--- /dev/null
+/*
+ * Copyright (c) 2019 PANTHEON.tech, s.r.o. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.cluster.datastore.node.utils.stream;
+
+import static com.google.common.base.Verify.verifyNotNull;
+import static java.util.Objects.requireNonNull;
+import static org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter.UNKNOWN_SIZE;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableList.Builder;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.util.concurrent.UncheckedExecutionException;
+import java.io.DataInput;
+import java.io.IOException;
+import java.io.StringReader;
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.ExecutionException;
+import javax.xml.transform.dom.DOMSource;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.controller.cluster.datastore.node.utils.QNameFactory;
+import org.opendaylight.yangtools.rfc8528.data.api.MountPointIdentifier;
+import org.opendaylight.yangtools.util.xml.UntrustedXML;
+import org.opendaylight.yangtools.yang.common.Empty;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.common.QNameModule;
+import org.opendaylight.yangtools.yang.common.Uint16;
+import org.opendaylight.yangtools.yang.common.Uint32;
+import org.opendaylight.yangtools.yang.common.Uint64;
+import org.opendaylight.yangtools.yang.common.Uint8;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+/**
+ * Abstract base class for NormalizedNodeDataInput based on {@link MagnesiumNode}, {@link MagnesiumPathArgument} and
+ * {@link MagnesiumValue}.
+ */
+abstract class AbstractMagnesiumDataInput extends AbstractNormalizedNodeDataInput {
+ private static final Logger LOG = LoggerFactory.getLogger(AbstractMagnesiumDataInput.class);
+
+ // Known singleton objects
+ private static final @NonNull Byte INT8_0 = 0;
+ private static final @NonNull Short INT16_0 = 0;
+ private static final @NonNull Integer INT32_0 = 0;
+ private static final @NonNull Long INT64_0 = 0L;
+ private static final byte @NonNull[] BINARY_0 = new byte[0];
+ private static final @NonNull AugmentationIdentifier EMPTY_AID = AugmentationIdentifier.create(ImmutableSet.of());
+
+ // FIXME: these should be available as constants
+ private static final @NonNull Uint8 UINT8_0 = Uint8.valueOf(0);
+ private static final @NonNull Uint16 UINT16_0 = Uint16.valueOf(0);
+ private static final @NonNull Uint32 UINT32_0 = Uint32.valueOf(0);
+ private static final @NonNull Uint64 UINT64_0 = Uint64.valueOf(0);
+
+ private final List<AugmentationIdentifier> codedAugments = new ArrayList<>();
+ private final List<NodeIdentifier> codedNodeIdentifiers = new ArrayList<>();
+ private final List<QNameModule> codedModules = new ArrayList<>();
+ private final List<String> codedStrings = new ArrayList<>();
+
+ AbstractMagnesiumDataInput(final DataInput input) {
+ super(input);
+ }
+
+ @Override
+ public final void streamNormalizedNode(final NormalizedNodeStreamWriter writer) throws IOException {
+ streamNormalizedNode(requireNonNull(writer), null, input.readByte());
+ }
+
+ private void streamNormalizedNode(final NormalizedNodeStreamWriter writer, final PathArgument parent,
+ final byte nodeHeader) throws IOException {
+ switch (nodeHeader & MagnesiumNode.TYPE_MASK) {
+ case MagnesiumNode.NODE_LEAF:
+ streamLeaf(writer, parent, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_CONTAINER:
+ streamContainer(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_LIST:
+ streamList(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_MAP:
+ streamMap(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_MAP_ORDERED:
+ streamMapOrdered(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_LEAFSET:
+ streamLeafset(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_LEAFSET_ORDERED:
+ streamLeafsetOrdered(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_CHOICE:
+ streamChoice(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_AUGMENTATION:
+ streamAugmentation(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_ANYXML:
+ streamAnyxml(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_ANYXML_MODELED:
+ streamAnyxmlModeled(writer, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_LIST_ENTRY:
+ streamListEntry(writer, parent, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_LEAFSET_ENTRY:
+ streamLeafsetEntry(writer, parent, nodeHeader);
+ break;
+ case MagnesiumNode.NODE_MAP_ENTRY:
+ streamMapEntry(writer, parent, nodeHeader);
+ break;
+ default:
+ throw new InvalidNormalizedNodeStreamException("Unexpected node header " + nodeHeader);
+ }
+ }
+
+ private void streamAnyxml(final NormalizedNodeStreamWriter writer, final byte nodeHeader) throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ LOG.trace("Streaming anyxml node {}", identifier);
+ writer.startAnyxmlNode(identifier);
+ writer.domSourceValue(readDOMSource());
+ writer.endNode();
+ }
+
+ private void streamAnyxmlModeled(final NormalizedNodeStreamWriter writer, final byte nodeHeader)
+ throws IOException {
+ // TODO: decide how to deal with these
+ throw new UnsupportedOperationException("Reading YANG-modeled anyxml was never supported");
+ }
+
+ private void streamAugmentation(final NormalizedNodeStreamWriter writer, final byte nodeHeader) throws IOException {
+ final AugmentationIdentifier augIdentifier = decodeAugmentationIdentifier(nodeHeader);
+ LOG.trace("Streaming augmentation node {}", augIdentifier);
+ writer.startAugmentationNode(augIdentifier);
+ commonStreamContainer(writer, augIdentifier);
+ }
+
+ private void streamChoice(final NormalizedNodeStreamWriter writer, final byte nodeHeader) throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ LOG.trace("Streaming choice node {}", identifier);
+ writer.startChoiceNode(identifier, UNKNOWN_SIZE);
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void streamContainer(final NormalizedNodeStreamWriter writer, final byte nodeHeader) throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ LOG.trace("Streaming container node {}", identifier);
+ writer.startContainerNode(identifier, UNKNOWN_SIZE);
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void streamLeaf(final NormalizedNodeStreamWriter writer, final PathArgument parent, final byte nodeHeader)
+ throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ LOG.trace("Streaming leaf node {}", identifier);
+ writer.startLeafNode(identifier);
+
+ final Object value;
+ if ((nodeHeader & MagnesiumNode.PREDICATE_ONE) == MagnesiumNode.PREDICATE_ONE) {
+ if (!(parent instanceof NodeIdentifierWithPredicates)) {
+ throw new InvalidNormalizedNodeStreamException("Invalid predicate leaf " + identifier + " in parent "
+ + parent);
+ }
+
+ value = ((NodeIdentifierWithPredicates) parent).getValue(identifier.getNodeType());
+ if (value == null) {
+ throw new InvalidNormalizedNodeStreamException("Failed to find predicate leaf " + identifier
+ + " in parent " + parent);
+ }
+ } else {
+ value = readLeafValue();
+ }
+
+ writer.scalarValue(value);
+ writer.endNode();
+ }
+
+ private void streamLeafset(final NormalizedNodeStreamWriter writer, final byte nodeHeader) throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ LOG.trace("Streaming leaf set node {}", identifier);
+ writer.startLeafSet(identifier, UNKNOWN_SIZE);
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void streamLeafsetOrdered(final NormalizedNodeStreamWriter writer, final byte nodeHeader)
+ throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ LOG.trace("Streaming ordered leaf set node {}", identifier);
+ writer.startOrderedLeafSet(identifier, UNKNOWN_SIZE);
+
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void streamLeafsetEntry(final NormalizedNodeStreamWriter writer, final PathArgument parent,
+ final byte nodeHeader) throws IOException {
+ final NodeIdentifier nodeId = decodeNodeIdentifier(nodeHeader, parent);
+ final Object value = readLeafValue();
+ final NodeWithValue<Object> leafIdentifier = new NodeWithValue<>(nodeId.getNodeType(), value);
+ LOG.trace("Streaming leaf set entry node {}", leafIdentifier);
+ writer.startLeafSetEntryNode(leafIdentifier);
+ writer.scalarValue(value);
+ writer.endNode();
+ }
+
+ private void streamList(final NormalizedNodeStreamWriter writer, final byte nodeHeader) throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ writer.startUnkeyedList(identifier, UNKNOWN_SIZE);
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void streamListEntry(final NormalizedNodeStreamWriter writer, final PathArgument parent,
+ final byte nodeHeader) throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader, parent);
+ LOG.trace("Streaming unkeyed list item node {}", identifier);
+ writer.startUnkeyedListItem(identifier, UNKNOWN_SIZE);
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void streamMap(final NormalizedNodeStreamWriter writer, final byte nodeHeader) throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ LOG.trace("Streaming map node {}", identifier);
+ writer.startMapNode(identifier, UNKNOWN_SIZE);
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void streamMapOrdered(final NormalizedNodeStreamWriter writer, final byte nodeHeader) throws IOException {
+ final NodeIdentifier identifier = decodeNodeIdentifier(nodeHeader);
+ LOG.trace("Streaming ordered map node {}", identifier);
+ writer.startOrderedMapNode(identifier, UNKNOWN_SIZE);
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void streamMapEntry(final NormalizedNodeStreamWriter writer, final PathArgument parent,
+ final byte nodeHeader) throws IOException {
+ final NodeIdentifier nodeId = decodeNodeIdentifier(nodeHeader, parent);
+
+ final int size;
+ switch (nodeHeader & MagnesiumNode.PREDICATE_MASK) {
+ case MagnesiumNode.PREDICATE_ZERO:
+ size = 0;
+ break;
+ case MagnesiumNode.PREDICATE_ONE:
+ size = 1;
+ break;
+ case MagnesiumNode.PREDICATE_1B:
+ size = input.readUnsignedByte();
+ break;
+ case MagnesiumNode.PREDICATE_4B:
+ size = input.readInt();
+ break;
+ default:
+ // ISE on purpose: this should never ever happen
+ throw new IllegalStateException("Failed to decode NodeIdentifierWithPredicates size from header "
+ + nodeHeader);
+ }
+
+ final NodeIdentifierWithPredicates identifier = readNodeIdentifierWithPredicates(nodeId.getNodeType(), size);
+ LOG.trace("Streaming map entry node {}", identifier);
+ writer.startMapEntryNode(identifier, UNKNOWN_SIZE);
+ commonStreamContainer(writer, identifier);
+ }
+
+ private void commonStreamContainer(final NormalizedNodeStreamWriter writer, final PathArgument parent)
+ throws IOException {
+ for (byte nodeType = input.readByte(); nodeType != MagnesiumNode.NODE_END; nodeType = input.readByte()) {
+ streamNormalizedNode(writer, parent, nodeType);
+ }
+ writer.endNode();
+ }
+
+ private @NonNull NodeIdentifier decodeNodeIdentifier() throws IOException {
+ final QNameModule module = decodeQNameModule();
+ final String localName = readRefString();
+ final NodeIdentifier nodeId;
+ try {
+ nodeId = QNameFactory.getNodeIdentifier(module, localName);
+ } catch (ExecutionException e) {
+ throw new InvalidNormalizedNodeStreamException("Illegal QName module=" + module + " localName="
+ + localName, e);
+ }
+
+ codedNodeIdentifiers.add(nodeId);
+ return nodeId;
+ }
+
+ private NodeIdentifier decodeNodeIdentifier(final byte nodeHeader) throws IOException {
+ return decodeNodeIdentifier(nodeHeader, null);
+ }
+
+ private NodeIdentifier decodeNodeIdentifier(final byte nodeHeader, final PathArgument parent) throws IOException {
+ final int index;
+ switch (nodeHeader & MagnesiumNode.ADDR_MASK) {
+ case MagnesiumNode.ADDR_DEFINE:
+ return readNodeIdentifier();
+ case MagnesiumNode.ADDR_LOOKUP_1B:
+ index = input.readUnsignedByte();
+ break;
+ case MagnesiumNode.ADDR_LOOKUP_4B:
+ index = input.readInt();
+ break;
+ case MagnesiumNode.ADDR_PARENT:
+ if (parent instanceof NodeIdentifier) {
+ return (NodeIdentifier) parent;
+ }
+ throw new InvalidNormalizedNodeStreamException("Invalid node identifier reference to parent " + parent);
+ default:
+ throw new InvalidNormalizedNodeStreamException("Unexpected node identifier addressing in header "
+ + nodeHeader);
+ }
+
+ try {
+ return codedNodeIdentifiers.get(index);
+ } catch (IndexOutOfBoundsException e) {
+ throw new InvalidNormalizedNodeStreamException("Invalid QName reference " + index, e);
+ }
+ }
+
+ private AugmentationIdentifier decodeAugmentationIdentifier(final byte nodeHeader) throws IOException {
+ final int index;
+ switch (nodeHeader & MagnesiumNode.ADDR_MASK) {
+ case MagnesiumNode.ADDR_DEFINE:
+ return readAugmentationIdentifier();
+ case MagnesiumNode.ADDR_LOOKUP_1B:
+ index = input.readUnsignedByte();
+ break;
+ case MagnesiumNode.ADDR_LOOKUP_4B:
+ index = input.readInt();
+ break;
+ default:
+ throw new InvalidNormalizedNodeStreamException(
+ "Unexpected augmentation identifier addressing in header " + nodeHeader);
+ }
+
+ try {
+ return codedAugments.get(index);
+ } catch (IndexOutOfBoundsException e) {
+ throw new InvalidNormalizedNodeStreamException("Invalid augmentation identifier reference " + index, e);
+ }
+ }
+
+ @Override
+ public final YangInstanceIdentifier readYangInstanceIdentifier() throws IOException {
+ final byte type = input.readByte();
+ if (type == MagnesiumValue.YIID) {
+ return readYangInstanceIdentifier(input.readInt());
+ } else if (type >= MagnesiumValue.YIID_0) {
+ // Note 'byte' is range limited, so it is always '&& type <= MagnesiumValue.YIID_31'
+ return readYangInstanceIdentifier(type - MagnesiumValue.YIID_0);
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Unexpected YangInstanceIdentifier type " + type);
+ }
+ }
+
+ private @NonNull YangInstanceIdentifier readYangInstanceIdentifier(final int size) throws IOException {
+ if (size > 0) {
+ final Builder<PathArgument> builder = ImmutableList.builderWithExpectedSize(size);
+ for (int i = 0; i < size; ++i) {
+ builder.add(readPathArgument());
+ }
+ return YangInstanceIdentifier.create(builder.build());
+ } else if (size == 0) {
+ return YangInstanceIdentifier.EMPTY;
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Invalid YangInstanceIdentifier size " + size);
+ }
+ }
+
+ @Override
+ public final QName readQName() throws IOException {
+ final byte type = input.readByte();
+ switch (type) {
+ case MagnesiumValue.QNAME:
+ return decodeQName();
+ case MagnesiumValue.QNAME_REF_1B:
+ return decodeQNameRef1();
+ case MagnesiumValue.QNAME_REF_2B:
+ return decodeQNameRef2();
+ case MagnesiumValue.QNAME_REF_4B:
+ return decodeQNameRef4();
+ default:
+ throw new InvalidNormalizedNodeStreamException("Unexpected QName type " + type);
+ }
+ }
+
+ @Override
+ public final PathArgument readPathArgument() throws IOException {
+ final byte header = input.readByte();
+ switch (header & MagnesiumPathArgument.TYPE_MASK) {
+ case MagnesiumPathArgument.AUGMENTATION_IDENTIFIER:
+ return readAugmentationIdentifier(header);
+ case MagnesiumPathArgument.NODE_IDENTIFIER:
+ verifyPathIdentifierOnly(header);
+ return readNodeIdentifier(header);
+ case MagnesiumPathArgument.NODE_IDENTIFIER_WITH_PREDICATES:
+ return readNodeIdentifierWithPredicates(header);
+ case MagnesiumPathArgument.NODE_WITH_VALUE:
+ verifyPathIdentifierOnly(header);
+ return readNodeWithValue(header);
+ case MagnesiumPathArgument.MOUNTPOINT_IDENTIFIER:
+ verifyPathIdentifierOnly(header);
+ return MountPointIdentifier.create(readNodeIdentifier(header).getNodeType());
+ default:
+ throw new InvalidNormalizedNodeStreamException("Unexpected PathArgument header " + header);
+ }
+ }
+
+ private AugmentationIdentifier readAugmentationIdentifier() throws IOException {
+ final AugmentationIdentifier result = readAugmentationIdentifier(input.readInt());
+ codedAugments.add(result);
+ return result;
+ }
+
+ private AugmentationIdentifier readAugmentationIdentifier(final byte header) throws IOException {
+ final int count = header & MagnesiumPathArgument.AID_COUNT_MASK;
+ switch (count) {
+ case MagnesiumPathArgument.AID_COUNT_1B:
+ return readAugmentationIdentifier(input.readUnsignedByte());
+ case MagnesiumPathArgument.AID_COUNT_2B:
+ return readAugmentationIdentifier(input.readUnsignedShort());
+ case MagnesiumPathArgument.AID_COUNT_4B:
+ return readAugmentationIdentifier(input.readInt());
+ default:
+ return readAugmentationIdentifier(count >>> MagnesiumPathArgument.AID_COUNT_SHIFT);
+ }
+ }
+
+ private AugmentationIdentifier readAugmentationIdentifier(final int size) throws IOException {
+ if (size > 0) {
+ final List<QName> qnames = new ArrayList<>(size);
+ for (int i = 0; i < size; ++i) {
+ qnames.add(readQName());
+ }
+ return AugmentationIdentifier.create(ImmutableSet.copyOf(qnames));
+ } else if (size == 0) {
+ return EMPTY_AID;
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Invalid augmentation identifier size " + size);
+ }
+ }
+
+ private NodeIdentifier readNodeIdentifier() throws IOException {
+ return decodeNodeIdentifier();
+ }
+
+ private NodeIdentifier readNodeIdentifier(final byte header) throws IOException {
+ switch (header & MagnesiumPathArgument.QNAME_MASK) {
+ case MagnesiumPathArgument.QNAME_DEF:
+ return decodeNodeIdentifier();
+ case MagnesiumPathArgument.QNAME_REF_1B:
+ return decodeNodeIdentifierRef1();
+ case MagnesiumPathArgument.QNAME_REF_2B:
+ return decodeNodeIdentifierRef2();
+ case MagnesiumPathArgument.QNAME_REF_4B:
+ return decodeNodeIdentifierRef4();
+ default:
+ throw new InvalidNormalizedNodeStreamException("Invalid QName coding in " + header);
+ }
+ }
+
+ private NodeIdentifierWithPredicates readNodeIdentifierWithPredicates(final byte header) throws IOException {
+ final QName qname = readNodeIdentifier(header).getNodeType();
+ switch (header & MagnesiumPathArgument.SIZE_MASK) {
+ case MagnesiumPathArgument.SIZE_1B:
+ return readNodeIdentifierWithPredicates(qname, input.readUnsignedByte());
+ case MagnesiumPathArgument.SIZE_2B:
+ return readNodeIdentifierWithPredicates(qname, input.readUnsignedShort());
+ case MagnesiumPathArgument.SIZE_4B:
+ return readNodeIdentifierWithPredicates(qname, input.readInt());
+ default:
+ return readNodeIdentifierWithPredicates(qname, header >>> MagnesiumPathArgument.SIZE_SHIFT);
+ }
+ }
+
+ private NodeIdentifierWithPredicates readNodeIdentifierWithPredicates(final QName qname, final int size)
+ throws IOException {
+ if (size == 1) {
+ return NodeIdentifierWithPredicates.of(qname, readQName(), readLeafValue());
+ } else if (size > 1) {
+ final ImmutableMap.Builder<QName, Object> builder = ImmutableMap.builderWithExpectedSize(size);
+ for (int i = 0; i < size; ++i) {
+ builder.put(readQName(), readLeafValue());
+ }
+ return NodeIdentifierWithPredicates.of(qname, builder.build());
+ } else if (size == 0) {
+ return NodeIdentifierWithPredicates.of(qname);
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Invalid predicate count " + size);
+ }
+ }
+
+ private NodeWithValue<?> readNodeWithValue(final byte header) throws IOException {
+ final QName qname = readNodeIdentifier(header).getNodeType();
+ return new NodeWithValue<>(qname, readLeafValue());
+ }
+
+ private static void verifyPathIdentifierOnly(final byte header) throws InvalidNormalizedNodeStreamException {
+ if ((header & MagnesiumPathArgument.SIZE_MASK) != 0) {
+ throw new InvalidNormalizedNodeStreamException("Invalid path argument header " + header);
+ }
+ }
+
+ private @NonNull NodeIdentifier decodeNodeIdentifierRef1() throws IOException {
+ return lookupNodeIdentifier(input.readUnsignedByte());
+ }
+
+ private @NonNull NodeIdentifier decodeNodeIdentifierRef2() throws IOException {
+ return lookupNodeIdentifier(input.readUnsignedShort() + 256);
+ }
+
+ private @NonNull NodeIdentifier decodeNodeIdentifierRef4() throws IOException {
+ return lookupNodeIdentifier(input.readInt());
+ }
+
+ private @NonNull QName decodeQName() throws IOException {
+ return decodeNodeIdentifier().getNodeType();
+ }
+
+ private @NonNull QName decodeQNameRef1() throws IOException {
+ return lookupQName(input.readUnsignedByte());
+ }
+
+ private @NonNull QName decodeQNameRef2() throws IOException {
+ return lookupQName(input.readUnsignedShort() + 256);
+ }
+
+ private @NonNull QName decodeQNameRef4() throws IOException {
+ return lookupQName(input.readInt());
+ }
+
+ private @NonNull QNameModule decodeQNameModule() throws IOException {
+ final byte type = input.readByte();
+ final int index;
+ switch (type) {
+ case MagnesiumValue.MODREF_1B:
+ index = input.readUnsignedByte();
+ break;
+ case MagnesiumValue.MODREF_2B:
+ index = input.readUnsignedShort() + 256;
+ break;
+ case MagnesiumValue.MODREF_4B:
+ index = input.readInt();
+ break;
+ default:
+ return decodeQNameModuleDef(type);
+ }
+
+ try {
+ return codedModules.get(index);
+ } catch (IndexOutOfBoundsException e) {
+ throw new InvalidNormalizedNodeStreamException("Invalid QNameModule reference " + index, e);
+ }
+ }
+
+ // QNameModule definition, i.e. two encoded strings
+ private @NonNull QNameModule decodeQNameModuleDef(final byte type) throws IOException {
+ final String namespace = readRefString(type);
+
+ final byte refType = input.readByte();
+ final String revision = refType == MagnesiumValue.STRING_EMPTY ? null : readRefString(refType);
+ final QNameModule module;
+ try {
+ module = QNameFactory.createModule(namespace, revision);
+ } catch (UncheckedExecutionException e) {
+ throw new InvalidNormalizedNodeStreamException("Illegal QNameModule ns=" + namespace + " rev=" + revision,
+ e);
+ }
+
+ codedModules.add(module);
+ return module;
+ }
+
+ private @NonNull String readRefString() throws IOException {
+ return readRefString(input.readByte());
+ }
+
+ private @NonNull String readRefString(final byte type) throws IOException {
+ final String str;
+ switch (type) {
+ case MagnesiumValue.STRING_REF_1B:
+ return lookupString(input.readUnsignedByte());
+ case MagnesiumValue.STRING_REF_2B:
+ return lookupString(input.readUnsignedShort() + 256);
+ case MagnesiumValue.STRING_REF_4B:
+ return lookupString(input.readInt());
+ case MagnesiumValue.STRING_EMPTY:
+ return "";
+ case MagnesiumValue.STRING_2B:
+ str = readString2();
+ break;
+ case MagnesiumValue.STRING_4B:
+ str = readString4();
+ break;
+ case MagnesiumValue.STRING_CHARS:
+ str = readCharsString();
+ break;
+ case MagnesiumValue.STRING_UTF:
+ str = input.readUTF();
+ break;
+ default:
+ throw new InvalidNormalizedNodeStreamException("Unexpected String type " + type);
+ }
+
+ // TODO: consider interning Strings -- that would help with bits, but otherwise it's probably not worth it
+ codedStrings.add(verifyNotNull(str));
+ return str;
+ }
+
+ private @NonNull String readString() throws IOException {
+ final byte type = input.readByte();
+ switch (type) {
+ case MagnesiumValue.STRING_EMPTY:
+ return "";
+ case MagnesiumValue.STRING_UTF:
+ return input.readUTF();
+ case MagnesiumValue.STRING_2B:
+ return readString2();
+ case MagnesiumValue.STRING_4B:
+ return readString4();
+ case MagnesiumValue.STRING_CHARS:
+ return readCharsString();
+ default:
+ throw new InvalidNormalizedNodeStreamException("Unexpected String type " + type);
+ }
+ }
+
+ private @NonNull String readString2() throws IOException {
+ return readByteString(input.readUnsignedShort());
+ }
+
+ private @NonNull String readString4() throws IOException {
+ return readByteString(input.readInt());
+ }
+
+ private @NonNull String readByteString(final int size) throws IOException {
+ if (size > 0) {
+ final byte[] bytes = new byte[size];
+ input.readFully(bytes);
+ return new String(bytes, StandardCharsets.UTF_8);
+ } else if (size == 0) {
+ return "";
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Invalid String bytes length " + size);
+ }
+ }
+
+ private @NonNull String readCharsString() throws IOException {
+ final int size = input.readInt();
+ if (size > 0) {
+ final char[] chars = new char[size];
+ for (int i = 0; i < size; ++i) {
+ chars[i] = input.readChar();
+ }
+ return String.valueOf(chars);
+ } else if (size == 0) {
+ return "";
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Invalid String chars length " + size);
+ }
+ }
+
+ private @NonNull NodeIdentifier lookupNodeIdentifier(final int index) throws InvalidNormalizedNodeStreamException {
+ try {
+ return codedNodeIdentifiers.get(index);
+ } catch (IndexOutOfBoundsException e) {
+ throw new InvalidNormalizedNodeStreamException("Invalid QName reference " + index, e);
+ }
+ }
+
+ private @NonNull QName lookupQName(final int index) throws InvalidNormalizedNodeStreamException {
+ return lookupNodeIdentifier(index).getNodeType();
+ }
+
+ private @NonNull String lookupString(final int index) throws InvalidNormalizedNodeStreamException {
+ try {
+ return codedStrings.get(index);
+ } catch (IndexOutOfBoundsException e) {
+ throw new InvalidNormalizedNodeStreamException("Invalid String reference " + index, e);
+ }
+ }
+
+ private @NonNull DOMSource readDOMSource() throws IOException {
+ final String str = readString();
+ try {
+ return new DOMSource(UntrustedXML.newDocumentBuilder().parse(new InputSource(new StringReader(str)))
+ .getDocumentElement());
+ } catch (SAXException e) {
+ throw new IOException("Error parsing XML: " + str, e);
+ }
+ }
+
+ private @NonNull Object readLeafValue() throws IOException {
+ final byte type = input.readByte();
+ switch (type) {
+ case MagnesiumValue.BOOLEAN_FALSE:
+ return Boolean.FALSE;
+ case MagnesiumValue.BOOLEAN_TRUE:
+ return Boolean.TRUE;
+ case MagnesiumValue.EMPTY:
+ return Empty.getInstance();
+ case MagnesiumValue.INT8:
+ return input.readByte();
+ case MagnesiumValue.INT8_0:
+ return INT8_0;
+ case MagnesiumValue.INT16:
+ return input.readShort();
+ case MagnesiumValue.INT16_0:
+ return INT16_0;
+ case MagnesiumValue.INT32:
+ return input.readInt();
+ case MagnesiumValue.INT32_0:
+ return INT32_0;
+ case MagnesiumValue.INT32_2B:
+ return input.readShort() & 0xFFFF;
+ case MagnesiumValue.INT64:
+ return input.readLong();
+ case MagnesiumValue.INT64_0:
+ return INT64_0;
+ case MagnesiumValue.INT64_4B:
+ return input.readInt() & 0xFFFFFFFFL;
+ case MagnesiumValue.UINT8:
+ return Uint8.fromByteBits(input.readByte());
+ case MagnesiumValue.UINT8_0:
+ return UINT8_0;
+ case MagnesiumValue.UINT16:
+ return Uint16.fromShortBits(input.readShort());
+ case MagnesiumValue.UINT16_0:
+ return UINT16_0;
+ case MagnesiumValue.UINT32:
+ return Uint32.fromIntBits(input.readInt());
+ case MagnesiumValue.UINT32_0:
+ return UINT32_0;
+ case MagnesiumValue.UINT32_2B:
+ return Uint32.fromIntBits(input.readShort() & 0xFFFF);
+ case MagnesiumValue.UINT64:
+ return Uint64.fromLongBits(input.readLong());
+ case MagnesiumValue.UINT64_0:
+ return UINT64_0;
+ case MagnesiumValue.UINT64_4B:
+ return Uint64.fromLongBits(input.readInt() & 0xFFFFFFFFL);
+ case MagnesiumValue.BIGDECIMAL:
+ // FIXME: use string -> BigDecimal cache
+ return new BigDecimal(input.readUTF());
+ case MagnesiumValue.BIGINTEGER:
+ return readBigInteger();
+ case MagnesiumValue.STRING_EMPTY:
+ return "";
+ case MagnesiumValue.STRING_UTF:
+ return input.readUTF();
+ case MagnesiumValue.STRING_2B:
+ return readString2();
+ case MagnesiumValue.STRING_4B:
+ return readString4();
+ case MagnesiumValue.STRING_CHARS:
+ return readCharsString();
+ case MagnesiumValue.BINARY_0:
+ return BINARY_0;
+ case MagnesiumValue.BINARY_1B:
+ return readBinary(128 + input.readUnsignedByte());
+ case MagnesiumValue.BINARY_2B:
+ return readBinary(384 + input.readUnsignedShort());
+ case MagnesiumValue.BINARY_4B:
+ return readBinary(input.readInt());
+ case MagnesiumValue.YIID_0:
+ return YangInstanceIdentifier.EMPTY;
+ case MagnesiumValue.YIID:
+ return readYangInstanceIdentifier(input.readInt());
+ case MagnesiumValue.QNAME:
+ return decodeQName();
+ case MagnesiumValue.QNAME_REF_1B:
+ return decodeQNameRef1();
+ case MagnesiumValue.QNAME_REF_2B:
+ return decodeQNameRef2();
+ case MagnesiumValue.QNAME_REF_4B:
+ return decodeQNameRef4();
+ case MagnesiumValue.BITS_0:
+ return ImmutableSet.of();
+ case MagnesiumValue.BITS_1B:
+ return readBits(input.readUnsignedByte() + 29);
+ case MagnesiumValue.BITS_2B:
+ return readBits(input.readUnsignedShort() + 285);
+ case MagnesiumValue.BITS_4B:
+ return readBits(input.readInt());
+
+ default:
+ if (type > MagnesiumValue.BINARY_0 && type <= MagnesiumValue.BINARY_127) {
+ return readBinary(type - MagnesiumValue.BINARY_0);
+ } else if (type > MagnesiumValue.BITS_0 && type < MagnesiumValue.BITS_1B) {
+ return readBits(type - MagnesiumValue.BITS_0);
+ } else if (type > MagnesiumValue.YIID_0) {
+ // Note 'byte' is range limited, so it is always '&& type <= MagnesiumValue.YIID_31'
+ return readYangInstanceIdentifier(type - MagnesiumValue.YIID_0);
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Invalid value type " + type);
+ }
+ }
+ }
+
+ abstract @NonNull BigInteger readBigInteger() throws IOException;
+
+ private byte @NonNull [] readBinary(final int size) throws IOException {
+ if (size > 0) {
+ final byte[] ret = new byte[size];
+ input.readFully(ret);
+ return ret;
+ } else if (size == 0) {
+ return BINARY_0;
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Invalid binary length " + size);
+ }
+ }
+
+ private @NonNull ImmutableSet<String> readBits(final int size) throws IOException {
+ if (size > 0) {
+ final ImmutableSet.Builder<String> builder = ImmutableSet.builder();
+ for (int i = 0; i < size; ++i) {
+ builder.add(readRefString());
+ }
+ return builder.build();
+ } else if (size == 0) {
+ return ImmutableSet.of();
+ } else {
+ throw new InvalidNormalizedNodeStreamException("Invalid bits length " + size);
+ }
+ }
+}
Code Review / controller.git / blobdiff