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feat(types): add Fulu cell dissemination SSZ types #283

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feat(types): add Fulu cell dissemination SSZ types #283

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28a1189
feat(types): add Fulu cell dissemination SSZ types
lodekeeper-z Mar 27, 2026
bac3d85
style: wrap long line in PartialDataColumnHeader
lodekeeper-z Mar 27, 2026
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28 changes: 27 additions & 1 deletion src/consensus_types/fulu.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -92,7 +92,10 @@ pub const DataColumnSidecar = ssz.VariableContainerType(struct {
kzg_commitments: ssz.FixedListType(p.KZGCommitment, preset.MAX_BLOB_COMMITMENTS_PER_BLOCK),
kzg_proofs: ssz.FixedListType(p.KZGProof, preset.MAX_BLOB_COMMITMENTS_PER_BLOCK),
signed_block_header: SignedBeaconBlockHeader,
kzg_commitments_inclusion_proof: ssz.FixedVectorType(p.Bytes32, preset.KZG_COMMITMENTS_INCLUSION_PROOF_DEPTH),
kzg_commitments_inclusion_proof: ssz.FixedVectorType(
p.Bytes32,
preset.KZG_COMMITMENTS_INCLUSION_PROOF_DEPTH,
),
});

pub const MatrixEntry = ssz.FixedContainerType(struct {
Expand All @@ -102,6 +105,29 @@ pub const MatrixEntry = ssz.FixedContainerType(struct {
row_index: RowIndex,
});

// Cell Dissemination types (consensus-specs #4558)
pub const PartialDataColumnSidecar = ssz.VariableContainerType(struct {
cells_present_bitmap: ssz.BitListType(preset.MAX_BLOB_COMMITMENTS_PER_BLOCK),
partial_column: ssz.FixedListType(Cell, preset.MAX_BLOB_COMMITMENTS_PER_BLOCK),
kzg_proofs: ssz.FixedListType(p.KZGProof, preset.MAX_BLOB_COMMITMENTS_PER_BLOCK),
// Optional header, only sent on eager pushes
header: ssz.VariableListType(PartialDataColumnHeader, 1),
});

pub const PartialDataColumnPartsMetadata = ssz.VariableContainerType(struct {
available: ssz.BitListType(preset.MAX_BLOB_COMMITMENTS_PER_BLOCK),
requests: ssz.BitListType(preset.MAX_BLOB_COMMITMENTS_PER_BLOCK),
});

pub const PartialDataColumnHeader = ssz.VariableContainerType(struct {
kzg_commitments: ssz.FixedListType(p.KZGCommitment, preset.MAX_BLOB_COMMITMENTS_PER_BLOCK),
signed_block_header: SignedBeaconBlockHeader,
kzg_commitments_inclusion_proof: ssz.FixedVectorType(
p.Bytes32,
preset.KZG_COMMITMENTS_INCLUSION_PROOF_DEPTH,
),
});

// Light client types
pub const LightClientHeader = electra.LightClientHeader;
pub const LightClientBootstrap = electra.LightClientBootstrap;
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