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# Copyright 2013-2021 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from .. import mesonlib, mparser, mlog
from .exceptions import InvalidArguments, InterpreterException
import collections.abc
import typing as T
if T.TYPE_CHECKING:
from .baseobjects import TYPE_var, TYPE_kwargs
def flatten(args: T.Union['TYPE_var', T.List['TYPE_var']]) -> T.List['TYPE_var']:
if isinstance(args, mparser.StringNode):
assert isinstance(args.value, str)
return [args.value]
if not isinstance(args, collections.abc.Sequence):
return [args]
result: T.List['TYPE_var'] = []
for a in args:
if isinstance(a, list):
rest = flatten(a)
result = result + rest
elif isinstance(a, mparser.StringNode):
result.append(a.value)
else:
result.append(a)
return result
def resolve_second_level_holders(args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> T.Tuple[T.List['TYPE_var'], 'TYPE_kwargs']:
def resolver(arg: 'TYPE_var') -> 'TYPE_var':
if isinstance(arg, list):
return [resolver(x) for x in arg]
if isinstance(arg, dict):
return {k: resolver(v) for k, v in arg.items()}
if isinstance(arg, mesonlib.SecondLevelHolder):
return arg.get_default_object()
return arg
return [resolver(x) for x in args], {k: resolver(v) for k, v in kwargs.items()}
def check_stringlist(a: T.Any, msg: str = 'Arguments must be strings.') -> None:
if not isinstance(a, list):
mlog.debug('Not a list:', str(a))
raise InvalidArguments('Argument not a list.')
if not all(isinstance(s, str) for s in a):
mlog.debug('Element not a string:', str(a))
raise InvalidArguments(msg)
def default_resolve_key(key: mparser.BaseNode) -> str:
if not isinstance(key, mparser.IdNode):
raise InterpreterException('Invalid kwargs format.')
return key.value
def get_callee_args(wrapped_args: T.Sequence[T.Any], want_subproject: bool = False) -> T.Tuple[T.Any, mparser.BaseNode, T.List['TYPE_var'], 'TYPE_kwargs', T.Optional[str]]:
s = wrapped_args[0]
n = len(wrapped_args)
# Raise an error if the codepaths are not there
subproject = None # type: T.Optional[str]
if want_subproject and n == 2:
if hasattr(s, 'subproject'):
# Interpreter base types have 2 args: self, node
node = wrapped_args[1]
# args and kwargs are inside the node
args = None
kwargs = None
subproject = s.subproject
elif hasattr(wrapped_args[1], 'subproject'):
# Module objects have 2 args: self, interpreter
node = wrapped_args[1].current_node
# args and kwargs are inside the node
args = None
kwargs = None
subproject = wrapped_args[1].subproject
else:
raise AssertionError(f'Unknown args: {wrapped_args!r}')
elif n == 3:
# Methods on objects (*Holder, MesonMain, etc) have 3 args: self, args, kwargs
node = s.current_node
args = wrapped_args[1]
kwargs = wrapped_args[2]
if want_subproject:
if hasattr(s, 'subproject'):
subproject = s.subproject
elif hasattr(s, 'interpreter'):
subproject = s.interpreter.subproject
elif n == 4:
# Meson functions have 4 args: self, node, args, kwargs
# Module functions have 4 args: self, state, args, kwargs
from .interpreterbase import InterpreterBase # TODO: refactor to avoid this import
if isinstance(s, InterpreterBase):
node = wrapped_args[1]
else:
node = wrapped_args[1].current_node
args = wrapped_args[2]
kwargs = wrapped_args[3]
if want_subproject:
if isinstance(s, InterpreterBase):
subproject = s.subproject
else:
subproject = wrapped_args[1].subproject
else:
raise AssertionError(f'Unknown args: {wrapped_args!r}')
# Sometimes interpreter methods are called internally with None instead of
# empty list/dict
args = args if args is not None else []
kwargs = kwargs if kwargs is not None else {}
return s, node, args, kwargs, subproject
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