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added check: named arguments must follow bare star

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Nick Liu 2022-12-29 02:16:44 +08:00
parent 15ab44384c
commit 63e4a36e27
1 changed files with 9 additions and 2 deletions
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11
parser/python.lalrpop
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@ -667,7 +667,7 @@ TypedParameter: ast::Arg = {
// TODO: figure out another grammar that makes this inline no longer required.
#[inline]
ParameterListStarArgs<ArgType>: (Option<Box<ast::Arg>>, Vec<ast::Arg>, Vec<ast::Expr>, Option<Box<ast::Arg>>) = {
"*" <va:ArgType?> <kw:("," ParameterDef<ArgType>)*> <kwarg:("," KwargParameter<ArgType>)?> => {
<location:@L> "*" <va:ArgType?> <kw:("," ParameterDef<ArgType>)*> <kwarg:("," KwargParameter<ArgType>)?> =>? {
// Extract keyword arguments:
let mut kwonlyargs = Vec::new();
let mut kw_defaults = Vec::new();
@ -685,7 +685,14 @@ ParameterListStarArgs<ArgType>: (Option<Box<ast::Arg>>, Vec<ast::Arg>, Vec<ast::
let kwarg = kwarg.map(|n| n.1).flatten();
let va = va.map(Box::new);
(va, kwargs, kw_defaults, kwarg)
if va==None && kwargs.is_empty() && kwarg==None {
Err(LexicalError {
error: LexicalErrorType::OtherError("named arguments must follow bare *".to_string()),
location: location,
})?
}
Ok((va, kwargs, kw_defaults, kwarg))
}
};