From 210fd63104525b6e3154de529565258f19146f1a Mon Sep 17 00:00:00 2001 From: John Snow Date: Wed, 21 Apr 2021 14:20:26 -0400 Subject: qapi/expr.py: Consolidate check_if_str calls in check_if This is a small rewrite to address some minor style nits. Don't compare against the empty list to check for the empty condition, and move the normalization forward to unify the check on the now-normalized structure. With the check unified, the local nested function isn't needed anymore and can be brought down into the normal flow of the function. With the nesting level changed, shuffle the error strings around a bit to get them to fit in 79 columns. Note: although ifcond is typed as Sequence[str] elsewhere, we *know* that the parser will produce real, bona-fide lists. It's okay to check isinstance(ifcond, list) here. Signed-off-by: John Snow Message-Id: <20210421182032.3521476-12-jsnow@redhat.com> Reviewed-by: Markus Armbruster Signed-off-by: Markus Armbruster --- scripts/qapi/expr.py | 33 ++++++++++++++++----------------- 1 file changed, 16 insertions(+), 17 deletions(-) (limited to 'scripts/qapi/expr.py') diff --git a/scripts/qapi/expr.py b/scripts/qapi/expr.py index 4ebed4c..de7fc16 100644 --- a/scripts/qapi/expr.py +++ b/scripts/qapi/expr.py @@ -146,30 +146,29 @@ def check_flags(expr: _JSONObject, info: QAPISourceInfo) -> None: def check_if(expr: _JSONObject, info: QAPISourceInfo, source: str) -> None: - def check_if_str(ifcond: object) -> None: - if not isinstance(ifcond, str): - raise QAPISemError( - info, - "'if' condition of %s must be a string or a list of strings" - % source) - if ifcond.strip() == '': - raise QAPISemError( - info, - "'if' condition '%s' of %s makes no sense" - % (ifcond, source)) - ifcond = expr.get('if') if ifcond is None: return + if isinstance(ifcond, list): - if ifcond == []: + if not ifcond: raise QAPISemError( info, "'if' condition [] of %s is useless" % source) - for elt in ifcond: - check_if_str(elt) else: - check_if_str(ifcond) - expr['if'] = [ifcond] + # Normalize to a list + ifcond = expr['if'] = [ifcond] + + for elt in ifcond: + if not isinstance(elt, str): + raise QAPISemError( + info, + "'if' condition of %s must be a string or a list of strings" + % source) + if not elt.strip(): + raise QAPISemError( + info, + "'if' condition '%s' of %s makes no sense" + % (elt, source)) def normalize_members(members: object) -> None: -- cgit v1.1