RustPython/tools/opcode_metadata/utils.py at main · RustPython/RustPython · GitHub

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import dataclasses

import pathlib

import re

import sys

import tomllib

ROOT = pathlib.Path(__file__).parents[2].resolve()

DEFAULT_INPUT = ROOT / "crates/compiler-core/src/bytecode/instruction.rs"

DEFAULT_CONF = pathlib.Path(__file__).parent / "conf.toml"

@dataclasses.dataclass(frozen=True, kw_only=True, slots=True)

class StackEffect:

pushed: str | None = None

popped: str | None = None

@dataclasses.dataclass(frozen=True, kw_only=True, slots=True)

class Override:

is_instrumented: bool | None = None

stack_effect: StackEffect = dataclasses.field(default_factory=StackEffect)

type OverrideConfs = dict[str, Override]

SKIP_STACK_EFFECT = StackEffect()

SKIP_OVERRIDE = Override()

def get_conf(path: pathlib.Path = DEFAULT_CONF) -> OverrideConfs:

data = path.read_text(encoding="utf-8")

conf = tomllib.loads(data)

for k, v in conf.items():

v["stack_effect"] = StackEffect(**v.get("stack_effect", {}))

conf[k] = Override(**v)

return conf

def to_pascal_case(s: str) -> str:

return s.title().replace("_", "")

def to_upper_snake_case(s: str) -> str:

"""

Converts a PascalCaseString to be SNAKE_CASE

Parameters

----------

s : str

Pascal cased string to convert.

Returns

-------

str

Uppercased snake case string.

Examples

--------

>>> to_upper_snake_case("LoadAttr")

LOAD_ATTR

>>> to_upper_snake_case("CallIntrinsic1")

CALL_INTRINSIC_1

"""

res = re.sub(r"(?<=[a-z0-9])([A-Z])", r"_\1", s)

return re.sub(r"(\D)(\d+)$", r"\1_\2", res).upper()

def extract_enum_body(text: str, start: int) -> str:

"""

Extract the rust enum body from a raw rust source code.

Parameters

----------

text : str

Rust source code containing the enum body.

start : int

Offset to start searching from.

Returns

-------

str

Extracted enum body.

"""

assert text[start] == "{"

depth = 0

for i, ch in enumerate(text[start:], start):

if ch == "{":

depth += 1

elif ch == "}":

depth -= 1

if depth == 0:

return text[start + 1 : i].strip() # exclude the outer braces

raise ValueError("Could not find end to enum body")

RustPython/tools/opcode_metadata/utils.py at main · RustPython/RustPython · GitHub

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