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Add __annotations__ attribute to functions. #640

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Merged
OddCoincidence merged 1 commit into from
Mar 9, 2019
Merged

Add __annotations__ attribute to functions. #640

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7 changes: 6 additions & 1 deletion tests/snippets/type_hints.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,12 @@

# See also: https://github.com/RustPython/RustPython/issues/587

def curry(foo: int, bla=2) -> float:
def curry(foo: int, bla: int =2) -> float:
return foo * 3.1415926 * bla

assert curry(2) > 10

print(curry.__annotations__)
assert curry.__annotations__['foo'] is int
assert curry.__annotations__['return'] is float
assert curry.__annotations__['bla'] is int
9 changes: 2 additions & 7 deletions vm/src/frame.rs
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Expand Up @@ -453,7 +453,7 @@ impl Frame {
let _qualified_name = self.pop_value();
let code_obj = self.pop_value();

let _annotations = if flags.contains(bytecode::FunctionOpArg::HAS_ANNOTATIONS) {
let annotations = if flags.contains(bytecode::FunctionOpArg::HAS_ANNOTATIONS) {
self.pop_value()
} else {
vm.new_dict()
Expand All @@ -470,13 +470,8 @@ impl Frame {
let scope = self.scope.clone();
let obj = vm.ctx.new_function(code_obj, scope, defaults);

let annotation_repr = vm.to_pystr(&_annotations)?;
vm.ctx.set_attr(&obj, "__annotations__", annotations);

warn!(
"Type annotation must be stored in attribute! {:?}",
annotation_repr
);
// TODO: use annotations with set_attr here!
self.push_value(obj);
Ok(None)
}
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2 changes: 1 addition & 1 deletion vm/src/pyobject.rs
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Expand Up @@ -1566,7 +1566,7 @@ impl PyObject {
PyObject {
payload,
typ: Some(typ),
dict: None,
dict: Some(RefCell::new(PyAttributes::new())),
}
.into_ref()
}
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