93 lines
2.3 KiB
Python
93 lines
2.3 KiB
Python
import sys
|
|
import function_puller
|
|
|
|
|
|
def build_phase0_spec(sourcefile, outfile):
|
|
code_lines = []
|
|
code_lines.append("""
|
|
from typing import (
|
|
Any,
|
|
Dict,
|
|
List,
|
|
NewType,
|
|
Tuple,
|
|
)
|
|
from eth2spec.utils.minimal_ssz import *
|
|
from eth2spec.utils.bls import *
|
|
|
|
""")
|
|
for i in (1, 2, 3, 4, 8, 32, 48, 96):
|
|
code_lines.append("def int_to_bytes%d(x): return x.to_bytes(%d, 'little')" % (i, i))
|
|
|
|
code_lines.append("""
|
|
|
|
# stub, will get overwritten by real var
|
|
SLOTS_PER_EPOCH = 64
|
|
|
|
|
|
Slot = NewType('Slot', int) # uint64
|
|
Epoch = NewType('Epoch', int) # uint64
|
|
Shard = NewType('Shard', int) # uint64
|
|
ValidatorIndex = NewType('ValidatorIndex', int) # uint64
|
|
Gwei = NewType('Gwei', int) # uint64
|
|
Bytes32 = NewType('Bytes32', bytes) # bytes32
|
|
BLSPubkey = NewType('BLSPubkey', bytes) # bytes48
|
|
BLSSignature = NewType('BLSSignature', bytes) # bytes96
|
|
Store = None
|
|
""")
|
|
|
|
code_lines += function_puller.get_spec(sourcefile)
|
|
|
|
code_lines.append("""
|
|
# Monkey patch validator compute committee code
|
|
_compute_committee = compute_committee
|
|
committee_cache = {}
|
|
|
|
|
|
def compute_committee(indices: List[ValidatorIndex], seed: Bytes32, index: int, count: int) -> List[ValidatorIndex]:
|
|
param_hash = (hash_tree_root(indices), seed, index, count)
|
|
|
|
if param_hash in committee_cache:
|
|
return committee_cache[param_hash]
|
|
else:
|
|
ret = _compute_committee(indices, seed, index, count)
|
|
committee_cache[param_hash] = ret
|
|
return ret
|
|
|
|
|
|
# Monkey patch hash cache
|
|
_hash = hash
|
|
hash_cache = {}
|
|
|
|
|
|
def hash(x):
|
|
if x in hash_cache:
|
|
return hash_cache[x]
|
|
else:
|
|
ret = _hash(x)
|
|
hash_cache[x] = ret
|
|
return ret
|
|
|
|
# Access to overwrite spec constants based on configuration
|
|
def apply_constants_preset(preset: Dict[str, Any]):
|
|
global_vars = globals()
|
|
for k, v in preset.items():
|
|
global_vars[k] = v
|
|
|
|
# Deal with derived constants
|
|
global_vars['GENESIS_EPOCH'] = slot_to_epoch(GENESIS_SLOT)
|
|
|
|
# Initialize SSZ types again, to account for changed lengths
|
|
init_SSZ_types()
|
|
""")
|
|
|
|
with open(outfile, 'w') as out:
|
|
out.write("\n".join(code_lines))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
if len(sys.argv) < 3:
|
|
print("Usage: <source phase0> <output phase0 pyspec>")
|
|
build_phase0_spec(sys.argv[1], sys.argv[2])
|
|
|