Those classes are used by wrapper scripts and we should not have to import the rest of mesonlib, build.py, and all their dependencies for that. This renames mesonlib/ directory to utils/ and add a mesonlib.py module that imports everything from utils/ to not have to change `import mesonlib` everywhere. It allows to import utils.core without importing the rest of mesonlib.pull/10869/head
Xavier Claessens
2 years ago
committed by
Eli Schwartz
parent
a58ec322b3
commit
2dfd952eb9
20 changed files with 247 additions and 150 deletions
@ -0,0 +1,11 @@ |
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import sys |
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import json |
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import typing as T |
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from . import meson_exe |
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# This script is used by run_unittests.py to verify we don't load too many |
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# modules when executing a wrapped command. |
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def run(args: T.List[str]) -> int: |
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meson_exe.run(args) |
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print(json.dumps(list(sys.modules.keys()))) |
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return 0 |
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@ -0,0 +1,160 @@ |
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# Copyright 2012-2022 The Meson development team |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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""" |
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Contains the strict minimum to run scripts. |
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When the backend needs to call back into Meson during compilation for running |
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scripts or wrapping commands, it is important to load as little python modules |
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as possible for performance reasons. |
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""" |
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from __future__ import annotations |
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from dataclasses import dataclass |
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import os |
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import abc |
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import typing as T |
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if T.TYPE_CHECKING: |
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from typing_extensions import Literal |
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from ..mparser import BaseNode |
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from . import programs |
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__all__ = [ |
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'MesonException', |
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'MesonBugException', |
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'HoldableObject', |
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'EnvInitValueType', |
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'EnvironmentVariables', |
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'ExecutableSerialisation', |
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] |
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class MesonException(Exception): |
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'''Exceptions thrown by Meson''' |
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def __init__(self, *args: object, file: T.Optional[str] = None, |
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lineno: T.Optional[int] = None, colno: T.Optional[int] = None): |
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super().__init__(*args) |
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self.file = file |
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self.lineno = lineno |
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self.colno = colno |
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@classmethod |
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def from_node(cls, *args: object, node: BaseNode) -> MesonException: |
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"""Create a MesonException with location data from a BaseNode |
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:param node: A BaseNode to set location data from |
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:return: A Meson Exception instance |
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""" |
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return cls(*args, file=node.filename, lineno=node.lineno, colno=node.colno) |
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class MesonBugException(MesonException): |
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'''Exceptions thrown when there is a clear Meson bug that should be reported''' |
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def __init__(self, msg: str, file: T.Optional[str] = None, |
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lineno: T.Optional[int] = None, colno: T.Optional[int] = None): |
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super().__init__(msg + '\n\n This is a Meson bug and should be reported!', |
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file=file, lineno=lineno, colno=colno) |
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class HoldableObject(metaclass=abc.ABCMeta): |
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''' Dummy base class for all objects that can be |
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held by an interpreter.baseobjects.ObjectHolder ''' |
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EnvInitValueType = T.Dict[str, T.Union[str, T.List[str]]] |
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class EnvironmentVariables(HoldableObject): |
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def __init__(self, values: T.Optional[EnvInitValueType] = None, |
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init_method: Literal['set', 'prepend', 'append'] = 'set', separator: str = os.pathsep) -> None: |
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self.envvars: T.List[T.Tuple[T.Callable[[T.Dict[str, str], str, T.List[str], str], str], str, T.List[str], str]] = [] |
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# The set of all env vars we have operations for. Only used for self.has_name() |
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self.varnames: T.Set[str] = set() |
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if values: |
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init_func = getattr(self, init_method) |
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for name, value in values.items(): |
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v = value if isinstance(value, list) else [value] |
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init_func(name, v, separator) |
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def __repr__(self) -> str: |
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repr_str = "<{0}: {1}>" |
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return repr_str.format(self.__class__.__name__, self.envvars) |
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def hash(self, hasher: T.Any): |
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myenv = self.get_env({}) |
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for key in sorted(myenv.keys()): |
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hasher.update(bytes(key, encoding='utf-8')) |
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hasher.update(b',') |
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hasher.update(bytes(myenv[key], encoding='utf-8')) |
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hasher.update(b';') |
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def has_name(self, name: str) -> bool: |
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return name in self.varnames |
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def get_names(self) -> T.Set[str]: |
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return self.varnames |
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def set(self, name: str, values: T.List[str], separator: str = os.pathsep) -> None: |
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self.varnames.add(name) |
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self.envvars.append((self._set, name, values, separator)) |
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def append(self, name: str, values: T.List[str], separator: str = os.pathsep) -> None: |
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self.varnames.add(name) |
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self.envvars.append((self._append, name, values, separator)) |
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def prepend(self, name: str, values: T.List[str], separator: str = os.pathsep) -> None: |
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self.varnames.add(name) |
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self.envvars.append((self._prepend, name, values, separator)) |
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@staticmethod |
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def _set(env: T.Dict[str, str], name: str, values: T.List[str], separator: str) -> str: |
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return separator.join(values) |
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@staticmethod |
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def _append(env: T.Dict[str, str], name: str, values: T.List[str], separator: str) -> str: |
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curr = env.get(name) |
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return separator.join(values if curr is None else [curr] + values) |
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@staticmethod |
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def _prepend(env: T.Dict[str, str], name: str, values: T.List[str], separator: str) -> str: |
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curr = env.get(name) |
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return separator.join(values if curr is None else values + [curr]) |
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def get_env(self, full_env: T.MutableMapping[str, str]) -> T.Dict[str, str]: |
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env = full_env.copy() |
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for method, name, values, separator in self.envvars: |
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env[name] = method(env, name, values, separator) |
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return env |
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@dataclass(eq=False) |
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class ExecutableSerialisation: |
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# XXX: should capture and feed default to False, instead of None? |
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cmd_args: T.List[str] |
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env: T.Optional[EnvironmentVariables] = None |
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exe_wrapper: T.Optional['programs.ExternalProgram'] = None |
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workdir: T.Optional[str] = None |
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extra_paths: T.Optional[T.List] = None |
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capture: T.Optional[bool] = None |
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feed: T.Optional[bool] = None |
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tag: T.Optional[str] = None |
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verbose: bool = False |
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def __post_init__(self) -> None: |
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self.pickled = False |
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self.skip_if_destdir = False |
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self.subproject = '' |
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