diff options
Diffstat (limited to 'java/core/src/main/java/com/google/protobuf/MessageReflection.java')
| -rw-r--r-- | java/core/src/main/java/com/google/protobuf/MessageReflection.java | 332 |
1 files changed, 144 insertions, 188 deletions
diff --git a/java/core/src/main/java/com/google/protobuf/MessageReflection.java b/java/core/src/main/java/com/google/protobuf/MessageReflection.java index 69ad7ddf..9fc72bd9 100644 --- a/java/core/src/main/java/com/google/protobuf/MessageReflection.java +++ b/java/core/src/main/java/com/google/protobuf/MessageReflection.java @@ -54,20 +54,19 @@ class MessageReflection { message.getDescriptorForType().getOptions().getMessageSetWireFormat(); if (alwaysWriteRequiredFields) { fields = new TreeMap<FieldDescriptor, Object>(fields); - for (final FieldDescriptor field : - message.getDescriptorForType().getFields()) { + for (final FieldDescriptor field : message.getDescriptorForType().getFields()) { if (field.isRequired() && !fields.containsKey(field)) { fields.put(field, message.getField(field)); } } } - for (final Map.Entry<Descriptors.FieldDescriptor, Object> entry : - fields.entrySet()) { + for (final Map.Entry<Descriptors.FieldDescriptor, Object> entry : fields.entrySet()) { final Descriptors.FieldDescriptor field = entry.getKey(); final Object value = entry.getValue(); - if (isMessageSet && field.isExtension() && - field.getType() == Descriptors.FieldDescriptor.Type.MESSAGE && - !field.isRepeated()) { + if (isMessageSet + && field.isExtension() + && field.getType() == Descriptors.FieldDescriptor.Type.MESSAGE + && !field.isRepeated()) { output.writeMessageSetExtension(field.getNumber(), (Message) value); } else { FieldSet.writeField(field, value, output); @@ -82,22 +81,20 @@ class MessageReflection { } } - static int getSerializedSize( - Message message, - Map<FieldDescriptor, Object> fields) { + static int getSerializedSize(Message message, Map<FieldDescriptor, Object> fields) { int size = 0; final boolean isMessageSet = message.getDescriptorForType().getOptions().getMessageSetWireFormat(); - for (final Map.Entry<Descriptors.FieldDescriptor, Object> entry : - fields.entrySet()) { + for (final Map.Entry<Descriptors.FieldDescriptor, Object> entry : fields.entrySet()) { final Descriptors.FieldDescriptor field = entry.getKey(); final Object value = entry.getValue(); - if (isMessageSet && field.isExtension() && - field.getType() == Descriptors.FieldDescriptor.Type.MESSAGE && - !field.isRepeated()) { - size += CodedOutputStream.computeMessageSetExtensionSize( - field.getNumber(), (Message) value); + if (isMessageSet + && field.isExtension() + && field.getType() == Descriptors.FieldDescriptor.Type.MESSAGE + && !field.isRepeated()) { + size += + CodedOutputStream.computeMessageSetExtensionSize(field.getNumber(), (Message) value); } else { size += FieldSet.computeFieldSize(field, value); } @@ -126,9 +123,7 @@ class MessageReflection { @SuppressWarnings("unchecked") static boolean isInitialized(MessageOrBuilder message) { // Check that all required fields are present. - for (final Descriptors.FieldDescriptor field : message - .getDescriptorForType() - .getFields()) { + for (final Descriptors.FieldDescriptor field : message.getDescriptorForType().getFields()) { if (field.isRequired()) { if (!message.hasField(field)) { return false; @@ -142,8 +137,7 @@ class MessageReflection { final Descriptors.FieldDescriptor field = entry.getKey(); if (field.getJavaType() == Descriptors.FieldDescriptor.JavaType.MESSAGE) { if (field.isRepeated()) { - for (final Message element - : (List<Message>) entry.getValue()) { + for (final Message element : (List<Message>) entry.getValue()) { if (!element.isInitialized()) { return false; } @@ -159,31 +153,24 @@ class MessageReflection { return true; } - private static String subMessagePrefix(final String prefix, - final Descriptors.FieldDescriptor field, - final int index) { + private static String subMessagePrefix( + final String prefix, final Descriptors.FieldDescriptor field, final int index) { final StringBuilder result = new StringBuilder(prefix); if (field.isExtension()) { - result.append('(') - .append(field.getFullName()) - .append(')'); + result.append('(').append(field.getFullName()).append(')'); } else { result.append(field.getName()); } if (index != -1) { - result.append('[') - .append(index) - .append(']'); + result.append('[').append(index).append(']'); } result.append('.'); return result.toString(); } - private static void findMissingFields(final MessageOrBuilder message, - final String prefix, - final List<String> results) { - for (final Descriptors.FieldDescriptor field : - message.getDescriptorForType().getFields()) { + private static void findMissingFields( + final MessageOrBuilder message, final String prefix, final List<String> results) { + for (final Descriptors.FieldDescriptor field : message.getDescriptorForType().getFields()) { if (field.isRequired() && !message.hasField(field)) { results.add(prefix + field.getName()); } @@ -198,15 +185,13 @@ class MessageReflection { if (field.isRepeated()) { int i = 0; for (final Object element : (List) value) { - findMissingFields((MessageOrBuilder) element, - subMessagePrefix(prefix, field, i++), - results); + findMissingFields( + (MessageOrBuilder) element, subMessagePrefix(prefix, field, i++), results); } } else { if (message.hasField(field)) { - findMissingFields((MessageOrBuilder) value, - subMessagePrefix(prefix, field, -1), - results); + findMissingFields( + (MessageOrBuilder) value, subMessagePrefix(prefix, field, -1), results); } } } @@ -214,11 +199,10 @@ class MessageReflection { } /** - * Populates {@code this.missingFields} with the full "path" of each missing - * required field in the given message. + * Populates {@code this.missingFields} with the full "path" of each missing required field in the + * given message. */ - static List<String> findMissingFields( - final MessageOrBuilder message) { + static List<String> findMissingFields(final MessageOrBuilder message) { final List<String> results = new ArrayList<String>(); findMissingFields(message, "", results); return results; @@ -226,12 +210,11 @@ class MessageReflection { static interface MergeTarget { enum ContainerType { - MESSAGE, EXTENSION_SET + MESSAGE, + EXTENSION_SET } - /** - * Returns the descriptor for the target. - */ + /** Returns the descriptor for the target. */ public Descriptors.Descriptor getDescriptorForType(); public ContainerType getContainerType(); @@ -240,21 +223,19 @@ class MessageReflection { ExtensionRegistry registry, String name); public ExtensionRegistry.ExtensionInfo findExtensionByNumber( - ExtensionRegistry registry, Descriptors.Descriptor containingType, - int fieldNumber); + ExtensionRegistry registry, Descriptors.Descriptor containingType, int fieldNumber); /** - * Obtains the value of the given field, or the default value if it is not - * set. For primitive fields, the boxed primitive value is returned. For - * enum fields, the EnumValueDescriptor for the value is returned. For - * embedded message fields, the sub-message is returned. For repeated + * Obtains the value of the given field, or the default value if it is not set. For primitive + * fields, the boxed primitive value is returned. For enum fields, the EnumValueDescriptor for + * the value is returned. For embedded message fields, the sub-message is returned. For repeated * fields, a java.util.List is returned. */ public Object getField(Descriptors.FieldDescriptor field); /** - * Returns true if the given field is set. This is exactly equivalent to - * calling the generated "has" accessor method corresponding to the field. + * Returns true if the given field is set. This is exactly equivalent to calling the generated + * "has" accessor method corresponding to the field. * * @throws IllegalArgumentException The field is a repeated field, or {@code * field.getContainingType() != getDescriptorForType()}. @@ -262,106 +243,98 @@ class MessageReflection { boolean hasField(Descriptors.FieldDescriptor field); /** - * Sets a field to the given value. The value must be of the correct type - * for this field, i.e. the same type that - * {@link Message#getField(Descriptors.FieldDescriptor)} - * would return. + * Sets a field to the given value. The value must be of the correct type for this field, i.e. + * the same type that {@link Message#getField(Descriptors.FieldDescriptor)} would return. */ MergeTarget setField(Descriptors.FieldDescriptor field, Object value); /** - * Clears the field. This is exactly equivalent to calling the generated - * "clear" accessor method corresponding to the field. + * Clears the field. This is exactly equivalent to calling the generated "clear" accessor method + * corresponding to the field. */ MergeTarget clearField(Descriptors.FieldDescriptor field); /** - * Sets an element of a repeated field to the given value. The value must - * be of the correct type for this field, i.e. the same type that {@link + * Sets an element of a repeated field to the given value. The value must be of the correct type + * for this field, i.e. the same type that {@link * Message#getRepeatedField(Descriptors.FieldDescriptor, int)} would return. * - * @throws IllegalArgumentException The field is not a repeated field, or - * {@code field.getContainingType() != - * getDescriptorForType()}. + * @throws IllegalArgumentException The field is not a repeated field, or {@code + * field.getContainingType() != getDescriptorForType()}. */ - MergeTarget setRepeatedField(Descriptors.FieldDescriptor field, - int index, Object value); + MergeTarget setRepeatedField(Descriptors.FieldDescriptor field, int index, Object value); /** * Like {@code setRepeatedField}, but appends the value as a new element. * - * @throws IllegalArgumentException The field is not a repeated field, or - * {@code field.getContainingType() != - * getDescriptorForType()}. + * @throws IllegalArgumentException The field is not a repeated field, or {@code + * field.getContainingType() != getDescriptorForType()}. */ - MergeTarget addRepeatedField(Descriptors.FieldDescriptor field, - Object value); + MergeTarget addRepeatedField(Descriptors.FieldDescriptor field, Object value); /** * Returns true if the given oneof is set. * - * @throws IllegalArgumentException if - * {@code oneof.getContainingType() != getDescriptorForType()}. + * @throws IllegalArgumentException if {@code oneof.getContainingType() != + * getDescriptorForType()}. */ boolean hasOneof(Descriptors.OneofDescriptor oneof); /** - * Clears the oneof. This is exactly equivalent to calling the generated - * "clear" accessor method corresponding to the oneof. + * Clears the oneof. This is exactly equivalent to calling the generated "clear" accessor method + * corresponding to the oneof. */ MergeTarget clearOneof(Descriptors.OneofDescriptor oneof); - /** - * Obtains the FieldDescriptor if the given oneof is set. Returns null - * if no field is set. - */ + /** Obtains the FieldDescriptor if the given oneof is set. Returns null if no field is set. */ Descriptors.FieldDescriptor getOneofFieldDescriptor(Descriptors.OneofDescriptor oneof); /** - * Parse the input stream into a sub field group defined based on either - * FieldDescriptor or the default instance. + * Parse the input stream into a sub field group defined based on either FieldDescriptor or the + * default instance. */ - Object parseGroup(CodedInputStream input, ExtensionRegistryLite registry, - Descriptors.FieldDescriptor descriptor, Message defaultInstance) + Object parseGroup( + CodedInputStream input, + ExtensionRegistryLite registry, + Descriptors.FieldDescriptor descriptor, + Message defaultInstance) throws IOException; /** - * Parse the input stream into a sub field message defined based on either - * FieldDescriptor or the default instance. + * Parse the input stream into a sub field message defined based on either FieldDescriptor or + * the default instance. */ - Object parseMessage(CodedInputStream input, ExtensionRegistryLite registry, - Descriptors.FieldDescriptor descriptor, Message defaultInstance) + Object parseMessage( + CodedInputStream input, + ExtensionRegistryLite registry, + Descriptors.FieldDescriptor descriptor, + Message defaultInstance) throws IOException; /** - * Parse from a ByteString into a sub field message defined based on either - * FieldDescriptor or the default instance. There isn't a varint indicating - * the length of the message at the beginning of the input ByteString. + * Parse from a ByteString into a sub field message defined based on either FieldDescriptor or + * the default instance. There isn't a varint indicating the length of the message at the + * beginning of the input ByteString. */ Object parseMessageFromBytes( - ByteString bytes, ExtensionRegistryLite registry, - Descriptors.FieldDescriptor descriptor, Message defaultInstance) + ByteString bytes, + ExtensionRegistryLite registry, + Descriptors.FieldDescriptor descriptor, + Message defaultInstance) throws IOException; - /** - * Returns the UTF8 validation level for the field. - */ - WireFormat.Utf8Validation getUtf8Validation(Descriptors.FieldDescriptor - descriptor); + /** Returns the UTF8 validation level for the field. */ + WireFormat.Utf8Validation getUtf8Validation(Descriptors.FieldDescriptor descriptor); /** - * Returns a new merge target for a sub-field. When defaultInstance is - * provided, it indicates the descriptor is for an extension type, and - * implementations should create a new instance from the defaultInstance - * prototype directly. + * Returns a new merge target for a sub-field. When defaultInstance is provided, it indicates + * the descriptor is for an extension type, and implementations should create a new instance + * from the defaultInstance prototype directly. */ MergeTarget newMergeTargetForField( - Descriptors.FieldDescriptor descriptor, - Message defaultInstance); + Descriptors.FieldDescriptor descriptor, Message defaultInstance); - /** - * Finishes the merge and returns the underlying object. - */ + /** Finishes the merge and returns the underlying object. */ Object finish(); } @@ -443,8 +416,7 @@ class MessageReflection { @Override public ExtensionRegistry.ExtensionInfo findExtensionByNumber( ExtensionRegistry registry, Descriptors.Descriptor containingType, int fieldNumber) { - return registry.findImmutableExtensionByNumber(containingType, - fieldNumber); + return registry.findImmutableExtensionByNumber(containingType, fieldNumber); } @Override @@ -523,8 +495,7 @@ class MessageReflection { public MergeTarget newMergeTargetForField( Descriptors.FieldDescriptor field, Message defaultInstance) { if (defaultInstance != null) { - return new BuilderAdapter( - defaultInstance.newBuilderForType()); + return new BuilderAdapter(defaultInstance.newBuilderForType()); } else { return new BuilderAdapter(builder.newBuilderForField(field)); } @@ -536,8 +507,7 @@ class MessageReflection { return WireFormat.Utf8Validation.STRICT; } // TODO(liujisi): support lazy strings for repeated fields. - if (!descriptor.isRepeated() - && builder instanceof GeneratedMessage.Builder) { + if (!descriptor.isRepeated() && builder instanceof GeneratedMessage.Builder) { return WireFormat.Utf8Validation.LAZY; } return WireFormat.Utf8Validation.LOOSE; @@ -560,8 +530,7 @@ class MessageReflection { @Override public Descriptors.Descriptor getDescriptorForType() { - throw new UnsupportedOperationException( - "getDescriptorForType() called on FieldSet object"); + throw new UnsupportedOperationException("getDescriptorForType() called on FieldSet object"); } @Override @@ -629,8 +598,7 @@ class MessageReflection { @Override public ExtensionRegistry.ExtensionInfo findExtensionByNumber( ExtensionRegistry registry, Descriptors.Descriptor containingType, int fieldNumber) { - return registry.findImmutableExtensionByNumber(containingType, - fieldNumber); + return registry.findImmutableExtensionByNumber(containingType, fieldNumber); } @Override @@ -640,8 +608,7 @@ class MessageReflection { Descriptors.FieldDescriptor field, Message defaultInstance) throws IOException { - Message.Builder subBuilder = - defaultInstance.newBuilderForType(); + Message.Builder subBuilder = defaultInstance.newBuilderForType(); if (!field.isRepeated()) { Message originalMessage = (Message) getField(field); if (originalMessage != null) { @@ -659,8 +626,7 @@ class MessageReflection { Descriptors.FieldDescriptor field, Message defaultInstance) throws IOException { - Message.Builder subBuilder = - defaultInstance.newBuilderForType(); + Message.Builder subBuilder = defaultInstance.newBuilderForType(); if (!field.isRepeated()) { Message originalMessage = (Message) getField(field); if (originalMessage != null) { @@ -678,7 +644,7 @@ class MessageReflection { Descriptors.FieldDescriptor field, Message defaultInstance) throws IOException { - Message.Builder subBuilder = defaultInstance.newBuilderForType(); + Message.Builder subBuilder = defaultInstance.newBuilderForType(); if (!field.isRepeated()) { Message originalMessage = (Message) getField(field); if (originalMessage != null) { @@ -692,8 +658,7 @@ class MessageReflection { @Override public MergeTarget newMergeTargetForField( Descriptors.FieldDescriptor descriptor, Message defaultInstance) { - throw new UnsupportedOperationException( - "newMergeTargetForField() called on FieldSet object"); + throw new UnsupportedOperationException("newMergeTargetForField() called on FieldSet object"); } @Override @@ -707,8 +672,7 @@ class MessageReflection { @Override public Object finish() { - throw new UnsupportedOperationException( - "finish() called on FieldSet object"); + throw new UnsupportedOperationException("finish() called on FieldSet object"); } } @@ -731,8 +695,7 @@ class MessageReflection { MergeTarget target, int tag) throws IOException { - if (type.getOptions().getMessageSetWireFormat() && - tag == WireFormat.MESSAGE_SET_ITEM_TAG) { + if (type.getOptions().getMessageSetWireFormat() && tag == WireFormat.MESSAGE_SET_ITEM_TAG) { mergeMessageSetExtensionFromCodedStream( input, unknownFields, extensionRegistry, type, target); return true; @@ -752,19 +715,16 @@ class MessageReflection { // were empty. if (extensionRegistry instanceof ExtensionRegistry) { final ExtensionRegistry.ExtensionInfo extension = - target.findExtensionByNumber((ExtensionRegistry) extensionRegistry, - type, fieldNumber); + target.findExtensionByNumber((ExtensionRegistry) extensionRegistry, type, fieldNumber); if (extension == null) { field = null; } else { field = extension.descriptor; defaultInstance = extension.defaultInstance; - if (defaultInstance == null && - field.getJavaType() - == Descriptors.FieldDescriptor.JavaType.MESSAGE) { + if (defaultInstance == null + && field.getJavaType() == Descriptors.FieldDescriptor.JavaType.MESSAGE) { throw new IllegalStateException( - "Message-typed extension lacked default instance: " + - field.getFullName()); + "Message-typed extension lacked default instance: " + field.getFullName()); } } } else { @@ -779,21 +739,19 @@ class MessageReflection { boolean unknown = false; boolean packed = false; if (field == null) { - unknown = true; // Unknown field. - } else if (wireType == FieldSet.getWireFormatForFieldType( - field.getLiteType(), - false /* isPacked */)) { + unknown = true; // Unknown field. + } else if (wireType + == FieldSet.getWireFormatForFieldType(field.getLiteType(), /* isPacked= */ false)) { packed = false; - } else if (field.isPackable() && - wireType == FieldSet.getWireFormatForFieldType( - field.getLiteType(), - true /* isPacked */)) { + } else if (field.isPackable() + && wireType + == FieldSet.getWireFormatForFieldType(field.getLiteType(), /* isPacked= */ true)) { packed = true; } else { - unknown = true; // Unknown wire type. + unknown = true; // Unknown wire type. } - if (unknown) { // Unknown field or wrong wire type. Skip. + if (unknown) { // Unknown field or wrong wire type. Skip. if (unknownFields != null) { return unknownFields.mergeFieldFrom(tag, input); } else { @@ -808,8 +766,8 @@ class MessageReflection { while (input.getBytesUntilLimit() > 0) { final int rawValue = input.readEnum(); if (field.getFile().supportsUnknownEnumValue()) { - target.addRepeatedField(field, - field.getEnumType().findValueByNumberCreatingIfUnknown(rawValue)); + target.addRepeatedField( + field, field.getEnumType().findValueByNumberCreatingIfUnknown(rawValue)); } else { final Object value = field.getEnumType().findValueByNumber(rawValue); if (value == null) { @@ -822,8 +780,9 @@ class MessageReflection { } } else { while (input.getBytesUntilLimit() > 0) { - final Object value = WireFormat.readPrimitiveField( - input, field.getLiteType(), target.getUtf8Validation(field)); + final Object value = + WireFormat.readPrimitiveField( + input, field.getLiteType(), target.getUtf8Validation(field)); target.addRepeatedField(field, value); } } @@ -831,16 +790,16 @@ class MessageReflection { } else { final Object value; switch (field.getType()) { - case GROUP: { - value = target - .parseGroup(input, extensionRegistry, field, defaultInstance); - break; - } - case MESSAGE: { - value = target - .parseMessage(input, extensionRegistry, field, defaultInstance); - break; - } + case GROUP: + { + value = target.parseGroup(input, extensionRegistry, field, defaultInstance); + break; + } + case MESSAGE: + { + value = target.parseMessage(input, extensionRegistry, field, defaultInstance); + break; + } case ENUM: final int rawValue = input.readEnum(); if (field.getFile().supportsUnknownEnumValue()) { @@ -858,8 +817,9 @@ class MessageReflection { } break; default: - value = WireFormat.readPrimitiveField( - input, field.getLiteType(), target.getUtf8Validation(field)); + value = + WireFormat.readPrimitiveField( + input, field.getLiteType(), target.getUtf8Validation(field)); break; } @@ -873,16 +833,14 @@ class MessageReflection { return true; } - /** - * Called by {@code #mergeFieldFrom()} to parse a MessageSet extension into - * MergeTarget. - */ + /** Called by {@code #mergeFieldFrom()} to parse a MessageSet extension into MergeTarget. */ private static void mergeMessageSetExtensionFromCodedStream( CodedInputStream input, UnknownFieldSet.Builder unknownFields, ExtensionRegistryLite extensionRegistry, Descriptors.Descriptor type, - MergeTarget target) throws IOException { + MergeTarget target) + throws IOException { // The wire format for MessageSet is: // message MessageSet { @@ -921,19 +879,17 @@ class MessageReflection { // extensions of it. Otherwise we will treat the registry as if it // were empty. if (extensionRegistry instanceof ExtensionRegistry) { - extension = target.findExtensionByNumber( - (ExtensionRegistry) extensionRegistry, type, typeId); + extension = + target.findExtensionByNumber((ExtensionRegistry) extensionRegistry, type, typeId); } } } else if (tag == WireFormat.MESSAGE_SET_MESSAGE_TAG) { if (typeId != 0) { - if (extension != null && - ExtensionRegistryLite.isEagerlyParseMessageSets()) { + if (extension != null && ExtensionRegistryLite.isEagerlyParseMessageSets()) { // We already know the type, so we can parse directly from the // input with no copying. Hooray! - eagerlyMergeMessageSetExtension( - input, extension, extensionRegistry, target); + eagerlyMergeMessageSetExtension(input, extension, extensionRegistry, target); rawBytes = null; continue; } @@ -952,12 +908,11 @@ class MessageReflection { // Process the raw bytes. if (rawBytes != null && typeId != 0) { // Zero is not a valid type ID. if (extension != null) { // We known the type - mergeMessageSetExtensionFromBytes( - rawBytes, extension, extensionRegistry, target); + mergeMessageSetExtensionFromBytes(rawBytes, extension, extensionRegistry, target); } else { // We don't know how to parse this. Ignore it. if (rawBytes != null && unknownFields != null) { - unknownFields.mergeField(typeId, UnknownFieldSet.Field.newBuilder() - .addLengthDelimited(rawBytes).build()); + unknownFields.mergeField( + typeId, UnknownFieldSet.Field.newBuilder().addLengthDelimited(rawBytes).build()); } } } @@ -967,20 +922,21 @@ class MessageReflection { ByteString rawBytes, ExtensionRegistry.ExtensionInfo extension, ExtensionRegistryLite extensionRegistry, - MergeTarget target) throws IOException { + MergeTarget target) + throws IOException { Descriptors.FieldDescriptor field = extension.descriptor; boolean hasOriginalValue = target.hasField(field); if (hasOriginalValue || ExtensionRegistryLite.isEagerlyParseMessageSets()) { // If the field already exists, we just parse the field. - Object value = target.parseMessageFromBytes( - rawBytes, extensionRegistry,field, extension.defaultInstance); + Object value = + target.parseMessageFromBytes( + rawBytes, extensionRegistry, field, extension.defaultInstance); target.setField(field, value); } else { // Use LazyField to load MessageSet lazily. - LazyField lazyField = new LazyField( - extension.defaultInstance, extensionRegistry, rawBytes); + LazyField lazyField = new LazyField(extension.defaultInstance, extensionRegistry, rawBytes); target.setField(field, lazyField); } } @@ -989,10 +945,10 @@ class MessageReflection { CodedInputStream input, ExtensionRegistry.ExtensionInfo extension, ExtensionRegistryLite extensionRegistry, - MergeTarget target) throws IOException { + MergeTarget target) + throws IOException { Descriptors.FieldDescriptor field = extension.descriptor; - Object value = target.parseMessage(input, extensionRegistry, field, - extension.defaultInstance); + Object value = target.parseMessage(input, extensionRegistry, field, extension.defaultInstance); target.setField(field, value); } } |