Examples of XField

com.sissi.protocol.iq.data.XField
@author kim 2013年12月5日
edu.umd.cs.findbugs.ba.XField
Abstract representation of a field. Note that this is called "XField" to distinguish it from BCEL's Field class. Also, you can think of the "X" as expanding to "Instance" or "Static".
This interface and its implementations exist because Field objects in BCEL are awkward to deal with. They are not Comparable, it is difficult to find out what class they belong to, etc.

If the resolved() method returns true, then any information queried from this object can be assumed to be accurate. If the resolved() method returns false, then FindBugs can't find the field and any information other than name/signature/etc. cannot be trusted.
us.thinkable.framework.form.XField
xjavadoc.XField

Examples of edu.umd.cs.findbugs.ba.XField

    private boolean doForwardSubstitution() {
        if (!REDUNDANT_LOAD_ELIMINATION) {
            return false;
        }


        XField xfield = loadedFieldSet.getField(handle);
        if (xfield == null) {
            return false;
        }


        if (!xfield.isReferenceType()) {
            return false;
        }


        // Don't do forward substitution for fields that
        // are never read.

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Examples of edu.umd.cs.findbugs.ba.XField

        pushOutputValues(outputValueList);
    }


    @Override
    public void visitGETFIELD(GETFIELD obj) {
        XField xfield = Hierarchy.findXField(obj, getCPG());
        if (xfield != null) {
            if (xfield.isVolatile()) {
                getFrame().killAllLoads();
            }


            if (doRedundantLoadElimination()) {
                loadInstanceField(xfield, obj);

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Examples of edu.umd.cs.findbugs.ba.XField

    }


    @Override
    public void visitPUTFIELD(PUTFIELD obj) {
        if (doForwardSubstitution()) {
            XField xfield = Hierarchy.findXField(obj, getCPG());
            if (xfield != null) {
                storeInstanceField(xfield, obj, false);
                return;
            }

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Examples of edu.umd.cs.findbugs.ba.XField

            ValueNumber value = factory.getClassObjectValue(className);
            frame.pushValue(value);
            return;
        }


        XField xfield = Hierarchy.findXField(obj, getCPG());
        if (xfield != null) {
            if (xfield.isVolatile()) {
                getFrame().killAllLoads();
            }
            if (doRedundantLoadElimination()) {
                loadStaticField(xfield, obj);
                return;

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Examples of edu.umd.cs.findbugs.ba.XField


    @Override
    public void visitPUTSTATIC(PUTSTATIC obj) {
        if (doForwardSubstitution()) {


            XField xfield = Hierarchy.findXField(obj, getCPG());
            if (xfield != null) {
                storeStaticField(xfield, obj, false);
                return;
            }

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Examples of edu.umd.cs.findbugs.ba.XField

                } catch (DataflowAnalysisException e) {
                    throw new InvalidBytecodeException("stack underflow", methodGen, handle, e);
                }
            } else if (Hierarchy.isInnerClassAccess(obj, cpg)) {
                // Possible access of field via an inner-class access method
                XField xfield = loadedFieldSet.getField(handle);
                if (xfield != null) {
                    if (loadedFieldSet.instructionIsLoad(handle)) {
                        // Load via inner-class accessor
                        if (doRedundantLoadElimination()) {
                            if (xfield.isStatic()) {
                                loadStaticField(xfield, obj);
                            } else {
                                loadInstanceField(xfield, obj);
                            }
                            return;
                        }
                    } else {
                        // Store via inner-class accessor
                        if (doForwardSubstitution()) {
                            // Some inner class access store methods
                            // return the value stored.
                            boolean pushValue = !methodSig.endsWith(")V");


                            if (xfield.isStatic()) {
                                storeStaticField(xfield, obj, pushValue);
                            } else {
                                storeInstanceField(xfield, obj, pushValue);
                            }

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Examples of edu.umd.cs.findbugs.ba.XField

        return null;
    }


    public static FieldAnnotation findFieldAnnotationFromValueNumber(Method method, Location location, ValueNumber valueNumber,
            ValueNumberFrame vnaFrame) {
        XField field = ValueNumberSourceInfo.findXFieldFromValueNumber(method, location, valueNumber, vnaFrame);
        if (field == null) {
            return null;
        }
        return FieldAnnotation.fromXField(field);
    }

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Examples of edu.umd.cs.findbugs.ba.XField

        for (Map.Entry<String, SortedSet<String>> e : map.entrySet()) {
            Set<String> occursIn = e.getValue();
            if (occursIn.size() == 1) {
                continue;
            }
            XField field = definition.get(e.getKey());
            if (field == null) {
                continue;
            }
            Integer length = stringSize.get(e.getKey());
            int overhead = length * (occursIn.size() - 1);
            if (overhead < 3 * SIZE_OF_HUGE_CONSTANT) {
                continue;
            }
            String className = field.getClassName();


            BugInstance bug = new BugInstance(this, "HSC_HUGE_SHARED_STRING_CONSTANT",
                    overhead > 20 * SIZE_OF_HUGE_CONSTANT ? HIGH_PRIORITY
                            : (overhead > 8 * SIZE_OF_HUGE_CONSTANT ? NORMAL_PRIORITY : LOW_PRIORITY)).addClass(className)
                            .addField(field).addInt(length).addInt(occursIn.size()).describe(IntAnnotation.INT_OCCURRENCES);

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Examples of edu.umd.cs.findbugs.ba.XField

            System.out.println("  isJSPClass: " + isJSPClass);
        }
        if (isSerializable && !sawReadObject && !sawReadResolve && seenTransientField && !superClassHasReadObject) {
            for (Map.Entry<XField, Integer> e : transientFieldsUpdates.entrySet()) {


                XField fieldX = e.getKey();
                int priority = NORMAL_PRIORITY;
                if (transientFieldsSetInConstructor.contains(e.getKey())) {
                    priority--;
                }


                if (isGUIClass) {
                    priority++;
                }
                if (isEjbImplClass) {
                    priority++;
                }
                if (isJSPClass) {
                    priority++;
                }
                if (e.getValue() < 3) {
                    priority++;
                }
                if (transientFieldsSetToDefaultValueInConstructor.contains(e.getKey())) {
                    priority++;
                }
                if (obj.isAbstract()) {
                    priority++;
                    if (priority < Priorities.LOW_PRIORITY) {
                        priority = Priorities.LOW_PRIORITY;
                    }
                }


                try {
                    double isSerializable = DeepSubtypeAnalysis.isDeepSerializable(fieldX.getSignature());
                    if (isSerializable < 0.6) {
                        priority++;
                    }
                } catch (ClassNotFoundException e1) {
                    // ignore it

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Examples of edu.umd.cs.findbugs.ba.XField

    }


    @Override
    public void sawOpcode(int seen) {
        if (seen == PUTFIELD) {
            XField xField = getXFieldOperand();
            if (xField != null && xField.getClassDescriptor().equals(getClassDescriptor())) {
                Item first = stack.getStackItem(0);


                boolean isPutOfDefaultValue = first.isNull(); // huh?? ||
                // first.isInitialParameter();
                if (!isPutOfDefaultValue && first.getConstant() != null) {
                    Object constant = first.getConstant();
                    if (constant instanceof Number && ((Number) constant).intValue() == 0 || constant.equals(Boolean.FALSE)) {
                        isPutOfDefaultValue = true;
                    }
                }


                if (isPutOfDefaultValue) {
                    if (getMethodName().equals("<init>")) {
                        transientFieldsSetToDefaultValueInConstructor.add(xField);
                    }
                } else {
                    String nameOfField = getNameConstantOperand();


                    if (transientFieldsUpdates.containsKey(xField)) {
                        if (getMethodName().equals("<init>")) {
                            transientFieldsSetInConstructor.add(xField);
                        } else {
                            transientFieldsUpdates.put(xField, transientFieldsUpdates.get(xField) + 1);
                        }
                    } else if (fieldsThatMightBeAProblem.containsKey(nameOfField)) {
                        try {


                            JavaClass classStored = first.getJavaClass();
                            if (classStored == null) {
                                return;
                            }
                            double isSerializable = DeepSubtypeAnalysis.isDeepSerializable(classStored);
                            if (isSerializable <= 0.2) {
                                XField f = fieldsThatMightBeAProblem.get(nameOfField);


                                String sig = f.getSignature();
                                // System.out.println("Field signature: " +
                                // sig);
                                // System.out.println("Class stored: " +
                                // classStored.getClassName());
                                String genSig = "L" + classStored.getClassName().replace('.', '/') + ";";

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