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doc: Document Seq064K #1046

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doc: Document Seq064K #1046

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doc: Document Seq064K
average-gary Jul 9, 2024
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Merge branch 'main' into docstring-sequences
average-gary Sep 4, 2024
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9 changes: 9 additions & 0 deletions protocols/v2/binary-sv2/no-serde-sv2/codec/src/datatypes/non_copy_data_types/seq_inner.rs
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Expand Up @@ -95,6 +95,15 @@ impl<'a, T: GetSize> GetSize for Seq0255<'a, T> {
}
}

/// Fixed size data sequence up to a length of 65535
///
/// Byte Length Calculation:
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what is this referring to? where this byte calculation is happening?

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@Fi3 Fi3 Sep 6, 2024 •
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this is how is defined in spec. Actual byte calculation happen in get_size.

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/// Return the encoded byte size of an `Encodable` comprehensive of the header, if any
pub trait GetSize {
    fn get_size(&self) -> usize;
}

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So should this doc live here or in the binary-sv2 and link to it?
another question please, what does L refer to?

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Which L ?

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a ok the one in docs

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so that doc come directly from the spec and L stand for the number of elments in the sequnce
https://github.com/stratum-mining/sv2-spec/blob/main/03-Protocol-Overview.md#31-data-types-mapping

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yea, its mentioned here twice Decsription: 2-byte length L, unsigned little-endian integer 16-bits, followed by a sequence of L elements of type T. Allowed range of length is 0 to 65535.

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btw yes we could link the the GetSize and SizeHint trait in that doc. GetSize is implemented for Encodable and return the total len SizeHint is implemented for Decodable and retutrn total len - header len

/// - For fixed-size T: 2 + LENGTH * size_of::<T>()
/// - For variable-length T: 2 + seq.map(|x| x.length()).sum()
/// Decsription: 2-byte length L, unsigned little-endian integer 16-bits, followed by a sequence of L elements of type T. Allowed range of length is 0 to 65535.
///
/// Used for listing channel ids, tx short hashes, tx hashes, list indexes, and full transaction data.
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This is great. Is it possible to also explain why this type is used in the mentioned scenarios?

///
/// The liftime is here only for type compatibility with serde-sv2
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct Seq064K<'a, T>(pub(crate) Vec<T>, PhantomData<&'a T>);
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Its still not clear to me what the Vec<T> and PhantomData represent here tbh

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1 change: 1 addition & 0 deletions protocols/v2/binary-sv2/serde-sv2/src/primitives/sequences/seq064k.rs
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Expand Up @@ -9,6 +9,7 @@ use crate::{
use alloc::vec::Vec;
use serde::{ser, ser::SerializeTuple, Deserialize, Deserializer, Serialize};

/// See `binary_sv2::Seq064k`
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Would this link to the binary_sv2::Seq064k in docs.rs ?

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@jbesraa, good eye/thought process. The answer is no, but check out this comment I left on the #970 discussion.

Let me know your thoughts on making this part of our documentation standard.

#[derive(Debug, Clone)]
pub struct Seq064K<'s, T: Clone + Serialize + TryFromBSlice<'s>> {
seq: Option<Seq<'s, T>>,
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