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

Example 6 with Field

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

the class PossibleMemoryBloat method parseFields.

private void parseFields(ClassContext classContext) {
    JavaClass cls = classContext.getJavaClass();
    Field[] fields = cls.getFields();
    for (Field f : fields) {
        String sig = f.getSignature();
        if (f.isStatic()) {
            if (bloatableSigs.contains(sig)) {
                bloatableCandidates.put(XFactory.createXField(cls.getClassName(), f.getName(), f.getSignature(), f.isStatic()), FieldAnnotation.fromBCELField(cls, f));
            }
        } else if ("Ljava/lang/ThreadLocal;".equals(sig)) {
            threadLocalNonStaticFields.add(FieldAnnotation.fromBCELField(cls, f));
        }
    }
}

Example 7 with Field

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

the class SillynessPotPourri method looksLikeStaticFieldValue.

private boolean looksLikeStaticFieldValue(String constant) {
    if (staticConstants == null) {
        staticConstants = new HashSet<>();
        Field[] fields = getClassContext().getJavaClass().getFields();
        for (Field f : fields) {
            if (((f.getAccessFlags() & (Const.ACC_FINAL | Const.ACC_STATIC)) == (Const.ACC_FINAL | Const.ACC_STATIC)) && Values.SIG_JAVA_LANG_STRING.equals(f.getSignature())) {
                ConstantValue cv = f.getConstantValue();
                if (cv != null) {
                    int cvIndex = cv.getConstantValueIndex();
                    staticConstants.add(getConstantPool().getConstantString(cvIndex, Const.CONSTANT_String));
                }
            }
        }
    }
    return staticConstants.contains(constant);
}

Example 8 with Field

use of org.apache.bcel.classfile.Field 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 9 with Field

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

the class PoorMansEnum method visitClassContext.

@Override
public void visitClassContext(ClassContext classContext) {
    try {
        JavaClass cls = classContext.getJavaClass();
        if (cls.getMajor() >= Const.MAJOR_1_5) {
            fieldValues = new HashMap<>();
            nameToField = new HashMap<>();
            for (Field f : cls.getFields()) {
                if (f.isPrivate() && !f.isSynthetic()) {
                    String fieldName = f.getName();
                    // preallocating a set per field is just a waste, so just insert the empty set as a place holder
                    fieldValues.put(fieldName, Collections.emptySet());
                    nameToField.put(fieldName, f);
                }
            }
            if (!fieldValues.isEmpty()) {
                stack = new OpcodeStack();
                firstFieldUse = new HashMap<>();
                try {
                    super.visitClassContext(classContext);
                    for (Map.Entry<String, Set<Object>> fieldInfo : fieldValues.entrySet()) {
                        Set<Object> values = fieldInfo.getValue();
                        if (values.size() >= 3) {
                            String fieldName = fieldInfo.getKey();
                            bugReporter.reportBug(new BugInstance(this, BugType.PME_POOR_MANS_ENUM.name(), NORMAL_PRIORITY).addClass(this).addField(XFactory.createXField(cls, nameToField.get(fieldName))).addSourceLine(firstFieldUse.get(fieldName)));
                        }
                    }
                } catch (StopOpcodeParsingException e) {
                // no fields left
                }
            }
        }
    } finally {
        fieldValues = null;
        nameToField = null;
        firstFieldUse = null;
        stack = null;
    }
}

Example 10 with Field

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

the class LoggerOddities method isNonPrivateLogField.

/**
 * looks to see if this field is a logger, and declared non privately
 *
 * @param fieldClsName
 *            the owning class type of the field
 * @param fieldName
 *            the name of the field
 * @param fieldSig
 *            the signature of the field
 * @return if the field is a logger and not private
 */
private boolean isNonPrivateLogField(String fieldClsName, String fieldName, String fieldSig) {
    String fieldType = SignatureUtils.trimSignature(fieldSig);
    if (!SLF4J_LOGGER.equals(fieldType) && !COMMONS_LOGGER.equals(fieldType) && !LOG4J_LOGGER.equals(fieldType) && !LOG4J2_LOGGER.equals(fieldType)) {
        return false;
    }
    JavaClass cls = getClassContext().getJavaClass();
    if (!cls.getClassName().equals(fieldClsName.replace('/', '.'))) {
        return false;
    }
    for (Field f : getClassContext().getJavaClass().getFields()) {
        if (f.getName().equals(fieldName)) {
            return !f.isPrivate();
        }
    }
    return true;
}