Examples with JavaClass org.apache.bcel.classfile.JavaClass used on opensource projects

Example 36 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project fb-contrib by mebigfatguy.

the class WeakExceptionMessaging method checkForWEM.

private void checkForWEM() throws ClassNotFoundException {
    if (stack.getStackDepth() == 0) {
        return;
    }
    OpcodeStack.Item item = stack.getStackItem(0);
    if (item.getUserValue() == null) {
        return;
    }
    JavaClass exClass = item.getJavaClass();
    if ((exClass == null) || !ignorableExceptionTypes.contains(exClass.getClassName())) {
        bugReporter.reportBug(new BugInstance(this, BugType.WEM_WEAK_EXCEPTION_MESSAGING.name(), LOW_PRIORITY).addClass(this).addMethod(this).addSourceLine(this));
    }
}

Example 37 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project fb-contrib by mebigfatguy.

the class OverlyConcreteParameter method buildParameterDefiners.

/**
 * builds a map of method information for each method of each interface that each parameter implements of this method
 *
 * @return a map by parameter id of all the method signatures that interfaces of that parameter implements
 *
 * @throws ClassNotFoundException
 *             if the class can't be loaded
 */
private boolean buildParameterDefiners() throws ClassNotFoundException {
    Method m = getMethod();
    Type[] parms = m.getArgumentTypes();
    if (parms.length == 0) {
        return false;
    }
    ParameterAnnotationEntry[] annotations = m.getParameterAnnotationEntries();
    boolean hasPossiblyOverlyConcreteParm = false;
    for (int i = 0; i < parms.length; i++) {
        if ((annotations.length <= i) || (annotations[i] == null) || (annotations[i].getAnnotationEntries().length == 0)) {
            String parm = parms[i].getSignature();
            if (parm.startsWith(Values.SIG_QUALIFIED_CLASS_PREFIX)) {
                String clsName = SignatureUtils.stripSignature(parm);
                if (clsName.startsWith("java.lang.")) {
                    continue;
                }
                JavaClass clz = Repository.lookupClass(clsName);
                if (clz.isClass() && (!clz.isAbstract())) {
                    Map<JavaClass, List<MethodInfo>> definers = getClassDefiners(clz);
                    if (!definers.isEmpty()) {
                        parameterDefiners.put(Integer.valueOf(i + (methodIsStatic ? 0 : 1)), definers);
                        hasPossiblyOverlyConcreteParm = true;
                    }
                }
            }
        }
    }
    return hasPossiblyOverlyConcreteParm;
}

Example 38 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project fb-contrib by mebigfatguy.

the class OverlyConcreteParameter method removeUselessDefiners.

/**
 * parses through the interface that 'may' define a parameter defined by reg, and look to see if we can rule it out, because a method is called on the
 * object that can't be satisfied by the interface, if so remove that candidate interface.
 *
 * @param reg
 *            the parameter register number to look at
 */
private void removeUselessDefiners(final int reg) {
    Map<JavaClass, List<MethodInfo>> definers = parameterDefiners.get(Integer.valueOf(reg));
    if (CollectionUtils.isEmpty(definers)) {
        return;
    }
    String methodSig = getSigConstantOperand();
    String methodName = getNameConstantOperand();
    MethodInfo methodInfo = new MethodInfo(methodName, methodSig);
    Iterator<List<MethodInfo>> it = definers.values().iterator();
    while (it.hasNext()) {
        boolean methodDefined = false;
        List<MethodInfo> methodSigs = it.next();
        for (MethodInfo mi : methodSigs) {
            if (methodInfo.equals(mi)) {
                methodDefined = true;
                String[] exceptions = mi.getMethodExceptions();
                if (exceptions != null) {
                    for (String ex : exceptions) {
                        if (!isExceptionHandled(ex)) {
                            methodDefined = false;
                            break;
                        }
                    }
                }
                break;
            }
        }
        if (!methodDefined) {
            it.remove();
        }
    }
    if (definers.isEmpty()) {
        parameterDefiners.remove(Integer.valueOf(reg));
    }
}

Example 39 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project fb-contrib by mebigfatguy.

the class ParallelLists method visitClassContext.

@Override
public void visitClassContext(final ClassContext classContext) {
    try {
        JavaClass cls = classContext.getJavaClass();
        listFields = new HashSet<>();
        Field[] flds = cls.getFields();
        for (Field f : flds) {
            String sig = f.getSignature();
            if (sig.startsWith(Values.SIG_QUALIFIED_CLASS_PREFIX)) {
                sig = SignatureUtils.trimSignature(sig);
                if (sig.startsWith("java/util/") && sig.endsWith("List")) {
                    listFields.add(f.getName());
                }
            } else if (sig.startsWith(Values.SIG_ARRAY_PREFIX) && !sig.startsWith(Values.SIG_ARRAY_OF_ARRAYS_PREFIX)) {
                listFields.add(f.getName());
            }
        }
        if (!listFields.isEmpty()) {
            stack = new OpcodeStack();
            indexToFieldMap = new HashMap<>();
            super.visitClassContext(classContext);
        }
    } finally {
        stack = null;
        indexToFieldMap = null;
    }
}

Example 40 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project fb-contrib by mebigfatguy.

the class PartiallyConstructedObjectAccess method reportChainedMethods.

private void reportChainedMethods() {
    Set<Method> checkedMethods = new HashSet<>();
    JavaClass cls = getClassContext().getJavaClass();
    for (Map.Entry<Method, Map<Method, SourceLineAnnotation>> entry : methodToCalledMethods.entrySet()) {
        Method m = entry.getKey();
        if (Values.CONSTRUCTOR.equals(m.getName())) {
            checkedMethods.clear();
            Deque<SourceLineAnnotation> slas = foundPrivateInChain(m, checkedMethods);
            if (slas != null) {
                BugInstance bi = new BugInstance(this, BugType.PCOA_PARTIALLY_CONSTRUCTED_OBJECT_ACCESS.name(), LOW_PRIORITY).addClass(cls).addMethod(cls, m);
                for (SourceLineAnnotation sla : slas) {
                    bi.addSourceLine(sla);
                }
                bugReporter.reportBug(bi);
            }
        }
    }
}