private void parseFieldAttrBands()

in src/main/java/org/apache/commons/compress/harmony/unpack200/ClassBands.java [747:853]
94 lines of code
25 McCabe index (conditional complexity)

    private void parseFieldAttrBands(final InputStream in) throws IOException, Pack200Exception {
        fieldFlags = parseFlags("field_flags", in, classFieldCount, Codec.UNSIGNED5, options.hasFieldFlagsHi());
        final int fieldAttrCount = SegmentUtils.countBit16(fieldFlags);
        final int[] fieldAttrCounts = decodeBandInt("field_attr_count", in, Codec.UNSIGNED5, fieldAttrCount);
        final int[][] fieldAttrIndexes = decodeBandInt("field_attr_indexes", in, Codec.UNSIGNED5, fieldAttrCounts);
        final int callCount = getCallCount(fieldAttrIndexes, fieldFlags, AttributeLayout.CONTEXT_FIELD);
        final int[] fieldAttrCalls = decodeBandInt("field_attr_calls", in, Codec.UNSIGNED5, callCount);

        // Assign empty field attributes
        fieldAttributes = new ArrayList[classCount][];
        for (int i = 0; i < classCount; i++) {
            fieldAttributes[i] = new ArrayList[fieldFlags[i].length];
            for (int j = 0; j < fieldFlags[i].length; j++) {
                fieldAttributes[i][j] = new ArrayList<>();
            }
        }

        final AttributeLayout constantValueLayout = attrMap.getAttributeLayout("ConstantValue", AttributeLayout.CONTEXT_FIELD);
        final int constantCount = SegmentUtils.countMatches(fieldFlags, constantValueLayout);
        final int[] field_constantValue_KQ = decodeBandInt("field_ConstantValue_KQ", in, Codec.UNSIGNED5, constantCount);
        int constantValueIndex = 0;

        final AttributeLayout signatureLayout = attrMap.getAttributeLayout(AttributeLayout.ATTRIBUTE_SIGNATURE, AttributeLayout.CONTEXT_FIELD);
        final int signatureCount = SegmentUtils.countMatches(fieldFlags, signatureLayout);
        final int[] fieldSignatureRS = decodeBandInt("field_Signature_RS", in, Codec.UNSIGNED5, signatureCount);
        int signatureIndex = 0;

        final AttributeLayout deprecatedLayout = attrMap.getAttributeLayout(AttributeLayout.ATTRIBUTE_DEPRECATED, AttributeLayout.CONTEXT_FIELD);

        for (int i = 0; i < classCount; i++) {
            for (int j = 0; j < fieldFlags[i].length; j++) {
                final long flag = fieldFlags[i][j];
                if (deprecatedLayout.matches(flag)) {
                    fieldAttributes[i][j].add(new DeprecatedAttribute());
                }
                if (constantValueLayout.matches(flag)) {
                    // we've got a value to read
                    final long result = field_constantValue_KQ[constantValueIndex];
                    final String desc = fieldDescr[i][j];
                    final int colon = desc.indexOf(':');
                    String type = desc.substring(colon + 1);
                    if (type.equals("B") || type.equals("S") || type.equals("C") || type.equals("Z")) {
                        type = "I";
                    }
                    final ClassFileEntry value = constantValueLayout.getValue(result, type, cpBands.getConstantPool());
                    fieldAttributes[i][j].add(new ConstantValueAttribute(value));
                    constantValueIndex++;
                }
                if (signatureLayout.matches(flag)) {
                    // we've got a signature attribute
                    final long result = fieldSignatureRS[signatureIndex];
                    final String desc = fieldDescr[i][j];
                    final int colon = desc.indexOf(':');
                    final String type = desc.substring(colon + 1);
                    final CPUTF8 value = (CPUTF8) signatureLayout.getValue(result, type, cpBands.getConstantPool());
                    fieldAttributes[i][j].add(new SignatureAttribute(value));
                    signatureIndex++;
                }
            }
        }

        // Parse non-predefined attribute bands
        int backwardsCallIndex = parseFieldMetadataBands(in, fieldAttrCalls);
        final int limit = options.hasFieldFlagsHi() ? 62 : 31;
        final AttributeLayout[] otherLayouts = new AttributeLayout[limit + 1];
        final int[] counts = new int[limit + 1];
        final List<Attribute>[] otherAttributes = new List[limit + 1];
        for (int i = 0; i < limit; i++) {
            final AttributeLayout layout = attrMap.getAttributeLayout(i, AttributeLayout.CONTEXT_FIELD);
            if (layout != null && !layout.isDefaultLayout()) {
                otherLayouts[i] = layout;
                counts[i] = SegmentUtils.countMatches(fieldFlags, layout);
            }
        }
        for (int i = 0; i < counts.length; i++) {
            if (counts[i] > 0) {
                final NewAttributeBands bands = attrMap.getAttributeBands(otherLayouts[i]);
                otherAttributes[i] = bands.parseAttributes(in, counts[i]);
                final int numBackwardsCallables = otherLayouts[i].numBackwardsCallables();
                if (numBackwardsCallables > 0) {
                    final int[] backwardsCalls = new int[numBackwardsCallables];
                    System.arraycopy(fieldAttrCalls, backwardsCallIndex, backwardsCalls, 0, numBackwardsCallables);
                    bands.setBackwardsCalls(backwardsCalls);
                    backwardsCallIndex += numBackwardsCallables;
                }
            }
        }

        // Non-predefined attributes
        for (int i = 0; i < classCount; i++) {
            for (int j = 0; j < fieldFlags[i].length; j++) {
                final long flag = fieldFlags[i][j];
                int othersAddedAtStart = 0;
                for (int k = 0; k < otherLayouts.length; k++) {
                    if (otherLayouts[k] != null && otherLayouts[k].matches(flag)) {
                        // Add the next attribute
                        if (otherLayouts[k].getIndex() < 15) {
                            fieldAttributes[i][j].add(othersAddedAtStart++, otherAttributes[k].get(0));
                        } else {
                            fieldAttributes[i][j].add(otherAttributes[k].get(0));
                        }
                        otherAttributes[k].remove(0);
                    }
                }
            }
        }
    }