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chore: prep for 3.13 by removing msgspec dep (#73)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,192 +1,186 @@ | ||
| from __future__ import annotations | ||
|
|
||
| from collections.abc import Iterator | ||
| from typing import Any | ||
|
|
||
| from eth.vm.memory import Memory | ||
| from eth.vm.stack import Stack | ||
| from eth_pydantic_types import Address, HexBytes | ||
| from eth_utils import to_int | ||
| from msgspec import Struct | ||
| from msgspec.json import Decoder | ||
|
|
||
| # opcodes grouped by the number of items they pop from the stack | ||
| # fmt: off | ||
| POP_OPCODES = { | ||
| 1: ["EXTCODEHASH", "ISZERO", "NOT", "BALANCE", "CALLDATALOAD", "EXTCODESIZE", "BLOCKHASH", "POP", "MLOAD", "SLOAD", "JUMP", "SELFDESTRUCT"], # noqa: E501 | ||
| 2: ["SHL", "SHR", "SAR", "REVERT", "ADD", "MUL", "SUB", "DIV", "SDIV", "MOD", "SMOD", "EXP", "SIGNEXTEND", "LT", "GT", "SLT", "SGT", "EQ", "AND", "XOR", "OR", "BYTE", "SHA3", "KECCAK256", "MSTORE", "MSTORE8", "SSTORE", "JUMPI", "RETURN"], # noqa: E501 | ||
| 3: ["RETURNDATACOPY", "ADDMOD", "MULMOD", "CALLDATACOPY", "CODECOPY", "CREATE"], | ||
| 4: ["CREATE2", "EXTCODECOPY"], | ||
| 6: ["STATICCALL", "DELEGATECALL"], | ||
| 7: ["CALL", "CALLCODE"] | ||
| } | ||
| # fmt: on | ||
| POPCODES = {op: n for n, opcodes in POP_OPCODES.items() for op in opcodes} | ||
| POPCODES.update({f"LOG{n}": n + 2 for n in range(0, 5)}) | ||
| POPCODES.update({f"SWAP{i}": i + 1 for i in range(1, 17)}) | ||
| POPCODES.update({f"DUP{i}": i for i in range(1, 17)}) | ||
|
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||
|
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||
| class uint256(int): | ||
| pass | ||
|
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||
|
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| class VMTrace(Struct): | ||
| code: HexBytes | ||
| """The code to be executed.""" | ||
| ops: list[VMOperation] | ||
| """The operations executed.""" | ||
|
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||
|
|
||
| class VMOperation(Struct): | ||
| pc: int | ||
| """The program counter.""" | ||
| cost: int | ||
| """The gas cost for this instruction.""" | ||
| ex: VMExecutedOperation | None | ||
| """Information concerning the execution of the operation.""" | ||
| sub: VMTrace | None | ||
| """Subordinate trace of the CALL/CREATE if applicable.""" | ||
| op: str | ||
| """Opcode that is being called.""" | ||
| idx: str | ||
| """Index in the tree.""" | ||
|
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||
|
|
||
| class VMExecutedOperation(Struct): | ||
| used: int | ||
| """The amount of remaining gas.""" | ||
| push: list[HexBytes] | ||
| """The stack item placed, if any.""" | ||
| mem: MemoryDiff | None | ||
| """If altered, the memory delta.""" | ||
| store: StorageDiff | None | ||
| """The altered storage value, if any.""" | ||
|
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||
|
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||
| class MemoryDiff(Struct): | ||
| off: int | ||
| """Offset into memory the change begins.""" | ||
| data: HexBytes | ||
| """The changed data.""" | ||
|
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||
|
|
||
| class StorageDiff(Struct): | ||
| key: uint256 | ||
| """Which key in storage is changed.""" | ||
| val: uint256 | ||
| """What the value has been changed to.""" | ||
|
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||
|
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| class VMTraceFrame(Struct): | ||
| """ | ||
| A synthetic trace frame representing the state at a step of execution. | ||
| """ | ||
|
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||
| address: str | ||
| pc: int | ||
| op: str | ||
| depth: int | ||
| stack: list[int] | ||
| memory: bytes | memoryview | ||
| storage: dict[int, int] | ||
|
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||
|
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||
| def to_trace_frames( | ||
| trace: VMTrace, | ||
| depth: int = 1, | ||
| address: str = "", | ||
| copy_memory: bool = True, | ||
| ) -> Iterator[VMTraceFrame]: | ||
| """ | ||
| Replays a VMTrace and yields trace frames at each step of the execution. | ||
| Can be used as a much faster drop-in replacement for Geth-style traces. | ||
| Args: | ||
| trace (VMTrace): A decoded trace from a `trace_` rpc. | ||
| depth (int): A depth of the call being processed. automatically populated. | ||
| address (str): The address of the contract being executed. auto populated | ||
| except the root call. | ||
| copy_memory (bool): Whether to copy memory when returning trace frames. | ||
| Disable for a speedup when dealing with traces using a large amount of memory. | ||
| when disabled, `VMTraceFrame.memory` becomes `memoryview` instead of `bytes`, which | ||
| works like a pointer at the memory `bytearray`. this means you must process the | ||
| frames immediately, otherwise you risk memory value mutating further into execution. | ||
| Returns: | ||
| Iterator[VMTraceFrame]: An iterator of synthetic traces which can be used as a drop-in | ||
| replacement for Geth-style traces. also contains the address of the current contract | ||
| context. | ||
| """ | ||
| memory = Memory() | ||
| stack = Stack() | ||
| storage: dict[int, int] = {} | ||
| call_address = "" | ||
| read_memory = memory.read_bytes if copy_memory else memory.read | ||
|
|
||
| for op in trace.ops: | ||
| if op.ex and op.ex.mem: | ||
| memory.extend(op.ex.mem.off, len(op.ex.mem.data)) | ||
|
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||
| # geth convention is to return after memory expansion, but before the operation is applied | ||
| yield VMTraceFrame( | ||
| address=address, | ||
| pc=op.pc, | ||
| op=op.op, | ||
| depth=depth, | ||
| stack=[to_int(val) for val in stack.values], | ||
| memory=read_memory(0, len(memory)), | ||
| storage=storage.copy(), | ||
| ) | ||
|
|
||
| if op.op in ["CALL", "DELEGATECALL", "STATICCALL"]: | ||
| call_address = Address.__eth_pydantic_validate__(stack.values[-2]) | ||
|
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||
| if op.ex: | ||
| if op.ex.mem: | ||
| memory.write(op.ex.mem.off, len(op.ex.mem.data), op.ex.mem.data) | ||
|
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||
| num_pop = POPCODES.get(op.op) | ||
| if num_pop: | ||
| stack.pop_any(num_pop) | ||
|
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||
| for item in op.ex.push: | ||
| stack.push_bytes(item) | ||
|
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| # erigon bug: https://github.com/ledgerwatch/erigon/pull/7970 | ||
| if op.op == "PUSH0" and not op.ex.push: | ||
| stack.push_int(0) | ||
|
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||
| if op.ex.store: | ||
| storage[op.ex.store.key] = op.ex.store.val | ||
|
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||
| if op.sub: | ||
| yield from to_trace_frames( | ||
| op.sub, depth=depth + 1, address=call_address, copy_memory=copy_memory | ||
| import sys | ||
|
|
||
| # msgspec does not currently build on python 3.13 so hide it behind a version check | ||
| if sys.version_info < (3, 13): | ||
|
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| from collections.abc import Iterator | ||
| from typing import Any | ||
|
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||
| from eth.vm.memory import Memory | ||
| from eth.vm.stack import Stack | ||
| from eth_pydantic_types import Address, HexBytes | ||
| from eth_utils import to_int | ||
| from msgspec import Struct | ||
| from msgspec.json import Decoder | ||
|
|
||
| # opcodes grouped by the number of items they pop from the stack | ||
| # fmt: off | ||
| POP_OPCODES = { | ||
| 1: ["EXTCODEHASH", "ISZERO", "NOT", "BALANCE", "CALLDATALOAD", "EXTCODESIZE", "BLOCKHASH", "POP", "MLOAD", "SLOAD", "JUMP", "SELFDESTRUCT"], # noqa: E501 | ||
| 2: ["SHL", "SHR", "SAR", "REVERT", "ADD", "MUL", "SUB", "DIV", "SDIV", "MOD", "SMOD", "EXP", "SIGNEXTEND", "LT", "GT", "SLT", "SGT", "EQ", "AND", "XOR", "OR", "BYTE", "SHA3", "KECCAK256", "MSTORE", "MSTORE8", "SSTORE", "JUMPI", "RETURN"], # noqa: E501 | ||
| 3: ["RETURNDATACOPY", "ADDMOD", "MULMOD", "CALLDATACOPY", "CODECOPY", "CREATE"], | ||
| 4: ["CREATE2", "EXTCODECOPY"], | ||
| 6: ["STATICCALL", "DELEGATECALL"], | ||
| 7: ["CALL", "CALLCODE"] | ||
| } | ||
| # fmt: on | ||
| POPCODES = {op: n for n, opcodes in POP_OPCODES.items() for op in opcodes} | ||
| POPCODES.update({f"LOG{n}": n + 2 for n in range(0, 5)}) | ||
| POPCODES.update({f"SWAP{i}": i + 1 for i in range(1, 17)}) | ||
| POPCODES.update({f"DUP{i}": i for i in range(1, 17)}) | ||
|
|
||
| class uint256(int): | ||
| pass | ||
|
|
||
| class VMTrace(Struct): | ||
| code: HexBytes | ||
| """The code to be executed.""" | ||
| ops: list[VMOperation] | ||
| """The operations executed.""" | ||
|
|
||
| class VMOperation(Struct): | ||
| pc: int | ||
| """The program counter.""" | ||
| cost: int | ||
| """The gas cost for this instruction.""" | ||
| ex: VMExecutedOperation | None | ||
| """Information concerning the execution of the operation.""" | ||
| sub: VMTrace | None | ||
| """Subordinate trace of the CALL/CREATE if applicable.""" | ||
| op: str | ||
| """Opcode that is being called.""" | ||
| idx: str | ||
| """Index in the tree.""" | ||
|
|
||
| class VMExecutedOperation(Struct): | ||
| used: int | ||
| """The amount of remaining gas.""" | ||
| push: list[HexBytes] | ||
| """The stack item placed, if any.""" | ||
| mem: MemoryDiff | None | ||
| """If altered, the memory delta.""" | ||
| store: StorageDiff | None | ||
| """The altered storage value, if any.""" | ||
|
|
||
| class MemoryDiff(Struct): | ||
| off: int | ||
| """Offset into memory the change begins.""" | ||
| data: HexBytes | ||
| """The changed data.""" | ||
|
|
||
| class StorageDiff(Struct): | ||
| key: uint256 | ||
| """Which key in storage is changed.""" | ||
| val: uint256 | ||
| """What the value has been changed to.""" | ||
|
|
||
| class VMTraceFrame(Struct): | ||
| """ | ||
| A synthetic trace frame representing the state at a step of execution. | ||
| """ | ||
|
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||
| address: str | ||
| pc: int | ||
| op: str | ||
| depth: int | ||
| stack: list[int] | ||
| memory: bytes | memoryview | ||
| storage: dict[int, int] | ||
|
|
||
| def to_trace_frames( | ||
| trace: VMTrace, | ||
| depth: int = 1, | ||
| address: str = "", | ||
| copy_memory: bool = True, | ||
| ) -> Iterator[VMTraceFrame]: | ||
| """ | ||
| Replays a VMTrace and yields trace frames at each step of the execution. | ||
| Can be used as a much faster drop-in replacement for Geth-style traces. | ||
| Args: | ||
| trace (VMTrace): A decoded trace from a `trace_` rpc. | ||
| depth (int): A depth of the call being processed. automatically populated. | ||
| address (str): The address of the contract being executed. auto populated | ||
| except the root call. | ||
| copy_memory (bool): Whether to copy memory when returning trace frames. | ||
| Disable for a speedup when dealing with traces using a large amount of memory. | ||
| when disabled, `VMTraceFrame.memory` becomes `memoryview` instead of `bytes`, which | ||
| works like a pointer at the memory `bytearray`. this means you must process the | ||
| frames immediately, otherwise you risk memory value mutating further into execution. | ||
| Returns: | ||
| Iterator[VMTraceFrame]: An iterator of synthetic traces which can be used as a drop-in | ||
| replacement for Geth-style traces. also contains the address of the current contract | ||
| context. | ||
| """ | ||
| memory = Memory() | ||
| stack = Stack() | ||
| storage: dict[int, int] = {} | ||
| call_address = "" | ||
| read_memory = memory.read_bytes if copy_memory else memory.read | ||
|
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||
| for op in trace.ops: | ||
| if op.ex and op.ex.mem: | ||
| memory.extend(op.ex.mem.off, len(op.ex.mem.data)) | ||
|
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||
| # geth convention is to return after memory expansion, but before operation is applied | ||
| yield VMTraceFrame( | ||
| address=address, | ||
| pc=op.pc, | ||
| op=op.op, | ||
| depth=depth, | ||
| stack=[to_int(val) for val in stack.values], | ||
| memory=read_memory(0, len(memory)), | ||
| storage=storage.copy(), | ||
| ) | ||
|
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|
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| class RPCResponse(Struct): | ||
| result: RPCTraceResult | list[RPCTraceResult] | ||
|
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|
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| class RPCTraceResult(Struct): | ||
| trace: list | None | ||
| vmTrace: VMTrace | ||
| stateDiff: dict | None | ||
|
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|
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| def dec_hook(type: type, obj: Any) -> Any: | ||
| if type is uint256: | ||
| return uint256(obj, 16) | ||
| elif type is HexBytes: | ||
| return HexBytes(obj) | ||
|
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|
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| def from_rpc_response(buffer: bytes) -> VMTrace | list[VMTrace]: | ||
| """ | ||
| Decode structured data from a raw `trace_replayTransaction` or `trace_replayBlockTransactions`. | ||
| """ | ||
| response = Decoder(RPCResponse, dec_hook=dec_hook).decode(buffer) | ||
| result: list[RPCTraceResult] | RPCTraceResult = response.result | ||
| return [i.vmTrace for i in result] if isinstance(result, list) else result.vmTrace | ||
| if op.op in ["CALL", "DELEGATECALL", "STATICCALL"]: | ||
| call_address = Address.__eth_pydantic_validate__(stack.values[-2]) | ||
|
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||
| if op.ex: | ||
| if op.ex.mem: | ||
| memory.write(op.ex.mem.off, len(op.ex.mem.data), op.ex.mem.data) | ||
|
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| num_pop = POPCODES.get(op.op) | ||
| if num_pop: | ||
| stack.pop_any(num_pop) | ||
|
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| for item in op.ex.push: | ||
| stack.push_bytes(item) | ||
|
|
||
| # erigon bug: https://github.com/ledgerwatch/erigon/pull/7970 | ||
| if op.op == "PUSH0" and not op.ex.push: | ||
| stack.push_int(0) | ||
|
|
||
| if op.ex.store: | ||
| storage[op.ex.store.key] = op.ex.store.val | ||
|
|
||
| if op.sub: | ||
| yield from to_trace_frames( | ||
| op.sub, depth=depth + 1, address=call_address, copy_memory=copy_memory | ||
| ) | ||
|
|
||
| class RPCResponse(Struct): | ||
| result: RPCTraceResult | list[RPCTraceResult] | ||
|
|
||
| class RPCTraceResult(Struct): | ||
| trace: list | None | ||
| vmTrace: VMTrace | ||
| stateDiff: dict | None | ||
|
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||
| def dec_hook(type: type, obj: Any) -> Any: | ||
| if type is uint256: | ||
| return uint256(obj, 16) | ||
| elif type is HexBytes: | ||
| return HexBytes(obj) | ||
|
|
||
| def from_rpc_response(buffer: bytes) -> VMTrace | list[VMTrace]: | ||
| """ | ||
| Decode structured data from a raw `trace_replayTransaction` or | ||
| `trace_replayBlockTransactions`. | ||
| """ | ||
| response = Decoder(RPCResponse, dec_hook=dec_hook).decode(buffer) | ||
| result: list[RPCTraceResult] | RPCTraceResult = response.result | ||
| return [i.vmTrace for i in result] if isinstance(result, list) else result.vmTrace |
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