On Tue, Sep 22, 2020 at 05:00:32PM -0400, John Snow wrote:
> Code style tools really dislike the use of global keywords, because it
> generally involves re-binding the name at runtime which can have strange
> effects depending on when and how that global name is referenced in
> other modules.
>
> Make a little indent level manager instead.
>
> Signed-off-by: John Snow <js...@redhat.com>
> ---
> scripts/qapi/common.py | 51 +++++++++++++++++++++++++++++-------------
> scripts/qapi/visit.py | 7 +++---
> 2 files changed, 38 insertions(+), 20 deletions(-)
>
> diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py
> index cee63eb95c..e0c5871b10 100644
> --- a/scripts/qapi/common.py
> +++ b/scripts/qapi/common.py
> @@ -93,33 +93,52 @@ def c_name(name, protect=True):
> pointer_suffix = ' *' + eatspace
>
>
> -def genindent(count):
> - ret = ''
> - for _ in range(count):
> - ret += ' '
> - return ret
> +class Indentation:
> + """
> + Indentation level management.
>
> + :param initial: Initial number of spaces, default 0.
> + """
> + def __init__(self, initial: int = 0) -> None:
> + self._level = initial
>
> -indent_level = 0
> + def __int__(self) -> int:
> + return self._level
>
> + def __repr__(self) -> str:
> + return "{}({:d})".format(type(self).__name__, self._level)
>
> -def push_indent(indent_amount=4):
> - global indent_level
> - indent_level += indent_amount
> + def __str__(self) -> str:
> + """Return the current indentation as a string of spaces."""
> + return ' ' * self._level
>
> + def __bool__(self) -> bool:
> + """True when there is a non-zero indentation."""
> + return bool(self._level)
>
> -def pop_indent(indent_amount=4):
> - global indent_level
> - indent_level -= indent_amount
> + def increase(self, amount: int = 4) -> int:
> + """Increase the indentation level by `amount`, default 4."""
> + self._level += amount
> + return self._level
> +Do you have a use case for returning the level? If not, I'd go without it, and add a "level" property instead, as it'd serve more cases. Other than that, Reviewed-by: Cleber Rosa <cr...@redhat.com>
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