nac3artiq: symbol resolver resolve typevar type
This commit is contained in:
parent
41e05cb2ec
commit
6e93e41a3b
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@ -100,10 +100,13 @@ impl Nac3 {
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let val = id_fn.call1((member.get_item(1)?,))?.extract()?;
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name_to_pyid.insert(key.into(), val);
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}
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let typings = PyModule::import(py, "typing")?;
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let helper = PythonHelper {
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id_fn: builtins.getattr("id").unwrap().to_object(py),
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len_fn: builtins.getattr("len").unwrap().to_object(py),
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type_fn: builtins.getattr("type").unwrap().to_object(py),
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origin_ty_fn: typings.getattr("get_origin").unwrap().to_object(py),
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args_ty_fn: typings.getattr("get_args").unwrap().to_object(py),
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};
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Ok((
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module.getattr("__name__")?.extract()?,
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@ -442,10 +445,13 @@ impl Nac3 {
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};
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let mut synthesized = parse_program(&synthesized).unwrap();
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let builtins = PyModule::import(py, "builtins")?;
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let typings = PyModule::import(py, "typing")?;
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let helper = PythonHelper {
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id_fn: builtins.getattr("id").unwrap().to_object(py),
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len_fn: builtins.getattr("len").unwrap().to_object(py),
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type_fn: builtins.getattr("type").unwrap().to_object(py),
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origin_ty_fn: typings.getattr("get_origin").unwrap().to_object(py),
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args_ty_fn: typings.getattr("get_args").unwrap().to_object(py),
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};
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let resolver = Arc::new(Resolver(Arc::new(InnerResolver {
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id_to_type: self.builtins_ty.clone().into(),
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@ -43,6 +43,8 @@ pub struct PythonHelper {
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pub type_fn: PyObject,
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pub len_fn: PyObject,
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pub id_fn: PyObject,
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pub origin_ty_fn: PyObject,
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pub args_ty_fn: PyObject,
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}
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struct PythonValue {
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@ -133,47 +135,46 @@ impl InnerResolver {
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}))
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}
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fn get_obj_type(
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// handle python objects that represent types themselves
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// primitives and class types should be themselves, use `ty_id` to check,
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// TypeVars and GenericAlias(`A[int, bool]`) should use `ty_ty_id` to check
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// the `bool` value returned indicates whether they are instantiated or not
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fn get_pyty_obj_type(
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&self,
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py: Python,
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obj: &PyAny,
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pyty: &PyAny,
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unifier: &mut Unifier,
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defs: &[Arc<RwLock<TopLevelDef>>],
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primitives: &PrimitiveStore,
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) -> PyResult<Option<Type>> {
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) -> PyResult<Result<(Type, bool), String>> {
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let ty_id: u64 = self
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.helper
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.id_fn
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.call1(py, (self.helper.type_fn.call1(py, (obj,))?,))?
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.call1(py, (pyty,))?
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.extract(py)?;
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let ty_ty_id: u64 = self
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.helper
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.id_fn
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.call1(py, (self.helper.type_fn.call1(py, (pyty,))?,))?
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.extract(py)?;
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if ty_id == self.primitive_ids.int || ty_id == self.primitive_ids.int32 {
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Ok(Some(primitives.int32))
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Ok(Ok((primitives.int32, true)))
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} else if ty_id == self.primitive_ids.int64 {
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Ok(Some(primitives.int64))
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Ok(Ok((primitives.int64, true)))
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} else if ty_id == self.primitive_ids.bool {
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Ok(Some(primitives.bool))
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Ok(Ok((primitives.bool, true)))
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} else if ty_id == self.primitive_ids.float {
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Ok(Some(primitives.float))
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Ok(Ok((primitives.float, true)))
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} else if ty_id == self.primitive_ids.list {
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let len: usize = self.helper.len_fn.call1(py, (obj,))?.extract(py)?;
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if len == 0 {
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let var = unifier.get_fresh_var().0;
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let list = unifier.add_ty(TypeEnum::TList { ty: var });
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Ok(Some(list))
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} else {
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let ty = self.get_list_elem_type(py, obj, len, unifier, defs, primitives)?;
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Ok(ty.map(|ty| unifier.add_ty(TypeEnum::TList { ty })))
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}
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// do not handle type var param and concrete check here
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let var = unifier.get_fresh_var().0;
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let list = unifier.add_ty(TypeEnum::TList { ty: var });
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Ok(Ok((list, false)))
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} else if ty_id == self.primitive_ids.tuple {
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let elements: &PyTuple = obj.cast_as()?;
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let types: Result<Option<Vec<_>>, _> = elements
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.iter()
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.map(|elem| self.get_obj_type(py, elem, unifier, defs, primitives))
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.collect();
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let types = types?;
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Ok(types.map(|types| unifier.add_ty(TypeEnum::TTuple { ty: types })))
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} else if let Some(def_id) = self.pyid_to_def.read().get(&ty_id) {
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// do not handle type var param and concrete check here
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Ok(Ok((unifier.add_ty(TypeEnum::TTuple { ty: vec![] }), false)))
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} else if let Some(def_id) = self.pyid_to_def.read().get(&ty_id).cloned() {
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let def = defs[def_id.0].read();
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if let TopLevelDef::Class {
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object_id,
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@ -183,54 +184,275 @@ impl InnerResolver {
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..
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} = &*def
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{
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let var_map: HashMap<_, _> = type_vars
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.iter()
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.map(|var| {
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(
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if let TypeEnum::TVar { id, .. } = &*unifier.get_ty(*var) {
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*id
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} else {
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unreachable!()
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},
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unifier.get_fresh_var().0,
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)
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})
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.collect();
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let mut fields_ty = HashMap::new();
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for method in methods.iter() {
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fields_ty.insert(method.0, (method.1, false));
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}
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for field in fields.iter() {
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let name: String = field.0.into();
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let field_data = obj.getattr(&name)?;
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let ty = self
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.get_obj_type(py, field_data, unifier, defs, primitives)?
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.unwrap_or(primitives.none);
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let field_ty = unifier.subst(field.1, &var_map).unwrap_or(field.1);
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if unifier.unify(ty, field_ty).is_err() {
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// field type mismatch
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return Ok(None);
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// do not handle type var param and concrete check here, and no subst
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Ok(Ok({
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let ty = TypeEnum::TObj {
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obj_id: *object_id,
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params: RefCell::new({
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type_vars
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.iter()
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.map(|x| {
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if let TypeEnum::TVar { id, .. } = &*unifier.get_ty(*x) {
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(*id, *x)
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} else {
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println!("{}", unifier.default_stringify(*x));
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unreachable!()
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}
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}).collect()
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}),
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fields: RefCell::new({
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let mut res = methods
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.iter()
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.map(|(iden, ty, _)| (*iden, (*ty, false)))
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.collect::<HashMap<_, _>>();
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res.extend(fields.clone().into_iter().map(|x| (x.0, (x.1, x.2))));
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res
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})
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};
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// here also false, later instantiation use python object to check compatible
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(unifier.add_ty(ty), false)
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}))
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} else {
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// only object is supported, functions are not supported
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unreachable!("function type is not supported, should not be queried")
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}
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} else if ty_ty_id == self.primitive_ids.typevar {
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let constraint_types = {
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let constraints = pyty.getattr("__constraints__").unwrap();
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let mut result: Vec<Type> = vec![];
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for i in 0.. {
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if let Ok(constr) = constraints.get_item(i) {
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result.push({
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match self.get_pyty_obj_type(py, constr, unifier, defs, primitives)? {
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Ok((ty, _)) => {
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if unifier.is_concrete(ty, &[]) {
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ty
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} else {
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return Ok(Err(format!(
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"the {}th constraint of TypeVar `{}` is not concrete",
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i + 1,
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pyty.getattr("__name__")?.extract::<String>()?
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)))
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}
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},
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Err(err) => return Ok(Err(err))
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}
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})
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} else {
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break;
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}
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}
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result
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};
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let res = unifier.get_fresh_var_with_range(&constraint_types).0;
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Ok(Ok((res, true)))
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} else if ty_ty_id == self.primitive_ids.generic_alias.0 || ty_ty_id == self.primitive_ids.generic_alias.1 {
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let origin = self.helper.origin_ty_fn.call1(py, (pyty,))?;
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let args = self.helper.args_ty_fn.call1(py, (pyty,))?;
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let args: &PyTuple = args.cast_as(py)?;
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let origin_ty = match self.get_pyty_obj_type(py, origin.as_ref(py), unifier, defs, primitives)? {
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Ok((ty, false)) => ty,
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Ok((_, true)) => return Ok(Err("instantiated type does not take type parameters".into())),
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Err(err) => return Ok(Err(err))
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};
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match &*unifier.get_ty(origin_ty) {
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TypeEnum::TList { .. } => {
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if args.len() == 1 {
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let ty = match self.get_pyty_obj_type(py, args.get_item(0), unifier, defs, primitives)? {
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Ok(ty) => ty,
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Err(err) => return Ok(Err(err))
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};
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if !unifier.is_concrete(ty.0, &[]) && !ty.1 {
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panic!("type list should take concrete parameters in type var ranges")
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}
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Ok(Ok((unifier.add_ty(TypeEnum::TList { ty: ty.0 }), true)))
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} else {
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return Ok(Err(format!("type list needs exactly 1 type parameters, found {}", args.len())))
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}
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},
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TypeEnum::TTuple { .. } => {
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let args = match args
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.iter()
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.map(|x| self.get_pyty_obj_type(py, x, unifier, defs, primitives))
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.collect::<Result<Vec<_>, _>>()?
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.into_iter()
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.collect::<Result<Vec<_>, _>>() {
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Ok(args) if !args.is_empty() => args
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.into_iter()
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.map(|(x, check)| if !unifier.is_concrete(x, &[]) && !check {
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panic!("type tuple should take concrete parameters in type var ranges")
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} else {
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x
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}
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)
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.collect::<Vec<_>>(),
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Err(err) => return Ok(Err(err)),
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_ => return Ok(Err("tuple type needs at least 1 type parameters".to_string()))
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};
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Ok(Ok((unifier.add_ty(TypeEnum::TTuple { ty: args }), true)))
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},
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TypeEnum::TObj { params, obj_id, .. } => {
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let subst = {
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let params = &*params.borrow();
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if params.len() != args.len() {
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return Ok(Err(format!(
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"for class #{}, expect {} type parameters, got {}.",
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obj_id.0,
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params.len(),
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args.len(),
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)))
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}
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let args = match args
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.iter()
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.map(|x| self.get_pyty_obj_type(py, x, unifier, defs, primitives))
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.collect::<Result<Vec<_>, _>>()?
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.into_iter()
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.collect::<Result<Vec<_>, _>>() {
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Ok(args) => args
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.into_iter()
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.map(|(x, check)| if !unifier.is_concrete(x, &[]) && !check {
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panic!("type class should take concrete parameters in type var ranges")
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} else {
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x
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}
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)
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.collect::<Vec<_>>(),
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Err(err) => return Ok(Err(err)),
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};
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params
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.iter()
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.zip(args.iter())
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.map(|((id, _), ty)| (*id, *ty))
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.collect::<HashMap<_, _>>()
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};
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Ok(Ok((unifier.subst(origin_ty, &subst).unwrap_or(origin_ty), true)))
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},
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TypeEnum::TVirtual { .. } => {
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if args.len() == 1 {
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let ty = match self.get_pyty_obj_type(py, args.get_item(0), unifier, defs, primitives)? {
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Ok(ty) => ty,
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Err(err) => return Ok(Err(err))
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};
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if !unifier.is_concrete(ty.0, &[]) && !ty.1 {
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panic!("virtual class should take concrete parameters in type var ranges")
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}
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Ok(Ok((unifier.add_ty(TypeEnum::TVirtual { ty: ty.0 }), true)))
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} else {
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return Ok(Err(format!("virtual class needs exactly 1 type parameters, found {}", args.len())))
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}
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}
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_ => unimplemented!()
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}
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} else if ty_id == self.primitive_ids.virtual_id {
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Ok(Ok(({
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let ty = TypeEnum::TVirtual { ty: unifier.get_fresh_var().0 };
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unifier.add_ty(ty)
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}, false)))
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} else {
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Ok(Err("unknown type".into()))
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}
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}
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fn get_obj_type(
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&self,
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py: Python,
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obj: &PyAny,
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unifier: &mut Unifier,
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defs: &[Arc<RwLock<TopLevelDef>>],
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primitives: &PrimitiveStore,
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) -> PyResult<Option<Type>> {
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let ty = self.helper.type_fn.call1(py, (obj,)).unwrap();
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let (extracted_ty, inst_check) = match self.get_pyty_obj_type(
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py,
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{
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if [self.primitive_ids.typevar,
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self.primitive_ids.generic_alias.0,
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self.primitive_ids.generic_alias.1
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].contains(&self.helper.id_fn.call1(py, (ty.clone(),))?.extract::<u64>(py)?) {
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obj
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} else {
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ty.as_ref(py)
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}
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},
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unifier,
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defs,
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primitives
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)? {
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Ok(s) => s,
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Err(_) => return Ok(None)
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};
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return match (&*unifier.get_ty(extracted_ty), inst_check) {
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// do the instantiation for these three types
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(TypeEnum::TList { ty }, false) => {
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let len: usize = self.helper.len_fn.call1(py, (obj,))?.extract(py)?;
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if len == 0 {
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assert!(matches!(
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&*unifier.get_ty(extracted_ty),
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TypeEnum::TVar { meta: nac3core::typecheck::typedef::TypeVarMeta::Generic, range, .. }
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if range.borrow().is_empty()
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));
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Ok(Some(extracted_ty))
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} else {
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let actual_ty = self
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.get_list_elem_type(py, obj, len, unifier, defs, primitives)?;
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if let Some(actual_ty) = actual_ty {
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unifier.unify(*ty, actual_ty).unwrap();
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Ok(Some(extracted_ty))
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} else {
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Ok(None)
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}
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}
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}
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(TypeEnum::TTuple { .. }, false) => {
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let elements: &PyTuple = obj.cast_as()?;
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let types: Result<Option<Vec<_>>, _> = elements
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.iter()
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.map(|elem| self.get_obj_type(py, elem, unifier, defs, primitives))
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.collect();
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let types = types?;
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Ok(types.map(|types| unifier.add_ty(TypeEnum::TTuple { ty: types })))
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}
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(TypeEnum::TObj { params, fields, .. }, false) => {
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let var_map = params
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.borrow()
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.iter()
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.map(|(id_var, ty)| {
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if let TypeEnum::TVar { id, range, .. } = &*unifier.get_ty(*ty) {
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assert_eq!(*id, *id_var);
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(*id, unifier.get_fresh_var_with_range(&range.borrow()).0)
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} else {
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unreachable!()
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}
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})
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.collect::<HashMap<_, _>>();
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// loop through non-function fields of the class to get the instantiated value
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for field in fields.borrow().iter() {
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let name: String = (*field.0).into();
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if let TypeEnum::TFunc( .. ) = &*unifier.get_ty(field.1.0) {
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continue;
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} else {
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let field_data = obj.getattr(&name)?;
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let ty = self
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.get_obj_type(py, field_data, unifier, defs, primitives)?
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.unwrap_or(primitives.none);
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let field_ty = unifier.subst(field.1.0, &var_map).unwrap_or(field.1.0);
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if unifier.unify(ty, field_ty).is_err() {
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// field type mismatch
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return Ok(None);
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}
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}
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fields_ty.insert(field.0, (ty, field.2));
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}
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for (_, ty) in var_map.iter() {
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// must be concrete type
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if !unifier.is_concrete(*ty, &[]) {
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return Ok(None);
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return Ok(None)
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}
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}
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Ok(Some(unifier.add_ty(TypeEnum::TObj {
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obj_id: *object_id,
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fields: RefCell::new(fields_ty),
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params: RefCell::new(var_map),
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})))
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} else {
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// only object is supported, functions are not supported
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Ok(None)
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return Ok(Some(unifier.subst(extracted_ty, &var_map).unwrap_or(extracted_ty)));
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}
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} else {
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Ok(None)
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}
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_ => Ok(Some(extracted_ty))
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};
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}
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fn get_obj_value<'ctx, 'a>(
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Reference in New Issue