| public ReadPrimitiveField ( FieldType fieldType ) : object | ||
| fieldType | FieldType | |
| return | object | |
/// <summary>
/// Like <see cref="MergeFrom(CodedInputStream, ExtensionRegistry, IBuilder)" />
/// but parses a single field.
/// </summary>
/// <param name="input">The input to read the field from</param>
/// <param name="extensionRegistry">Registry to use when an extension field is encountered</param>
/// <param name="builder">Builder to merge field into, if it's a known field</param>
/// <param name="tag">The tag, which should already have been read from the input</param>
/// <returns>true unless the tag is an end-group tag</returns>
internal bool MergeFieldFrom(CodedInputStream input,
ExtensionRegistry extensionRegistry, IBuilder builder, uint tag)
{
MessageDescriptor type = builder.DescriptorForType;
if (type.Options.MessageSetWireFormat && tag == WireFormat.MessageSetTag.ItemStart) {
MergeMessageSetExtensionFromCodedStream(input, extensionRegistry, builder);
return true;
}
WireFormat.WireType wireType = WireFormat.GetTagWireType(tag);
int fieldNumber = WireFormat.GetTagFieldNumber(tag);
FieldDescriptor field;
IMessage defaultFieldInstance = null;
if (type.IsExtensionNumber(fieldNumber)) {
ExtensionInfo extension = extensionRegistry[type, fieldNumber];
if (extension == null) {
field = null;
} else {
field = extension.Descriptor;
defaultFieldInstance = extension.DefaultInstance;
}
} else {
field = type.FindFieldByNumber(fieldNumber);
}
// Unknown field or wrong wire type. Skip.
if (field == null || wireType != WireFormat.GetWireType(field)) {
return MergeFieldFrom(tag, input);
}
if (field.IsPacked) {
int length = (int)input.ReadRawVarint32();
int limit = input.PushLimit(length);
if (field.FieldType == FieldType.Enum) {
while (!input.ReachedLimit) {
int rawValue = input.ReadEnum();
object value = field.EnumType.FindValueByNumber(rawValue);
if (value == null) {
// If the number isn't recognized as a valid value for this
// enum, drop it (don't even add it to unknownFields).
return true;
}
builder.WeakAddRepeatedField(field, value);
}
} else {
while (!input.ReachedLimit) {
Object value = input.ReadPrimitiveField(field.FieldType);
builder.WeakAddRepeatedField(field, value);
}
}
input.PopLimit(limit);
} else {
object value;
switch (field.FieldType) {
case FieldType.Group:
case FieldType.Message: {
IBuilder subBuilder;
if (defaultFieldInstance != null) {
subBuilder = defaultFieldInstance.WeakCreateBuilderForType();
} else {
subBuilder = builder.CreateBuilderForField(field);
}
if (!field.IsRepeated) {
subBuilder.WeakMergeFrom((IMessage)builder[field]);
}
if (field.FieldType == FieldType.Group) {
input.ReadGroup(field.FieldNumber, subBuilder, extensionRegistry);
} else {
input.ReadMessage(subBuilder, extensionRegistry);
}
value = subBuilder.WeakBuild();
break;
}
case FieldType.Enum: {
int rawValue = input.ReadEnum();
value = field.EnumType.FindValueByNumber(rawValue);
// If the number isn't recognized as a valid value for this enum,
// drop it.
if (value == null) {
MergeVarintField(fieldNumber, (ulong)rawValue);
return true;
}
break;
}
default:
value = input.ReadPrimitiveField(field.FieldType);
break;
}
if (field.IsRepeated) {
builder.WeakAddRepeatedField(field, value);
} else {
builder[field] = value;
}
}
return true;
}
/// <summary>
/// Like <see cref="MergeFrom(CodedInputStream, ExtensionRegistry, IBuilder)" />
/// but parses a single field.
/// </summary>
/// <param name="input">The input to read the field from</param>
/// <param name="extensionRegistry">Registry to use when an extension field is encountered</param>
/// <param name="builder">Builder to merge field into, if it's a known field</param>
/// <param name="tag">The tag, which should already have been read from the input</param>
/// <returns>true unless the tag is an end-group tag</returns>
internal bool MergeFieldFrom(CodedInputStream input,
ExtensionRegistry extensionRegistry, IBuilder builder, uint tag)
{
MessageDescriptor type = builder.DescriptorForType;
if (type.Options.MessageSetWireFormat && tag == WireFormat.MessageSetTag.ItemStart)
{
MergeMessageSetExtensionFromCodedStream(input, extensionRegistry, builder);
return(true);
}
WireFormat.WireType wireType = WireFormat.GetTagWireType(tag);
int fieldNumber = WireFormat.GetTagFieldNumber(tag);
FieldDescriptor field;
IMessage defaultFieldInstance = null;
if (type.IsExtensionNumber(fieldNumber))
{
ExtensionInfo extension = extensionRegistry[type, fieldNumber];
if (extension == null)
{
field = null;
}
else
{
field = extension.Descriptor;
defaultFieldInstance = extension.DefaultInstance;
}
}
else
{
field = type.FindFieldByNumber(fieldNumber);
}
// Unknown field or wrong wire type. Skip.
if (field == null || wireType != WireFormat.GetWireType(field))
{
return(MergeFieldFrom(tag, input));
}
if (field.IsPacked)
{
int length = (int)input.ReadRawVarint32();
int limit = input.PushLimit(length);
if (field.FieldType == FieldType.Enum)
{
while (!input.ReachedLimit)
{
int rawValue = input.ReadEnum();
object value = field.EnumType.FindValueByNumber(rawValue);
if (value == null)
{
// If the number isn't recognized as a valid value for this
// enum, drop it (don't even add it to unknownFields).
return(true);
}
builder.WeakAddRepeatedField(field, value);
}
}
else
{
while (!input.ReachedLimit)
{
Object value = input.ReadPrimitiveField(field.FieldType);
builder.WeakAddRepeatedField(field, value);
}
}
input.PopLimit(limit);
}
else
{
object value;
switch (field.FieldType)
{
case FieldType.Group:
case FieldType.Message: {
IBuilder subBuilder;
if (defaultFieldInstance != null)
{
subBuilder = defaultFieldInstance.WeakCreateBuilderForType();
}
else
{
subBuilder = builder.CreateBuilderForField(field);
}
if (!field.IsRepeated)
{
subBuilder.WeakMergeFrom((IMessage)builder[field]);
}
if (field.FieldType == FieldType.Group)
{
input.ReadGroup(field.FieldNumber, subBuilder, extensionRegistry);
}
else
{
input.ReadMessage(subBuilder, extensionRegistry);
}
value = subBuilder.WeakBuild();
break;
}
case FieldType.Enum: {
int rawValue = input.ReadEnum();
value = field.EnumType.FindValueByNumber(rawValue);
// If the number isn't recognized as a valid value for this enum,
// drop it.
if (value == null)
{
MergeVarintField(fieldNumber, (ulong)rawValue);
return(true);
}
break;
}
default:
value = input.ReadPrimitiveField(field.FieldType);
break;
}
if (field.IsRepeated)
{
builder.WeakAddRepeatedField(field, value);
}
else
{
builder[field] = value;
}
}
return(true);
}
protected override bool ParseUnknownField(CodedInputStream input,
ExtensionRegistry extensionRegistry, uint tag)
{
FieldSet extensions = MessageBeingBuilt.Extensions;
WireFormat.WireType wireType = WireFormat.GetTagWireType(tag);
int fieldNumber = WireFormat.GetTagFieldNumber(tag);
IGeneratedExtensionLite extension = extensionRegistry[DefaultInstanceForType, fieldNumber];
bool unknown = false;
bool packed = false;
if (extension == null)
{
unknown = true; // Unknown field.
}
else if (wireType == FieldMappingAttribute.WireTypeFromFieldType(extension.Descriptor.FieldType, false /* isPacked */))
{
packed = false; // Normal, unpacked value.
}
else if (extension.Descriptor.IsRepeated &&
//?? just returns true ?? extension.Descriptor.type.isPackable() &&
wireType == FieldMappingAttribute.WireTypeFromFieldType(extension.Descriptor.FieldType, true /* isPacked */))
{
packed = true; // Packed value.
}
else
{
unknown = true; // Wrong wire type.
}
if (unknown) // Unknown field or wrong wire type. Skip.
{
return(input.SkipField(tag));
}
if (packed)
{
int length = (int)Math.Min(int.MaxValue, input.ReadRawVarint32());
int limit = input.PushLimit(length);
if (extension.Descriptor.FieldType == FieldType.Enum)
{
while (!input.ReachedLimit)
{
int rawValue = input.ReadEnum();
Object value =
extension.Descriptor.EnumType.FindValueByNumber(rawValue);
if (value == null)
{
// If the number isn't recognized as a valid value for this
// enum, drop it (don't even add it to unknownFields).
return(true);
}
extensions.AddRepeatedField(extension.Descriptor, value);
}
}
else
{
while (!input.ReachedLimit)
{
Object value = input.ReadPrimitiveField(extension.Descriptor.FieldType);
extensions.AddRepeatedField(extension.Descriptor, value);
}
}
input.PopLimit(limit);
}
else
{
Object value;
switch (extension.Descriptor.MappedType)
{
case MappedType.Message: {
IBuilderLite subBuilder = null;
if (!extension.Descriptor.IsRepeated)
{
IMessageLite existingValue = extensions[extension.Descriptor] as IMessageLite;
if (existingValue != null)
{
subBuilder = existingValue.WeakToBuilder();
}
}
if (subBuilder == null)
{
subBuilder = extension.MessageDefaultInstance.WeakCreateBuilderForType();
}
if (extension.Descriptor.FieldType == FieldType.Group)
{
input.ReadGroup(extension.Number, subBuilder, extensionRegistry);
}
else
{
input.ReadMessage(subBuilder, extensionRegistry);
}
value = subBuilder.WeakBuild();
break;
}
case MappedType.Enum:
int rawValue = input.ReadEnum();
value = extension.Descriptor.EnumType.FindValueByNumber(rawValue);
// If the number isn't recognized as a valid value for this enum,
// drop it.
if (value == null)
{
return(true);
}
break;
default:
value = input.ReadPrimitiveField(extension.Descriptor.FieldType);
break;
}
if (extension.Descriptor.IsRepeated)
{
extensions.AddRepeatedField(extension.Descriptor, value);
}
else
{
extensions[extension.Descriptor] = value;
}
}
return(true);
}
