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Merged
merged 4 commits into from
Jul 14, 2023
Merged

Parse type parameters in function definitions #96

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Parse type parameters in function definitions
zanieb Jul 12, 2023
9eb0752
Add test for combined items
zanieb Jul 12, 2023
027db8f
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zanieb Jul 13, 2023
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zanieb Jul 13, 2023
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27 changes: 27 additions & 0 deletions parser/src/parser.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -667,6 +667,33 @@ class Foo[X, Y: str, *U, **P]():
";
insta::assert_debug_snapshot!(ast::Suite::parse(source, "<test>").unwrap());
}
#[test]
#[cfg(feature = "all-nodes-with-ranges")]
fn test_parse_function_definition() {
let source = "\
def func(a):
...

def func[T](a: T) -> T:
...

def func[T: str](a: T) -> T:
...

def func[T: (str, bytes)](a: T) -> T:
...

def func[*Ts](*a: *Ts):
...

def func[**P](*args: P.args, **kwargs: P.kwargs):
...

def func[T, U: str, *Ts, **P]():
pass
";
insta::assert_debug_snapshot!(ast::Suite::parse(source, "<test>").unwrap());
}

#[test]
#[cfg(feature = "all-nodes-with-ranges")]
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7 changes: 3 additions & 4 deletions parser/src/python.lalrpop
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Expand Up @@ -965,16 +965,15 @@ WithItem<Goal>: ast::WithItem = {
};

FuncDef: ast::Stmt = {
<decorator_list:Decorator*> <location:@L> <is_async:"async"?> "def" <name:Identifier> <args:Parameters> <r:("->" <Test<"all">>)?> ":" <body:Suite> => {
<decorator_list:Decorator*> <location:@L> <is_async:"async"?> "def" <name:Identifier> <type_params:TypeParamList?> <args:Parameters> <r:("->" <Test<"all">>)?> ":" <body:Suite> => {
let args = Box::new(args);
let returns = r.map(|x| Box::new(x));
let end_location = body.last().unwrap().end();
let type_comment = None;
let type_params = Vec::new();
if is_async.is_some() {
ast::StmtAsyncFunctionDef { name, args, body, decorator_list, returns, type_comment, type_params, range: (location..end_location).into() }.into()
ast::StmtAsyncFunctionDef { name, args, body, decorator_list, returns, type_comment, type_params: type_params.unwrap_or_default(), range: (location..end_location).into() }.into()
} else {
ast::StmtFunctionDef { name, args, body, decorator_list, returns, type_comment, type_params, range: (location..end_location).into() }.into()
ast::StmtFunctionDef { name, args, body, decorator_list, returns, type_comment, type_params: type_params.unwrap_or_default(), range: (location..end_location).into() }.into()
}
},
};
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