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52 lines
1.8 KiB
52 lines
1.8 KiB
# Copyright 2021 The Meson development team |
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# SPDX-license-identifier: Apache-2.0 |
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from __future__ import annotations |
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from ...interpreterbase import ( |
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ObjectHolder, |
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MesonOperator, |
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typed_pos_args, |
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noKwargs, |
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noPosargs, |
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InvalidArguments |
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) |
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import typing as T |
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if T.TYPE_CHECKING: |
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# Object holders need the actual interpreter |
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from ...interpreter import Interpreter |
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from ...interpreterbase import TYPE_var, TYPE_kwargs |
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class BooleanHolder(ObjectHolder[bool]): |
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def __init__(self, obj: bool, interpreter: 'Interpreter') -> None: |
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super().__init__(obj, interpreter) |
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self.methods.update({ |
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'to_int': self.to_int_method, |
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'to_string': self.to_string_method, |
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}) |
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self.trivial_operators.update({ |
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MesonOperator.BOOL: (None, lambda x: self.held_object), |
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MesonOperator.NOT: (None, lambda x: not self.held_object), |
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MesonOperator.EQUALS: (bool, lambda x: self.held_object == x), |
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MesonOperator.NOT_EQUALS: (bool, lambda x: self.held_object != x), |
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}) |
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def display_name(self) -> str: |
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return 'bool' |
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@noKwargs |
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@noPosargs |
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def to_int_method(self, args: T.List[TYPE_var], kwargs: TYPE_kwargs) -> int: |
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return 1 if self.held_object else 0 |
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@noKwargs |
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@typed_pos_args('bool.to_string', optargs=[str, str]) |
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def to_string_method(self, args: T.Tuple[T.Optional[str], T.Optional[str]], kwargs: TYPE_kwargs) -> str: |
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true_str = args[0] or 'true' |
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false_str = args[1] or 'false' |
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if any(x is not None for x in args) and not all(x is not None for x in args): |
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raise InvalidArguments('bool.to_string() must have either no arguments or exactly two string arguments that signify what values to return for true and false.') |
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return true_str if self.held_object else false_str
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