContext.getValueNumberDataflow(method).getFactAtLocation(location);
            if (vnaFrame.isValid()) {
                Instruction ins = location.getHandle().getInstruction();

                ValueNumber valueNumber = vnaFrame.getInstance(ins, classContext.getConstantPoolGen());
                if (valueNumber.hasFlag(ValueNumber.CONSTANT_CLASS_OBJECT)) {
                    return;
                }
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        BugAnnotation variableAnnotation = null;
        try {
            // Get the value number
            ValueNumberFrame vnaFrame = classContext.getValueNumberDataflow(method).getFactAtLocation(location);
            if (vnaFrame.isValid()) {
                Instruction ins = location.getHandle().getInstruction();

                ValueNumber valueNumber = vnaFrame.getInstance(ins, classContext.getConstantPoolGen());
                if (valueNumber.hasFlag(ValueNumber.CONSTANT_CLASS_OBJECT)) {
                    return null;
                }
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                int line = ln.getSourceLine(pos);
                if (line != firstLine) {
                    break;
                }
            }
            Instruction i = h.getInstruction();
            if (i instanceof InvokeInstruction) {
                InvokeInstruction ii = (InvokeInstruction) i;
                String name = ii.getMethodName(classContext.getConstantPoolGen());
                if (name.startsWith("check") || name.startsWith("assert")) {
                    return true;
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            while (bbIter.hasNext()) {
                BasicBlock basicBlock = bbIter.next();

                if (basicBlock.isNullCheck()) {
                    InstructionHandle exceptionThrowerHandle = basicBlock.getExceptionThrower();
                    Instruction exceptionThrower = exceptionThrowerHandle.getInstruction();
                    ValueNumberFrame vnaFrame = vna.getStartFact(basicBlock);
                    if (!vnaFrame.isValid()) {
                        continue;
                    }
                    ValueNumber valueNumber = vnaFrame.getInstance(exceptionThrower, cpg);

                    Location location = new Location(exceptionThrowerHandle, basicBlock);
                    if (valueNumberForThis != valueNumber) {
                        derefs.add(location, valueNumber, PointerUsageRequiringNonNullValue.getPointerDereference());
                    }

                }
            }

            for (Iterator<Location> i = cfg.locationIterator(); i.hasNext();) {
                Location location = i.next();
                InstructionHandle handle = location.getHandle();
                Instruction ins = handle.getInstruction();
                ValueNumberFrame valueNumberFrame = vna.getFactAtLocation(location);
                TypeFrame typeFrame = typeDataflow.getFactAtLocation(location);
                if (ins instanceof InvokeInstruction) {
                    InvokeInstruction inv = (InvokeInstruction) ins;
                    XMethod m = XFactory.createXMethod(inv, cpg);
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      break;

  default:
      final int initBuffer = cpg.addMethodref(STRING_BUFFER_CLASS,
                "<init>", "()V");
      final Instruction append =
    new INVOKEVIRTUAL(cpg.addMethodref(STRING_BUFFER_CLASS,
               "append",
               "("+STRING_SIG+")"
               +STRING_BUFFER_SIG));
     
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    /**
     * Returns an instruction for loading the value of this variable onto
     * the JVM stack.
     */
    public Instruction loadInstruction() {
  final Instruction instr = _loadInstruction;
  if (_loadInstruction == null) {
      _loadInstruction = _type.LOAD(_local.getIndex());
        }
  return _loadInstruction;
    }
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    /**
     * Returns an instruction for storing a value from the JVM stack
     * into this variable.
     */
    public Instruction storeInstruction() {
  final Instruction instr = _storeInstruction;
  if (_storeInstruction == null) {
      _storeInstruction = _type.STORE(_local.getIndex());
        }
  return _storeInstruction;
    }
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    /**
     * Set the instruction for loading the value of this variable onto the
     * JVM stack and returns the old instruction.
     */
    public Instruction setLoadInstruction(Instruction instruction) {
        Instruction tmp = _loadInstruction;
        _loadInstruction = instruction;
        return tmp;
    }
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    /**
     * Set the instruction for storing a value from the stack into this
     * variable and returns the old instruction.
     */
    public Instruction setStoreInstruction(Instruction instruction) {
        Instruction tmp = _storeInstruction;
        _storeInstruction = instruction;
        return tmp;
    }
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Related Classes of org.apache.bcel.generic.Instruction

  • ariba.awreload.FactorNotUsed
  • ariba.util.fieldvalue.CompiledAccessorFactory
  • com.lambda.Debugger.InstrumentorForCL
  • edu.umd.cs.findbugs.ba.AssertionMethods
  • edu.umd.cs.findbugs.ba.bcp.IfNull
  • edu.umd.cs.findbugs.ba.bcp.Invoke
  • edu.umd.cs.findbugs.ba.bcp.Load
  • edu.umd.cs.findbugs.ba.bcp.Monitorenter
  • edu.umd.cs.findbugs.ba.bcp.New
  • edu.umd.cs.findbugs.ba.bcp.Store
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