/// <summary>
/// Attempt to read a field tag, returning 0 if we have reached the end
/// of the input data. Protocol message parsers use this to read tags,
/// since a protocol message may legally end wherever a tag occurs, and
/// zero is not a valid tag number.
/// </summary>
public uint ReadTag()
{
if (IsAtEnd)
{
lastTag = 0;
return(0);
}
lastTag = ReadRawVarint32();
if (lastTag == 0)
{
// If we actually read zero, that's not a valid tag.
throw InvalidProtocolBufferException.InvalidTag();
}
return(lastTag);
}
/// <summary>
/// Attempt to read a field tag, returning 0 if we have reached the end
/// of the input data. Protocol message parsers use this to read tags,
/// since a protocol message may legally end wherever a tag occurs, and
/// zero is not a valid tag number.
/// </summary>
public uint ReadTag()
{
if (bufferPos == bufferSize && !RefillBuffer(false))
{
lastTag = 0;
return(0);
}
lastTag = ReadRawVarint32();
if (lastTag == 0)
{
// If we actually read zero, that's not a valid tag.
throw InvalidProtocolBufferException.InvalidTag();
}
return(lastTag);
}
public bool ReadTag(out uint fieldTag, out string fieldName)
{
fieldTag = 0;
if (hasNextTag)
{
fieldName = nextTag;
lastTag = fieldName;
hasNextTag = false;
return(true);
}
if (IsAtEnd)
{
fieldName = null;
lastTag = fieldName;
return(false);
}
if (tokenizer.TryConsume("}"))
{
fieldName = null;
lastTag = "}";
return(false);
}
if (tokenizer.TryConsume(">"))
{
fieldName = null;
lastTag = ">";
return(false);
}
fieldName = tokenizer.ConsumeIdentifier();
lastTag = fieldName;
if (lastTag == null)
{
// If we actually read zero, that's not a valid tag.
throw InvalidProtocolBufferException.InvalidTag();
}
return(true);
}
public bool ReadTag(out uint fieldTag, out string fieldName)
{
fieldName = null;
if (this.hasNextTag)
{
fieldTag = this.nextTag;
this.lastTag = fieldTag;
this.hasNextTag = false;
return(true);
}
if (this.IsAtEnd)
{
fieldTag = 0u;
this.lastTag = fieldTag;
return(false);
}
fieldTag = this.ReadRawVarint32();
this.lastTag = fieldTag;
if (this.lastTag == 0u)
{
throw InvalidProtocolBufferException.InvalidTag();
}
return(true);
}
