357 lines
12 KiB
Python
357 lines
12 KiB
Python
import re
|
|
from function_puller import (
|
|
get_spec,
|
|
SpecObject,
|
|
)
|
|
from argparse import ArgumentParser
|
|
from typing import (
|
|
Dict,
|
|
Optional,
|
|
)
|
|
|
|
|
|
PHASE0_IMPORTS = '''from typing import (
|
|
Any, Dict, Set, Sequence, Tuple, Optional
|
|
)
|
|
|
|
from dataclasses import (
|
|
dataclass,
|
|
field,
|
|
)
|
|
|
|
from eth2spec.utils.ssz.ssz_impl import hash_tree_root
|
|
from eth2spec.utils.ssz.ssz_typing import (
|
|
boolean, Container, List, Vector, uint64,
|
|
Bytes1, Bytes4, Bytes8, Bytes32, Bytes48, Bytes96, Bitlist, Bitvector,
|
|
)
|
|
from eth2spec.utils.bls import (
|
|
bls_aggregate_signatures,
|
|
bls_aggregate_pubkeys,
|
|
bls_verify,
|
|
bls_sign,
|
|
)
|
|
|
|
from eth2spec.utils.hash_function import hash
|
|
'''
|
|
PHASE1_IMPORTS = '''from typing import (
|
|
Any, Dict, Set, Sequence, MutableSequence, NewType, Tuple, Union,
|
|
)
|
|
from math import (
|
|
log2,
|
|
)
|
|
|
|
from dataclasses import (
|
|
dataclass,
|
|
field,
|
|
)
|
|
|
|
from eth2spec.utils.ssz.ssz_impl import (
|
|
hash_tree_root,
|
|
is_zero,
|
|
)
|
|
from eth2spec.utils.ssz.ssz_typing import (
|
|
BasicValue, Elements, BaseBytes, BaseList, SSZType,
|
|
Container, List, Vector, ByteList, ByteVector, Bitlist, Bitvector, Bits,
|
|
Bytes1, Bytes4, Bytes8, Bytes32, Bytes48, Bytes96,
|
|
uint64, bit, boolean, byte,
|
|
)
|
|
from eth2spec.utils.bls import (
|
|
bls_aggregate_pubkeys,
|
|
bls_verify,
|
|
bls_verify_multiple,
|
|
bls_signature_to_G2,
|
|
)
|
|
|
|
from eth2spec.utils.hash_function import hash
|
|
|
|
|
|
SSZVariableName = str
|
|
GeneralizedIndex = NewType('GeneralizedIndex', int)
|
|
'''
|
|
SUNDRY_CONSTANTS_FUNCTIONS = '''
|
|
def ceillog2(x: uint64) -> int:
|
|
return (x - 1).bit_length()
|
|
'''
|
|
SUNDRY_FUNCTIONS = '''
|
|
# Monkey patch hash cache
|
|
_hash = hash
|
|
hash_cache: Dict[bytes, Bytes32] = {}
|
|
|
|
|
|
def get_eth1_data(distance: uint64) -> Bytes32:
|
|
return hash(distance)
|
|
|
|
|
|
def hash(x: bytes) -> Bytes32:
|
|
if x not in hash_cache:
|
|
hash_cache[x] = Bytes32(_hash(x))
|
|
return hash_cache[x]
|
|
|
|
|
|
# Monkey patch validator compute committee code
|
|
_compute_committee = compute_committee
|
|
committee_cache: Dict[Tuple[Bytes32, Bytes32, int, int], Sequence[ValidatorIndex]] = {}
|
|
|
|
|
|
def compute_committee(indices: Sequence[ValidatorIndex], # type: ignore
|
|
seed: Bytes32,
|
|
index: int,
|
|
count: int) -> Sequence[ValidatorIndex]:
|
|
param_hash = (hash(b''.join(index.to_bytes(length=4, byteorder='little') for index in indices)), seed, index, count)
|
|
|
|
if param_hash not in committee_cache:
|
|
committee_cache[param_hash] = _compute_committee(indices, seed, index, count)
|
|
return committee_cache[param_hash]
|
|
|
|
|
|
# Access to overwrite spec constants based on configuration
|
|
def apply_constants_preset(preset: Dict[str, Any]) -> None:
|
|
global_vars = globals()
|
|
for k, v in preset.items():
|
|
if k.startswith('DOMAIN_'):
|
|
global_vars[k] = DomainType(v) # domain types are defined as bytes in the configs
|
|
else:
|
|
global_vars[k] = v
|
|
|
|
# Deal with derived constants
|
|
global_vars['GENESIS_EPOCH'] = compute_epoch_at_slot(GENESIS_SLOT)
|
|
|
|
# Initialize SSZ types again, to account for changed lengths
|
|
init_SSZ_types()
|
|
'''
|
|
|
|
|
|
def remove_for_phase1(functions: Dict[str, str]):
|
|
for key, value in functions.items():
|
|
lines = value.split("\n")
|
|
lines = filter(lambda s: "[to be removed in phase 1]" not in s, lines)
|
|
functions[key] = "\n".join(lines)
|
|
|
|
|
|
def strip_comments(raw: str) -> str:
|
|
comment_line_regex = re.compile(r'^\s+# ')
|
|
lines = raw.split('\n')
|
|
out = []
|
|
for line in lines:
|
|
if not comment_line_regex.match(line):
|
|
if ' #' in line:
|
|
line = line[:line.index(' #')]
|
|
out.append(line)
|
|
return '\n'.join(out)
|
|
|
|
|
|
def objects_to_spec(functions: Dict[str, str],
|
|
custom_types: Dict[str, str],
|
|
constants: Dict[str, str],
|
|
ssz_objects: Dict[str, str],
|
|
inserts: Dict[str, str],
|
|
imports: Dict[str, str],
|
|
) -> str:
|
|
"""
|
|
Given all the objects that constitute a spec, combine them into a single pyfile.
|
|
"""
|
|
new_type_definitions = (
|
|
'\n\n'.join(
|
|
[
|
|
f"class {key}({value}):\n pass\n"
|
|
for key, value in custom_types.items()
|
|
]
|
|
)
|
|
)
|
|
for k in list(functions):
|
|
if "ceillog2" in k:
|
|
del functions[k]
|
|
functions_spec = '\n\n'.join(functions.values())
|
|
for k in list(constants.keys()):
|
|
if k.startswith('DOMAIN_'):
|
|
constants[k] = f"DomainType(({constants[k]}).to_bytes(length=4, byteorder='little'))"
|
|
if k == "BLS12_381_Q":
|
|
constants[k] += " # noqa: E501"
|
|
constants_spec = '\n'.join(map(lambda x: '%s = %s' % (x, constants[x]), constants))
|
|
ssz_objects_instantiation_spec = '\n\n'.join(ssz_objects.values())
|
|
ssz_objects_reinitialization_spec = (
|
|
'def init_SSZ_types() -> None:\n global_vars = globals()\n\n '
|
|
+ '\n\n '.join([strip_comments(re.sub(r'(?!\n\n)\n', r'\n ', value[:-1]))
|
|
for value in ssz_objects.values()])
|
|
+ '\n\n'
|
|
+ '\n'.join(map(lambda x: ' global_vars[\'%s\'] = %s' % (x, x), ssz_objects.keys()))
|
|
)
|
|
spec = (
|
|
imports
|
|
+ '\n\n' + new_type_definitions
|
|
+ '\n' + SUNDRY_CONSTANTS_FUNCTIONS
|
|
+ '\n\n' + constants_spec
|
|
+ '\n\n\n' + ssz_objects_instantiation_spec
|
|
+ '\n\n' + functions_spec
|
|
+ '\n' + SUNDRY_FUNCTIONS
|
|
+ '\n\n' + ssz_objects_reinitialization_spec
|
|
+ '\n'
|
|
)
|
|
# Handle @inserts
|
|
for key, value in inserts.items():
|
|
spec = re.sub('[ ]*# %s\\n' % key, value, spec)
|
|
return spec
|
|
|
|
|
|
def combine_functions(old_functions: Dict[str, str], new_functions: Dict[str, str]) -> Dict[str, str]:
|
|
for key, value in new_functions.items():
|
|
old_functions[key] = value
|
|
return old_functions
|
|
|
|
|
|
def combine_constants(old_constants: Dict[str, str], new_constants: Dict[str, str]) -> Dict[str, str]:
|
|
for key, value in new_constants.items():
|
|
old_constants[key] = value
|
|
return old_constants
|
|
|
|
|
|
ignored_dependencies = [
|
|
'bit', 'boolean', 'Vector', 'List', 'Container', 'Hash', 'BLSPubkey', 'BLSSignature', 'ByteList', 'ByteVector'
|
|
'Bytes1', 'Bytes4', 'Bytes32', 'Bytes48', 'Bytes96', 'Bitlist', 'Bitvector',
|
|
'uint8', 'uint16', 'uint32', 'uint64', 'uint128', 'uint256',
|
|
'bytes', 'byte', 'ByteVector' # to be removed after updating spec doc
|
|
]
|
|
|
|
|
|
def dependency_order_ssz_objects(objects: Dict[str, str], custom_types: Dict[str, str]) -> None:
|
|
"""
|
|
Determines which SSZ Object is dependent on which other and orders them appropriately
|
|
"""
|
|
items = list(objects.items())
|
|
for key, value in items:
|
|
dependencies = []
|
|
for line in value.split('\n'):
|
|
if not re.match(r'\s+\w+: .+', line):
|
|
continue # skip whitespace etc.
|
|
line = line[line.index(':') + 1:] # strip of field name
|
|
if '#' in line:
|
|
line = line[:line.index('#')] # strip of comment
|
|
dependencies.extend(re.findall(r'(\w+)', line)) # catch all legible words, potential dependencies
|
|
dependencies = filter(lambda x: '_' not in x and x.upper() != x, dependencies) # filter out constants
|
|
dependencies = filter(lambda x: x not in ignored_dependencies, dependencies)
|
|
dependencies = filter(lambda x: x not in custom_types, dependencies)
|
|
for dep in dependencies:
|
|
key_list = list(objects.keys())
|
|
for item in [dep, key] + key_list[key_list.index(dep)+1:]:
|
|
objects[item] = objects.pop(item)
|
|
|
|
|
|
def combine_ssz_objects(old_objects: Dict[str, str], new_objects: Dict[str, str], custom_types) -> Dict[str, str]:
|
|
"""
|
|
Takes in old spec and new spec ssz objects, combines them,
|
|
and returns the newer versions of the objects in dependency order.
|
|
"""
|
|
for key, value in new_objects.items():
|
|
if key in old_objects:
|
|
# remove trailing newline
|
|
old_objects[key] = old_objects[key]
|
|
# remove leading variable name
|
|
value = re.sub(r'^class [\w]*\(Container\):\n', '', value)
|
|
old_objects[key] = old_objects.get(key, '') + value
|
|
dependency_order_ssz_objects(old_objects, custom_types)
|
|
return old_objects
|
|
|
|
|
|
# inserts are handeled the same way as functions
|
|
combine_inserts = combine_functions
|
|
|
|
|
|
def combine_spec_objects(spec0: SpecObject, spec1: SpecObject) -> SpecObject:
|
|
"""
|
|
Takes in two spec variants (as tuples of their objects) and combines them using the appropriate combiner function.
|
|
"""
|
|
functions0, custom_types0, constants0, ssz_objects0, inserts0 = spec0
|
|
functions1, custom_types1, constants1, ssz_objects1, inserts1 = spec1
|
|
functions = combine_functions(functions0, functions1)
|
|
custom_types = combine_constants(custom_types0, custom_types1)
|
|
constants = combine_constants(constants0, constants1)
|
|
ssz_objects = combine_ssz_objects(ssz_objects0, ssz_objects1, custom_types)
|
|
inserts = combine_inserts(inserts0, inserts1)
|
|
return functions, custom_types, constants, ssz_objects, inserts
|
|
|
|
|
|
def build_phase0_spec(phase0_sourcefile: str, fork_choice_sourcefile: str,
|
|
v_guide_sourcefile: str, outfile: str=None) -> Optional[str]:
|
|
phase0_spec = get_spec(phase0_sourcefile)
|
|
fork_choice_spec = get_spec(fork_choice_sourcefile)
|
|
v_guide = get_spec(v_guide_sourcefile)
|
|
spec_objects = phase0_spec
|
|
for value in [fork_choice_spec, v_guide]:
|
|
spec_objects = combine_spec_objects(spec_objects, value)
|
|
spec = objects_to_spec(*spec_objects, PHASE0_IMPORTS)
|
|
if outfile is not None:
|
|
with open(outfile, 'w') as out:
|
|
out.write(spec)
|
|
return spec
|
|
|
|
|
|
def build_phase1_spec(phase0_beacon_sourcefile: str,
|
|
phase0_fork_choice_sourcefile: str,
|
|
merkle_proofs_sourcefile: str,
|
|
phase1_custody_sourcefile: str,
|
|
phase1_shard_sourcefile: str,
|
|
phase1_beacon_misc_sourcefile: str,
|
|
outfile: str=None) -> Optional[str]:
|
|
all_sourcefiles = (
|
|
phase0_beacon_sourcefile,
|
|
phase0_fork_choice_sourcefile,
|
|
merkle_proofs_sourcefile,
|
|
phase1_custody_sourcefile,
|
|
phase1_shard_sourcefile,
|
|
phase1_beacon_misc_sourcefile,
|
|
)
|
|
all_spescs = [get_spec(spec) for spec in all_sourcefiles]
|
|
for spec in all_spescs:
|
|
remove_for_phase1(spec[0])
|
|
spec_objects = all_spescs[0]
|
|
for value in all_spescs[1:]:
|
|
spec_objects = combine_spec_objects(spec_objects, value)
|
|
spec = objects_to_spec(*spec_objects, PHASE1_IMPORTS)
|
|
if outfile is not None:
|
|
with open(outfile, 'w') as out:
|
|
out.write(spec)
|
|
return spec
|
|
|
|
|
|
if __name__ == '__main__':
|
|
description = '''
|
|
Build the specs from the md docs.
|
|
If building phase 0:
|
|
1st argument is input /core/0_beacon-chain.md
|
|
2nd argument is input /core/0_fork-choice.md
|
|
3rd argument is input /core/0_beacon-chain-validator.md
|
|
4th argument is output spec.py
|
|
|
|
If building phase 1:
|
|
1st argument is input /core/0_beacon-chain.md
|
|
2nd argument is input /core/0_fork-choice.md
|
|
3rd argument is input /light_client/merkle_proofs.md
|
|
4th argument is input /core/1_custody-game.md
|
|
5th argument is input /core/1_shard-data-chains.md
|
|
6th argument is input /core/1_beacon-chain-misc.md
|
|
7th argument is output spec.py
|
|
'''
|
|
parser = ArgumentParser(description=description)
|
|
parser.add_argument("-p", "--phase", dest="phase", type=int, default=0, help="Build for phase #")
|
|
parser.add_argument(dest="files", help="Input and output files", nargs="+")
|
|
|
|
args = parser.parse_args()
|
|
if args.phase == 0:
|
|
if len(args.files) == 4:
|
|
build_phase0_spec(*args.files)
|
|
else:
|
|
print(" Phase 0 requires spec, forkchoice, and v-guide inputs as well as an output file.")
|
|
elif args.phase == 1:
|
|
if len(args.files) == 7:
|
|
build_phase1_spec(*args.files)
|
|
else:
|
|
print(
|
|
" Phase 1 requires input files as well as an output file:\n"
|
|
"\t core/phase_0: (0_beacon-chain.md, 0_fork-choice.md)\n"
|
|
"\t light_client: (merkle_proofs.md)\n"
|
|
"\t core/phase_1: (1_custody-game.md, 1_shard-data-chains.md, 1_beacon-chain-misc.md)\n"
|
|
"\t and output.py"
|
|
)
|
|
else:
|
|
print("Invalid phase: {0}".format(args.phase))
|