Refactor `setup.py` (#3393)

* Refactor setup.py

* Update doc with the new file path

* Rearrange spec_builders

* Update doc
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Hsiao-Wei Wang 2023-06-26 18:01:56 +08:00 committed by GitHub
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16 changed files with 863 additions and 797 deletions

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@ -53,17 +53,17 @@ For example, if the latest fork is Capella, use `./specs/capella` content as you
### 4. Add `fork.md`
You can refer to the previous fork's `fork.md` file.
### 5. Make it executable
- Update [`constants.py`](https://github.com/ethereum/consensus-specs/blob/dev/tests/core/pyspec/eth2spec/test/helpers/constants.py) with the new feature name.
- Update [`setup.py`](https://github.com/ethereum/consensus-specs/blob/dev/setup.py):
- Add a new `SpecBuilder` with the new feature name constant. e.g., `EIP9999SpecBuilder`
- Add the new `SpecBuilder` to `spec_builders` list.
- Add the path of the new markdown files in `finalize_options` function.
- Update Pyspec [`constants.py`](https://github.com/ethereum/consensus-specs/blob/dev/tests/core/pyspec/eth2spec/test/helpers/constants.py) with the new feature name.
- Update helpers for [`setup.py`](https://github.com/ethereum/consensus-specs/blob/dev/setup.py) for building the spec:
- Update [`pysetup/constants.py`](https://github.com/ethereum/consensus-specs/blob/dev/constants.py) with the new feature name as Pyspec `constants.py` defined.
- Update [`pysetup/spec_builders/__init__.py`](https://github.com/ethereum/consensus-specs/blob/dev/pysetup/spec_builders/__init__.py). Implement a new `<FEATURE_NAME>SpecBuilder` in `pysetup/spec_builders/<FEATURE_NAME>.py` with the new feature name. e.g., `EIP9999SpecBuilder`. Append it to the `spec_builders` list.
- Update [`pysetup/md_doc_paths.py`](https://github.com/ethereum/consensus-specs/blob/dev/pysetup/md_doc_paths.py): add the path of the new markdown files in `get_md_doc_paths` function if needed.
## B: Make it executable for pytest and test generator
### 1. Add `light-client/*` docs if you updated the content of `BeaconBlock`
### 1. [Optional] Add `light-client/*` docs if you updated the content of `BeaconBlock`
- You can refer to the previous fork's `light-client/*` file.
- Add the path of the new markdown files in `setup.py`'s `finalize_options` function.
- Add the path of the new markdown files in [`pysetup/md_doc_paths.py`](https://github.com/ethereum/consensus-specs/blob/dev/pysetup/md_doc_paths.py)'s `get_md_doc_paths` function.
### 2. Add the mainnet and minimal presets and update the configs
- Add presets: `presets/mainnet/<new-feature-name>.yaml` and `presets/minimal/<new-feature-name>.yaml`

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pysetup/constants.py Normal file
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@ -0,0 +1,32 @@
# Definitions in context.py
PHASE0 = 'phase0'
ALTAIR = 'altair'
BELLATRIX = 'bellatrix'
CAPELLA = 'capella'
DENEB = 'deneb'
EIP6110 = 'eip6110'
WHISK = 'whisk'
# The helper functions that are used when defining constants
CONSTANT_DEP_SUNDRY_CONSTANTS_FUNCTIONS = '''
def ceillog2(x: int) -> uint64:
if x < 1:
raise ValueError(f"ceillog2 accepts only positive values, x={x}")
return uint64((x - 1).bit_length())
def floorlog2(x: int) -> uint64:
if x < 1:
raise ValueError(f"floorlog2 accepts only positive values, x={x}")
return uint64(x.bit_length() - 1)
'''
OPTIMIZED_BLS_AGGREGATE_PUBKEYS = '''
def eth_aggregate_pubkeys(pubkeys: Sequence[BLSPubkey]) -> BLSPubkey:
return bls.AggregatePKs(pubkeys)
'''
ETH2_SPEC_COMMENT_PREFIX = "eth2spec:"

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pysetup/helpers.py Normal file
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@ -0,0 +1,253 @@
import re
from typing import TypeVar, Dict
import textwrap
from functools import reduce
from .constants import CONSTANT_DEP_SUNDRY_CONSTANTS_FUNCTIONS
from .spec_builders import spec_builders
from .md_doc_paths import PREVIOUS_FORK_OF
from .typing import (
ProtocolDefinition,
SpecObject,
VariableDefinition,
)
def collect_prev_forks(fork: str) -> list[str]:
forks = [fork]
while True:
fork = PREVIOUS_FORK_OF[fork]
if fork is None:
return forks
forks.append(fork)
def is_byte_vector(value: str) -> bool:
return value.startswith(('ByteVector'))
def make_function_abstract(protocol_def: ProtocolDefinition, key: str):
function = protocol_def.functions[key].split('"""')
protocol_def.functions[key] = function[0] + "..."
def objects_to_spec(preset_name: str,
spec_object: SpecObject,
fork: str,
ordered_class_objects: 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" if not is_byte_vector(value) else f"class {key}({value}): # type: ignore\n pass\n"
for key, value in spec_object.custom_types.items()
]
)
)
# Collect builders with the reversed previous forks
# e.g. `[bellatrix, altair, phase0]` -> `[phase0, altair, bellatrix]`
builders = [spec_builders[fork] for fork in collect_prev_forks(fork)[::-1]]
def format_protocol(protocol_name: str, protocol_def: ProtocolDefinition) -> str:
abstract_functions = ["verify_and_notify_new_payload"]
for key in protocol_def.functions.keys():
if key in abstract_functions:
make_function_abstract(protocol_def, key)
protocol = f"class {protocol_name}(Protocol):"
for fn_source in protocol_def.functions.values():
fn_source = fn_source.replace("self: "+protocol_name, "self")
protocol += "\n\n" + textwrap.indent(fn_source, " ")
return protocol
protocols_spec = '\n\n\n'.join(format_protocol(k, v) for k, v in spec_object.protocols.items())
for k in list(spec_object.functions):
if k in [
"ceillog2",
"floorlog2",
"compute_merkle_proof_for_block_body",
"compute_merkle_proof_for_state",
]:
del spec_object.functions[k]
functions = reduce(lambda fns, builder: builder.implement_optimizations(fns), builders, spec_object.functions)
functions_spec = '\n\n\n'.join(functions.values())
# Access global dict of config vars for runtime configurables
for name in spec_object.config_vars.keys():
functions_spec = re.sub(r"\b%s\b" % name, 'config.' + name, functions_spec)
def format_config_var(name: str, vardef: VariableDefinition) -> str:
if vardef.type_name is None:
out = f'{name}={vardef.value},'
else:
out = f'{name}={vardef.type_name}({vardef.value}),'
if vardef.comment is not None:
out += f' # {vardef.comment}'
return out
config_spec = 'class Configuration(NamedTuple):\n'
config_spec += ' PRESET_BASE: str\n'
config_spec += '\n'.join(f' {k}: {v.type_name if v.type_name is not None else "int"}'
for k, v in spec_object.config_vars.items())
config_spec += '\n\n\nconfig = Configuration(\n'
config_spec += f' PRESET_BASE="{preset_name}",\n'
config_spec += '\n'.join(' ' + format_config_var(k, v) for k, v in spec_object.config_vars.items())
config_spec += '\n)\n'
def format_constant(name: str, vardef: VariableDefinition) -> str:
if vardef.type_name is None:
if vardef.type_hint is None:
out = f'{name} = {vardef.value}'
else:
out = f'{name}: {vardef.type_hint} = {vardef.value}'
else:
out = f'{name} = {vardef.type_name}({vardef.value})'
if vardef.comment is not None:
out += f' # {vardef.comment}'
return out
# Merge all constant objects
hardcoded_ssz_dep_constants = reduce(lambda obj, builder: {**obj, **builder.hardcoded_ssz_dep_constants()}, builders, {})
hardcoded_custom_type_dep_constants = reduce(lambda obj, builder: {**obj, **builder.hardcoded_custom_type_dep_constants(spec_object)}, builders, {})
# Concatenate all strings
imports = reduce(lambda txt, builder: (txt + "\n\n" + builder.imports(preset_name) ).strip("\n"), builders, "")
preparations = reduce(lambda txt, builder: (txt + "\n\n" + builder.preparations() ).strip("\n"), builders, "")
sundry_functions = reduce(lambda txt, builder: (txt + "\n\n" + builder.sundry_functions() ).strip("\n"), builders, "")
# Keep engine from the most recent fork
execution_engine_cls = reduce(lambda txt, builder: builder.execution_engine_cls() or txt, builders, "")
constant_vars_spec = '# Constant vars\n' + '\n'.join(format_constant(k, v) for k, v in spec_object.constant_vars.items())
preset_vars_spec = '# Preset vars\n' + '\n'.join(format_constant(k, v) for k, v in spec_object.preset_vars.items())
ordered_class_objects_spec = '\n\n\n'.join(ordered_class_objects.values())
ssz_dep_constants = '\n'.join(map(lambda x: '%s = %s' % (x, hardcoded_ssz_dep_constants[x]), hardcoded_ssz_dep_constants))
ssz_dep_constants_verification = '\n'.join(map(lambda x: 'assert %s == %s' % (x, spec_object.ssz_dep_constants[x]), hardcoded_ssz_dep_constants))
custom_type_dep_constants = '\n'.join(map(lambda x: '%s = %s' % (x, hardcoded_custom_type_dep_constants[x]), hardcoded_custom_type_dep_constants))
spec_strs = [
imports,
preparations,
f"fork = \'{fork}\'\n",
# The constants that some SSZ containers require. Need to be defined before `new_type_definitions`
custom_type_dep_constants,
new_type_definitions,
CONSTANT_DEP_SUNDRY_CONSTANTS_FUNCTIONS,
# The constants that some SSZ containers require. Need to be defined before `constants_spec`
ssz_dep_constants,
constant_vars_spec,
preset_vars_spec,
config_spec,
ordered_class_objects_spec,
protocols_spec,
functions_spec,
sundry_functions,
execution_engine_cls,
# Since some constants are hardcoded in setup.py, the following assertions verify that the hardcoded constants are
# as same as the spec definition.
ssz_dep_constants_verification,
]
return "\n\n\n".join([str.strip("\n") for str in spec_strs if str]) + "\n"
def combine_protocols(old_protocols: Dict[str, ProtocolDefinition],
new_protocols: Dict[str, ProtocolDefinition]) -> Dict[str, ProtocolDefinition]:
for key, value in new_protocols.items():
if key not in old_protocols:
old_protocols[key] = value
else:
functions = combine_dicts(old_protocols[key].functions, value.functions)
old_protocols[key] = ProtocolDefinition(functions=functions)
return old_protocols
T = TypeVar('T')
def combine_dicts(old_dict: Dict[str, T], new_dict: Dict[str, T]) -> Dict[str, T]:
return {**old_dict, **new_dict}
ignored_dependencies = [
'bit', 'boolean', 'Vector', 'List', 'Container', 'BLSPubkey', 'BLSSignature',
'Bytes1', 'Bytes4', 'Bytes8', 'Bytes20', 'Bytes32', 'Bytes48', 'Bytes96', 'Bitlist', 'Bitvector',
'uint8', 'uint16', 'uint32', 'uint64', 'uint128', 'uint256',
'bytes', 'byte', 'ByteList', 'ByteVector',
'Dict', 'dict', 'field', 'ceillog2', 'floorlog2', 'Set',
'Optional', 'Sequence',
]
def dependency_order_class_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():
old_objects[key] = value
return old_objects
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.
"""
protocols = combine_protocols(spec0.protocols, spec1.protocols)
functions = combine_dicts(spec0.functions, spec1.functions)
custom_types = combine_dicts(spec0.custom_types, spec1.custom_types)
constant_vars = combine_dicts(spec0.constant_vars, spec1.constant_vars)
preset_vars = combine_dicts(spec0.preset_vars, spec1.preset_vars)
config_vars = combine_dicts(spec0.config_vars, spec1.config_vars)
ssz_dep_constants = combine_dicts(spec0.ssz_dep_constants, spec1.ssz_dep_constants)
ssz_objects = combine_ssz_objects(spec0.ssz_objects, spec1.ssz_objects, custom_types)
dataclasses = combine_dicts(spec0.dataclasses, spec1.dataclasses)
return SpecObject(
functions=functions,
protocols=protocols,
custom_types=custom_types,
constant_vars=constant_vars,
preset_vars=preset_vars,
config_vars=config_vars,
ssz_dep_constants=ssz_dep_constants,
ssz_objects=ssz_objects,
dataclasses=dataclasses,
)
def parse_config_vars(conf: Dict[str, str]) -> Dict[str, str]:
"""
Parses a dict of basic str/int/list types into a dict for insertion into the spec code.
"""
out: Dict[str, str] = dict()
for k, v in conf.items():
if isinstance(v, str) and (v.startswith("0x") or k == 'PRESET_BASE' or k == 'CONFIG_NAME'):
# Represent byte data with string, to avoid misinterpretation as big-endian int.
# Everything except PRESET_BASE and CONFIG_NAME is either byte data or an integer.
out[k] = f"'{v}'"
else:
out[k] = str(int(v))
return out

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import os
from .constants import (
PHASE0,
ALTAIR,
BELLATRIX,
CAPELLA,
DENEB,
EIP6110,
WHISK,
)
PREVIOUS_FORK_OF = {
PHASE0: None,
ALTAIR: PHASE0,
BELLATRIX: ALTAIR,
CAPELLA: BELLATRIX,
DENEB: CAPELLA,
EIP6110: DENEB,
WHISK: CAPELLA,
}
ALL_FORKS = list(PREVIOUS_FORK_OF.keys())
IGNORE_SPEC_FILES = [
"specs/phase0/deposit-contract.md"
]
EXTRA_SPEC_FILES = {
BELLATRIX: "sync/optimistic.md"
}
def is_post_fork(a, b) -> bool:
"""
Returns true if fork a is after b, or if a == b
"""
if a == b:
return True
prev_fork = PREVIOUS_FORK_OF[a]
if prev_fork == b:
return True
elif prev_fork == None:
return False
else:
return is_post_fork(prev_fork, b)
def get_fork_directory(fork):
dir1 = f'specs/{fork}'
if os.path.exists(dir1):
return dir1
dir2 = f'specs/_features/{fork}'
if os.path.exists(dir2):
return dir2
raise FileNotFoundError(f"No directory found for fork: {fork}")
def get_md_doc_paths(spec_fork: str) -> str:
md_doc_paths = ""
for fork in ALL_FORKS:
if is_post_fork(spec_fork, fork):
# Append all files in fork directory recursively
for root, dirs, files in os.walk(get_fork_directory(fork)):
for filename in files:
filepath = os.path.join(root, filename)
if filepath.endswith('.md') and filepath not in IGNORE_SPEC_FILES:
md_doc_paths += filepath + "\n"
# Append extra files if any
if fork in EXTRA_SPEC_FILES:
md_doc_paths += EXTRA_SPEC_FILES[fork] + "\n"
return md_doc_paths

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@ -0,0 +1,16 @@
from .phase0 import Phase0SpecBuilder
from .altair import AltairSpecBuilder
from .bellatrix import BellatrixSpecBuilder
from .capella import CapellaSpecBuilder
from .deneb import DenebSpecBuilder
from .eip6110 import EIP6110SpecBuilder
from .whisk import WhiskSpecBuilder
spec_builders = {
builder.fork: builder
for builder in (
Phase0SpecBuilder, AltairSpecBuilder, BellatrixSpecBuilder, CapellaSpecBuilder, DenebSpecBuilder,
EIP6110SpecBuilder, WhiskSpecBuilder,
)
}

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from typing import Dict
from .base import BaseSpecBuilder
from ..constants import ALTAIR, OPTIMIZED_BLS_AGGREGATE_PUBKEYS
class AltairSpecBuilder(BaseSpecBuilder):
fork: str = ALTAIR
@classmethod
def imports(cls, preset_name: str) -> str:
return f'''
from typing import NewType, Union as PyUnion
from eth2spec.phase0 import {preset_name} as phase0
from eth2spec.test.helpers.merkle import build_proof
from eth2spec.utils.ssz.ssz_typing import Path
'''
@classmethod
def preparations(cls):
return '''
SSZVariableName = str
GeneralizedIndex = NewType('GeneralizedIndex', int)
'''
@classmethod
def sundry_functions(cls) -> str:
return '''
def get_generalized_index(ssz_class: Any, *path: Sequence[PyUnion[int, SSZVariableName]]) -> GeneralizedIndex:
ssz_path = Path(ssz_class)
for item in path:
ssz_path = ssz_path / item
return GeneralizedIndex(ssz_path.gindex())
def compute_merkle_proof_for_state(state: BeaconState,
index: GeneralizedIndex) -> Sequence[Bytes32]:
return build_proof(state.get_backing(), index)'''
@classmethod
def hardcoded_ssz_dep_constants(cls) -> Dict[str, str]:
return {
'FINALIZED_ROOT_INDEX': 'GeneralizedIndex(105)',
'CURRENT_SYNC_COMMITTEE_INDEX': 'GeneralizedIndex(54)',
'NEXT_SYNC_COMMITTEE_INDEX': 'GeneralizedIndex(55)',
}
@classmethod
def implement_optimizations(cls, functions: Dict[str, str]) -> Dict[str, str]:
if "eth_aggregate_pubkeys" in functions:
functions["eth_aggregate_pubkeys"] = OPTIMIZED_BLS_AGGREGATE_PUBKEYS.strip()
return functions

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from abc import ABC, abstractmethod
from typing import Sequence, Dict
from pathlib import Path
class BaseSpecBuilder(ABC):
@property
@abstractmethod
def fork(self) -> str:
raise NotImplementedError()
@classmethod
def imports(cls, preset_name: str) -> str:
"""
Import objects from other libraries.
"""
return ""
@classmethod
def preparations(cls) -> str:
"""
Define special types/constants for building pyspec or call functions.
"""
return ""
@classmethod
def sundry_functions(cls) -> str:
"""
The functions that are (1) defined abstractly in specs or (2) adjusted for getting better performance.
"""
return ""
@classmethod
def execution_engine_cls(cls) -> str:
return ""
@classmethod
def hardcoded_ssz_dep_constants(cls) -> Dict[str, str]:
"""
The constants that are required for SSZ objects.
"""
return {}
@classmethod
def hardcoded_custom_type_dep_constants(cls, spec_object) -> Dict[str, str]: # TODO
"""
The constants that are required for custom types.
"""
return {}
@classmethod
def implement_optimizations(cls, functions: Dict[str, str]) -> Dict[str, str]:
return functions

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from .base import BaseSpecBuilder
from ..constants import BELLATRIX
class BellatrixSpecBuilder(BaseSpecBuilder):
fork: str = BELLATRIX
@classmethod
def imports(cls, preset_name: str):
return f'''
from typing import Protocol
from eth2spec.altair import {preset_name} as altair
from eth2spec.utils.ssz.ssz_typing import Bytes8, Bytes20, ByteList, ByteVector
'''
@classmethod
def sundry_functions(cls) -> str:
return """
ExecutionState = Any
def get_pow_block(hash: Bytes32) -> Optional[PowBlock]:
return PowBlock(block_hash=hash, parent_hash=Bytes32(), total_difficulty=uint256(0))
def get_execution_state(_execution_state_root: Bytes32) -> ExecutionState:
pass
def get_pow_chain_head() -> PowBlock:
pass"""
@classmethod
def execution_engine_cls(cls) -> str:
return """
class NoopExecutionEngine(ExecutionEngine):
def notify_new_payload(self: ExecutionEngine, execution_payload: ExecutionPayload) -> bool:
return True
def notify_forkchoice_updated(self: ExecutionEngine,
head_block_hash: Hash32,
safe_block_hash: Hash32,
finalized_block_hash: Hash32,
payload_attributes: Optional[PayloadAttributes]) -> Optional[PayloadId]:
pass
def get_payload(self: ExecutionEngine, payload_id: PayloadId) -> GetPayloadResponse:
# pylint: disable=unused-argument
raise NotImplementedError("no default block production")
def is_valid_block_hash(self: ExecutionEngine, execution_payload: ExecutionPayload) -> bool:
return True
def verify_and_notify_new_payload(self: ExecutionEngine,
new_payload_request: NewPayloadRequest) -> bool:
return True
EXECUTION_ENGINE = NoopExecutionEngine()"""
@classmethod
def hardcoded_custom_type_dep_constants(cls, spec_object) -> str:
return {
'MAX_BYTES_PER_TRANSACTION': spec_object.preset_vars['MAX_BYTES_PER_TRANSACTION'].value,
}

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from typing import Dict
from .base import BaseSpecBuilder
from ..constants import CAPELLA
class CapellaSpecBuilder(BaseSpecBuilder):
fork: str = CAPELLA
@classmethod
def imports(cls, preset_name: str):
return f'''
from eth2spec.bellatrix import {preset_name} as bellatrix
'''
@classmethod
def sundry_functions(cls) -> str:
return '''
def compute_merkle_proof_for_block_body(body: BeaconBlockBody,
index: GeneralizedIndex) -> Sequence[Bytes32]:
return build_proof(body.get_backing(), index)'''
@classmethod
def hardcoded_ssz_dep_constants(cls) -> Dict[str, str]:
return {
'EXECUTION_PAYLOAD_INDEX': 'GeneralizedIndex(25)',
}

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from .base import BaseSpecBuilder
from ..constants import DENEB
class DenebSpecBuilder(BaseSpecBuilder):
fork: str = DENEB
@classmethod
def imports(cls, preset_name: str):
return f'''
from eth2spec.capella import {preset_name} as capella
'''
@classmethod
def preparations(cls):
return '''
T = TypeVar('T') # For generic function
'''
@classmethod
def sundry_functions(cls) -> str:
return '''
def retrieve_blobs_and_proofs(beacon_block_root: Root) -> PyUnion[Tuple[Blob, KZGProof], Tuple[str, str]]:
# pylint: disable=unused-argument
return ("TEST", "TEST")'''
@classmethod
def execution_engine_cls(cls) -> str:
return """
class NoopExecutionEngine(ExecutionEngine):
def notify_new_payload(self: ExecutionEngine,
execution_payload: ExecutionPayload,
parent_beacon_block_root: Root) -> bool:
return True
def notify_forkchoice_updated(self: ExecutionEngine,
head_block_hash: Hash32,
safe_block_hash: Hash32,
finalized_block_hash: Hash32,
payload_attributes: Optional[PayloadAttributes]) -> Optional[PayloadId]:
pass
def get_payload(self: ExecutionEngine, payload_id: PayloadId) -> GetPayloadResponse:
# pylint: disable=unused-argument
raise NotImplementedError("no default block production")
def is_valid_block_hash(self: ExecutionEngine,
execution_payload: ExecutionPayload,
parent_beacon_block_root: Root) -> bool:
return True
def is_valid_versioned_hashes(self: ExecutionEngine, new_payload_request: NewPayloadRequest) -> bool:
return True
def verify_and_notify_new_payload(self: ExecutionEngine,
new_payload_request: NewPayloadRequest) -> bool:
return True
EXECUTION_ENGINE = NoopExecutionEngine()"""
@classmethod
def hardcoded_custom_type_dep_constants(cls, spec_object) -> str:
return {
'BYTES_PER_FIELD_ELEMENT': spec_object.constant_vars['BYTES_PER_FIELD_ELEMENT'].value,
'FIELD_ELEMENTS_PER_BLOB': spec_object.preset_vars['FIELD_ELEMENTS_PER_BLOB'].value,
'MAX_BLOBS_PER_BLOCK': spec_object.preset_vars['MAX_BLOBS_PER_BLOCK'].value,
}

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@ -0,0 +1,12 @@
from .base import BaseSpecBuilder
from ..constants import EIP6110
class EIP6110SpecBuilder(BaseSpecBuilder):
fork: str = EIP6110
@classmethod
def imports(cls, preset_name: str):
return f'''
from eth2spec.deneb import {preset_name} as deneb
'''

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@ -0,0 +1,105 @@
from .base import BaseSpecBuilder
from ..constants import PHASE0
class Phase0SpecBuilder(BaseSpecBuilder):
fork: str = PHASE0
@classmethod
def imports(cls, preset_name: str) -> str:
return '''from lru import LRU
from dataclasses import (
dataclass,
field,
)
from typing import (
Any, Callable, Dict, Set, Sequence, Tuple, Optional, TypeVar, NamedTuple, Final
)
from eth2spec.utils.ssz.ssz_impl import hash_tree_root, copy, uint_to_bytes
from eth2spec.utils.ssz.ssz_typing import (
View, boolean, Container, List, Vector, uint8, uint32, uint64, uint256,
Bytes1, Bytes4, Bytes32, Bytes48, Bytes96, Bitlist)
from eth2spec.utils.ssz.ssz_typing import Bitvector # noqa: F401
from eth2spec.utils import bls
from eth2spec.utils.hash_function import hash
'''
@classmethod
def preparations(cls) -> str:
return '''
SSZObject = TypeVar('SSZObject', bound=View)
'''
@classmethod
def sundry_functions(cls) -> str:
return '''
def get_eth1_data(block: Eth1Block) -> Eth1Data:
"""
A stub function return mocking Eth1Data.
"""
return Eth1Data(
deposit_root=block.deposit_root,
deposit_count=block.deposit_count,
block_hash=hash_tree_root(block))
def cache_this(key_fn, value_fn, lru_size): # type: ignore
cache_dict = LRU(size=lru_size)
def wrapper(*args, **kw): # type: ignore
key = key_fn(*args, **kw)
nonlocal cache_dict
if key not in cache_dict:
cache_dict[key] = value_fn(*args, **kw)
return cache_dict[key]
return wrapper
_compute_shuffled_index = compute_shuffled_index
compute_shuffled_index = cache_this(
lambda index, index_count, seed: (index, index_count, seed),
_compute_shuffled_index, lru_size=SLOTS_PER_EPOCH * 3)
_get_total_active_balance = get_total_active_balance
get_total_active_balance = cache_this(
lambda state: (state.validators.hash_tree_root(), compute_epoch_at_slot(state.slot)),
_get_total_active_balance, lru_size=10)
_get_base_reward = get_base_reward
get_base_reward = cache_this(
lambda state, index: (state.validators.hash_tree_root(), state.slot, index),
_get_base_reward, lru_size=2048)
_get_committee_count_per_slot = get_committee_count_per_slot
get_committee_count_per_slot = cache_this(
lambda state, epoch: (state.validators.hash_tree_root(), epoch),
_get_committee_count_per_slot, lru_size=SLOTS_PER_EPOCH * 3)
_get_active_validator_indices = get_active_validator_indices
get_active_validator_indices = cache_this(
lambda state, epoch: (state.validators.hash_tree_root(), epoch),
_get_active_validator_indices, lru_size=3)
_get_beacon_committee = get_beacon_committee
get_beacon_committee = cache_this(
lambda state, slot, index: (state.validators.hash_tree_root(), state.randao_mixes.hash_tree_root(), slot, index),
_get_beacon_committee, lru_size=SLOTS_PER_EPOCH * MAX_COMMITTEES_PER_SLOT * 3)
_get_matching_target_attestations = get_matching_target_attestations
get_matching_target_attestations = cache_this(
lambda state, epoch: (state.hash_tree_root(), epoch),
_get_matching_target_attestations, lru_size=10)
_get_matching_head_attestations = get_matching_head_attestations
get_matching_head_attestations = cache_this(
lambda state, epoch: (state.hash_tree_root(), epoch),
_get_matching_head_attestations, lru_size=10)
_get_attesting_indices = get_attesting_indices
get_attesting_indices = cache_this(
lambda state, data, bits: (
state.randao_mixes.hash_tree_root(),
state.validators.hash_tree_root(), data.hash_tree_root(), bits.hash_tree_root()
),
_get_attesting_indices, lru_size=SLOTS_PER_EPOCH * MAX_COMMITTEES_PER_SLOT * 3)'''

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@ -0,0 +1,20 @@
from .base import BaseSpecBuilder
from ..constants import WHISK
class WhiskSpecBuilder(BaseSpecBuilder):
fork: str = WHISK
@classmethod
def imports(cls, preset_name: str):
return f'''
from eth2spec.capella import {preset_name} as capella
'''
@classmethod
def hardcoded_custom_type_dep_constants(cls, spec_object) -> str:
# Necessary for custom types `WhiskShuffleProof` and `WhiskTrackerProof`
return {
'WHISK_MAX_SHUFFLE_PROOF_SIZE': spec_object.preset_vars['WHISK_MAX_SHUFFLE_PROOF_SIZE'].value,
'WHISK_MAX_OPENING_PROOF_SIZE': spec_object.preset_vars['WHISK_MAX_OPENING_PROOF_SIZE'].value,
}

32
pysetup/typing.py Normal file
View File

@ -0,0 +1,32 @@
from pathlib import Path
from typing import Dict, NamedTuple, Optional, List
class ProtocolDefinition(NamedTuple):
# just function definitions currently. May expand with configuration vars in future.
functions: Dict[str, str]
class VariableDefinition(NamedTuple):
type_name: Optional[str]
value: str
comment: Optional[str] # e.g. "noqa: E501"
type_hint: Optional[str] # e.g., "Final"
class SpecObject(NamedTuple):
functions: Dict[str, str]
protocols: Dict[str, ProtocolDefinition]
custom_types: Dict[str, str]
constant_vars: Dict[str, VariableDefinition]
preset_vars: Dict[str, VariableDefinition]
config_vars: Dict[str, VariableDefinition]
ssz_dep_constants: Dict[str, str] # the constants that depend on ssz_objects
ssz_objects: Dict[str, str]
dataclasses: Dict[str, str]
class BuildTarget(NamedTuple):
name: str
preset_paths: List[Path]
config_path: Path

828
setup.py
View File

@ -4,11 +4,8 @@ from distutils import dir_util
from distutils.util import convert_path
from pathlib import Path
import os
import re
import string
import textwrap
from typing import Dict, NamedTuple, List, Sequence, Optional, TypeVar, Tuple
from abc import ABC, abstractmethod
from typing import Dict, List, Sequence, Optional, Tuple
import ast
import subprocess
import sys
@ -17,6 +14,27 @@ from collections import OrderedDict
import json
from functools import reduce
from pysetup.constants import (
# code names
PHASE0,
# misc
ETH2_SPEC_COMMENT_PREFIX,
)
from pysetup.spec_builders import spec_builders
from pysetup.typing import (
BuildTarget,
ProtocolDefinition,
SpecObject,
VariableDefinition,
)
from pysetup.helpers import (
combine_spec_objects,
dependency_order_class_objects,
objects_to_spec,
parse_config_vars,
)
from pysetup.md_doc_paths import get_md_doc_paths
# NOTE: have to programmatically include third-party dependencies in `setup.py`.
def installPackage(package: str):
@ -42,112 +60,6 @@ from marko.ext.gfm import gfm
from marko.ext.gfm.elements import Table
# Definitions in context.py
PHASE0 = 'phase0'
ALTAIR = 'altair'
BELLATRIX = 'bellatrix'
CAPELLA = 'capella'
DENEB = 'deneb'
EIP6110 = 'eip6110'
WHISK = 'whisk'
PREVIOUS_FORK_OF = {
PHASE0: None,
ALTAIR: PHASE0,
BELLATRIX: ALTAIR,
CAPELLA: BELLATRIX,
DENEB: CAPELLA,
EIP6110: DENEB,
WHISK: CAPELLA,
}
ALL_FORKS = list(PREVIOUS_FORK_OF.keys())
IGNORE_SPEC_FILES = [
"specs/phase0/deposit-contract.md"
]
EXTRA_SPEC_FILES = {
BELLATRIX: "sync/optimistic.md"
}
# The helper functions that are used when defining constants
CONSTANT_DEP_SUNDRY_CONSTANTS_FUNCTIONS = '''
def ceillog2(x: int) -> uint64:
if x < 1:
raise ValueError(f"ceillog2 accepts only positive values, x={x}")
return uint64((x - 1).bit_length())
def floorlog2(x: int) -> uint64:
if x < 1:
raise ValueError(f"floorlog2 accepts only positive values, x={x}")
return uint64(x.bit_length() - 1)
'''
OPTIMIZED_BLS_AGGREGATE_PUBKEYS = '''
def eth_aggregate_pubkeys(pubkeys: Sequence[BLSPubkey]) -> BLSPubkey:
return bls.AggregatePKs(pubkeys)
'''
class ProtocolDefinition(NamedTuple):
# just function definitions currently. May expand with configuration vars in future.
functions: Dict[str, str]
class VariableDefinition(NamedTuple):
type_name: Optional[str]
value: str
comment: Optional[str] # e.g. "noqa: E501"
type_hint: Optional[str] # e.g., "Final"
class SpecObject(NamedTuple):
functions: Dict[str, str]
protocols: Dict[str, ProtocolDefinition]
custom_types: Dict[str, str]
constant_vars: Dict[str, VariableDefinition]
preset_vars: Dict[str, VariableDefinition]
config_vars: Dict[str, VariableDefinition]
ssz_dep_constants: Dict[str, str] # the constants that depend on ssz_objects
ssz_objects: Dict[str, str]
dataclasses: Dict[str, str]
def is_post_fork(a, b) -> bool:
"""
Returns true if fork a is after b, or if a == b
"""
if a == b:
return True
prev_fork = PREVIOUS_FORK_OF[a]
if prev_fork == b:
return True
elif prev_fork == None:
return False
else:
return is_post_fork(prev_fork, b)
def collect_prev_forks(fork: str) -> List[str]:
forks = [fork]
while True:
fork = PREVIOUS_FORK_OF[fork]
if fork is None:
return forks
forks.append(fork)
def get_fork_directory(fork):
dir1 = f'specs/{fork}'
if os.path.exists(dir1):
return dir1
dir2 = f'specs/_features/{fork}'
if os.path.exists(dir2):
return dir2
raise FileNotFoundError(f"No directory found for fork: {fork}")
def _get_name_from_heading(heading: Heading) -> Optional[str]:
last_child = heading.children[-1]
if isinstance(last_child, CodeSpan):
@ -212,13 +124,12 @@ def _load_kzg_trusted_setups(preset_name):
return trusted_setup_G1, trusted_setup_G2, trusted_setup_G1_lagrange, roots_of_unity
ALL_KZG_SETUPS = {
'minimal': _load_kzg_trusted_setups('minimal'),
'mainnet': _load_kzg_trusted_setups('mainnet')
}
ETH2_SPEC_COMMENT_PREFIX = "eth2spec:"
def _get_eth2_spec_comment(child: LinkRefDef) -> Optional[str]:
_, _, title = child._parse_info
@ -230,7 +141,7 @@ def _get_eth2_spec_comment(child: LinkRefDef) -> Optional[str]:
return title[len(ETH2_SPEC_COMMENT_PREFIX):].strip()
def _parse_value(name: str, typed_value: str, type_hint: Optional[str]=None) -> VariableDefinition:
def _parse_value(name: str, typed_value: str, type_hint: Optional[str] = None) -> VariableDefinition:
comment = None
if name == "BLS12_381_Q":
comment = "noqa: E501"
@ -359,659 +270,6 @@ def get_spec(file_name: Path, preset: Dict[str, str], config: Dict[str, str], pr
)
class SpecBuilder(ABC):
@property
@abstractmethod
def fork(self) -> str:
raise NotImplementedError()
@classmethod
def imports(cls, preset_name: str) -> str:
"""
Import objects from other libraries.
"""
return ""
@classmethod
def preparations(cls) -> str:
"""
Define special types/constants for building pyspec or call functions.
"""
return ""
@classmethod
def sundry_functions(cls) -> str:
"""
The functions that are (1) defined abstractly in specs or (2) adjusted for getting better performance.
"""
return ""
@classmethod
def execution_engine_cls(cls) -> str:
return ""
@classmethod
def hardcoded_ssz_dep_constants(cls) -> Dict[str, str]:
"""
The constants that are required for SSZ objects.
"""
return {}
@classmethod
def hardcoded_custom_type_dep_constants(cls, spec_object) -> Dict[str, str]: # TODO
"""
The constants that are required for custom types.
"""
return {}
@classmethod
def implement_optimizations(cls, functions: Dict[str, str]) -> Dict[str, str]:
return functions
@classmethod
def build_spec(cls, preset_name: str,
source_files: Sequence[Path], preset_files: Sequence[Path], config_file: Path) -> str:
return _build_spec(preset_name, cls.fork, source_files, preset_files, config_file)
#
# Phase0SpecBuilder
#
class Phase0SpecBuilder(SpecBuilder):
fork: str = PHASE0
@classmethod
def imports(cls, preset_name: str) -> str:
return '''from lru import LRU
from dataclasses import (
dataclass,
field,
)
from typing import (
Any, Callable, Dict, Set, Sequence, Tuple, Optional, TypeVar, NamedTuple, Final
)
from eth2spec.utils.ssz.ssz_impl import hash_tree_root, copy, uint_to_bytes
from eth2spec.utils.ssz.ssz_typing import (
View, boolean, Container, List, Vector, uint8, uint32, uint64, uint256,
Bytes1, Bytes4, Bytes32, Bytes48, Bytes96, Bitlist)
from eth2spec.utils.ssz.ssz_typing import Bitvector # noqa: F401
from eth2spec.utils import bls
from eth2spec.utils.hash_function import hash
'''
@classmethod
def preparations(cls) -> str:
return '''
SSZObject = TypeVar('SSZObject', bound=View)
'''
@classmethod
def sundry_functions(cls) -> str:
return '''
def get_eth1_data(block: Eth1Block) -> Eth1Data:
"""
A stub function return mocking Eth1Data.
"""
return Eth1Data(
deposit_root=block.deposit_root,
deposit_count=block.deposit_count,
block_hash=hash_tree_root(block))
def cache_this(key_fn, value_fn, lru_size): # type: ignore
cache_dict = LRU(size=lru_size)
def wrapper(*args, **kw): # type: ignore
key = key_fn(*args, **kw)
nonlocal cache_dict
if key not in cache_dict:
cache_dict[key] = value_fn(*args, **kw)
return cache_dict[key]
return wrapper
_compute_shuffled_index = compute_shuffled_index
compute_shuffled_index = cache_this(
lambda index, index_count, seed: (index, index_count, seed),
_compute_shuffled_index, lru_size=SLOTS_PER_EPOCH * 3)
_get_total_active_balance = get_total_active_balance
get_total_active_balance = cache_this(
lambda state: (state.validators.hash_tree_root(), compute_epoch_at_slot(state.slot)),
_get_total_active_balance, lru_size=10)
_get_base_reward = get_base_reward
get_base_reward = cache_this(
lambda state, index: (state.validators.hash_tree_root(), state.slot, index),
_get_base_reward, lru_size=2048)
_get_committee_count_per_slot = get_committee_count_per_slot
get_committee_count_per_slot = cache_this(
lambda state, epoch: (state.validators.hash_tree_root(), epoch),
_get_committee_count_per_slot, lru_size=SLOTS_PER_EPOCH * 3)
_get_active_validator_indices = get_active_validator_indices
get_active_validator_indices = cache_this(
lambda state, epoch: (state.validators.hash_tree_root(), epoch),
_get_active_validator_indices, lru_size=3)
_get_beacon_committee = get_beacon_committee
get_beacon_committee = cache_this(
lambda state, slot, index: (state.validators.hash_tree_root(), state.randao_mixes.hash_tree_root(), slot, index),
_get_beacon_committee, lru_size=SLOTS_PER_EPOCH * MAX_COMMITTEES_PER_SLOT * 3)
_get_matching_target_attestations = get_matching_target_attestations
get_matching_target_attestations = cache_this(
lambda state, epoch: (state.hash_tree_root(), epoch),
_get_matching_target_attestations, lru_size=10)
_get_matching_head_attestations = get_matching_head_attestations
get_matching_head_attestations = cache_this(
lambda state, epoch: (state.hash_tree_root(), epoch),
_get_matching_head_attestations, lru_size=10)
_get_attesting_indices = get_attesting_indices
get_attesting_indices = cache_this(
lambda state, data, bits: (
state.randao_mixes.hash_tree_root(),
state.validators.hash_tree_root(), data.hash_tree_root(), bits.hash_tree_root()
),
_get_attesting_indices, lru_size=SLOTS_PER_EPOCH * MAX_COMMITTEES_PER_SLOT * 3)'''
#
# AltairSpecBuilder
#
class AltairSpecBuilder(SpecBuilder):
fork: str = ALTAIR
@classmethod
def imports(cls, preset_name: str) -> str:
return f'''
from typing import NewType, Union as PyUnion
from eth2spec.phase0 import {preset_name} as phase0
from eth2spec.test.helpers.merkle import build_proof
from eth2spec.utils.ssz.ssz_typing import Path
'''
@classmethod
def preparations(cls):
return '''
SSZVariableName = str
GeneralizedIndex = NewType('GeneralizedIndex', int)
'''
@classmethod
def sundry_functions(cls) -> str:
return '''
def get_generalized_index(ssz_class: Any, *path: Sequence[PyUnion[int, SSZVariableName]]) -> GeneralizedIndex:
ssz_path = Path(ssz_class)
for item in path:
ssz_path = ssz_path / item
return GeneralizedIndex(ssz_path.gindex())
def compute_merkle_proof_for_state(state: BeaconState,
index: GeneralizedIndex) -> Sequence[Bytes32]:
return build_proof(state.get_backing(), index)'''
@classmethod
def hardcoded_ssz_dep_constants(cls) -> Dict[str, str]:
return {
'FINALIZED_ROOT_INDEX': 'GeneralizedIndex(105)',
'CURRENT_SYNC_COMMITTEE_INDEX': 'GeneralizedIndex(54)',
'NEXT_SYNC_COMMITTEE_INDEX': 'GeneralizedIndex(55)',
}
@classmethod
def implement_optimizations(cls, functions: Dict[str, str]) -> Dict[str, str]:
if "eth_aggregate_pubkeys" in functions:
functions["eth_aggregate_pubkeys"] = OPTIMIZED_BLS_AGGREGATE_PUBKEYS.strip()
return functions
#
# BellatrixSpecBuilder
#
class BellatrixSpecBuilder(SpecBuilder):
fork: str = BELLATRIX
@classmethod
def imports(cls, preset_name: str):
return f'''
from typing import Protocol
from eth2spec.altair import {preset_name} as altair
from eth2spec.utils.ssz.ssz_typing import Bytes8, Bytes20, ByteList, ByteVector
'''
@classmethod
def sundry_functions(cls) -> str:
return """
ExecutionState = Any
def get_pow_block(hash: Bytes32) -> Optional[PowBlock]:
return PowBlock(block_hash=hash, parent_hash=Bytes32(), total_difficulty=uint256(0))
def get_execution_state(_execution_state_root: Bytes32) -> ExecutionState:
pass
def get_pow_chain_head() -> PowBlock:
pass"""
@classmethod
def execution_engine_cls(cls) -> str:
return """
class NoopExecutionEngine(ExecutionEngine):
def notify_new_payload(self: ExecutionEngine, execution_payload: ExecutionPayload) -> bool:
return True
def notify_forkchoice_updated(self: ExecutionEngine,
head_block_hash: Hash32,
safe_block_hash: Hash32,
finalized_block_hash: Hash32,
payload_attributes: Optional[PayloadAttributes]) -> Optional[PayloadId]:
pass
def get_payload(self: ExecutionEngine, payload_id: PayloadId) -> GetPayloadResponse:
# pylint: disable=unused-argument
raise NotImplementedError("no default block production")
def is_valid_block_hash(self: ExecutionEngine, execution_payload: ExecutionPayload) -> bool:
return True
def verify_and_notify_new_payload(self: ExecutionEngine,
new_payload_request: NewPayloadRequest) -> bool:
return True
EXECUTION_ENGINE = NoopExecutionEngine()"""
@classmethod
def hardcoded_custom_type_dep_constants(cls, spec_object) -> str:
return {
'MAX_BYTES_PER_TRANSACTION': spec_object.preset_vars['MAX_BYTES_PER_TRANSACTION'].value,
}
#
# CapellaSpecBuilder
#
class CapellaSpecBuilder(SpecBuilder):
fork: str = CAPELLA
@classmethod
def imports(cls, preset_name: str):
return f'''
from eth2spec.bellatrix import {preset_name} as bellatrix
'''
@classmethod
def sundry_functions(cls) -> str:
return '''
def compute_merkle_proof_for_block_body(body: BeaconBlockBody,
index: GeneralizedIndex) -> Sequence[Bytes32]:
return build_proof(body.get_backing(), index)'''
@classmethod
def hardcoded_ssz_dep_constants(cls) -> Dict[str, str]:
return {
'EXECUTION_PAYLOAD_INDEX': 'GeneralizedIndex(25)',
}
#
# DenebSpecBuilder
#
class DenebSpecBuilder(SpecBuilder):
fork: str = DENEB
@classmethod
def imports(cls, preset_name: str):
return f'''
from eth2spec.capella import {preset_name} as capella
'''
@classmethod
def preparations(cls):
return '''
T = TypeVar('T') # For generic function
'''
@classmethod
def sundry_functions(cls) -> str:
return '''
def retrieve_blobs_and_proofs(beacon_block_root: Root) -> PyUnion[Tuple[Blob, KZGProof], Tuple[str, str]]:
# pylint: disable=unused-argument
return ("TEST", "TEST")'''
@classmethod
def execution_engine_cls(cls) -> str:
return """
class NoopExecutionEngine(ExecutionEngine):
def notify_new_payload(self: ExecutionEngine,
execution_payload: ExecutionPayload,
parent_beacon_block_root: Root) -> bool:
return True
def notify_forkchoice_updated(self: ExecutionEngine,
head_block_hash: Hash32,
safe_block_hash: Hash32,
finalized_block_hash: Hash32,
payload_attributes: Optional[PayloadAttributes]) -> Optional[PayloadId]:
pass
def get_payload(self: ExecutionEngine, payload_id: PayloadId) -> GetPayloadResponse:
# pylint: disable=unused-argument
raise NotImplementedError("no default block production")
def is_valid_block_hash(self: ExecutionEngine,
execution_payload: ExecutionPayload,
parent_beacon_block_root: Root) -> bool:
return True
def is_valid_versioned_hashes(self: ExecutionEngine, new_payload_request: NewPayloadRequest) -> bool:
return True
def verify_and_notify_new_payload(self: ExecutionEngine,
new_payload_request: NewPayloadRequest) -> bool:
return True
EXECUTION_ENGINE = NoopExecutionEngine()"""
@classmethod
def hardcoded_custom_type_dep_constants(cls, spec_object) -> str:
return {
'BYTES_PER_FIELD_ELEMENT': spec_object.constant_vars['BYTES_PER_FIELD_ELEMENT'].value,
'FIELD_ELEMENTS_PER_BLOB': spec_object.preset_vars['FIELD_ELEMENTS_PER_BLOB'].value,
'MAX_BLOBS_PER_BLOCK': spec_object.preset_vars['MAX_BLOBS_PER_BLOCK'].value,
}
#
# EIP6110SpecBuilder
#
class EIP6110SpecBuilder(SpecBuilder):
fork: str = EIP6110
@classmethod
def imports(cls, preset_name: str):
return f'''
from eth2spec.deneb import {preset_name} as deneb
'''
#
# WhiskSpecBuilder
#
class WhiskSpecBuilder(SpecBuilder):
fork: str = WHISK
@classmethod
def imports(cls, preset_name: str):
return f'''
from eth2spec.capella import {preset_name} as capella
'''
@classmethod
def hardcoded_custom_type_dep_constants(cls, spec_object) -> str:
# Necessary for custom types `WhiskShuffleProof` and `WhiskTrackerProof`
return {
'WHISK_MAX_SHUFFLE_PROOF_SIZE': spec_object.preset_vars['WHISK_MAX_SHUFFLE_PROOF_SIZE'].value,
'WHISK_MAX_OPENING_PROOF_SIZE': spec_object.preset_vars['WHISK_MAX_OPENING_PROOF_SIZE'].value,
}
spec_builders = {
builder.fork: builder
for builder in (
Phase0SpecBuilder, AltairSpecBuilder, BellatrixSpecBuilder, CapellaSpecBuilder, DenebSpecBuilder,
EIP6110SpecBuilder, WhiskSpecBuilder,
)
}
def is_byte_vector(value: str) -> bool:
return value.startswith(('ByteVector'))
def make_function_abstract(protocol_def: ProtocolDefinition, key: str):
function = protocol_def.functions[key].split('"""')
protocol_def.functions[key] = function[0] + "..."
def objects_to_spec(preset_name: str,
spec_object: SpecObject,
fork: str,
ordered_class_objects: 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" if not is_byte_vector(value) else f"class {key}({value}): # type: ignore\n pass\n"
for key, value in spec_object.custom_types.items()
]
)
)
# Collect builders with the reversed previous forks
# e.g. `[bellatrix, altair, phase0]` -> `[phase0, altair, bellatrix]`
builders = [spec_builders[fork] for fork in collect_prev_forks(fork)[::-1]]
def format_protocol(protocol_name: str, protocol_def: ProtocolDefinition) -> str:
abstract_functions = ["verify_and_notify_new_payload"]
for key in protocol_def.functions.keys():
if key in abstract_functions:
make_function_abstract(protocol_def, key)
protocol = f"class {protocol_name}(Protocol):"
for fn_source in protocol_def.functions.values():
fn_source = fn_source.replace("self: "+protocol_name, "self")
protocol += "\n\n" + textwrap.indent(fn_source, " ")
return protocol
protocols_spec = '\n\n\n'.join(format_protocol(k, v) for k, v in spec_object.protocols.items())
for k in list(spec_object.functions):
if k in [
"ceillog2",
"floorlog2",
"compute_merkle_proof_for_block_body",
"compute_merkle_proof_for_state",
]:
del spec_object.functions[k]
functions = reduce(lambda fns, builder: builder.implement_optimizations(fns), builders, spec_object.functions)
functions_spec = '\n\n\n'.join(functions.values())
# Access global dict of config vars for runtime configurables
for name in spec_object.config_vars.keys():
functions_spec = re.sub(r"\b%s\b" % name, 'config.' + name, functions_spec)
def format_config_var(name: str, vardef: VariableDefinition) -> str:
if vardef.type_name is None:
out = f'{name}={vardef.value},'
else:
out = f'{name}={vardef.type_name}({vardef.value}),'
if vardef.comment is not None:
out += f' # {vardef.comment}'
return out
config_spec = 'class Configuration(NamedTuple):\n'
config_spec += ' PRESET_BASE: str\n'
config_spec += '\n'.join(f' {k}: {v.type_name if v.type_name is not None else "int"}'
for k, v in spec_object.config_vars.items())
config_spec += '\n\n\nconfig = Configuration(\n'
config_spec += f' PRESET_BASE="{preset_name}",\n'
config_spec += '\n'.join(' ' + format_config_var(k, v) for k, v in spec_object.config_vars.items())
config_spec += '\n)\n'
def format_constant(name: str, vardef: VariableDefinition) -> str:
if vardef.type_name is None:
if vardef.type_hint is None:
out = f'{name} = {vardef.value}'
else:
out = f'{name}: {vardef.type_hint} = {vardef.value}'
else:
out = f'{name} = {vardef.type_name}({vardef.value})'
if vardef.comment is not None:
out += f' # {vardef.comment}'
return out
# Merge all constant objects
hardcoded_ssz_dep_constants = reduce(lambda obj, builder: {**obj, **builder.hardcoded_ssz_dep_constants()}, builders, {})
hardcoded_custom_type_dep_constants = reduce(lambda obj, builder: {**obj, **builder.hardcoded_custom_type_dep_constants(spec_object)}, builders, {})
# Concatenate all strings
imports = reduce(lambda txt, builder: (txt + "\n\n" + builder.imports(preset_name) ).strip("\n"), builders, "")
preparations = reduce(lambda txt, builder: (txt + "\n\n" + builder.preparations() ).strip("\n"), builders, "")
sundry_functions = reduce(lambda txt, builder: (txt + "\n\n" + builder.sundry_functions() ).strip("\n"), builders, "")
# Keep engine from the most recent fork
execution_engine_cls = reduce(lambda txt, builder: builder.execution_engine_cls() or txt, builders, "")
constant_vars_spec = '# Constant vars\n' + '\n'.join(format_constant(k, v) for k, v in spec_object.constant_vars.items())
preset_vars_spec = '# Preset vars\n' + '\n'.join(format_constant(k, v) for k, v in spec_object.preset_vars.items())
ordered_class_objects_spec = '\n\n\n'.join(ordered_class_objects.values())
ssz_dep_constants = '\n'.join(map(lambda x: '%s = %s' % (x, hardcoded_ssz_dep_constants[x]), hardcoded_ssz_dep_constants))
ssz_dep_constants_verification = '\n'.join(map(lambda x: 'assert %s == %s' % (x, spec_object.ssz_dep_constants[x]), hardcoded_ssz_dep_constants))
custom_type_dep_constants = '\n'.join(map(lambda x: '%s = %s' % (x, hardcoded_custom_type_dep_constants[x]), hardcoded_custom_type_dep_constants))
spec_strs = [
imports,
preparations,
f"fork = \'{fork}\'\n",
# The constants that some SSZ containers require. Need to be defined before `new_type_definitions`
custom_type_dep_constants,
new_type_definitions,
CONSTANT_DEP_SUNDRY_CONSTANTS_FUNCTIONS,
# The constants that some SSZ containers require. Need to be defined before `constants_spec`
ssz_dep_constants,
constant_vars_spec,
preset_vars_spec,
config_spec,
ordered_class_objects_spec,
protocols_spec,
functions_spec,
sundry_functions,
execution_engine_cls,
# Since some constants are hardcoded in setup.py, the following assertions verify that the hardcoded constants are
# as same as the spec definition.
ssz_dep_constants_verification,
]
return "\n\n\n".join([str.strip("\n") for str in spec_strs if str]) + "\n"
def combine_protocols(old_protocols: Dict[str, ProtocolDefinition],
new_protocols: Dict[str, ProtocolDefinition]) -> Dict[str, ProtocolDefinition]:
for key, value in new_protocols.items():
if key not in old_protocols:
old_protocols[key] = value
else:
functions = combine_dicts(old_protocols[key].functions, value.functions)
old_protocols[key] = ProtocolDefinition(functions=functions)
return old_protocols
T = TypeVar('T')
def combine_dicts(old_dict: Dict[str, T], new_dict: Dict[str, T]) -> Dict[str, T]:
return {**old_dict, **new_dict}
ignored_dependencies = [
'bit', 'boolean', 'Vector', 'List', 'Container', 'BLSPubkey', 'BLSSignature',
'Bytes1', 'Bytes4', 'Bytes8', 'Bytes20', 'Bytes32', 'Bytes48', 'Bytes96', 'Bitlist', 'Bitvector',
'uint8', 'uint16', 'uint32', 'uint64', 'uint128', 'uint256',
'bytes', 'byte', 'ByteList', 'ByteVector',
'Dict', 'dict', 'field', 'ceillog2', 'floorlog2', 'Set',
'Optional', 'Sequence',
]
def dependency_order_class_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():
old_objects[key] = value
return old_objects
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.
"""
protocols = combine_protocols(spec0.protocols, spec1.protocols)
functions = combine_dicts(spec0.functions, spec1.functions)
custom_types = combine_dicts(spec0.custom_types, spec1.custom_types)
constant_vars = combine_dicts(spec0.constant_vars, spec1.constant_vars)
preset_vars = combine_dicts(spec0.preset_vars, spec1.preset_vars)
config_vars = combine_dicts(spec0.config_vars, spec1.config_vars)
ssz_dep_constants = combine_dicts(spec0.ssz_dep_constants, spec1.ssz_dep_constants)
ssz_objects = combine_ssz_objects(spec0.ssz_objects, spec1.ssz_objects, custom_types)
dataclasses = combine_dicts(spec0.dataclasses, spec1.dataclasses)
return SpecObject(
functions=functions,
protocols=protocols,
custom_types=custom_types,
constant_vars=constant_vars,
preset_vars=preset_vars,
config_vars=config_vars,
ssz_dep_constants=ssz_dep_constants,
ssz_objects=ssz_objects,
dataclasses=dataclasses,
)
def parse_config_vars(conf: Dict[str, str]) -> Dict[str, str]:
"""
Parses a dict of basic str/int/list types into a dict for insertion into the spec code.
"""
out: Dict[str, str] = dict()
for k, v in conf.items():
if isinstance(v, str) and (v.startswith("0x") or k == 'PRESET_BASE' or k == 'CONFIG_NAME'):
# Represent byte data with string, to avoid misinterpretation as big-endian int.
# Everything except PRESET_BASE and CONFIG_NAME is either byte data or an integer.
out[k] = f"'{v}'"
else:
out[k] = str(int(v))
return out
def load_preset(preset_files: Sequence[Path]) -> Dict[str, str]:
"""
Loads the a directory of preset files, merges the result into one preset.
@ -1039,8 +297,11 @@ def load_config(config_path: Path) -> Dict[str, str]:
return parse_config_vars(config_data)
def _build_spec(preset_name: str, fork: str,
source_files: Sequence[Path], preset_files: Sequence[Path], config_file: Path) -> str:
def build_spec(fork: str,
preset_name: str,
source_files: Sequence[Path],
preset_files: Sequence[Path],
config_file: Path) -> str:
preset = load_preset(preset_files)
config = load_config(config_file)
all_specs = [get_spec(spec, preset, config, preset_name) for spec in source_files]
@ -1060,12 +321,6 @@ def _build_spec(preset_name: str, fork: str,
return objects_to_spec(preset_name, spec_object, fork, class_objects)
class BuildTarget(NamedTuple):
name: str
preset_paths: List[Path]
config_path: Path
class PySpecCommand(Command):
"""Convert spec markdown files to a spec python file"""
@ -1102,20 +357,7 @@ class PySpecCommand(Command):
if len(self.md_doc_paths) == 0:
print("no paths were specified, using default markdown file paths for pyspec"
" build (spec fork: %s)" % self.spec_fork)
self.md_doc_paths = ""
for fork in ALL_FORKS:
if is_post_fork(self.spec_fork, fork):
# Append all files in fork directory recursively
for root, dirs, files in os.walk(get_fork_directory(fork)):
for filename in files:
filepath = os.path.join(root, filename)
if filepath.endswith('.md') and filepath not in IGNORE_SPEC_FILES:
self.md_doc_paths += filepath + "\n"
# Append extra files if any
if fork in EXTRA_SPEC_FILES:
self.md_doc_paths += EXTRA_SPEC_FILES[fork] + "\n"
self.md_doc_paths = get_md_doc_paths(self.spec_fork)
if len(self.md_doc_paths) == 0:
raise Exception('no markdown files specified, and spec fork "%s" is unknown', self.spec_fork)
@ -1148,8 +390,13 @@ class PySpecCommand(Command):
dir_util.mkpath(self.out_dir)
for (name, preset_paths, config_path) in self.parsed_build_targets:
spec_str = spec_builders[self.spec_fork].build_spec(
name, self.parsed_md_doc_paths, preset_paths, config_path)
spec_str = build_spec(
spec_builders[self.spec_fork].fork,
name,
self.parsed_md_doc_paths,
preset_paths,
config_path,
)
if self.dry_run:
self.announce('dry run successfully prepared contents for spec.'
f' out dir: "{self.out_dir}", spec fork: "{self.spec_fork}", build target: "{name}"')
@ -1210,6 +457,7 @@ class PyspecDevCommand(Command):
for spec_fork in spec_builders:
self.run_pyspec_cmd(spec_fork=spec_fork)
commands = {
'pyspec': PySpecCommand,
'build_py': BuildPyCommand,