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72 lines
2.5 KiB
Python
72 lines
2.5 KiB
Python
"""
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SSZ proto templating rules.
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These rules allow for variable substitution for hardcoded tag values like ssz-size and ssz-max.
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"""
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####### Configuration #######
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mainnet = {
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"block_roots.size": "8192,32", # SLOTS_PER_HISTORICAL_ROOT, [32]byte
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"state_roots.size": "8192,32", # SLOTS_PER_HISTORICAL_ROOT, [32]byte
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"eth1_data_votes.size": "2048", # SLOTS_PER_ETH1_VOTING_PERIOD
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"randao_mixes.size": "65536,32", # EPOCHS_PER_HISTORICAL_VECTOR, [32]byte
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"previous_epoch_attestations.max": "4096", # MAX_ATTESTATIONS * SLOTS_PER_EPOCH
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"current_epoch_attestations.max": "4096", # MAX_ATTESTATIONS * SLOTS_PER_EPOCH
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"slashings.size": "8192", # EPOCHS_PER_SLASHINGS_VECTOR
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"sync_committee_bits.size": "512", #SYNC_COMMITTEE_SIZE
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"sync_committee_bytes.size": "64",
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"sync_committee_bits.type": "github.com/prysmaticlabs/go-bitfield.Bitvector512",
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"sync_committee_aggregate_bytes.size": "16",
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"sync_committee_aggregate_bits.type": "github.com/prysmaticlabs/go-bitfield.Bitvector128",
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}
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minimal = {
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"block_roots.size": "64,32",
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"state_roots.size": "64,32",
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"eth1_data_votes.size": "32",
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"randao_mixes.size": "64,32",
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"previous_epoch_attestations.max": "1024",
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"current_epoch_attestations.max": "1024",
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"slashings.size": "64",
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"sync_committee_bits.size": "32",
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"sync_committee_bytes.size": "4",
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"sync_committee_bits.type": "github.com/prysmaticlabs/go-bitfield.Bitvector32",
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"sync_committee_aggregate_bytes.size": "1",
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"sync_committee_aggregate_bits.type": "github.com/prysmaticlabs/go-bitfield.Bitvector8",
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}
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###### Rules definitions #######
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def _ssz_proto_files_impl(ctx):
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"""
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ssz_proto_files implementation performs expand_template based on the value of "config".
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"""
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outputs = []
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if (ctx.attr.config.lower() == "mainnet"):
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subs = mainnet
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elif (ctx.attr.config.lower() == "minimal"):
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subs = minimal
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else:
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fail("%s is an unknown configuration" % ctx.attr.config)
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for src in ctx.attr.srcs:
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output = ctx.actions.declare_file(src.files.to_list()[0].basename)
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outputs.append(output)
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ctx.actions.expand_template(
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template = src.files.to_list()[0],
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output = output,
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substitutions = subs,
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)
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return [DefaultInfo(files = depset(outputs))]
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ssz_proto_files = rule(
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implementation = _ssz_proto_files_impl,
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attrs = {
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"srcs": attr.label_list(mandatory = True, allow_files = [".proto"]),
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"config": attr.string(mandatory = True),
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},
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)
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